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Publication numberUS889275 A
Publication typeGrant
Publication dateJun 2, 1908
Filing dateDec 11, 1907
Priority dateDec 11, 1907
Publication numberUS 889275 A, US 889275A, US-A-889275, US889275 A, US889275A
InventorsThomas Turner
Original AssigneeFrank R Mcallister, Thomas Turner
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 889275 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)


vNo. 889,275.







To all whom 'it may concern:

Be it known that I, THOMAS TURNER, a citizen of .the United States, residing at Elyria, in the county of Lorain and State of Ohio, have invented certain new and luseful Improvements in Pump-Pistons, and do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in thev art to which it appertains to make and use the same.v

My invention relates tokimprovements in pump pistons, such as are adapted to be used for pumping oil, Water and the like, all substantially as shown and ticularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of the piston and a section of a rod-or shaft on which it is mounted.

.F ig. 2 is a longitudinal sectional elevation of` detail ol one of the secthe piston. Fig. 4-is a piston on a line corresponding to 4 4, Fig. 2, and Fig. 5 is aperl `ig. 1, and Figj is a tions of' the body of spective view of oneof the bands that en-v circle the body of Ithe piston.

The invention as thus shown consists in a piston designed more particularly for pumping various liquids, and the Vnovelty resides in the novel construction for expanding the piston to take up wear, as will hereinafter fully appear. To th a pliston rod It, or one end of. such rod, w 'ch the piston is mounted, and the piston proper comprises a body consisting of several similar sections or segments B, Fig..3, which as Originally assembled and related, constitute a complete circle with the sections lying close together as in Fig. 4. Th recesses 2 at their base modate a boss 3 On head A and about or upon the shoulder of which said, sections areassembled, as in F ig. 4, While the other ends of said sections B areformed with a long bevel 4 on their inner sides which whensaid sections are brought together, form a conical space occupied by s reading cone C and which give a practicaliy wedge shape to said beveled ends. The said e said sections have adapted to accomcone is 4slidably R, and a transverse pin or rod 5 in said cone passes through a lengthwise slot 7 in piston y to lock said cone rotatably with the rod and vet leaves it free through slot 7 to move the cone inward and spread the parts about the saine to take up Wear in the piston. -The Specification of Letters Patent. Application filed December 11, 1907.

' said cone has described yand parese several ends I showupon,

rod R and serves Patented June 2, 190s. Serial No. 406,113.k

a tubular stern or sleeve extension 8 projecting outward beyond the piston proper and which is sleeved over rod R, and threaded externally and serves as the 'adjusting medium for the cone. To these ends the extremity of the piston rod also is externally threaded and projects beyond sleeve 8 so as to receive a nut 10 adapted to bearagainst the end of said'sleeve. Then a head is loosely mounted rotarily on said sleeve 8 and adapted to bear against the body'B of the piston, and a"'nut 12 on said sleeve locks said head in place.

A series of four packing rings G encircle body B and are confined between the two heads A and E. Said rings have s lit diagonal ends 14, which enable them to liie spread to take up wear as they become Worn in use. TWO are provided and which encircle body B next beneath rings G and serve to bridge the gaps Or open spaces that come between the sections of said body when the piston is expanded beyond its original size, Fig. 4. The split joints`14 of said rings are staggered so as not to come opposite each other. n fixed as to piston rod-R, while headl E is loose upon its support except as fastened by nut 12.

In operations, the Wear on the packing rings is t'aken u iirst, by loosening nut 12 which bears against head E; and second, by screwing up nut 10 which bears against the end of sleeve 8 thereby forcing cone head C axially on rod R and segments B radially outward to expand acking rings G; When adjusted, nut 12 loc s the parts together and serves as alock nut combined with nut 10. Spring'bands H also serve to hold segments B in lace when changing packing rings G.

1: A piston comprising a body formed of sections having corresponding internally tapered ends, a spreadin cone engaging said tapered ends, a piston ro( having a slot lengthwise and a pin in said cone engaged in said slot, heads on said piston and body, packing rings mounted between said heads over said bands, a look nut mounted on an extension and bearing against one of said heads, and a tightening nut for the cone mounted On the end of the Vpiston rod and bearing against the end of said cone extension.

j A pistonrod having a slot lengthwise expansible spring-steel bands H also`l Head A is expansible bands about saidtherein, a body for the piston consisting of a seriesor` sections arranged about the portion of said rod containing said slot, a cone on the rod to spread said sections having a tubular extension externally threaded and a is ti throughsaid cone engaged in said slot,

sha ed heads bearing against-the ends of said bo y sections and one of said heads overlaping the hase of said cone and mounted over the threaded extension thereof, a nut on said extension to fasten said head and a nut on 1 THOMAS TURNER.


R. B. MOSER, ,n F. C. MUssUN,`

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4363606 *Jun 30, 1980Dec 14, 1982Kilgore Raymond LFree piston pump for pumping liquids from a well
Cooperative ClassificationF04B53/143