US1971158A - Separable fastener attachment machine - Google Patents

Description

Aug. 21, 1934. |v|. KIESSLING' ET L SEPARABLE FASTENER ATTACHMENT MACHINE s .Shets-Sheet 1 Filed May 16, 1952 INVENTORL} Max Klesshn Adol ph J. Kriege r BY ohn Draher.

SEPARABLE FASTENER ATTACHMENT MACHINE Filed May 16, 1932 3 Sheets-Swat 2 INVENTORfS Max Kiesshnq. Adolph J.Krieqer.

BY Joh n D ra her.

ATTORa EY Aug. 21, 1934. M. KIESSLING EI' AL SEPARABLE FASTENER ATTACHMENT MACHINE '1932 3 Sheets-Sheet 5 Filed May 16 l 7 INVI-ilgTORtf Max Klesslmq Adolph J.Kr1eqer John Drqher W749 ATTORNE Patented Aug; 21,- 1934 UNITED STATES PATENT oF-ricF.

- 1,911,151; SEPARABLE FASTENER ATTACHME MACHINE Max Kiessling,'Adolpl1 J. Krieger, and John Draher, Waterbury, Conn., assignors to The Sterling Novelty Manufacturing Company,

Waterbury, Gonn., a corporation of Connect- Application May 10, 1932, Serial No. 611,450

' 16 Claims.

This invention relates to a machine for attaching a seriesof rows of separable slide fastener elements upon a continuous strip of tape, and

' more particularly to a machine of the above nature having means for adjusting the length of eachto install and manipulate, compact, ornamental in appearance, and very efficient and durable in use. With these and other objects in view there has been illustrated on the accompanying drawings, one form in which the invention may be conveniently embodied in practice. a

In the drawings: Fig. 1 represents a plan view of the machine. Fig. 2 is a fragmentary rear sectional elevation view of the machine, taken along the line 2--2 of Fig. 1, looking in the direction of the arrows.

Fig. 3 is a detail perspective view of the ratchet timing mechanism for controlling the spaces between the successive rows of fastener elements, the

parts being shown in operating position.

Fig. 4 is a view similar to Fig. 3, showing the parts in an inoperative position. 1

Fig. 5 is a wiring diagram of the electrical control mechanism and diagrammatically showing certain of the cooperating mechanical working parts of the machine.- a

Fig. 6 is a diagrammatic perspective view showing the' operating relationship of the essential working parts of the machine. a

Fig. '7 is a rear elevational view of the ratchet timing mechanism, certain parts being broken away to show the interior construction.

Fig. 8 is a perspective'view of the main.operating switch located upon the tape guide fall.

of pair of upwardly extending integral T-shaped brackets and 16 having integral hollow bearing bosses 17 and 18 for receiving four horizontal shafts 19, 20, 21 and 22 which are located'parallel to the sides of the table 1.0 and have their center lines in the same. plane with the top of said table 10.

The shaft is the 'maindriving shaft of the machine and is provided on one end with a cooperating friction cone clutch 23 and a clutch pulley 24 receiving power from a belt, not shown.

' he clutch 23 is adapted to be thrown into and ou of engagement with the pulley 24 by means of a sliding thimble 25 loosely fitted'upon the'extremity of the shaft 20 and having a pin engagement with a bifurcated end 26 of a manually operated hand lever 2'7. The lever 27 is fulcrumed to the bossed extremity 28 of an outwardly extending bracket 29 attached'to one of the bearing bosses 18, as best shown in Fig. 1.

The two side shafts 19 and 21 are operatively connected to the main driving shaft 20 by means of two pairs of miter gears 30, 31 and 32, 33, said gears being respectively keyed to the extremities of said shafts 19, 20, and 21 see Fig. 1). The side shaft 21 is similarly connected to the front shaft 22 by a pair of miter gears 34 and 35. The forwardend of the side shaft 21 is provided with ,a reduced section 2111 to the extremity of which is rigidly secured a hand wheel 36 for the purpose of manually adjusting the machine when the clutch 23 is disengaged. The pairs of intermeshing miter gearsare encased within triangular s'haped'guard housings 37, 38, and 39 attached to the several bearing bosses'1'7 and '18.

