US284065A

US284065A - Poueths to fbeeman lillibbidge

Info

Publication number: US284065A
Authority: US
Publication date: 1883-08-28
Anticipated expiration: 1900-08-28

Description

2-Sheets-Shet 1.

(No Model.) Y r N D. H. HOGAN.

SEWING MACHINE.

Patented Aug. 28, 1883.

PIE. 5.

INVENTUR:

m0 Model.)

. 2 SheetsSheet 2. D. H. HOGAN.

SEWING. MACHINE.

Patented Aug. 28, 1883 m, U. m WW WITNESSES;

ATTY

N. PETERS. Phawunm hw. Wiihinglon. D. C.

UNITED, ST TES PATENT OFErcE.

DANIEL H. EoeAN, or CEDAR RAPIDS, IOWA, ASSIGNOR or THREE- ronnrns TO FREEMAN LILLIBnIneE, OF sAME rLAoE.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 284,065, dated August 28, 1883, Application filed February 18, 1882. (No model.)

To aZZ whom it may concern.-

Be it known that I, DANIEL H. RoeAN, a citizen of the United States, residing at Cedar Rapids, in the county of Linn and State of Iowa, have invented a new and useful Improvement in Sewing-Machines, of which the following is a specification.

This invention relates to the feeding mechanism, and to the parts immediately connected therewith, all of which will be hereinafter more fully described.

In the accompanying drawings, Figure 1 is an isometrical representation of a sewing-machine embodying my invention, in which portions are broken away to more clearly show the working parts. Fig. 2 is a front end elevation of the machine as shown in Fig. 1, in which the face-plate of the overhanging arm is omitted. Fig. 3 is an isometrical representation of the forward end of the base of the machine. Fig. 4. is a front elevation of Fig. 3, with front elevation of the overhanging arm added, in which the faceplate isomitted. Fig. 5 shows the inner face of the lower end portion of the face-plate, with stationary or non-moving cloth-foot fixed thereto. Fig. 6 is a vertical section of the feed-adjusting mechanism on dotted line w; and Fig. 7 isa rear side elevation of the frontend of the machine, having the base portion in section on dotted line y.

In the figures, A represents the base-plate of a sewing-machine, B the standard, and C the overhanging arm, all of which are substantially the same as like parts to be found in sewing-machines now in use. These parts may be produced in any of the usual or known forms of such parts, with such changes as will best fit them to support the working parts of the machine; or they may be produced in any other known form adapted to the purpose intended.

The forward end of the bed-plate is provided with a yielding cloth-plate, D, capable of alimited vertical movement. Of this yielding cloth-plate two forms are shown in the drawings, one of which is represented in Figs. 1 and 2. This form of yielding cloth-plate is capable bf a horizontal or parallel vertical movement, being supported in suitable guideways. At Figs. 3 and 4 this yielding clothplate is represented hinged to the bed-plate,

and capable of a limited vertical movement in the arc of a circle. These forms, however, in their essential features, are substantially the same, differing, mainly, in their mechanical application. This cloth-plate may be produced from any suitable material and of any suitable conformation and dimensions, and it is supported in position on the bed-plate and guided in its vertical movement by means of a vertical guide-bar, a, depending from its lower side, supported in a suitable guideway, I), in the bed-plate, near its upper end, and its lower end is supported in a tubular guideway, c, screw-threaded into a foot-support, (I, fixed to the depending forward end portion of the bed plate.

At 6 is represented a spiral spring encircling the lower portion of the guide-bar a, between the upper end of the tubular screwthreaded guide 0 and a pin, h, which is passed transversely through the guide-bar. The action of this spring operates to render the clothplate elastic and hold it elevated. The lifting and holding force of this spring can be regulated by means of the screw-threaded tubular support, which, when turned in, will compress the spring, and its withdrawal will permit it to expand, and thus vary the force of the spring to any extent within the limits of the device. The free end of the overhanging arm 0 is provided with a fixed portion, E, of a vertical supporting-head, rectangular in its outline form, and of suitable dimensions to receive the working parts requiring a support therein. Thisfixed portion E is recessed on its outer face, producing a chamber in which to receive the working parts.

At F is represented a driving-shaft extending lengthwise through the overhanging arm, having its forward end bearing in the fixed portion E of the head, and its rear end bear- At 70 is represented a fixed or non-moving Y cloth-holding foot, having its upper end poroperates to limit the upward movement of the yielding clotlrplate. At this point the yielding cloth-plate is suitably perforated to permit the needle to descend through it about midway of the length of the fixed foot, or at other suitable point relatively therewith.

