US240323A

US240323A - meyers

Info

Publication number: US240323A
Authority: US
Publication date: 1881-04-19
Anticipated expiration: 1898-04-19

Description

V'(N0 2 Sheets-Sheet L N. MEYERS,

Sewing Machine.

No. 240,323. Patented April 19, I881.

Zzwzzix:

N.PEIERS, PHDYO-UTHQGRAPMER. WASHINGTON, D. C.

(No Model.) 2 Sheets-Sheet 2.

N. MEYERS. Sewing Machine.

Nd. 240,323. Patented April 19,1881.

UNITED STATES PATENT ()FFICE.

NICHOLAS MEYERS, OF BUFFALO, NEW YORK, ASSIGNOR TO JOHN M. FAIR, OF SAME PLACE.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 240,323, dated April 19, 1881.

Application filed October 2, 1880.

To all whom it may concern:

Be it known that I, NIoHoLAs Mavens, of the city of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Sewing-Machines, of which the following is a specification, reference being had to theaccompanying drawings.

This invention relates to certain improvements in sewing-machines, whereby the construction of the machine is simplified and its operation rendered more certain and convenient.

The first part of my invention consists of the peculiar construction of the feed mechanism, whereby motion is transmitted to the feeddog by means of a rock-shaft operating a slide which engages in an inclined slot in the feeddog, therebyavoidin g the use of alever for this purpose and the play incident thereto, and rendering the feed mechanism more reliablein its operation.

The second part of my invention consists of a peculiar mechanism, whereby the movement of the feed-dog is rendered adjustable, so as to enable the operator to increase or reduce the length of the stitch.

The third part of my invention consists of an adjustable holder secured to the head of the machine for attaching thereto the hemmer, ruffler, and other attachments which are employed in sewing, and which are usually attached to the bed of the machine.

The fourth part of my invention consists of a device ofpeculiar construction applied to the head of the machine for clamping the thread and preventingthe same from forming ff a loop below the needle before the needle enters the cloth.

The fifth part of my invention consists of a loosepulley of peculiar construction, which can be coupled to the needle-driving shaft or be rotated independently of the same at the desire of the operator.

In the accompanying drawings, consisting of two sheets, Figure l is a side elevation of a sewing-machine provided with my improvements. Fig. 2 is a bottom-plan view thereof. Fig. 3 is a cross -section in line .00 m, Fig. 1. Fig. 4is a longitudinal section of the loose pulley, on an enlarged scale; Fig. 5 is a rear (No model.)

elevation, and Fig. 6 is a front elevation, of the feed-dog and the parts whereby it is actuated. Fig. 7 is a vertical section in line 3 3 Fig. 5. Fig.8 is a perspective view of the slide. Fig. 9 is a front elevation of the head of the machine, showing the tension spring device. Fig. 10 is a vertical section of the same. Fig. 11 is a vertical section of the tension-spring device, on an enlarged scale. Fig. 12 is a horizontal section in. line 2 2, Fig. 10. Fig. 13 is a longitudinal sectional elevation of the arm which is secured to the head of the machine for carrying the attachments. Fig. 14 is a rear elevation of the same. an enlarged sectional view of the mechanism whereby the movement of the feed rock-shaft is regulated. Fig. 16 is a cross-section in line to w, Fig. 4.

Like letters of reference refer to like parts in the several figures.

A represents the bed plate, B the overhanging arm,O the head, and shaft, of the machine.

D is a vertical rock-lever, whereby motion is transmitted to the feed mechanism from the shaft 0. The rock-lever D is pivoted to the Fig. 15 is c the driving arm B at b and actuated by an eccentric, D,

mounted on the shaft 0 and engaging with the forked upper end of the lever D.

E represents a connecting-rod arranged underneath the bed-plate A, and attached to the lower end of the lever D by a ball-and-socket joint, 0.

F represents a horizontal rock-shaft, supported underneath the bed-plate A in bearin gs f is an arm, secured to the shaft F, nearits rear end, and projecting downwardly through a spherical bearing, g, which is clamped between the jaws e of the connecting-rod E. The bearing 9 slides on the arm f, so that by raising or lowering the forked end of the r0d E the bearing 9 can be adjusted toward or from the shaft F.

his a link, which is pivoted with its lower end between the jaws c of the rod E and with its upper end to a set-screw, H, which projects upward through the bed A, and is held by a screw-nut, h, arranged on the upper side of the plate A, in a bearing, k which prevents the nut from moving in the direction of the screw H, but permits the nut to rotate. By turning the nut in one or. the other direction the screw H is raised or lowered, whereby the bearing g is raised or lowered on the arm f, and the movement which is imparted to the rock-shaft is correspondingly increased or reduced,therebyincreasingorreducing the movement'of the feed-dog and the length of the stitch.

I represents the feed-dog, which is supported with its rear end upon apivot-pimi, and which is provided with an inclined slot, t".

J represents a sliding plate, which is guided between horizontal ways j, and provided with an inclined projection, j, which engages in the inclined slot 2" of the feed-dog. The slot 41 is made somewhat longer than the projection j, and the inclination of the slot '5 and of the projection j is so arranged that during the first part of the forward movement of the slide J the feed-dog will receive no forward movement, but will be simply raised by the operation of the inclines until the projection j comes in contact with the opposite end of the slot 6, when the forward movement of the feed-dog begins and continues until the slide J has completed its stroke. During the first part of the return movement of the slide J the feeddog is depressed by the inclines, without moving horizontally, until the projection j comes in contact with the opposite end of the slot 6, when the return movement of the feed-dog begins and continues until the slide J has completed its return movement.

