US451450A

US451450A - James e

Info

Publication number: US451450A
Authority: US
Publication date: 1891-05-05
Anticipated expiration: 1908-05-05

Description

(No Model.)

J. E. BRADLEY.

. TUGK MARKING DEVICE FOR SEWING MAOH IES.

v No. 451,450. Patented May 5, 1891.

wi/bmaooeo v fvwemboz A4i y a W l L m 551g Gite m4 e1 I UNITED STATES PATENT OFFICE.

JAMES E. BRADLEY, OF JACKSON, MICHIGAN, ASSIGNOR OF ONE-HALF TO MARCUS WV. RGBINSON, OF SAME PLACE.

T-UCK-MARKING DEVICE FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 451,450, dated May 5, 1891.

Application filed August 21, 1890. Serial No. 362,681. (No model.)

To all whom it may concern.-

Be it known that I, JAMES E. BRADLEY, of Jackson, in the county of Jackson and State of Michigan, have inventeda new and useful Improvement in Tuck-Markers, of which the following is a specification.

My invention relates to tuck-markers for sewing-machines; and the object of my improvement is to provide an improved attachment for sewing-machines by which the goods may be marked as a guide for making the next fold. I secure this object in the device illustrated in the accompanying drawings, in whichi Figure 1 is a plan view, Fig. 2 a side elevation, and Fig. 3 an end elevation, of a device embodying my invention and the lower end of the needle-bar of a sewing-machine; and Fig. 4: is an elevation of the stop by which the cloth is guided.

Similarlettcrs refer to similar parts th roughout the several views.

A is a lug by which the device is secured to the cloth-plate of the machine.

B is a bar rigidly secured to the lug A and extending therefrom in a direction at right angles to the motion of the cloth in the machine.

0 is a metal block provided with an aperture through which the rod B extends and adapted to slide along said rod.

D is a set-screw by which the block 0 may be secured in the desired position upon the rod B.

H is a lever pivoted at I to the block Oand adapted to oscillate in a vertical plane parallel to the rod B. The lever H is provided with an arm a extending to the left, and an arm 1) extending to the right, of the pivot I. The arm a is of about the length of the rod B, and is bent at its end to form the vertically-extending portion H. A notch h is formed in the lower end of the portion H of the lever H.

S is a spring secured to an extension K from the block 0, and pressing upward because of its elasticity upon the free end of the arm I) of the lever H, thus pressing the end of the arm a downward. 1

E is a rod extending from the block 0 parallel to the rod B, then turning and extending beneath the free end of the arm, a of the lever H.

G is a plate secured to the end of the rod E, and provided with a spur G, adapted to extend into the notch h.

F is an elastic strip extending parallel to the rod B upon the side of said rod which is toward the operator.

M is the lower end of the needle-bar.

L is a ring, and c a set-screw by which the needle is secured to the needle-bar. m is an arm extending from the ring L under the arm a of the lever H.

N is a stop by which the cloth is guided. The rod B extends through an aperture in the stop N, and said stop is adapted to be moved along said rod.

n is a set-screw by which the stop N is secured in the desired place upon the rod B.

The operation of the above-described device is as follows: The device is secured to the cloth-plate of the machine by a screw passing through a hole in the lug A, the arm B extending in a direction at right angles to the motion of the cloth in the machine, its free end coming just to the right of the needlebar. The ring L is adjusted to the needle-bar and secured in place by the set-screw c, at the same time securing the needle in place, the arm on extending under the arm a of the lever H. The block 0 is now moved along the rod B until the end H of the lever H is at a distance to the left of the needle-bar corresponding to the width of tuck desired. The

stop N is moved to the right a distance corresponding to the width of the tuck. The cloth is guided by its right hand edge coming against the face of the stop N. The cloth passes under the strip F and overthe rod E and spur G. Then the machine is being operated to sew one tuck, the armaof the lever H is raised by the arm on with the ascending needle-bar and allowed to descend when the needle-bar descends, the spring S pressing the end H of said lever down upon the cloth, bending the cloth by means of the notch h over the spur G to mark the next tuck.

In the above-described device the markingarm descends with a comparatively moderate velocity, so that while the momentum of the arm assists to form the crease, a yielding pressure of the marker upon the cloth is secured and a quick blow is avoided, so that the cloth is not liable to be perforated.

Very little power is required to operate the above-described device, as the power expended by the sewing-machine in raising the marking-arm is stored up in the actuating-spring, and is again restored to the sewing-machine by the descending arm.

' Having fully described my invention, What I claim, and desire to secure by Letters Patent, is-

The combination of the securing-lug A, a rod B, extending from said lug, the block extend into the notch 7L, substantially as shown 25 and described.

JAMES E. BRADLEY". Witnesses:

JOSIAH B. Fnos'r, CHAS. M. Fnos'r.