US43811A - Straw-cutter - Google Patents

Description

0. H. WHITTEMOREM' Straw Cutt er.

Patented Aug. 9. 1864.

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UN TED STATES PATENT "OFFICE.

D. H. WHITTEMORE, OF WORCESTER, MASSACHUSETTS.

STRAW-CUTTER.

Specification forming part of Letters Patent No. 43,811, dated August 9, 1864.

To all whom it may concern:

Be it known that I, D. H. WHITTEMORE, of Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Lever Straw-Cutters; and I do hereby declare that the following is a full and exact description of the same, reference beinghad to the accompanying drawings, making part of this specification.

The drawings represent the front or working part of the machine, which is composed of iron-the usual material for such purposesthe wood part or frame not being necessary to explain my improvement.

Figure 1 is a front view. Fig. 2 is a perspective view of the back end of the lever, with the parts in which it turns, showing the manner of adjusting the knife to the bed-plate, &c. Fig. 3 is an edge back view of the faceplate with the lever and adjustable parts removed,showing the step upon which the adj ustable parts rest. Fig. 4 is a top view of the step, showing a portion of the face-plate, of which it is a part.

In Fig. l, a is the face-plate, through which the feed passes, and past which the knife moves to cut it off. This face-plate is screwed or bolted to the wood frame or hopper. b is the lever, and c is the knife, fastened to it in the usual way. The dotted 6 shows the position of the shaft upon the lever which is pointed at the ends, and upon which points the lever turns. 01 and c are each adjustable ears in which the lever turns by means of the shaft upon the same. Said ears are held to the step h upon the face-plate a by means of the bolt f f.

In Fig. 2 the shaft 1' upon the lever b is more fully seen with its pointed ends. I

In Fig. 2 the step or platform h is seen with the ears 0 d upon it and with the bolt removed, showing the slot 9, through which the bolt passes. The part c c has a horizontal part, the bottom of which corresponds in size and shape to the top of the step h, upon which it rests. It is slotted in the center, like the part at (1 above, and has an ear running up in which a countersink is made corresponding insize and shape to the point of the radial arm which is inserted in it, and in which it turns. This serves as one end of the hinge for the lever. Another piece, d, is placed upon this, which is about as much shorter (horizontally) than the one below as the thickness of the ear upon the part c. The ear upon the part d, which serves to make the other part of the hinge for the lever, is similar to the one on the opposite end, except it is as much shorter as the thickness of the horizontal part of 0 below. These ears are of the same relative height when placed in position. The part dis concave upon the bottom, as seen at c, and the part c is convex upon the top, so that when placed and held firmly together by the bolt f they will turn upon each other, and the part c is beveled or inclined toward the mouth of the hopper at the front end of said piece, and beveled the other way upon the other end, (upon the bottom,) while the top of the step h h, upon which it rests, is corresponding in shape, as repre sented by the dotted line on h h in Fig. 2, and by the inclined plane of h in Fig. 1; also by the dotted line h and shaded line h in Fig. 3, and by the shaded lines h h in Fig. 4. By thus beveling those parts together, when the lever and knife are in position for cutting, the knife in the lever is naturally inclined toward the face-plate, past which it moves to cut the feed, and it will not easily work away from it to allow the feed to run through without being out. It thus allows the use of only one bolt to make all the adjustments, when without this bevel principle it would require two bolts, and, besides, a set-screw is usually found necessary to keep the knife in the right position for cutting.

By this improvement the parts at and c are adjusted together until the lever is held firm between them, and both are moved upon the step It and adjusted properly to the face-plate for cutting. All these adjustments are accomplished thoroughly, and the parts held necessary. and very little iron-work. is recombined with the corresponding shape of c quired. and used as and for thepurpose set forth.

What I claim as my improvement, and de- In Witness whereof I have hereunto subsire to secure by Letters Patent, isscribed my name the 19th day of February,

1. The lever b, ears 0 d, and convex surface 1864. r c, with the corresponding concave of 01, when D. H. WHITTEMORE.

combined and arranged as and for the pur- In presence ofpose specified. A. S. N IGHOLSON,

2. The inclined plane of the step h, when I JOHN H. SARBER.

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