US45837A - Improvement in treadles for operating machinery - Google Patents

Description

UNITED STATES PATEN JOHN J. KIMBALL, OF NAPERVILLE, ILLINOIS.

IMPROVEMENT IN TREADLES FOR OPERATING MACHINERY.

To all whom it may concern.-

Be it known that I, JOHN J KIMBALL, of Naperville, in the county of Du Page and State of Illinois, have invented a new and Improved Treadle for Operating Machinery; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to 'make and use the saine, reference being had to the accompanying drawings, forming partof this specification, in which- Figure l is a perspective view of my invention; Fig. 2, an enlarged vertical section of the saine, taken in the line w x, Fig. l.

Similar letters of reference indicate like parts.

This invention consists in constructing a treadle in such a manner that the Weight of the operator will be made subservient in actuating it, muscular force not being expended nor required in any great degree.

A represents a shaft, which is provided with two cranks, B B, having reverse positions, and O O are pitnnen, which are connected to them.

D represents the treadle, which is formed of a square piece of plank ofsuitable dimensions, hung centrally on a shaft, a, the journals of which are fitted in bearings on or in a proper base, E, or on the iiooring which supports the vice to be driven.

The pitmen are connected to the treadle D one at each side and near one end of it-and in the treadle at eachside of it there are iitted foot-pieces E E, which, like the treadle, are hung centrally on shafts b b, the journals of the shafts, b, having their bearings in the treadle, and allowed to turn freely therein. The lower parts of the foot-pieces E E below the shafts b b are heavier than the upper parts, so that the foot-pieces will have a tendency to keep themselves in ahorizontal position,

irrespective of the position or niovelnent of the treadle D.

The pitnien O O are of equal length, and when the treadle D is in a horizontal position the two cranks B B will also be in a horizontal position, projecting from opposite sides ot' the shaft A.

From the above description, it will be seen that thel operator by standing upon the footpieces E E, and inclining his body first to the right and then to the left, will actuate the treadle D, the foot-pieces E E always conforming to the position of the feet ofthe operator-that is to say, their upper surfaces always being in a horizontal position, as will be understood by referring to Fig. 2, in which an inclined position of the treadle is shown in red with the upper surfaces of the foot-pieces in a horizontal position. Thus it will be seen that in operating the treadle but little or no inuscular force requires to be exerted upon it, the weight of the body being sufficient for the purpose, and it will further be -seen that the cranks cannot catch upon their centers, and the treadles when left in a horizontal position can always be started at once without first turning the crank-shaft by hand, as is frequently required with the single crank and treadle.

I claim as new and desire to secure by Letters Patent- The treadle D, hung centrally on a shaft, a, provided with two pitinen, C C, which are connected to reverse cranks B B on the shaft A, in combination with the foot-pieces E E, hung on shafts b b, which are fitted in the treadle, and all arranged to operate substantially as and for the purpose specified.

JOHN J. KIMBALL.

Witnesses:

ED'MUND E. PAGE, AJS. HARROUN.

Images