US406696A

US406696A - Thomas s

Info

Publication number: US406696A
Authority: US
Publication date: 1889-07-09
Anticipated expiration: 1906-07-09

Description

(No Model.)

T.S. BARWIS.

HAND GAR. No. 406,696. Patented July 9, 1889'.V

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UNITED STATES PATENT OFFICE.

THOMAS S. BARVVIS, OF ARTHABASKAVILLE, QUEBEC, CANADA.

HAN D-CAR.

SPECIFICATION formingpart of Letters Patent No. 406,696, dated July 9, 1889.

Application filed October 23,

To all whom it may concern:

Be it known that I, THOMAS S. BARWIS, of Arthabaskaville, in the Province of Quebec and Dominion of Canada, have invented a new and useful Improvement in Hand-Cars, of which the following is a full, clear, and eX- act description.

` The invention will be first described, and then specifically pointed out in the claim.

Reference is to be had to t-he accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a side view of a hand-car, in longitudinal section, on the line Fig. 2, showing the invention applied thereto. Fig. 2 is a plan View of the hand-car upside down with invention applied, and Fig. 3 is a detail of the driving mechanism with parts in section and broken away.

For the purpose of illustrating the manner of applyingr the invention it is shown, in connection with a hand-car of the ordinary type, constructed with a platform 1, having a'slot 2, through which projects to a suitable height.

above platform l a vertical long-armed hand operatinglever 3, the slot 2 being sufficiently long to permit the lever 3 to have a vibrating movement lengthwise of the slot 2. The lower end of lever 3 is pivoted to the crank 4 of a double-crank shaft 5, extending across the slot 2 and mounted in bearings 6', bolted to the under side of platform 1. To the lever 3,

adjacent to its lower end, is pivoted one end of a horizontally-vibrating short-armed lever 6, the other end `of lever 6 being pivoted in a bracket 7, bolted' tothe under side of platform l, adjacent to an end of slot 2. The end of slot 2 just referred to is beveled or inclined, as at 8, so as to permit the end of lever 6 adjacent to bracket 7 to swing up into slot 4 in an inclined direction in the upward movement of lever G with lever 3. It will thus be seen that the lever 6 serves as avibrating lever support and guide for the lever 3.

The .relative arrangement and the pivotal 1888- Serial No. 288,907. (No model.)

connection of the 'levers 6 and 3 are such that a line drawn through the lever 6 and a line equal to the distance from the pivotal point of lever 6 with lever 3 to arpoint located in the axis of the crank-shaft 5, each form the side of a square when the crank 4 is in its lowest depending position. By this means the lever 3 and crank 4 are never left on the dead-center. With the long-armed lever 3, connected at its lower end to crank 4 and having the supporting guideflever 6, asimple arrangement of parts is provided, by means of which the crank-shaft 5 may be easily and Vrapidly caused to turn a great number of revolutions, and power obtained to drive an axle 9 of a pair of Wheels 10 of a hand-car by a large wheel 11, engaging apinion12,mounted on the aXle'Q.

The hand-car may be effectively and rapidly driven by one or more persons on the platform 1 operating the lever 3 by a handle 13 at its upper end. The lever 3 is moved back and forth with a risingand-falling movement in the slot 2, and communicates, through crank-shaft 5,' gear-wheel 1l, and pinion 12,

vmotion to the aXle 9.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The combination, with the handcar having the slot 2 in it-s platform and a transverse crank-shaft journaled under the platform between the front and rear axles, of the up-