US21612A - Improvement in harvesters - Google Patents

Description

UNITED STATES PATENT OFFICE.

DAVID S. MONAMARA, OF NORTH HOOSIOK, NEW YORK.

IMPROVEMENT IN HARVESTERS.

Specification forming part of Letters Patent No. 21,612, dated Stptember 28,1858.

To all whom it may concern.'

Be it known that I, DAVID S. MCNAMARA, of North Hoosick, in the county ot' Rensselaer and State of New York, have invented a new and vImproved Grain and Grass Harvester; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making apart of this specification, in which- Figure l is a side sectional elevationof my invention, taken in the line .r x, Fig. 4. Fig. 2 is an end View of the same. Fig. 3 is a detached back view of the frame of the same. Fig. 4 is a plan or top view of the same.

Similar letters of reference indicate corresponding parts in the several figures;

This invention consists in constructing the frame of the machine in a peculiar manner, as hereinafter fully shown and described, where by great strength with lightness is obtained and suitableprovision madeforstraining77 the frame or bringing it back to its original proper position in case certain parts become casually displaced by use and are made to lassume undue positions detrimental tothe perfect operationof the machine.

To enable those skilled inthe art to fully understand and construct my invention, I will proceed to describe it.

A, Figs. 1 and 4, represents what isgenerally known as the main frameof the machine, it being that portion in or on which the driving-gear is placed.

B is the driving-wheel, which is placed on a stationary axle, O, attached permanentlyT to the main frame A, the wheel B being at the outer side of the frame A, as plainly shown in Fig. 4. The main frame is formed of two inclined bars, a I), connected at their front ends by a bar, c, which bar has an oblique position relatively with the bar Z1. The back ends of the bars c b are connected to a bar, cl, which eX- tends the whole length ofthe frame, as shown clearly in Fig. 4. The bar d, like c, has an oblique position relatively with the bars o b, as shown.clearly in Fig. 4. The front end ot' the bar a' is attached to a metal shoe, e, which rests on the ground; but the other bar does not touch the ground, its front end being more elevated than a. The two bars a b therefore are not in the same plane, and the back end of bar a is attached to the upper surface of d, it being fitted thereto by a shoulder, f. The

to pass through.

back end of bar b is secured to the under side of d, the end of bar b being recessed to receive d. The front end of bar b is secured to the top or upper surface of bar c, while the front part ot' a is attached to the under snrface of c.

D is a metal rod or truss which passes transversely through the bars a b, and has a nut, g, on its inner end.

E is a metal rod or truss, one end of which passes through the bar a., and the opposite end passes through the bar d about midway between the bar a and the outer end of bar d. (See Fig. 4.) The rod or truss E has a nut, h, on its end, at the outer side of bar d.

F is the nger-bar, one end ot' which is attached to the shoe l, and the other end is attached to a shoe, G, by means of a tenor, t', which passes into a inor'tise or opening,j, made horizontally through the shoe, the shoe being secured to the fin ger-bar by a bolt, k.

H is the end piece of the frame. This end piece is attached at its outer end to the bar d, and its front end is attached to the shoe G, the front part of H having a recess, l, cut into its under side to allow the end of the sickle I The shoe G is attached at its front and back ends to the end piece, H, as shown clearly at M, Fig. 2.

To the front end of the bar I) a metal diskshaped` guard, J, is attached. This guard projects upward in front of the crank-pulley ai, which drives the sickle, and protects said pulley from the cut grass or grain, which might otherwise become entangled with it.

The bars a b c d, end piece, H, and finger-bar F are all ot' wood, and the parts are secured together by bolts in a proper manner.

K is a rod or truss, one end of which is attached to the bar d near its outer end, as shown ato. This rod K passes under a bridge or pendant, p, attached to the side of bar d, and also passes through the back part of the bar b, and hasa screw-nut, L, on its end. (See Fig. 3.)

From the above description it 'will be seen that the front end ofthe bar or or the shoes c,

tested and has 'been found to answer an ad-n mirable purpose.

All parts ofthe frame, owing to the rods or trusses E D, are made to bear a proportion ot1 the strain to which the frame is subjected, and the oblique positions of the bars c d relatively' with the bars t b also add greatly to stifen the frame. By having the front of the end piece, I-I, attached to the shoe G at its back and front end, as shown, the

shoe is rendered perfectly strong, and the Weakness which is'caused by the mortise or openingj is fully compensated for, and the fn-` ger-bar L therefore allowed to be secured to the shoe by means of the tenon and mortise, which could not otherwise be done', and a substantial connection formed.

What I claim as my invention, and desire to secure by Letters Patent, is Y l. Constructing the frame of the machine ot' the bars a b c d, end piece, H, and fingerbar Ii, in connection with the trusses E, D, and K, when the Whole are arranged substantially as and for the purposes set forth.

2. In combination with the frame construct ed as above, the shoe Gr, when constructed as described, and secured to the finger-bar F and end piece, H, in the manner and for the purposes set forth.

'DAVID s. MCNAMARA..

Witnesses:

G. Y. ATLEE, H. H. YOUNG.

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