US2003978A - Stop motion for braiding machines - Google Patents

Description

June 4, 1935.

J. F. SCHENCK, SR, ET AL STOP MOTION FOR BRAID ING MACHINES Filed Dec. 8, 1933 7 Sheets-Sheet 2 JOHN FSCHencgfi 4/70 Paul. 5 Mo TY J. F. SCHENCK, sR., ET AL 2,003,978

STOP MOTION FOR BRAIDING MACHINES June 4, 1935.

Filed Dec.

1955 7 Sheets-Sheet 3 W a M June 4," 1935. J. F. SCHENCK, SR., ETAL 2,003,978

STOP MOTION FOR BRAIDING MACHINES Filed Dec. 8, 1935 7 Sheets-Sheet 4 Joy/v ES -151M 52.

END I PMLS. MONTY J n 4, 1935- J. F. SCHENCK, SR, El AL 2,003,973

STOP MOTION FOR BRAIDING MACHINES Filed Dec. 8, 1953 7 Sheets-Sheet 5 June 4, 1935. J. F. SCHENCK, sR.. ET AL STOP MOTION FOR BRAIDING MACHINES Filed Dec. 8, 1953 7 Sheets-Sheet 6 Q L Q mg a; $55 57 we \E: S Jenn F -5CHENCK,5R. E r$nnt E I pg L 5 #ghn-Y 25 u 3M 45 alto Patented June 4, 1935 PATENT OFFICE STOP MOTION FOR BRAIDING MACHINES John F. Schenck, Sr., Lawndale, and Paul S."

Monty, Charlotte, N. 0.; said Monty assignor to said Schenck Application December s, 1933, Serial N0. 701,500

23 Claims.

This invention relates to a stop motion for a braiding machine of the type shown in Patent Number 1,765,117 of June '17, 1930, in which one of the inventors of the present mechanism is a joint inventor. I

It is an object of this invention 'to provide a stop motion for the type of braiding machine shown in said patent which will stop the operation of the machine when one of the strands being fed to the braiding mechanism becomes parted or too slack, said. stop motion having means which are operable to stop the machine regardless of its direction of rotation.

It is a further object of this invention to provide a stop motion for a braiding machine which is operable upon parting of a strand to automatically stop the machine and which embodies means held in elevated position by the strands being braided, said means being adapted to fall upon parting of a strand to in turn operate other means, which in turn are allowed. to fall by gravity to engage a normally stationary member to stop the machine, said stationary member being movable to stop the machine regardlessof the direction of rotation of the machine.

Some of the objects of the invention having been stated, the details of the apparatus will ap-' pear more fully when taken in connection Wit the accompanying drawings, in which' r Figure 1 is a side elevation partly in section, of a braiding machine with my stop motion at tached thereto;

Figure 2 is a top plan view of the strand guiding members with parts omitted, and showing diagrammatically the path of travel or" the several fliers; f

Figure 3 is a perspective detail View of the upper portion of the fliers and the blocks slidable thereon which operate the drop rods;

Figure 4 is an isometric view of one of the sliding blocks whichare adapted to operate on the flyers as shown in Figure 3; p, I

Figure 5 is a sectional plan view taken along line 55 in Figure 1; A

Figure 6 is a vertical sectional View taken along the line 6-45 in Figure 5;

Figure 7 is an exploded isometric view of one of the brackets and its associated parts which are adapted to operate the stop motion mechanism;

Figure 8 is an exploded isometric view of the lug and ring which are adapted toibe operated by the mechanism shown in Figure 7;

Figure 9 is an assembled detail plan view of themembers shown in the Figures 7 and 8 and modified form of the invention which is showing how the drop rod operates when a strand of thread is broken;

Figure 10 is a sectional plan View of a modified form of the. invention and taken along the line 5-.-5 in Figure 1;

Figure 11 is a vertical sectional view taken along; the line I l-'-l l in Figure 10;

Figure 12 is an exploded isometric view of the mechanism adapted to operate the stop motion mechanism which is shown in assembled form in Figures 10 and 13;

Figure .13 is an assembleddetail plan view of the parts in Figure 12 showing the drop rod operating the mechanism after a strand of thread is broken;

Figure 14 is taken along the line 55 inrFigure. 1;

Figure 15 is a front elevation of Figure 14;

Figure 16 is a plan view? of a modified form of the invention, with parts omitted, similar to Figure 2 and showing thestrand guiding members and also showing diagrammatically the path of travel of the several fliers;

Figure 17 is a vertical sectional view taken along'the line ll-l'l' in Figure 16;

Figure 18 is a perspective view, with parts omitted, showing the tripping mechanism as it is associated with one of the fliers. v

Figure 19 is a top plan view of another form of the stop motion and showing the drop rods in section, it being apparent that this type can be used beneath the rotating framework or surrounding the same; I

Figure 20 is a transverse sectional view taken along the line 2fl20 in Figure 19;

Figure 21 is a transverse sectional view taken along the line 2 l--2I in Figure 19;

Figure 22 is an elevation of a modified form of a member'on the fliers held in elevated position by strand tension; V

Figure 23 is a view similar to Figure 22 but showingthe position of parts upon failure of strand tension; 7

