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Publication numberUS468983 A
Publication typeGrant
Publication dateFeb 16, 1892
Filing dateNov 2, 1891
Publication numberUS 468983 A, US 468983A, US-A-468983, US468983 A, US468983A
InventorsChristopher Stephans
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Christopher stephans
US 468983 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)


No. 468,983. Patented Feb. 16, 1892.




SPECIFICATION forming part of lhetters Patent No. 468,983, dated February 16, 1892. Application filed November 2, 1891. Serial No. 410,633. (No model.)

To aZZ whom it may concern.-

Be it known that I, CHRISTOPHER STEPHANS, a citizen of the United States, residing at Washington, in the county of Washington and State of Pennsylvania, have invented certain new and useful Improvements in Oil-Well Counter-Balances and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

The'object of my invention is a counterbalance connected to the walking-beam of an oil-drilling plant or apparatus for the purpose of lessening the shock when the tools drop, and also to lessen the shock in raising the tools after each drop."

In the accompanying drawings, Figure 1 represents my invention as affixed to an oil- Well-drilling rig. Fig. 2 is my counter-balance, shown in full length and side view. Fig. 3 is a top view of Fig. 2. Figz lis a sectional view of the Wooden plug inside the spring at the lower end, marked D in Fig. 2. Fig. 5 is atop view of Fig. 4:, and Fig. 6 is the metallic plate used at the top of the counter-balance and is marked D in Fig. 2.

A. is the walking-beam.

B is the samson-post.

A is the pitman.

A is the rod to which the rope is connected.

D is a coil-springinside the rods B B and extends from the disk 1 from below to the plate D above.

d is the lifting-rod inside the spring D and terminates at the top in a ring for other at tachments. At the bottom is a burr d. The rods at the bottom have feet I) b and at the top are threaded for the burrs c c.

ing thread (1 cut thereon for the burr (1 This thread (1 should be long enough for regulating the tension on the spring D.

In setting the spring for active Work the operator should see that the spring D is drawn up, so that it Will be effective for the work to be accomplished. The wooden piece D is made hollow,so that the rod d will go through it, so as to stiffen the lower part of this spring D.

I place this counter-balance, as will be seen I by reference to the drawing Fig. 1, between the samson-post and the pitman A The object in this is to cushion the fall of the tools and at the same time to materially aid in lifting them. I think this is desirable and will also save the Wear and tear of the tools, as the shocks will be very much reduced in effect, and as the spring D will be powerful, or should be to be effective, a much less power will be required in raising the tools at each stroke. 7

Having thus described my invention, What I claim,and desire to secure by Letters Patent of the United States, is-

1. In a counter-balance, the combination of the spring D, rod d, plate diburr d, rods 13, having feet 1), bolts 17 burrs c,'and plates D substantially as and for the purpose set forth.

2. In a counter-balance substantially as herein described, the combinatian of the rods B, having feet 1), bolts b rod cl, spring D,

plates 61 D rod D and walking-beam A, as

for the purpose set forth.

3. In a counter-balance, the combination, with the post 13, the walking-beam, and the pitman connected to said beam, of the upright bars rigidly secured to a base E the liftingrod operating between said bars, the coiled spring on the rod, and the connecting-rod D adapted to be adjusted in the walking-beam, substantially as described.

Intestimony whereofI affix my signature in presence of two witnesses.




Cooperative ClassificationF04B9/14