US535123A - Minott w - Google Patents

Description

, (No Model.)

M. W. SEWALL.

GAGE 000K.

No. 535,123. Patented'MaJr. 5, 1895.

WITNESSES: g INVENTOR; %w.a dmilmzlm. I

ATTORNEY UNITED STATES PATENT OFFicE.

MINOTT W. SEWALL, OF NEW YORK, N. Y.

GAGE-COCK.

SPECIFICATION forming part of Letters Patent NO. 535,123, dated March 5, 1.895.

Applioationfiled March 31, 1894:. Serial No. 505,902- (No model.)

To all whom it may concern.-

Be it known that I, MINOTT W. SEWALL, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and usefullmprovements in GageOocks, of which the following is a specification.

The improvements relate particularly to that, without removing it from the cook it can be ground on its seat, all as hereinafter described and claimed. 7

In the accompanying drawings, Figure 1 represents a top view of a cock embodying the improvements. Fig. 2-,Sl10WS a vertical, longitudinal section of the same, on line XX of Fig. 1, the lever being shown partially in section. Fig. 3 represents the cock partly in vertical, longitudinal section, with the lever in two positions, and an instrument applied to the valve to grind the same on its seat.

A denotes the body of the cock, which is shown as threaded at a, that it may be screwed into place, and is furnished with the usual discharge passages B B. The inner end of the threaded portion a is shown as beveled, but this feature forms'no part or my invention. The valve 0, which is cylindrical, is located in a chamber D, forming an enlarged extension of the passage B, and has its forward end at beveled to fit the beveled seat b. At 0' the valve is reduced in diameter so as to produce a shoulder a, and a transverse pin E passes through the body in such relation to the shoulder a as to retain the valve in the cock, and prevent the valve from being blown out when the cock is opened.

The lever or handle F is provided with cheek-pieces f that fork the body and are pivoted to ears a thereon by a transverse pin g; and the lever is furnished with a lug or nose F which engages the valve when the lever passes to its normal position, closes the valve and retains it in a closed position, the weight of the handle being made sufficient for such purpose.

The cheek-pieces f are rounded on their ends, and cover the ends of the pin E when the lever is down, as shown in Fig. 2, thereby preventing a displacement of the pin. The pivotal pin g passes through the cheek-pieces eccentric to their rounded ends, so that, when the lever is raised the ends of the pin E will be uncovered and exposed, as shown in Fig. 3, thereby allowing the pin to be driven out,

so that the valve can be removed from its chamber, when desired. The pin g is located above the valve 0, so as not to prevent a withdrawal of the latter, and so that, when the lever israised the nose F thereon will swing rearwardly and upwardly outof engagement with the valve, thereby allowing the steam pressure to force the valve back to open the cock, and to enable the valve to be drawn out without disengaging the handle from the cock.

To allow the valve to be ground on its seat, the rear end of the valve is furnished with a slot 0', Fig. 2, to receive ascrew-driver G, Fig. 3, or said end of the valve is suitably shaped to receive a wrench or other turning instrument, by which the valve can be rotated and ground on its seat, under pressure, without any interference by the lever F, force enough being applied to overcome the steam pressure during the operation.

It is obvious that the ends of the cheekpiecesf need not necessarily be rounded, but that they may have any suitable form to cover the ends of the pin E (if it be not headed, or to cover one end if it be headed) when the lever is in normal position, and to uncover the end, or ends of the pin when the lever is raised.

WhatI claim as my invention, and desire to secureby Letters Patent, is-

1. A cock havingavalve; means for retaining the valve in the cock when the same is open; and alever which holds the valve closed,

and which covers the said means when in one position and uncovers the same when in another position, substantially as set forth.

2. A cock having a valve seated therein with that end farthest from its seat formed to receive an instrument to rotate the valve on its seat; means for retaining the valve in the cook when the same is open; and a lever which holds the valve closed and covers said to means when in normal position, and disengages the valve and uncovers said means when swung, whereby the said means may be removed or the Valve can be rotated by a turning-instrument, when the lever is in the latter position, substantially as set forth.

MINOTT W. SEWALL.

\Vitnesses:

J. W. LAWSON, T. H. WATSON.

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