US3010484A

US3010484A - Shuttle boxing device

Info

Publication number: US3010484A
Application number: US713594A
Authority: US
Inventors: Robert L Carroll
Original assignee: Individual
Current assignee: Individual
Priority date: 1958-02-06
Filing date: 1958-02-06
Publication date: 1961-11-28
Anticipated expiration: 1978-11-28

Description

Nov. 28, 1961 R. 1.. CARROLL 3,010,484

SHUTTLE BOXING DEVICE Filed Feb. 6, 1958 INVENTOR. Rosm'r L. CARROLL.

ATTORNEY United States Patent Ofiice 3,010,484 Patented Nov. 28, 1961 3,010,484 SHUTTLE BOXING DEVICE Robert L. Carroll, 408 Mci'ver St., Greenville, S.C., Filed Feb. 6, 1958, Ser. No. 713,594 2 Claims. (Cl. 139-185) This invention relates to an improved shuttle boxing device for looms.

Conventional looms are provided with a shuttle box adjacent each end of the lay for assisting the picker in checking the shuttle and properly positioning the shuttle prior to its return flight during weaving. The shuttle box serves to frictionally engage the shuttle prior to its engaging the picker, where further checking action of the shuttle takes place, and to positively position the shuttle prior to its being propelled by the picker on another flight across the lay.

A conventional shuttle box is formed by a front face which is parallel to the lay and a'pivoted spring biased binder which is so spaced that as the shuttle enters the box the shuttle strikes the free end of the binder urging it laterally away from the shuttle. The violent striking action of the shuttle causes the binder to be displaced laterally an excessive amount so that upon its return to engage the shuttle a very strong spring pressure must be employed so as to sufficiently check the shuttle before the shuttle is received by the picker. This further results in a chattering action of the shuttle upon entry into the box as well as uneven wearing of the binder leather. The relatively heavy binder springs require more power to drive the shuttle out of the box on the return flight than should be required occasioning strain on all of the loom parts associated with the checking and the propelling of the shuttle and limits the speed at which the loom may be operated.

Accordingly, it is an object of this invention to provide an improved shuttle boxing device so that upon the initial entrance of the shuttle into the box area the shuttle will be engaged in rolling contact with the binder so as to minimize the lateral displacement of the forward end of the binder.

Another object of this invention is the provision of a shuttle boxing device in which the shuttle is resiliently engaged upon its entry into the box area so as to occa sion a minimum of lateral displacement of the binder and exert a checking action upon the shuttle immediately upon its entry into the box.

Another object of the invention is the provision of an improved boxing device which will minimize the chattering action of the shuttle upon its entry into the shuttle box.

A further object of this invention is the provision of a shuttle boxing device in which a rolling contact will be provided between the shuttle and the binder upon the entry of the shuttle into the box so as to minimize wear upon the binder leather at the place where the shuttle strikes upon entry.

A still further object of this invention is the provision of a boxing device which will allow greater loom speeds due to the reduction in strain on the parts associated with the checking of the shuttle and the eliminating of the chattering action of the shuttle upon its entry into the shuttle box.

Another object of the invention is the provision of an improved boxing device which will minimize maintenance upon the parts of the loom which are associated with the checking operation.

A further object of the invention is the provision of a boxing device which will minimize the friction exerted upon the shuttle at the beginning of a power stroke of the picker so as to reduce loom power and improve the efficiency of the lcorn.

Some of the methods provided to carry out the invention will be hereinafter described.

The invention will be more readily understood from a reading of the following description and by reference to the accompanying drawings forming a part thereof wherein some illustrative examples of the invention are shown, and wherein:

FIGURE 1 is a plan view of a shuttle boxing device constructed in accordance with the present invention showing a shuttle in position to be propelled on a return flight across the lay of a loom,

FIGURE 2 is a perspective view of the shuttle binder shown in FIGURE 1 looking from the front left hand portion of FIGURE 1,

FIGURE 3 is an enlarged front elevational view of the right hand portion of the shuttle binder shown in FIGURE 2, and

FIGURE 4 is a longitudinal sectional View taken along the line 4-4 in FIGURE 3.

Referring more particularly to the drawing, the improved boxing device is shown consisting essentially of a pivoted spring biased binder A, a front face B, and a vertically disposed cylindrical resilient element C rotatably carried by the binder adjacent the portion of the binder where entry of the shuttle into the boxing device takes place. Referring to FIGURE 1, a shuttle D is shown in solid lines as being in position for a return flight across the lay of the loom E. The shuttle D is also shown in dotted lines in position immediately following its entry into the box area in engagement with the resilient cylindrical element C which is displaced laterally due to the impact of the shuttle upon its entry into the boxing area. Upon entry of the shuttle D into the boxing area the shuttle D is engaged resiliently by the element C in rolling contact to minimize the lateral displacement of the forward end of the binder A. This rolling contact between the shuttle D and the resilient rotatable element C occurs at the initial entry of the shuttle into the box and such contact terminates prior to the frictional engagement of the shuttle by the binder leather. Such frictional engagement of the shuttle occurs considerably earlier in the present boxing device than with conventional boxing devices because of the early return of the binder since the displacement of the binder is minimized. A more detailed description of the preferred embodiment of the invention shown in the drawing and its operation follows.