Figure 24 is an isometric View of still another form of a member on the fliers and which is held in elevated position by strand tension;

' Figure 2 5 is an elevation, looking at the-rear of Figure'24;

Referring more specifically to thedrawings, the numeral 10 denotes the base plate of a braiding machine which has rising therefrom a plurality of supports II for theannular internal gear [2, while disposed concentrically of this support, projecting upwardly from base I0, is a cylindria sectional plan view of another I CJI cal shaft I3 attached to the base I by means of the annulus l4. Rotatably mounted in bearings l5 and I6, which are in turn supported by base member I0, is a main drive shaft I! which has fixedly secured on the end thereof a pulley 8 and has rotatably mounted on the end thereof an idler pulley l9. Fixedly secured on shaft I1 is a beveled gear which in turn engages another beveled gear 2| which is also fixedly mounted on vertically disposed shaft 22. Shaft 22 operates the braid receiving and feeding mechanism which is not shown on these drawings because it is not a part of thisinvention; but is'fiilly shown in Patent Number 1,765,117 of June 17,.

The left-hand end of the main drive shaft :1

bevel gear 25 fixedly secured on the hub of disk 26. This disk 26 is mounted for rotation on fixed shaft 13. Fixedly secured" to. shaft l3s=above disk 26 is hub 21 of a large gear-.28; whichzgear, as illustrated in Figure 1, meshes at all 'timesrwith a plurality of smaller gears 28', the purpose: of which will presently appear. Attached. to the shaft |3, and in fixedrelation to the gear. 28-. is a limiting collar 3flxwhichzsupports .a rotary hub 3|of a spider and spacing member. 32', which. is provided with. a plurality of ring supports. 33, one for eachiof the: lower'bobbinand flier1carry+ ing members 34.

Mounted for. rotation in each of thebobbin carrying members aretsleeve-members 36 which have secured .on the upper end thereof a gear'uil It is evident that when bevel gear 24 rotates,- it meshes with bevel gear 25 and'rotates disk 26; and the members 34,.andthe mechanism associated therewith, will also be rotated. This; rotation of course will cause the gears 46 to berotated since they. mesh with a stationary. ring. gear |2., Gear 29 will likewise be rotatedisince thisrimeshes with gear 28. This rotation will cause. the lower fliers 4| to rotate in the manner; shown in: Figure 2; and also the upper fliers.42iwill be caused to rotate in the samemannen.

Each of the lower fliers 4 has abobb'inof'yarn 4|a andeach of'the. upperfliers 42 has abobbin of yarn 42a from which'the yarn'istdrawn when the machine is operating.

The structurethus far described-is fully shown and'described in said'Patent 1,765,117 and'it is with a structure of this .type'that our invention isadapted to be used. Disposed within thetbraiding machine are a plurality of verticallyrdisposed shafts 43' around whichare' centered'thelower bobbin and flier. carriers such 1 as denoted by numeral 34. In saidpatent the shafts. are solid. These are made tubular forthe purpose of receiving a part of this invention.

A vertically disposed hole. is; drilledthrough the center of each shaft 43 and a drop rod is. slidably mounted therein; A lug: is fixedly secured to the upperv end ofrod 44ai1d'lug 45Ihas arms 46 and 41' integral therewith as shownin Figures 1 and '3.

Asuitable bracket 4B'is. secured to the upper portion of housing 50by anysuitablemeans sucli asa. stud:bolt.49: andthis bracket is adapted to support one of the lugs or projections 46; The lower: flier 4|, as shownin Figure-.3, as it is rotated; will barely miss theprojectionfl; It is the purpose of .this invention to provide a suitable lug or block.52:.on the fliers 4| and 42which are held in elevatedposition above arm 4] as shownon flier 4| Figure 3,.by means of the cord or thread 53, as it passes to the braid receiving and feeding mechanism shown in said patent.

It is evident that block 52 which is slidably mounted on flier 4|, will not fall low enough to engage the projections 47 on lug 55 as long as the thread or strand 53 holds it in the position as shown. But when the thread 53 is broken, as shown in.the left-hand portion of Figure 3, on flier 42, it is evident that the block 52 will fall until it engages the projections 55. In this position, as the flier 42 rotates, the block 52 will contact the arm 46 and cause the lug 45 and drop rod 44" to rotate until the projection 46 will no longer be supported by bracket 48. At this time the drop rod 44 and the parts associated therewith, will fall downwardly in the bore in shaft 43 and operate the stop motion mechanism which will-be later described.

It isevident that regardless of which way the fliers 4| and 42 rotate that block 52 will engage eitherprojection 46 or 41 if the thread breaks and allows the block to fall downwardly to a point where the arms46 and 4'! will be in the path of travel of either. one of the fliers. By referring to Figure 2 the path of the upper flier 42 or the lower flier 4| canibe clearly seen Secured to base member I0 are a plurality of vertically disposed brackets by any suitable means such as stud bolts 63a, and on the upper end of these brackets is a suitable ring 6|, said ring 6| being rotatably mounted on the upper sideof'bracket 60. Also secured to base member H] are a plurality of brackets 62 which are secured to said member ID by means of'stud b'o1ts63. This bracket'projects upwardly and is adapted-to be bentover the upper side of a ring 6| in'amannershown in Figures 1 and 5, butthe bracket 62does not contact ring 6i'at any time.

