US948520A

US948520A - Valve for blending hot and cold fluids.

Info

Publication number: US948520A
Authority: US
Inventors: Spencer G Neal
Original assignee: California Valve and Air Brake Co
Current assignee: California Valve and Air Brake Co
Publication date: 1910-02-08
Anticipated expiration: 1927-02-08

Description

N EA VALVE FOR BLENDING- HOT AND GOLD FLUIDS,

APPLICATION FILED MAR.3, 1909.

Patented P91061910.

@uhtur'ssvs 4%, MIT

3% 5 he J2. Ame-KA- iSPENCER NEAL, 315 L653 ANS-E3135 .531 "L CQEEPA'N', EALEES; GiLlFfifi-ll'ifij'il CDRPQEATION CALE- VALVE F6131? ELENDKITG HUT EJBTD COLD FLUIDS. 52 Specification of Letters 19mm. Pme emi Fee. 8 21%162. I A yglicetion' March 3, 1909. Serial Ho. 451,193.

To all whom it may concern: cold Water to the valve. 5 designstes the Be it known that l. Erszeoee G. NEAL a 19111 ort ior controllm the admission of itizen of the Unitecl Suites, residing at Les ingeles, California, have invented a new not useful Valve for Blencling Hot and old Floitls, of which the following is e specification.

Objects of this invention are to improve upon valves of its class'in resgectto simplicity. ease of ooeretion, capacity for eilecnng control oi the currents flowing through the valve with less movement thereof, durability and provision against leek ing or getting out of older.

A further object is to provide in combination with other features of the valve, an arrangement, that will cause the colrl water necesssrily to begin. flowing first to prevent accidental scalding of the operator.

ll ith these objects in View the inveniion consists in the various combinations of. parts and features of constiuction ciescrilzveel in connectioii with. the accompanying drew ings ailil lillfil'l particularly pointed out; in the claims.

Referring co the staying drawings which illusti'ete the invention in the form at; oreseni; reiereble,-Figure 1 isv e. vertical. sectioe oi. the complete valve on line e---w of Figs. 5 and e. -2is a View o2. e. fregmetnt of Fig. 1 showing the valve: cing in e. cliiieien; position. 3 anti 4: are similei' to Fig. 2 e .cept that. the valve plug is shown in a 'tliirei eifrl fourth position. Fig. 5 is e tixnsverse section on line cc of 1. Fig '3 2i transverse section the plug being partly oi the valve casin broken away. Fig. 7 is a transverse section of the valve plug in the position shown in l, the handle being applied themed at a dii'l'erenl; angle. 8 is a View of the valve log looking at large end thereof, lleieasing in detail to the The concluic- 1 provided 1 e. e lower section i having an inlet b nch 2 for lio'. we'tei -..icl1 leads into g extending 3 and. communicates with cer poi-non of the valve casing 4i casizigpoi't 5. Seicl sec-ion l 1 lie'ezlco 5 from which colcl Water 4 s '5 and.

emission ceiiizz oems, esszei ioze T6 oemsomiie'iveiivzs hot water, said port corresponding in shape and size be the casing inlet port 5 with which it coopereies. ceicl inlet: passages 3 and '7 are preferably segi'nentel in crosssection, beiiig seperetecl by a partition 1Q,

as best sliownin Fig. 5. At the point where said passages enter the valve cesingthey conform to the shape. ofjghe"

elongetedixilet ports

5 and 8 best shown in Figs. 1 and 6. Within eive'cesing 4; is rotetively' fitted. hollow valve plug 11 preferably in em shape of e tiiuiicated cone-L Said valve plug is 'providezl'with an outlet port 12 to e'stablist and out oi? communication with the casing outlet port 14 which leads to the,

spent 15 provided with an outlet passage L6. Plug 1L is'provideii at its large eml with a cross oer it? to which is eitecheden opcrating stem 18, which projects through an inteinelly threaded tubular extension 22, having an internally convexed portion 22' to provide sufficient room within "the stufiing-box without. the necessity of having the stuffinglaox oroject unnecessarily from the end of the we ve casing. 'lhe cross bar 17 of the plug is likewise-de qressed to make room for the stuifing-box.

The large end of. tlie velveis open above and. below the 17 so that the fluid; pressure is admitted to that end of the plug. 0 hold the valve constantly seated. This construction cooperates-With the arrange ment of the ports for always supplying pressure toehe interior of the em. extension '22 of cap 21 is screwed a packing nut 23 therebeing an inwardly projecting @nto said gland 22 therein to compress the packing, 3

said cap, nutand gland combining to form the smiling-box around the stem 18. The other end of plug 11 is .provided with e short stem 25 which .io'jects fi'om a Wall 26 ice I yoke is limited l'i'l its movement by :1 stop the op oi the spout also serving as e stop t6 coiiperate with the yoke. Said stops are so positioned as to revent both the inlet ports and 8 being osed at the ame time.

31 is the usual supporting flange which cooperates with the nut 32 to attach the Valve to the bath tub or other fixture (not shown).

