US718703A

US718703A - Take-up mechanism for sewing-machines.

Info

Publication number: US718703A
Application number: US70996499A
Authority: US
Inventors: Jacob Diehl
Original assignee: STANDARD SEWING MACHINE CO
Current assignee: STANDARD SEWING MACHINE CO
Priority date: 1899-03-21
Filing date: 1899-03-21
Publication date: 1903-01-20
Anticipated expiration: 1920-01-20

Description

No.71 8,703. PATENTED JAN.20,1903.

J. DIBHL.

TAKE-UP MECHANISM FOR SEWING MACHINES.

APPLICATION run) n. 21, 1899.

, I0 MODEL.

. (1)331 I 1 mac a b UNITED STATES AT'ENT OFFICE.

JACOB DIEHL, OF CLEVELAND, OHIO, ASSIGNOR TO THE STANDARD SEWING MACHINE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

TAKE-UP MECHANISM FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 718,7 dated January 20, 1903- Application filed March 21, 1899. Serial No. 709,964. (No model.)

To all whom it may concern.-

Be it known that I, JACOB DIEHL, a citizen of the United States, residing at Cleveland, Ouyahoga county, State of Ohio, have in- 5 vented certain new and useful Improvements in Take-Up Mechanism for Sewing-Machines, of which the following is a specification, reference being had to the accompanyingdrawings, forming part thereof.

My present invention has for its object to provide a simple and eifective take-up mechanism for sewing-machines which will have an equally positive and reliable action when the machine is being operated to sew either at a slow or a very high rate of speed.

In carrying my invention into eifect the take-up is made in the form of an elbow-lever, which is preferably pivotally supported in the head of the machine with one arm projecting at its end through a slot in the faceplate to engage the thread and its other arm pivotally connected with one of a pair of toggle-links, the other of which latter is hinged upon a stationary support attached to the head at one side of the upper driving-shaft.

A link connecting at one end with the needlebar pitman and at its opposite end with said toggle-links communicates movement from the pitman to the latter and the connected take-up, as will be described.

In the accompanying drawings, Figure 1 is a side view of a portion of the head of a sewing-machine embodying my invention, the

frame being in section through line 1 1 of Fig. 2; and Fig; 2 is a front view of the construction shown in Fig. 1 with the frame in section through line 2 2 of Fig. 1.

To/explain in detail, the head 1, the rotating needle-bar-operating shaft 2, with its'attached crank 3, the needle-bar 4, and the pitman 5, connecting said crank and needle-bar, are all of usual and well-known construction.

The take-up consists of the elbow-lever 6,

is hinged upon a stationary pin or support 13, which is attached to the head at one side of the shaft 2. A link 14, connecting at one end with the toggle-links at their joint 15 and at its opposite end with the needle-bar pitman at a point between its ends at 16, imparts movement from said pitman to the togglelinks and connected take-up,whereby the lat- 6o ter is vibrated and caused to move in the de- I sired order of time relative to the other parts of the stitching mechanism, as follows: The entire take-up movement of the take-up is effected during about a one-fifth revolution of the shuttle, and during the remainder of its movement the take-up gives down the necessary amount of thread as required by the needle and shuttle without undue slack.

Having thus set forth my invention, what I claim, and desire to secure by Letters Patcut, is

1. In a sewing-machine, the combination, with the head, the needle-bar, the rotating needle-bar-operating shaft with its attached crank, and the pitman connecting said crank and needle-bar, of a take-up lever pivoted on a stationary support, and means for operating said take-up lever from the pitman, comprising a pair of toggle-links, one of which is pivoted at one end on a stationary support and the other being connected with the takeup lever, and means operatively connecting said links with the actuating-pitman, for the purpose set forth.

2. In a sewing-machine, the combination, with the head, the needle-bar, the rotating needle-bar-operating shaft with its attached crank, and the pitman connecting said crank and needle-bar, of a take-up lever pivoted on a stationary support, and means for operating said take-up lever from the pitman, comprising a pair of toggle-links, one ofwhich is pivoted at one end on a stationary support and theother being connected with the takeup lever, and a link connecting at one end with the toggle and at its opposite end with the actuating l pitman, for the purpose set forth.

- JACOB DIEHL.

Witnesses:

CHAS. C. EMMoNs, PHILIP A. LAMPLINER.