In order to provide reciprocatory motion'to each of the four slides 11, 12, 13 and 14, the shafts 19, 20, 21 and 22 are provided-with cam wheels 40, 41, 42 and 43 rigidly secured thereupon. Each of the cam wheels is provided with a face cam groove 44 forreceiving a guide roller 45, said rollers being mounted-on lateral pins carried by the extremities of the slides 11, 12, 13 and 14.

, The numeral 46 indicates a continuous strip of tape which isadapted to be intermittently pulled through the machine at,a uniform rate" of speed andisadapted to receive a succession of separated rows of separable fastener elements 47, the jaws of whichare securely closed upon the reinforced edge of said tape 46 by the reciprocating members of the four slide machine. The tape 46 is preferably fed to the machine from a roll 48, as best shown in Figs. 2 and 6. The tape 46 is adapted to be passed up through a slot (not shown) in the center of the table 10 and passes 1 intermittently rotated by mechanism to be de- .to the left of the table 10, as viewed in Fig. 1.

The tape 46 is drawn horizontally along the top of the guide rail 53 by means of a pair of friction'rollers 54 and 55 located at the opposite extremity of said rail 53 from the depending section 52. The lower friction roll 55 is mounted on a bearing block 56 rigidly secured to the end of the guide rail 53, while the upper friction roll 54 is mounted on the forward end of a stud shaft 57 journaled in the free end of a swinging arm 58 pivoted to the upper inner end of the bearing block 56, as by a'bolt 59.

In" order to cause the upper friction roll 54 to rotate and keep the tape 46 under uniform tension at all times, a small sheave 60 is keyed to the rear end of the stud shaft 5'7, and is adapted to be driven by means of a cord belt 61 connecting said "sheave 60't0 the constantly rotating cam wheel.40, which has a peripheral guide groove #32 for receiving the cord belt 61. The two friction rolls-54 and 55 are held in contact with the tape by means of a weight 63 suspended on a cord 64, the upper end of which is attached to the free end of the swinging arm 58. The fastener elements 47, previous to thei attachment to the tape 46, are contained within a magazine 65 securely held in an upright position by means of a bracket member 66 secured to said table 10 just behind the center point of the four slides 11, 12, 13 and 14. The slide 12 in this machine is the feed slide and operates in a dovetailgroove 67.

The slide 12 consists of two members, a linkfeeding member and a cam-operated member, said members being resiliently connected by a compression spring. These members are made relatively slidable by means of pin and slot or telescoping connections, both such constructions being well known.

As Fig. 6 is merely a diagrammatic showing of the magazine 65 and slides 11, 12, 13 and 14, the exact shapes of the fastener handling parts of these members are not shown. It is obvious, however, that the fastener engaging ends of the slides must be so shaped as to accommodate them to the form of the fastener, and the magazine must be so constructed at its lower end as to allow the slide 12 to remove a fastener therefrom at each reciprocation of said slide. Constructions of this type are Well known.

When a fastener is removed from the magazine by the slide 12, it is pushed astride the tape 46, and theslides 11, 13 and 14 advance and coact to close the jaws of the fastener element securely upon the reinforced edge of the tape. The. slides 11,12,13 and 14 are then simultaneously withdrawn, and the operation is continued until the desired number of fastener elements 47 have been attached in. a row upon the tape 46..

During the outward stroke of the four slides, the, tape 46 will be permitted to be moved upwardly a predetermined distance under the force of the friction rollers 54 and 55, said distance one to one ratio, said gears'71 and 72 being keyed to said shafts 68 and. 69 (see Fig. 1) The forward end of the shaft 69 eirtends a short distance beyond the gear box 70 and has securely attached thereto a fine tooth ratchet wheel 73 which is adapted to beintermittently rotated by means of a reciprocating slide 74 having a spring pressed pawl (not shown) pivoted at its inner end and adapted to engage the teeth on said ratchet 73. The slide 74 is encased in a slide housing 75 fastened to the surface of the table 10. The slide 74 is actuated by a cam wheel 76 similar to the cam wheels 40, 41, 42 and 43, and having a face cam groove 77 within which is engaged a follower roller 78, said roller 78 surrounding a pin extending laterally from the exposed end of said slide 74. The ratchet 73 is held against accidental rotary movement by means of two leather brake pads 79 and 80 located in contact with the opposite faces of the ratchet. The brake pad 80 is adapted to be resiliently pressed against said ratchet wheel 73 by means of a tensioned metal plate 81 supported on a pair of screw studs 82 and 83.

