US2914095A - Cop bobbin and cop grip holder for a weaver's shuttle - Google Patents

Description

Nov. 24, 1959 H. 'r. SIMMONS 2,914,095

COP BOBBIN AND COP GRIP I-IOLDER FOR A WEAVERS SHUTTLE Filed Oct. 7, 1955 2 Sheets-Sheet 1 I2 12 lb INVENTOR.

His/way T SiMMcNs Nov. 24, 1959 H. T. SIMMONS 2,914,095

COP BOBBIN AND COP GRIP HOLDER FOR A WEAVERS SHUTTLE Filed Oct. 7, 1955 2 Sheets-Sheet 2 IN V EN TOR.

HENRY T SIM-MOMS 3/ F1 77. BY W W of the shuttle.

COP BOBBIN AND COP GRIP HOLDER FOR A WEAVERS SHUTTLE enry T. Simmons, Skaneateles, N.Y.

Application October 7, 1955, Serial No. 539,106

3 Claims. (Cl. 139-198) This invention relates to a cop bobbin and a cop grip holder which is a great improvement over the way, now in'use, of holding a cop in place in a shuttle dispensing the yarn from the inside of a cop.

It has been customary heretofore to place a cop in the cavity of a shuttle forcing the wound yarn of the cop to fit into the grooves in the cavity of the shuttle. This is not'a very successful means of holding the cop in place in the shuttle. It also produces problems such as slugging, breakage and a great deal of waste. Due to this manner of holding the cop is not substantially efficient. These cops are not structurally capable of withstanding the strain caused by the speed of the shuttles as they pass over the length of the fabric on the weaving machines. This speed proves destructful to the yarns, whether they be fine or course, because of the lack of tension control on the cop as the yarn is being unwound and also the lack of a proper hold on the cop in the shuttle. This speed has a tendency to snap the yarn as it is being unwound from the inside of the cop while in the process of weaving. Also, in the present cops, it is necessary to unwind the yarn from the inside rear of the cop; this being done, the yarn tends to snarl and snap at the eye This presents numerous problems to the weaver; one being that the weaver must then remove the snarled cop and replace it with a new one.

My invention improves these conditions because of its novel construction which eliminates yarn waste and also slugging and breakage.

Particularly, my invention allows one to freely, and without any difficulty, unwind the yarn from the outside front of the cop bobbin due to its structure, instead of to them. The change from the cop bobbin now in use to my novel type would be a simple operation.

In accordance with the present invention, a weavers shuttle is provided comprising a bobbin cavity, and means for retaining the cop grip holder in the shuttle. The weavers shuttle is also provided with an eye located in the front portion, which guides the yarn when it is unwound from the outside front of a cop bobbin which is inserted into the cop grip holder through a rear opening and locks 0 in place in the cop grip head. This cop grip holder has from the inside rear as is now being done. This prevents i any strain on one particular place on the cop of yarn and also any entanglement of the yarn.

Another advantage of this invention is the fact that the metal cop bobbin is attached to a grooved wooden insert ;manner in which the cop-bobbin is held in the cop grip holder. This saves a great deal of time spent on rethreading the yarn in the eye of the shuttle, and also eliminates expensive waste.

The cop grip holder acts as a tension control on the yarn of the bobbin and also as a casing which, when placed in'the cavity of the shuttle, equalizes the pressure on the yarn located on the cop bobbin as the shuttle is "passed at high speed on the loom.

Furthermore, it is not necessary to change the style of the shuttle presently used in the mills throughout the :WOIld, because the present invention accommodates itself a flap which closes to hold fast the cop bobbin with the yarn thereon and also controls the tension on the yarn located on the cop bobbin. This is done by distributing equal pressure throughout the length of the cop of yarn. This entire cop grip holder, along with the cop bobbin is placed in the bobbin cavity of the shuttle, so that the cop grip head of the cop bobbin which is grooved, fits on the yoke provided in the shuttle, thus automatically locking itself in place. The stops at the front of the shuttle of the bobbin cavity act as means for placing the cop grip holder easily in place. A view hole is provided for in the cop grip holder to allow one to see the amount of yarn on the cop bobbin without having to remove the cop bobbin from the cop grip holder which is inserted in the weavers shuttle. v

This invention consists of the features of construction, combination and arrangement of parts herein fully described and claimed, with reference to the accompanying drawings in which:

Figure 1 is a side elevation of a cop bobbin illustrating the novel construction thereof.

Figure 2 is a side elevation of a cop grip holder show-' ing the means for closing and opening the cop grip holder for placing a cop therein.

Figure 3 is a top view of a shuttle illustrating the placement of the yoke and the stops located in the bobbin cavity of the shuttle.

Figure 4 is a front elevation of a cop grip head removed from the cop grip holder, and illustrating the action of the spring lock.

Figure 5 is a front elevation of the cop grip facing removed from the cop grip holder.

Figure 6 is an end view of the cop grip holder taken on line 6-6 of Figure 2, and showing the cop grip holder in the open position for receiving a cop.

Figure 7 is an end view as in Figure 6 showing the cop grip holder in the closed position, as after receiving a cop of yarn therein.

