Патент USA US2413035код для вставки
Dec. 24, 19%. W, H, DE LANCEY v 2,413,035 FLUID SUPPLY APPARATUS FOR BURNERS Filed Sept. 16, 1944 3 5 Sheets-Sheet 1 w J W22; a’ l " | 7Z3/?1960 INVENTOR ' ' 24, 19%- w. H. DE LANCEY ‘ 2,413,035 FLUID SUPPLY APPARATUS FOR BURNERS Filed Sept. 16, 194-4 5 Sheets-Sheet 2 ec. 24, 1946- w. H. DE LANCEY 254135035 FLUID SUPPLY APPARATUS FOR BURNERS Filed Sept. 16, 1944 5 Sheets-Sheet 5 m/ V05 .90 FT?“ 8? 700 j /06 66624; 6 _ . /07 INVENTOR I Mmewllt?lcn BY 64%,,‘ _ v ' ' ATTORNEYS ' Dec. 24, 1946. w. H. DE LANVCEY FLUID SUPPLY APPARATUS FOR BURNERS Filed Sept. 16, 1944 v 2,413,035 - 5 Sheets-Sheet 4 - ATT/GRNEYS Dec. 24, 1946. 2,413,035 w. H. DE LANCEY FLUID SUPPLY APPARATUS FOR BURNERS Filed Sept. 16, 1944 5 Sheets-Sheet 5 , .1 \ ..~ @196 INVENTOR ‘M0 n/Z?rlnwzr BY ' v-Zul ATTORNEYS ‘ Patented Dec. 24, 1946 2,413,035 UNITED STATES PATENT’ OFFICE 2,413,035 _ FLUID SUPPLY APPARATUS Foa BURNERS Warren H. De Lancey, Spring?eld, Mass., assign or to Gilbert & Barker Manufacturing Com pany, West Spring?eld, Mass., a corporation of Massachusetts 1 Application September 16, 1944, Serial No. 554,367 5 Claims. (0]. 230-139) This invention relates to improvements in ap Daratus for supplying ?uids, such as air and oil, to an oil burner, such for example as an air atomizing burner to which both primary and secondary air must be supplied aswell as fuel. The invention, while capable of other applica tions, is primarily designed to supply small-size on the lines 2—2, 3--3 and 4-4, respectively, of Fig.1? _ ' Fig. 5 is a fragmentary sectional elevational view of the oil pump shown in Fig. 1 but drawn to a larger scale; Fig. 6 is an enlarged cross sectional view taken on theline 5-5 of Fig. 5; , burners, such for example as those used with hot Fig. '7 is an enlarged fragmentary end view water heaters, where oil is consumed at very low taken from the right hand end of Fig. 5; rates, say from one-twentieth to three-quarters 10 , Figs. 8 and 9 are fragmentary sectional views of a gallon per hour. Oil at such low rates can taken on the lines 8-8 and 9-9, respectively, of not be handled properly by the so-called pressure atomizer usually used in gun type burners and it Fig. 4: is necessary to resort to the so-called air-atomiz on the line“ Ill--I 0 of Fig. 2; , Fig. 10 is a fragmentary sectional view taken 1 ing nozzle. This invention provides the means 15 Fig. 11 is a small scale elevational view, show for supplying the air for such nozzle at regulated ing in more or less conventional form, the air pressure and also for supplying the oil at any and oil supply apparatus mounted on an oil selected rate over a range, such as that above set burner; forth, with an arrangement whereby the oil Fig, 12 is a much enlarged sectional elevational pumping rate may be readily and conveniently 20 view of the atomizing nozzle of the burner; and’ . varied while the oil pump is in operation. The invention has for one object the provision Fig. 13 is a much enlarged cross sectional view taken on the line I3—-|3 of Fig. 12. of an oil-supplying means, together with a cut Referring to these drawings and ?rst to Fig. 1 off valve; an air pump of the positive displace thereof, the apparatus includes a positively-act ment type, having a by-pass and a valve con 25 ing displacement pump I for supplying primary trolling the same; and means actuated by pres air to the burner, a variable-capacity positively sure of the pumped air for opening the oil valve acting displacement pump 2 for supplying oil to when the Dumped air reaches a predetermined the burner and a fan 3 for supplying secondary pressure and subsequently opening the by-pass air to the burner. Both pumps I and 2 and the valve when said pressure is exceeded, . 30 fan 3 are driven by an electric motor, of which The invention has for another object the pro the stator laminations are indicated ‘at 4, the staé vision in a single unit of an air pump, an oil tor winding at 5, the rotor laminations at 6, the rotor spindle at ‘I, as ?xed to laminations 6, and the rotor shaft at 8 as ?xed to the spindle 1. The' actuated by the air-pressure-control valve. 