Electric operating devices '84 adapted to be actuated by the passing there- 'under of the spaced rows of fastener elements;

(2) an ordinary plunger switch 85, and a magnetically operated plunger 86 operated by the closing of the switch 84. The plunger switch 85 and the plunger 86 are operatively comfected with a ratchet driven timing unit 87 to be later described in detail. The switch 84, as best shown in Fig. 8, consists of a rectangular shaped metal block 88 having a longitudinal groove in its lower face for fitting over the rear edge of the tape guide rail 53. The block 88 is horizontally adjustable along the guide rail 53 and is adapted to be clamped thereon in any adjusted position according to the length of the rows of fasteners desired, asby a winged set screw 89.

Attached to the top of the block 88, as by screws, is a rectangular shaped plate 88a having an integral offset rounded lug 90, within which is formed a concentric aperture for receiving an insulating flanged bushing 91. The bushing 91 has a central tapped hole for receiving an adjustable set screw 92 which may be locked in adjusted position by means of a nut 93. g The set screw 92 also serves as a binding post for connection with a conduit cord 94 leading to the plunger switch ,ment with the bindingpost screw 92.

The swinging lever 95 has a depending heel 98 which is adapted to rest upon th topsof the fastener elements 47 as they are jiorne along the guide rail 53 by the intermittent movement of the tape 46, the contact finger 97 being thereby held down out of contact withthe binding screw 92. r

In order to cause the contact finger 97 to swing upwardly into contact with the binding screw 92 to close the circuit of the switch 84, provision is made of a resilient wire feeler spring 99 having alooped extremity 100, said spring 99- being adapted to'press upwardly upon said finger 97 at all times.

By means of this construction, it will be seen that whenever the heel 98 rides off of the row of 2, the plunger switch 85has an elongated plunger rod 101 adapted to be pressed toward open circuit position (orthe left as viewed in Fig. 6) by an interior spring, not shown. I

The plunger rod 101 is in alinement with an offset arm 102 forming part of a triple action pivoted lever 103 to be hereinafter described. A

The plunger switch 85 is preferably permanently attached to the table surface 10, as by screws 85a, being insulated from said table by means of a thick rectangular leather base 104. The plunger switch 85 is provided with a pair of insulated binding posts 105 and 106 for connection to conductors-94 and 107 leading to the fastener operated' switch 84'and one side of the power source respectively. The opposite side of the power source is connected by another conductor 108 to one binding postv 109 of the magnetic plunger mechanism 86. The plunger mechanism 86 is attached to the forward edge of the table 10 (see Fig. 1). -The essential parts of the mechanism 86 are. a pair of magnetic coils 1l0-which, when energized. are adapted to withdraw a pivoted detent latch 111 out of a V-shaped notch 112 out in the side of a slidable plunger rod 113. The forward end of the plunger rod is squared at 113a and integrally joined to a bracket member 114- having a section depending below the base of the mechanism 86 and'connected to one end of a helical spring 115. The opposite end of the spring 115 is fastened to apin 115d depending from the underside of the base of said switch 86. The plunger rod 113 is arranged in alinement withlan elongated rod 116 which in turn registers with an upstanding arm 117 forming a part of the triple action lever 103 previously mentioned. The rod 116 is supported by means of a bearing block 118, which block also acts as a support for the tape guide rail 53. In order to permit the plunger 113 to be automatically returned to its normal locked position, the depending bracket 114 has a lateral pin 119 securedto its lower end upon which is journaled a roller 120 which is adapted to ride against the perimeter of an oval shaped cam 121. The cam 121 is mounted on the rear face of thecam wheel 43, and is adapted to engage the roller 120 only when the plunger rod 113 has snapped forwardly to its unlocked position. It will be understood that the bed plate l0 of the machine acts as a ground" for the switches 84 and and the magnetic plunger device 86 in order tocomplete the electrical circuit therethrough.

Thetiming unit 87 is located at the rear of the bed plate 10 upon which it is supported by,an

overhanging block 123. The block 123 has a horizontal stud spindle 124 upon which is mounted a ratchet wheel 125. The outside face of the ratchet wheel has an annular'raised cam face ,rod 128 is slidably fitted within a countersunk bore 129 formed in the supporting block 123, and

is engaged by.a compression spring 130 which also engages an adjustable plug-screw 131v fitted within the tapped open end of said bore 129.