Bracket 62 has a slot 65 therein and in this slot a suitable-dog member 66 is adapted to be pivoted by any suitable means such as a pin 87. Dog 66 has a projection or a smaller portion 66a; integral therewith which projects outwardly and is adapted to be contacted by the lower end of rods 44'when a strand of thread breaks and allows one of the blocks 52, on either one of the fliers 4| or 42 to fall and to contact one of the arms 46 or 47; Figure 9 shows the position of this dog after one of the rods 44 has fallen and caused the portion 6600f dog 66 to be moved.

Dog 66 is adapted, when-moved, to contact a bracket 68 which is adjustably secured on ring 6| by means of a screw T0 penetrating slot 69 and being embedded in ring 6|. A suitable tension spring is-secured to ring 6| and also to one of the brackets 60 which normally holds each of the brackets 68 against the dogs 86 at all times.

When one of the drop rods 44 drops, due to a broken thread, it, on account of rotation of the framework I3, engages the portion 68a of dog 66 and moves to the positionshown in Figure 9, the ring BI is caused to rotate a small amount. This rotation will cause the arm 13, which is secured to ring 6|, to move in the same direction and to operate the stop motion mechanism which comprises a member 15 which is pivoted as at it. This member 15 has two arms 15a and 751) (see Figure 6). The arm 15b of member is adapted to fit in a notch in horizontally disposed rod 78 and the other arm 15a is adapted to be contacted by bevel surface i3a of member '53.

A torsion spring 11 which is mounted around member 15 tends to press the arm 752) into the notch. ina rod-I8. at all times. The trip mechanism is supported by abracket I6 which in turn is secured to the upper side of member l6. Rod I8 is .slidably mounted in brackets I9 and 80 which are in turn. supported by base member II]. Fixedly secured on rod I8 is a collar SI and also confined between this collar 8| and bracket 80,

on the rod I8, is a compression spring 82. The right-hand end of rod 58 is bent at a right angle and has secured thereto another bent rod 85 which slidably mounted in bracket 85; This rod is adapted to partially encircle a belt 81 which is shown on fixed pulley I8. When any one of the drop rods 44 fall and contacts dog 65c and pushes it into the position. shown in Figure 7 9, the bevel surface 73o contacts arm 15a of member I and causes the. other arm 75b to become disengaged from the notch in the member I8.

The above described form of the invention will operate to stop the machine regardless of direction of rotation of the framework about fixed shaft I3.

At this time thecompression spring 82 will force rod to the left in Figure 5 and cause the belt 87 to be shifted from fixed pulley I8 to idler pulley I9, thereby stopping'the machine. It is seen that by this method the shift of the belt 31 from one pulley to another is not abrupt, but gradual, dueto the force exerted by the spring 82, thus gently stopping the machine.

In Figures 10 to 13 inclusive, a slightly modified form of theinvention is shown, in which the ring 9! is fixedly secured on top of brackets 50. Ring SI has a suitable groove therein in which another ring 92 isadapted to slide. The ring92 has secured, as at 93, a suitable tension spring 94, the

other end of spring 94 being secured to one of the supporting members I I. The tension appl ed to the inner ring 92 normally tends to pull the brackets 35 against the dogs 96, said dogs 96 being pivotedin bracket 9'! by any suitable means such as a pin 98. The bracket J5 is' adjustably mounted on inner ring 92 by means of screw 95a which penetrates slot 952). The bracket 91 is secured to the ring BI by any suitable means such as bolts 89 which threadably engage the ring 9| in holes see. The dog 95 has an arm I02 integral therewith which is adapted to be engaged or contacted by drop rods 4 when a thread is broken and the rod is caused to fall.' Figure 13 shows the position of this dog and also the inner ring 92 when the stop motion mechanism is being operated.

Fixedly secured to the ring 92 is a member 23 which has'a beveled surface Ifl3o. This beveled surface lead is adapted to contact one end of trip mechanism I9 5 which has two arms integral therewith, namely, Iil tct and 5942). This trip mechanism I54 is mounted in bracket I88 which in turn is securedto base member II). The arm Idea is contacted by beveled surface "33a and the other arm ii ib adapted to fit in a suitable notch in red I95 and is held in this position by means of a torsion spring 5&5 which encircles the hub portion of member I54. Rod I 85 is slidably mounted in brackets Hi and H2 and on rod I236 is fixedly secured a cuff 553. This cuff H3, together with bracket 5 is adapted to hold compression spring I I4 on rod When a thread is broken and the drop rod MI causes member H2 5 to trip or push the rod H24 out of the notch in member Iii-5 it is evident that the rod 1.85 will move to the left in Figure 10 and cause the member 85, which is secured on the right-hand end of rod I as, to engage thebelt 8i and pull it from the fixed pulley It to the idler pulley l9. As stated in the main form of the invention,this movement of belt 81 from one pulley to another is gradual, thus insuring that no damage will be done to the belt.

It might be stated that in this form, as well as in the preferred form, regardless of the direction in which the braiding machine is moving,'.the result will be the same, namely, the stop motion will be operated in the same manner. For example, referring to Figure 13, if the machine should be operated in the opposite direction from that shown by the arrow, the dog 98 would be pushed in the opposite direction by drop rod 44 and the portion of the dog nearest the observer, would engage bracket '95 and push it to approximately the position shown, instead of the portion farthest from'the observer, engaging the bracket.

