US899971A - Air-pump. - Google Patents

Description

c. A. BAGUE.

AIR PUMP. APPLIOATION FILED MAR.2e,19oa.

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,lila/Ira W/TNESSES G'. A. HAGUE. AIR PUMP. APPLIOATION FILED 141111.28, 190s.

Patented Sept. 29, 1908.

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G. A. HAGUE.

AIR PUMP. APLIUATION FILED M-A1z.zs, 190s.

Patented Sept. 29, 1908.

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` Beit known that I, 'CHARLES A. HAGUE, a

` condenser, and t v draw the water from water. The

UNITED ,srnrns Parana cierren CHARLES A. H'Aeun, or NEW YORK, N. Y.,

citizen ofthe United States, and 4a resident of the city of New York, borough of Manhattan, in thefcounty and State of New York, have invented a new and Improved Air- Pump, of which the' following ,is a-full, clear,

and exact description. Thls invention relates tocertaln unprovements lnair pumps, and more partlcularly to a type of pump especially designed for use with steam-condensing" apparatus for all typesof steam enginesfalthugh. the pump may be -employed vforanyy purpose where a very high vacuum is desired. .My invention involves connections between the opposite ends ofa double-acting pump and the upperjand lower :portions of a steam condenser or other vacuum chamber, whereby uponone stroke o'f the lpiston,`air or other as 1s Withdrawn fromtheu per portion o the chamber, and upon `t e return stroke, water or other liquid iswithdrawn from thelower. portion of the condenser, the pump being so constructed that" water is injected into the air end of the pump to insure the complete expulsion ofthe air and seal the -plSl/On..y 7.1 i A Myinvention also-involves means whereby the piston may serve to transfer `al portion of the` iguid from the liquid end of the pump to theair end of the pump during the suction stroke of the latter, to perform this sealing action.A -1 5.

Reference lis-to be had to the accompanying drawings, forming a part of this spec-iiication, in which similar characters of reference indicate corresponding parts in all the figures, andin Whic i l, f

Figurel lisa side elevation of a turbine showing one form of my improved pump, connectedfor operation` by the turbine and serving to create a vacuum in the condenser ofthe turbine; Fig. 2` is avertical section through a slightly modified form of pump; and Fig. 'Sis atop planview of the pump shown in Fig. 2.`

M com ination with any suitable form of pump, the former servingto remove? the air from the the' pump, aithou h the special form of for s ervinlge bet drawing t l specifaation o: 'Letters Patent.

' Applicationiled March 28, 1908. ,Serial No. 428,836.

lconstitutes no portion lthe lower wall of a c lclose :the openings therein. 418 may be provided for limiting the outward .supports on its up `down stroke of improved air pump'may be used in 'illustrated Vis very e: latter :serving to` .withj flexible iiap valve p ump 4illustrated -is' a apted the upward movement `of the `edges `purposes, that is,lwitl1 air and aljsowithdrawing the pump. may-he used .wiens sur-A ara-rmi.

Patented Sept. 29,. 19,0@

face condenser, a form of condenser, a vacuum pan, or v any other-chamber or vessel 1n which 1t 1s desired chamber to which th to produce a vacuum, 'asthe structure of the i e pump 1s connected, of my mvention.. The pump c linder may` be arranged to operate vertical y,'horizontally, or inclined, as will suit best the particular case to which it may be ap lied.

In ig. 2, I have illustrated a vertical section through one formof my pump operatively connected to a surface condenser of the tube type. he pump includes va vertically-disposed cylinder 10, having a piston 11 and a piston rod ,extending downwardly therefrom and throu h a packing box 12 in amber or passageway 13,-. which-receives the cylinder 10. The passageway 13 'is jof a width substantially equal to the width of the cylinder and is provided with a circular opening in its upper wall into which -the cylinder extends. e cylinder may, if desired, be provided withV an annular llange 14 resting on thewall of the chamber 13, so as to permit of the two being readily secured together and to support the cylinder. Inmates in an elbow 15 o ning upwardly, and Within the chamber andidj acent its connection withsaid elbow, Iprovide a suitable valve for permitting the flow` of liquid .through the chamber toward the cylinder, but preventing its return. Any suitable form of check valve may be employed, but I preferably provide a perforated valve seat 16, extending diagonally, and having a flexible flap 17 secured in place at the upper edge and adapted to engage with the valve seat to A suitable baiHe lower open end voi the jet condenser, or any other The chamber 13 termovement offthe ilap 17. The chamber 13 into which the the piston., The two chambers communicate by a port 20, having a suitable check valvefor Ward `flow of the liquid,

ut preventing its downward `flow.

