US353970A - rosenthal - Google Patents

Description

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S.A.R0SENTHAL.

POCKET SEWING MACHINE. ,970. Patented Dee. vrl, 1886.

(Model.)

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(Model.)

S. vA. ROSENTHAL.

POCKET SEWING MACHINE.

No. 353,970. Patented Deo. 7, 1.886.-

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UNITED STATES ATENT Prien.

SALLY ADOLPH ROSENTHAL, OF BERLIN, GERMANY.

POCKET sEwiNe-MACHiNE.

SPECIFICATION forming part of Letters Patent No. 353,970, dated December 7, 1886.

Application filed March 20, 1852.6. Serial No. 196.015. (Model.) Patented in France October 17, 1.885, No. 171,723; in Belgium November 17, 1885, Xo. 6,713; in England December 17, 1885, No. 15,513; in Austria-Hungary April 25, 1881i, No. 45,838, and No.

13,872, and in Germany May 13, 1886, No. 36,617.

To @ZZ whom, it may concern:

Be it known that I, SALLY ADoLPI-I Rosmi- THL, of Berlin, in the Kingdom ot' Prussia, Germany, have invented a certain new and useful Pocket Sewing-Machine, (for which Letters Patent have been obtained as follows: Germany, No. 36,617, granted May 13, 1886; Austria-Hungary, No. 45.838 and No. 13,872, granted April 25, 1886; France, No. 171,723, dated October 17. 1885; Belgium, No. 86.713, datedNovember17,1885; England. No. 15.513, dated December 17, 1885,) of which the l'ollowing is a specification.

The object I have in view is to produce a cheap, simple sewing machine of compact structure, which can easily be carried in a pocket and readily tixcd to a table when required.

The machine whichlhave devised isa lockstitch shuttle sewing-machine having a top feed. the feeder being also the presser or presser-foot. The active instrunientalities by which the formation of the stitch is effected are a verticallyreciprocating needle, an oscillatorythreadguide level', and a reciprocatory or vibratingr shuttle, all of which instrumentalities, together with the combined feeder and presser, derive movement directly 'from the needle bar or slide. rlhis bar is thrown up by a spring and is depressed by hand, for which purpose it is provided with a head or button on its upper end. It extends both above and below the cloth-plate and engages directly the shuttle carrier or lever, so that the latter is caused to vibrate or oscillate by and during the vertical reciprocatory movement ofthe bar. There is no wheel or rotating device in any portion of the structure, the number of parts is reduced toa minimum, and the greatest possible compactness consistent with efficiency is secured.

The nature of my invention and the manner in which the same is or may be carried into effect will be readily understood by reference to the accompanying drawings, in which- Figure 1 is a perspective View ot' a sewingmachine made in accordance with my invention, with the parts in the position when the needle is up. Fig. 2 is a frontelevation of the saine. Fig, 3 is a like elevation with the parts in the position when the needle is down, with the shuttle-lever partly broken away. Fig. 4 is a vertical section from front to rcar of the machine.

Eis the bracket-frame which supports thel various instrumcntalities. 'It is provided at its lower end with a jaw and clamping-screw by which it may be secured to a table, and has also the plate t', which forms the clothplate of the machine. ln thc bracket (and extending nearly thc whole length of the same) is a vertical slot, x, in which is mounted and adapted to slide the needle-bar a. provided at its upper end with a lbiwvardlyprojecting boss or head, d, to which the needle is secured by a clamp in the usual way. Above the head (Z the needle-bar is prolonged into a bar or rod, o', which passes up through the overhanging shelf b at the top ot' the bracket, and the tube on which is mounted the hobbin J, for the upper or needle thread. The rod a is surinounted by a button, L, between which and the shelfb is contined a spiral spring. f, encircling the rod and tending to throw the needle-bar up. Underneath the clotlrplatc. at the point where the needle-slot is formed, is the hanging guardplate Z, which is parallel with the trout edge of the clothvplate, and has in its inner face a vertical groove, 0. to receive the needle. The latter is thus protected t'roni st rikingor coming in contat-t with the shuttle and the pin that moves the shuttle lever or carrier.

