US225703A - Lawn-mower - Google Patents

Description

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F. HANS-0N.

vLawn-Mowers.

No. 225,703. Patented Mar. 23, 1880.

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No. 225,703. Patented Mar. 23,1880.

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N-PErERS. PHOTO-LITHOGRAPNER, WASHINGTON. D C.

'UNITED STATES PATENT CF1-Ica FREEMAN HANSON, OF HOLLIS, MAINE.

LAWN-MOWER.

SPECIFICATION forming part of Letters Patent No. 225,703, dated March 23, 1880.

Application filed July 18, 1879.

To all whom 'it may concern:

Be it known that I, FREEMAN HANsoN, of Hollis, in the county of York and State of Maine, have invented certain new and useful Improvements in Lawn-Mowers; and I do 4hereby declare that the following is a full,

clear, andexact 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 accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

My invention has relation to a certain improvement in that class of machines which are used for clipping and cutting off spires of grasses and stems of other vegetable growths on lawns, Src. The invention can also be readily accommodated to the cutting apparatus of mowing-machines and harvesters; and it consists of a roller provided with a series of V or curved shaped path-cams skillfully combined with reciprocating pivote-d cuttingfingers having cam-pins and a guard-plate for said cutting-lingers. The other and driving parts of the machine show suitable geared and running wheels for the purpose of operating and moving said machine, as will he hereinafter specifically set forth and claimed.

In the drawings, Figure 1 isa top plan with part of cap or cover broken out. Fig. 2 is a bottom plan. Figs. 3 and 4 are details of cntting-fingers.

In my invention, a represents the axle of the machine. Projecting forward and set at right angles to a are seen the side pieces, b b.

c c show the running-wheels revolving on the spindles ofthe axle. These runnin g-wheels are made either with creased or corrugated Arims or with points projecting from the rims for the purpose of increasing the tractive power of the running-wheels upon the lawn-sod.

Revolving freely on the axle-spindle inside of the running-wheel c is the gear-wheel d. This gear-wheel has upon its outside face the rack e. On the inside of the running-wheel c is located the spring-pawl f. The rack c and pawl f so act together as to lock the wheel c and gear-wheel d, thus transmitting revolution to the different operating parts of the machine when the operator is pushing it forward for the purpose of cutting grass. A reversal of the direction of the machine permits the running-wheels to turn without moving the operating parts, the pawl slipping freely over the rack.

The cam-roller appears at g, and revolves in bearings in the side pieces, b b. A series of V or curved shaped path-cams, h, are cut upon this roller. Rigidly attached to the cam-roller and meshing into the gear-wheel d is the gearwheel i. Running-wheels j 7' are placed at the extreme end of the side pieces, b b. The axle a has its under side provided with a series of chambers or recesses, arranged longitudinally and equidistant from each other, as shown at the points k 7c.

t represents the guard-plate with projecting points to protect the cutting-lingers. m m are cutting-fingers composed of the following parts: At one end is a cutting-edge, as shown at n. The other end is provided with a circular disk, o, and near the center of the cutter is placed the cam-pin 19.

In applying the cutting-fingers to the machine the disk o is fitted into the chamber lc. The cam-pin p is then slipped into the pathcam It of the roller g.

g shows a plate screwed to the under side of the axle, to hold the disks o o securely in the chambers 7c k. 1^ is the handle of the niachine,

s shows a cap or cover, of any suitable material. The office of the cap is to protect the operating parts of the machine and keep the cut-olf grass-spires from falling against and clogging the cam-movement.

The operation of my machine is as follows: The operator, having taken his position behind the machine, grasps the cross-bar of the handle and pushes the machine forward. .As soon as the machine begins to move over the ground thc pawl f on the revolving runningwheel c fits into the rack c on the gear-wheel d. Thus rotary motion is imparted to the gear-wheels d and 'i and the cam-roller g.

As before described, the cam-pins of the reciprocating pivoted cutting-fingers project into the path-cams.

It is obvious that as the cam-roller revolves the cam-pins will follow the paths cut in g, and the cutting-fingers, working on their pivotal points, will reciprocate from side to side IOO with great rapidity and cut 0E the spires of grass uniformly and evenly, and give to the lawn-sod a soft velvety appearance.

The rate of speed at Which the invention can be Worked is regulated by the movements of the operator and the formation of the pathcams.

By the above-described method of construction and operation I am enabled toproduce an article of commerce of the class to which this invention relates which shall be simple in its mechanical parts, inexpensive as to cost, practical in its operations, and especially easy and light running when in use.

I am aware that heretofore in lawn-mowers and like devices a cutting-knife having a pivoted disk at its rear end arranged to lit into a support or recess has been used; also, cam- FREEMAN HANSON Witnesses:

ELBRIDGE GERRY, J r., HERBERT G. BRIGGs.

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