US2898946A - Shuttle binder - Google Patents

Description

Aug. 11, 1959 J. M. BUDZYNA A I SHUTTLE BINDER 2 Sheets-Sheet 1 Filed Oct. 12, 1955 h n m u m IN V-EN TOR. JOSEPH M. BUDZYNA BY %f VZ /M% ATTORNEY g- 11, 1959 J. M. BUDZY NAI 2,898,946

SHUTTLE'BINDER Filed 001;. 12, 1955 v 2 Sheets-Sheet 2 fig- INVENTOR. JOSEPH M. BuozYNA A TTORNE Y SHUTTLE BINDER Joseph Budzyna, East Douglas, Mass., assignor -to Draper Corporation, Hopedale, Mass., a corporation of Maine Application October 12, 1955, Serial No. 540,110

8 Claims. (Cl.'139-186) This invention relates to improvements in shuttle binders for weaving looms.

It is a general object of the invention to improve the operation of the shuttle checking means of a loom especially to increase its precision of operation and efliciency at high speeds.

It is a more specific object to devise a binder which shall serve to absorb the energy of the shuttle and arrest it in fully boxed position, and with which the entire surface of the binder shall affect a more equally proportionate part of the retarding function.

It is a further object to devise a binder which may be adjusted to widely varying sizes of shuttles and to different speeds and conditions of loom operation.

Other objects will become apparent from the following disclosure.

In fly shuttle looms the shuttle propelled to and fro across the lay of the loom is arrested at the end of each flight as it enters a shuttle box by plural means which dissipate its residual kinetic energy, the major one of which is called a shuttle check or binder. These means all depend upon friction and, of course, are not entirely constant for all conditions. For example, changes in temperature of the parts, moisture and other factors influence their efiect and further, variations are introduced by the picking means which may not impart to the shuttle exactly the same initial velocity at each pick as well as the fact the mass of the shuttle, bobbin and filling change noticeably from full to empty condition. At higher speeds these factors become more difficult to control or, at least, their effect becomes more noticeable causing the shuttle to box less precisely with the attendant end results so well known to those skilled in the art.

Shuttle binders (sometimes referred to as checks) usually comprise a movable member pivoted or otherwise restrained for limited movement within one or the other of :the box plates of a shuttle box. These are spring urged inwardly and are generally faced with leather or other frictional material against which the shuttle slides as it enters the box.

According to the instant invention, a binder is so mounted for pivotal movement and is so adjustable that it will present to an entering shuttle a frictional, motion retarding surface Which is maintained in a position to resist the entry of the shuttle into the box more effectively than heretofore. A binder faced with suitable material is pivoted on a lever having two arms, one of which constitutes a pivot at about the outer third of the binder and the other arm of which carries adjustable stop means. This lever is pivoted on the rigid box structure intermediate its ends and its pivot is adjustable laterally of the box. A spring in addition to the usual protector rod finger tends to urge the inner, free end of the binder in toward the shuttle and other spring means bears against the outer end of the lever to maintain that end of the binder outwardly in contact with its stop.

The invention and its mode of operation will be more A ate 1 ice fully described in the following, more detailed disclosure and by reference to the figures of drawing, in which:

Fig. 1 is a plan view of a lay end-shuttle box assembly to which the invention has been applied;

Fig. 2 is a rear elevation of the mechanism of Fig. 1;

Fig. 3 is a view similar to Fig. 1, but with the .rear box plate removed;

Fig. 4 is an end view of Figs. 1 or 2, and

Fig. 5 is a sectional view showing details of the lever pivot.

Now referring to Figs. 1 and 2, only enough of a conventional, fly shuttle loom has been shown to illustrate the invention and the manner in which it is applied. These parts of a loom comprise a lay end attached to a lay beam carried by swords one of which is shown at 11, the lay end including front box plate 12 and rear box plate 13. These are fixed to the lay end and beam by suitable screws or bolts and the front plate is preferably faced with leather in the usual way. A shuttle 14 carr-ies a filling supply on bobbin 15 as usual and is picked from the box to the opposite side of the lay by picking means acting through picker stick 16 and picker 17.

A check strap 18 threaded through fingers 19 on bracket 20 performs the usual function of checking the stick on its picking and return strokes.

Normally the rear box plate has pivoted adjacent its outer end a binder faced with leather or other friction material and its pivot, though adjustable, is when once set, a relatively fixed point about which the binder may swing. According to the invention here, a binder is pivoted, not at a single point, but rather on an arm of a lever which is itself pivoted to swing limitedly. The binder is then spring pressed at its inner or relatively free end to position to check the shuttle rather severely as it enters the box, but the multiple or compound pivot system acts at that time in conjunction with the entering shuttle, to interpose the outer or heel end of the binder in the path of the shuttle so that a very appreciable amount of the shuttles energy may be absorbed during the last part of its travel or after its speed has been initially reduced.