Figures 14 and 15 show anothermodified form of the inventionin which the stop motion is operated when the machine is going in only one direction, namely, in a. clockwise direction. This form of the machine is used when the shift of the belt from the fixed pulley to the idler pulley is desired to be instantaneous. In this. form of the invention the brackets 59' have irotatably mounted on the upper end thereof a suitable ring I20. This ring has integral with 'theupper surface thereof, a plurality of shoulders I2la which are adapted to be engaged by the drop rods 44 when a strand of thread is broken and the drop rods are allowed to fall-directly on top of ring I 20. This ring also has a plurality of radially disposed pins i251: in the outer periphery thereof. The pins I251: engage the upper portion of the lever .I2I which projects downwardly and is pivoted as at I 22 to bracket I23, and bracket I23 is secured to the base member I9.

Pivotally secured asat I2t is a horizontally disposed rod I25 which projects to the right in Figures 14 and 15 and'is slidably mounted in bracket I25. This rod I25 also has a member 85 on the right-hand end thereof which engages belt 8'. and it is evident that when one of the drop rods fall, that the rod is pushed to the left and the belt 81 is likewise shiftedfrom fixed pulley I8 to the idler pulley I9. A suitable lever I23 is pivoted as at I29 to a bracket I39, said bracket I30 being secured to base'member I0. This .lever I28 projects upwardly and is pivoted as at I3I' to rod I25 and the upper end thereof is adapted to be grasped by ones hand and pulled to the left when the machine is desired to be stopped by manual means.

In Figure 2 the fliers have been designated by the additional reference characters A to L in-' elusive for the sake of making clear the description of the method of operation. Here it is seen that fliers A, C, E, G, I and K are the ones provided with the bores therein in which the.

drop rods 44 are disposed. The fliers B, D, F, H, J and L do not have. these bores and rods, as it is not necessary, for it is seen that arm 41 in flier A is engaged by the weight 52 on flier B and also the Weight'52 on flier C. Also, the arm 45 in flier A is engaged by the weight 52 in fliers L and K. The weight in flier L engages arm 45 in flier A and also arm 41in flied K. Likewise, the weight in flier K engages the arm'4I in the flier I as well as the arm 46 in flier A. The same is true as to the other fliers,.as it is seen that the long thread carrying arms 4! do not engage the rod associated with its flier, but engage the rods associated with the adjacent rod-carrying fliers, while the short thread carrying'arms 42 engage the rods on the. proximate fliers. It is thus seen thatfwhen the failure of a strand occurs in a-fiier' it .cannot'rotate, through an arc of more" than 240 degrees before the slidable member on its arm'engages a drop rod to'stop the machine.

Figures 16, 1'1 and-18 show a modified form of. the invention which is'particularly adapted to be used with machines which are already'installed. .In the forms of invention shown inFigures l, 3, 5, and 10 it is necessary to bore the vertical shafts 43 in order to insert the drop" rods. This is a-very convenient structure when the machine is being manufactured complete at the factory but in order to install a mechanism of this kind on a machine already operating, some diificulty is encountered in removing these shafts and boring them. It is evident that by placing therings up near the upper portion' of the braiding machine and by'providing pivoted members associated with the several fliers, that it will. not be necessary to bore'the shafts and therefore a stop motion device can be installed on machines already in use without the necessity of dismantling the'machines and boring the shafts for the insertion of the drop rods.

In the form shown in Figures 16 to 18 inclusive, the rings and the attachments secured thereto, are very similar to the form shown in Figures 10 to 13 inclusive. This mechanism is also adapted to stop the machine when a strand is broken regardless of the direction of rotation of the braiding machine. In order to construct a stop motion of this type we have provided a tripping dog I 40 which has vertical projections I GI and I42, said dog being secured as at I43 to the housing 50 of the braiding machine.

It can be seen by referring to Figures 16 and 17 that'the projections MI and I42 are normally out of the path of'travel of the fliers II and 42 but when block 52, which is mounted on each of the fliers and normally held in an elevated position by a strand, falls upon the breaking of the strand, one of the projections MI and I42 will be in the path of this member and the tripping'dog I40'will be partially revolved. This principle is very similarto the principle shown in the preceding form but it should be noted thatthe dogI40 is not pivoted on the shaft 43 but is slightly removed from the shaft and is pivoted on the top of the housing 50. The tripping dog I40 has another upwardly projecting member I44 integral therewith and this member I44 is sharpened at its upperend, which sharpened portion supports a projection I45 which is integral with the member I46. Member I46 is slidably mounted on a vertically disposed rod I41 which is secured tothe upper portion of housing 50. A compression spring I48 is confined above member I46 and around the rod I01 by means of a nut I49 and this spring normally holds the projection I45 down and against the upper edge of member I44.

Member I46 has another downwardly'project ing member I50 integral therewith, the lower end of which normally clears the stop motion mechanism associated with the ring when the braiding machine is rotating, but it is evident that when one of the strands 53 breaks and allows the block 52 to fall downwardly to a position shown in Figure 18 that the member I40 will be rotated, which rotation will cause projection M4 to be moved from beneath the projection I45 and allow the member I46 and the projection I50 integral therewith, under pressure of spring I08, to fall downwardly.

