US843597A - Seat for puppet or foot valves of pumps. - Google Patents

Description

No. 843,597. )PATENTED FBB.12,190'7.

L.'M. GERWE.

SEAT FOR PUPPBT 03 FOOT VALVES 0F PUMPS- APPLICATION FILED JULY 7, 1905.

i A and UNITED STATES PATENT @FFTGE.

SEAT FOR PUPPET OR FOOT VALVES OF PUMPS- ?ATQ. 843,597.

Specification of Letters Patent.

Patented Feb. 12, 1907 Application filed July'l, 1905. Serial No. 263,683.

To all whmn it may concern.-

Be it known that I, LOUIS M. GERWE, a citizen of the United States, and a resident of Davenport, in the county of Scott and State of Iowa, have invented certain new and useful Improvements in Seats for Puppet or Foot Valves of Pumps, of which the following is a full, clear, and exact description.

My invention relates to the seats of puppet or foot valves, particularly of domestic pumps; and its object is to provide avalve that is readily removable, and on account of the novel construction of its valve-seat the same may also be taken out of the well-pipe without unnecessary trouble or labor. This I accomplish by simple means, which can be attached to the lower end of the plunger-rod and lowered into place, substantially as here inatter fully described, and as particularly pointed out in the claim.

In the drawings, Figure 1 is a vertical central section of the lower portion of the lower cylinder, the upper end of the well-pipe located below the same and the coupling connecting these parts having my invention applied thereto. Fig. 2 is a side view of my improved valve-seat. Fig. 3 is a transverse section taken on dotted line 3 8, Fig. 2. Fig. 4 is a similar sect-ion taken on dotted line 4 4, Fig. 2.

Referring to the drawings, A represents the lower portion of the lower cylinder of an ordinary domestic pump; B, the concentric wellpipe of less diameter depending into the bore of the well below the lower cylinder, and C represents the coupling connecting the cylinder pipe B. The bore of the central portion of the coupling C is slightly greater than its lower portion and has a circumferential groove a made therein near its upper end.

The bore of the upper portion of the coupling (1, which screws over the lower end of the cylinder A, is greater in diameter than its central portion and provides a shoulder 6, upon which is seated a suitable packing-ring c. The lower end edges of the cylinder press down upon this packing -ring when it is screwed into the coupling to form a watertight joint, substantially as shown.

My improved valve-seat comprises a cylindrical body D, the lower end of which is provide d with a circumferential flange (Z, of a diameter slightly less than the bore of the central portion of the coupling C. The upper edges of this flange (Z are beveled, and surrounding the body D, just above the same, is

an annulus e, which is supported by said flange and is of the same diameter thereas. The lower outer edge of this annulus e is beveled and is opposed to the bevel edges of the flange and together therewith makes a circumferential groove, in which an annular spring E is placed, the normal diameter of which is slightly greater than that of the flange. The ends of the annular spring are separated a suitable distance apart, so as to permit of the compression of said ring and its consequent reduction in diameter.

The upper screw-threaded portion of the outer circumference of the body D of the valveseat is engaged by the interiorly-screwthreaded lower boss of a cage F, which presses between its lower edges and the ring 6 a packing-ring G, of leather or other suitable material. The pressure of water above the valve-seat makes this packing-ring spread and prevents leakage from the cylinder down into the well-pipe between the sides of the valve-seat and the bore of the coupling. The upper portion of the cage F comprises inverted- L-shaped armsf, which arise from the nar row circumferential flange on the upper end of the lower boss of the cage and have their inturned overhanging edges terminate in a guide-boss of less diameter than the lower boss. The bore of this upper boss corresponds in shape to and serves as a guide for the longitudinally-grooved spindle h, arising centrally from the valve H, which latter consists of a circular plate of such diameter as to close the upper end of the reduced upper portion of the bore of the valve-seat body. For purposes which will be obvious the valve I-I may, if desired, have a screw-threaded stud 1' depending centrally down from it, and the upper end of the spindle It may have a screwthreaded stud I projecting centrally upward from it.

In operation when it is desired to remove the valve and valve-seat the upper screwthreaded stud I on valve H is engaged by a suitable device whereby the same is withdrawn. By thus removing the valve and valve-seat I release the pressure on packing G and enable said valve and valve-seat to be withdrawn while the water-pressure is released in the cylinder A.

What I claim as new is In a wall a lower cylinder, a depending upper end of the body of said valve-seat, a l In testimony'whereof I have hereunto set valve retained and vibrating Within said cage, my l1 and this 24th day of June, A. D. 1905.

a suitable packing interposed between said LOUIS M GERWE seat-b0dy and said lower cylinder, and means independent of said packing for reniovably Witnesses: locking said valve-seat in said coupling and W. E. MOORE, allowing a limited vertical play therein. H. J. GERWE.

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