US2115998A - Valve - Google Patents

Description

R o N N o c 0 K G VALVE Filed Feb. 5, 1936 Inventor Geoz qeK U'Camzo Patented May 3, 1938 PATENT OFFICE VALVE George K. OGonnor, Evanston, 111., assignmto Republic Flow Meters Company, Chicago, 111.,

a corporation of Illinois Applitation'February 5, 1936, Serial No. 82,388 2 Claims. (Cl. 137-439) In the illustrated arrangement, the lever is movable in a slot formed in a guide mounted on the body of the valve (for example carried by .arms extending from a cap removably secured to M the valve body), and is pivoted to the end of the valve stem slidable in the guide and in a bearing in the valve body (for example in said removable cap) and which operates the valve member proper. I

There are a pair of links, or equivalent parts, pivoted to a part of the valve body, and preferably to the removable cap and which are connected by coaxial pivots to a. slide adjustably secured to the lever atone side of the slotted guide. The illustrated slide is U-shaped in form, having arms 25 connected to the links as described, and having a central portion slidably embracing and adjustably secured to the lever.

Thus by adjusting the slide on the lever, the fulcrum of the lever is readily shifted, to vary the opening of the valve caused by'the same throw of the end of the lever which is connected to the regulator. 7

The above and other objects-and features of the invention, including various novel combinations of parts and desirable particular constructions,-

will be apparent from the following description of the illustrative embodiment shown in the accompanying drawing, in which: r 40 Figure 1 is a section through the valve and its novel operating linkage;

Figure 2 is a perspective view of part of the linkage, illustrating one extreme position in which movement of the lever causes no actuation of thevided with a double valve seat 20. The entrance passage to the valve has a diverter II which prevents side thrust on the valve stem described below.

The cap I2 is shown provided with a bearing 22, suitably packed, slidably embracing a valve stem 24 carrying within the valve body a double valve member 28 cooperating with the double seat 28. The illustrative valve member 26 and seat are shaped to give a straight-line function as m the valve is opened. The diverter i'l prevents side thrust on the valve stem 24 and consequent wear on the hearings in which it slides.

The cap l2 also carries arms 28 provided (integrally, as illustrated) with a slotted guide 30 1 for a guide plunger'32 adjustably threaded to the end of the valve stem 24 and in effect forming an extension of the valve stem.

The plunger 32 is slotted to embrace a lever 34 formed with openings 36 for a pivot connecting it to the regulator described in my application No. 20 31,380, filed July 15, 1935. The plunger is connected to the lever by means such as a, pivot 38. The lever 34 is arranged to be movable in the slot of the guide 30.

A pair of links 40 is connected by a pivot or coaxial pivots 42 to the valve body, for example by being pivoted to the arms 28 carried by the cap l2, on one side or the other of the guide 30. Both sets of arms 28 may be formed with 30 bearings for the pivot 42, so that lever 34 may extend in either direction.

Connected to the links 40 by means such as coaxial pivots 48 are the arms of a U-shaped slide 48 slidably embracing the lever 34 beyond the guide 30. The slide 48 is adjustably secured to the lever 34 by means such as set-screws 58.

It will be seen that the slide 48 may be adjusted to the position of Figure 2, with the pivots 46 coaxial with respect to the pivot 38, in which position movement of the lever 34 causes no moveinent of the valve stem 24. Or it may be adjusted to a position such as shown in Figure 3, with the pivots 48 spaced from the pivot 38, in which case movement of lever 34 causes a movement of the valve stem 24 in proportion to the distance of the fulcrum pivots 46 from the pivot 38.

, While one illustrative embodiment has been described in detail, it is not my intention to limit the scope of the invention to that particular em- 50 bodiment or otherwise than by the terms of the appended claims.

I claim: 1. A valve comprising a valve body having at one side a bearing and a valve member having a oi said valve stem having a slot transversely therethrough, a lever movable in said slot and pivoted to the end of the valve stem, links pivoted to the valve body, and a U-shaped slide having arms connected to said links by coaxial pivots and having a central-portion slidably embracing and ad- Justably secured to said lever at one side of said guide.

2. A valve comprising a valve body having at one side a removable cap formed with a bearing and a valve member vvithin the valve body hav- 9,115,001! stem slidable in said bearing, a guide i'or the end

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