By referring to Figure 17 it can be seen that in the lowermost position of member 6 that projection I50 in its rotation will engage horizontally projecting portion'I5I and operate the mechanism associated with the ring which will presently be described.

. Projection I5I is integral with pivoted member I52, said member I52 being pivoted to bracket I53 as at I54. This member I52 is very similar to member 66 which has been previously described, and projection I5I is similar to projection I02. (See Figure 13.) Bracket I53 is secured to stationary ring I55 by any suitable means such as bolts or rivets I58 andmountedwithinring I55 is another ring I56 which is similar in'all respects to ring 92. An adjustable bracket I60 is secured to the inner ring I56 by any suitable means such as a screw or bolt I 6| penetrating slot I62.

When the projection I50 engages one of the arms I5I themember I52 will be slightly rotated about pivot point I54 very much in the same manner shown in Figure'13 which will impart a slight rotation to the inner ring I56. Since the pivoted members I52 are normally held in contact with the vertical leg of bracket I 60 by any suitable means such as a spring I secured to the inner ring as at I66 and also secured to the framework I61 as at I 69,- the ring I66 will return to its normal position after rotation has been'imparted to this ring and the machine has been stopped. A member I10 is secured to inner ring I56 and this member has a beveled surface I10a which contacts arm I04a of the tripping mechanism. This mechanism is identical to that shown in Figure 10 and described in the preceding' description.

In Figures 19, 20 and 21 a slightly modified form of the lower portion of the stop motion is shown, this form of stop motion being adaptable for operation with the actuators in the position shown inFigure l or with the actuators in the positionshown in Figure 16, it being evident that the stop motion ring can be made large enough to encircle the structure as shown in Figure 16, or made small enough to go beneath the structure as shown in Figure 1.

In this form of the invention, insteadof having the'ring similar to the ring I20, shown in Figure 15, which only actuates the stop motion when the braiding machine is running in one direction, a ring 1'15 is provided which will actuate the stop motion regardless of which direction the framework of the braiding machine is rotating. This ring I15 is mounted for sliding movement on suitable brackets I16 which in turn are secured to uprights I11 which are secured at their lower ends to the base I0, not shown in this figure. The ring I 15, instead of having the projections which have one side thereof sloping, such as shown by I20a, in Figure 14, have projections I18 with vertically disposed sidewalls disposed radially therearound and spaced apart from each other, and when a drop rod 44 or I50, as the case may he, falls downwardly, it will be engaged by the next succeeding raised rib I18 to actuate the stop motion mechanism.

On the outer circumference of ring I15 are a plurality of triangular projections I19 which have two sloping sides so as to actuate the stop motion mechanism regardless of the direction of travel of ring I15. The stop motion mechanism is very similar to the structure shown, for example, in Figure 10, and only a, portion thereof is shown.

We have a plate I88 suitably supported by the base plate. and some distance thereabove. and on In Figures 24 and 25 another form is shown in 7 Figure 19, and on the upper side thereof, has a' notch in which one end I86 of a bell crank lever is adapted to rest. This bell crank lever is pive ote'd on a bolt I8I disposed between upstanding portions I88 and I89 of a bracket ISi'I'and a torsion spring I9I, has one end thereofsecured' to portion I88 and the other end passes around the upwardly projecting leg I92 of the bell crank lever,

the purpose of the torsion spring being vto hold.

the parts in the position shown in Figures 19 and 20 and to prevent the belt shift from'being operated. Y

The upstanding portion I02 of the bell crank lever has both sides thereof beveled to a point so that when any one of projections I19 engages these beveled surfaces it will push the portion I92 of the bell crank lever to the left in Figure 20-or.

towards the observer in Figure 19 and this will raise portion 585 of the bell crank'lever out of the notch in the rod I83 and will allow compression spring I84 to actuate the belt shift and stop the machine which will be a gradual movement.

Any suitable form may be arranged for mount ing the ring I15, Figure 21 showing a type of forked brackets H76 and'the ring I15 having a circular projection I75a therearound which fits;

into these forks to slidably support the ring.

In Figures 22 to. 25 inclusive, a slightly modified form of the member held in elevated position on the fliers by strand tension is shown: In

the previous figures, the member 52 on the fliers 4! and 42, is shown heavy enough to fall by gravity to a position where it will engage the means forreleasing the drop rods to allow them to fall and stop the machine. It is evident that the heavier these members 52 are, the more liable they are to be a detrimental influence onaccount of the centrifugal force, as the fliers are revolving and tend to throw the weights 52 outwardly. In the forms shown in Figures 22 to 25 inclusive, these members which are held in elevated positionby strand tension, are very much lighter in weight-than in the previous figures, and a spring is employed to move the members downwardly upon failure of strand tension. This enables the weight to be very much lighter because the spring acts to force it downwardly at all times.

In Figure 22 the flier 42 is shown as having a pair of holes therein as in the other forms, but projecting outwardly from the lower portion of the vertical portion of the flier,-is a bracket 200 having a pin 20I therein on which is pivoted a light weight member 202 which has an eye-portion 203 through which the strand passes.