In order to interrupt the'action of the feed slide 12 for producing the I desired blank spaces or intervals on the fastener tape between rows of fastener elements. provision is made of a horizont'al locking slide 132 having a detent nose 133 on its forward end. The slide 132 is adapted to engage an abutment block 134 on the feed slide 12 for holding said slide 12 against reciprocating motion for the necessary period of time. The locking slide 132 is guided by a bearing block 135- and the support block 123. The locking slide 132 is rearwardly pulled at all times by means of .a helical spring 136, one end of which is attached to a'vertical pin 13'! secured to the top of the slide 132, while theother end of said spring 136 is attached to a pin 138 preferably secured to the block 123.

To force the slide 132 into locking engagement with the feed slide 12, the lever 103 has a'depending am 139 located in alinement with said slide Jhe lever 103 is pivoted upon a vertical post 140 secured to, the-table 10. The locking slide 132 is provided on its rear edge with an arm 141 having a beveled edge 141a which is' adapted to lie in contact with the ratchet wheel cam face 126 (see Figs. 3'and 4) A raised S-shaped arm 142 is attached to the top of the slide 132 at the junction point of the arm 141 and said slide 132, and is provided with a lateral pin 143 which is adapted toengage the under side of a ratchet driving pawl 144. said pin serving to normally hold said pawl 144 out of engagement with the ratchet teeth. The pawl 144 is pivoted on a pivot stud 145 carried by an oscillating lever 146, which in turn is pivoted on the reduced threaded end 124a of the ratchet spindle 124, said lever being held in place on said spindle 124 by means of a thrust washer 147 and a nut 148.

The pawl 144 is adapted to be pressed downwardly at all times by a stim spring wire 149, one.

end of which is attached to the upper edge of the oscillating lever 146 by a screw 150. The other end of said spring 149 presses against a shortpin 151 extending laterally from the side of said pawl 144. r

In order to oscillate the lever'146, a half-moon cam 152 is mounted on the main driving shaft 20 in alinement with the edge of said lever 146.

It will be understood that when *the beveled end 141a of the arm 141 lies in the notch 12'! of the ratchetcam 126, the locking slide 132 and the attached S-shaped arm 142 will be in the rearmost or unlocked position, as shown in Fig. 4. Moreovengsince the pawl 144 will at this time be held upwardly out of the teeth of the ratchet wheel 125, the ratchet will not be rotated.

Operation The switch 84 will first be clamped in the desired adjusted position' on the guide rail 53, said position being determined by the predetermined amount of fastener elements 4'l 'which are to be applied to the tape 46 in each 0 the successive rows. The open space on theape 46 between said rows will of course depend upon the number of teeth in the ratchet wheel 125. Y

The plunger switch 85 will-remain in closed position while the fasteners are being attached.

When the heel plate 98 rides off the end of the row, the switch 84 will close and complete the circuit through the magnetic plunger device 86.

116- to the right as shown in Fig. 6. The triple actionlever 103 will then be rocked about its axis causing the slide 132 to lock the feed slide 12 and permitting the switch 85 to open under the This will cause the plunger 113 to move the rod influence of its spring. The tape then continue to pass along :the guide rail 53 until the ratchet wheel 125 has been intermittently rotated one revolution by thei-pawl mechanism. The arm 141 will then drop into the notch 127 releasing the locking slide 132 which will be instantly moved away from the block 134 and will permit the feed slide 12 to again operate. When the locking slide 132 is thus released-the attached spring 136 will force said slide 132 against the action of the lever 103, which in turn will swing the lateral arm 102 into contact with-the plunger rod 101, moving it to the right as shown in Fig. 6 and closing the switch 85.

The plunger rod 113 of the magnetic device 86 will normally be held in locked position by the detent 111 as diagrammatically shown in Fig. 5.

The machine may be started manually by moving the hand lever 27 to the right, as shown in Fig. 1, which action will throw in the clutch 23' and start the revolution of the four geared shafts 19, 20, 21 and 22 and the attached cam wheels 40, 41, 42 and 43. At the same time the slides 11, 12, 13, and 14 will be reciprocated for attaching the fastener elements 47 fed from the magazine 65 upon the intermittently advancing tape 46, and said elements will continue to.be attached to said tape 47 until the initially attached element comes into contact with the looped extremity 100 of the wire feeler 99.

