Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS790056 A
Publication typeGrant
Publication dateMay 16, 1905
Filing dateOct 21, 1904
Priority dateOct 21, 1904
Publication numberUS 790056 A, US 790056A, US-A-790056, US790056 A, US790056A
InventorsGeorge M Hilger
Original AssigneeGeorge M Hilger
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 790056 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

UNITED STATES Patented May 16, 1905.



SPEGIFICATIONibrming part of Letters Patent N0. 790,056', dated May 16, 1905.

Application filed October 21, 1904:. Serial No. 229,432.

To @ZZ whom it may concern:

Be it known that I, GEORGE M. HTLGER, a citizen of the United States, and a resident of Chicago, in thecounty of Cook and State of Illinois, have invente'da new and Improved Reducing-Valve, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved reducing-valve which is simple and durable in construction, very effective, and sensitive in operation, and arranged to prevent jerking or jarring of the valve when in use The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying Vdrawings,v

forming a part of this specification, in which similar characters of reference indicate corresponding parts in both views.

Figure l is a sectional side elevation of the improvement, and Fig. 2 is an inverted plan view of the same.

The valve-body A is provided with an inlet A and an outlet A2, separated from the inlet by a valve-seat A, on which is adapted to be seated a ball-valve B, resting loosely on a seat C', formed on the upper end of a piston C, mounted to slide loosely in a bonnet or cylinder D, screwed or otherwise fastened on the valve-body A in axial alinement with the seat A3. The bonnet D extends from the outlet side of the valve-body A, as plainly indicated 'fitted with its upper portion into a recess C3,

formed in the bottom of the piston C, and the lower end of the said spring E rests on a cupshaped follower F, arranged in the lower portion` of the bonnet D. A screw-rod G, screwing in the closed lower end of the bonnet, abuts against the under side of the follower F, so that on screwing the screw-rod inward or outward the tension of the spring E can be increased or diminished.

After the tension of the spring E is set to the desired degree by adjusting the screw-rod D, as described, the latter is locked in place by a suitable jam-nut H.

By the arrangement described the ball-valve B is loosely seated on the seat C of the piston C, which thus forms a spring-pressed support for the ball-valve, so that the latter atall times properly seats itself on the seat A3 in the valve-body A. y

In case the valve is used for reducing or throttling steam, for linstance, the water of condensation filling the recess C2 acts as a hydraulic cushion for the ball-valve B, and the water of condensation passing'into the bonnet D acts on the piston C in such-a manner that when the valve B is open and the piston C is pressed downward against the tension of the spring E thenl the water is forced out of the bonnet D, and consequently the piston C and the displaced water act as a dash-pot to preventundue jerking or jarring of the valve B when opening.

Thedevice is very simple and durable in construction, not liable to easily get out of order, and is very sensitive, and jarring or j erk-` ing of the valve is reduced to a minimum.

Having thus described my invention, I claim as new and desire to secure by Letters Pate-ntl. A reducing-valve comprising a valvebody having an inlet, an outlet, a valve-seat between the inlet and outlet and a cylindrical extension in aXial alinement with the said valve-seat, a ball-valve adapted to be seated on the said seat, and a spring-pressed piston in the said extension, carrying the said ballvalve,said piston having a recess therein admitting a portion of the valve without being lilled thereby, as and for the purpose set forth.

2. A reducing-valve comprising a valvebody having an inlet, an outlet, a valve-seat between the inlet and outlet, a cylindrical extension in axial alinement with said valve-seat, a ball-valve adapted to be seated on the said seat, and a spring-pressed piston on the said extension, provided with a seat for the said ball-valve to rest on, said seat having therein a recess admitting a portion of the valve with- 5 out being filled thereby, adapting the recess to receive Water of condensation.

3. A reducing-valve comprising a valvebody, e. ball-valve adapted to be seated in the said valve-body, and a spring-pressed movable IO Support for the said ball-valve, having therein a, recess admitting a portion only of the valve Without being iilled thereby.

In testimonyv WhereoiI ,l have signed my name to this speciiication in the presence of two sul scribing Witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2415258 *Feb 4, 1943Feb 4, 1947Parker Appliance CoHydraulic relief valve
US2714392 *Apr 8, 1952Aug 2, 1955Jean MercierValves
US4310018 *Feb 13, 1980Jan 12, 1982Parr Manufacturing CompanyCheck valve assembly
US6622752 *May 25, 2001Sep 23, 2003Bosch Automotive Systems CorporationPressure relief valve
Cooperative ClassificationF16K15/044