US1109174A - Air-valve. - Google Patents

Description

Q's-(a C. H. PETERSON.

AIR VALVE.

APPLICATION FILED FEB.21,1918.

1,109,174, Patented Sept. 1, 1914.

[lave/0601': a f C. K1 6661190 s. Tovall whom it may concern.

CARL H. PETERSON; or HARTFORD, coivNEc'rIcU-r AIR-VALVE.

Be it known that I, CARL H. Pernnson, a

1 subject of the King of Sweden, residing at Hartford, in the county of Hartford and v State of Connecticut, have invented "certain new and useful Improvements inAir-Valves,

of which the following is a specification.

This invention relates to what is known as "an,air valve 'or a structure avhich is associated with radiators forming part of heating systems and by which the'cold-air in theradiator can escapeitherefroln when" neces sary, but which shut ofi'the steam, among the principal objects of the invention being the provision of an article of "tlllS character which is simple in'eonstruction and positive and certain and wholly automatic. in action.

Said valve possesses other features of novcity and advantage whichwith the foregoing will be stated at length the follow- "ing description wherein I will set forth in full that one of the several forms of em- 'bodiment.' of th invention-which I have selected for illustration. in the dmwin'gs accompanyingan'd forming part of tl1e,-pres-= ent Specification. 1 do not limit myself this disclosure; I may departtherefrom inseveral particulars within the scopeof the invention defined by the claims-following said description. 1

Referring to said drawings; Figure 1 is a vertical sectional view of an air valve. involving my invention. Fig. 2 is a; horizontel sectional view of the same on the line 92 of Fig. 1. Fig.3 is a perspectiv e viewof an expansible and contractiblezmember and a clamping member cooperative there- .50 which will be hereinafter'sim'plyrefcrred to with, and, Fig. 4 is a detail view in plan (if a spring. i Like characters refer to like parts throughout the several views. 7 I a l The different parts of thedevice'are in closed in a suitable casing; that shown for the purpose being denoted int-a general way by 2 and being tapered somewlmttoward top, the upper portion heing reduced as at 3 and provided with an upstanding neck \Vithin said casing is an expansihle and contractibl member which acts to automati eally govern the valve proper of the devi cc as the valve? and the shell thehody oi which is spacedfrom the body. r the casmg 2, answerssatisfactorily in this connection ,said shellrbeing preferably made of comparatively thin metal such;asnaluniinum Specification of mum Patent. Application flledjtebruary 21, um;

through holes in a disk herein:

Patented Sept. '1; 191 1. s riainmneassfi The mounting andn ode of operation of said shell Wlll be hereinafter more Pomted'out.

As shown the casing is connected with the elbow or pipe connection 6 the inner terminal of which is illustrated as externally threaded for connection with a 'r'adiatoi: .(Not shoavn.) The casing-2 is threaded into the outer enlarged portioH'Ofs i shew said enlarged portion beiii g furnished int-e riorly' with a wall or diaphragm '1" having one 01' nvore'ports, as 8 which the interior of the easin 2'is put-into communication witlrthe radiator. w

In the construction shown 'zhe'u eer reduced portion of the shell 5 iselam'p'ed or fixed to the upper reduced portion'cf the casing 2 and for this purpose the clampir member 9 may be provided, the body. of

said chomping member being-externally oi cofne form to engage the correspondingiyformed adjacent surfaee upon the interior of the head portion of said shell 5 and'to the sumesolidly and firmly against the'siniilarlyrconed interior surface of the reduced portion 3 of said casing, said clamping-mere her!) having a shank 10- extending upwardly therefrom and tapped into theneck i of the casing 2.- Fitted into said "neck 4 is the plug *11 having a port 12 therethrough the lower portion of said port beingta xred to present .aseaf for the conicalvalve 'l3'provided with a 'downwardly-extendingelon eted stem 14. T he valve-seat plug 1-1 is held rrniy in piece by the plug lfi-provided Withan enlarged .manipulatlilghead 1C- peripheraliy rou 1 ened' to facilitate its operation and titted screwthreading 'into said neck. The enge ing threads of the plug loand neck s shown are rig-ht handed while thosehetween the plug 11 and said neck are'left hand 1 so that asgthe plug 15 is rotated to engage 1e companiomplug- 1]., the latter will not be turned. It will be clear {that the threedi'r'i g of the two plug might be reversed tiie ohject in view being to h'zgye the threads oi said twoplugs opposite The clamping member 9 has one or more ports 17 therethreugh and the plug 15 also has a sunday; port {dope-m mg tothe atmosphere.

It will be'assumed that thefivaive open at which time'it uncove s the port" H.

