US1224002A - Cutting mechanism for harvesters. - Google Patents

Description

A. B. MEINHARDT.

CUTTING MECHANISM FOR HARVESTERS.

APPLICATION FILED JUNE 10. I916.

LQ2UQ2B Patented Apr. 24, 1917.

l/VVENTOR nnrr stra a ADAM B..MEINI-IARDT, OF PAXICO, KANSAS.

CUTTING MECHANISM FOR HARVESTERS.

Specification of Letters Patent.

Patented Apr. 242, 1917.

Original application filed December 30, 1915, Serial No. 69,469. Divided and this application filed June 10,

1916. Serial No. 102,858.

To all whom it may concern:

Be it known that I, ADAM B. MEINHARDT, residing at Paxico, in the county of \Vabaunsee and State of Kansas, have invented certain new and useful Improvements in Cutting Mechanism for Harvesters, of which the following is a specification.

My present invention relates to harvesters, and more particularly to the cutting mechanism thereof and the present invention has for its primary object to provide a cutting mechanism which is especially designed and adapted for use in the harvester which forms the subject-matter of my application for Let ters Patent filed December 30, 1915, Serial No. 69,469, of which the present application is, in large part, a division.

The present invention has for its object to provide a cutting mechanism so arranged with relation to the platform apron that the fingers and knife bar are located close up to the front slide bar on which the platform or canvas slides so as to make it possible to elevate short grain in better shape and form than is possible in those harvesters now in common use and in which the knife bars are located at too great a distance from the platform canvas.

The invention includes those novel details of construction, combination and arrangement of parts, all of which will be first fully described, then be specifically pointed out in the appended claims and illustrated in the accompanying drawing, in which:

Figure 1 is a top plan view of a portion of my harvester with my invention applied.

Fig. 2 is an enlarged detail plan view of a ortion of the mechanism showing several fingers and a knife gnard in place, the knife appliance, however, being shown in dotted lines.

Fig. 3 is a detail cross section on the line 33 of Fig. 1.

Figs. 4: and 5 are detail perspective views of two of the fingers.

Fig. 6 is a detail perspective vi w of the knife guard.

Fig. 7 is a detail front elevation on a small scale showing how the knife bar is reciprocated.

Referring now to the accompanying drawing, in which like numerals and letters of reference indicate like parts in all of the figures, 257 represents the platform canvas or apron, the front edge of which slides on the slide board 30-1 of the frame.

The cutting mechanism fingers 297 have a base .298 that eXtends sidewise and is fastened to the forwardly extending supporting bar 299 (see Figs. 2 and 3) by suitable screws 299, the bases 298 having recesses 300 in their top faces to reduce the area in contact with the knife bar 301 to which the knives 302 are fastened by rivets 302 or in any other suitable manner. Knife guards 303 are secured to the front slide board 304 of the platform frame and embrace the knives and knife bar between the adjacent fingers 297. The fingers 297 at each side of the knife guard 303 have one of the projecting ends of the base 298 out off so that the knife guard 303 can lie between adjacent fingers without interfering with the properspacing of the fingers (see Figs. 2 and 5). In this manner, the cutting mechanism can be located close up to the platform canvas and leave the grain butts to project only slightly over the platform edge after the rain is cut and has fallen onto the plat form.

The knife guard 303 is secured to the supporting bar 299 by suitable screws 299 (see Fig. 2) which pass through the screw holes 303 in the base of the knife guard, the knife guard including the base portion, the vertical member 303 and the finger 303 which fits over the knife and may have a transverse groove 303 to permit easy passage of the heads of the rivets 302 when the knife bar is reciprocated.

The knife bar is reciprocated by means of a crank and pitman connection indicated in Fig. 7, by reference to which it will be seen that in bearings on the frame 44: is journaled an operating shaft 133 which carries a disk 17 5 having a crank pin 17 6 which is operatively connected by a connecting rod 177 to the slide bar 301 as at 17"? thereby imparting reciprocatory motion to the bar 301 from the rotary motiton of the shaft 133.

It should be understood that the knife guards 303 are not necessarily provided between each pair of fingers but are provided at intervals of each five or six fingers.

297 are the ledger plates which are secured by screws 297 or otherwise, to the fingers in the knife slots and cooperate with the knives 302 in the usual manner.

The finger bars have their bases 298 secured to the bar 299 by the screws 299, the the bar 299 being sustained in position by reason of the fact that said bar 299 is secured by the screw bolts 299 to the guards 303, which guards 303 are, in turn, bolted to the bar 304, as shown in dotted lines in Fig. 3. The manner of securing the bar 299 in a fixed relation to the bar 30 i is immaterial for the purpose of this application, as any well known means for the purpose may be employed.

From the foregoing description taken in connection with the accompanying drawing, the complete construction, operation and advantages of the invention will be readily understood by those skilled in the art to which the invention appertains.

WVhat I claim is 1. In a cutting mechanism for harvesters, the combination with the supporting frame body over which the conveyer canvas slides, a bottom bar, means for holding said bar to project forwardly from said body, a cutting mechanism supported on said body and bar in close juxtaposition to said body and comprising a set of fingers, each including laterally projecting base portions secured on the top of said bar and held against said body, a knife bar slidable on said base portions, knives on said knife bar, knife guards secured to said projecting bar and projected over said knives, and means to reciprocate said knife bar.

2. In a cutting mechanism for harvesters, the combination with the supporting frame body over which the conveyer canvas is sliding, a bottom bar, means for holding said. bottom bar to project forwardly from said body, a cutting mechanism supported on said body and bar in close juxtaposition to said body and comprising a set of fingers, each including laterally projecting base portions secured on the top of said bar and held against said body and having recessed upper faces, a knife bar slidable on said base portions, knives on said knife bar, knife guards secured to said projecting bar and project ing over said knives, and means to reciprocate said knife bar.

3. In a cutting mechanism for harvesters, the combination with the supporting body including a bar, means for holding said bar to extend forwardly from the body proper, a cutting mechanism supported on said body and its bar in close juxtaposition thereto and comprising a set of fingers, each including laterally projecting base portions supported on said body and its bar, a knife bar slidable on said base portions, knives on said knife bar, knife guards secured to said body and its bar and projecting over said knives, and means for reciprocating said knife bar, said base portions of said finger being recessed to reduce the areain engagement with said knife bar and thereby reduce friction.

4. In a cutting mechanism for harvesters, a supporting bar, a set of fingers each in cluding a base portion having a lateral projection, means for securing said base portion to said supporting bar, each of said fingers having knife slot passages, ledger plates secured in said passages, knife guards each including a base portion arranged be tween a pair of fingers, said knife guard base portion and said finger base portion lying in the same plane, a knifecarrying bar slidable on said base portions, knives carried by said bar to cooperate with said fingers, said knife guards including portions projecting over said knives to hold said knife bar down on said bases.

5. In a cutting mechanism for harvesters, a supporting bar, a set of fingers each including a base portion having a lateral projection, means for securing said base portion to said supporting bar, each of said fingers having knife slot passages, ledger plates secured in said passages, knife guards each including a base portion arranged between a pair of fingers, said knife guard base portion and said finger base portion lying in the same plane, a knife carrying bar slidable on said base portions, knives carried by said. bar to cooperate with said fingers, said knife guard including portions projecting over saidknives to hold said knife bar down on said bases, said knife guard projecting portions having transverse grooves on their under faces, said knives being secured to said knife bar by members having heads to pass through said grooves.

ADAM B. MEINHARDT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

Images