1 represents an arm secured to the rockshaft 13 and engaging in a slot, 1, in the slide J, so as to transmit areciprocating movement to the slide. The shaft F being held in a hearing near the feed-dog, and the slide J being guided in horizontal ways, the actuating parts are firmly guided, and motion is imparted to the feed-dog without any play or dead movement in the parts, which is liable tooccur when the feed-dog is actuated by a rock-lever underneath the bed-plate. Both the horizontal and vertical movements are imparted to the feed-dog by this mechanism in a very simple manner.

K represents an arm, secured to the rear side of the head 0 of the machine, for supporting the ruffler, hemmer, and other like attachments.

which are usually employed in connection with sewing-machines. The arm K is secured to the head A by a set-screw, 7c, passing through a vertical elongated slot, in the upper end of the arm, so that the latter can be raised or lowered. The lower end of the arm K is provided with a horizontal bore or socket, L, in which the horizontal bar or rod L, to which the attachment is fastened, is secured by a set-screw, L The bar L carries at its forward end an arm, L which is provided with a clamp, L, for holding the attachment. The attachment is by this means secured to the head of the machine, and takes part in any vibrations which may occur in the arm B and the needle-bar and the needle supported thereby, and the attachment remains consequently always in the same relative position with the needle. The attachment is readily raised and lowered by adjusting the upper end of the arm K, and it can be placed at any desired angle with the bed-plate by adjusting the rod L in its socket.

m represents a hook, arranged on the face of the head of the machine, for pressing lightly against the thread with sufficient force to prevent the thread from being pushed down by the eye of the needle in its descent and form a loop below the needle before the needle en ters the cloth. The hook m is provided with a shank, m, which slides in an opening in the head of the machine.

n is a fine spring, secured to the rear side of the head, and attached with its free end to the shank m, so as to draw the latter and the hook m backward.

O is a bearing-plate, secured to the face of the head 0, and provided with a horizontal depression, 0,in which the hook at is arranged.

o is a thread-guide, secured to the head 0, above the bearing-plate O. The thread passes from the guide 0 over the upper part of the bearing-plate, then through the notch of the hook m, and thence over the lower'part of the bearing-plate to the eye of the needle. When the thread is drawn from the spool in forming a stitch, that portion of the thread which rests in the depression of the bearing plate is straightened, and the hook at is drawn forward and the thread drawn through the hook. As-soon asthe pull on the thread ceases the hook m springs back and holds the thread I taut while the needle descends with its eye sliding over the thread until the tension of the thread overcomes the friction created by the spring, when the thread is drawn down by the needle in the usual manner. This friction is very slight, and just sufficient to prevent the thread from bending or looping before the needle enters the cloth, but not so strong as to prevent the thread from being looped by the needle after it has penetrated the cloth. By this means the thread is held taut and prevented from formingloops, which would interfere with the proper operation of the needle in forming the stitches, while at the same time the thread is permitted to move off freely at the proper time. p

P represents the hand-wheel, which is secured to the end of the shaft 0 by means of an elongated hub or sleeve, 19; and Q is a grooved pulley, which turns loosely on the sleeve 19, between the hand-wheel and a collar, 19, secured to the sleeve. 7

R is a set-screw, which works in a threaded bore, 1", in the end of the shaft 0, and which bears with its head against a plate or washer, S, interposed between the head of the screwB and the end of the shaft 0. The washer S over- 7 laps the hub of the wheel 1?, and is provided with two horizontal pins or bolts, 8, extending through holes in the wheel P, and bearing against the pulley Q. Upon releasing the screw R the pulley Q can turn freely on the sleeve 11 without imparting motion to the shaft 0. Upon tightening the screw R the pins or bolts 8 are pressed against the pulley with snfficient force to impart the motion of the pulley by frictional contact to the wheel P and the shaft o on which it is mounted.

I claim as my invention- 1. The combination, with the rock-shaft F and means for actuating the same, of an arm, I, secured to the rock-shaft, a reciprocating slide, J, actuated by the arm Z, and provided with an inclined projection, j, and a feed-dog, I, provided with an inclined slot, 41, in which the projection j engages, substantially as set forth.

2. The combination, with the rock-lever D, receiving motion from the driving-shaft c, and the rock-shaft F, which actuates the feed-mechanism, of an arm, f, secured to the shaft F, connecting-rod E, attached to the lever D, and provided with a bearing, g, which slides on the arm f, and a set-screw and nut, H h, whereby the connecting-rod E can be raised and lowered, substantially as set forth.

3. The combination, with the head 0, of the arm K, adjustably secured thereto by its upper end, and provided at its lower end with a horizontal socket, L, and the bar L, held in the socket L by a set-screw, and provided with a clamp, L, for the reception of the attachment, substantially as set forth.

4. The combination, with the head 0, of the hook m m, spring a, and bearing-plate 0, provided with a depression, 0, substantially as set forth. 7

5. The combination, with the shaft 0, of the wheel P, secured thereto and provided with a sleeve, 10, the pulley Q, turning looselyon the sleeve 10, set-screw R, and washer S, provided with bolts 8, extending through the Wheel P and bearing against the loose pulley, substan- 4 5 tially as set forth.

NICHOLAS MEYERS. Witnesses:

JNo. J. BONNER, Enw. J. BRADY.