US1221048A - Self-threading shuttle. - Google Patents

Description

H. W. HAKES.

SELF THREADING SHUTTLE.

APPLICATION FILED 06T. I2, I9I2.

Patented Apr, 3,1917.

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211;. ramera Fllllm HUDSON W. RAKES, 0F MILLBURY, MASSACHUSETTS.

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Specification of Letters Patent.

Patented Apr. Y3, 1917.

Application lcd October 12, 1912. Serial No. 725,389.

To all whom t may concern.'

Be it known that I, HUDSON W. HAKES, a

citizen of the United States, residing at tion relates particularly to a metallic thread guide adapted to be inserted in the body portion of the shuttle, having an opening therethrough which constitutes the delivery eye of the shuttle and communicates through a slit with the bobbin chamber, whereby the operator can draw the filling thread from the bobbin through the slit and through a peculiarly shaped passage in th-e thread guide into the interior of the thread guide.

The object of my invention is to improve the construction of the thread guide by which the entrance of the filling thread is facilitated and its accidental removal from the thread guide prevented, and also, further, to provide a thread guide adapted to different shuttles having the communicating slit between the delivery eye and the bobbin chamber in different positions.

In the accompanying drawings,

Figure 1 is a plan view of a shuttle containing a thread guide embodying my present invention.

Fig. 2 is a side view of the forward end of the shuttle, showing the position of the thread guide on the contact side of the shuttle, or the side opposite the delivery eye.

Fig. 3 is a side view of the forward end of the shuttle, showing the side containing the delivery eye.

Fig. 4 is a plan view of the thread guide on an enlarged scale.

Fig. 5 is a side view.

Fig. 6 is a bottom view, and

Fig. 7 is a perspective view representing the position of the thread guide in the body of the shuttle, which is indicated by broken lines.

Similar reference characters refer to similar parts in the diiferent figures.

The thread guide which embodies my present invention is adapted to be used with any of the ordinary types or usual forms of loom shuttles, having a shuttle body 1 containing a bobbin chamber 2 in which a bobbin 3 may be supported upon the bobbin spindle 4 in the usual manne-r. At one end of the bobbin chamber 2 and in axial alinement therewith is a longitudinal recess 5 communicating at its forward end with a transverse passage 6 through the body of he shuttle substantially circular in cross section. yl`h`e passage 6 receives a hollow or tubular thread guide 7 provided with a thread entering slit of peculiar shape, as hereinafters described, through which the thread is allowed to enter into the interior` or tubular passage 8 of the thread guide.

The thread guide in the illustrated embodiment of my invention is preferably constructed from a sheet metal blank, which is pressed or rolled into substantially tubular form, as represented on an enlarged scale at 7 Figs. 4l to 7 inclusive. The blank from which the thread guide is constructed is of suitable outline to form, when pressed into tubular shape, a thread guide having a central passage or bore open at both ends of the guide. rlhe end 9 of the guide is of cylindrical shape and is provided with a projecting rib 10, and the transverse passage 6 is cut away at 11 for a short distance from the back side of the shuttle to admit the rib 10 and hold the thread guide from rotation in thebody of the shuttle. The thread guide is positioned in the body of the shuttle, as shown in Figs. 2, 3 and 7, with the rib 10 on the under side of the guide. rEhe thread guide is cut away to form a notch 12 which is exposed within the recess 5 and across which a thread 18 is drawn into a vertical arc-shaped slit 14. The slit 1-1 communicates at one end with the recess 5 at one corner thereof, and the bottom of the arc-shaped slit 111 communicates with a slit 15, Fig. 3, leading from the slit 14: to the transverse passage 6.

When. the thread is conducted through the recess 5 and slits 141 and 15, it will be drawn around the edge of the thread guide at the notch 12 against the outer surface 16 of a prong 17. The transverselpassage 6 is cut away opposite the prong 17 to form a passage 18, to allow the thread to be drawn downward over the surface 16 of the prong 17 until it strikes an edge 19 of an opposing prong 9.0. With the exertion of a pull in a substantially horizontal direction toward the bobbin chamber of the shuttle, the tension the thread'will be drawn laterally off the,

'out away to form a straight edge or supporting wall 22, for the purpose of adapting the thread guide for use in shuttles in which the i arc-shaped guide slit 14 is changed into the position indicated by the broken lines 23, in which the slit communicates with the recess 5 upon the opposite side of the recess, causing the thread, as it is drawn into the arcshaped slit, to lieacross the edge 22 and be 1 supported thereon while the thread is being drawn against the outer side 16 of the prong 17. At this point in'threading the shuttle,

edge 22 into the notch 12.

When the thread guide is inserted in the shuttle,'the delivery end 24 is brought substantially Hush with the vertical outer side of the shuttle and, in this position, the widened outer end of the slit 21 leaves the shuttle woodexposed at the point 25, Fig. 7, forming a shoulder against which the thread contacts when it is drawn downward. This shoulder prevents the thread from being drawn over a rounded edge 26 of the prong AA20 into the oblique slit 21. This construction prevents the accidental escape of the thread from the tubular thread passage or bore of the thread guide. In order to disengage the thread from the thread guide through the slit 21, it is necessary that the thread be drawn into a position which is oblique to the axial lineof the thread guide.

As I have heretofore mentioned, my improved thread guide is adapted for use with shuttles having the thread passage in the body of the shuttle in different positions. If the thread passage is located as shown by Athe broken lines 27, Fig. 1, the thread will contact with the edge 28 of the thread guide as the thread is drawn forward. The edge 28 will then serve as a caln surface to move the thread back into the notch 12, a clearance having been provided in the body of the shuttle for that purpose.

I claim,

T'he combination with a loom shuttle providing a recess in alinement with its bobbin chamber, of a tubular thread guide disposed transversely to said recess, and having its wall out away intermediate its ends for connecting said interior with said recess, with a thread entering slit extending from said out away portion to the end of said guide, said slit having oppositely inclined portions at the bottom of the guide whereby to form a thread lock, the outer inclined portion being formed between two projecting prongs, one of which presents a convex edge extending past the vertical plane of the axis of said guide.

HUDSON W. HAKES.

Witnesses PENELOPE COMBERBACH, NELLIE WHALEN.

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

, Y Washington, D. C.

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