USRE3048E - Improvement in lawn-mowers - Google Patents

Description

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SAMUEL W. SEARS, OF NEW YORK, N. Y.

IMPROVEMENT IN LAWN-MOWERS.

Specification forming part of Letters Patent No. 76,831, dated April 14, 1868; Reissue No. 3,048, dated July 21, 1868.

To all whom it may concern:

Beit known that I, SAMUEL W. SEARS, of the city ot' New York, in the county and State of New York, have invented a new and Iniproved Hand Lawn-Mower 5 and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to understand and use the saine, reference being had to the accompanyin g drawings, forming part of this specification, in which- Figure 1 represents a sectional elevation of my improved hand-mowingmachine, cut in the plane ofthe line me, Fig. 2. Fig. 2 represents aplan. Fig. Srepresents an enlarged detached view of the gearing.

Similar letters indicate the same parts in all the drawings.

The object of this invention is to furnish a cheap and convenient instrument for mowing grass smoothly on lawns and flower'- bed borders with a reciprocating cutterbar, to be Worked by hand. Only a strong and skillful person can handle a scythe o'r sickle, as the work is hard and ditlicult, but with my improved hand-mowera delicate person, and even a lady, can mow a lawn without fatigue, and more neatly than it can be donc with a scythe.

This improvement consists in a light frame mounted upon wheels or a roller, having a cutter-bar in front, to be worked either by pushing from behind or turning a crank, as hereinafter fully described.

The frame A is of a narrow and light rectangular form, of wood or iron, the sides being connected by a cross -piece, B, in which are hung wheels or rollers U C large enough to raise the rear of the frame high enough for pushing the machine by a person conveniently.

The cutter-bar D is placed in the front part ot" the frame, and is designed to be about tifteen inches long, usually, but may be varied in its length, and is constructed with teeth or a serrated edge and `guards in the usual way for horse-power mowing-machines. The cntter-bar is actuated by a long shaft, E, hung in one side of the frame, and connected with it by a cam or crank movement to give the required reciprocation, as shown clearly in Figs. l and 2.

On the upper end of the shaft E is a pinion, a, having long cogs to engage with a shifting gear-wheel, b, fixed on a sleeve or sliding hub, c, fitted upon a crank-shaft,d, one end of which is supported by the cross piece B, while the other end passes through a bearing in the rear side of the frame and has a crank, e, attached to it. The sleeve e also carries a bevel-wheel. f, that engages a bevel-wheel,f, placed on the side of the wheel or roller U, and concentric with it. When these bevel-Wheels are in gear the sleeve c turns upon the crank shat't d to give motion to the shaft E and work the cutter-bar D when the machine is propelled by pushing from behind; but the bevel-wheelsf f may be thrown out ot' gear by slipping the sleeve e up on the crank -shat't, andthe sleeve has a recess in it that receives a feather, s,Fig. 3, on the crank-shaft, tohold itfastand prevent its turning, in which position it is secured by a lockingbar, g, in order that it may turn with the crank-shaft when it is operated by the handcrank e. The locking-har g catches in a notch or against a shoulder bearing, h, to keep the sleeve from slipping from the feather s, as shown clearly in Figs. l and 3. When the sleeve c is thus locked upon the crank shaft e and the bevelwheelsf f' are out of gear, the cutterbar is then operated, while the machine remains stationary, by turning the crank e, in order to cut thegrass around a plant or in any desired spot.

My improved lawn -mower may thus be 0perated either when in motion by pushing it forward or when stationary by turning the crank, as desired.

Havingdescribed my invention, whatIcl-aini, and desire to secure by Letters Patent, is-

l. A lawn-mower so constructed that the cutter-bar may be operated eitherby a drivingwheel connection or by hand-power, substantially as and for the purposes herein described.

2. In a hand-mower, the combination of the roller or driver (J with the concentric gear f supporting the frame A, the crank-shaft d, the shifting sleeve-gear, the shaft E, and the reciprocating cutter bar D, constructed, arranged, and operating substantially as and for the purposes herein described.

SAM. WV. SEARS.

Witnesses:

J ULrUs R. PoMERoY, O. MAGDANIEL.

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