US1149915A - Automatic trap. - Google Patents

Description

.Nimm

w/EES #am M E. R. HAWLEY.

AUTOMATIC TRAP. APPLICATION FILED Nov` 5. 1914.

1,149.91 5. Patented Aug. 10, 1915.

24 SHEETS-SHEET 2.

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messia To all'fwhom t may concern:

Be it known thatI, Allnean R. HAWLEY, acitizen of the VUnited States, and a residentr of. Salt Lake City,fin`the county of Salt Lake and `State of Utah, haveinvented certain new4 and useful improvements 1n Automatic Traps, of which the following is a specilication.

My invention relates to' steam systems, as for heating and other purposes, yand the main object is to provide means for automatically producing a vacuum in the pipes of such systems without the necessity for the pumpsl at present employed. t

further object is to Vprovide means Vfor producing this result by means of the water of condensation, as from radiators, coils, condensing units, etc.; and further objects are to provide such deviceswhich are very simple in construction, readily installed new or existingfsystems, entirely automatic in operation, requiring norpumpingmeehanism, highly eliicient, operative at the mo` ment of need, composed of but 'few parts not likely toget out of order to require repair, and very inexpensive.

My invention is. fully described in the fol@ lowingv specification, of which the accompanying drawings-form a part, in which the separate parts are designated by the same reference characters in eachof the views, and in which Figure lis a longitudinal, vertical, section taken through a trap constructed in accordance with my invention, with Vthe parts in the positions of one stage of the operation; and Fig. Q is a similar view with the parts in another stage, y Y

ln the drawings forming a partof this application l have illustrated one formiof vembodiment of my invention, comprising 'a tank o into which the return pipet of a steam system. deposits the water of condensation, a check-valve 5 being provided inV the tank 3 backwardly through the pipe 4,.

and the check-valve 9 preventing the backing up of fluids from the pipe 8 to the tank 3, and this checkevalve is of such Vform as t0 ,Specification of Letters Patent.

lf'atented 16,

`applicati@'mea November 5,1914. ser-m1 m1870504. f

resist the weight of thei'water in the tank 3 at all times.

lArranged within the tank 3, `at one end thereof, is an aircompression chamber 11 -having a U-shaped pipe 12 at thebottom thereof and v'which pipe is formed rinto a nozzle 13 at its outer end and which nozzle is directed inwardly of the tank 3, and at the other end of said tank is :a float chamher 141 having a float l5 therein which carries a rod 16 thereover and tothe upper end of which is connected'a valve 17 normally closing steam inietport 18 between the steam pipe 7 and the tank 3, and l may also employ a supplemental float 19 torassist the float 15 to raise said valve 17 from its seat, but'the latter float 19`is not connected Vwith the valve steam 16, merely bearing against the under side of a stop 2O thereon in the Vraising roperation of the valve 17, and it will be noted'that theiioat lchamber 14 eX- tends well toward the top ofthe tank 3, for reasons Alater explained.

imprisoned, by. means of-a casing 21beneathfthefloat chamber 14E `is a oat 22 system passing into said tank through the water iny the tank rises and raises thefloat 22 until the valve 23 thereon shuts the port 24 in the Chamber 14 this chamber being of courseV empty at thisl timegthe air compre-s'- sion chamber 11 is free from water also at this time, but vsome water remains in' thev nozzle pipe 12t`o form an air ',seal, and-the Water in the tank?) continues to rise until it reaches the-top of the float chamber 14 and' into which it begins to flow, thereby raising `the float 15 and lifting the valve l17 Vfrom its seat. Live steam from the boiler is now free to enter the tank 3 from the pipe 7 and, when the pressure therein is sufliciently great, approximately that of the pressure within the boiler,the check-valve`9 is opened and the water inthe tank 3 begins to escape. rlhis steam pressure also forces waterr capes, the valve 17 is closed and the steam is prevented from entering the tank-3. T he tank is', at'thisv time, still filled with thev live steam but no longer under pressure from the boiler and, thus, not of sufiicient pressure to resist the expansion of the air compressed within the chamber 11, this expansion forcing the water in said rchamber 11 and in the pipe 12 thereoutof, preferably in a .fine spray directed over a considerable area of the tank 8 and which immediately condenses ther steam within the tank 3 and thereby causes a vacuum therein which is also caused in the return pipe 4 of the steam system, and live steam is thus drawn through the system, the tank 3 again fills, and the operation is repeated as long as the steam is on.

The supplemental float 19 may or, may not be provided, as its use will depend upon the resistance of the steam within the pipe 7, and it will be noted that this float may fall with the water without any effect upon the valve 17, this valve only being lowered when the lioat chamber 14 is emptied upon the opening of the port in the bottom thereof; in the drawings I have indicated the normal positions ofthe check-valves 5 and 9 bythe reference characters and y, respectively, although these positionswould have'been clearly understood by anyone skilled in the art to which my invention appertains, and, as stated, any suitable type of check-valve may be employed providedthat they operate in the manner described.

lVhile have shown a present preferred combinationof elements producing the desired result, I do knot limit myself thereto, as many other forms thereof may be des` signed which will incorporate the principles y involved `and be as efficient as the form shown, or, possibly, more so, which will not vbe a departure'from the spirit of.my inven tion, or` which willnot sacrifice its ad-y vantages.

Having fully described my invetnion, what I claim as. new, and desire to secure by Letters Patent, is f 1. In combination with the return pipe of va steam system, a steam-tight tank having a chamber therein of relatively small diameter, open at its top, a discharge pipe and a steam inlet pipe for sa-id tank, a float 'in said chamber, a valve for said steam inlet carried by said float, means for condensing steam in said tank v'to produce a vacuum therein, andmeans for preventing thefupward movement of said float and valve until the accumulated water of condensation in said tank overflows the top of said chamber.

2. In combination with the return pipe of a steam system, a steam-tight tank having a chamber therein of relatively small diameter, open at its top, a discharge pipe and a steam inlet pipe for said tank, a float in said chamber, a valve for said steam inlet carried by said float, means for condensing steam in said tank to produce a vacuum therein, and means for preventing upward .movement of said float to actuate said valve until the water of condensation voverflows the top of said chamber, said chamber having a port in the lower end thereof, and said means comprising a supplemental float and a valve thereon adapted to close said port to prevent the accumulating water of condensation from entering said chamber.

3. In combination with the return pipe of a steam system, a steam-tight tank having a chamber therein of relatively small diameter, open at itstop, a discharge pipe and a steam inlet pipe for said tank, a fioat in said chamber, a valve for said steam inlet carried by saidy iioat, means for condensing steam in said tank to produce a vacuum therein, means for preventing the upward movement of said lioat and the valve'until the accumulated water of condensation in said tank overflows the top of said chamber, and a supplemental float for insuring valve operation in the event 'of said first named float being rendered inoperative.

In testimony wherof I have signed my name to this specification in the presence of two subscribing witnesses.

EDGAR RAY HAWLEY.

Witnesses:

FRANK W. WILLIAMS, MARGUERITE A. KLoTz.

Copies of this patent maybe obtainedfor five cents each, by addressing the Commissionerk of Patent Washington, D. C.

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