US624644A - Davis thompson - Google Patents

Description

No. 624,644. I Patented May 9, I899. 3T. JULIAN GIBABDEAU, V. .D. THUMPSUN & R. L. BEAL.

-$EW|NG MACHINE ATTACHMENT.

7 (Application filed Dec. 97, 1898.)

(No Model.)

witmaazo ST. JULIAN GIRARDEAU, VIRGINIUS DAVIS THOMPSON,

PATENT OFFICE.

AND ROBERT LYLES BEAL, .OF GALVESTON, TEXAS.

SEWING-MACHINE ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 624,644, dated May 9, 1899.

Application filed December 27, 1898. Serial No. 700,477. (No model.)

To call whom, it 77710,]! concern:

Be it known that we, ST. JULIAN GIRARDEAU, VIRGINIUS DAVIS THOMPSON, and ROBERT LYLES BEAL, citizens of the United States, residing at Galveston, in the county of Galveston and State of Texas, have invented a new and useful Sewing-Machine Attachment, of which the following is a specification.

machines, and more particularly to a motive power for operating the said machine, the ob.- ject being to provide an exceedingly cheap, simple, and efficient hand-power which can be used independent of orin conjunction with the foot-treadle.

Another object of the invention is to provide a mechanism which can be applied to any of the sewing-machines now in use and can be adjusted to suit the various sizes of machines.

With these objects in view our invention consists, essentially, of a clamp adapted to be attached to the table of the sewing-machine, an adj ustable lever pivoted to said clamp, and a pitman adapted to be connected to the drivewheel of the machine and adjustably connected with the lever, the reciprocation of said lever causing the rotation of the drive-Wheel.

The invention consists also in certain details of construction and novelties of combination, all of which will be fully described hereinafter and pointed out in the claim.

In the drawings forming part of this specification, Figure 1 is a view showing the end elevation of a machine provided with our attachment. Fig. 2 is a detail View of the operating-lever. Fig. 3 is a detail View of the clamp to which said lever is pivoted. Fig. 4 is a sectional view of said clamp, and Fig. 5 is a sectional view on the line 5 f Fig. 2.

In carrying out our invention we employ a clamp-bracket A, essentially in the shape of an open rectangle and having a set-screw A working through one member thereof, the inner faces of the members and the set-screw being covered with rubber or other suitable material A the surface of which is roughened in order to bind tightly upon the edge of the machine-table when said bracket is clamped thereto, as shown in Fig. 1. The 50 bracket'is slotted at one corner, as shown at A ,'and upon each side of said slot are the pivot-lugs A between which is inserted the bearing portion B formed upon the end of the section B of the lever B, and the saidle- This invention relates generally to sewingver is pivotally connected to the bracket by means a pin or bolt B passing through the lugs and thebearing B upon the end of the section B. The sections B and B of the lever are adjustable upon each other, 6o as shown in Figs. 1 and 2, the section B having a loop B formed integral therewith, which embraces the section B and has a set-screw B passing therethrough to engage the section B. This section B is also formed with a loop B integral therewith and which embraces the section B and has a set-screw B passing therethrough to bear upon the section B. By this means the sections B and B can be adjusted longitudinally upon each other in order to make the lever long or short,

as desired. The lever is provided with a handle C, and adjacent thereto is slotted longi tudinally, as shown at D, said longitudinally slotted portion h'avingaseries of perforations D, through which a pivot-pin is adapted to be passed for the purpose of connecting the pitman E thereto, the opposite end of said pitman being connected to the drive-wheel F,

as most clearly shown in Fig. 1. By working the lever up'and down the drive-wheel is operated through the medium of the pitman,and in this manner the machine can be operated by hand instead of foot power, andthis mechanism can be used either independent of or in 8 5 conjunction with the ordinary foot-treadle. By having the lever adjustable and also pro-' viding for the adjustment of the pitman we are enabled to apply and operate our pitman upon any of the various machines now in use. 0

Having thus fully described our invention, what we claim as new,'and desire to secure by Letters Patent of the United States, is-- A sewing-machine attachment, comprising a bracket adapted to be secured to the table be adj ustably secured in the said slotted porof the machine, alever pivoted to said bracket, tion, substantially as shown and described. IO

said lever being composed of two sections ad- ST. JULIAN G-IRARDEAU.

justable upon each other, each section hav- VIRGINIUS DAVIS THOMPSON. 5 ing a loop adapted to embrace the other sec- ROBERT LYLES BEAL.

tion, and a set-screw passing through each WVitnesses:

loop, the outer section of said lever being slot- I. LOVENBERG,

ted longitudinally and a pitman adapted to GAMILLO RIEDRIOH.

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