US1248077A - Loom-shuttle. - Google Patents

Description

L. E. CHASE LOOM SHUTTLE. APPLICATION FILED APR. 2. 1917.

Patentkad Nov. 27,191fi;

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LOUIS E. CHASE, OF WILKINSONVILLE, MASSACHUSETTS.

LOOIVI-SHUTTLE.

Application filed April 2, 1917.

To all whom it may concern:

Be it known that 1', LoUIs E. CHASE, a citizen of the United States, residing at Nilkinsonville, in the county of lVorcester and State of Massachusetts, have invented a new and useful Loom-Shuttle, of which the following is a specification.

This invention relates to a loom shuttle and particularly to certain improvements in the devices for holding a weft carrier therein.

Such devices for use in automatic weft re plenishing looms commonly comprise a pair of weft carrier holding jaws, means to hold said jaws securely in the shuttle, and a guide plate by which the incoming weft carrier is directed to its proper position.

It is the object of my invention to provide a construction in which the several parts above mentioned will be more firmly supported in the shuttle, and in which accidental relative displacement of the parts is effectively prevented.

lVith this general object in view my invention comprises certain arrangements and combinations of parts by which simplicity of construction and economy of manufacture are secured. These arrangements and combina tions will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of my invention and two modifications thereof are shown in the drawings, in which Figure 1 is a plan view of a portion of a shuttle having my improved weft carrier holding devices embodied therein;

Fig. 2 is a vertical longitudinal sectional view taken along the line 2-2 in Fig. 1;

Fig. 3 is a transverse sectional view taken along the line 33 in Fig. 2;

Fig. 4 is a plan View of the weft carrler holding jaws and the shank piece to which they are secured;

' Fig. 5 is a side elevation of the parts shown in Fig. a;

Fig. 6 is a perspective view of a filler piece to be described;

Fig. 7 is a detail transverse sectional elevation taken along the line 77 in Fig. 1;

Fig. 8 is a partial perspective view of a modification, and

Fig. 9 is a partial side elevation of a second modification.

Referring to the drawings, I have shown a portion of a shuttle 10 of a common type, said shuttle having a central opening ex- Specification of Letters Patent.

Patented Nov. 27, 1217.

Serial No. 159,056.

tending entirely through the shuttle from top to bottom as is usual in shuttles intended for use in automatic weft replenishing looms.

My improved weft carrier holding device consists primarily of a pair of spring jaws 11 and 12 grooved at 13 to receive the butt rings of a weft c: rier or bobbin lei 1). The jaws 11 and 12 are welded to an intermediate or shank piece 15 having a projection 16 extending above the jaws 11 and 12. In the form shown in Figs. 1 to 7 the projection 16 cut away at its outer end to form a shoulder 17 (Fig. The shank piece is preferably formed of relatively soft, untempered material such as mild steel or wrought iron.

A guide plate of the usual form is used, comprising a base portion 20, an inclined directing portion 21 and an upper portion 22. The jaws 11 and 12 and shank 15 rest upon the base portion 20, and the upper portion 22 is firmly engaged and supported by the projection 16 of the shank piece 15. The guide plate is secured in the shuttle by the usual screw 23, and the spring aws are also secured in place by a pin 24 shown in section in Fig. 2.

In the preferred form I also provide a U- shaped filler member (Fig. 6) adapted to inclose the projection 16 and provided at its open end with beveled parts 25 adapted to engage and support the inclined directing portion 21 of the guide plate. Reference to Fig. 7 will show that the filler piece 25 fits closely between the projection 16 of the shank piece 15 and the side walls of the shuttle 10, thus providing additional lateral bearing surface on the wood of the shuttle without increasing the width of the expensive stock used to form the spring aws 11 and 12. The filler 25 also rests upon the top edges of the springs 11 and 12 and engages the under side of the portion 22 of the guide plate, thus providing an additional bearing surface for said plate. Furthermore, the left-hand or closed end of the filler (as viewed in Fig. 2) engages the end wall of the recess in the shuttle, while the beveled parts upon the right-hand end engage and support the directing portion 12 of the guide plate, and also serve to definitely position the guide plate longitudinally in the shuttle.

It is found that this construction possesses many important advantages. The formation of the Weft carrier holding springs as separate spring members welded to a soft shank piece is found in practice to produce an extremely serviceable pair of spring jaws, and the breakage heretofore common in these holding jaws is largely reduced. The provision of the upward projection l6 firmly supporting the upper portion 22 of the guide plate adds much to the rigidity of the structure and this is still further increased by the use of the curved filler piece 25.

I'Vhile the construction above described is a preferred construction, many of the advantages of my invention may be retained when the filler piece 25 is omitted, while at the same time the cost of construction is correspondingly reduced. hen the filler piece is omitted I prefer to form the shank piece as shown in Fig. 8, the projection 16 being of the full size of the shank piece, while the cut-out shoulder 17 is omitted. This projection serves the same functions as the preferred form of shank piece, but

does not permit the use of the filler piece.

previously described.

I11 Fig. 9 I have shown a second modification in which the shank piece is prolonged to directly engage the inclined directing portion of the guide plate. This form is the strongest and most rigid of the forms described herein but is also slightly more expensive to manufacture.

Having thus described my invention, it will be evident that other changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of my invention as set forth in the claims, and I do not wish to be otherwise limited to the details herein disclosed, but what I claim is 1. In a loom shuttle, a pair of weft carrier holding spring jaws each formed from a separate strip of spring steel, a shank of soft steel to which one end of each jaw is welded, said shank and jaws forming a single integral structure, said shank having a projection extending above the plane of said jaws, a guide plate secured in said shuttle and having a lower portion supporting said shank and jaws and an upper portion engaging and supported by said projection and spaced above said jaws, and means for securing said parts in the shuttle.

2. In a loom shuttle, a pair of weft carrier holding spring jaws, a shank piece of soft steel welded between said jaws at one end thereof and having a projection extend- 3. In a loom shuttle, a pair. of weft car-' rier holding spring jaws, a shank piece to which said jaws are welded, a guide plate having a portion overlying said shank piece, said shank piece having an upward projection engaging said guide plate, and a U- shaped filler inclosing said projection and extending forwardly thereof, said filler forming a support for said guide plate supplemental to the projection on said shank piece and also providing additional bearing surface against the sides of the shuttle recess.

4:. In a loom shuttle, a pair of weft carrieholding spring jaws, a shank piece therefor having an upward projection above said springs, a guide plate having an upper portion overlying said projection, and a U shaped filler inclosing said projection and resting on said springs, said filler engaging and supporting said guide plate at two different points and positioning the plate longitudinally of the shuttle.

5. In a loom shuttle, a pair of weft carrier holding spring jaws, a shank piece of soft steel welded between said jaws at one end thereof and having a projection extending above the plane of said jaws, a U-shaped filler fitting and inclosing said projection on three sides thereof, and a guide plate having a portion supporting said shank piece and jaws and having another portion supported by said projection and filler, said filler having a beveled extensionengaging and supporting the inclined directing portion of said guide plate.

6. In a loom shuttle, a. pair of weft carrier holding spring jaws, a shank piece therefor having an upward projection above said springs, a guide plate having an upper portion overlying said projection, and a filler piece positioned and supported by said projecting shank piece and engaging said springs on their upper edges, said filler piece also engaging and supporting said guide plate and positioning the same longitudinally of the shuttle.

In testimony whereof I have hereunto affixed my signature.

LOUIS n. CHASE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents.

Washington, D. 0.

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