33 is a union for uniting the upper and lower conduit sections 1 and 1 In operation, referring first to Fig. l where the valve is shown closed, in order to turn on cold water the plug is rotated in a clock wise direction until the outlet port 12 thereof is moved partly into register with the cas ing outlet port 14 thus bringing the plug into the position shown in Fig. 2. In passing through this movement. the cold water plug port 9 is at all times fully opened to the cold water inlet 7, but the outlet is not fully opened until the close of the movement.

The hot water, however, is entirely shut oil from the casing inlet port 5 during the en tire movement Just described. In order to blend hot and cold water the plug is moved further in .a clock-wise direction from the position of Fig. 2 until the plug port 5 is partly in communication with the casing port 5 and the plug port 9 is moved partly out of register with casing port 8. it will heseen that the outlet is now wide open by reason of plu port 12 standing opposite to the casing out et port 14. In order to turn on hot water only the plug is moved still farcation with the hot Water inlet port 5. The

stop 29 is so positioned as to engage yoke 27 in such a manner as to properly limit the range of movement of the operatin handle. The cold water inlet port 9 of the p ug is desirably about twice the width of the hot Water inlet ort 5* of the plug. Said ports are so positioned with relation to each other and to the discharge port 12 of the plug, that, in rotating the plug to open the valve from the closed position, as soon as the discharge port has become-fully opened it the clock-wise movement is continued, the cold water inlet port begins to close and the hot Water port begins to open. Such movement of the plug as will open the hot water inlet will, to the same extent, close the cold water 'inlet, and vicewersa, permitting an adjustment bf the plug to furnish fluid of any temerature between the hot and cold supply. pen the hot water inlet being fully opened the spout engages the handle and acts as a stop therefor. The segmental extent of the plug ports 12 and 9 is for each port substantially twlce that of the hot water inlet port easeao 5 in order that the outlet port 12 may be i brought to full open without closing the cold water port 9 and Without opening the hot Water port 5 and also so that upon a further movement of the valve the outlet port 12 shall remain fully open during the act of closing the cold water port 9 and ing of the hot water port In order to secure the performance of the above described operations and cause perfect the open blending of the hot and cold water above set forth, when the valve is used in combination with a valve casiughaving a port adapted to discharge into a horizontal spout, the hot water passage 3 is provided with a curved upward portion 3 which opens downwardly into the upper portion of the valve casing, while the cold water supply passage communicates with the lower side of thevalve casing.

lVhen combined with the fixture illustrated in the drawings the

casing ports

5, 8 and 14 are spaced apart substantially onethird the distance around the valve seat, the

ports

5 and 8 being approximately in vertical alinemcnt and located back of the center of the valve seat and the port it at the other side of the center of the seat discharging into the horizontal spout 15.

I claim:

l. in combination with a valve casing having an interior seat and two inlets and a lets and a single outlet in said conical seat,

spaced aroun the seat, of a truncated conical hollow valve plug having its larger end open to the interior ofthe casing and provided with two inlet ports and anoutlet port spaced apart around the plug, one of the inlet ports and the outlet port in this valve plug having approximately twice the segmental extent of the other inlet port, a device for rotating saidplug, and, means for restricting the rotationof said plug.

3. The combination, with an upright conduit having a double inlet passage and a sub stantially horizontal discharge spout projectiiig therefrom, of a rotatable horizontal valve plug to control'the communication between the inlet passages and spout, a radial operating arm connected to an end of said plug. and a stop, said spout constituting another stop, said stops limiting the movements of said arm to control the operation of the valve.

4. An upright supply conduit provided seaszo with two inlet passages, a valve casing formed on the upper end and at one side of said conduit, said casing having a horizontally extending valveseat circular in crosssection, one of said passages communicating with the lower portion of said seat, and the other of said passa es communicating with the upper portion of said seat, said inlet passages both being located within a semi-circumference of each other with respect to the valve seat, there being a discharge port lead ing from the side of said seatopposite said inlet ports, a hollow valve plug rotatively fitting said seat said plug being provided with inlet ports difl'ering in segmental ex tent to cooperate with the casinginlet ports, and having a discharge port to cooperate with the casing discharge port.

tions, whereby the proportions of the two liquids to be mixed may be exactly varied without restricting the volume of the outflow a device for rotating the plug and means for restricting the rotation of the valve.

'6. In a valve for blending fluids of difierent temperatures, a valve casing provided with a hot water inlet port and a cold water inlet port and an outlet port, a truncated hollow valve plugrotatively fittingsaid casing and adapted to be held to its seat by the pressure of the supply said plug having a cold water inlet port and a hot water inlet port to cooperate with the corresponding inlet ports of the casing, and means for rotating said plug, said means being limited to a movementsuch that at all times one orboth of the inlet ports admits waterl'o the interior of the plug, the arrangement of the inlet ports being such that when the supply is turned on the cold water inlet closes to the same extent that the hot water inlet opens,

so that the amount of liquid "discharged remains constant after the hot water begins to In testimony whereof I have hereunto signed my name in the presence of twosubscribing witnesses at Los Angeles, in the county of Los Angeles and State of California, this 24th day of February 1909.

SPENCER G. NEAL.

l/Vitnesses W. H. SHEAsIiEY, ALBERT H. MERRILL.