US2548458A - Renewable plow edge - Google Patents

Description

H. J. WOOCK April 10, 1951 RENEWABLE PLOW EDGE Filed Jan. 26, 1946 INVENTOR.

BY #525527 J 14 0006 Patented Apr. 10, 1951 UNITED STATES PATENT OFFICE 2,548,458 RENEWABLE PLOW EDGE Herbert J. Woock, Alhambra, Calif., assignor to Herbert E. Linden, Los Angeles, Calif.

Application January 26, 1946, Serial No. 643,760

'edge of a plowshare and having adjacent one end a socket adapted to receive the point of the plowand adjacent the other end a plurality of spring fingers which are adapted to cooperate with the body of the blade in clampingly engaging the edge of the plowshare therebetween.

Plowshares to which these renewable edges are applicable generally conform to each other in shape but have minor differences in curvature. In some instances the urface of the share to which the blade is applied is concave and the degree of concavity varies. Where the face of the plowshare is concave the blade of the renewable edge tends to remain straight and in spaced rela- 2 Claims. (Cl. 97. 125) tion to the plowshare between the socket and the spring fingers.

An object of the present invention is to provide an improved renewable plow edge consisting of a blade having a socket adjacent one end and a plurality of spring fingers adjacent the other end and which between the socekt and the spring fingers has a relatively stifi, unyielding contour lug that is engageable behind the plowshare to cause that portion of the blade between the socket and the spring fingers to be held firmly against the forward face of the share so that it cannot spring forwardly thereof.

More specifically, an object of the invention is to provide a renewable edge for plowswherein the contour lug is so shaped as to facilitateits application to the share and is so designed that regardless of the construction of the plow to which it is applied it will not engage or interfere with the frog of the plow.

With the foregoing and other objects in view, which will be made manifest in the following detailed description and specifically pointed out in the appended claims, reference is had to the accompanying drawings for an illustrative embodiment of the invention, wherein:

Figure 1 is a plan view of a portion of the plow illustrating the improved plow edge in applied position thereon;

Fig. 2 is a sectional view taken substantially upon the line 2--2 upon Fig. l, in the direction indicated; and

Fig. 3 is a partial view of a portion of the plowf edge, and may be regarded as having been taken substantially upon the line 3-3 upon Fig. 1.

' Referring to the accompanying drawings wherein similar reference characters designate similar parts throughout, the general shape of the blade l0 may conform to the shape of the renewable edge as disclosed in my copending application having at one end a socket ll adapted to receive the point 12 of the plow. Adjacent the other-end of the blade there is secured a section of heavy metal I3 suitably divided by slots I 4 intoa plurality of spring fingers l5 that are.

welded at the lower ends to-the rear side of the blade and extend upwardly in spaced relation to the body of the blade and have their upper ends bent forwardly slightly toward the plane of the blade. These spring fingers are adapted to cooperate with the body of the blade to clamp the edge of the plowshare between the fingers and the blade. Preferably the body of the blade is shaped as disclosed in my copending application so as to avoid altering the draft of the plow when the edge is applied thereto.

The improvement consists of providing a lug l6 which is welded as at l! at its lower end to the rear side of the blade. This lug is formed of relatively heavy unyielding metal so as to be quite stiff and has its upper corner l8, which is closest to the socket l I, flared outwardly as indicated at l9. This lug is spaced from the body of the blade l0 throughout the major portion of its length a distance approximately equal to the thickness of the plowshare. The lug is located intermediate the socket H and the fingers and on applying the renewable edge to the plowshare the socket I l is first applied to the point and the blade swung or sprung toward the plowshare so as to position the lugagainst the rear face of the share. The flared corner l9 facilitates the insertion of the edge of the share between the lug and the body of the blade while the blade is being swung upwardly and rearwardly to position the heel portion of the share between the blade and the spring fingers 15. This lug serves to maintain that portion of the blade I!) between the socket and the spring finger in firm close-fitting engagement with that portion of the share that is adjacent the point even though this portion may be concavely shaped. As the lug does not extend upwardly above the top edge of the blade it does not interfere with the frog of the plow that is frequently located on the rear side of the plow only a short distance above the point.

Various changes may be made in the details of construction without departing from the spirit and scope of the invention as defined by the appended claims.

I claim:

1. A renewable plow edge comprising a blade adapted to be positioned along the face of any of different makes of plowshares and having a socket adjacent one end adapted to receive the point of the plowshare, a plurality of spring fingers secured to the blade adjacent the other end thereof extending upwardly above the top edge of the blade, the fingers adapted to be sprung when a plowshare is inserted between the fingers and the blade to retain the blade on the plowshare, and a contour lug secured to the rear side of the blade adjacent the socket intermediate the socket and the fingers, said contour lug being welded to the rear side of the blade and being formed of stiff unyielding material and terminating short of the upper edge of the blade, the contour lug being adapted when a plow is inserted between the lu and the blade to positively clamp the blade against the plowshare, the contour lug having only its upper corner closest the socket out-turned to serve as a mouth to receive the plowshare, the remaining part of the upper end of the contour lug being straight.

2. A renewable plow edge comprising a blade adapted to be positioned along the face of any of different makes of plowshares and having :a socket adjacent one end adapted to receive the point of the plowshare, a plurality of spring fingers secured to the blade adjacent the other 4 end thereof extending upwardly above the top edge of the blade, the fingers adapted to be sprung when a plowshare is inserted between the fingers and the blade to retain the blade on the plowshare, and a contour lug secured to the rear side of the blade adjacent the socket intermediate the socket and the fingers, said contour lug being welded to the rear side of the blade and being formed of stiiT unyielding material and terminating short of the upper edge of the blade, the contour lug being adapted when a plowshare is-inserted between the lug and the blade to positively-clan p the blade against the plowshare to force the blade against the plowshare.

* HERBERT J. WOOCK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Great Britain Sept. 23, 1935

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