The other end of the member 202 most removed from the eye-portion 203, has secured theretoa tension spring 204 and the other end of the tension spring is secured to pin 205 and it is seen in Figure 22 that strand tension holds the member 202 in horizontal position and distends tension spring 204, but upon failure of the strand or strand tension, the member 202 will assume the position shown in Figure 23 and therefore engages the members I4I or I42 in Figure 18 or.

the members 46 and 41 in Figure 3 to stop the machine.

which the fliers 42 or H have the light weight member 205a slidably'mountedxthereon andthe strand 53 is'adapted to passjthrough a hole and beneath the member 205a to hold it in elevated position as shown in the drawings.

The flier 42 has projecting therefrom ears 205 and 201 which are penetrated by pins 208 and 209 which serve as guides for compression springs 2I0 and 2 I I, the upper ends of the springs fitting against the projections 206 and 201 and the lower ends of the springs fitting against the member 205a and normally forcing it downwardly but the strand tension holds it in. elevated position but upon failure'of strand tension or failure of a strand, the member 205a will be forced downwardly by springs 2I0 and 2 until it occupiesa position against the horizontal portion of the flier 4l or 42, as the case may be, and therefore will be in the path" of the projections MI .and I42 inFigure 18 or the projections 46 and 47 in Fig ure 3, depending upon which type of apparatus is employed in the machine proper.

It is thus seen thatavery light weight'member can be employed which will not affect the flier on account of centrifugalforce, and yet the springs will force this light weight memberdown wardly upon failure of a strand or upon failure of strand tension to stop the machine. I

In the drawings and specification there has been setforth preferred'embodiments of the invention, and although specific terms are .used, they are employed in a generic and descriptive sense onlyv and not for purposes of limitation, the scope of the inventionbeing set forth in the appended claims;

We claim:

1. In a braiding machine having a base and a rotating framework mounted thereon, a plurality of revolving fliers disposed aroundthe periphery of the framework, at least some of the said fliers having a drop member associated therewith,

meansintegral with said drop member and sup-i ported by said framework for normally holding:

said drop members in elevated position, a stop motion device located beneath said drop members, means carried by said fiiersand held in elevated position bya strand and engaging said drop members upon the exhaustion of, or parting,

of a strand, to remove the drop member from its support and allow it to fall to engage and operate said stop motion device, said stop motion device comprising a plurality of fixed supports mounted on said base, a ring memberslidably mounted on said fixed supports, an arm secured to said ring member, a plurality of brackets ad-v justably mounted on said ring member, a. trip mechanism normally contacting said arm and secured to said base member, a second set of brackets fixedlysecured to said base member and having'pivoted means mounted therein normally engaging said adjustably mounted brackets,said

pivoted means being engageable by said dropmember when a strand parts to impart rotation to said arm and ring to operate said trip mechamsm.

2. In a braidingmachine having a plurality of rotary fliers adapted to receive a strand of braiding material as it is fed to the braiding mechanism,l a slidable member mounted on each of said fliers and held in elevated position by said braiding material, an actuating member associated with at least some of said fliers, supporting means for holding said actuating members in elevated position, a stop motion device normally out of engagement. with said ac'tuatlng'members, projections onsaid actuating members-normallyv out of the path, of travel of the adjacent fliers but disposed within the path of travel of said slidable members when said slidable members are allowed to fall upon exhaustion of braiding material to remove said actuating member from said supporting member and allowing it to fall to engage said stop motion device.

3.1In a braiding machine provided with a plurality of rotary fliers each adaptedto receive a strand of braiding'material as it is fed to the braiding mechanism, .a slidable member confined on each' of saids'fliers and adapted to'have vertical sliding movement thereon, said member being normally held in .elevated position by said strands, an'actuating member mounted concen trically of alternate fliers, supporting means for holding said actuating. members in. elevated position, a stop motion device normally out. of engagement with said actuating members, tripping means integral with the upper end. of said actuating members normally out .of the path of travel of adjacent fliers but disposed-within'the path of travel of saidslidable; members when said slidable members areallowedto fall upon. exhaustion of material or parting of a strand,:to actuate said tripping means to allow said actuating member to fall and engage and operate said stop-motion device.

.4. In a-braiding machinehaving a base member, a rotating framework, anda pluralityof rotary fliers mounted in said framework, 21 drop member associatedwith the. fliers, means onsaid -fliersfor operating said dropmembers when a strand parts, a slidably mounted-ring member, a base for holding said ring member, a plurality of adjustable brackets secured to said ring member, afixed arm secured to said ring member, a trip mechanism movable by said arm, a second set of brackets fixedly secured-to said base and having pivoted means mounted therein normally engaging said adjustably mounted brackets, said means being engageableby said drop members when a strand partsto impart rotation to said arm and ring to: operate said trip mechanism.