The shuttle binder A is pivoted adjacent one end thereof on the pin 10 which has connection with the lay E adjacent the end thereof. The binder A is provided with a bushing 11 which is pressed therein so as to provide a bearing surface for the pin 10. A leaf spring 12, which may be of lighter construction than the usual binder spring, is fixed to the lay E as by the bolts .13 and 14 on one end adjacent the pivot pin 10 so that the spring exerts an inward pressure against the free end of the binder by pressing against the binder A adjacent the free end thereof. The inward movement of the free end of the binder A is limited by the stop element 15 which has connection with the lay E. Means is provided for limiting the outward movement of the binder, if necessary, by the conventional leather pad 15a and the stop element 1511 which is threadably carried as at by the arm 15d for adjustment thereof so that the stop element 15b may yield, if necessary, upon contact by the binder A during boxing. The arm 150! has resilient connection (not shown) with the lay E. The

bolts

13 and 14 which are employed to adjustably position the binder spring 12 may be provided with means (not shown) for adjusting 3 the pressure exerted by the binder spring upon the binder. The usual binder leather 16 extends almost the entire length of the inside face of the binder A.

The rotatable element C is mounted upon a vertically disposed shaft 17 which is positioned within a cavity or cut of portion 18 as by a pressed fit into the binder material to accommodate the element C. The cavity 18 preferably extends through the binder A so as to avoid the accumulation of lint therein. A bushing 19 is rotatably mounted on the vertically disposed shaft 17 and is shown provided with a splined periphery 19a. A covering of resilient material 20 is shown in the form of rubber surrounding the bushing and accommodated within the cut out portion 18. The resilient material 20 should be a heavy rubber-like material having good wearing qualities and capable of withstanding repeated impact. The bushing 19 has portions 19b which project above and below the covering to insure free turning of the rotatable element C within the cut out portion 18. The rotatable element C is preferably cylindrical in shape and constructed of resilient material as is shown in the drawing. Any suitable means for rotatably mounting the element C could be provided in lieu of the arrangement shown in the drawing.

The front face B is of standard construction and is suitably fastened to the lay E as by bolts 21. The front face may be provided with the usual leather 22 covering its inside face and the leather covering 22 is shown secured to the front face as by screws 23. During weaving as the shuttle D enters the shuttle box the forward curved entering end of the back face 24 of the shuttle D normally strikes the enlarged curved portion of rise 25 of the binder A before fully entering the box and engaging the picker 26. It will be noted that the rotatable element C is so positioned that a portion of the'periphery of the element C which is indicated at 27 projects inwardly beyond the binder leather 16 so as to make rolling contact with the shuttle beginning along the curved portion 24 of the shuttle D. The shuttle D and the various parts of the boxing device are shown in dotted line position just after entering the box. At the point where the entering end of the back face of the shuttle 24 passes over the rise 25 of the binder, the roller or cylindrical element C is disengaged from the shuttle in its further entrance into the box to insure a maximum of frictional engagement of the shuttle by the binder A along its length.

In conventional shuttle boxes the binder and the front face are in substantially parallel relationship but normally the binder is inwardly biased by the binder spring so as r to make the opening into the shuttle box smaller than C with the shuttle D further minimizes the lateral displacement of the shuttle binder upon entry of the shuttle into the box.

The effectiveness of the improved binder is greatly enhanced due to the fact that a lighter binder spring returns the binder to engage the shuttle sooner than was heretofore possible even with the relatively heavy binder spring so as to frictionally engage the shuttle sooner in its flight thus minimizing the chattering action of the shuttle as it enters the box. Thus loom power may be reduced and the speed of the loom increased during weaving. The use of the rotatable element C also prevents the binder leather from becoming worn at its normal point of contact with the shuttle thus greatly enhancing the wearing characteristics of the binder leather since it is this point that becomes worn out long before the remaining portion of the leather.

The foregoing disclosure and description of the invention is illustrative and explanatory thereof and changes and variations will occur to those skilled in the art which may be made within the scope of the appended claims without departing from the spirit of the invention.

What is claimed is:

1. In a spring biased shuttle binder for a shuttle box, the improvement including, a cut out portion Within said binder adjacent the forward end of the binder where initial contact by the shuttle takes place, a vertically disposed shaft carried within said out out portion, a resilient element of circular cross-section rotatably carried by said shaft, a portion of said element projecting inwardly of said cut out portion so that said element initially engages the shuttle in rolling contact as the shuttle enters the box and is out of engagement with the shuttle after the shuttle has entered the box.

2. An improved spring biased shuttle binder for a shuttle box including, a cut out portion within said binder adjacent the end of the binder where initial contact by the shuttle takes place, a vertically disposed shaft carried within said cut out portion, antifriction means mounted on said shaft, a resilient material covering said bushing to form a resilient element of circular cross-section ro tatably carried by said shaft, a portion of said element projecting inwardly of said out out portion so that said element initially engages the shuttle in rolling contact as the shuttle enters the box and is out of engagement with the shuttle after the shuttle has entered the box.

References Cited in the file of this patent UNITED STATES PATENTS