US1760963A - Tube frame for axminster looms - Google Patents

Description

June 3, 1930. w. w. ROBERTSON TUBE FRAME FOR AXMINSTER LOOMS Fi led Feb. 19, 1929 VIIIIIIIIA II Farmed w- 9 1,760,963

WILLIAM WQROBERTSDN, or wonossma MAssAoHUs rrs' ASSIGNOB 'r'o; orvoivrr'roir @KNOWLES LOOM WORKS, 015 WORCESTER MASSACHUSETTS, A" CoRroItA'rIoN or MASSACHUSETTS c, 1. r 1' i I TUBE FRAME 130R AXMINSTER LOOMS A pplica tion filed Fa e ia-" eaeq Serial in. 341,118. V p

1 This invention relatesto improvements in" :place under strain that portion of thespring I tube frames for Axmin'ster looms and it isthe which engages {the retaining. pin, said progeneral object of the invention to provide. an jecting portion cooperating with-the stop limproved means for retaming a cham engag- I motion and also be ng engageab'le by an apbe readily removed when repair is needed but wardly'with respect to the tube frame so as will ordinarily be held securely-in position. to release the retaining pin.

V The usualAxminster loom employs a'pair f. It is; a more particular object of my in of transporting chains between whi ch are ventionto provide a tube frame with a bracket 10 suspended tube frames carrying the'variously having an opening th'ereinthrough whichq r colored tuft yarns which form'gthe surface may eX-tenda deformedpart of a; spring latch, v ofthe Axminster fabric.- The tube frames said deformed part *cooperating witha reare'held by releasable connections to the tainingpinin such a way as. to prevent endchain and these connections'are engagefdby wise movement of the'latter ther'ebyholding may be moved from the chain'to tuft f0rmtube frame and bracket. It is sufficient for ing position near the fabric; It isdesirable .the purposes "offmypresent invention ifthe that the connectioiiibetween the tube-frame retaining pin, spring andbracket areso reand the chains be. durable and alsoquickly lated thatit isnecessary. to move a portion 1 2 replaceable in case of breakage. Ithasbeen of the spring relativelyto the bracket in orcustomary heretofore to employ in tube der to-provide clearance. for-the removalof frames both of the'narrow and wide type a the pin. :Thisfresul't'may beaccomplished in pair of spring members held to the brackets the dilferentway set forth hereinafter but on the ends of thetube frames by means of I do notwish: to be limited totheseparticular been replaced several times the. screws are .With these and other-objects in viewwhich not strong enough to be held very tightly-to will. appear as the description proceeds, my 2 the bracket and it is an object-of my present invention resides in the combination and-arinvention to eliminate theuse-of screws or rangementof parts hereinafter described and similar connections between the springs and set forth in the claims. V

the fl this T651111? being mpl e In theaccompanying drawings wherein a p ly'by y ng 1 1 the inherent'reconvenient embodiment of my invention issilience of the spring or springs to hold are- Set f th, f V I p v {A tammg pm m Fig. lis afront'elevationofone end ofa a I In s l a 100m if 'i a tube frame formedaccording to my inven-- .Stop motlon'whlch operates'to'stop t 00m tion the preferred form ofthe invention be- 1 1f the tube frame fails to be released from arts bein vin Section and there the transporting chains. =This motion vusualh j 1 th 1y cooperates with a projecting portion of 325 2 9m V917 s 9 F Q P'. 4n. I", the tube frame. It 1s afurther ob ect of my I g 2 is an end elevation lookingiinr the I present invention to provide the latch springs withga lower'bent portion. which extends f l. f W garound a retaining pin to hold the latter in F g-. 5 an arg flem h011Z0I1ta1 position, the lower portion of the spring prosectlon on line 3-3 of F1g. 1, 1 Y

jecting outwardly from the tube frame to Fig.4 isa view similarto a portion ofFig. 90

ing spring hook or latchso that the same may propriately formed: tool to be pressed in-QEO clutches so that the tube frames one at a time; said 'pinin fixed position with respect to thefl i screws. I find that after the springs have forms of pins or engaging portions therefor i 1 but with a modified form of retaining pin, and i Fig. 5 is a detailed horizontal section on line 55 of Fig. 4.

Referring particularly to Fig. 1, I have shown a tube frame 10 which may be of tubular metallic stock formed substantially rectangular in cross section. A bracket or head 11 has a spool bearing portion 12 to receive the gudgeon of a spool S and said bracket may also be provided with a chain engaging member 13 having an offset tongue 14:to eX- tend between the links 15 of a transporting chain. The members 11 and 13 are provided with parallel spaced arms 16 and 17, respectively, which are inserted into the tubular bar 10 and held in position by screws 18.

