US171233A - Improvement in machines for cutting iron - Google Patents

Description

J. 1 LAKEY & J. a. MILLS.

MACHINE FOR CUTTING IRON. No.17'1,Z'3 3. Q Patented Dec. 21,1875.

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N-PETERS, FHQTO-UTHOGRAPNER, WASHINGTON. D C.

UNITED STA S PATENT OFFI IMPROVEMENT ,INMACHINES FOR CUTTING IRON.

Specification forming part of Letters Patent N 0. 171,233, dated December 21, 1875; application filed May 22, 1875.

To all whom it may concern:

Be it known that we, JOHN H. LAKEY and JAMES G. MILLs, of Turner Junction, Du Page county, State of Illinois, haveinventecl 'new and useful Improvements inMachine for Cutting Oold Iron, of which the following is a full description, reference being had to the accompanying drawings, in which- Figurel is a plan view; Fig. '2, a front elevation Fig. 3, a detail in section, showingthe mode of attaching the saw; Fig. 4, a top or plan view of the clamping device, and Fig. 5 an end view of the same.

This invention consists in providing a frame which carries the cutting-toolso that it can be shaft A. At the front end of these arms, and

rotating therein, is another shaft, D, upon which are two driving-pulleys, E E. Upon this shaft D is secured the cutting-tool F. The center of the cutting-tool F is countersunk or recessed, as shown, and it is secured to the shaft by means of suitable collars e f, the end of the shaft being riveted down, or it may be secured by a nut. The construction is such that there is no projection upon the face of F, so that the bar of iron may be cut lengthwise, and brought up close to the face of the cutting-tool at the center thereof, if necessary. The cutting-tool F has a smooth edge, and it can be made from soft fire-box steel. It may be about three feet in diameter, and about a quarter of an inchthick. G G are two standards secured to the bed H of the machine. They are connected at their upper ends by the cross-bar I. G G I may be made of asingle piece. J is across-bar secured to the arms 0. The cross-bar I is provided with screw-threaded holes, through which passes the screw K, on the top of which is a beveled friction or gear wheel, L. L L are two beveled or friction'gear'wheels, located upon a small shaft,M, which is supported in suitable bearings. This shaft M may be driven by a chain running over pulleys N N, or otherwise. O is a lever for the purpose of bringing either one of the beveled wheels L L into contact with the wheel L, as maybe desired, for the purpose of rotating the screw K in either direction, in order .to raise or lower the cutting-tool, without interfering with its operation. P is an adjustable guidefor the pur-- erated by hand, by means of a crank, 12, and

other suitable well-known devices. U is a revolving table locatedin a recess in the table T. It is rotated by means of a crank, c, and other well-known devices. The crank a, with other devices, operates the table R. The surface of the three tablesR T U is in the same plane. 01 is a gear-wheel, designed to be removed from the machine when in use, and to be attached thereto for the purpose of being used in connection with the small drivingwheel h, for the purpose of rotating the shaft D slowly While sharpening the cutting-tool F. V is a clamping device, by means of which the'har is secured to the revolving table.

We do not limit ourselves to the specific clamping devices shown, as others may be used.

In use, the shaft D is driven by belts passing over the pulleys B, or by other suitable means.- The table U is designed to be used when cutting at an angle, and will be found especially useful in cutting railroad-rails for frogs,

as well as for other purposes, where an angular cut is required. In such cases, the bar to be cut is to be secured to the-table U by means of suitable clamping devices; then the table is to be turned by means of the crank 0, until the bar is brought to the desired angle, which may be determined by a scale upon the table, or otherwise then, by means of the crank collar e.

a a I v 171.233

1), the two tables T U are moved until the bar is brought to the edge of the cutting-tool B; then by means of the crank (it, which can be rotated by machinery, if desired, the table R and the other tables connected thereto will be of the bar at suitable intervals before commencing the longitudinal cut, in order that the portions cut away may fall down, one after an other; otherwise that portion of the bar upon the inside of the saw would run against the The vertical movement of the front of the frame and the cuttingtool is essential in performin g this operation, thereby making the end of the saw kerf perpendicular instead of curved, as would be the case if the cutting-tool did not have this vertical movement. While straightening the end of the kerf, of course the bar must be held stationary. This vertical movement will be found desirable for other purposes. For example, in cutting rails for frogs, the head of the rail must be out, but not the flange, and this can be done by sufficiently elevating the cutter.

It is evident that the tables themselves might be raised and lowered, but this construction would not be desirable.

The front ends of the bars 0 and their connections are raised and lowered by means of the screw K and the wheels L L L.

It is necessary to have strongclamping devices to hold the rail in place'while it is being out. These are shown in Figs.4:and 5,in which represents one portion of the clamping device V. It is permanently secured to the table U, and at one end is curved up, as shown at j, 'formin g a recess between the curve and the bed of the machine-to receive the flange of the rail. The other end is bent up, as shown at k. l is the upper portion of the clam ping device, so formed that one end, m, will project over and partially encircle the head of the rail,

while the other end will rest upon it, and is provided with a flange, n. p is a strong screw, by means of which l is clamped down upon the rail, the lower end passing into a female screw in the bed of the machine. 1 represents a rail.

In Fig. 4 are represented cuts which must be made in forming a frog.

The machine can be used for cutting irons of various forms, but will be especially useful in all kinds of work requiring angular cuts.

What we claim as new, and desire to secure by Letters Patent, is as follows: 7 1. The arms 0 (J and shaft D, carrying the cutting-tool F, in combination with the supports G, bars I J, screw K, wheels L L L, and shaft M, substantially as and for the purposes set forth.

2. The cutting-tool F, having a central depression' or recess upon its face, in combination with the shaft 1) and collars 0f, substantially as and-for the purpose specified.

3. In a machine for cutting metals, the ro-. tating table U, in combinationwith the sliding ,tables T and R, substantially as and for the purposes specified.

4. The adjustable guide P, pivoted on the shaft carrying the cutting-tool F, whereby the guide swings on a circle corresponding with the outer edge of the cutting-tool, substantially as described.

JOHN H. LAKEY. JAMES e. MILLS.

Witnesses I E. A. WEST, O'. W. BOND.

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