US568719A

US568719A - Stop-valve

Info

Publication number: US568719A
Authority: US
Publication date: 1896-09-29
Anticipated expiration: 1913-09-29

Description

(No Model.)

H. R. FRISBIE.

STOP VAVLE.

Patented Sept. 29, 1896.

5mm/who@ HENRY R. FRISBIE, OE NEIVARK,

ATENT nricn.

NEI/V JERSEY, ASSIGNOR TO THE EASTVOOD IVIRE MANUFACTURING COMPANY, OF BELLEVILLE,

NEW JERSEY.

A STO P-VALVE.

SPECIFICATION forming part of Letters Patent No. 568,719, dated September 29, 1896.

Application led April 18, 1895. Serial No. 546,175. (No model.)

ark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Stop-Valves; and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it-.appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to certain improvements in that class of stop-valves represented by the one shown and described in Patent No. 199,814, in which a longitudinally-movable valve is arranged in a cylindrical body open at opposite ends and one side, one end Ybeing provided with a removable head which provides bearings for the valve-stem, the opposite end of the body serving as an inlet for the fluid and the side opening as the outlet. The relation of the inlet and outlet, however, may be reversed, it merely involving a change in the direction of iiow of the fluid. Between the inlet and outlet openings or passages, in this class of valves, is formed an annular valve-seat extending around the inside of the cylindrical body, which is exposed to the iiowing iiuid when the longitudinallymovable valve is raised from the seat and is open to allow a transmission of such fluid. Because of this exposure to the fluid the valves of this class after a time become defective because of the grinding or abrading effect of scale or other gritty matter contained in the fluid on the exposed surface of the seat, the action of said scale or gritty matter renderiu g the seat irregular and out of proper conformity with the valve-head. Thus after a time an impervious joint cannot be obtained when said head is forced down on its said seat.

The object of this invention is to prevent, in stop-valves of the class referred to, the abrading action of the scale, silt, orlike gritty matter in the iiuid referred to, and thus to secure Vincreased durability.

Further objects are to reduce the cost of construction, to prevent the valve, while avoiding the abrasion referred to by solid substances passing with the water through the valve, from being clogged, and to secure other advantages and results, some of which may be referred to hereinafter in connection with the description of the working parts.

The invention consists in the improved stop-valve, and in the arrangements and combinations of parts thereof, substantially as will be hereinafter set forth and finally embraced in the clauses of the claim.

Referring to the accompanying drawings, in which like letters of reference indicate corresponding parts in each of the figures, Figures 1 and 2 are vertical sections of a stopvalve of the improved construction, Fig. l representing the valve closed, and Fig. 2 the same open. Fig. 3 is a section taken through line 0c of Fig. l; and Fig. 4 is a section taken through line y, Fig. 2.

In carrying out my, invention I employ a chambered cylindrical body or shell having an outlet a projecting from one side thereof at right angles. At the lower end the shell or body provides an inlet h and at the upper open end a seat for a cylinder-head having bearings for the valve-stem and means for packing the same. The said inlet and outlet parts of the shell are suitably threaded to receive connectingpipes, dto., inany ordinary manner.

Within the cylindrical shell at the valveseat and junctions of the inlet and outlet passages is formed an annular raised shoulder c, the upper edge of which receives the valve d when the latter is closed down. A packing e is located within a recess on the under side of the head or upper enlarged part of the valve d, which packing serves to form the desired impervious joint. The valve d is longitudinally movable within the hollow cylindrical shell to form its seat therein. The said valve d, below the head formed at its upper end, is provided with a cylindrical extension which closely fits within the passage b, formed at the lower end of the shell, so as to slide longitudinally therein. Within this extension I form a curved passage d', adapted to receive the iluid at the lower end of the extension from the inlet-passage b and deliver it at one side of said extension to the lateral outilowpassage a. At the said lower end of the extension the metal thereof entirely surrounds the iniiow-passage and iorms a valve-seat guard which serves to protect the valve-seat when the valve is raised longitudinally or endwise from its closed to its open position. rlhe passage d,curved as described, is of a contin uous and uniform capacity, such as that of al1 ordinary pipe-elbow, so that the flow is not impeded or broken and is devoid of shoulders on which the solid matter flowing with the water can catch and by gradual accretion form an obstruction by which the flow is prevented. This capa-city for preventing the ilow is obtained by giving to the walls of the passage a continuous curved sweep, particularly at the sides of the passage opposite the contracted or narrow portion of the valveseat guard. (Shown in the drawings.) Vhen in open position, the said guard lies in coincidence with the raised shoulder, protecting the edge thereof, so that to a very large degree the sediment, scale, or gritty matter from the boiler is thrown over and away from the seat in passing out, and the latter is thus preserved from abrasion, and its operative lifetime is greatly extended. The abrading action is also hindered by the action of the water tending to lift the gritty substance away from the seat.

The valve is operated longitudinally to and from its seat by means of a screw-threaded spindle f, secured tothe upper end of the said valve by means ot a collar g, which tits in an open-sided recess at the upper end of the valve, as indicated in Fig. l. Said spindle is provided at its upper end with an angular hearing 7L, for a hub of a wheel or crank, and threads to receive means for holding the saine in position. Said shaft works ,in a yoke t', which is firmly secured to the top of the body or shell, as indicated in the drawings, and is provided with a suitable stuing-looxj and packing j to render the joint around the rod impervious. Said valve d is also provided with lugs 7.: on opposite sides thereof, which work vertically in corresponding longitudinal grooves in the shell orbody, thus preventing the valve from turning on its axis and keepingthe openings in proper relation.

Having thus described the invention, what I claim as new isl. The improved stop-valve herein shown and described, comprising the shell having at one end an inlet-passage and at one side an outlet-passage extending substantially at right angles with the inlet-passage, and having a valve-seat at the junction of said passages over which the water lows as it turns from one passage into the other, and a valve d, arranged within said shell and sliding endwise to and from said seat, the upper extension or head of said valve having a rotatable and longitudinally-movable stem swiveled thereto, and having bearings adapted to engage said seat to close the fluid-passage and the 7o lower extension having a single curved passage of uniform capacity extending through said extension and having an opening at the lower end and at one side of said extension and having at its end opposite the valve-seat bearing an annular guard entirely surround.- in gthe flow-passage of said valve and adapted to be raised into coincidence with the valveseat to protect the same from grit passing thereover with the lluid, substantially as set forth.

2. In a stop-valve, the combination with the shell having an annular valve-seat formed at the junction of the inlet and outlet passages, of a longitudinally-movable valve having at one end an enlargement adapted to overlie said annular valve-seat, and at the other end having an extension with a single curved passage therethrough of uniform capacity at its inlet and outlet ends which said ends lie at one end and one side of said extension, the lower end of said extension or the end opposite said head having a guard adapted to be raised into coincidence with the inside upper edge of said annular scat when said valve is moved longitudinally to its open position, substantially as set forth. In testimony that I claim the foregoing I have hereunto set my hand this 23th day of March, 1895.

HENRY R. FRISBIE. \Viti1esses:

.OLIVER Dimmi, ,ROBERT SALLBERGER.