US1724277A - Tube frame for axminster looms - Google Patents

Description

g 13, 1929- A. A. GORDON Q 1,724,277

TUBE FRAME FOR AXMINSTER LOOMS Fi led Nov. 25, 1927 A'LBE/F'T Q0/ 250 JMMM Patented Aug. 13, 1929.

UNITED STATES PATENT OFFICE.

ALBERT A. GORDON, OF WORCESTER, MASSACHUSETTS, ASSIG-NOR TO CROMPTON & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

TUBE FRAME FOR AXMINSTER LOOMS.

Application filed November 25, 1927.

lhis invention relates to improvements in tube frames for Axminster looms and it is the general object of the invention to provide a hook having a rigid chain engaging portion and having other portions reduced sothat the hook maybe inherently resillent and tend by its resilience to remain in operative relation with the transporting chain of an Axminster loom.

Axminster looms usually comprise a pair of spaced parallel transporting chains whlch support a series of so-called tube frames on which the variously colored pile yarns are carried. The tube frames are attached to the transporting chain by means of hooked members, one at each end of the tube frame, and these members are normally effective to support the tube frame but can be moved by clutch mechanisms to releasing position when it is desired to move the tube frame from the transporting chain to pile forming position. It has been proposed heretofore to use hooks made of flat spring material but these have ordinarily been secured to a vertical part of the tube frame bracket or hanger and have shown a tendency under certain conditions to become loose or broken. It has also been proposed to make a rigid latch which may be pivoted to the bracket or hanger and held in normal yielding position by a separate coil spring, but such a construction necessitates a pivot and the springs are short because ofthe limited space which they may occupy. I have found that the hooks so constructed offer a widely varying degree of resistance to the releasing clutches so that it is not uncommon to find a tube frame subjected to a force tending-to move the same laterally from its proper position due to the unequal resistances of the springs.

Variations in the material from which the hooks are made causes a slight lack of uniformity in the resilient qualities of the hooks and in order to overcome this defect I provide an additional spring for each hook member, thus affording means for varying the pressure exerted by the hook member. Under ordinary conditions the total force exerted by the hook will be made up partly of the force exerted by its own resilience and partly by the pressure of the auxiliary spring and this total pressure can be increased by Serial No. 235,609.

compressing the auxiliary spring or reduced by expanding the latter spring.

Axminsterlooms are customarily pro vided with a stop motion of the type set forth in Patent No. 1,546,685 to Streimer, the train of mechanism being effective to stop the loom when a tube frame fails to be released from the chain and including a clutch having an overhanging part which is held in raised position by a projection extending from a portion of the tube frame bracket or hanger. It is a further object of my present invention to provide the mounting for the aforesaid auxiliary spring with a slight extension which normally affords the means by which the pressure exerted by said spring may be varied but which will also constitute the element which lies under the overhanging part of the clutch to effect stoppage of the loom when desired. 7

It has been found that inherently resilient hooks of the type heretofore used have not been held very securely to the tube frame with the result that they have been subject to twisting strains which contributed to their failure. It is a further object of my present invention to extend the portion of the hook of reduced thickness into the hollow tubular bar which forms the body of the tube frame and to clamp said reduced part between the lower wall of the hollow bar and one of the parallel arms which extend into the bar from the hanger or bracket, said reduced end of the hook being substantially the same width as the interior plistance between the vertical walls of the With these and other objects in View which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein one form of my invention is shown,

Fig. 1 is a front elevation of the tube frame having my invention applied thereto, showing the improved spring hook located at each end thereof,

Fig. 2 is an enlarged detailed front elevation of one end of the tube frame set forth in Fig. 1, the hook being in. normal chain engaging position,

Fig. 3 is a view similar to Fig. 2 but with certain parts in Vertical section and with a releasing clutch indicated in dot and dash lines, 7

Fig. 4 is a view similar to Fig. 3 with the clutch omitted but with the hook member moved to releasing position,

Fig. 5 is a detailed vertical section on line 55 of Fig. 3, and

Fig. 6 is a detail showing the lower end of the spring hook looking in the direction of arrow 6, Fig. 4.

Referring to the drawings it will be seen that I have provided a tube frame 10 formed of a'h-ollow tubular bar 11 having secured thereto a plurality of yarn tubes 12 which receive the yarn ordinarily wound on spool S. Said spool has gudgeons which are received by the spool bearing member 13 the lower end of which has an arm 14 extending horizontally into the tubular bar and is secured to the latter by means of screws 15. A second member 16 has a chain engaging tongue 17 which extends between the links 18 of the transporting chain. The lower end of said member has a horizontal arm 19 which extends into the tube, said arms 14- and 19 being the means by which the hanger or bracket is held to the tube frame. The members 13 and 16 may be socured together in any way as by welding. The matter thus far described is common 7 in tube frames for wide looms and forms no outwardly.