vThe specific form of valve similar to the valve past which the liquid flows` to the chamber 13, and includes a perforaied valv sept Z1, a 22 an a uar 23 ine' g `n valve. l

` At the upper ende? the cyinder 10,' I proper surface, a chamber 1 9, V liquid is delivered upon thev ermitting the upwithin sai vide a chamber er passageway 24, leading with the chamber 19 by a vertical conduit 30,

and from this conduit, adjacent its connections with the chamber 19, there is provided a main discharge conduit 31. rlhe chamber 29 inay also be provided with an air escapeconduit 32 leading from the top thereof and serving to prevent the accumulation of air chamber. Leading to the inlet valve 25, there is provided a passage or conduit 33, and both this conduit and the elbow 15 are connected to the chamber in which it is desired to roduce the vacuum. In Fig. 2, this chamber is illustrated as a condenser having a tube Ysheet 34 through which.

the steam tubes 35 extend, and having a passageway or compartment 36 communicating with the interior of all of said tubes, and communicating at its upper end with the passage 33 and at its lower lend with the passage 13 through the elbow 15. The passage 13 is connected by a suitable conduit 37 with the passage 24 or the upper end of the cylinder, whereby upon the down stroke of the iston, a portion of the liquid within the ower end of the cylinder and the passage 13, may be delivered through said conduit to the cylinder at the upper side of the piston. The conduit is rovided with a suitable valve 3S, whereby tile flow of liquid through the conduit niay be controlled and the amount of liquid transferred from one end of the cylinder to the other, limited or prevented. The conduit 37 is preferably provided with a branch conduit 39 connected thereto, whereby liquid may be delivered to the upper end of the cylinder tlirou rh any suitable source independent of the elivery of liquid from the lower end of the cylinder.

In the o eration of the apparatus above described, tlhe pump piston 11 is reciprocated within the cylinder by any suitable power,

.and the valve 25 is either continuously or intermittently rotated. Upon the up stroke of the piston, the valve 25 is closed and the larger portion of the liquids or gases above the piston is expelled past the valve 27. As the gases are above the li uids, the former escape before the latter, andl I so regulate the device that all of the gas and a portion of the liquid will be expelled, so that as the piston starts on its down stroke, there will be no gas whatever in the cylinder or piston 24 below the valve 27. valve 22 remains closed, and the valve 17 On the up stroke, theeeen? 1' opens to draw into the lpassage .13, liquid from the lower portion of the condenser. Upon the down stroke of the piston, the valves 27 and 17 close autoinaticz'illy, and the valve 25 is positively opened mechanically through the instrumentality of any suitable mechanism connected to a valve stem 25l of the valve. The major port-ion of the liquid iii the passage 13 is expelled past the valve 22, although a portion of the liquid is expelled through the conduit 37 and delivered to the upper surface of the piston. This liquid serves to replace any which may have leaked past the piston or has evaporated, and insures the supply of sufficient liquid above the piston to completely fill thespace below the valve 22, when the pistonniakes the next up' stroke. As there is no air whatever in the passage 24 and the upper portion of the piston when the latter starts on its down stroke and when the valve 25 is opened, air or gas will be drawn from the condenser, if there be any air or gas therein, and an extremely high vacuum may thus be obtained. ln case sufficientv liquid is not delivered through the conduit 37 to accomplish the results desired, additional liquid may be admitted through the conduit 39 to supply the deficiency.

The liquid in the upper end of the cylinder not only serves to fully and completely expel the air therefrom upon the up stroke, but

4also serves to seal the piston and prevent thc escape of gas past the saine. The liquid in the passage 13 serves to eifectively seal the piston rod and prevent the entrance of air through the stuiiing box while the piston is on its up stroke.