In this case cold air in the radiator m thm efrom enters the elbow through the ports 8 in the wail filily j l tially central bore in the clamping member 9, and encircling said stem below. said clamping member is the coiled sprin ,19 the outer end of which bears against sair clamps ing member While the opposite end engages aeainst acollar 19 on said stein, said spring exerting a constant tendency to force said 'valve open which is the normal relation or that which exists when steam is not on so that at such time cold air can treely escape from the radiators. The loweror inner end of the valve stem extends through and is guided in perforations formed approx mately centrally in the Wall 7 and the dish I 20 which latter also has holes 21 for the pas sane of the cold air and steam at the appropriate times. Said disk 20'elosely fits ina couuterbore 22 in the outerportion of the elbow 6 by reason of which it is held se-' surely in place. The stock 23 punched from said disk :20 to form the two holes 21 is bent at right angles to said disk and reduced at the free ends to present shouldered snpplorting or fulcrum lugs for the two rocking levers- 24. the lower run portiorrot the shell 53 realm; on the short outer arms of said lovers. the" outer ends of which are bent up as at 25 to revent undue lateral movement of said shell.

the inner end of the other lever extends be tween the branches of the forked end thus presenting a simple and compact means by which said levers can he crossed. "if-lie branches of said forked lever and the inner end of the other lever are furnished with upwardly bent ears 26 which bear agiiinst the under side of the washer 2T free'or loose on the stem 14 and which will hereinafter appear is, adapted to apply a yieldable effeet to the stem 14 in a direction to close. the valve 1.3.

forked lever and through an opening on perforation in the other lever; l tISliQRQdHSN by pinning. to the valve stcurllisthe (llSl or plate 28 and between-Hie same and the companion disk-27 is lnterposed the double.

bowed leaf spring 29 which is-stronger than the spring 19 for a reason that will hereinafter appear. It should be observed that the distances between the points on said le- The comparatively long innor end ofone of the levers is forked, and

It will be nnderstood ,t-hat said stem 14 extends between tbe'hranuhes ot the,

'veiisengaged by said shell and the centers of motion of said levers are respectively much less than the distances between said centers and the points at which said levers apply their effects to the valve stem by reason o-Lwh ich a very small amount of expansion of said shell is necessary to close said valve.

It will be assumed that the radiator with which the c ouplingor elbow H is connected, contains no steam; there will of course in such an event be cold uorv substantially cold air in the radiator, so that the shell 5 will be in its contracted relation, the outer arms of the levers 24 being. down and the inner arms thereof being. up by reason of which the spring 1.9 by acting; againshthe collar 19" will .hold the valve 13 open in the manner already described and this relation will 'be n'iaintaintal so, long as there is no steam in the radiator. On the admission of steam into the radiator a small quantity thereof passes into the casing 2 in the manner alreadysetforth, where it acts upon the shell 5 to cause the downward or inward expansion of the same. As the shell thus expands its lower portion will depress the outer arms of the two levers A, the inner arms of said levers being elevated and acting against the disk orplate 2? apply an upward thrust thereto whichin turn is transmitted to the strong sprint 29. and. by the latter yieldingly to the disk or plate in a direction to move the stem H outward to close the valve 13. the parts being so proportioned "and timed that; the ualve .litwill not he closed l'irnily against its scat until all the cold a r has been discharged from the radiator and casing. The yield-able etiect applied to the stem 14- in a direction to close illuvalve 1-3 is advantageous in that thereby n11- parts cannot be injured in case there is any ahncn-nialexpansionof the shell 5 as in such a case, the spring 25) will be. further compressed without possibility of. injury even thong .the valve 13 be solid against lie seat.

What I claim is l. A device of the class di'iscribed, comprising aliasing; provided with a part having a portopening to atmosphere; a valve cooperating with said port, a-heatexpansible shell in said casing, a pair-of crossed le-'ers the outer'portions of which are op- .cratable by said shell on the expansion th cria f lsaid levers being supported for rocking indvement between their ends, and neans engageable by the innerportions of said lorers, for oh I in}; the valve.

2. Adevice .ofthis class described, com- .prisingarasing provided with a part having aport ppi-ni'ngto atmosphere, a valve ,)iperating with said port, a heat-expair sible shell in said casing, a. pair of levers the inner portion of one of which has a. fork,

A h mm: portion of the. other lever extendlWWI: the branehes of said fork, the *r pm! ions of said lev ers being operatable said shell on the expansion thereof, said levers being supported for rocking motion between their ends, and means engageable by tilt inner portions of said levers, for closing the vnive on the expansion of said shell.

device of the described, com- :3. A prising a casingprovided nith a part having port opening to atmosphere, a valve in said casing, for controlling said port, spr'ng mes s acting against the valve and otinstsntly to maintain the same 1: beat expansibie sheii fastened in said easing, and mechanism imlnding spring means, for yieldingiy transferring the motion of the free portion of said shell to said valve in a direction to close the latter, on the expansion of said free portion, said last mentioned spring means being of greater tension than said first mentioned spring means and both said spring means being inclosed by the casin In testimony whereof I afiix my signature in presence of two witnesses.

CARL H. PETERSON. Witnesses:

HEATH SUTHERLAND. F. E. ANDERSON,

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