US407186A - Half to thomas a - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

H. H. FEFEL.

SEWING MACHINE.

No. 407,186. Patented July 16, 1889..

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(No Model.) 2 Sheets-Sheet 2.

H. H. FEFEL.

SEWING MAGHINE. I No. 407,186. v1:'znte11ted July 16, l889.-'

UNITED STATES PATENT OFFICE.

HENRY H. FEFEL, OE PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALE TO THOMAS A. PEARCE, OE SAME PLACE.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 407,186, dated July 16, 1889.

Application tiled August 30, 1888. Serial No. 284.115. (No model.)

To @ZZ whom it may concern:

13e it known that I, IIENRY II. FE'FEL, a citizen of the United States, residing in the city and county of Pliiladelphia, State of Pennsylvania, have invented a new and useful Improvement in Sewing-Machines, which improvement is fully set :forth in the following specification and accompanying drawings.

My invention consists of improvements in sewing-machines, as hereinafter set forth an d claimed.

Figure 1 represents a side elevation of a sewing-machine embodying my invention. Fig. 2 represents a top plan view of a portion thereof. Fig. 3 represents an end elevation thereof, to clearly illustrate the location of the hook and looper with relation to the needle. Fig. l represents adetail view of the hook, the main or driving shaft, and the mechanism for revolving the hook and shaft. Fig. 5 represents an enlarged view of the 'stitch formed by my machine.

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

Referring to the drawings, A designates the bed-plate; B, the curved upright or gooseneck rising therefrom; C, the spring presserfoot carried by the upright; I), the clothplate; E, the vibrating lever; F, the needlebar; G, the needle carried thereby; Il, the link for operating the vibrating lever, and J the fly-wheel or driving-pulley.

The numeral l designates the main or driving shaft, which is mounted in the goose-neck or curved upright and carries a gear-wheel 2, meshing with a gear-wheel 3, the said gearwheel being mounted on a stud l, carried by a post or standard 5. rlhe said meshing gear-wheels 2 and f3 are of the same size. The drivin g-shaft at one end is bored out or socketed at (l, forming a sleeve or barrel, and in said sleeve is placed a shaft 7, carrying a hook S. On the hook-shaft, as it may be termed, is secured a gear-wheel l0, which meshes with a gear-wheel 10X, mounted on the stud l, and said gear-wheel l10X is of a diameter twice as great as that of the gear-wheel l0, in consequence of which the hook-shaft is revolved twice as rapidly as the drivingshaft, the purpose of which will appear. The feed-cam K is mounted on a sleeve K rotatable on the shaft 7 by means of the pinion 2 thereon, which meshes with the pinion 3X on the shaft 4. From this construction it will be observed that as the central gear-wheel lOX has a diameter twice as great as that of the wheel lO the hook-shaft is revolved twice as fast as the driving-shaft--orJ in other words, the hook revolves two to one of the drivingshaft, the purpose of which is to enable the hook to take the thread from the needle and looper, as will presently appear.

On the driving-shaft is secured a grooved or cam wheel ll, which operates against the lower end of the vertical take-up lever l2, having an arm 11) pivoted thereto and extending above the needle, and having an eye therein to allow the passage of the needlethread after it leaves the guide ll, as shown in Fig. l.

l0 designates the horizontal take-up lever for the looper, which is pivoted to a post or lug l?, and has its inner end in contact with the cam or grooved wheel, and has an eye in its outer end through which the looper-thread passes after leaving the guide 1S. From this construction' it is evident that the cam or grooved wheel acts iirst upon one of the takeup levers and then upon the other, so as to take up the thread from the needle and looper at the proper moment.

A bracket li) is provided for the looperspool, the thread of which passes through a guide 20 on the bracket, and from thence to the guide 1S.

2l designates an eccentric on the drivingshaft 22, a band encircling the saine, and having an arm or pitman 23, connected with the crank-shaft 2l. The latter is journaled in boxes or bearings 25, attached to the feedplate of the machine, and tothe outer or front end of the shaft is connected one end of the link 2e', connected to the lever 27, which is fulcrum ed on a stud 28 and carries the curved looper 29, having an eye through which the lthread passes. From this construction it is evident that the eccentric on the drivingshaft imparts rocking motion to the cra-nk- IOO shaft, in consequence of which the looper 29 is moved back and forth or given a sliding movement. u

.The operation is as follows: The drivingshaft is revolved andthe reciprocating-needle descends, carrying its thread a through the material and forming the loop h. NVhile the needle is descending the hook rotates and enters the loop formed thereby and spreads the same. The sliding looper approaches the revolving hook and passes through the needleloop, and the hook revolves in time to take t-he thread b from the looper and enchain it with the needle-thread. It will thus be seen that the hook irst takes the thread from the needle and spreads it, then takes the thread from the sliding looper and enchains it with the needle thread, the hook releasing the needle-thread at the desired time and the take-up mechanism for the needle-thread and looper operating to take up the said threads at the proper time.

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

l. In a sewingmachine, lhe combination, with the reciprocating needle, of the drivingshaft having a socket in one end, a shaft carrying the hook or looper litted in said socket, gearing on the driving and hook shafts, gearing meshing with said gearing for driving the hook and driving shafts at different speeds, and a sliding looper operating in conjunction with the needle and rotary hook or looper, substantially in the manner and for the purpose described.

2. In a sewing-machine, thc combination, with the reciprocating needle, of the drivingshaft having one end socketed, said shaft also carrying gearing, a hook shaft carrying a gear-wheel fitted in the socket of the drivingshaft, and gearing meshing with the gearing of the looper and driving-shaft for imparting different speeds thereto, substantially in the manner and for the purpose described.

3. In a sewing-machine, the combination, with the reciprocating needle, of a drivingshaft, a' hook-shaft having a journal-bearing in said driving-shaft, a stud parallel with said driving and hook shafts, meshing gearing on said driving and hook shafts and said stud, one of said gear-wheels on said stud being of twice the diameter of the meshing gear-wheel on the hook-shaft, substantially as and for the purpose set forth.

4. In a sewing-machine, the combination f of a reciprocating needle, a driving-shaft and a hook-shaft carrying gear-wheels, a stud carrying a gear-wheel of different diametertrom those on the driving-shaft and hook-shaft, gear-wheels on the stud meshing with the gearwheels on the driving and hook shafts, and a sliding looper operating in conjunction with the revolving looper and needle, substantially in the manner and for the purpose described.

5. In a sewing-machine, the combination of the driving-shaft carrying gear-wheels, a hook-shaft having a bearing in an end of said driving-shaft, a stud parallel with said shafts, meshing gearingon said shafts and stud, substantially as described, an eccentric on the driving-shaft, a band encircling the same and having an arm, a crank-shaft, a link, and a pivoted lever carrying a curved looper at one end, substantially as and for the purpose set forth.

HENRY H. FEFEL. IVitnesses: A

JOHN A. VIEDERsHEIM, WM. N. Moons.

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