US2535722A - Surveyor's monument setter - Google Patents

Description

Dec. 26, 1950 R J cooKE 2,535,722

SURVEYORS MONUMENT SETTER Filed May 10, 1948 IN V EN TOR.

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A TTORNEY Patented Dec. 26, 1950 UNITED STATES PATENT OFFICE.

SURVEYURS MONUMENT SETTER Raynold J. Cooke, East Tawas, Mich. ApplicationMaylll, 1948, Serial No. 26,015

(01. sa-zm) 4 Claims.

This invention relates: to monument setters such as: used by civil engineers, surveyors, and

other craftsmen, and has for its object the. production of a simple, practical, and substantial monument setter, which when once set, can be swung clear to permit unobstructed placing of the. monument, and then swung back to exact original position to the required center.

Another object isto design a monument setter which can be positively set and reset as many times as desired, which requires a minimum of maintenance and/ or upkeep.

A further object is to provid a monument setting mechanism which can be readily handled and set up, and which includes a rotatablehorizontally adjustable plumb bob assembly which can be swung to permit unobstructed digging and placing of a concrete monument, after which the plumb bobassembly can be swung back to original position.

Still a further object is to design a monument setter which need not be exactly vertical to secure proper setting, which eliminates the necessity of re-adjustment of the permanent marker after being once set, because the point and original center is always visible by position of previously set and adjusted plumb bob.

A further object is to design a relatively inexpensive monument setter composed of few parts, all of. sturdy, substantial construction, and E which can be readily manufactured and assembled.

With the above and other objects in view, the present invention consists in the combination and arrangement of parts, hereinafter more fully described, illustrated in the accompanying drawing, and more particularly pointed out in the appended claims, it being understood that changes may be made in the form, size, proportion, and minor details of construction, without departing from the spirit, or sacrificing any of the advantages of the invention.

In the drawing:

Fig. 1 is a side-elevational view showing the instrument set up for use, the broken lines illustrating the outward adjusting of the plumb bob.

Fig. 2 is a top, plan view, the broken lines illustrating the swinging of the plumb bob arm.

Fig. 3 is a transverse-sectional view taken on the line 33 of Fig. 1.

Referring now more particularly to the drawing in which I have shown the preferred embodiment of my invention. Th numeral 5 comprises a hollow, preferably tubular body member, the lower end of which is pointed as at 6 so that it maybe readily driven into the ground by wooden maul (not shown) or the like. A fitting l is-provided on the upper end of the member 5, and a setscrew 8 is provided therein in the usual'manner.

A hollow post 9 is adjustably mounted in the upper end of the member 5; it is vertically ad J'ustable therein and is held in position by means of the setscrew 8, which is formed with wings H) for easy manipulation thereof.

A stopmember H is secured to the upper end of the post 9 by means of a setscrew I2, said member being formed with an offset shouldered section l3 which serves as a stop, and in a manner to be presently described.

An adjusting rod M is rotatably' mounted in the post 9, and a collar C is fixed thereon, an arm support [5 being provided on the upper end of said rod, and a transversely extending arm 16 is slidably mounted in said support.

A clamp H is fixedly mounted on the arm IE at a point intermediate its length, and a tangent screw [8 is also mounted in the support l5 and is provided with a knurled head l9 for easy roanipulation, said screw having threaded engagement with the clamp I! for the purpose of making minute adjustments after the arm l6 has been roughly set at approximate position.

The collar member C is fixedly mounted on the rod M and bears on the member ll, said collar being formed with a split oifset shoulder 2! as shown, and an adjusting screw 22 is provided in the shoulder 21 for minute adjustment after the mechanism has been roughly set.

A small opening 23 is provided on the outer end of the arm 16, and a cord 24 is threaded therein, a setscrew 25 being provided on the end of the arm, so that the cord may be secured in set position.

A plumb bob 2G is provided on the lower end of the cord 24, and this arm and plumb bob can be swung to position to provide an unobstructed digging, tamping, or monument setting area, and then swung back to identical original position over the marker M, without the necessity of resetting or adjustments of any nature.