The looped extremity 100 will then be caused to ride upon the top of the elements 47, which action will cause the finger 97 toswing upwardly into contact with binding post 92 and close the circuit including the conductors 94, 107 and 108, the plunger switch 85, andthe magnetic device 86. As soon as the coils 110 arethus energized, the detent 111 will be raised, releasing the plunger rod 113 and permitting it to snap to the right,

as viewed in Fig. 6, under the influence of the spring 115 and striketherod-116. The rod 116 in turn will strike against the upright arm 117 of the triple action lever Causing it to swing on its shaft 140.

As already described above, this will'simultaneously cause the plunger switch to be opened and the'slide 132 to be forced into locking engagement with the feed slide 12. The ratchet wheel 125 will also start to revolve at the same time. a

By opening theplunger switch 85, the circuit through the magnetic'plunger device 86 will be opened, preventing the coils 110 from further energization. The plunger rod '113 will be drawn forwardly and reset in locked position by means of the roller 120 acted on by the oval cam 121. As soon as the plunger rod 113 is reset, it will be obvious'that the elongated rod 116 will be released from'the triple action lever 103 andsaid lever will remain in a neutral position.

After the locking slide 132 has been moved into locking position, as shown in Figs. 1 and 6, it will be held in such a position against the influence of the spring 136, by means of the beveled end 141a of an offset arm 141 of said 10c g slide 132, which beveled end engages agains the annular face of the ratchet wheel cam 1 6. The slide member 12 will remain in the locked position shown in Fig. 6 for the period of time that it takes the ratchet wheel 125 to make one complete revolution,-after which time the beveled end 141a will snap into a notch 127 in said (:am- 126. This will permit the spring 136 to retract the slide 132 from 'the feed slide 12,- and the engagement of theopposite end of said slide 132 with the arm 139 of the triple action lever 103 will cause the arm 102 to close the plunger switch 85. The feed slide 12 will then start reciprocating, and the attachment of the fastener elements 47 to the tape 46 will continue-until the above described cycleof operation has been repeated.

If it is desired to increase or decrease the length of consecutive unbroken 'rows of elementsto be attached to the tape 46, it will only be-necessary for th operator to move the contact switch 84'.

along the rail 53 in the proper-direction.

While there has been disclosed in this specification one form in which the invention may be embodied, it is to be understood that this form is shown for the purpose of illustration only, and that the invention is not to be limited to the specific disclosure but may be modified and embodied in various other forms without departing from its spirit. In short, the invention includes all the modifications and embodiments .coming within the scope of the following claims.

, Having thus fully described the invention, what is claimed as new, and for which it is desired to I secure Letters Patent, is:

1. In a machine for attaching fastenerelements toa strip .of tape, a stationary magazine for feeding said elements, a carrier slide for removing said elements successively from said I .magazine and moving them horizontally into clamping position, means for clamping them along theedge of said tape, and means for rendering .said carrier slide inoperative for a short period I of) time to leave a blank space on said tape between successive rows of elements. r

2. In a machine for attaching fastener elements to a strip of tape, a stationary magazine for feeding said elements, a carrier slide for re-'- moving said elements successively from said magazine, means for clamping-.themalong the edge of said tape, and means for locking said carrier slide for a predetermined length of time while the tape continues to pass through the machine.

3. In a machine for attaching fastener elements to a strip of tape in a series of spaced rows, a vertical magazine for holding a. stack of fastener elements, means for successively conveying said elements to said tape, means for aflixing said elements along one edge of said tape, means for intermittently movingsaid tape between the fastener clamping operations, and means actuated by the afiixed fastener elements for rendering said conveying means inoperative for a predetermined period of time to leave a blank space between thenext two rows of elements.

4. Inv a machine for attaching fastener elements to a. strip of tape in a series of spaced rows, a vertical-magazine for holding a stack of fastener elements, means for successively conveying said elements to said tape, means for affixing said elements along one edge of said tape, means for intermittently moving said tape between the fastener clamping operations, and electrical means responsive to the interruption between two.

successive rows of elements to render the con- -veying means inoperative for a period of time sufficient to leave a similar space atthe next-interval between said rows.

