US806259A - Mower. - Google Patents

Description

msfiizfiim'ss. PATENTED 1130.5, I905.

G. D. & J. H. JOHNSON.

MOWER.

APPLICATION FILED HOV. 25,1903.

UNITED STATES PATENT OFFICE.

GEORGE DOAN JOHNSON AND JAooB HENRYJOHNSOMOF HUNTSVILLE,

. CANADA.

MOWER.

Speeification'o f Letters Patent.

Patented. Dec. 5, 1905.

To aZZ whom it may concern:.

' Be itknown that we, GEORGE DoAN J oHN- trict of Muskoka, in the Province of Ontario,

Canada, have invented certain new and use-- ful Improvements in Mowers, of which the following is a specification.

Our invention relates to improvements in mowers; and the object of the invention is,

. first, to devise a simple,cheap, and durable for raising the finger-bar which will relieve the driverof themachine to a great extent of the weight of the bar, in raisivrfig'l will be more convenient to operate, and

same, and whic will also support'the major portion of the weight of the finger-bar, so.

that it will rest lightly on the ground and thereby the draft be decreased. To carry out these objects, we have constructed and arranged our mower in detail as hereinafter moreparticularly explained.

- Figure 1 is a perspective view 'of the mower showing the parts involved in our invention, portions being broken away for the'sake of clearness. Fig. 2 is a front elevation ofthe finger-bar, showing the connection of the driving means to the knife-bar. I view showing a portion of the lifting lever and quadrant from the side opposite to that shown in Fig. 1. Fig. 4is a perspective view of the cam. Fig. 5 is a section of the cam, showing the form of cam and roller.

In the drawings like characters of reference indicate correspondin parts in each figures A is the axle, and the wheels.

C is the swinging frame, through which the axle extends and which is substantially triangular in form, extending at one side substantially parallelly with the lane of the wheel to the rear of the fingerar D.

L E is the tongue, whichis secured on a suitallow of the bar to fall so radually as not to rack the Fig. 3 is a' able bracket 6, pivotally connected tothe f .frame 0. soN, merchant, and JAooB HENRY J OHNSON, builder, of the town of Huntsville, in the disfin F is the shoe, to which the inner end of the ger-bar is secured.

'c is a boss formed at the front apex of the frame 0, and c is a pivot-pin which extends through the boss 0 and the bracket f at the rear of the shoe 4 v G is the knife-bar, having the usual heel g at the inner end.

H is a lever, which is pivoted on the bolt 72,, extendingupwardly fromthe boss cion the frame 0.

C. is the rearward extension-frame of the frame 0, which extends upwardly and is provided with the bosses 0 connected by the bar ctat the top and the rib c at the bottom,

such bosses with the rib and bar forming a guide-and support for the lever H in its oscillating movement, as'will hereinafter apear. The extension C has bearin -bosses in which is j ournaled one end of t e crossshaft I.

Between the bearing-bosses C on the shaft I weprovide a cam-wheel J.

C 1s a rearward extension of the frame 0 at the op osite end, such rearward extension carryin t ebearing-bosses Cithroughwhich the sha t I extends. I K is a pinion on the end of the shaft I,

which meshes with the gear-wheel L, secured on the axle A.

Suitable means is, not necessary here to describe, are provided for throwing the pinion in and out of gear.

The cam-wheel J is g of which are perpendicular to the bottom or' inner periphery of the cam. The 0 pop v rovided with a serpentine wayj, the inwarly-extending apexes site corresponding recess is rounded an in clines inwardly at the bottom, so as to mit of easy movement of the roller h at the end of the lever, which, it will be noticed, is a tapered roller with the shortest diameter at the inside. The roller 72, is journaled on a pin 72?, extending through the end of the lever.

It will be'notlced that the axis of the roller is at right angles to the lever and on a line passing through the cenper-- volves will have a continuous sinuous movement without jar 'or break. of the continuity of such movement, as such roller will continue to roll as it passes from the apex j of one side into the recess j of the opposite side, so as to pass along that side. In other words, there will be no jum ing of the roller from one side to the other, ut a ontinuous rotation of the roller as it follows the sinuosity of the cam.

The lower end of the lever II is bent and has a ball secured thereto which fits in a socket formed by a forked end of a link M. Thus a ball and socket connection m is formed at this point. The other end'of'this link is bent and is connected to a pin g, which extends through the heel g of the knife-b ar G.

When the knife-bar is at the beginning of its stroke, the lever I-I, knife-bar, and link M are arranged so that the connection between the lever and link M is located to the inside of the fulcrum of the'finger-bar. By this arrangement when the stroke is made the connection m travels to-a point to the opposite side of the fulcrum equidistant from it. It will be seen that when the knife is in the raised position there will be'mueh less motion-to it than if the connection was located in any other position.

By reducing the motion when the knifebar is in the raised or inoperative position it reduces the wear on the knife-bar, yet at the same-time when'the knife-bar is in theoperative position the arrangement allows of a maximum length of stroke to it.