At Z is represented a feed-bar having its lower end fitted in foot form, with its under face provided with saw-tooth corrugations to engage the cloth resting on the yielding clothplate.v This feed-bar extends upward in the supporting-head on the overhanging arm, and about midway of its length is pivoted at Z to the free end of 'a pitman-like lever, Z, which is placed crosswise of the supporting-head, to which its end port-i011, at Z, is pivoted at the side opposite the feed-bar, and in such relation to the cam-wheel that its upper edge shall engage the periphery thereof.

At m is represented a spring having such connection with the feed-bar and with thesupporting-head that its spring action will operate to hold the lever Z in contact with the periphery of the cam-wheel and its feedingfoot in its forward position.

At a is representedaslidebar fitted to slide endwise in a s1ot1ike recess, a, formed in the supportinghead. This slide is provided with a screw-threaded stud, a, which extends through a slot, 0, formed in the supportinghead, and its projecting screw-threaded end is provided with a thumb-nut, 0, by means of which the slide may be adjusted in its recess 'and clamped in position when adjusted. This slide-bar n is provided with a pivotstud, 0", which receives a feed-actuating lever, 19, centrally pivoted thereon in such relation to the cam-wheel that its lower end portion will engage the periphery thereof.

At 1) is represented a slotted stud fitted to receive the upper end of the feed-actuating.

lever 12, and to permit it to slide freely therein. This slotted stud p is pivoted to the upper end of the feed-bar Z.

From the foregoing it will be seen that if the cam-wheel is made to rotate in the direction indicated by the arrow placed thereon, by reason of its eccentric position on the shaft and. its irregular outlines, its enlarged portion, or that portion thereof farthest from its center of rotation, will first engage the pit man-like lever and depress the feed-bar, causing its corrugated foot to engage the cloth and depress the yielding cloth-plate to free the goods from the fixed holding-foot. The onward movement of the cam-wheel, by means of its enlarged concentric portion, will operate to hold the parts in their depressed pofeed-actuating lever with the upper end of the feed-bar, will have carried its foot portion and the goods with which it is in contact one step rearward. At this point the enlarged portion of the cam-wheel will have passed the pitman-like lever, and its onward movement will permit the feed-bar to rise by the actionof the lifting-spring until the parts have assumed their normal position, when the goods will be held between the fixed footand yielding cloth-plate in position to receive the needle to produce the stitch. This operation will be repeated in every revolution ofthecamwheel.

It will also be seen-that by means of the adjusting thumb screw the position of the slide-bar may be changed in the supportinghead, and such change of the position of the slide will change its pivotal connection with the actuating-lever relatively with the camwheel and with the slotted pivoted stud of the feed-bar, operating to increase the throw of 5 the feed-foot when the slide-bar is moved downward and lessen its throw when adjusted upward in the supporting-head, by which means the length of stitch may be varied to any extent within the limits of the device.

By the employment of the vertical moving elastic'or yielding cloth-plate I dispense with the movable cloth-holding foot usually employed, and an upward movement of the needle sufficient to carry its point slightly above the under surface of the fixed holding-foot will permit the cloth or goods, of whatever thickness it may be, to be withdrawn from the machine without endangering the needle.

In the foregoing description, in connection with the drawings, I have. only represented the parts of a sewing-machine necessary to illustrate the construction, application, and

working of my improvements; and the necessary parts to produce a complete sewing-machine not herein shown or described may be any of the usual parts and appliances common in like machines now in use that are adapted to and capable of use in connection with my improvements.

I am aware that feeding devices for sewing machines have heretofore been constructed having yielding adjustable cloth-plates and vertically-moving feed-bars pressing thereon. I therefore do not claim such construction, broadly.

WhatI claim, and desire to secure by Letters Patent, is-

1. The cloth-plate D, hinged to the bedplate, and capable of a limited vertical movement in the arc of a circle, substantially as described.

aaaoea 3 2. The combination, with a yielding clothpl ate capable of a limited vertical mo'vement, of a cloth-feeding bar capable of a downward movement to engage the goods and depress 5 the yielding cloth-plate to free the goods from the fixed lioldingfoot, substantially as and for the purpose hereinbefore set forth.

3. The combination, with a yielding clothplate capable of a limited vertical movement,

10 of a cloth-feeding foot capable of a downward and lateral movement to depress the yielding cloth-plate to free the goods from the fixed holding-foot, and to carry the goods over the face of the yielding cloth-plate at intervals I 5 to form the length of the stitch, substantially as and for the purposehereinbefore set forth.

4. In a sewing-machine, the hinged yield-