A clutch C is mounted on a stud 19 which is supported by and movable with a transferrer arm not shown. Said clutch is movable angularly about the axis of the stud when the tube frame is adjacent the cloth to effect proper entry of the tuft yarns between the warp threads .of the fabric. The upper portion of the clutch is provided with a releasing screw 20 which engages a portion of the spring latch 21. A plunger having a head 22 is also slidably mounted in the clutch and is part of the previously mentioned loom stopping mechanism. The upper end of the spring latch 21 is formed with a hook 23 as shown in Fig. -1"to lieover and have tube frame supporting engagement with one of he links 15 of the transporting chain.

The matter thus far described is of com mon construction and of itself forms no part of my present invention. It is to be understood that the transporting chain is given successive movements so that the tube frames, several of which are employed in the loom, will be presented successively to tuft forming position. The movement of the chain is intermittent and while it is at rest t 1e clutches will move inwardly to engage the spring hook to move the latter to the dotted line position shown in Fig. 1, after which the clutch is moved downwardly, the tube frame moving with the clutch because of the fact that the hook 23 is out of holding position with respect to the transporting chain.

My invention relates more particularly to the manner for retaining the spring latch in position on the tube frame. As shown in Figs; 1, 2' and?) I have provided the member 13 with a vertical slot '30. The lower end of the spring is. formed with a V-shaped bend 31 :havingthe vertex thereof extending into the tube'frame. The lower portion of the spring normally projects as at to the rightof the member 13 as shown in. 1. 'The preferred form of the pin as shown in Figs. 1,2 and 3 is indicated at 40 and is shown more particularly in Fig. 3-, where it will be noted that the intermediate portion of said pin a1 "is reduced, 'th'u's defining heads 42'at't'he ends of the pin. The vertex of the V-shaped bend in the spring is received between the heads and the two sides of the bend are normally under strain or stressed so as to hold said pin against the upright portion of the member 13. In this way the pin is held against longitudinal displacement by reason of the fact that the spring is restrained against transverse movement with respect to the tube frame by the walls of the sl0t'30.

The slot is sufliciently large to permit unobstructed insertion of the V-shaped portion of the spring, but after said portion and the pin are placed as shown in Fig. 1 they will be held substantially rigid with respect to the tube frame.

In the modified form of pin shown in Figs. 4 and 5 I provide a pin with an offset portion 51 proportioned to enter the slot 30. The inner portion of the pin as shown at the left hand side thereof in Fig. 5 has a recess 52 to receive the spring, the pin in effect being formed by a single punching and cutting-off operation. In the modified form it will be seenthat the pin is held against longitudinal movement by engagement with the sides of the slot 30 and also by reason of the fact that the spring which enters the slot 52 is held substantially in position by'the side walls of the slot30.

In operation that portion of the spring which lies within the tube frame either'is substantially rigid, the pin serving to retain the spring-in position and being held as shown in Fig. 1 by the resilience of the V-shaped portion of the spring. When it is desired to replace a spring an appropriate tool'T, as shown in dot and dash lines in Fig. 4, bemoved against the projecting end 32 of the spring to move said end inwardly toward the tube frame. This action will result in a deformation of the V-shaped portion 31 until the same assumes some such a form as indicated in dotted lines in Fig. 4, after which the pin may be moved endwise to pass out of one or another of the notches 53 formed in the opposite vertical walls of the tube frame 10 as shown clearly in'Fig. 1.

After a new spring is inserted and held deformed as indicated in Fig. L the same pin or a freshpin may be put in position, after which the tool T may be removed and the resilience of the spring will move the pin against the bracket due to'the factthat the portions of the spring which engage the upper and lower ends of the slot are inclined.

With respect to the modified form of the invention, particularly as shown in Fig. 5, it will be seen that the amount by which the V-shap'ed portion of the spring must be moved into the tube frame before the pin of the modified form can be removed is substantially twice the offset, due to the fact that said offset enters the recess 52 on the side of the pi'n'opposite the slot 30. For this reason metres the modified form of pin is subject 'to less accidental displacement than is the case with operate with the slot-Vin the bracket to hold the pinagainst' said bracket. Also, the

spring latch may be removed, or replaced without disturbingthe bracket 11. It will also be seen more specificallythat the pin and spring have interengaging portions which prevent longitudinal displacement of the pin due to the fact that the spring is held against displacement by the slot Having thus described my invention it will be seen that changes and modifications may be madevtherein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to'the detailsherein disclosed, but what I claim is:

1. In an Axminster tubeframe having a longitudinal bar, a bracket secured to the bar and having an opening therethrough, airinherently resilient spring latch extending through the opening and engaging the bracket on opposite sides of the opening, and latch retaining means held against the bracket by the resilience of that portion of 'the lspring latch which passes through the opening.

