US1020099A - Throw-out device for reciprocating-shuttle sewing-machines. - Google Patents

Description

J. 0. HUFFMAN & E. J. LAIJPPBR. THROW-OUT DEVICE FOR REGIPROGATING.SHUTTLE SEWING MACHINES.

APPLICATION FILED APR. 25, 1910.

1,020,099, Patented Mar. 12, 1912.

Wi'fn eased" coLuMmA PLANOGRAPH C0,. WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

JOHN O. HUFFMAN AND EMIL J. LAUFFER, OF CLEVELAND, OHIO, ASSIGNORS TO THE WHITE SEWING MACHINE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

THROW-OUT DEVICE FOR RECIPROCATING-SHUTTLE SEWING-MACHINES.

Specification of Letters Patent.

Patented Mar. 12, 1912.

Application filed April 25, 1910. Serial No. 557,366.

To all whom it may concern:

Be it known that we, JOHN O. HUFFMAN and EMIL J. LAUFFnn, citizens of the United States, and residents of Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Throw-Out Devices for ReciprocatingShuttle Sewing-Machines, of which the following is a full, clear, and exact deseription.

This invention is an improvement in reciprocating shuttle sewing machines,the object being to provide simple and novel means by which the operator of a sewing machine may quickly and easily remove the shuttle from the shuttle carrier, whether the latter be at the front or rear end of its path.

The invention includes as its principal novel feature a movable wedge carried by the shuttle carrier, and normally held in an inoperative position by a spring, but adapted to be moved by the operator so as to introduce the wedge beneath the rear end of the shuttle and thereby lift it so far out of its seat on the shuttle carrier that the operator may easily take hold of the lifted end and remove the shuttle entirely.

The invention is illustrated in the accompanying drawings, in which- Figure 1 is a plan View of a part of asewing machine in which the invention is embodied. This view shows the left side of the bed plate of the sewing machine head, when the two slide plates have been removed, in order to show the shuttle carrier and shuttle which operate beneath the bed and for most part beneath the slide plates and needle plate. Fig. 2 is a magnified sectional view in the plane indicated by line 2-2 on Fig. 1. Fig. 3 is a perspective view of the shuttle throw-out.

Referring to the parts by letters, A represents the bed plate of a sewing machine head.

13 represents the needle plate which is of the ordinary construction.

The parts described are, or may be of familiar form, and attention is called to the needle plate, not for the purpose of indicating that there is any novelty about it, but because it is a necessary part of the machine which has heretofore made it ditlicult to remove the shuttle from the carrier when these parts are at their rear ends of their paths of travel. This is because at that time the point of the shuttle is beneath the needle plate.

D represents the shuttle carrier. It is, in the form shown, an arm pivoted to the under side of thebed on a vertical pivot and extending the proper distance toward the left. The means for oscillating this shuttle carrier forward and backward upon its pivot are not shown, because any means may be employed for this purpose. The left end of the shuttle carrier serves as the seat for the shuttle C. This shuttle is of substantially the usual form; and, when resting upon the shuttle carrier, its left side will be adapted to contact with the arc-shaped wall a of the shuttle race on the under side of the bed plate. The shuttle carrier has a vertical shoulder (Z for engaging the flat rear end of the shuttle, and there is also a little lug (Z on the shuttle carrier to prevent the rear end of the shuttle from swinging from the wall a. The carrier also has a finger (Z for engagement with the conical front end of the shuttle.

The features of construction specified are not novel, and may be varied to any reasonable extent as long as they are capable of holding the shuttle in the proper operative manner on the shuttle carrier as it reciprocates baclnvard and forward.

Pivoted upon the shuttle carrier near its rear end, but just to the right of the shuttle, is a bell crank lever E, the rearwardly extended arm of which is beveled downward, as at e, to form what is in effect a wedge. The other arm of the lever has an upwardly bent finger piece a, by means of which the operator may move it. A rat-trap spring G, which engages a downwardly turned finger e on this lever, holds it in an inoperative position and against a stop shoulder (Z on the shuttle carrier. Then the operator wishes to throw out the shuttle, she places her finger on the upturned end 6 of the wedge lever E and swings it in opposition to the. spring. Thereby the wedge-shaped end of this lever is introduced beneath the rear end of the shuttle, which is thereby lifted so that the operator may easily take hold of it and remove it from the carrier. It will be noted in Fig. 1 that this wedge lever may operate with the results stated, Whether the shuttle is at the front end of its path, as shown in full lines, or at the rear end of its path, as shown by dotted lines.

Although the throw-out device is shown in the form of a lever having a wedgeshaped end, it is apparent that the lever characteristic of this device is not essential to the invention, broadly considered, al-

though it constitutes a very simple and convenient embodiment of the device. The essential characteristic of this device is that it is permanently mounted on the shuttle carrier, and is of wedge-shape, and capable of being designedly pushed beneath the rear end of the shuttle so as to lift it from its seat to a convenient point for taking hold of it.

Having described our invention, we claim:

1. The combination of a reciprocating shuttle carrier having a seat for a shuttle, with a shuttle throw-out device movably mounted upon said shuttle carrier and normally occupying a position to one side of and out of contact with the shuttle, said throw-out device having a wedge shaped end which when the throw-out device is moved from its normal position will pass beneath the rear end of the shuttle and lift the same.

2. The combination of a reciprocating shuttle carrier having a seat for the shuttle, with a shuttle throw-out device movably mounted upon said shuttle carrier, and having a wedge shaped end adapted to be moved beneath the rear end of the shoulder to lift the same, a spring to retract said throw-out device, and a stop to limit the spring induced movement of the throw-out device whereby said throw-out device normally occupies aposition to one side of and out of contact with a shuttle resting upon the shuttle seat.

3. The combination of a reciprocating shuttle carrier having a seat for a shuttle with a bell crank lever pivoted upon said carrier, one arm of the lever being formed as an inclined plane and adapted when moved to engage the underside of the shuttle with a wedging action to lift the to shuttle, the other arm being formed with means adapted to be grasped in operating the lever, and means normally holding the bell crank lever out of engagement with the shuttle.

In testimony whereof, we hereunto aflix our signatures in the presence of two witnesses.

JOHN O. HUFFMAN. EMIL J. LAUFFER. Witnesses:

H. R. SULLIVAN, E. L. THURSTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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