.5. In a braidingmachinahaving a base, a rotating framework mounted on-said base and a' plurality of fliersmonnted in said framework, a

stop motion mechanism, an actuator associated with some of said fliers,:means onrsaid fliers normally held in inoperative position bya strand tension for operatingsaid actuatorupon failure of strand tension, a fixed ringmember, a second ring member slidably-mounted in said'first 1 ring member-,a fixed armsecnred to said second ring member and a trip mechanism operable by said arm, a plurality of: brackets fixedly secured to said first named ring member and having pivoted means mounted therein, a pluralityof brackets adjustably secured to said secondring member and engageable by said pivoted means, said pivoted means being. engageable by one of said actuators upon failure of strand tension to impart ro- -tation to said arm and second ring to operate said trip mechanism.

6. In a braiding machine'having a base member, a rotating framework and a plurality of fliers rotatably mounted in said framework, an actuator associated with some of said fliers, means on said fliers normally held in inoperative position by a strand for operating said actuators in the absence of said strand, a rotatably mounted ring having notches in the upper side thereof and disposed belowsai'd actuatorsand normally-out of engagement with the lower end of said actuators, a belt shift'pivotally secured to said base member and means integral with said ring for positively operating said belt shift when a strand parts and causes an actuator to engage one of said notches.

7. In a braiding machine having a base member, a rotatingframework and a plurality of fliers rotatably mounted in said framework and having means'for receiving a strand, an actuator associated with some of said fliers, means on said fliers held in elevated position by a strand for operating said drop rods when a strand parts, a ring member slidably supported by said base and means for holding said ring member in one position, a plurality of brackets adjustably secured to said ring member, a fixed arm secured to said ring member, and a trip mechanism engageable by said arm, a second set of brackets fixedly secured to said base member and having pivoted means mounted therein normally engaging said adjustably mounted brackets, said pivoted means being engageable with said actuators whena strand parts to impartrotation to said ring and arm to operate said trip mechanism and a belt shift pivotally securedto said base member, and being normally held in inoperative position by said trip mechanism.

8. A braiding machine having a rotatable framework, a plurality of packages of yarn disposed on the framework, a plurality of fliers mounted on the'framework and means for rotating the fliers around the packages of yarn while the framework is rotating, a slidable member mounted on each flier, means on the fliers for receiving'th'e strands to hold the member in ele vated position, stop motion means, a vertically slidable membermounted on the framework and having its lower end normallyv held out of engagem'entwith the stop motion means, the member held in elevated position by the strand being movable by gravity by parting of a strand to engage said member and move it out of normal position to allow it to fall by gravity to engage said stop motion means to stop the machine.

'9. A braiding -machine having a revolving framework having a plurality of packages of yarn disposed thereon and a plurality of fliersmounted on the framework for rotation around the pack-ages of yarn as the framework revolves, a member held in elevated position on the fliers by a strand passing therethrough, a plurality of drop members mounted on the framework and means for holding thedrop members in elevated position, the members on the'fiiers in the absence of a strand the fliers falling by gravity to release said drop members for falling, and means operable by the fallen drop members for stopping the revolving framework.

10. A braiding machine having a revolving frameworkhaving a plurality of packages of yarn disposed thereon and a plurality of fliers mounted on the framework for rotation around the packages of yarn as the framework revolves, a member held in elevated position on the fliers by a strandpassing therethrough, a plurality of drop members mounted onthe framework and means for holding the drop members in elevatedzposition,'the members on the filers inthe absence of a strand in the fliers falling by gravity to release said drop members for falling, and means'operable by the fallen drop members for stopping the revolving framework, comprising an annular member mounted for rotation about the same centeras the'revolving framework and movable by a fallen drop member, and means operableby the annular member for stopping the framework from revolving.

11. Stop motion means for a braiding machine comprising a vertically sliding rod mounted concentrically of alternate fliers, means for suppor ing the rods in elevated position, a weight on each flier held in elevated position by the strand passing through the flier, means on the rod engageable by the members on the fliers moving about the proximate rods as a center and by the weights on the proximate fliers for moving the rod from its supporting means and allowing it to move downwardly and means engageable by the lower ends of the rods when in lowered position for stopping the mechanism.

12. In a braiding'machine having arotating framework having a plurality of packages of yarn disposed thereon, a plurality of fliers mounted for rotation around the packages of yarn and disposed around the periphery of the framework and equidistantly spaced from the. center of the framework, an axial support for each flyer, each of said supports having a centrally disposed bore therein, a vertically slidable rodmounted in each of said bores, means for normally holding .the rods in elevated position, a movable member mounted on each flier and held in elevated position by the tension of a strand passing therethrough, the movable member engaging the rod upon failure of the strand tension to move the rod to allow it to fall in its bore, and means disposed below the rotating framework and engageable by the lower end of the fallen rod t stop the machine.

13. In a braiding machine having a plurality of fliers, a stop motion mechanism comprising a member movably supported on each of the fliers by a strand passing through the fliers, a vertically slidable rod and means for normally supporting the rod in elevated position, rotatable means disposed below the lower end of the rod and normally held in stationary position out of contact with the rod, means on the upper end of the rod engageable by the members supported on the fliers in the absence of a strand in a flier to move the rod from its support and to allow it to fall and engage and operate the rotatable means to stop the machine.

14. A braiding machine having a rotatable framework, a plurality of fliers mounted on the framework and means for rotating the fliers while the framework is rotating, a movable member mounted on each flier and held in one position by the strand carried by the flier, stop motion means disposed below the framework, a vertically slidable rod disposed concentrically of at least some of the fliers and having means thereon for holding it out of contact with the stop motion means, the means held by the strand on the fliers in the absence of a strand being engageable with the means for holding the rod out of contact with the stop motion means to move the rod to cause it to engage the stop motion means to move the same to stop the machine.