5. In a 'machine for attaching fastener elements to a strip of tape in a'series of spaced rows,

a vertical magazine for holding, a stack of "fas'-.

tener elements, means for successively 'convey-' ing said elements to said tape, means for affixing said elements along one edge of said tape, means fastener clamping operations, means actuated by for intermittently moving said tape between the 1,971,158 the afllxed fastener elements for rendering said conveying means inoperative for a predetermined period of time'to leave a blank space between the 6. In a machine for attaching fastener elements to a strip of tape in a series of spaced rows, a vertical magazine for holding astack of fastener elements, means for successively conveying said elements to said tape, means for affixing said elements along one edge of said tape, means for intermittently moving said tape between the fastener clamping operations, and an electric switch having a contact member resting on the elements affixed to said tape and actuated to close the switch by the interruption between two successive rows of elements to render the conveying means inoperative for aperiod of time sufficient to leave a similar space at the next interval between said rows.

'7.-In' a machine for attaching fastener elements successively to an intermittently moving strip of tape in a series of spaced rows, 2. magazine for feeding a stack of fastener elements, means for affixing said elements in successive rows to said tape, a guide rail for said tape, and means mounted on said guide rail for pulling said tapeat a uniform speed.

- 8. In a machine for attaching fastener elements successively to an intermittently moving strip of tape in a series of spaced rows, a magazine for feeding a stack of fastener elements, means for affixing said elements in successive rows to said tape, a guide rail for said tape, means at one end of said guide rail for exerting a continuous pull upon said tape, and means at the other end of said guide rail for intermittently feeding said tape.

"9.In a machine for attaching slide fastener elements to the edge of an intermittently moving strip of tape, a magazine containing a stack of said elements, a carrier slide for feeding said elementsinto position to be clamped upon said tape, means for affixing said elements to said tape, means for locking the carrier slide for a predetermined period to produce a blank space on said tape between successive rowsof elements, and

' time-operated means to disconnect said locking mechanism at the end of said period.

10. In a machine for attaching slide fastener elements having side jaws to the'edge of an inter-' mittently moving strip of tape, a magazine containing a stack of .said elements, a carrier slide for feeding said elements into position to be clamped upon said tape, means for clamping said 11. In a machine for attaching slide fastener elements to the, edge of an intermittently moving strip of tape, a magazine containing a stack of said elements, a carrier slide for feeding said elements into a position to be clampedupon said tape, means for locking said carrier slide for. a

predetermined period to produce a blank space on said tape between successive rows of elements, and cam operated means ,to disconnect said locking mechanism at the end of said period.

12. In a machine for attaching slide fastener elementsto a continually moving strip of tape, a carrier slide for feeding said elements to said tape into clamping position, and means for automatically locking said slide for predetermined intervals for producing a series of interrupted rows of elements upon said tape. I

13. In a fastener attaching machine, a table, four reciprocating slides cooperatively converging at the center of said table, one of said slides being a feed slide, a magazine located above said feed slide, a guide rail for guiding an intermittently advancing strip of tape through the center of said table and .off to the side of said machine, means connected to said feed slide'for conveying said fasteners to the center of said table when the other three slides coact to attach said fastener members upon the edge of said tape, and means for locking said feed slide at predetermined intervals.

14. In a machine for-attaching fastener elements to a continually moving strip of tape, means for feeding and aflixing said elements to said tape, a guide rail for leading said tape from said machine, an electric switch located on said rail, means for closing said switch actuated by the elements aflixed to said tape, a magnetic device energized by the closing of said element operated switch, means operated by said magnetic device for locking said feedingmeans, and means for disengaging said locking means after a predetermined length of time.

' 15. In a machine for attaching slide fastener elements to a continually moving tape, anelectric switch responsive to the elements aflixed to said tape, said switch having a fixed contact and a pivoted contact arm, said arm having a depending heel adapted to ride along the top of said elements for normally holding said arm away from said fixed contact, a depending spring feeler attached to said contact arm for pressing said arm upwardly toward said fixed contact, said contact arm being forced into engagement with said fixed said rows, a magnetically operated plunger energized by the closing of said switch, means operated by said magnetic plunger for rendering said feeding means. inoperative, a second switch adapted to'be opened bythe operation of:.said plunger for opening the circuit through said plunger, and means to closesaid second switch and render said feedingand aflixing means operative after a predetermined lengthof time.

MAX KIESSLING.

ADOLPH J. KRJEGER. -JOHN DRAHER.

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