The device can be readily disassembled and compactly bundled for transportation or storage, and in use, the marker M is first located; the pointed end 6 of the barrel 5 is then driven into the ground at a point not greater than the length of the arm l6 from the marker M.

The surveyor then places the post 9 in the member 5 and tightens the setscrew 8 to secure the members in set position. He then. mounts the rod M in the barrel 9 and inserts the arm l8 in the support [5. The cord 24 with plumb bob attached, is then placed in position and the screw 25 tightened to securely suspend the plumb bob in set position.

The arm 16 is then swung so that the plumb bob is roughly over the marker to be permanented, with the end of the adjusting screw 22 in contact with the one face of the shoulder l3; the screws 8 and 28 are then tightened to secure the barrel 9 and prevent rotation of the rod [4, the arm l6 being free for extension or retraction by means of the tangent screw l3.

With the plumb bob directl over the marker M, the holding screw 28 is tightened toclamp the member 2! and secure the screw 22 in set position, and the marker M is now ready for replacement.

In order that the workman may have an unobstructed working area for digging etc., the arm I8 is swung clockwise out of the working area, and the setscrew H! is then tightened to hold it in set position; the hole is then dug and the monument or other permanent marker (not shown) is then set.

The operator then loosens the setscrew l2 and swings the arm back to original setting, checking to see that the screw 22 is in contact with the shoulder l3; he then tightens the setscrew :2. The original center of the marker is relocated, and the tamping of the earth around.the monument can then be completed. No adjustment of the monument center is necessary after the earth has been tamped, as the center is at all times shown by the plumb bob.

The operation is simple and easy; it can be quickly accomplished, and there is no readjusting necessary.

From the foregoing description, it will be obvious that I have perfected a very simple, practical, and inexpensive surveyors monument setter, which can be compactly folded and stored, which eliminates the necessity of resetting with the possibility of error incident thereto, and which can be swung to leave the entire area clear and free for digging and setting of the monument at the point desired.

What I claim is:

l. A surveyors monument setter comprising a sectional, hollow, telescopic stake having a rotatably adjustable stop collar mounted on the upper end thereof, a raised stop on said stop collar, a vertically adjustable rod mounted in said stake, a collar fixed thereon and engageable with said stop collar, an offset shouldered section on said second collar, a horizontall disposed adjusting screw mounted in said offset shouldered section and engageable with the raised stop for circumferentially adjusting said rod in said stake, and means for locking the adjusting screw in set position.

2. The combination defined in claim 1 in which the offset shouldered section is horizontally split, and the locking means comprises a screw for securing the adjusting screw in set position.

3. The combination set forth in claim 1 in which an arm support is provided on the upper end of the vertically adjustable rod, a transversely extending rod slidably mounted in said support, a clamp fixed thereon, and an elongated screw journaled in said support and engageable with said clamp for moving said rod horizontally in said support when the screw is actuated.

4. A surveyors monument setter comprising a sectional, hollow stake having a stop collar onthe upper end thereof with an offset shouldered stop formed integral therewith, a vertically disposed rod adjustably mounted in said stake and formed with a split, ofiset shoulder circumferentially engageable with said offset shouldered stop, means for circumferentially adjusting said rod in said stake, an arm support on the upper end of the rod, a transversely extending rod slidably mounted therein, a clamp fixed on said rod, a tangent screw in said support and having threaded engagement with said clamp for moving said rod in the support when said screw is actuated.

RAYNOLD J. COOKE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 397,286 Hansel Feb. 5, 1889 449,920 Thom Apr. '7, 1891 503,238 Howell Aug. 15, 1893 772,289 Newman Oct. 11, 1904 879,052 Jeranek Feb. 11, 1908 2,066,699 Skelton Jan. 5, 1937 2,176 214 Falge et al. Oct. 17, 1939 2,343,688 Maxey Mar. '7, 1944 2,358,010 Holmes Sept. 12, 194%

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