US26586A - Improvement in sewing-machines - Google Patents

Description

Patented Dlecf.1-2"7,4 1859.l

J. HARRISON, J'r. SEWING MACHINE track of the needle.

. through the holes.

-UNITED Sfrzrrns lPATENT OFFICE.

'.mivrnsfnnnnison; Jn., or-Nnw Youn,

I'MPRovEMEN-r IAN` srawlNca-MAcHiNEs.`

Specificationforming partof Letters Patent No. 26,586, datedDeeember :27, 1859.

. State of New York, have invented certain new and useful ImprovementsinlSewing-Machines;

y and l do hereby declare that the following is a y full and exact description thereof, reference bci-ng hadto the accompanying drawings, and to the letters and marks thereon. e

The drawings forming part of this specification show, by Figure l, a side View of a sewing f machine having my improvements; by Fig. .2, an end view of a part of a machine below the table; and by Fig. 3, a view of a shuttle with my improvements.

As the machine thus shown isin many respects like numerous machines where the eyepointed needle with one thread and a shuttle with another thread form the stitch, I will limit "the description of construction and operation to such parts as constitute my improve ments and suclt other parts as are so intimately or immediately connected therewith as may be necessary to give description' of in order to fully understand these improvements.

Underneath the tablea there is attached to the side b of the frame of the machine a disk, c, which, by ascrew, d, is held to the frame, and by another screw, e, is so attached to the frame that when the screw d is taken out the disk may be rotated on the screw e. Holes f, near the-'periphery of the disk, allow of the diskbeing held by the screw d, so that any one of the grooves or races g cut in from the edge to the center radially will be in line with the The drawings show four such tracks orraces. The number may be increased until a considerable portion of the disk is marked by them. These races or tracks differin width and depth, the desig'n of them being to guide the needle, and hence they are ot' different size to accommodate the differentsized needles.

Passing through the legs It of the frame is a rod, i, having an elongated'head, j, exterior to the one leg. This rod z' may be moved By seizing the head j it may be drawn out, the inner face of it being removed from against the leg. When so drawn out, a coiled spring, k, is compressed, which, when the head is let go, ltends to bring the inner face of the head against and in contact with the leg. An arm, l, extends upward i out of use.

from the head, passing through a slit in crank#` pin m of disk'fn, which disk is rotated by power ,derived from the main shaft.` i

",lo the upper end of arm lis aixed the shut-` tle4case h, the inner face of which is open, so that when the shuttle is placed therein its inner face travels upon and over` the face of the disk e, crossing the` track of the needle. By this arrangement of means l dispense with the usual shuttle-case and lessen much the ex pense of constructing machines. It will readilybe seen how the rotating of disk n gives to the arm Z the vibratory motion necessary to carry the shuttlethrough its regularmotions. It will also readily be seen how by drawing y out the head j of rod 'i that the shuttle may be turned downward, and temporarily be put The heel o of the shuttlecase is not a continuation of the shell of the case proper, but is a distinct piece, and is connected to the body of the case by abar orrod,

p, which is hinged or pivoted to the body at the point where the letter p is placed -on Fig. l of the drawings. Vhen in place at the end of the case, a hinged rod or catch, q, holds it.

By turning outward the catch p the heel can also be turned outward and the shuttle be ta; i

ken out of or put into the ease. i

Fig. 3 shows the shuttler, containing the spools. A ridge, t, with several holes, l1L, ex

tends up above the roof of the shuttle, which 'ridge strengthensthe upper edge of the shutas allows of holes for the passage ofthe thread.

Between this ridge and" the spool apart of the shuttle is removed to form a space, o, for the` thread to traverse from either end of the spool or bobbin. This space allows the thread'ee la hrgad through two or more of the holes in the ridge, more or less interruption may be given to the passage of the thread, and thus a greater or less degree of slack exists.

In the upper end of the needle-bar 1v, I insert a lever-bar, which is forced outward by a spring in the recess of the needle-bar, and is forced inward by its edge coming in contact with the guide-bar y on the descent of the nee dle-bar. The pin upon which this lever-bar plays is marked z. The thread, `on itsway fromthe spool to the needle, passes through a from the spool, while, bypassing the hole on one side of the needle-bar, then through fa.- hole in the lever-bar, and, lastly, through another hole in the needle-bar. The operation of this lever-bar will ez1siljY be seen to be to keep the thread taut until the eye f' of the needle enters the cloth, and then to leave the'thread sleek;

` Having thus set out my invention, what I claim as new, and' desire to secure by Letters Patent, isf- Y 1. The rotary needleguide disk c, constructed and operated in they manner and for the Dur-v pose above described.

' 2. The arrangement of the following devices JAS. HARRISON, J R.

VVitnesses: H. C. BANKS, JAS. NARINE.

Images