US156171A - Improvement in sewing-machines - Google Patents

Description

2 Sheets--Sheet 1.

E. MOREAU. Sewing-Machines.

Patented Oct. 20,1874.

N0.156,I7I.

2 Sheets--Sheet 2.

E. MUBEAU.

Sewing-Machines. No, 156,171. Patented Oct. 20,1874.

THE GRAPH C CO.PKOIB'LITH-38I\ I PARK FLACi, MY.

UNITED STATES PATENT Orrrc n EUGENE MOREAU, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO MOREAU MACHINE MANUFACTURING COMPANY, OF SAME PLACE.

' IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 156,17 1, dated October 20, 1874; application filed July 23, 1874.

To all whom it may concern:

' Be it known that I, EUGENE MOREAU, of the city and county of San Francisco and State of California, have invented certain Improvements in Sewing-Machines, of which the following is a specification:

The nature of my invention consists in the construction and arrangement of the parts of a sewing-machine, as more fully hereinafter set forth and claimed.

I shall now describe my invention more in detail with the use of the accompanying drawings.

Figure 1 is a section and side elevation of the machine complete. Fig. 2 is a plan view from the top, showing the relative position of the shuttle, shuttle-race, hooks, and cams. Fig. 3 is a back view of the hook-bearing frame and the cam, which gives it a lateral motion. Fig. 4 is a vertical section through the axis of the shuttle-race. Fig. 5 is a vertical section through the longitudinal axis of the machine, showing another position of the hooks. Fig. 6 is a front view of the hooks before going down. Fig. 7 is a front view of the hooks after having drawn the thread down. Fig. 8 is a view of the shuttle, showing the tension. Fig. 9 is a view of the shuttle, showing its connection with the shuttle-driver.

A is the frame of the sewing-machine; B, the driving-shaft. C is the needle-bar; D, the shuttle, sliding over the rods 01 cl. D is the shuttle-driver, moving in grooves provided for it in the parallel frames D D. To the shaft B are fastened the driving-pulley J, the needle-arm cam C, the cam G moving the T- frame G, the cam E actuating the hook E, the face-plate H to which is attached the shuttle-pitman H, and the feed apparatus I. The shuttle D, Figs. 4, 8, 9, is made in two parts. One, m, the shell, is cylindrical; the other, a, is the cover, and of a hemispherical shape. The shell m is provided with a central tube, t, extending the full length of the shuttle. The shuttle is closed, after placing the spool b over the tube t, by screwing the cover it on the tube 15. The thread goes from the spool b out of the shell on by the hole 0; thence under the tension-spring S, and through the other hole, 0. To the back of the shuttle are fastened two prongs, p 19, Fig. 9, connecting the shuttle with the prong p of the shuttledriver D. The prong p overlaps p", and the other, 19, merely prevents the shuttle from turning around and escaping from the shuttle-driver. Play enough is left in the fitting of the parts 17 p p to allow the free exit of the needlethread from under the shuttle. The two rods d d are the race or guides of the shuttle. They are in the same line, and have space enough left between their points to allow the play of the hooks and needle-thread. One of the rods, d, is fastened to the bed of the machine, and the other, 01, is provided with a thread and thumb-screw, 01, so as to be easily removed to take out the shuttle. The shuttle-driver D, guided in the grooves in D D, is connected with the crank-pin H on the face-plate H by pitman H. The hook E, Figs. 1 and 5, oscillates in a plane perpendicular to the shuttlerace, and is riveted to the stem 0 fitted in the bearings .90 00. These bearings .70 and 00 are fastened to a sort of T-frame, G, Figs. 1, 2, and the frame G is held against the bed A in three places, 6, c, c. The bearings c 0 guide its motion in a line parallel to the race, and the other bearing, 6', holds it against the bed without interfering with its lateral motion, which is given by the cam G acting on the roll and stand G. The hook F is fastened to the hook E by the joint f. The extremity f of hook F is provided with a roll, and kept in contact with the guide f by means of spiral spring f fastened to the T-frame G.

We see that the hooks can take two motions-one lateral with the T-frame G, and the other vertical, by the action of cam E and guide f. As the hook E is moving laterally with the frame G, the groove in the cam G is made very deep, and the roll 6 very long, to enable it to keep in the groove.

p and p are the cast-off pins; one, 19 is fastened to the frame D, and the other, 11, to the bed A.

Now, if we look at the machine at that particular time of the revolution immediately after the needle has thrown out the loop, as shown in Figs. 1, 2, and 4, we see that both hooks are pressed together as one, and stand up on the right of the needle. The shaft rcvolving, the cam G gives to the frame G, and consequently to the hooks, a lateral motion. They enter the loop about a quarter of an inch, Fig. 6, and immediately after the cam E drives the hook E downward, leading the hook F with it; but the movement of the hook F is made nearly straight across and perpendicular to the race by the action of the guide f and spring f on the roll f, and when the action of the cam E ceases the hooks are in the position seen in Figs. 5 and 7, holding the needle-thread in a triangular shape in front of the shuttle, and very near the cast-off pins 19 and p. The shuttle goes through the loop, and at the same time begins the'reciprocatin g lateral motion of the hooks; but the thread bearing against the cast-off pins 19 and 12, Figs. 5 and 7 cannot follow the movement of the hooks, and consequently slips over them, and is cast off at the same time that the back of the shuttle passes in front of the needle. Now the needle goes upward, the thread is taken up, and the shuttle comes back. Before it reaches the end of the stroke the hooks are moving upward, and when the shuttle is ready to come again the-two hooks are together again on the right of the needle, and about to enter the loop, as shown before.

It is also evident that a greater number of hooks could be used to effect the same purpurpose, but two have been found suflicient for good practical work. Nevertheless, if I found it necessary to throw the shuttle through the loop without touching it at all, I would then use three books instead of two, and it would then hold the thread in the shape of a square instead of a. triangle.

By the foregoing construction of parts the loop which is thrown down by the needle is spread, so as to allow the shuttle to pass through it, thereby permitting the use (for the shuttle-threadlof the ordiii'aryspools of thread just as they. are sold iiitheniia'rket.

Having thus described the machine and the action of its parts, what I claim as my invention is 1. The combination of the hooks E F, cams E G, frame G, and guide'f, substantially as and for the purpose described.

2. The combination of the hooks E F, cams E G, guide f, and spring f with the shuttle D, the pin 1 on the shuttle-frame, and the pin 19 on the under side of the bed-plates A, all substantially as set forth.

3. The combination of the shuttle, having hollow tube through its center, the rods (1 d separated from each other in the center, the hooks E F, cams-E G, frame G, guide f, and spring f, all substantially as set forth.

Dated July 14, 1874.

EUGENE MOREAU.

Witnesses:

W. B. ISAAOS, ISAAC JEssUP.

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