US1224806A - Automatically-threading loom-shuttle. - Google Patents

Description

E. S. STIMPSON. AUTOMATICALLY THREADING LOOM SHUTTLE. APPLICATIGNIILED JULY I. I916.

1, 2% 8@6@ Patented M 1917.

2 SHEETS HEE I.

Witne oo E. S. STIMPSON.

AUTOMAHCALLY THBEADi NG LOOM SHUTTLE.

APPLICATION FILED JULY 1. I916.

Patent-ed May 1, 1917.

2 SHEETQH-SHE'ET 2.

LSQQSGQ.

EDWARD S. STIMPSON, GE HOJPEDALE, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- NTS, TO DRAPER (30R?QRA'JlIClIhT, OF PORTLAND, MAINE, A CORPQRATIQN 0F AUTOMATICALLY-THREADING LOOK-SHUTTLE.

Patented May 11., igfit.

Application filed July 1, 1916. Serial No. 107,1a6.

To all whom itmag concern:

Be it known that I, EDWARD S. S'rlMrsoN, of Hopedale, in the county of Worcester and State of Massachusetts, have invented a new and Improved Automatically- Threading Loom-Shuttle, of which the following is a specification.

In automatically threading shuttles such as are employed in the well known Northrop loom (exemplified, for example, in United States Letters Patent of Northrop No.

' 529,940, November 27 1894) it is essential wherein- Figure 1, is a plan view of the eye end of a shuttle, parts being broken away to facilitate illustration. Fig. 2, is a horizontal section in the plane indicated by the line 2-2 in Fig. 3. Fig. 3, is a longitudinal section in the plane indicated by the line 3-3 in Fig. 1. Fig. 4, is a longitudinal section in the plane indicated by the line 4-4 in Fig. 1. Fig. 5, is a cross section in the plane indicated by the line 5-5 in Fig. 1. Fig. 6, is a perspective view of a block inserted in the threading passage. Fig. 7, is a cross section in the plane indicated by the line 7-7 in Fig. 6. Fig. 8, is a side view of the eye of the shuttle. Fig. 9, is a perspective View of the lining of the eye.

The present improvements will be best appreciated by comparison with the threading ends of the shuttles illustrated in United States Letters Patent of Stimpson, No. 933,497, September 7, 1909, and in United States Letters Patent of Smith, No. 1,074,656, October 7 1913.

As shown in the accompanying drawings A, is the body of the shuttle having the slotted eye B, at one side and the usual chamber C, which contains'the weft carrier.

' Communicating with the weft chamber 0,

many respects to that illustrated in the aforesaid Stimpson Patent No. 933,497. The characteristics of this sheet metal threader to be here noted consist in the spaced side walls a and b; the bottom 0; the hookd, which overhangs the threading passage between the side walls of the threader at the entrance end, as illustrated in Fig. 5, leaving a narrow throat for the descent of the thread into the threadin passage; the beak e, at the forward end 0 the threader; the horn f, which guides the thread downwardly from the beak to the slotted eye; and the guard g, which overhangs the beak. These characteristics, as thus far specified, are similar to the corresponding characteristics of the said Stimpson patent. The sheet metal threader "is maintained in place by a transverse bolt 1), as in said Stimpson patent.

Forward of the horn f, is the delivery passage E, which is in communication with the slotted eye B, as illustrated in Fig. 2. The shuttle after receiving a fresh supply of weft travels in the direction indicated by the arrow in Fig. 2, and the thread is thus drawn into the threading passage below the hook d, the beak e, and the guard Then, on the return flight of the shuttle in the direction indicated by the arrow in Fig. 1, the thread is drawn inwardly through the delivery passage E, beneath the horn f, over the shoulder F, of the shuttle and into the open mouth of the eye 13. This mode of operation is that common tothe shuttle of said Stimpson patent.