Figure 1 illustrates a wooden cop bobbin insert plug 16, conical in shape. Concentric grooves 15 are formed into the bobbin insert 16, which act as a basis to aid in retaining the yarn which is wound on the plug 16 of the bobbin, represented as a whole by thenumeral 17. A metal cop bobbin head 10 is illustrated fastened to the wooden insert 16 by screws 12 in the shoulders 13 thereof. The head 10 is provided with grooves 11 on either side thereof which are means for locking the cop bobbin in place in the cop grip holder, which will be described. A square hole 18 is provided in the interior of the bobbin for the placing of a spindle at 14 for winding the cop on the bobbin 17. This is convention and will not be described further.

With reference to Figure 2, a cop grip holder is illustrated as having at its back end and fastened thereto, a cop bobbin grip facing 24, spring lock 25 and cop bobbin grip head 20. The cop bobbin grip head 26 and spring lock 25 are fastened to the cop bobbin grip facing 24 by inserted metal guide pins 21 and screw 22. The cop bobbin grip facing 24 is fastened to the cop bobbin grip holder 30 by screws 27. The associated structurelforholding the cop bobbin in the cop bobbin grip holder is designated by the numeral 50. With reference to the cop bobbin 17.

Figures 2 and 6, the remainder of the cop bobbin grip holder is a substantially tubular metal casing having a portion 30A adapted to overlap part of the body of the holder 30. A toggle-like flap 29 is hingedly disposed on hinge pins 28, of conventional type, and has hinge pins 28A disposed through cut-out openings therein. Connecting members 29A are hingedly fastened to the hinge pins 28A and to the end of portion 30A, so that as flap 29 is folded over the body of the holder 30, connecting members 29A draw portion 30A over the body in overlapping relationship, at the same time tightening the body of the holder 30 around a cop of yarn placed therein by reducing the diameter of the body slightly. This serves to exert pressure on the cop and therefore to prevent the cop from separating in the holder.

It is well known that, as the shuttle travels to one side of the loom, the picker stick strikes the shuttle a hard blow, thus driving the shuttle back across the loom at high speed. This blow received by the shuttle from the picker stick at either side of the loom renders a relatively high impact through the shuttle, and the change of direction of travel of the shuttle is extremely abruptinstantaneous. For this reason, the cop in the cop grip holder has heretofore been known to break up frequently, thus causing a time delay in the weaving operation, and a waste of yarn. The broken portion of the cop will be driven forward in the shuttle where it will jam against the tension brush or the yarn eye and interrupt the free action of the weft.

A second spring lock 33 is disposed between the cop grip facing 24 and the back portion 51 thereof, which portion 51 is fastened to the body of the cop grip holder 30, preferably by screws.

The second spring lock 33, Figure 5, has a flat circular metal body, the body of the facing 24, which is fastened in the assembly by pins 21 and screws 22. A concentric inner opening 38 is disposed substantially in the center of the facing 24. Spring lock 33, consisting of two -members, substantially identical, is slidably disposed in openings in the facing body, and the members are maintained in spaced relationship with each other by guide pins 35 having springs 34 disposed therearound, the pins being disposed in openings 64. Screws 37 through the body of the facing 24 are disposed in slots 36 in the lock members 33 and act as guides for the sliding action of the lock.

When the cop bobbin with the yarn in the form of a cop thereon, all designated by the numeral 17 is placed in the front opening 32 of the cop grip holder 30, the ,head of the bobbin 17 protrudes through the central opening 38 of the cop grip facing 24, and the grooves 11 come into alignment with the inner edges 70 of the .spring lock 33. When the cop grip holder 30 is placed .in the cavity 42 of the shuttle 39, the spring lock members 33 are held inwardly by way of the outer ends being forced against the inside of the yoke structure 40, thus maintaining the inner edges 70 within the grooves 11 of In this way the bobbin 17 is held within the cop grip holder 30.

Spring lock 25 comprises two members pivotally attached at the bottom of the assembly by the screw 22,

Figure 4. The upper ends of the two members protrude above the assembly and act as handles 19. A bowed spring 23 is disposed between the two members, forcing them outwardly away from each other, and the outward travel of the two members is limited by the placement of the metal pins 21. The whole spring lock 25 is fastened to the cop grip headltl, which has an opening 26 therethrough. The two projecting shoulders at the sides of the spring lock 25 fit into the yoke 40 of the shuttle 39 for retaining the cop grip holder 30 in place therein.

T he yoke 40 is a conventional plate having a U-shaped opening therein adapted to receive. the cop grip head 20, the edges of the yoke 40 being adapted by reason of their dimension to grip the spring lock or otherwise engage the spring lock for holding the cop grip holder 30 in place.

