US624362A - Leveling-rod - Google Patents

Description

UNITED STATES PATENT OFFICE.

JOHN S. MILLIKIN AND WWI-EUGENE BOVEN, OF ONTARIO, OREGON.

LEvr-:LING-Roo.

SPECFI'CATION forming part of Letters Patent No. 624,362, dated May 2, 1899.

Application iiled April 22, 1898.

T0 all whom, t may concern.-

Beit known that we, JOHN S. MILLIKIN and WEUGENE BOWEN, of Ontario, in the county of Malheur and State of Oregon, have invented a new and Improved Leveling-Rod, of which the following -is a full, clear, and exactdescription.

Our improvement relates to leveling-rods, and has for its object to enable differences in elevations between two points to be read directly on the rod Without any computation.

The invention comprises a rod or support having two endless tapes mounted thereon and capable of adjustment longitudinally, each tape having a target attached thereto and having a scale marked thereon reading from zero at the target in each direction.

The invention also-consists of novel features of construction, which will be hereinafter described, and particularly pointed out in the claims.

Reference is to behadto the accompanying drawings, forminga part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is a sectional elevation of our device. Fig. 2 is a front elevation, and Fig. 3 is a side elevation, of the same.

In using the ordinary leveling-rod it is necessary to make a computation for each elevation taken in order to determine the elevation of that point above and below any particularpoint. In setting stakes for cutting or filling, which is a common job of leveling, it is necessary to make a computation at each point to determine the amount of ill or cut necessary to bring the surface to the proper elevation. With our device it is possible to read the exact amount of cut or ill directly'from the rod without any computation. In consequence of this the work may be done more rapidly and with less possibility of mistakes. It is also possible for a person to use this rod and to work satisfactorily without having the special training and education which is ordinarily necessary in doing this work by the present means.

Our rodconsists of a body A, which is preferably made of wood and of any suitable length.

This body A is provided with recesses on op- 4 posite sides adapted to receive the tapes B Serial No. 678,470. (No model.)

and C, so as to keep the outer surface of the tapes below the outer edges of the rod, thus preventing rubbing of the tapes upon any object and their consequent defaceinent. At each end the body of the rod has a hole cut through it, connecting the opposite sides, within which hole are mounted the rollers Il, which carry the tapes. The tapes are provided with targets D and E of any usual or preferred construction. The tapes are scaled in each direction from the targets, the targets being placed at zero. It is evident that the tapes and the targets attached thereto may be readily elevated or depressed, as desired. In using our device the target upon one of the tapes will be set to correspond with the grade desired. This target and the tape carrying l it will be clamped in place, so it will not be .accidentally moved. The. target upon the other tape will then be set at such an elevation as may be necessary to bring it in line with the level. As the tape is laid out in each direction from the target at zero, the diierence in elevation between the point where the rod is .set and the required grade may be read directly from this tape and will be plus or minus, as the target is below or above the target upon the other tape. In this way it may be determined at once whether a cut or. iill is necessary and the exact amount of the same. The tapes -B and C maybe made of any suitable material, as cloth or metal.

For convenience, Where it is desired to use the rod as an ordinary leveling-rod, one side edge thereof may be laidV out with the usual scale G and target F. This scale G will be used in the ordinary manner. The flanges or beads a upon each side of the tapes B and O serve to protect the figures upon the tape from accidental contact with other bodies and from being in consequence rubbed oi or disigured. Anyconvenient clampingmeans may be used. to secure one or the other of the tapes in position-for instance, as shown in Fig. l, a spring I, attached to one of the anges a and bearing uponthe tape. The

use of double tapes, as herein described, enables leveling to be done more rapidly than possible with an ordinary rod and increases the accuracy of the work, as well as render- 2. A leveling-rod baving two independent1y-movab1e endless tapes located side by side on the same face of the rod and figured from zero in opposite directions, a target secured to each tape at zero, rollers mounted upon each end of the rod and carrying the ltapes, and means for clamping one of the tapes to the rod, substantially as described.

JOHN S. MILLIKIN. W EUGENE BOWEN. Witnesses:

U. G. POGUE, W. M. MILLER.

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