The details of construction illustrated in Figs. 2 and 3 do not constitute the essential features of my invention, and may be varied widely without departing from the spirit of my invention. I have shown the chamber 24 integral with a ring or cylinder section 4t), intermediate the cylinder 10 and the cylinder head 41, and have illustrated thc cylinder head provided with a barile plate 42 in front of the entrance opening from the conduit 37. This construction permits of a ready separation of the parts for purposes of inspection or repair, and the baille serves to deflect downwardly the water from the conduit 37 into the cylinder- As previously stated, the pump may be operated. in any suitable manner, and it may be employed for creating a vacuum in any suitable chambcr. In Fig. 1, I have illustrated a modified 'form of pump, connected to the condenser 43 oi' a steam turbine 44. The

48 to a worm wheel 49. The worm' wheel `intermeshes with a Worm 50, which -is usually rovided 'on the turbiney shaft51 for operat- -v worm 50 upon the opposite side thereof from the worm wheel 49'. By vconnecting the pump to a turbine in thismanner, theturbine lshaft even. though rotated at an extremely high-rate of reciprocating pump' at a comparatively low speed,.and without thenece'ssity for addi-` tional gear wheels on said shaft. Inthe specific pump illustrated -in this ure, the.v end of a cylinder corresponding to t supper end-of the cylinder `shown 4in Fig. 2, Acommu,-

I nicates with avertical passage 24, havi a y rotary inlet' valve 25a operating outletvalve 27., Thisvalve pei-I mits the delivery of the air or other gases to a'.

chamber 29, from which they may escape through a conduit 3()I1 to the main delivery conduit 31a. to' the rotaryinlet valve 25 by a passage 33a. The end of a cylinder-corresponding `to the Alower end of` the form shown in Fig. 2, commumcates with avertical passage 13, the lower end of which cmmumcates with a passage 15"l leading to the lower end of the 'condenser'. At the upper end ofthe passage 13, Vthere is an automatically-operatingcheck valve 22,

permitting the flow of liquid into a chamber 19, from which leads the mainoutlet lcon- Having thus described niy invention, VI claim as Patent:

. 1. combination, a condenser and a pump for creating avacuiim therein, one end of saidpump being connected to the lower portion of said condenser and having an inlet and an outlet valve and serving to withdraw water from said condenser, and the opposite vend of said pump being connected tothe upper end of said condenser and having an inlet valve and an outlet valve and serving to i withdraw air vfrom the upper portion of the condenserv and a by-pass connectin he o posite ends of the pump, whereby pon t e air suction stroke of the pump, a portion of the water in the water end of e pump is transferred to the air end ofthe ump to insure the complete expulsion of t e air upon the return stroke.

2. In combination, a vacuum chamber, a

speed, is utilizedfor driving the.

4said passages,

andan automatical y. n

piston mounted therein,

The condenser 43 is connected new and desire .to secure by Letters 'i double-acting ump, one end of said ump servin to wit draw liquid from .the ower end o said chamber, the other end of said pump adapted to withdraw air from the uper end of said chamber, andmeans for trans erring i al portion of thel liquid withdrawn from the lower end of the chamber to the opv posite end of .the pump. A

3. In combination, a double-acting pump,

V including a cylinder, a piston, separate passages'commun'icating with the opposite ends of said cylinder, inlet and outlet valves in and a by-pass connecting the f said cylinder and serving for ef delivery of li uid from one end thereof to the opposite en thereof by the action of said piston.

4'. An air pump, including a cylinder, a

a passage communicating with said cylinder, a mechanically operated inlet valve controlling said assage, an automatically-operating check va ve controlling the outlet from-said passage, and at a higher elevation than said mechanicallyoperated valve and means for delivering liquid to said cylinder to completely iill said cylinder and passage to said valves, and to completely expel the air or gas upon the delivery stroke of the piston.` l 5. In combination, a condenser and .a pump forgcreating a vacuum therein, said -pump-including a cylinder, a piston and a piston rod, one end of said lcylinder being lconnected to the lower end of the condenser and having an inlet and an outlet"'valve serving to withdraw .water from the' condenser, and the opplosite end of said pump being coni'iected to t e upper end of the condenser and having an inlet and an outlet valve serving to withdraw air from the upper portion of the condenser, the piston rod extendinglfroin the cylinder at the first mentioned endthereof whereby the water-seals the piston rod, and means for introducing Water into the secondnientioiied end of the-pump to insure the,

`complete expulsion of air upon the air discharge stroke.

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

, CHARLES A. HAGUE. Witnesses CLAIR W. FAIRBANK,

EVERARD B. MARSHALL.

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