35 motor has a cylindrical casing 9 to which are The invention has for another object to provide suitably ?xed, as by‘ the bolts I 0 (Figs. 1 and 2), an electrically driven apparatus of the class de inner and outer end plates II and I2, respectively. scribed, mounted in the casing of the driving The inner end plate I I is secured, as by cap screws . motor and including a fan for supplying primary I3, to the fan housing II of the oil burner, The air to the burner as well as positive displacement 40 end plate II rotatably supports in any suitable pumps, one for supplying the secondary air and way the motor shaft 8 and on one end of the lat one for supplying oil to the burner, together with ter the fan 3 is ?xed, as indicated. . the necessary control valves and accessories for The end member I2 serves to support both said pumps. pumps I and '2, the air ?lter, the air-pump by The invention has for a further object the pro 45 pass valve, the oil valve and all the necessary pas vision in apparatus of the type described of vari sages and conduits which are associated with ous structural features which contribute to a these elements. The member I2 has a sleeve compact arrangement of all the necessary parts bearing I5, located coaxially thereof and rotat in a very small space. ably supporting the inner end IB of the air pump The invention will be disclosed with reference 50 driving shaft IT. The shaft end I5 extends to the accompanying drawings, in which-— through member I2 and has its inner end- suit Fig. 1 is a sectional elevational view of the com ably coupled to the motor shaft. ' ' plete apparatus for supplying air and oil to an As indicated herein, the coupling is of the oil burner; f speed-responsive type, having a drum I8 ?xed to Figs. 2, 3 and 4 are cross sectional views taken 55 shaft end I5; and a pair of weight segments I9, pump with means for varying its capacity, an air pressure-control valve, and an oil cut-off valve 2,413,035 3 each pivoted on a stud 20, ?xed to a ?ange of spindle 1. The weights are drawn inwardly by springs 2| and held thereby out of contact with the inner periphery of drum [8. When the mo tor attains a predetermined speed, the segments I9 will be thrown outwardly by centrifugal force to engage the inner periphery of drum I8 and drive the same and shaft I1, The speed-respon sive coupling has been indicated merely in con ventional form herein. It may be of any suit able and well known form, One suitable form is shown in my copending patent application, Serial No. 452,019, ?led July 23, 1942, patented Decem ber 5, 1944, No. 2,364,132. The air pump is best shown in Figs. 1 and 3. A deep cylindrical recess is formed in the outer face _ of end member |2 to receive a sleeve 22 which forms the liner for the pump chamber and which 4 1y spans the outer end of cylinder 42 and is se cured at its ends, as by screws 48, to member l2. The spring 46, acting between bar 41 and piston 45, holds the piston in the extreme inner position - shown leaving a space with which both of the passages 4| and 42 are constantly in communi cation. The piston 45 is movable to the‘left (as viewed in Fig. 1) when the air pump has built up suffi cient pressure to properly atomize the oil. This piston operates an air by-passvalve and an oil inlet valve as will later be described in detail. The end member l2 has a circular ?ange 49, grooved to receive a packing ring 50 of rubber or the like. A cup-shaped, pressed-metal cover 6| has its inner end partially telescoping ?ange 46 and its inner periphery engaged by ring'SO to close liquid-tight the joint between the cover and member 52. The cover is fastened in a manner is cylindrical but located eccentrically of the pump shaft H. The outer end of the pump cham 20 later to be described. This member and the cover have ?anges 52 and 53, respectively, to support a ber is closed by a member 23 secured to member ?lter screen 54, which encompasses the oil pump l2 by a plurality of cap screws 24. This member 2. The end member |2 (Fig. 8) has a tapped hole 23 has a sleeve bearing 25 for the outer end 26 of 55 adapted for pipe connection to an oil supply shaft l1. The pump rotor 21 is cylindrical with a circular series of angularly-spaced and longi 25 tank. This tapped hole is connected by a passage 56 to the annular space 51 between the cover 5| tudinally-disposed slots 28 in its periphery to re and screen 54. Within the screen lies the oil ceive one in each, blades 29, which are radially pump surrounded by an oil chamber 58. slidable in the slots and the outer edges of which The oil pump has a valve-controlled inlet pas engage the inner peripheral wall of member 22. The ends of the blades and the ends of the rotor 30 sage best shown in Fig. 1. A radial passage 63 leads from the lower part of chamber 58 radially engage the end walls of the pump chamber. The upward into the inner end of a cylindrical recess end faces of the rotor 21 have‘cylindrical recesses 21’, one in each, to receive rings 36. The ends of each blade 29 rest on the outer peripheral sur 60 formed in the oil-pump-housing member 23, above described. Threaded into and closing the outer end of this recess is a hollow bushing 6|, having a central oil inlet opening 62. The latter faces of these rings and are thereby held with the outer edge of each in contact with the inner communicates with one end of a radial groove peripheral surface of member 22. Inlet and out let ports 3| and 32, respectively, are