USRE772E - Improvement in mowing-machines - Google Patents

Description

2 Sheets-Sheet .1.

AULTMAIN & MILLER.

Mowing Machine. v

Reissued July 19, 1859.

N. mam Phmumw. Wnhinmn. n. c.

2 Sheets-Sheet 2;

AULTMAN '& MILLER.

Mowing Machine.

Reissued July 19, 1859.

N. Prrzns. Fhololnhogrlphlr. Wililiivuglon. n. c,

UNITED STATES PATENT OFFICE.

O. AULTMAN .AND LEWIS MILLER, OF CANTON, OHIO, ASSlGNORS, BY

MESNE ASSIGNMENTS,

TO 0. AULTHAN & CO.

IMPROVEMENT lN MOWlNG-MACHINES.v

Specification forming part of Letters Patent No. 15.160, dated June 17, 1856; Reissue N0. 772. dated July 19, 18:59.

DIvIsIoN B To all whom "it may concern.-

Be it known that we, (JoRNELIUs AULTMAN and LEwIs MILLER, both of Canton, in the county of Stark and State of Ohio, have invented an Improvement in Mowing-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which makepart ofthis specification, and in which-- Figure 1 represents a view in perspective of a mowing-machine which embracesourimprovements, the finger-beam and cutter being raised on end and leaned against the side of the frame to adapt the machine to being drawn to or from the place of mowing. Fig. 2 represents a like view of the rear portion of the machine with the finger-beam extended upon the ground ready for mowing. Fi 3 represents an elevation of the rear of the machine, showing particularly the relative positions of the parts when the finger-beam is down on the ground ready for work and when it is raised ior transportation. Fig. 4 represents a section of the machine on the right of the line 00 aaofFig. 3. Fig.5 represents an axial vertical section through one of the supporting-wheels, one of the ratchet-wheels, and that end ofthe axle on which these wheels are mounted, and a transverse section of those portions of the frame which are cut by the plane of the section through the wheel and axle. Fig. 6 represents a transverse section at the line a: m of Fig.6, andan elavation of the partsto the right of that line, except the frame and the rim and the outer ends of the spokes of the driving-wheel, showing particulafly the relative position ofthe spring and pawl with the other parts when the pawl is in gear with the ratchet-teeth. Fig-7 represents the same View of the parts shown in Fig. 6, but with the spiing and pawl in a second and different position from the one shown in that figure; and Fig. 8 represents the same view of the parts shown in Fig. 6, but with the spring and pawl in a third position, difi'erent from those shown in Figs. 6 and 7.

We term that side of the machine the right side which would be at the right hand of a person behind the machine and looking toward it, and the opposite side of the machine we term its left side.

In machines for mowingin which, like ours,

the cutting apparatus is drawn by a yielding coupling-arm attached to the main frame it has been found necessary to support the coupling-arm by a yielding brace. The'brace, how'- ever, did not work satisfactorily, because, as we have discovered. ofits hinge or axis of motion not being in a line with that of the arm,

and consequently giving to the latter, while hein g raisedand lowered, a'horizontal vibratingmovement, also, which imparted to the fingerbeam a corresponding movement. This want of coincidence with a common line of the axis of the hinges of the brace and coupling-arm likewise involved a degree of looseness in the hinges which connected the coupling-arm with the finger-beam and main frame highly objectionable, as it prevented the hinges from being as strong as they would have been if the joints had been close, and the play in the joints allowed thejolting and swaying movements of the main frame and of the finger beam to vibrate the cutter independently-of the crank, sometimes moving it in the same direction as the crank and elongatingits stroke, and at other times moving it in opposition to the crank, in a measure neutralizing the crank motion and curtailing the stroke of the cutter. These irregularities produce very serious difiicnlties in the cutting, as the angular projecting blades of the cutter are so many vibrating shear-blades, which act in connection with a corresponding number of stationary blades, (in this casethe sides ofthe guard-fingers,) and in order that these shears may cut to the best advantage the vibrations must be-nniform and of such length that the cutting-edges will be alternately separated to the maximum extent to receive between them the stalks to be severed, and then brought together to efiect their severance. If the vibration is not long enough, the ed ges of the shears will not come together, and of course will not cut the stalks between them. If the vibration is too long, the edges will pass each other, and on the return vibra tion will not be separated sufiiciently to adwit the stalks between them, and therefore will fail to cut them. "With a. View to avoid these difficulties we have made close-fitting joints between the coupling-arm and the tinger-beam and the main frame, and have arranged the hinge of the brace-bar for supporting the coupling-arm to the main frame in a line with the hinge of the coupling-arm, and this improvementis the invention which we claimunder this patent.

The accompanying drawings represent a mowing-machine in which'the main frame U is supported on twolarge wheels, S S, .in the inannerof a cart, and has a tongue, T, projecting forward. by which the horses draw and guide the machine.

The gearing for vibrating the cutter derives its motion from one or both of'the wheels S S. and consists of a bevel-wheel, H, on the axle of the large wheels, which dri es a bevel- )inion I, on a counter-shaft J that carries a spur-wheel, K, which gearsinto a pinion, L, on a third shaft, M, carrying a crank, M, that,

through a connecting-rod, N, communicates a vibrating motion to the cutter V, which plays through guardtingers \V, projecting in front of the finger-beam.

To the under side of the main frame a strong bracket, G, is firmly secured. This bracket has two branches, g g, one of which, 9, is jointed to the coupling-arm B by a. hinge, E, and the other, g, is jointed by a hinge, E, to a brace, 12, for supporting the coupling-arm against the horizontal strains to which it is subjected.

The axis of the hinge of the brace and that of the coupling-arm are in the same line, and both will therefore turn as ifon a common hinge.

The right end of the coupling-arm is hinged to the shoe A, to which the finger-beam A is firmlysecured.

What we claim under this patent as onrinvention is The combination, with the hinged couplingarm, of a hinged brace whose axis of motion at the end next the main frame coincides with thatof the corresponding endof the couplingarm, substantially as herein set forth.

In testimony whereof we have hereunto subscribed our names.

CORNELIUS AULTMAN. LEWIS MlLLElt. -Witnesses:

DANIEL TONNER, FRED ORTH.

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