US815178A - Pump-rod clamp. - Google Patents

Description

' g No. 815,178.

j UNITED. STATES PAT NT ornron- Specification of Letters Patent. Application filed October 31,1905. Serial No. 285,367.,

Patented March 13, 1906.

- Tau/ll whom it may concern} Be it known that 1, ANDREW KNOOKER,a citizen of the United States, and a resident of Humboldt, Allen county, Kansas, have.

invented certain new and useful Improvements in Pump Rod Clamps, ofwhich the following is a specification containing a full, clear, and exact description, reference being had to the accompanylng-drawings, forming a part hereof. I 1

My invention relates to pump-rod clamps; and the object of my invention is to provide a simple, inexpensive, and easily-operated clamp to be applied to pump-rods for clamping the same and maintaining them elevated and in the position they assumeat the upper 1 end of the stroke.

In oil and other deep wells it is sometimes necessary to lock the pump-rod in elevated position or in the position it assumes when at the upper end of its stroke, and as the pumprod is of some length it is ,quite heavy and requires considerable power to maintain it in elevated position, and I propose to provide a simple clamp to be engaged on the pump-rod and to rest on top of thepump-cylinder for holding the'pump-rod elevated. v To the above purposes my invention consists in certain novel features of construction and arrangement of parts, which will be hereinafter more clearly set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which, Figure 1 is a side elevation of the upper end of a pump-cylinder, showing the pump-rod projecting upwardly therefrom, and my im proved clamp engaged upon said rod. Fig. 2 is a plan view of the clamp applied to a pump-rod. Fig. 3 is a vertical section taken on the line 3 3 of Fig. 2 and showing the clamp loosely mounted upon the pump-rod.

Referring by numerals to the accompanying drawings, 1 indicates the upper end of a pump-cylinder, 2 the usual gland or stuflingbox thereon, and 3 the pump-rod.

My improved clamp comprises a'block 4:, in

one side of which is formed a vertically-arranged semicircular recess 5, in which the pum -rod is engaged when the clampis applie' thereto.

6 indicates a U-shaped yoke, the parallel arms 7 of which pass horizontally through suitably-formed apertures in the ends of the block 4. i a

8 indicates a block, through the ends of which are formed suitable apertures, through ends of said arms arescrew-threaded and re- 7 ceive nuts 9.

10 indicates a clamping-plate that is arranged between the pump-rod 3 and the block. 4:, and in the ends of said plate are formed suitable: apertures through which the arms 7 pass.

Located upon the arms 7 and interposed between the plate- 10 and block 4 are expansive coilsprings 1 1.

12 indicates a set -'screw that passes through the screw,threaded aperture 13, formed in the center of the block 8, and the point of said screw .bears againstthe side of the plate 10 opposite from the side or face that engages the pump-rod 3. The outer end of the set-screw 12 is provided with a square head 14, that is adapted to be engaged by-the socket of a suitable wrench, as shown by dotted lines in Fig. 1.

My improved clamp is assembled on top of the pump-cylinder around the pump-rod 3, and as long as the set-screw 12 is inan unset or withdrawn position in the block 8 the pump-rod is free to move vertically through I ment, the operator locates a suitable wrench on the squared end 14 of the set-screw and so mani ulates the set-screw as that it is moved through the block 8, and, as a result, the clamping-plate 10 will be brought against the surface of the pum -rod 3', and said rod will be very tightly c amped between said plate and block 4. This, very rigidly engages the clamp upon the pump-rod, and as said clamp rests upon the top of the pum cylinder the rod will be rigidly held at fie upper end of its stroke. 1

When the clamp is loosened from the pump rod, the expansive coil springs 1 1 move the clamping-plate 10 away from the pump-rod 3 and at the same time move the block 4 away from said rod, so that the parts 7 of the clamp will not stick to the pump-rod.

My improved clamp is applicable for use on all classes of pumps, is easily applied, quickly engaged, and being composed of a minimum number of parts will not readily get out of order.

I claim 1. A pump-rod clamp of the class described,

IIO

the yoke, and a set-screw passing through said last-mentioned block; substantially as specified.

2. A pump-rod clamp, constructed With .t block, a yoke carried thereby, a block mounted upon the arms of the yoke, a set-screw passing through said last-mentioned block, and a clamping-plate engaged by said setserew for clamping upon the pump-rod; substantially as specified.

3. A pump-rod clamp, constructed with a block adapted to engage on the pump-rod, a yoke carried by said block, a second block mounted upon the arms of the yoke, a setscrew passing through said last-mentioned block, a clamping-plate arranged upon the arms of the yoke and engaged by the point of the set-screw, and expansive coil-springs arranged between the ends of the first-mentioned block and the clamping-plate; substantially as specified.

4. The combination With a pump-rod, of a block constructed to engage on said rod, a

yoke carried by said block, a second block 1 upon the yoke between the pump-rod and the l second-mentioned block against which plate the point of the set-screw bears, and ex )ansive coil-springs located upon thearins oi the yoke between the clan1ping-plate and the first-mentioned block; substantially as specified.

In testimony whereof I have signed my name to this specification in presence of two subscribing Witnesses.

ANDREW KNOCKER.

Witnesses 0. WV. HALL, CHAS. SoI-IAFFNER.

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