US253477A - Eeaper and mower - Google Patents

Description

(ModeL) 2 Sheets-Sheet 1 P; JAHAZARD.

- :RBAPER AND MOWER. 1%. 253,477. Patented Feb. 7,1882.

(7 m WL M N. PETERS. Phvioumogrlphen Washington. I16

(ModeL) 2 Sheets-Sheet 2. I

F.J. HAZARD.

- BEAPER AND MOWER. v No. 253,477. Patented Feb. 7,1882.

WITNESSES j l/VVE/VTUR I *c jK -1 UNITE STATES PATENT OFFICE.

FREDERICK J. HAZARD,OF BELLEVILLE, ONTARIO,-GANADA, ASSIGNOR OF ONE-HALF TO THOMAS FULLER, OF SAME PLACE.

REAPER AND MOWER.

SPECIFICATION forming part of Letters Patent No. 253,477, dated February '7, 1882.

Application filed December 10, 1880. (ModeL) Patented in Canada November 15, 1880.

Toall whom it may concern Be it known that I, FREDERICK JAMES HAZARD, a subject of Her Majesty the Queen of Great Britain, residing at Belleville. county of Hastings, in the Province of Ontario and Dominion of Canada, have invented a certain new and useful Improvement in Reaping and Mowing Machines; and I do hereby declare that the following is a clear and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the two sheets of drawings hereto annexed,

which-form a part of this specification, and in which Figure 1 is a plan view of so much of a mow ing-machine as is necessary to illustrate my invention. Fig. 2 is a vertical sectional view through the line as w in Fig. 1; and Fig.3, Sheet 2, is an enlarged view of a section of the periphery of the grooved driving-wheel with its pair of friction-rollers.

Similar letters of reference indicate corresponding parts in all the figures.

My invention relates to the mechanism for imparting a reciprocating motion to the sicklebar of a reaping or mowing machine, and more especially to that class of mechanism in which a drive or motor wheel provided with a peripherical undulated groove engages one or more friction-rollersat the end of 'a rockshaft, the other end of which carries the crank or wrist pin which connects with the pitman head.

My improvement consists in the combination, with the grooved drive-wheel and with the rock-shaft, of a pair of tapering frictionrollers arranged in contiguity to one another upon the end of the rock-shaft, so that the iongitudinal axis of this, if continued, would intersect the periphery of both the rollers through a line drawn between their centers.

In thedrawings,AAare therunning-wheels, B the axle, and U a frame mounted upon the axle, which carries the working parts of the machine.

D is the driving-wheel, which is journaled loosely upon axle B, with which it may be made to rotate by means of a suitably-arranged clutch mechanism, K, provided with a treadle or foot-lever, L. i

' O is the tongue, and M represents the shoe.

The periphery of the drive-wheel D has an undulating groove or channel, (I, with alternating rounded points or shoulders a. (See Fig. 3.)

Upon frame 0, in a line with the groove d, is affixed a cylindrical box or bearing, 0, for the rock-shaft G, at the inner end of which is a cross-head, F, carrying the rollers E E. By reference to Figs. 2 and 3 of the drawings it will be seen that these rollers are mounted upon head F in contiguity to one another, so that the axis of shaft G, if continued in the direction of the drive-wheel, would intersect the inner peripheries of both rollers across a line connecting their centers,or at the point marked 2 in Fig. 3. The advantage of this specific construction and arrangement is that alljerking or pounding motion of the rollers in the groove is avoided, the throw or lateral movement of the rollers is reduced to a minimum, and the points or shoulders to are passed without undue friction, because at the precise moment when one of the rollers-as the bottom roller shown in Fig. 3-is about to strike and pass the shoulder a next above, the upper roller will not quite have arrived at the shoulder next above it, the rounded apex of which is not reached until the lower '80 roller shall have passed its point or shoulder, so that the shaftGr will oscillate smoothly and evenly at all times. At no point is there any play between the rollers and the groove within which they work; but their motion is absolutely even and uniform, huggin g closely both the undulating sides of the groove or channel in which they run.

The. head of the pitman J, which connects with and imparts motion to the sickle-bar N, is pivoted upon a crank or wrist pin, H, at the outer end of rock-shaft G, as shown in the drawings.

Having thus described my invention, I do not claim broadly the combination of the grooved 5 drive-wheel and rock-shaft provided with a cross-head carrying two friction-rollers which work in the groove of the drive-wheel; but

What I claim as my improvement, and derock-shaft-,ifproduoed,shall he coineidentwith 1o sire to secure by Letters Patent of the United the peripheries of both rollers across a line States, isdrawn between their centers, as shown and The combination ofv the drive-wheel D, havspecified, for thepurpose set forth.

5 ing the peripherical undulating groove 01, with rounded shoulders a, horizontal rook-shaft G, FREDERICK JAMES HAZARD having eross'heacl F, and a pair of rollers, E Witnesses:

E, journaled upon said cross-head in contigu- LOUIS ()URTIs,

ity to one another, so that the axis of the JOHN D. EVANS.

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