It will now be understood that as the shaft I is caused to rotate the cam J imparts a reciprocating movement to the link M, and consequently to the knife-bar.

In order to raise the knife-bar, we'provide the following device: N isa lever, which is pivoted on a pin it, extending through a bracket 0, attached to or forming part of the frame C. The bracket 0 is provided with a quadrant 0 and the lever N with a suitable plunger N, designed to coact with such bracket and operate in the usual manner. P is a supplemental lever, which is pivoted on an extension 0 of the bracket 0 and provided at the upper end with a roller 10, which is held so as to run in a guideway n secured to or forming part of the lever N, by means of a spiral spring Q, connected to the rear lower bent end of the lever P at one end and to an eye-bolt 1, extending through the bracket R, attached to'the tongue or pole.

Itwill be noticed that the point of connec tion of the spiral spring Q at the lower end of the lever P is beneath a line extending be tween the end of the bracket R and the upper portion of the frame C, supported on the axle A, and it will consequently be understood that the tendency of the spring Q at all times is to exert an upward pull on the front portion of the frame 0, and consequently on the finger-bar, thereby serving to cause such linger-bar to rest lightly on the ground, depending on the tension of the spring, thus materially assisting in reducing the draft.

The lower end of the lever N is connected by a link or red 2 to one or the other of the holes 3 in the rear of the shoe F. It will thus be understood that not only does the spring Q serve the purpose hereinbefore referred to, but also when the lever N is manipulated and drawn in the direction indicated by arrow such spring Q pulling upon the lower end of the lever 'P will press the roller 1) against the lever N, thereby 'inaterially assisting the driver of the machine in raising the lingerbar. In fact, so much so does the spring serve this purpose that with but a slight 1quick exertion on the top of'the lever N the 'nger-bar will be raised into the position shown in dotted lines in Figs. 1 and 2, and in which position it would be held'bythe plunger N coming in contact with'the rear of the quadrant 0.

Upon the plunger N 'and the lever 'N being released the spring Q, counterbalaneing the weight of the finger-bar, will serve toallow such finger-bar to pass gently back to the working position, which is an important deiideratum, as it avoids the racking of such It will be noticed on reference to Fig. 2 that when the finger-baris raised into the position shown in dotted lines such link M is raised to the vertical osition, and as the movement of the front ower end of the lever H is a horizontal movement to the inside'of the pivot-pin 0, extending through the shoe of the finger-bar, such movement of thelever will not communicate any appreciable motion to the knife-bar, thereby serving to prevent any racking of the-machine, and consequently it will be unnecessary to throwout the gear. In fact, we only throw out the gear-drive when we are not using'the machine, but driving'long distances.

From this description it will be seen that we have produced a mower-with aless number of parts than those at presentin use and less liable to wear and tear,lighter, more durable, and in which all the working parts are perfectly protected fromobstructions in the field, and in which the draft is reduced to a minimum.

What we claim as our invention is 1. In a mower, the combination of'the finger-b ar, the knife-bar arranged. to reciprocate on the finger-b ar, a frame on which the fingerbar is pivoted, a lever pivoted intermediate its ends to the frame at right angles to the knife-bar, means at one end of sald lever for oscillating the same horizontally, a link M having a ball-and-soeket connection with-the lower end ofsaid lever, said link M having a bent end which is connected with the knife bar so as to movementw bar near the axis of thepivot of thefingergl've the knife {bar reciprocating en the lever is reciprocated and means for raising the 'fingerbar with the knife-bar into vertical position whereby the pplint of connection of the link M with'the ife-bar will be carried above the plane of movement of the lever so that the lower end of the link M will oscillate while the upper end is substantially stationary, substantlally as described.

2. In a mower, the combination with the wheels, swingin frame and finger-bar pivotally connecte to the same, and a lifting-e lever pivoted on the swinging frame, and the link connecting the bottom end of the lever to the finger-bar, of means ooacting with the lever for reducing the weight of the fingerbar as it is being raised as and for the purpose s ecified.

3. n a mower, the combination with the wheels, swinging'frame and finger-bar pivotally' connected to the same, and a liftinglever pivoted on the swinging frame, and the link connecting the bottom end of the lever 'ver to the pose spee' ed.

to the finger-bar, of asupplemental lever pivoted on the swinging frame and having one end designed to come in contact with the lever, and aspiral spring connecting the opposite end of the lever to the pole or tongue as and for the purpose specified.

4. In a mower, the combination with the wheels, swinging frame and finger-bar pivotally connected to the same, and a liftlnglever pivoted on the swinging frame, and the link connecting the bottom end of the lever to the finger-bar, aguide on said lever of a supplemental lever pivoted on the swinging GEORGE DOAN JOHNSON. JACOB HENRY JOHNSON:

I Witnesses;

D. M. GRANT, J. R. SooTT.

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