US288765A - Half to charles m - Google Patents

Description

sBWNG MACHINE.

N0 288,765. Patented Non 20, 1888.

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UNrrsn STATES PATENT Ormes.

JOSEPH BOND, JR., OFIIHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE HALF TO CHARLES M. SVAIN, OF SAME PLAGE. l

SEWING-MACHENE.

SPECI'IT'IELA'IDQN forming part of Letters Patent No.

Application filed February 16, 1883.

To @ZZ whom t iii/ay concern:

Be it known that I, J osnrir BOND, Jr., a citizen of the United States, and a resident of Philadelphia, "Pennsylvania, have invented certain Improvements in Sewing-Machines, of which the following is a specification.

My invention 'relates to certain improvements in the sewing-machine for which Letters Patent of the United States No. 245,771 were granted to my assignees on the 16th day of August, ISSI, the `present improvements relating, first, to the device employed for transmitting motion from the upper to the lower shaft of the machine; secondly, to the take-up devices, and, thirdly, to the construction of the spool-case and spool-case holder.

In the accompanying drawings, Figure l, Sheet 1, is a longitudinal section of the machine with my improvements; Fig. 2, a transverse section on the line l 2, Fig. l; Figs. 3 to 6, inclusive, Sheet 2, diagrams illustrating the improved take-up mechanism; Figs. 7 and 8, views of the improved spool-case, and Figs. 9, 10, and 11 views showing the relation of the spoolcase to the spool-case holder.

H is the hed of the machine; I I', the stationary arm of the same; J, the driving-shaft; K, the lower shaft for operating the feed-motion and loop-catcher b,- B, the needle-bar, and S the presser-bar, all of these parts being constructed and operating in the same manner as in the machine shown and described in the above-named patent.

Crank-pins on the shafts J and K are connected by a rod,| D, guided in a grooved plate, L, capable of moving transversely; but instead ofl securing this plate to a rod adapted to bearings in tubular studs on the opposite sides of the hoilow post I of the arm, as in the patented machine, I form on the back of the plate L a rib, j', which ts snugly, but so as to slide freely, in a groove, g', formed in a transverse bar, g, secured within said hollow post I', this form of guide being simpler and easier to fit up than the rod and tubes formerly used.

The devices for taking up the slack of the needle-thread, after the formation of the loop, arethe saine in principle as those formerly employed, and comprise the rotating disk L', with hook a, the thread-retainer o, and the eyes d, d', and d2; but in addition to these devices I 288,765, dated November 20, 18E-3.

(No model.)

now provide the disk L with a lug, m, which acts on that portion of the thread between the eyes d and d. This lug commences to act before the hook c has iinished taking up the thread, and serves to expedite this operation* that is to say, it insures the rapid taking up of the loop of needle-thread as soon as the latter has passed from the rear of the spoolcase. The lug m also serves to impart a certain degree of tension to the thread as the latter is drawn downward, owing to the action of the hook b in forming the next loop, the thread being thereby prevented from slipping off of the hook, and the formation of a perfect loop being insured. (See Figs. 3 to 6.)

The spool-case M which I now use is made of a single block, instead of being in the form of a two-part shell, as before, and in this block is formed aslot, h, for the reception of a spool, f'

N, which can turn freely on a pin, n, adapted to openings in the case, the head of this pin being grooved, so that it can be readily caught hold of and the pin withdrawn when it becomes necessary to remove the spool.

rIension is imparted to the thread by passing the same between the end of the spool-case and one of the heads of the spool, as before, a plate, p, bearing against the opposite head of the spool, and this plate being acted upon by a spring, s, under control of a screw, s', as shown in Fig. 8.

The spool-case holder comprises two plates, l? and P', the latter being movable, so as to permit of the insertion or removal of the spoolcase, which rests in an inclined position, as shown in Fig. ll. Each plate has in front a wing, w, and at the rear a wing, w, and the spool-case is confined longitudinally between these Wings, the distance between which, however,is slightly greater than the length of spoolcase contained between them, so that a slight longitudinal movement of the spool-case in the holder is permitted.

Before the formation of the loop the spoolcase rests in contact with the wings w, as shown in Fig. 9; but as soon as the loop is formed over the nose of the spool-case, the tension on the thread causes the said case to move backward in the holder until its rear end strikes the Wings x, a clear passage being thus formed for the thread between the front end of the ICO ` 1o order to permit the threading up of the spoolcase withont the necessity of passing the thread through these openings, I form in the casing three slots, z, z', and z2, each extending from one ofthe openings to the edge ofthe case, so I 5 that the thread can loe readily slipped into the openings.

I claim as my invention- 1. The combination of the shafts J and K, their crank-pins, and the connecting-rod D, 2o with the grooved guide L, having a rib, f, and

the bar g, having a "groove, g', for the reception of said rib, as set forth. 2. The combination of the take-np device comprising thread-guides and a rotating hook, a, with the lug or projection m, acting in con- 2 5 nection with said take-up hook, as set forth. 3. rIhe combination of the spool-case, the spool N, and the pivot-pin a,with the tension device comprising the plate p, spring s, and set-screw s', as set forth. 4. The combination of the spoolcase M with the holder having wings w and x, located near the opposite ends ofthe spoolcase, and adapted to hold the same in an inclined position, but permitting aslight longitudinal play, whereby 35 the loop is drawn over the spool-case without contact with the wings, as set forth.

5. The spool-case having openings y, y', and y2 and slots z, z', and z2, as set forth.

In testimony whereof Ihave signed my name 4o to this specification in the presence of two subscribing witnesses.

JOSEPH BOND, JR.

Vitnesses:

HARRY DRURY, HARRY SMITH.

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