formed as ar 63 formed in the inneriface of an end plate 64, cuate grooves in the inner end wall of the pump which is secured with member 23 to member II chamber formed by member l2. Air enters the 40 by the cap screws 24, above described. The other spaces between pairs‘ of successive blades from ‘end of groove 63 communicates with a slanting port 3| and is carrieddn a counterclockwise direc passage 65 in member 23 leading to the pump tion as viewed in Fig. ‘3 and discharged into the inlet port 66. port 32. This particular pump construction is one A needle valve 61 controls the oil passage 62. which is old and well known in the art. Further 45 A spring 68, coiled around the stem of this valve, description of it is therefore deemed unnecessary. acts . between bushing 6| and a snap ring 63, The particular form of pump illustrated is not es mounted in a groove in the stem, tending to open sential to the invention and is given merely by the valve. The latter is initially held closed way of illustrative example of one of many types against the force of spring 68 by the described of displacement pumps suitable for the purpose. 50 piston 45. Formed in the inner end face of hous Air is admitted to ‘port 3| by means of a passage ing member 23 is a tapped hole 10. Set into this 33 in end member l2. This passage connects with hole is a bellows 1|, the ?ange of which is clamped one end of a cylindrical recess 34 formed in the to the base of hole 10 by an annular nut 12. The inner face of member l2. Closely ?tted into this stem of valve 61 extends into the interior of bel chamber is a suitable ?lter, herein shown as a 55 lows 1| and engages the closed end wall of the felt 35 mounted between two wire screens 36. same. Leakage of oil around the stem of valve This ?lter is held in place by a snap ring 31, en 61 is prevented by the bellows. Formed in the gaged in a groove in the peripheral wall of recess member l2 coaxially of valve 61 and communicat 34, or in any other suitable way. Air reaches the ing with chamber 10 is a passage 13 and a slight ?lter from the air inlet 36 of the fan housing I4, ly smaller passage 14. V The described piston 46 through holes, such as 39, in end member II and has a stem portion 15 which is of large diameter some of the unused slots, such as 40, in the stator and hollow to receive the piston spring 46 and a laminations, as will be clear from Fig. 1. smaller portion 16 which bears on the end wall The air pump outlet port 32 is connected by a passage 4| (Fig. 1D) to the inner end of a cylinder 65 of bellows 1| and holds the oil valve closed. As soon as the air pump has built up su?lclent pres 42 which is formed in the inner face of end mem sure, the piston 45 will be moved by the pressure ber l2 as best shown in Fig.1. Also connected of the pumped air, moving stem 16-13 to the left with the inner end of cylinder 42 is a passage 43 as viewed in Fig. 1 and allowing oil valve 31 to (Fig. 2) which connects with a tapped hole 44, adapted to be connected to the air inlet 01' the air-v 70 open. When the piston has been moved to the left as far as possible, the end of stem portion 16 atomizing nozzle of the oil burner. Slidably will have drawn away from the end of bellows mounted in cylinder 42 is a piston 46, yieldingly 1|. Movement 01 the oil valve and the bellows is held in the illustrated and extreme inner position limited by the abutment of snap ring 63 with the ' by means of a spring 46. This spring has a seat in the center of a cross bar 41 which diametrical 75 inner end of chamber 10. The piston 46 can move auaose a greater distance (until it abuts cross bar 41) as extends longitudinally through member 23 and will be clear from Fig. 1. a substantial distance into end plate I! where it connects with .a radial passage 98, leading to a tapped hole 88 in plate l2. This hole 89 is adapted. to receive the oil pipe leading to the nozzle 01' the oil burner. The described adjusting stem 88 ot‘the oil a _ The by-pass for the air pump consists of the passage ‘M at all times in communication with the cylinder 42 and thus with the pressure side of the air pump; a diametrical hole 11 in the portion 16 of the stem of piston 45; an axial hole ‘I8 in the portion‘TG; the passage 13; the chamber 70 a pump is rotatably mounted in a centrally dis and a groove ‘I9 in the inner end face of member posed hub I" on the end plate 6| of the oil pump 23, which groove opens into the chamber of the l0 2. The outer end 01' this hub is threaded to air pump. The stem portion 16 acts as a valve receive a ?anged annular nut iili which serves to control this by-pass, its end face whenen to hold the described cover Si in place. The gaged‘with the bellows, closing hole 78. A suit cover has an interior hollow hub m2 which en able seal to, pressed