A cop of yarn is wound on the bobbin 17. The bobbin is placed through the front opening 32 of the cop grip holder 30, with the flap 29 in the position of Figure 6 so that the holder 30 is open. With the cop bobbin 17 all the way in the holder, the grooves 11 in head 10 are in alignmentwitkthe inner edges 70 of spring lock 33. The operator temporarily Icompresses spring lock 33 to retain the bobbin head 10 in position, then the operator closes flap 29 into the position in Figure 7. This exerts pressure on the cop of yarn, maintaining it in position. The cop grip holder 30 is then placed in the cavity 42 of shuttle 39, so that the lugs or stops 31 on holder 30 bear against stops 41 in the shuttle, thus aligning holder 30 in the correct position. The cop grip head 20 and spring lock 25 at the back of the holder 30 fit into yoke 41) at the back of the shuttle. Yoke {it} engages the spring lock 25 to retain the holder 30 securely within the cavity 42 of the shuttle 39. The weft is unwound from the outside front, or conical shaped end, of the cop, through the front opening 32 of the holder 30, and out through the front end of shuttle 39, passing through the eye of the front end of the shuttle. The cop bobbin 17 is maintained within the holder 30 by the spring lock 33 being compressed by the inside walls of the shuttle 39, so that the two members of the spring lock 33 have their inner edges 70 disposed within the grooves 11 of the head 10.

It is therefore seen that the tightly closed grip holder 30 maintains a pressure around the cop of yarn and throughout the length thereof. This pressure on the cop prevents the cop from breaking up as hereinbefore described. In the old manner, the yarn was unwound from the inside back of the cop. This method affords little control on the tension of the holder on the cop, allowing the cop either to break up, or allowing portions of the cop to collapse and form slugs of yarn which jam in the yarn eye and break the weft.

Since in the present invention, the yarn is unwound from the outside front, or conical end, of the cop, better control is afforded against slugging. Better tension control of the weft is also afforded, due to the pressure of the holder on the cop of yarn. It will become obvious that, with the Weft being taken from the conical end of the cop, or outside front, slugging is virtually eliminated; and the yarn is unwound evenly from the cop as the shuttie travels through the loom. The condition whereby the cop had the tendency to collapse, in part, as the yarn became nearly unwound cannot occur with the present method, as the yarn is unwound from the outside of the cop.

An embodiment of the specific structure having been disclosed for the purpose of illustration only, it is to be understood that departures may be made from time to time which do not depart from the spirit and scope of the appended claims.

I claim:

1 A wcavers shuttle and a cop grip holder, in combination, for a weaving machine, said Weavers shuttle and cop grip holder receiving and interlocking an inserted cop bobbin having yarn wound thereon, said weavers shuttle comprising a cavity for receiving said cop grip holder, stops located in the front portion of said cavity, a yoke suitably fastened at the rear portion of said cavity for interlocking said cop grip holder, and an eye located in the front portion for guiding yarn as it is unwound from the outside front of said cop bobbin; said cop grip holder comprising a tube having an open end for receiving said cop bobbin, means at the back end of said cop grip holder for interlocking said cop bobbin in la fixed relation with respect to said cop grip holder, said means comprising a spring lock received in ,a' lo:king position when placed on said yoke, holding said inserted cop bobbin in a fixed position, a second means located at the back portion of said cop grip holder for locking said cop grip holder in a fixed position when placed in said weavers shuttle, said second means comprising a second spring lock engaging said cavity in a locking position holding said cop grip holder in a fixed position, a flap extending longitudinally and suitably attached to the outside portion of said tube, said flap, when in a closed position, forming means for equally distributing pressure on said cop bobbin and for reducing strain on any one particular place on the yarn, as it is unwound from the outside front of said cop bobbin; said cop bobbin comprising a cop head having grooves for interlocking with said yoke and said first spring lock, said cop head fastened at shoulders, forming a portion thereof, to a grooved insert plug, said grooved insert plug forming means on which yarn is wound and unwound, a square opening in said cop head and longitudinally located throughout said grooved insert plug, and the above said means for guiding and unwinding the yarn from the outside front of said cop bobbin when inserted in said cop grip holder located in said Weavers shuttle.

27 A cop grip holder for a weavers shuttle for receiving a cop bobbin having a cop of yarn thereon, comprising in combination, a tube having an open end for receiving said cop bobbin, locking means for interlocking said cop bobbin in a fixed relation with respect to said tube, a flap extending longitudinally and suitably attached to the outside portion of said tube, said flap, when in a closed position around said cop of yarn, forming means for equally distributing pressure on said cop for reducing slugging of said yarn, and for preventing said cop from breaking during operation of the shuttle as the yarn is unwound from the outside front of the cop.

3. A cop bobbin for a cop grip holder and a weavers shuttle comprising a cop bobbin grip head having grooves for interlocking with means provided in said cop grip holder when said cop grip holder with said cop bobbin grip head therein is inserted in said shuttle, said cop bobbin grip head being fastened at the shoulders forming a part thereof, to an insert plug having an opening therethrough, and the combination of all of the above forming means for unwinding yarn, wound on said insert plug, from the outside front of the cop.

References Cited in the file of this patent UNITED STATES PATENTS 45,682 Tunstill Dec. 27, 1864 444,095 Emery Jan. 6, 1891 454,797 Draper June 23, 1891 875,890 Brandt Jan. 7, 1908 FOREIGN PATENTS 20,421 Austria June 10, 1905 260,686 Italy Oct. 9, 1928

Images