US2164283A - Ledger plate anvil - Google Patents

Description

June 27, 1939. E. L. MULVANEY LEDGER PLATE mwn.

Filed May 4, 1937 .MLMZMh INVEN m ATTORNEYS WITNESS Patented June 27, 1939 LEDGER PLATE, ANVIL Edward L. Mulvaney, Butte, Mont., assignor of one-eighth to John E. Phemister, one-eighth to Mamie 0. Phemister, and one-half to George D. Curtis, all of Butte, Mont.

Application May 4,1937, Serial No. 140,743

1 Claim.

This invention relates to ledger plate anvils of the type employed in removing and replacing the ledger plates of guard fingers of harvester sickle bars.

Ledger plates are riveted rigidly to the guard fingers of the cutter bar and consequently when debris is caught between a ledger plate and a knife section the ledger plate is usually damaged. The replacement of a damaged ledger plate with one in perfect condition is very difficult in the absence of proper tools.

With the above in mind an object of the present invention is to provide a hand anvil having spaced openings to interchangeably receive the point of a guard finger, an anvil upon which the guard and damaged ledger plate may be supported while a rivet is being driven out or a new rivet headed up, and a handle for applying pressure to rigidly hold the anvil in place during the replacement of a damaged ledger plate.

A further object of the invention is to provide a hand anvil of this character which will be formed of a few strong, simple and durable parts, which will be inexpensive to manufacture, and. which will not easily get out of order.

With the above and other objects in view the invention consists of certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood that various modifications may be resorted to within the scope of the appended claim without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawing forming part of this specification,

Figure 1 is a side elevation of an avil constructed in accordance with the invention, and shown in position for heading up a rivet in a replaced ledger plate.

Figure 2 is a front view of the anvil turned through an angle of degrees from the position shown in Figure 1 to permit of a rivet being driven out of a damaged ledger plate.

Figure 3 is an end elevation of the hand anvil looking toward the left end of the anvil in the position shown in Figure 1.

Figure fl is a plan View of the anvil and handle assembled.

Referring now to the drawing in which like characters of reference designate similar parts in the various views, Ill designates a conventional guard finger, I I the ledger plate and I2 the ledger plate securing rivet, of a conventional mowing machine cutter bar.

By referring to Figure 4 it will be seen that an anvil constructed in accordance with the invention comprises a base plate I3 having one end bent upwardly to provide an eye I4, the opening I5 of which is adapted to receive the point of the guard finger. An eye I6 is formed integral with the edge of the eye I4 at the straight end portion of the plate I3, and is offset from one side of the longitudinal center line of the plate and the opening I! of this eye is also adapted to receive the point of the guard finger.

The anvil head I8 is formed of a substantially fiat plate that extends substantially parallel to the base plate I3 and is spaced therefrom, and integrally secured thereto by a bracket arm I9 which is offset from the other side of the longitudinal center line of the plate. The top face of the head extends substantially in alignment with the bottom of the opening I5 of the eye I4 and the lateral edge of the head extends substan tially parallel with the bottom of the opening Il in the eye I6 when the base plate is turned through an angle of 90 degrees to the right from the position shown in Figure 4. The inner face of the head I8 is cut away obliquely as shown at 20.

A long handle 2| is provided with a forked end 22 which is detachably connected to the base plate l3 by a bolt 23.

In use, when it is desired to head up the rivet I2 of a replaced ledger plate II, the point of the guard finger is inserted in the opening I5 of the eye I4 as shown in Figure 1. The anvil head I8 thus is positioned underneath the ledger plate in abutting contact with the rivet. The handle 2| is pulled upwardly by the operator to rigidly hold the anvil head against the ledger plate and rivet while the rivet is being headed up.

When it is desired to hammer out the rivet of a damaged ledger plate the point of the guard finger is placed in the opening ll of the eye I E and in this position the edge 24 of the anvil head engages the guard finger beyond the rivet I2 so that the rivet may be hammered out and be dislodged through the space between the anvil head I8 and the base plate I3.

From the above description it is thought that the construction and operation of the invention will be fully understood without further explanation.

What is claimed is:

A hand anvil for replacing damaged ledger plates including a base plate having one end directed at an angle to the plate, an eye formed in said end offset laterally from the longitudinal center line of the base plate, said eye being PATENT OFFICE adapted to receive the point of a guard finger when a rivet is to be driven out, an eye formed in said end substantially at the longitudinal center line of the base plate adapted to receive the point of a guard finger when a rivet is to be headed up, a bracket arm projecting from the base plate on the same side thereof as the offset end and disposed laterally of the longitudinal center line of the base plate, and a flat plate-like anvil on the outer end of the bracket arm disposed substantially parallel with the base plate, there being a space between the anvil and the base plate, the edge of the anvil and the base

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