US34267A

US34267A - Improvement in guard-fingers for harvesters

Info

Publication number: US34267A
Authority: US
Publication date: 1862-01-28
Anticipated expiration: 1879-01-28

Description

IINrrnn Sra-*ras Farrar* inicien.

MILES B. BIGGS, OF NEV YORK, N. Y.

IMPROVEMENT IN GUARD- FINGERS FOR HARVESTERS.

Specification forming part of Letters Patent No. 34h26?, dated January 28, 1862.

T0 @ZZ whom, it may concern..-

Be it known that I, M. B. BIGGS, of the city of New York, in the county of N ew York and State of New York, have invented new and useful Improvements in Guard-Fingers for MowingA and Reaping Machines; and I do hereby declare that the following is a full and complete description of the construction and operation of the same, reference being had to the accompanying drawings, making part of this specification, in which- Figure l is a perspective view. Fig. 2 is a perspective view with the' center part removed. Fig. 3 is atop view with the center part removed, and Figs. 4, 5, 6, and 7 are detached parts.

The nature of my invention relates to the lierein-described construction of the guardfinger and the mode of attaching a stationary steel cutter in each finger, which, in conjunction with the movable cutters, operates upon the principle of shear-blades- The body of the guard-fingers, Figs. 2 and 8, are made from cast metal, in the form represented in the igures, (but may be of any other desired shape,) the heel A being about one inch and a half broad and half an inch thick. The upper side is hollowed out, as seen at B, by which means both lightness and strength are combined, together with facility in fitting to the finger-bar. About three inches from the heel A the guard increases in thickness onefourth of an inch, as seen at C, thus forming the seat of the iinger-bar.

At D there is a curved seat formed for the reception of the rod E, Figs. l and 4f, and

. which extends from 'linger to nger, being composed of one entire piece of malleable iron; or it might be made in sections. At equal distances on this bar,and corresponding with the position of the iingers on the finger-bar, there are seniicircular enlargements or lugs, as seen at F, which iit into the cavity of the finger at G, Figs. 2 and 3, and are secured by a screw-bolt or rivet, H, Fig. l, the bolt or rivet passing through the hole Hin Fig. 4, and through the hole I of the iinger, as seen in Figs. 2 and 3. The hole on the under side of the iinger is countersunk, and the rivet or l bolt has a head, which rests upon the top of the projection F, Fig. 7, as seen in the iigure; then, by hammering the lower end, it can be made to iit the countersiink hole in the finger, as at L, Fig` 7. Vhen the fingers and bar are thus fastened together, they are iirm and secure; but the fingers can be removed from the bar E by cutting oi' the head of the bolts with a cold-chisel, when the body of the bolts can be driven downward through the bar and iinger. The upper surface of the enlargement F falls about one-eighth of an inch, as seen at M, Figs. 4, 5, and 6, being wider in front, as at O, than in the rear, as at I?, Fig. 4, and dovetailing, as at Q, Figs. 5 and 6. Into this dovetail depression is fitted the steel plate It, the forward end of which plate iits into the cavity B, as indicated by the dotted lines in Fig. 8. This plate R is shown in place in Fig. l. The upper side is made smooth and level or slightly concave, the edges T T being beveled like the blades of shears, the upper edge being the cutting-edge. The forward end may be rounded, as at U, Fig. 4:, to fit the cavity in the finger at S, or it may be angled inward, as at V, and the cavity in the finger made to correspond.

In putting the parts together after having been properly Iitted, the blades It are pnt into the dovetailed depression M, and the bar E adjusted to the finger-body, as seen in Fig. 1, and riveted, as before described. The rivets may be inserted from the under side of the ringer-body, and the head formed by liainmering down the point on the top of the lug F.

I do not elaiin the counter-cutting plate per se, the saine having been used in mowing and reaping machines before, but

Vhat I do claim as my improvement, and desire to secure by Letters Patent, is-

The bar E, made either entire or in sections, and provided with the lugs F, as described, when arranged in combination with the fingers and counter-cutters, in the manner and for the purpose specified. y

M. B. RIGGS. -Witnesses:

J. BRAINERD, A. McULnLLAND,