US849140A - Thread controlling and unwinding device for sewing-machine. - Google Patents

Description

No. 849,140. EATENTED APR. 2, 1907. J, H. LA BATE. THREAD CONTROLLING AND UNWINDING DEVICE FOR SEWING MACHINES.)

APPLICATION FILED DEO.21.'1906. I

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UNTTE El STATES ATENT FFTQEE.

JAMES H. LA BATE, OF BROCKTON, MASSACHUSETTS.

THREAD CONTROLLING AND UNWINDING DEVICE FOR SEWING-MACHINES.

Specification uf Letters Patent.

ratented April 2, 1907.

Application filed December 21,1906. Serial No. 848,890.

To (tZZ Zl/h/OYTZ/ it may concern.-

Be it known that 1, JAMES 11. LA BATE, of Brockton, in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Thread Controlling and Unwinding Devices for Sewing-Machines, of which the following is a specification.

This invention has for its object to provide means for supporting a spool of thread on .he arm of a sewing-machine for guiding the thread from he spool to the head and tension devices of the machine in such manner as to xnsure a free and regular delivery of the thread and to prevent the possibility of coils or loops of the thread dropping over the end or ends of the spool and becoming entangled with the spool and its support.

The invention consists in the improvement which I will now proceed to describe and cl aim.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a side elevation showing the arm of a sewingmachine with my improved unwinding device applied thereto. Fig. 2 represents a front elevation showing the unwinding device removed from the sewing-machine arm.

The same letters of reference indicate the same arts in all the figures.

In t 1e drawings, (t represents the arm of a sewing-machine.

1) represents a vertical stud or spindle affixed to the arm and projecting upwardly therefrom.

0 represents a head or block detachably secured to the stud 5, .he block being preferably provided with an aperture adapted to receive the stud and with a setscrew e, adapted to detachably secure the block to the stud. f represents a bent rod, one end of which is aflixed to the block 0 the rod rising from the lock and being bent at a point above the same to form a horizontal arm or spindle f, adaped to pass through the bore of the spool g, the spool being therefore horizontally supported and adapted to rotate on a horizontal axis formed by the spindle f. The spindle is provided with suitable stops h h to confine the spool against loose endwise movement, said stops being preferably collars detachably secured by set-screws or otherwise to the spindle.

i represents a bent rod afiixed at one end to the block 0 by means of a set-screw or otherwise, the rod extending vertically upward from said block and being bent at a point above the block and above the spindle f to form a horizontal arm t, located over the spindle 7. To said arm is affixed a thread-guide j, consisting of a finger suitably affixed, detachably or otherwise, to the arm i and projecting downwardly therefrom, the said finger having an orifice j, through which the thread it from the spool is adapted to pass. As shown in Fig. 2, the thread-guide j is directly over the longitudinal center of the spool, so that a stretch of the thread passing from either end of the spool is inclined inwardly from the adjacent end of the ipool, as indicated by the dotted lines m min The thread passes from the spool-through the guide and from thence to the usual or any suitable guide n on the sewing-machine head, the thread passing from the guide n to the needle and engaging the usual or any suitable tension devices on its way to the needle. As the thread unwinds it passes upward to the guide, the portions drawn from the ends of the spool being inclined inwardly toward the center of the spool, so that the thread never overh angs or projects outwardly over the ends of the spool, and consequently cannot become caught between the ends of the spool and the spindle on which the spool is supported.

I have here shown the device adapted to accommodate one spool; but it is obvious that the number of spool holding spindles and thread-guides may be increased to accommodate any desired number of spools, each spindle having a corresponding thread guide, the two relatively arranged, as here shown.

The stops lb 72, are relatively, adjustable to accommodate spools of different lengths, and one or both of said stops may be movable on the spindle f and provided with holding means, such as a set-screw h, for securing it at any desired adjustment, although, if desired, the inner stop may be fixed or immovable on the spindle, the outer stop being adjustable toward and from the inner stop. The thread-guide is correspondingly adjustable on the arm or holder i, so that it may be centralized relatively to the stops it h whatever may be the relative positions oi" said stops, the thread-guide being provided with means, such as a set-screw 72/, for securing it in any position to which it may be adjusted.

It will be observed that the device as a Whole comprises an attachment which is capable of being applied to or removed from the ordinary vertical spool-spindle, such as that shown at b in the drawings. I n. other Words, instead of putting a spool on the vertical spindle b, as is the most customary method, the block or base 0 is applied to said spindle and secured there, said block or base having adjustably secured to it the spoolspindle and the threatbguide. By this construction the device as a whole can be removed from the sewing-machine Without changing the relative positions of the spoolspindle and. the thread-guide, thereby enablin the attachment to be reapplied to the spindle b expeditiously and Without having to readjust the relative positions of the spoolsupport and overhead thread-guide.

I claim-- 1. An unwinding device for sewing-machines, comprising a substantially horizontal spoolspindle having stops to prevent end- Wise displacement of the spool, said stops being adjustable to conform to spools of different lengths, a threaduide located above the spindle, and means for holding the threadseaiao guide in a plane between the vertical. planes of the ends of the spool, said. supporting means having provisions for laterally adjusting the thread-guide to correspond with adjustments of said stops to centralize it for spools of diilerent lengths.

2. An unwinding device for sewing-mar chines, comprising two bent standards, each having a vertical supporting portion, and a iorizontal portion. extending laterally therefrom, one of said horizontal portions constituting a spool-spindle, and being provided with spool-stops, While the other horizontal portion constitutes a thread-guide holder, a base to Which said standards are attached, said base having means for engagement with the frame of the machine, and a thread-guide aflixed to the said holder, and located in a plane between the vertical planes of the ends of the spool.

In testimony whereof I have tffiX6d my signature in presence of tWo Witnesses.

JAMES H. LA BATE. Witnesses FANNIE B. LA BATE, SEWELL P. HOWARD.

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