Physically this mechanism is embodied as a binder 21 of wood or other material faced with friction material 22, e.g., leather. The rear box plate assembly includes a top rail 23 flared at 24 to act as a shuttle restraining guide. This rail is attached by suitable connecting means 25 and other bracket connections to plate 26 at itsv inner end while it is further formed with a curved extension 27 which is fixed to the plate 26 by a bolt 28 and spacer sleeve 29. Actually, this bolt at its lower end passes through an extension 30 from the plate 26.

This bolt and sleeve which is eccentric to the belt for purposes of adjustment, serve as a pivot for a lever having arms 31 and 32. The first is curved as shown and has a pin 33 fixed in its end which depends into a corresponding hole in the binder. The top of the binder is also recessed to a depth about the thickness of the arm end.

The arms 31 and 32 extend, one at either side of a hub 34 which is oscillatable on the sleeve 29, and arm 32 shaped as in Figs. 2 and 5, has threaded therethrough a stop screw or abutment 35 with looking nut 36. A rounded head of the screw strikes against the outer end of the binder for a purpose later to be described.

The sleeve 29 has a flange 37 at its lower end upon which the hub of the lever is carried and which is drilled at spaced points or otherwise so formed that the sleeve may be rotated when the bolt 28 is loosened, thereby to adjust the position of the pivot laterally of the shuttle box.

Bracket 20, Figs. 2 and 4, extends upwardly at 38 to mount two springs. A multi-leaf spring 39 presses against the binder near its inner end and, in conjunction with the finger 40 and other protector rod parts, affects the 3 binder at that end to cause it to assume a position in the shuttle pathway and to resist its entry and progress into the box.

Another spring 41 bears lightly against a depending part of the arm 32 to prevent the outer end of the binder from moving too far laterally as will be explained in describing the operation of the parts.

These springs are fixed to bracket 38 by screws 42 and 43. A rib 44 between the screws makes possible adjustment of spring tension as they may be independently flexed about the rib to apply more or less pressure.

The arm 31 may be varied by increasing or decreasing its length and in that event, its pivot 33 will be located at diiferent distances from the ends of the binder. Such possibilities are shown in dot-and-dash lines, Fig. 3. This provision is made to take care of shuttles of dilferent lengths and also makes it possible to apportion the amounts of shuttle retardation to be eflected by the inner and outer parts of the binder. For example, as the arm is lengthened the outer binder end moves inwardly later upon entry of the shuttle into the box and as the arm is shortened, the outer end of the binder swings laterally inwardly and also slightly outwardly lengthwise of the lay more quickly. In the latter case the outer part of the binder will do more of the work in absorbing the shuttle energy.

In action, the parts being set as in Fig. 3, for example, the inner end of the binder would be resiliently held inwardly of the box by spring 39 and protector rod finger 40. It is also freely pivoted at 33 and arm 31 is free to pivot at sleeve 29, spring 41 acting at the time to hold the arm 32 inwardly with stop screw or abutment 35 more or less in contact with the binder end. It is to be noted that arm 32 is considerably shorter than arm 31 and spring 41 has only about enough strength to hold that end of the lever inwardly and the binder laterally outwardly except as hereinafter described.

As the shuttle enters the box its tapered side strikes the rounded, inner binder surface first and two components of the force act, one to force that end laterally outwardly of the box against the etfect of spring 39 and finger 40, the other to move the whole binder more or less longitudinally of the box toward the end of the lay. This latter action can result only in a swinging of the arm 31 about sleeve 29 and, of course, pivot 33 and the outer binder end move laterally inwardly, the end moving away from stop screw 35 since spring 41 has insuflicient force to resist very effectively the tendency of arm 31 to be swung on sleeve 29.

The shuttle moving at a high velocity is checked some upon initial contact with the binder and as it progresses into the box must wedge the binder outwardly. That motion swings arm 31 on sleeve 29 while pivot 33 swings both laterally outwardly of the box and has a slight component along the lay in direction opposite that in which the shuttle moves. The result is that instead of a situation where the major shuttle retarding influence takes place at the early part of its engagement with the binder, here the retardation continues more or less uniformly from one end to the other of the binder.

By varying the length of arm 31, spring pressures and the eccentric sleeve 29, the amount of energy absorbed at the initial and terminal ends of the binder, that is, the curve of energy absorption as the shuttle progresses into the box, may be varied to obtain a very satisfactory condition and to work the entire surface of the binder engaged by the shuttle. This is especially effective in looms operating at high speeds and with larger shuttles and, of course, heavier filling supplies.

While one end only of the loom has been illustrated and described, it is to be understood that a substantial duplication of parts is to be found at the opposite end and it would thus serve no useful purpose to show both.

The adjustment of parts is easily effected since both springs are separately tensioned and the eccentric bush- 4 ing and abutment screw 35 may be very nicely set. Gauges may be used and practical shuttle checking observed in eifecting a practical adjustment for a specific condition.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive concept may be carried out in a number of ways. This invention, therefore, not to be limited to the precise details described, but is intended to embrace all variations and modifications thereof falling within the spirit of the invention and the scope of the claims.

