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Publication numberUS335033 A
Publication typeGrant
Publication dateJan 26, 1886
Filing dateDec 17, 1885
Publication numberUS 335033 A, US 335033A, US-A-335033, US335033 A, US335033A
InventorsNathaniel C. Locke
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Diaphragm for pressure-regulators
US 335033 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

DIAPHRAGM PoR PRESSURE RBGULATORS.

N. C. LOGKE.

(No Modem Patented Jan. 26, 1886'` N. PETERS, Phutwwhngmpher. washington. D. C.

UNITED STATES PATENT EETCE,

NATHANIEL c. LocKE, 0E SALEM, MASsAcHUSETTS.4V

DIAPHRAGIVI FOR PRESSURE-REGULATORS.

,EDEICIFICATION forming part of Letters Patent No. 335,033, dated January 26, 1886. Application filed December 17, 1885. Serial No. 185,918. (No model) To @ZZ whom t may concern,.-

Be it known vthat I, N ATHANIEL C. LooKE, a citizen ofthe United States, residing at Salem, in the county of Essex and State of Massachusetts, have invented new and useful Improvements in Diaphragms for Pressure-Regulators, of which the following is a specification.

These diaphragms, shown and described in my application No. 92,755, have the extended edge or margin clasped between fianges and the centrall part inverted so as to form adeep annular corrugation or fold. Heretofore these diaphragms have been made in the form of a plane cylinder with one end closed and a laterally-extended flange around the open end. The closed end being inverted and forced into the open end, necessitates its reduction to the diameter of the interior of that portion into which it is forced, causing a puckering and crowding which sometimes prevents its free and easy action in use. It will be observed that any heavy rubber fabric containing layers of cloth cannot beforced from its natural shape and form Without more or less straining the canvas, and especially would this be the case when subjected to severe pressure.

The object of my invention is to prevent this wrinkling and provide a diaphragm thatshall allow the piston to move with more freedoilili 3o when under great pressure; and it consists in forming its upper and inner part smaller thanl the lower and outer portion. (t

Figures 1 and 2 are vertical sections.

In Fig. l is shown a diaphragm as it comes from the molds, having its upper portion contracted, as shown at at, to nearly the diameter of the interior of the base.

Fig. 2shows the diaphragm in working position, with laterally-extended edge a5 clasped between anges a and a2, having piston a3, located Within the upper portion, c, which is made to occupy the interior of the lower portion from at to the base.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, iS

A diaphragm constructed substantially as herein shown and described, having that por' tion from c? to a6 made smaller in diameter 5o than the base portion and adapted to be folded in upon itself, as shown.

NATHANIEL C. LOCKE.

NVitnesses:

R. D. O. SMITH, M. P.' CALLAN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2500833 *Oct 20, 1944Mar 14, 1950Esterbrook Pen CompanyFountain pen
US2502256 *May 11, 1944Mar 28, 1950Harding Jr JohnFuel control valve
US2638930 *Oct 25, 1946May 19, 1953Niles Bement Pond CoDiaphragm
US2692618 *Sep 19, 1951Oct 26, 1954Wilhelm Ludowici JohannDiaphragmed piston and cylinder construction
US3053187 *Nov 9, 1959Sep 11, 1962Hills Mccanna CoVariable output pump
US3246872 *Aug 20, 1962Apr 19, 1966Tomlinson Ind IncSeat cup
US5363743 *Apr 14, 1993Nov 15, 1994Eaton CorporationFluid pressure servomotor
Classifications
Cooperative ClassificationF16J3/02