15. In a braiding machine having a rotating framework, a base member for supporting the rotating framework, a plurality of rotating fliers mounted on the framework, at least some of the fliers having stop motion actuating means thereon, means for normally forcing said stop motion actuating means downwardly, means for normally holding said stop motion actuating means in elevatedposition, a stop motion mechanism, means carried by said fliers and normally held in elevated position by a strand and slidable downward upon exhaustion of a strand for engaging the stop mo tion actuating means to remove it from its sup-. port .to permit the means for normally forcing it downwardly to move it into engagement with the stop motion mechanism.

16. In a braiding machine having a rotary framework and a plurality of rotary fliers mounted in the framework, and having means for receiving a' strand therethrough, a vertically slidable member mounted on each of the fliers and held in elevated position by a strand passing through the flier, an actuating member associated with each flier and means for moving the actuating member, a support for each actuating member, normally. preventing'movement of the actuating member, a stop motion mechanism operable by the actuating member, the slidable member on the flier upon lessening of the strand tension therein falling downward to engage and move the actuating member into engagement with the stop motion mechanism.

17. A braiding machine having a rotary framework, a pluralityof packages of yarn disposed on the framework, a plurality of rotary bobbin fliers and-disconnecting the driving means to and from the framework, means normally pressing the shifting means to disconnecting position, means for holding the shifting means in connecting position, means on the fliers held normally in elevated position by the strands passing there-- through, and means operable by means on said means on the fliers upon parting of a strand for engaging said annular member to release the holding means for the shifting means to stop the machine.

18. In a braiding machine having a. rotating framework and a plurality of fliers mounted for rotation in the framework and being disposed around the periphery of the framework, some of the said fliers having a vertically and centrally disposed bore therein, a drop rod mounted in each of said bores, cooperating means on the rods and the fliers for normally holding the rod in elevated position, a movable member disposed below the framework and having projections the thread carrying member, engaging said 00- operating means associated with another flier to allow the rod to fall to engage said movable member, and means operable by said movable member for stopping the machine.

19. In a braiding machine having a rotating framework and a plurality of rotating fliers disposed around the periphery of the framework, an axial support for each of the fliers, supports for alternate fliers having a vertically and centrally disposed bore therein, a drop rod disposed within each of said bores, a support on the flier frame and means on the rods'engaging said supports for normally holding the rods in elevated position, a thread carrying arm for each flier, a member slidably mounted on each thread carrying arm and held in elevated position by a strand passing therethrough, the member on the thread 'carr'yingarm of adjacent fliers, when allowed to fall by absence of yarn tension, engaging the means on the rod to remove it from its support, and stop motion means disposed below the framework and engageable by a fallen rod to stop themachine.

20. A braiding machine having a revolving framework supporting a plurality of yarn packages and fliers mounted for rotation around the yarn packages, means for driving said revolving framework, means for normally holding the driving means in connection with the revolving framework, a plurality of vertically movable members supported on the frameworkand normally held in elevated position, means operable upon a lessening of strand tension for tripping said vertically movable members and allowing the same to move downwardly, a normally stationary annular member disposed concentrically of the revolving framework, fixed means asso ciated with said annular member, a plurality of pivoted means associated with said annular memberand said fixed means, but disconnected from the annular member, and movable by a fallen vertically movable member for moving said annular member to move the driving means out of connection with the revolving framework.

21. A braiding machine having a revolving framework supporting a plurality of yarn packages and fliers mounted for rotation around the yarn packages, means for driving said revolving framework, means for normally holding the driving means in connection with the revolving framework, a plurality of vertically movable members supported on the framework and normally held in elevated position, means operable upon a lessening of strand tension for tripping said vertically movable members to cause the same to move, to lowered position, an annular member disposed concentrically of the framework and movable by a fallen vertically movable mem her and means controlled by movement of the annular member for disconnecting the driving means from the framework.

22. In a braiding machine, a revolving framework, a plurality of drop rods disposed on the framework, means for normally holding the drop rods in elevated position, means controlled by the tension of the yarn in the braiding machine for actuating said drop rods to allow them to fall, a normally stationary annular member disposed concentrically of the revolving framework, means for driving the framework, means controlled by the annular member for normally holding the driving means connected to the revolving framework, and pivoted means disconnected from the annular member movable by a fallen drop rod for moving the annular member for moving the driving means to disconnected position with relation to the said framework.

23. In a braiding machine having a revolving framework, means for driving the framework, means for normally holding the driving means in connection with the revolving framework-a plurality of drop members on said framework normally heldin elevated position, means op' erable upon lessening of strand tension for causing'at least one of said drop members to fall to lowered position, a movable annular memberdisposed concentrically of the revolving framework, stationary means supporting the annular member, a phuality of members pivotally supported by said stationary means and engaging said annular member and movable by a lowered drop member for moving the annular'member and means movable by said annular member for disconnecting the driving means from said revolving framework.

JOHN F. SCHENCK, SR." PAUL S. MONTY.

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