US768926A

US768926A - Thread-brake.

Info

Publication number: US768926A
Application number: US15753203A
Authority: US
Inventors: Henry A Bates
Original assignee: SUMMIT THREAD Co
Current assignee: SUMMIT THREAD Co
Priority date: 1903-05-13
Filing date: 1903-05-13
Publication date: 1904-08-30
Anticipated expiration: 1921-08-30

Description

N0. 768,926. PATENTED AUG. 30,1904.

' H. A. BATES.

THREAD BRAKE.

APPLICATION FILED MAY 18, 1903.

N0 MODEL.

UNiTEn STATES Patented. August 30, 1904.

PATENT ()FFICE.

HENRY A. BATES, OF MIDDLETOWVN, CONNECTICUT, ASSIGNOR TO THE SUMMIT THREAD COMPANY, OF EAST HAMPTON, CONNECTICUT, A

CORPORATION OF MAINE.

THREAD-BRAKE.

SPECIFICATION forming part of Letters Patent No."768,926,'datec1 August so, 1904.

Application filed May 18,1903.

To all whom it may concern.-

Be it known that I. HENRY A. BATES, a citizen of the United States, residing at Middletown, in the county of Middlesex and State of Connecticut, have invented an Improvement in Thread-Brakes, of which the following is a specification.

In the various forms of sewing-machines difficulties have heretofore been experienced because of the too free paying off of the thread from the spools or cops,which in spools placed vertical was liable to cause the thread to twist around the standard beneath the spool and in spools placed horizontal caused a jerking movement in which the thread was either too taut or very loose, all of which it is the object of my invention to overcome.

1n carrying out my invention I provide a pivotally-mounted fine-wire frame of parts twisted together to form one or more loops, and preferably a series of loops, through which the thread is passed and drawn ofi the spool or cop. This frame not only directs the delivery of the thread from the spool or cop, but moves to compensate for the slack and draft, and said frame is to be pivotally mounted, so as to be free to move as the thread is drawn off the spool or cop so as to take up the slack and move with the draft on the thread and so to brake the same. I prefer to pivot the fine-wire frame to the pivot-bar of a bracket-arm over the spool or cop, which is supported upon a base and is passed over a standard, and to make the free end of the bracket-arm with an enlargement and an eye and to pass the thread from the spool or cop through the eye and back and forth through the series of loops of the fine-wire frame.

In the drawings, Figure 1 is an elevation, and Fig. 2 a plan, representing my invention.

(t represents a cop upon astandard 7),which is connected to a support or base 0. A spool may occupy the position of the cop without departing from my invention. Secured to the base 0 and rising therefrom is a bracketarm (Z, the upper portion of which is at right angles to the upright portion and in a horizontal plane. This upper portion is provided Serial No. 157,532. (No model.)

with a pivot-bar d and an enlarged free end (Z in which end'is an eye 2. y

' The fine-wire frame is composed of parallel portions 6 a with eye ends which pass around the pivot-bar CZ between the enlarged end thereof and the union of said pivot-bar with the horizontal portion of the bracket-arm. The parallel portions (2 e are twisted together at e and formed into circular loops in a plane parallel with each other and with the twisted portion. In the drawings I have shown four of these circular loops, but do not limit myself to the employment of any particular number, as the function of the device would be the same and the same result would be obtained by the employment of a single loop, except possibly in a different degree.

I prefer to employ a series of circular loops. The connection of the parallel parts e with the pivot-bar (Z is preferably formed by twisting the free ends of the wire loosely around the bar. The wire frame is adapted to hang from the pivot-bar (Z by gravity and to come at one side of the line of the bracket-arm cl; but the circular loops 6 project from said frame toward the line of the bracket-arm, so that their ends are substantially in line therewith, providing a straightaway draft for the thread which passes up from the cop a, through the eye 2, and back and forth through the loops 6 of the series forming part of the fine-wire frame. This frame is adapted to rise and fall with the tension upon the thread, so as to take up the slack and brake the thread.

I not only do not limit myself to the number of circular loops of the fine-wire frame, but I do not limit myself to the peculiar pivotal connection of said frame to its support; nor do I limit myself to placing the spool or cop vertical, although the vertical position is preferable. This device is simple. It is easily applied as a thread and cop device to sewingmachines already in use, and it forms an effective thread-brake.

I claim as my invention 1. The combination with a thread-holder such as a spool or cop, a standard upon which the same is received and a support therefor, of

a fine-wire frame twisted to produce a series of alining loops in a plane substantially parallel to the draft-line of the thread, a support to which the free ends of said frame are pivotally connected so that the frame is adapted to hang by gravity, the thread from the thread holder passing through the loops of said finewire frame, substantially as set forth.

2. The combination with a thread-holder, such as a spool or cop, a vertical standard upon which the same is received and a horizontal support therefor, of a fine-wire frame twisted to produce a series of alining loops, a bracketarm rising from the support and having a horizontal portion, a pivot-bar formed with the bracket-support and to which the fine-wire frame is pivotally connected above the spool or cop, so that the frame is adapted to hang by gravity, the thread from the thread-h0lder passing through the loops of said fine-wire frame.

3. The combination with a thread-holder, such as aspool or cop, a standard upon which the same is received, a support therefor, a bracket-arm rising from the support and having a part at right angles thereto, terminating in an enlargement with an eye and formed at one side with a pivot-bar, of a fine-wire frame having parallel parts pivotally connected to the said. bar and twisted to produce a series of alining loops, the thread from the threadholder passing through the eye at the end of the bracket-arm and through the loops of said fine-wire frame.

4. The combination with a thread-holder such as a spool or cop, a standard upon which the same is received, a support therefor, a bracket-arm rising from the support and having a part at right angles thereto terminating in an enlargement with an eye and formed at one side with a pivot-bar, of a fine-wire frame in part twisted together and having in the twisted portion a series of alining circular loops, the free ends of the frame being substantially parallel and bent around the aforesaid pivot-bar, the alining loops being in a plane substantially parallel to the draft-line of the thread, the frame hanging by gravity from said pivot-bar, and the thread from the thread-holder passing through the eye at the end of the bracket-arm and successively back and forth through the alining loops of the fine-wire frame.

Signed by me this 14th day of May, 1903.

HENRY A. BATES.

\Vitnesses:

Guo. T. PINOKNEY, S. T. HAVILAND.