USRE3393E - Improvement in harvesters - Google Patents

Description

2 Sheets-Sheet 1. C. CROOK.

Harvester.

Reissued April 20, 1869.

BEST AVAILABLE COPY BEST AVAILABLE COPY 2 Sheets-Sheet 2.

C. CROOK.

Harvester.

Reissued April 20, 1869.

QANS NU vm l o a.

Fig-z.

UNIT D (STATES;

ASSIGNMENTS, OF CHARLES GROOK.

IMPROVEMENT IN HARVESTERS.

Specification forming part of Letters Patent No. 17,205, dated May 5, 1857; reissue N0. 548, dated May 4, 1858; reissue No. 3,393, dated April 20, 1869.

To all whom it may concern:

Be-it known that CHARLES ORooK, of New Hope, Bucks county, State of Pennsylvania, invented certain new and useful Improvements in Mowing and Reaping Machines, of

which the following is a full, clear, and exact description, reference being had to the accompanying drawing and to the letters of refer ence marked thereon, in which- Figure 1 is a perspective View of a mowing and reaping machine illustrating this improvement; Fig. 2, a ground plan with part of the gearing in section; Figs. 3 and 4, views of the driving-gear; Fig. 5, an end View of the grain side of the cutter-frame. 1

Similar letters refer to similar parts througlr out the several views.

The invention consists in an arrangement of gearing by which the speed of the cutters may be readily changed.

A represents the platform attached to the cutter-frame, which is composed of the outside bar A, the inside bar A the front bar A and the back bar A. A rounded continuation, B, of the latter, and with it the whole cutter-frame, turns in brackets on the main frame 0 of the machine. D is the main driving-wheel, secured to the shaft D, which turns in boxes at a. These boxes have oblong slots 0 0, through which bolts or screws pass into the main frame, so that the boxes, and with them the shaft D and its driving-wheel D, may be adjusted at pleasure. To the driving-whcel are secured the gear-wheels d and D both having teeth adapted to gear into those of the pinion J, which is secured to the end of the shaft I, the latter turning in boxes 0 0, attached to a plate, Q, which is secured to the main frame.

This plate may be made adjustable by allowing the screws or bolts 70 to pass through oblong slots j. It is not necessary, however, that both the boxes a a and the plate Q, with its boxes 0 0, should be adjustable. Either one or the other may be permanently secured to the main frame.

On the shaft I is a bevel-wheel, K, gearing into the bevel-pinion h on the shaft H, which DIVISION A.

turns in brackets on the main frame, and the end of which is formed into a crank, g. To the latter is connected one end of the rod G, the opposite end being connected by means of a swivel-joint, i, to an arm of the lever F, which has its fulcrum on a pin, 19, attached to the inside bar A of the cutter-frame, the opposite end of the lever being pivoted to the cutter-bar E. A caster, 0, supports the rear of the main frame, and the outer end of the cuttenframe is supported on the caster P. To the'inside bar A of the cutter-frame, and betweeuthe center of vibration of the latter and the cutters, is jointed the bar M, which passes through and is guided by the staple l on the main frame. A lever, N, has its fulcrum on a pin attached to the main frame, and to this lever are secured the-segment m of a pulley and the ratchet-wheel n. To the former is attached the cord or chain n, the lower end of which is connected to the bar M, and the teeth of the ratchet-wheel are adapted to the pawl 0, which is hinged to the main frame, and which serves to retain the cutterframe in the position to which it may have been raised by the lever N.

In practice it is frequently found necessary to change the speed of vibration of the cutters, to adapt them to the condition of the crop to be acted upon, and at the same time it is desirable to keep the speed of vibration as low as practicable, because of the jar or strain upon the machine consequent upon a rapid vibration.

This change of speed is effected by the employment of two driving-gears, d D, of unequal size, either of which may be used to drive the cutters, at the option of the attendant.

The outer end of the swivel-joint 1' turns on the rounded end of the arm of the lever F,

and, as the inner end of the joint is allowed to turn freely on the end of the connectingrod G, and as the latter is in close proximity to the center line of vibration of the cutterframe, it is evident that the cutters may be raised and lowered at pleasure Without disarranging the proper working position of either ASSIGNEE, BY MESNE the rods or the lever, or causing any interruption in the operation of the machine.

What is claimed under this application as the invention of CHARLES CROOK1S- 1. Two driving-gears, of unequal size or diameters, for changing the rapidity of vibration of the cutters.

2. A concentric arrangement of two drivinggears of unequal'size, for changing the rapidity of vibration of the cutters.

JAMES I. HENDRYX.

Witn esses:

C. N. SMITH, ASAHEL A. JARVIS.

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