- is substantially part of my present invention.

In' carrying my invention into effect it strike a tongue 30 from the arm 20 and extend the same downwardly to receive the threaded end of an adjusting screw stud 32 which projects to the right of the tongue 30 as shown in Fig. 3 through an opening 33 formed in the member 16. A chain engaginghook 34 with a head35 to cooperate with one of the links 18 extends through a slot36 formed in the member 16. The lower end of said hook has an opening 37 through which projects the right end of the stud 32'. A compression spring 38 surrounding a portion of the stud 32 lies between the threaded portion 31 thereof and a substantially vertical portion 39 struck from the hook member through which the stud projects. Said spring 38 normally presses against the hook member to hold the same The lower end of said hooked member is reduced in thickness as at 40 and extends horizontally into the hollow. tube between the arm- 19 and the lower portion of the hollow bar 11,,as at 4-1, and is held in place by the screws la which secure the arm 19 in the hollow bar 11. By this construction the upper part; of the hook which engages the chain and extends through the slot 36 rigid while the lower part of the hook is resilient;

Another feature of the hook is that the lower end is broadened as indicated in Fig. 6, where it will be seen that the portion 40 is substantially the same width as the inside distance between vertical walls of the tubular bar. By this construction the hook is held against angular movement in a horizontal plane.

Under normal conditions the inherent resilience of the reduced portion 10 of the hook will force the latter to the right as viewed in Figs. 2, and l, holding the head 35 against the tongue 17 and above'one of the links 18 so that the tube frame will be supported by the transporting chain. The spring 38 will also exert an outward pressure against the hook and this pressure may be varied by turning the stud by means of a screw driver which may lit into av slot 42 formed in that part of the stud which extends beyond the hook. The purpose of providing this second spring 38 is to enable the operator to adjust the tension of the hooks on the tube frame so that the hooks at each end may be under substantially the same tension and therefore be moved to releasing positions by equal pressures on the part of the releasing clutches, so that the tube fran'ie will have no force exerted thereon tending to move it laterally from its normal position when being released from the chain.

The clutches which release the tube frame from the transporting chain are formed as indicated in dot and dash lines in Fig. 3 where one of the clutches is shown. The clutch O has an overhang 43 which moves against the hook to release the latter, said overhang at such times lying over the extended end of the stud 32 so that should the tube frame be held to the chain the clutch will be held up by the stud 32 to stop the loom as set forth in the aforesaid Streimer patent.

From the foregoing it will be seen that I have provided a tube frame hook a portion of which is substantially rigid and thick to engage the chain while the other portion which is received by and securedto the tube frame is reduced and thereby rendered flexible enough to permit the upper rigid part of the hook to move away from the supporting link 18. It will further be seen that the lower widened portion il) is substantially the same width as theinterior of the tubular bar 11 so that the extension -l-l effectively prevents twisting of the hook. Furthermore, the spring 33 ali'ords means to vary the pressure exerted by the hook so that the hooks on each, tube l'rame may he made to oii er practically the same resistance to movement. It will also be seen that the extension of the stud ailiords stopping means by extending into the path of the overhanging portion of the clutch O. 1

Having thus described my invention it will be seen that changes and modifications may be made therein 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 details herein disclosed, but what I claim is:

1. In an Axminster tube frame comprising a hollow tubular bar having a bracket provided with parallel spaced arms which extend into and are secured to the bar, a hook member the upper end of which is substantially non-resilient and terminating with a hooked end and the lower end of which is reduced in thickness to render the same resilient, and means to secure the lower reduced end of said hook member in fixed position relatively to the tube frame.

2. in an Axminster tube frame comprising a hollow tubular bar having a bracket provided with parallel spaced arms which extend into and are secured to the bar, a hook member having the upper part thereof relatively heavy and non-flexible and terminating with a hook and having the lower end of reduced thickness to render said lower end resilient, said reduced lower end of the hooked member extending between one of the arms of the bracket and the adjacent wall of the hollow carrier bar,

3. In an Axminster tube frame comprising a hollow tubular bar having a bracket provided with parallel spaced arms which extend into and are secured to the bar, a hook member having the upper part thereof relatively heavy and non-flexible and terminating with a hook and having the lower end oi reduced thickness to render said lower end resilient, said reduced lower end of the hooked member extending between one of the arms of the bracket and the adjacent wall of the hollow carrier bar, and means extending through said arm, reduced portion of the hook member and the adjacent wall of the tubular bar to secure said parts together.

l. A hook member for an Axminster tube frame bracket, said hook member comprising an upper substantially rigid and nonresilient portion terminating with a hooked end and having the lower end thereof of reduced thickness to be resilient and flexible, said reduced flexible portion having a horizontal attaching extension.