I claim:

1. For a loom having a lay, a shuttle and a shuttle box including front and rear box plates, a shuttle retarding means which comprises a shuttle binder, a pivot at one of said box plates, and means for positioning said binder for receiving and retarding the shuttle as it enters the box comprising a lever hinged intermediate its ends at said pivot and having a curved arm the end of which is pivoted to said binder, and an oppositely directed arm carrying an abutment directly engaging the outer end of said binder for limiting movement of the binder outwardly laterally of the box.

2. For a loom having a lay, a shuttle and a shuttle box including front and rear box plates, a shuttle retarding means which comprises a shuttle binder, a pivot at one of said box plates, and means for positioning said binder for receiving and retarding the shuttle as it enters the box comprising a lever hinged intermediate its ends at said pivot and having a curved arm the end of which is pivoted to said binder, and an oppositely directed arm carrying an abutment directly engaging the outer end of said binder for limiting movement of the binder outwardly laterally of the box, and resilient means for urging the lever in a direction about its pivot to maintain the outer end of the binder in an outermost position laterally of the box.

3. For a loom having a lay, a shuttle and a shuttle box including front and rear box plates, a shuttle retarding means which comprises a shuttle binder, a pivot at one of said box plates, and means for positioning said binder for receiving and retarding the shuttle as it enters the box comprising a lever hinged intermediate its ends at said pivot and having a curved arm the end of which is pivoted to said binder, and an oppositely directed arm carrying an abutment for limiting movement of the binder outwardly laterally of the box, and spring means, one of which urges the innermost end of the binder inwardly of the box to interpose it in the path of an entering shuttle and a second of which acts upon said lever to urge it in a direction to maintain the outer end of the binder in its outermost position laterally of the box.

4. For a loom having a lay, a shuttle and a shuttle box including front and rear box plates, a shuttle retarding means which comprises a shuttle binder extending substantially the length of the shuttle box, a pivot at one of said box plates, and means for positioning said binder for receiving and retarding the shuttle as it enters the box comprising a lever hinged intermediate its ends at said pivot, said lever having an arm directed inwardly of the loom and so angled that an end of the binder pivoted at the free end of said arm and at a pivot adjacent the outer end of the binder, when swung inwardly of the box will have a slight component of motion longitudinally outwardly of the lay, and a second arm for said lever and adjustable stop means carried thereby and directly engaged by the outer end of the binder to limit its lateral opening at and adjacent the outer end.

5. For a loom having a lay, a shuttle and a shuttle box including front and rear box plates, a shuttle retarding means which comprises a shuttle binder, a pivot at one of said box plates, and means for positioning said binder for receiving and retarding the shuttle as it enters the box comprising a lever hinged intermediate its ends at said pivot, said lever having an arm directed inwardly of the loom and so angled that an end of the binder pivoted at the free end of said arm when swung inwardly of the box will have a slight component of motion longitudinally outwardly of the lay, a second arm for said lever, adjustable stop means carried thereby and engaged by the outer end of the binder to limit its lateral opening at and adjacent the outer end, spring means to urge the inner end of said binder into the path of an entering shuttle, and a second spring for maintaining the outer end of the binder in engagement with said stop means, said second spring being relatively weak thereby to permit the outer portion of the binder to move laterally inwardly upon initial engagement of a shuttle with the binder.

6. For a loom having a lay, a shuttle and a shuttle box including front and rear box plates, a shuttle retarding means which comprises a shuttle binder extending substantially the length of the shuttle box, a pivot at one of said box plates, and means for positioning said binder for receiving and retarding the shuttle as it enters the box comprising a lever having a hub, one arm of said lever extending inwardly of the lay and having a pivot at its free end to which said binder is freely pivoted at a point adjacent its outer end, a second arm extending in the opposite direction and, a stop screw threaded through said second arm and having a head directly engaged by and limiting movement of the outer end of the binder laterally of the shuttle box.

7. For a loom having a lay, a shuttle and a shuttle box including front and rear box plates, a shuttle retarding means which comprises a shuttle binder, a pivot at one of said box plates, and means for positioning said binder for receiving and retarding the shuttle as it enters the box comprising a lever having a hub, one arm of said lever extending inwardly of the lay and having a pivot at its free end to which said binder is freely pivoted, a second arm extending in the opposite direction, a stop screw threaded through said second arm and having a head limiting movement of the outer end of the binder laterally of the shuttle box, a relatively strong spring urging the inner end of the binder into a position to engage and check an entering shuttle, and a weaker spring biasing the outer or second arm of the lever to a position to hold that end of the binder open or outwardly laterally of the box.

8. Mechanism as defined in claim 7 wherein the pivot for the lever comprises an eccentric sleeve adjustable to vary the pivot position laterally of the shuttle box.

References Cited in the file of this patent UNITED STATES PATENTS 1,068,823 Ryon July 29, 1913 1,487,093 Draper Mar. 18, 1924 2,341,843 Hamilton Feb. 15, 1944 2,351,189 Brown June 13, 1944 2,763,295 Bostic Sept. 18, 1956

Images