2. In an Axininster tube frame having ainclined sides and the bracket and held ainst the latter by the resilience of said inclined sldes. e

3. In an Axminister tube frame havinga longitudinal bar, a bracket secured to the bar and having an opening therethrough, an inherently resilient spring latch entering-the opening at one side thereof and being bent to leave the opening at the opposite side thereof, said spring latch engaging the bracket on opposite sides of the opening, and a retaining member located between a bracket I and the bent portion of the spring latch and held by the resilience of the latter against the bracket.

4-. In an Axminster tube framehaving a longitudinal bar, a bracket secured to the bar and having an opening therethrough, an in herently resilient spring latch having a portion formed with a surface inclined with respect to the bracket, said portion with the ining, and a latch retainer held against the clined fsu'rface extending through the open- 1 bracket by the resilience of that portion of the latch which passes through the opening.

Y 5, In an'Axminster tubeframe having a longitudinal bar, a bracket secured to the bar and having an opening therethrough, an

inherently resilient spring latch the lower portion of'w'hich passes through the slot and engages tha-tportion-of the bracket adJaCent the upper'end of the slot, the portion of the spring latch which enters the slot being bent;

and extending out of the slot'and in contact with that'portion of the bra'cketadj acent the lower end of the slot, and retaining means interposed between the bent portion of the spring latch and that side of'the'bracket opposite the side of the slot which the spring latch enters, the inherent resilience of the spring latchholding the device against the bracket. f 1

6. In anAxininstertube frame having a longitudinal bar, a bracket secured to thebar and havin an opening therethrough, 'a spring latch thelower' end of which isinherently' resilient andextends into the open- 7 ing, a retaining pin held bythe inherent re-j 7. In a tube frame for anAxminster loom,

a longitudinal bar, a bracket member secured to, the bar having an opening 'therethrough, the latch member having a resilientportion which extends through the opening, and a retaining element held by the resilienceof the latchmemberragainst the bracket' mem ber-,,said retaining'element having a shoulder to engage one of the members andbeingjheld thereby, against longitudinal movement.

8. In an Axminister] tube frame, a' bar, ay 1 bracket secured to "the bar and having an of which is resilient and extends' into theopening to engage the bracketon' onesideiof said-opening and is bent and extends out of the opening to engage the bracket on theop I posite side of the opening, thelatter portion projecting beyond the outer surface ofthe 7 bracket to be inI-p'osition-to be engaged and:

moved toward the'bracket to" cause deformation ofthatportion of the latch which extends through the opening, and a-retaining element engagedand-held against the bracket-by the inherently resilient portion of the latch which extends through the opening v .9. In an Axminster tube frame, a bar, a

bracket secured to the bar and having an a no openingtherethrough, a latch the'lower end I part of the bracket adjacent the upper end of'the slot and extending through the latter and being bent to project out of the slot on the same side of the bracket as the side from which the latch enters the slot, the portions of the brackets defining the sides of the slots acting to prevent substantial sidewise movement of the latch, and a pin held against the bracket by the inherent resilience of the bent portion of the latch which extends through the slot.

10. In an Axminster tube frame, a bar, a bracket secured to the bar and having an opening therethrough, a latch the lower end of which is resilient and extends through and is substantially as wide as the slot, the re-- silient portion of the latch engaging that part of the bracket adjacent the upper end of the slot and extending through the latter and being bent to project out of the slot on the same side of the bracket as the side from which the latch enters the slot, the portions of the brackets defining the sides of the slots acting to prevent substantial sidewise movement of the latch, and a pin held against the bracket by the inherent resilience of the bent portion of the latch which extends through the slot, the pin'having a shoulder to be engaged by the latch whereby longitudinal movement of the pin is resisted.

11. In an Axminster tube frame, a longitudinal bar, a bracket member secured to the bar and having an opening therethrough, a latch member the lower portion of which is resilient and extends from the outer side of the bracket through the opening and is bent and then returns through the opening to project beyond the outer side of the bracket, the latch member being substantially the same width as the width of the slot, and a retaining element having a shoulder to engage one of the members to be held by the latter against longitudinal movement.

12. In an Axminster tube frame, a longitudinal bar, a bracketmember secured to the bar and having an opening therethrough, a latch member the lower portion of which is resilient and extends from the outer-side of the bracket through the opening and is bent and then returns through the opening to project beyond thev outer side of the bracket,-

the latch member being substantially the same width as the width of the slot, and a retaining element having a shoulder to engage the latch member to be held by thelatter against longitudinal movement, said latch member acting by the inherent resilience thereof to hold the pin against the bracket.

13. In an Axminster tube frame, a bar, a bracket secured to the bar and having an opening therethrough, a latch member the lower portion of which is resilient and extends into the opening in the bracket and is bent to project back through the opening, the lower portion of the latch having engage-

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