US2009784A - Corn binder - Google Patents

Description

July so, 1935. G, O PALMER 2,009,784

CORN BINDER Filed Oct. 13, 1934 2 Sheets-Sheet 1 I nventm' ee/9e 0 Pa/Zmer Attorney July 30, 1935. PALMER 2,009,784

CORN BINDER Filed Ocfh. 13, 1934 2 Sheets-Sheet 2 b q Inventor Patented July 30, 1935 UNITED STATES PATENT OFFICE CORN BINDER George Owen Palmer, Morrisville, N. Y.

Application October 13, 1934, Serial No. 748,253

T 1 Claim. (01. sis-r02) developed to include a rotary knife equipped cutting means. It is to this particular subdivision of the prior classification that the present invention appertains.

In reducing the invention to practice and perfecting the principles of present conception I have evolved and produced an arrangement which, I believe, is more satisfactory more practicable and therefore capable of transcending in importance and eficiency similar prior art devices with which it may be compared.

More explicitly stated, and as will be revealed from the following description and the accompanying drawings, the alleged novelty is predicated upon the particular construction and adaptation of features which go to make up the corn severing means.

Other features and advantages may become readily apparent from the following description and accompanying pictorial drawings.

In the drawings wherein like numerals are employed to designate like parts throughout the same:

Figure l is a top plan view disclosing what may be said to be a conventional corn binder frame structure provided with power transmission means particularly suitable for driving the improved cutting mechanism constituting the novc of the instant case.

Figure 2 is a view which may be said to be a side elevational view of the rotary cutter or relatively movable part of the improved cutting mechanism.

Figure 3 is a top plan view on a slightly enlarged scale, of the cutter head per se.

Figure 4 is an enlarged detailed sectional view taken approximately on the plane of the line 4--4 of Figure 3.

Figure 5 is a plan view of the relatively fixed or stationary knife unit.

Figure 6 is a cross sectional view on the line 6-6 of Figure 5.

By way of introduction it is to be pointed out that the essential novelty, as will be hereinafter claimed is illustrated on Sheet 2 of the drawings. It is understood, however, to enable one to determine the practicability and relative position of the device with respect to the machine it is advisable to show it associated with what may be described as a conventional corn binder. Therefore, Figure 1 is utilized for this purpose and upon referring thereto it will be observed that it discloses a conventional frame 1 of appropriate type which is wheel supported. The wheel at one side is denoted by the numeral 8 while the complemental wheel at the other side is differentiated by the numeral 9. The latter wheel is what may be distinguished as the ground traction type. It is employed, therefore, to supply power to the rotary cutter. The means employed to accomplish this result comprises a ring gear it on the interior of the wheel which serves "to drive a power take-off pinion H carried by stub shaft mounted for rotation in an appropriate bearing bracket l2. This stub shaft is provided with a beveled gear [3 meshing with a complemcntal gear M on a right angularly disposed power transmission shaft I5. The motion from the shaft I5 is conveyed through the instrumentality of additional beveled gears l6 and I], the latter one of which is attached to a suitable shaft to drive the main motion transmitting gear 18. It is this gear [8 that meshes with the final beveled gear I9 constituting an integral part of the rotary cutting means.

Referring now to the rotary cutting means in detail it will be observed that the relatively movable parts thereof may be denoted as a rotor and this includes a suitably mounted perpendicular shaft 20 having a multiple bladed head 2|.

'The head is better shown in Figure 3 and by referring to this it will be observed that it includes a sectional hub 22 made up of complemental parts serving as a mounting for the knife carrier plates 23. There are three of these plates and they are arranged in circumferentially spaced relationship and approximately at equi-distant points so as to insure continuous cutting operation, It will be noted that each plate is of segmental configuration. Moreover, that edge 24 which is located adjacent to and cooperates with the knife is of arcuate form. The degree of ourvature will depend greatly on the diameter of the head as a unit. In any event however, this edge is preferably curved to the degree shown and radiates from the hub in the manner depicted in Figure 3. Associated with this edge 24 is the cutting knife 25 and this is riveted or otherwise fastened to the edge and is itself of arcuate formation. It is particularly important to note this cutting blade is curved in a radial manner so as to sweep in the corn stalk during the period of rotation of the head in order that it may be sheared off without hinderance. Incidentally, in perfecting the principle of operation and construction herein shown it has been my primary aim to provide a structure which insures constant rotary cutting action and one in which the stress and strain is distributed with the requisite uniformity, Hence, the importance of this hub, plate and knife arrangement forming the socalled cutting head.

Not only is it necessary to use this especially designed head arrangement, but it is believed essential to employ an appropriately designed companion cutting element. That is to say, the stationary knife is equally important. This stationary cutter or knife naturally embodies an attaching plate 26 which is securely fastened at an appropriate point to the parallel portions of the guide rod 21 of the frame structure shown in Figure 1. Then on the curved edge of this supporting plate is the arcuate cutting blade 28. Merely for purpose of convenience of distinction part 28 is described as a fixed or stationary sheering blade while the cutting elements 25 are described as relatively movable "severing or cutting knives. It is evident however, that the rotary knives spin or turn in a plane to permit them to swing over and cooperate with the sheering blade 28. Consequently as the corn stalks are fed between the guides 27 and against the blade 28 this functions as'a holding or abutment device and as the cutting knives swing around they sheer the stalk off in an evident manner. The free cutting surface of blades 25 are substantially co-extensive with the free cutting surface of shearing blade 28 when they are in wiping engagement.

The method of transmitting motion to the cutting head is more or less immaterial and as before stated the novelty is directed primarily to the cutting means.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

Minor changes in shape, size, and rearrangement of details coming within the field of invention claimed may be resorted to in actual practice, if desired.

I claim:

In a stalk harvester characterized by a wheeled frame embodying a pair of spaced horizontally disposed guide bars forming a guide channel for the stalks the combination of a curved stationary shearing blade secured to the frame and bridging the guide channel, a, rotary cutter including a vertically disposed shaft mounted on the frame, a hub fixed to the shaft, a plurality of radially disposed circumferentially spaced supporting plates secured to the hub, cutting blades of a uniform curvature in a radial direction secured to the leading edge of the plates and projecting forwardly thereof in wiping engagement with the shearing blade, and the free cutting surface of the rotary cutting blades being substantially coextensive with the free cutting surface of the shearing blade when the former are in wiping engagement with the shearing blade.

GEORGE OWEN PALMER.

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