In accordance with the present invention. a hard cast metal block G, is located between the side Walls of the sheet metal threader and rests upon the bottom thereof, said block having a thread retainer H, which overhangs the threading passage between the rear hook d, and the beak f, as in said Smith Patent No. 1,074,656. This thread retainer extends rearwardly toward the rear wall a, of the sheet metal threader leaving a narrow passage for the entrance of the thread. This thread retainer aids in holding the thread down and preventing it getting out of the threading passage. This block has a transverse passage h, through which passes the same transverse bolt D, which secures the sheet metal threader in place.

The improvements constituting the pres-f 'ent invention areas follows:

the block thereby leaving a'throat k, for the passage of the thread. As shown in Fig. 3,

the lower outer edge of the projectionI, constitutes a continuation of the horn f, for directing the thread below the hook and into the eye. The inner straight edge of the hook i, constitutes the outer side of the eye as illustrated in Figs. 3 and 4; and the horizontal top of the throat k, is below the open mouth of the eye. The point of the hook 2', extends below the bottom of the eye as shown in Fig. 3. Accordingly, for the thread to get out of the eye after it is once threaded necessitates it getting beneath the point of the hook. By reference to Fig. 2, in which the full outer extent of the projection I, is illustrated in dotted lines, it will be noted that there is only a small space between the rear face of the projection I, and the vertical rear wall Z, of the delivery passage E,

thus leaving a narrow gap for the passage of the thread. Accordingly, should the thread get below the point of the hook e', before it, can escape, it has to pass upwardly into the delivery passage E, through this narrow gap and also over the shoulder F, of the shuttle.

Even ifthis happens, the thread has still to run the gauntlet of the thread retainer H. the hook d, the beak f, and the guard g, before it can escape from the threading passage alto ether. The thread is thus reliably held in p ace after it has once been threaded.

The upper face J (see Fig. 6), of the crosswise extending portion of the block Gr, constitutes the bottom of the thread passage. As shown in Fig. 4, this bottom of the threading passage extends upwardly from its inner to its outer end. .The portion m, of this threading passage bottom which is immediately beneath the thread retainer H, constitutes a floor which slopes downwardly from frontto rear and the under face of the thread retainer isparallel with this floor m, thus providin a threading passage which is upwardly inc ined from the inner to the outer end and from the rear to the front both at its top and bottom. The upper face of the thread retainer inclines downwardly from front to rear to direct the thread 'downwardly into the threading passage. As

shown in Fig. 4, the inner lower corner (at the right) of the thread retainer H, is lower than the outer edge (at the left) of the floor 17).. Consequently, as the thread is drawn downwardly from the threading passage and into the eye of the shuttle (see Fig. 6), the thread drags thus applying tension to the thread. Also, the thread in passing over the floor m, of the threading pasagaaeoe T sage to the eye reeves over the outer edge of aforesaid Smith patent, but said eyes have 4.

commonly been cylindrical in cross section and slit at the top for the entrance of the thread. In accordance with the present in.- vention the sheet metal lining K, has upwardly extending separated legs at, 0, (Figs.

8 and 9), thereby furnishing exclusively,

metallic walls for the contact of the thread after it passes over the shoulder F, of the shuttle body. The inner leg 0, extends beneath the forwardly extending top flange 'p, of the sheet metal-threader so that there is no possibility of the thread getting cut.

The outer point of the overhanging guard extends into a recess 8, (Figs. 1 and 3), in

the shuttle body and below the bottom of the delivery passage E, so that the catching of the thread beneath the overhanging guard is prevented.