The shuttle S rests in a basket or cradle, K, which is carried upon thc rear face, and at or near the upper end of a. lever, H, pivoted to a boss, c, on the lower end ot' the bracketframe E. rlhe plate l extends between the lever H and the shuttle cradle or basket K, and the side of the basket next to the plate is open, so thatthe shuttletherein will be in contact with the inner face of the plato, which thus forms in effect the needle-face ot' a shuttle-race. The shuttle-lever is actuated to throw or move the shuttle at tlie proper time by means of a horizontal pin, 7L, on the lower end of the needle-bar, which projects forward into a longitudinal slot, g, in the shuttle-lever, said slot being a cani-slot of such form as to irnpart tothe shuttle-lever movements appropriate to cause the shuttle to properly co- IOO operate with the needle in making the stitch. The shuttleV cradle or basket K is fixed tothe back of the shut-tle-lever by a bracket-arm, m, and has a hinged back which is made selt`- closing by a spring. p.

Pivoted to the side of the bracket E is the slotted thread-guide lever F, which acts in some sort as a take-up, being provided with a threadeye at its outer end. This lever is operated directly from the needle-bar a by means of a pin, c. which projects laterally from the bar into the slot in the lever. Thread from the bobbin J passes first through the tension q, (of ordinary or suitable construction.) thence through the guide hole sin the frontjof the shelf I), thence through the eyelet ron bracket E, thence through the thread-eye at the outer end of the lever F, and thence to the needle. The under or shuttle thread is guided from the bobbin n through the hole t in the wall of the shuttle in the usual way.

The instrumentalities for effecting the feed of the goods consists of a feeder, G, arranged above and to have Contact with the clothplate, and to act not only as a feeder but as a presser also. It consists of a laterally-vibratv ing lever horizontally pivoted at about its vmiddle to the front of the bracketframe E,

provided with a foot, G', which bears with spring or yielding pressure upon the goods, and with a cam projection, Q at each end, so formed as to be struck by the needle-head d as it rises and descends, each of said projections being alternately brought into the pathof the head d, so as to secure the requisite to-and-fro movement of the feeder. Pins z on the bracket-frame limit the extent of said movement.

The mode of operation of the machine is obvious, from the foregoing description, to one skilled in the art to which this invention pertains. It is sufficient to say that when the needle-bar is depressed from the position shown in Fig. 2 to that shown in Fig. 3 the needle descends through the cloth, the thread-guide lever F is lowered to permit this movement and to. give slack thread, the presser and feeder is (at or near the conclusion of the stitch) forced outwardly, and the shuttlelever 5o is moved to a point where the shuttle Will be in position on its return to pass through the loop of needle-thread, all this being accomplished by the direct action of the needlebar upon the instrument-alities named. When pressure is released from the needlebar it at once springs backY to place. The moment it starts, the shuttle is thrown across the raceplate Z far enough to take the needle'thread loop before the needle rises too far, (there being at this time slack enough to throw out a proper loop of needlethread,) and as the needle-bar continues to move upward the return movement of the .shuttlelever also continues, the lever F swings up, and lastly, as the needle is about terminating its upward stroke the needle-head strikes they upper cam projection on the feeder and presser and causes the foot of the same to advance, and in so doing to press upon and feed forward the goods in position for the next stitch.

Having now described my invention and the manner in which the same is or may be carried into effect, what I claim, and desire to secure by Letters Patent, is

l. The combination, with the bracket-frame and its cloth-plate, of the needle-bar arranged to slide vertically in said frame and extending both above and below the cloth-plate, and the pivoted shuttle-lever having a pin-and-slot connection with said needle-bar, substantially as and t'or the purposes hereinbefore set forth.

2. The combination. withthe bracketframe and its cloth-plate,'and the needlebar sliding vertically therein, of the pivoted thread-lever F, the cloth presser and feed lever G, provided with cam project-ions, and the shuttle-lever H, all of these instrumentalities connected to and operated directly by the needle-bar, as and for the purposes herein before set forth.

3. The pivoted shuttle-lever and the shuttle y basket or cradle attached thereto, in combinationvwith the 'bracket-frame, the cloth-plate,

the vertically-sliding needle-'bar provided with a pin which enters a slot in the shuttlelever, and the guard-plate Z, under the arrangement and for operation as set forth.

SALLY ADOLPH ROSENTHAL. Witnesses:

LoUIs NVoLFsBERG, ALFRED COHN.

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