US305933A - Shuttle - Google Patents

Description

(HO Model.)

B. P. LANDIS.

I r SHUTTLE. N0. 305,933. Patented Sept. 30, 18st.

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I UNITED STATES PATENT rerun BENJAMIN FRANKLIN LANDIS, OF ST. JOSEPH, MISSOU ti.

SHUTTLE.

SPECIPIGATION forming part of Letters Patent No. 305,933, dated September 30, 1884.

Application filed July 25, 1583.

the following is a description.

This invention relates to that class of shuttles used for carrying the lower thread in sewingunachines. It is very desirable that a shuttle should carry as much thread as possible, and yet be as small in diameter as possible. This necessitates the winding of the thread on a very long spool or bobbin, and as it is common to withdraw the thread in use from a hole in the side of the bobbin central to its length,'the thread necessarily has great lateral traverse, and consequently a very irregular strain.

The object of my invention is to even the strain upon the thread by lessening its lateral traverse in drawing from the bobbin in the shuttle. To thisend my invention consists in a shuttle or spindle and bobbins hereinafter described and claimed, reference being had to the accompanying drawings, in which Figure 1 is an interior View of a shuttle, showing the spindle and one bobbin in place. Figs. 2, 3, and 4: are similar views showing a spindle, two bobbins, and thread in differentstages of unwinding.

A represents the shuttle, which may be oi any usual form, provided with a central out let, a, for the thread, and with end bearings,

' b, of any suitable form, for the spindle B.

This spindle is a straight wire, which may be pointed at one or both ends to lessen friction from endwise thrusts in drawing the thread.

G and G represent two spools or bobbins, which I prefer to make each about one-third the length of the spindle inside the bearings. In winding these bobbins and the spindle, I begin by windingon the first spool, G, and proceed to wind that spool. Then I wind the thread quickly, say by three or four turns around the spindle across to spool (3, which I wind full. Then I wind the spindle full between the two spools. In this way any number of bobbins may be prepared to be in- (l\'o model.)

sertcd when needed in the shuttle. Then the end of the thread being passed out at hole a, the shuttle is ready for use. The first result is the unwinding of the spindle, which being wound'for only a short distance each side of the delivery-hole does not strain the thread farlaterally. hen this portion of the spindle is empty, the thread draws spool O in front of the delivery-hole, and that spool continues to reciprocate endwise in front of the hole to accommodate the strain of the withdrawing thread. When spool O is empty, spool C is drawn in front of the dischargehole, sliding the empty spool C out of the way. By this construction and method of winding I lessen the sidewise strain upon the thread two-thirds or more, owing to the freedom of the spools to reciprocate to the lateral strain of the thread.

These shuttles and bobbins may be used in any industry to which they are suited, such as sewing, weaving, &c., and any desired number of spools nay be used in a single shuttle operating on the same principle,

I am aware that a shuttle has been provided with two or more separately-journaled spools, or spools j ournaled on separate spindles not to slide endwise thereon, and I do not claim such as my invention.

A shuttle with a central thread-delivery is one with a hole as near its center as usual, longitudinally.

One short bobbin on a spindle would accomplish my purpose to some extent, but not so well as two.

The bobbin and the method of preparing the same described being the subject of another application for a patent which I am now making, I do not herein claim them.

"What I claim, and desire to secure by Lettors Patent, is v 1. The combination, with a shuttle having a bobbin-chamber within it, and bearings at each end thereof to receive a spindle, and a' thread-delivery at one side of the shuttle near its center longitudinally, of a spindle fitted to the said bearings and a spool fitted loosely on the spindle, the said spool being about dle, to permit the thread to be drawn directly each shorter than one-hall the length of the from any point on the length of the spool to spindle and free to reciprocate longitudinally :0 .the thre'addelivery in the shuttle, as shown thereon.

and described.

5 2. The combination, with a shuttle having BENJAMIN FRANKLIN LANDIS' a central thread-delivery and spindle-bean Vitnesses:

ings, of a spindle constructed to rotate in said W. D. SIOELUFF,

bearings, and two spools upon said spindle, 1' F. XV. BRADLEY.

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