5. In an Axminster tube frame comprising a hollow tubular bar having a bracket provided with parallel spaced arms which extend into and are secured to the bar, a hook member having the upper part thereof relatively heavy and nontlexible and having the lower end of reduced thickness to render said lower end resilient, and indepei'ldent resilient means interposed between the tube frame and the hook member tending to move the latter normally outwardly, said hook member being held in normal position by the pressure exerted jointly by the independent resilient means and the resilient part of said hook member.

6. In. an Axminster tube frame comprising a hollow tubular bar having a'bracket provided with parallel spaced arms which extend into and are secured to the bar, a hook member having the upper part thereof relatively heavy and non-flexible and hav ing the lower end of reduced thickness to render said lower end resilient, a stud adjustable as to horizontal position and supported by the bracket, and a compression spring located between the stud and the hook member and tending to move the latter out-7 wardly, said hook member being held in normal position by the pressure exerted jointly by the independent resilient means and the resilient part of said hook member.

7. In an Axminster tube frame comprising a hollow tubular bar having a bracket provided with parallel spaced arms which extend into and are secured to the bar, a hook member having the upper part thereof relatively heavy and non-flexible and hav ing the lower end of reduced thickness to render said lower end resilient, a stud located. within the tubular bar and supported for adjustable movement longitudinally of the bar, one end of said stud extenijling through the hook member to be guided by the latter, and a spring surrounding a portion of said stud and exerting an outward pressure on said hook.

8. In an Axminster tube frame having a bracket with parallel arms to extend within a hollow tubular bar fori'i'iing part of the tube frame, said bracket to cooperate with a clutch having an overhanging portion, a hook member having the upper portion substantially rigid and non-flexible and having the lower portion reduced in thickness to be rendered resilient, the lower portion being attached to the bracket, means to exert an outward pressure on the hook member including a guide stud, said stud projecting through and beyond the hookmember to be engaged by the overhanging portion of the clutch.

9. In an Axminster tube frame having a bar and a bracket secured thereto to cooperate with a clutch having an overhanging portion, a hook member mounted on the bracket and capable of angular movement with respect thereto, resilient means normally exerting an outward force on the hook, and a guide device for the resilient means extending through and projecting beyond the hook member, that portion of the guide means projecting beyond the hook member lying under the overhanging portion of the clutch.

10. In an Axminster tube frame comprising a hollow tubular bar having a bracket provided with parallel spaced arms which extend into and are secured to the bar, a hook member the upper end of which is non resilient and terminating with a hooked end, the lower end of the member being reduced in thickness to render the same resilient, resilient means interposed between one arm and member tending to move the latter normally outwardly, and means to secure the lower reduced end of said hook member in fixed position relatively to the tube frame,

the vertical portionbeing non-flexible and provided with a hooked end and the lower end of the vertical portion being reduced in thickness to render the same flexible, resilient means interposed between the arms which extend into the hollow bar and the membe' tending to move the latter outwardly, and means to secure the lower reduced horizontally extending portion of said hook member in fixed position relatively to the tube frame, said reduced lower portion of the member being substantially the same width as the inner walls of the hollow bar to pre vent angular movement thereof in a horizontal plane.

12. In an Axminster tube frame comprising a hollow tubular bar having a bracket provided with parallel spaced arms which extend into and are secured to the bar, a hook member the upper end of which is substantially non-resilient and terminating with a hooked end and the lower end of said member being reduced in thickness to render the same resilient, a guide stud. carried by the tubular bar, yielding means on the stud interposed between the arms of the bracket and member tending to move the latter normally outwardly, and means to secure the lower reduced end of said hook member in fixed position relatively to the tube frame, a part of the said reduced end of the member being flared and having an opening therein to receive a portion of the guide stud.

13. In an Axminster tube frame comprising a hollow tubular bar having a bracket provided with horizontally spaced parallel arms which extend into and are secured to the bar, said bracket being further provided with an arm which extends vertically from the bracket, a hook member having a substantially rigid non-resilient upper portion terminating with a hooked end and the lower end thereof which is of reduced thickness to cause the lower end of the member to be resilient, said non-resilient part of the member being substantially parallel to the arm which extends vertically from the bracket.

l l. A hook member for an Axminster tube frame bracket, said member comprising an upper substantially rigid non-resilient portion terminating with a hooked end and having a lower resilient end, said resilient portion having a horizontal attaching extension.

In testimony whereof I have hereunto affixed my signature.

ALBERT A. GORDON.

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