US747284A - Wax-thread sewing-machine. - Google Patents

Description

PATENTED DEC. 15, 1903.

I. N. WHIPPLE. WAX THREAD SEWING MACHINE.

APPLICATION FILED OCT. 31, 1901.

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No. 747,284. PATENTEDDEG. 15, 1903.

A J. N. WHIPPLE, WAX THREAD SEWING MACHINE.

APPLICATION FILED 001231, 1901.

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PATENTED DEG.715, 1903.

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U ITED STATES Patented December 15, 1903.

I ATnNT FFICE" JOEL N. WHIPPLE, OF ST. LOUIS, MISSOURI, ASSIGNOR TO LANDIS MACHINE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

WAX-TH READ SEWING-MACHINE.

SPECIFICATION formingpart of Letters Patent No. 747,284, dated December 15, 1903.

Application filed October 31, 1901. Serial No. 80,625. (No model.)

To all whom it may concern.-

Be it known that I, JOEL N. WHIPPLE, a citizen ofthe United States, residing at the city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Wax-Thread Sewing-Machines, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, forming part of this specification, in which- Figure l is a vertical sectional view. Fig. 2 is a plan view showing the driving-shaft and its associate mechanism. Fig. 3 is a top plan viewillustrating particularly the thread-carrier and the thread-hook, the work-table of the machine being removed. Figs. 4 and 5 are views of the general character of Fig. 3, illustrating the thread-carrier and the threadhook in different positions; and Figs. 6, 7,

. and 8 are fragmentary details illustrating different positions of said thread-carrier and thread-hook with relation to the needle.

This invention relates to a new and useful improvementin sewing-machines, and relates particularly to the stitch-forming mechanism, the primary object being to construct a simple and cheap machine in which the thread is conveniently presented to the needle.

The invention consists in the various matters hereinafter described and claimed.

In the accompanying drawings the invention is illustrated as applied to a wax-thread sewing-machine.

In said drawings, 1 indicates the frame of the machine, upon which is arranged a bedplate 10, a box-housing 11 being supported upon said frame. The main shaft 12 is journaled in bearings provided in the end walls of said housing, and said shaft has mounted thereon the belt and fly-wheels 13 and the various cams from which the operativemechanism of the machineis driven. An apertured plate or work-table 22 is secured at the upper front edge of the boX-housing, and mounted in bearings at opposite ends of this work-table is a shaft 23, which forms a pivotal support for the needle-carrier 24. A lever 30, pivoted to the rear of the machine, is provided with a cam-roll which cooperates with the cam 16,

and the forward end of said lever is connected by the link 29 with said needle-carrier 24, whereby rotation of the said shaft 12 serves to reciprocate the barbed needle 25 through the work-plate in a manner which will be apparent.

Above the box-housing 10 is a head-frame 21, whose forward portion carries the shuttle 60, said shuttle being of the rotary type and having a hook 69 and also being adapted to receive a bobbin 67 in a well-understood man- Driving-pinions 61 and 62, journaled upon said head-frame, mesh with the toothed periphery of said shuttle and also with a mas- 65 ter-gear 63, mounted upon a shaft journaled upon said head-frame, while a pitman 66 has one end in connection with a disk 64 upon said shaft, which carries said master-gear 63, and its other end having an eye in the form 70 of an eccentric-strap, which engages the cam or eccentric 15 upon said main shaft 12. R0- tation of said main shaft thus serves to rotate the shuttle.

The construction of the shuttle-actuating mechanism just referred to will be found fully described in my Patent No. 730,848, dated June 19, 1903.

Pivotally mounted under the worlctable 22 is what may be termed the lower threadbook 37, said thread-hook being formed on the inner periphery of a segmental skeleton frame. This frame is rocked or oscillated through the medium of a link 38, connected to one member of a bell-crank lever 39, the other member of said lever carrying a roller entering a peripheral groove of the cam 14, mounted upon said main shaft 12. A lower thread -carrier 40 is preferably slotted (see Fig. 3) in order that it may be guided in its 0 movement, and said thread-carrier is connected to one member of a bell-crank lever 41, whose other member is provided with a roller fitting in a peripheral cam-groove of the cam 20, mountedupon said main shaft 12.

What may be termed the upper thread of the machine is carried by the bobbin 67 in a well-understood manner, while the lower thread passes through a thread-eye in the free end of the thread-carrier 40 and thence uproo wardly into the work, as clearly shown in Fig. 6. In the formation of a stitch, when .returns to normal position.

to receive the lower thread for the purpose of drawing the same through the work as the needle backs out of the latter, the said lower thread-carrier tO and the thread-hook 37 are in the positions illustrated in Figs. 3 and 6- that is to say, the lower thread-carrier 40 is in advance of the needle and upon one side of the same, and the thread-hook 37 is at the limit of its throwin one direction and is upon the same side of the needle as that upon which the eye of the lower thread-carrier rests. Upon rotation of the main shaft the thread-hook is moved in what may be termed a forward direction, said hook engaging the thread between thethread-carrier 40 and the work and carrying said thread in a loop across the needle, as shown in Fig. 7, the positions of the thread-hook and thread-carrier being illustrated in Figs. 4 and 7. The upper thread of this loop is the thread which comes from the opening in the work, while the lower thread of said loop is the thread which comes from the thread-carrying arm 40. After this horizontal loop is formed the thread-carrying arm 40 moves from the position shown in Fig. 4 inwardly to the position shown in Fig. 5, so that the lower thread of said horizontal loop is laid over the barb of the needle. The needle now rises with the lower thread, and simultaneously with this movement the oscillating hook 37 is rocked backwardly to release the thread, and the thread-carrier 40 also The needle continuing to rise, the loop is drawn through the work, as indicated by full lines in Fig. 8, and this loop is then caught by the shuttle-hook 69 and the stitch is completed in a well-understood manner.

I am aware that minor changes in the construction, arrangement, and combination of the several parts of my device can be made and substituted for those herein shown and described without in the least departing from the nature and principle of my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

In a sewing-machine, the combination with a barbed needle and its operating mechanism, of a reciprocatory thread-carrier movable across the line of the needle at the side of the same, a pivoted skeleton hook-frame into whose opening the needle is adapted to move, a thread-hook upon the inner side of said frame, means for rocking said skeleton frame back and forth upon its pivot to carry the said thread-hook from one side to the other of said needle and across the face of the same provided with the barb, and means for reciprocating said thread-guide at the side of said needle; substantially as described.

In testimony whereof I hereunto affix my signature, in the presence of two witnesses, this 29th day of October, 1901.

JOEL N. WHIPPLE.

Witnesses:

GEORGE BAKEWELL, G. A. PENNINGTON.

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