US695528A - Engineer's leveling-rod. - Google Patents

Description

Patented Mar'. I8, |902.

J. H. B'ECKLEY. ENGINEER'S LEVELING R00.

(Application glad Jan. 9, w02.)

' (No Model.)

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SPEGIFIGA'IION forming part of Letters Patent No. 695,528, dated March 18, 190;?. Application filed January 9, 1902.v Serial No, 89,03?. (No model.)

To aZZ whom it may concern:

Beit known that LJOHN HOWARD BECK- LEY, acitizen of the United States, residing at Lebanon,in the county of Lebanon and State of Pennsylvania, have invented certain'new and useful Improvements in Engineers Leveling- Rods; and I do declare the followingto be a full, clear, and exact description of theinvention, such as will enable others skilled inthe art to which it appertains to make and use the same.

Theinvention relates to engineers levelingrods.

The object of the invention is to provide a simple, durable, and comparatively ineXpensive means wherebythe target maybe easily and expeditiously clamped in adjusted position even when the ngers of the engineer are in a benumbed state. p

With this and other objects in view the invention consists of certain novel features of construction, combination, and arrangement of parts, which will be hereinafter more fully described, and particularlypointed out in the appended claim.

In the accompanying drawings, Figure lis a rear view, partly in section, of a target, illustrating my invention, the rod being shown in dotted lines; and Fig. 2 is a top plan view of the target and rod.

Referring to the drawings, 1 denotes the target, which may be of any Well-known or approved construction and which is provided on its rear side with a guideway 2formed by the vertically-arranged angle-plates 3 and 4.

5 denotes a cam-lever pivoted between lugs 6,-formed integral with `the end of the plate 4 and extending through an aperture 7, formed in said angle-plate. The ends of the angleplate are provided with slots 8 and 9, through which project studs lO of a flat spring ll, which spring is adapted to engage the rod 12 and be engaged by the cam-lever. In the position shown in Fig. l the lever is depressed and the spring forced against the rod, whereby the target is held in adjusted position. I/Vhen it is desired to change the adjustment, the free y end of the lever is raised, thus allowing the spring to straighten and free itself from fricvated to the position `shown in dotted lines` in Fig. 1, it will be observed that the spring will engage that part of the cam-shaped head of the lever denoted by the letter a and tend to hold the lever in that position, so as to be capable of being quickly grasped for the pur# pose of clamping the target in its new adjustment. i f

From the foregoing description, taken in connection with the accompanyingdrawings, the construction, mode of operation, and advantages of the invention will be readily understood without requiring an extended ex-` planation. Y

Various changes in the form, proportion, and details of construction may be made within the scope o f the invention without departing from the spiritor sacrificing any of the advantages thereof.

Having thus described my invention, what I claim, and desire toV secure by Letters Patent, isv The combination with a targethaving guideflanges, one of which is provided with an aper` ture intermediate its ends and with slots at its ends, of a rod upon which-said iianges are mounted to slide, a lever pivotedptoone of said iianges and projecting through the aperture arranged intermediate its ends, a flat spring mounted on the inner side of the flange and having studs which project through the slots at the ends of the flange, said spring being arranged Within the path'of movement of the lever, whereby in one position of the lever, the spring is clamped to the rod to hold the targetin adj usted position, and in another position of the lever, the spring automatically unclamps itself from the rod and holds'the lever in elevated position.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN HOWARD BECKLEY. Witnesses:

WM. E. BQWMAN,

W. B. WEIRECH.

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