US1692004A - Hand anvil - Google Patents

Description

R. C. TOLMIE Nov. 20, 1928.

HAND ANVIL Filed Feb. 9, 1925 Patented. Nov. 20, 1928.

narr'E'ofj Sram-si' RONALD C. TOLMIE, OF ROCK ISLAND, ILLINOIS, ASSIGNOR TO'DEERE 8a COMPANY, O MOLINE, ILLINOIS, A CORPORATION OF I'INOIS.

Application filed February My invention relates to a hand anvil to be more particularly employed in removing and replacing the led-gel' plates of guard fingers of the cutting apparatus of harvesters.

R-eplacement of ledger plates is a frequent necessity, because of dam-age received in the harvest, for ledger plates are rigidly held in position and the cutter bar, in operation, is in continuous motion, consequently when sticks or stones are caught between a ledger plate and a knife section, the suddenly applied force of such an interruption is destructive, particularly to the ledger plate, and it is exceptional that the lat-ter escapes damage. To remove a damaged ledger plate and substitute for it one in a perfect condition is an exceedingly vexatious operationiin the absence of proper tools, and the object of my invention is to provide a hand anvil having a countersink in vits face conforming to the shape of the underbody of a hai'vester guard finger whereby the operation of removing and replacing a ledger plate is facilitated.

Referring to the drawings in which similar numerals indicate identical parts- Figure 1 is a perspective view of my device.

Figure 2 is a perspectiveview illustrating the application of my device to one of its uses.

J'igure 3 is a reduced sectional view showing my device and the guard finger of a harvester in position for the removal of a ledger plate. i

Figure et is a plan view of part of the finger bar of a harvester.

F igure 5 is a perspective view of a guard finger, and

Figure 6 is a bottom perspectiveview of Figure 5.

My device is to be used primarily for removing worn, damaged or broken ledger` plates from the Cutting apparatus of a harvester and replacing them with perfect plates, and while this operation is performed .by positioning the anvil on the ground or floor beneath the cutter bar of a harvester, it can be utilized with the cutter bar of a mower when the latter is raised and held in a Vertical position. TheV anvil 1 is a cast body with a, preferably, rectangular base in which is a 9, 1925. Serial No. 7,800,

longitudinal groove 2 and a transverse groove 8 to provide a better hand grip and also to lessen the weight4 of the anvil which otherwise would be excessive.

The face Zl of the anvil Vl has a rearwardly Vinclined surface for the greater part of itsthe face 4, and to one side of the groove 5 is a stud 8, preferably of steel.

Then itis desired Ato remove a ledger plate, the anvil 1 rests on the ground, or on a floor, beneath the 'guard finger from which the ledger plate is to be removed, the finger 10 resting snugly in the grooves 5 and 6, With the rivet 11 directly above the opening 7, as shown in Fignre 3; a punch 12 and hammer 13 are utilized to drive the rivet' 11 which drops through the opening 7, freeing the ledger plate so that it can be readily removed;

a new ledger plate is then positioned, and a new rivet isV inserted, the head of the rivet filling in the opening in the ledger plate, the anvil l is then handled to place the stud 8 against the rivet head where it is firmly held orntcrz.. v

until the end of the rivet., projecting below the guard finger, is upset by use of a haminerso that the new ledger plate is rigidly secured in position.

My device is simple, economical, and of convenicnt size to be carried into the field as part of the tool equipment of a' harvester.

VVhat I claim is- 1. A hand anvil having a longitudinal and atransverse groove in its face7 the longitudi-i nal groove widening and increasing in depth toward the transverse groove, and a Vertical hole through the anvil adjacent the interseci tionof said grooves.

V2. A hand anvil having a longitudinal and a transverse groove in its face, the longitudinal groove Widening and increasing in depth said grooves, and a Stud in the face of the 10 toward the transverse groove and decreasng anvil to one side of the center thereof. v in depth rearward therefrom, and a Vertical 4. A hand anvil having a longitudinal hole through the anvil adjacentthe intersecgroove in its face Widening toward one end, a

tion of said grooves. Vertical hole through said anvil intermediate 3. A hand anvil having' a longitndinal and the length of the groove, and a Stud project- 15 a transverse groove in its face, the longitudiing from the face of the anvl at one side of nal groove Widening rearvvardly, a Vertical the groove. hole in the anvil adjacent the interseetion of RONALD C. TOLMIE.

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