US189151A - Improvement in plows - Google Patents

Description

R. B; THOMSON.

' PLOW. No. 189,151. Q Patented April 3, .1877.

WITNESSES N. PETERS, PHOTO-LITHOGRAPIIER, WASHINGTON D C.

.f ATE S PATENT Qrrion.

ROBERT B. THOMSON, OF DANSVILLE, MICHIGAN.

IMPROVEMENT IN PLOWS.

Specification forming part of Letters Patent No. 189,151, dated April 3, 1877; application filed February 10, 1877.

To all whom it may concern:

Be it known that I, ROBERT BEN. THOMSON, of Dansville, in the county of Ingham and State of Michigan, have invented a new and useful Improvement in Plows, of which the following is a specification Figure l is a side view of my improved plow. Fig. 2 is a top view of, the same. Fig. 3 is a detail section of the plow and plow-beam through the line at w, and of the colter and cOlter-holder through the line w m, Fig. 1.

Similar letters of reference indicate corresponding parts.

The invention will first be described in connection with the drawing, and then pointed out in the claim.

A is the mold-board, B is the point,O is landside, D is the forward standard, E is the rear standard, and F is the beam, of the plow. The standards D E are made with bends or offsets near their upper ends, to bring the beam F directly over the line of resistance. The upper end of the forward standard D has a forward projection or arm, Gr, formed upon it, through which passes the bolt H, that secures and pivots the beam F to the said standard D. Upon the upper end of-the rear standard E is formed a projection or plate, I, which is made in the form of a section of a circle. The forward edge of the plate I is concaved, and has a flange formed upon its lower side to receive the hook oi the hook-bolt J, which passes up through the rear end of the beam F, so that by loosening the nut of the bolt J the rear end of the plow-beam F may bemoved from or toward the unplowed' land, to adjust the plow to take or leave land, as may be desired. K is the colter, the lower part or blade of which is straight, and is set at an inclination corrugations upon the under side of the said arm G. The lower arm of the colter-holder L is slotted longitudinally to receive the bolt H, by which it is secured in place. The upper arm of the colter-holder L is slotted longitudinally to receive the bolt M, by which the colter K is secured to it. Several holes are formed in the stem of the colter K to receive the bolt M. By this construction the colter K is entirely independent of the beam F, and

may be adjusted up or down and toward or from the land, as may be desired.

N are the handles, which are connected by rounds O, the lower ends of which are secured to the land-side G and mold-board A by bolts, the upper bolts passing through slots, so that the rear ends of the handles N may raised and lowered to correspond with the height of the plowman.

Having thus described my invention, I

claim as new and desire to secure by Letters I Pateut The angular adjustable colter-holder L, in combination with the arm G of the standard D and with the colter K, substantially as herein shown and described.

ROBERT BEN. THOMSON. Witnesses:

JAMES THOMsoN,

MARCUS M. ATWOOD.

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