US137108A

US137108A - Improvement in tuck-greasers for sewing-machines

Info

Publication number: US137108A
Authority: US
Publication date: 1873-03-25
Anticipated expiration: 1890-03-25

Description

.L T. STEWART.

TuCk-Creaser fa r Sawing-Machines.

No. 137,108, PatentedMarch25Q1873.

AM PHOTOi/TIIOERAPHIC ca IV.X(0$80RNE.'S macaw) connected parts.

UNITED STATES PATENT GEFIGE.

JAMES T. STEWART, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN TUCK-CREASERS FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 137,1?)8, dated Marrh 25, 1873.

To all whom it may concern:

Be it known that I, JAMEs T. STEWART, of the city and countyof Philadelphia, and State of Pennsylvania, have invented new and useful Improvements in Tuck-Markers; and I do hereby declare the following to be a clear and exact description of the nature thereof, sufficient to enable others skilled in the art to which my invention appertains to fully understand, make, and use the same, reference bein g had to the accompanying drawing making part of this specification, in which- Figurel is a top view of the device illustrating my invention. Fig. 2 is an end view partly in section. Fig. 3 is an end view opposite to that of Fig. 2. Fig. 4 is a top view of the screw-plate, and Fig. 5 is an end view of the marker.

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to improvements in tuck-markers; and consists in an adjustable arm for operating the marker. It also consists in the construction of the frame and It also consists in the screwplate constructed with means for securely holding thesliding parts in position thereon.

' Referring to the drawing, A represents the screw-plate for attachment to the sewing-machine. B represents a plate sliding on the plate A, and above the plate B is arranged an arm, 0, which is secured thereto at one end, a, its other end being free. 1) represents a swinging frame mounted on the arm 0, and consisting of a piece of wire or other suitable material having a longitudinal portion, a, which extends parallel with the arm 0, and transverse sides I), the ends of which are jointed to said arms so that the frame has fixed bearings. E represents the markingarm, which is secured to the frame and moves with it.

In the Letters Patent granted to James S. Hugg, May 28, 1872, the swinging frame is made to slide on an elevated arm, and the marker is hinged to said arm beneath the frame. Said frame has but a single bearing, and if strained or displaced the regularity of marking is impaired, and the marker is rendered unserviceable.

F represents an operating-lever, which consists of abar or arm secured at one end to the arm 0, and at a point between its ends to the portion a of the frame 1), theconnections being such that the lever will slide on both the arm (3 and the part a of the frame, and is thereby rendered adjustable.

Thus it will be seen in my invention that the swinging frame has a bearing at each of its ends, and the sliding operating arm or lever is connected to the rigid arm and the frame, whereby the latter is greatly stiffened and the objections heretofore stated are overcome.

G represents a spring, which is secured to the arm 0, and presses against the frame D, and in connection with the sliding lever opcrates the marker in opposite directions. The screw-plate A is flanged on its sides, and cut away to leave passages 01 for the insertion of the sliding plates B and H. In order to properly hold the said sliding pieces in position I secure tothe screw-plate, between its flanged sides, a confining-plate, J, which is elevated above the bottom of the screw-plate, and so arranged that its sides 6 and f, respectively, overhang the passages 11. Now, when the sliding plates are in position vertical displacement thereof is prevented by the plate J. A vertical screw, 9, is passed through the plate J, and, bearing against the plate or gage H, prevents longitudinal displacement thereof.

A horizontal screw, h, is passed through the flanged end j of the plate A, and is designed to hold in position the plate B, which carries the marking mechanism.

Owing to the light material of which sewing-machine attachments generally are made the screw h, pressing continuously against the plate 13, may cause the latter to bear upward and be gradually forced from its seat on the screw-plate; but here the overhanging end of the confining plate performs an important part by resisting the upward tendency of the plate, and consequently holds the latter firmly in place.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. The operating-lever F connected to and sliding on both the supportingarm O and frame D, substantially as and for the purpose screws g and h, to operate with the sliding described. pieces B and H, and hold them in position, as

2. The frame D supported at both ends on set forth. the arm 0, in combination with the marker The above signed. by me this 17th day of E fixed to the frame and the operating-lever August, 1872. Fsliding thereon, substantially as and for the JAMES T. STEWART. purpose described. Witnesses:

3. In combination with the screw-plate A, JOHN A. WIEDERSHEIM, the elevated and overhanging plate J and the HARRY M. VVIEDERSHEIM.