US280471A

US280471A - Fbancis m

Info

Publication number: US280471A
Authority: US
Publication date: 1883-07-03
Anticipated expiration: 1900-07-03

Description

F. M. HAZLETON;

DEVICE FOR TURNING WRIST PIN$.

(Ho MOdQL) Patented July 3, 1888.

[V INVENTOR:

772 Jye TORNBYS WITNESSES UNITED STATES PATENT OFFICE.

FRANCIS M. HAZLETON, OF RED BLUFF, CALIFORNIA.

DEVICE FOR TURNING WRIST-PINS.

SPECIFICATION forming part of Letters Patent No. 280,471, dated July 3, 1883.

Application filed September 24, 1881.

To all whom it may concern:

Beit known that I, FRANCIS M. HAZLETON, of Red Bluff, in the county of Tehama and State of California, have invented a new and Improved Device for Turning Wrist-Pins, of which the following is a full, clear, and exact specification.

The object of my invention is to furnish a simple and efficient device by which the wristpins of crank wheels and shafts can be trued or turned down.

The invention consists in bearing blocks or boxes fitted with cutters, which blocks are to be applied to the wrist-pin and the shaft or wheel then revolved, as hereinafter described and claimed.

Reference is to be had to the accompanying drawings forming part of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure 1 is a perspective view of a half-box having cutters in accordance with my invention; and Fig. 2 is a cross-section of the complete box.

The half-boxes or brasses A are of any usual construction, adapted to take the place of those in use on the wheel or crank. To this end these halfboxes A are made to correspond externally to the form of the boxes in which the 0 journal to be trued up regularly runs, so that same as it usually revolves in its own box;

Thus a separate cutter-box will be required in each case, unless where a system ofj ournals and boxes are duplicated, as is usually the case in engine building. The inner or bearing face of each half-box is formed with a longitudinal groove, and in these grooves are fitted bars a,

(No model.)

of steel, that are formed on their outer faces with diagonal cutting edges 6, projecting slightly beyond the face of the boxes.

In use the boxes A are to be put in. place on the wrist-pin and keyed tightly. The crank is then to be revolved by hand, and the boxes set up from time to time until the pin is turned true. \Vith locomotives the cutterboxes A are to be applied in the regular box bearings and the engine run on the track or the wheel raised and revolved by hand or power.

This device is simple, inexpensive, and efficient. By its use the labor of removing a wheel or shaft when the pin becomes worn is saved.

I am aware that cutter-boxes similar to mine have before been used for truing up journals by revolving the box on the journal, the box being held by an independent clamping device in no way dependent on the usual box-bearings of said journal, and this I do not claim; but

What I claim, and wish to secure by Letters Patent, is-

1. A box made in two halves corresponding externally to theform and dimensions of the box of the journal to be trued up, and internally. provided with two sets of cutting-edges to each half-box, as shown, said box being adapted to be secured in the bearing usually occupied by the regular journal-box, for the purpose of truing said journal while revolving therein, as described.

2. The cutter-box A, in two parts, shaped externally to fit the bearings in which the box of the journal to be trued up rests, having 1011-.

gitudinal grooves in its semi-cylindrical inner face, provided with the cutters a 12, secured in said grooves, as shown and described.

FRANCIS MARION HAZLETON. Witnesses:

J USTUS W. HAMILTON, CHARLES LARSON.