I claim-- 1. An automatically threading shuttle having a slotted side delivery eye B; and a sheet metal threader, having, spaced side walls a, b, a beak e, extending rearwardly from the front wall I), and outwardly beyond the eye, a horn f, directing the thread from the beak to the slot of the eye, and a guard g, extending from the rear wall a, forwardly over the point of the beak; in combination with a metal block G between the side walls of the threader, said block havin a rear wardly extending thread retainer a floor m, beneath the retainer and spaced therefrom, the lower face of the retainer and the surface of the floor sloping downwardly toward the rear, and sloping upwardly from the inner to the outer end, thereby forming a threading passage which is upwardly inclined from the innerto the outer end and from the rear to the front at both top and bottom, arid a projection I, extending from the front portion of the block outwardly and over the lower part of the thread eye,

said projection having, a downwardly ex- 7 tending hook e, which is beyond the outer.

wall 7', of the block and extends below the bottom of the thread eye, whereby said hook serves as an outer wall for said eye, the space between the hook z', and the outer face of the block constituting a throat the top of which is below the plane of the floor m...

eye, and a guard 9, extending from the rear wall a, forwardly over the point of the beak; and a delivery passage E, having a vertical wall Z; in combination with a metal block G, between the side walls of the threader, said block haviilig a rearwardly extending, thread retainer the outer wall j,

a floor m,-beneath the retainer and spaced therefrom, the lower face of the retainer and the surface of the floor sloping downwardly toward the rear, and sloping upwardly from the inner to the outer end, thereby forming a thread passage which is upwardly inclined from the inner to the outer end and from the rear to the front at both top and bottom, and a projection I extending from the front portion of the block outwardly and over the lower part, of the thread eye, said projection having a downwardly extending hook c, which isbeyond of the block and extends below the bottom of the thread eye, whereby said hook serves as an outer wall for said eye, the forward edge of said hook constituting a downward continuation of the horn and being spaced from said wall Z to form a narrow threadpassage.

3. An automatically threading shuttle having, in combination, a slotted side delivery eye; a threader having spaced side walls; and of the threader, said block having a rearwardly extending thread retainer, and a floor beneath the retainer and spaced therefrom, the lower face of the retainer, and the surface of the floor sloping downwardly toward the rear, and sloping upwardly from the inner'to the outer end, thereby forming a thread passage which is upwardly inclined from the inner to the outer end and from the rear to the front at both top and bottom.

4. An automatically threading shuttle having, in combination, a slotted side delivery eye; anda threader having a block with a rearwardly extending thread retainer, and a floor beneath the retainer and spaced therefrom, the lower face of the retainer and the surface of thefloor sloping downwardly toward the rear, and sloping upwardly from the inner to the outer end, thereby forming a thread passage which is upwardly inclined from the inner to the outer end and from the rear to the front at both top and bottom.

5. An automatically threading shuttlea block between the side walls having, in combination, a slotted side delivery eye; and a threader with a rear wardly extending thread retainer and a floor beneath the retainer and spaced therefrom, the lower face of the retainer and the surface of the floor sloping downwardly toward the rear, and sloping upwardly from the inner to the outer end, thereby forming I a thread passage which is upwardly inclined from the inner to the outer end and from the rear to the front at both top and bottom.

6. An automatically threading shuttle having, in combination, a slotted side delivery eye; a sheet metal threader having a thread passage; and a metal block between the side walls of the threader, the upper face of the block constituting the floor of the thread passage, said block having a projection extending from its front outwardly and over the lower part of the thread eye, said projection having a downwardly extending hook which is beyond the outer wall of the block and extends below the bottom of the thread eye, whereby said hook serves as an outer wall for said eye, and the top of the throat formed by said projection and hook being below the floor of the thread passage and the slotted entranceto the eye.

7. An automatically threading shuttle having, in combination, a slotted side delivery eye and a threader having a thread passage and a block with its upper face constituting the floor of the thread passage and with a projection extending from its front outwardly and over the lower part of the thread eye, said projection having a downwardlyextending hook which is beyond the outer wall of the block and extends below the bottom of the thread 0 e, whereby said hook serves as an outer wa "for said eye, and the top of the throat formedby said projection and hook the thread passage a he slotted entrance to the eye.

8. An automatically threading shuttle I have hereunto being below the fioor of i

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