US271112A

US271112A - William l

Info

Publication number: US271112A
Authority: US
Publication date: 1883-01-23
Anticipated expiration: 1900-01-23

Description

(No Model.)

W. L. PERRY.

TREADLE.

No. 271,112. Patented Jan.23, 1883.

Wu'brwsse/s:

UNITED STATES PATENT OFFICE.

\VILLIAM LQPERRY, LOWELL, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND HODGETTS F. WORRALL.

TREADLE.

SPECIFICATION forming part of Letters Patent No. 271,112, dated January 23, 1883. Application filed November 15, 1882. (No model.)

T all whom it may concern:

Be it known that I, WILLIAM L. PERRY, of Lowell, in the county of Middlesex and State of Massachusetts, have invented certain Improvements in Treadles, of which the following is a specification. This invention relates to treadles for apply- 1ng power to sewing-machines or other light mechanism; and it has for its object to pro vide a treadle which will enable the position and movements of the feet of the operator to be changed from time to time, thus avoiding the weariness and physical injury resulting from a long continuance of one set of movements ofthe feet.

To this end theinvention consists in a treadle composed of a frame having two foot-supportin g bars at the opposite sides of an openspace, said bars being at opposite sides of the pivots of the treadle, and adapted to permit the feet of the operator to be placed in several different positions while working the treadle, as I will now proceed to describe and claim.

Of the accompanying drawings, forming a z 5 part of this specification, Figure 1 represents a perspective view of a treadle embodying my invention. Figs. 2 and 3 represent top views of the same, showing-differentpositions which the operators feet may assume in working the treadle. Fig. 4. represents a transverse section of the treadle.

The same letters of reference indicate the same parts in all the figures.

In the drawings, A represents my improved 3 5 treadle, which is composed of an open frame having front and rear bars or foot-supporting portions,2 3, connected by transverse end bars, and separated by a space of sufficient width to enable one end of the operators foot to rest 40 on the floor, between the bars 2 3, and the other end to bear on one of said bars.

B B represent the trunnions or pivots on which the treadle rocks, said pivots being substantially parallel with the bars 2 3, and mid- 4 5 way between the same, so that when the treadle is rocked the bars 2 3 will rise and fall to the same extent. The pivots are of course journaled in suitable hearings in the frame of the machine, or independently thereof, as may be desired.

It will be seen that the described construction enables the feet to assume several different positions inworking the treadle. For example, the toe of the right foot may rest on the bar 3 and the heel on the floor, between the

bars

2 and 3, while the heel of the other foot rests on the bar 2 and the toe on the floor, as shown in Figs. 2 and 4.; or the positions of the feet may be reversed, as shown in Fig. 3, the toe of the left foot resting on the floor and the heel of the right on the bar 2; or the toe of the right foot may rest on the bar 3 and the toe of the left foot on the bar 2, both heels resting on the floor; or the toe of the left foot may rest on the bar 3 and the toe of the right foot on the bar 2. Ample provision is thus made for the relief of the operator by frequently changing the position and movements of the feet, and the operation is made much easier and less fatiguing than when each foot has to remain in the same relation to the treadle and make the same movements hour after hour.

I prefer to provide rests or plates 1). D D D on the bars 2 3 for the better accommodation or hearing of the operators feet. Said 7 rests are pivoted upon the bars 2 3, so that they can conform to the position of the sole of the operators foot, suitable stops being provided to preventsaid rests from rotating downwardly to the under side of the bars 2 3.

If desired, the bars 2 3 may be provided respectively with a fixed heel-rest, F, and afixed toe-rest, G, as shown in Figs. 1, 2, and 3, to enable the operator to work the treadle by a simultaneous movement of the heel and toe. U

Power may be communicated from the treadle through a connecting-rod or pitman, or through flexible straps, to a clutch motion. in the former case the treadle should have an arm, I, at one side to connect with the pitman, andin c the latter case a similar arm may be provided at each side for the connection of the straps to the treadle.

It is found that when one end of the foot is supported on the floor and the foot is oscil- 5 lated up and down from said fixed point the 2 I 27Lll2 muscular exertion is much less fatiguing and injurious to the operator than when the foot is entirely supported on the treadle.

I claim 1. The improved treadle composed of the open frame having centrally-arranged pivots, and foot-supporting bars located at opposite sides of said pivots, said bars being separated by a space of sufficient size to receive a part of the operators foot, each bar being adapted to furnish a bearing for either foot, while the other foot bears onthe other bar, whereby numerous changesin the position and movements of the feet are permitted, asset forth.

2. The improved treadle composed of the 15 open frame having centrally-arranged pivots, and foot-supporting bars located at opposite sides of said pivots, each bar having foot rests or plates pivoted thereto, as set forth.

In testimony whereof I have signed my name 2o to this specification, in the presence of two subscribing witnesses, this 13th day ofNovember, 1882.

WILLIAM L. PERRY;

Witnesses:

- JOHN R. WILSON,

O. F. BROWN.