into the hole ‘It and seated compasses the ‘ hub EM and which is drawn against the shoulder formed at the intersection, 15 tightly against the outer end face of end plate of holes ‘is and 1d, slidably receives stem portion 66 by nut iill to avoid leakage from chamber 58». is and prevents communication between holes The inner portion of hub i100 has an annular . ‘i3 and it except by way of holes ‘ii and ‘it. It groove to receive a packing ring W3 of rubber or will be clear that when the pump has built up the like to still further prevent leakage from the sumcient air pressure, the by-pass will open and 20 chamber. The hub lot has an internal groove enable excess air to merely circulate idly through » to receive a smaller packing ring iiltl of rubber ' the pump. The air pump has a capacity in excess or the liire which tightly engages stem so to pre of its requirements. That is, the one pump must vent leakage or" oil along the stern. This stem have a capacity large enough to supply burners of widely varying sizes and thus a lay-pass is 8%? is held against axial displacement by the handle so engaging the outer end face of huh we and by a. snap ring 865, mounted in a groove in stem 83, engaging the inner end face of the hub. necessary to take care of air not needed for the burner. The oil pump includes a cup-shaped rotor iii, The described stop pin 93 is ?xed in the outer ' end of hub :08. the end wall of which is ?xed to the portion 26 of the pump drive shaft. This rotor is mounted 30 The nut it! in its inner end has a circumfer in and coaxially oia cylindrical chamber formed ential groove in which is ?xed a snap ring m6. in housing member 23 and closed by end plate . The purpose or this ring is to enable the cover 5! , oil. A hole extends diametrically through the which sticks tightly in place because of the pack ing rings bi] and its, to be positively pulled off annular wall of the rotor, forming two cylinders @2. A single rod .83 extends diametrically of 35 when nut iti is unscrewed, ‘the snap ring abut- > the rotor and is slidably engaged as a, piston in each cylinder 82. Fixed to the rod 83 at a loca tion centrally between its ends is a cylindrical member which lies within the open, cupnlike end of the rotor and may, by adjustment, be positioned eccentrically or coaxially of the rotor. in the uter end face of the member 86 is a di ametrlcal slot 85 which slidably receives‘ a square block Engaged in this block is a round pin 9? which is fixed eccentrically of and on the in~ ting the shoulder it? on the cover for this pur- . pose. This avoids the necessity for the use of prying tools, such as screw drivers or chisels, and the possible damage incident to their use. _ In the use of the invention in connection with an oil burner of the air-atomizing type, the fan 3 supplies air from its housing It into one end of a tube m8 (Fig. 11), in the outlet of which is arranged a. body will, carrying the nozzle till. The air and oil discharge ports as and 95 of the supply unit are respectively connected by pipes iii and M2 to passages H3 and lid (Fig.12) in the body We. Fastened to the forward end of ner end of a stem 8%. In Fig. 6, 89 indicates the axis of rotation of stem 38. By turning the stem counterclockwise as viewed in Figs. 6 and 7 by they body we as by a cap H5, screwed on to the means of the handle so provided on the stem, the axis of pin lil- may be moved from its posi 50 body, is a nozzle body il§,'havlng a frusto tion or maximum eccentricity shown'in Fig. '5 conical outer end and a member iii, having a complementary shaped part to engage said end until its axis 99 coincides with the axis d2 of the pump rotor ti. Thus, the capacity or’ the pump and having the nozzle ori?ce lid. The nozzle may be varied from a maximum to zero by in crements as small ‘as desired. ' body H6 has a central oil discharge passage A stop pin 98 55 H8 communicating directly with passage Ht. (Fig. 7) limits the movement of handle til by Formed between the abutting end of the bodies. abutment with shoulders 9d on the handle to the IE8 and H6 is an annular passage H9, receiving air from passage lit and discharging it through limits described. As the rotor 8i rotates coun two longitudinal passages I20 in body He. The tel-clockwise as viewed in Fig. 6, the outer end of one of the cylinders 82 (the upper one) will 60 passages H8 connect one with each of two slots communicate with the pump inlet port 88. This i2! (Fig. 13), the inner ends of which open tan is an arcuate groove which is formed in member gentially into a whirl chamber I22, formed be 28 in encompassing relation with the pump rotor tween the mating frusto-conical parts lit and Si. As the rotor turns the upper cylinder d2 H'HFig. l2) and surrounding the frusto-conical draws out from its piston, creating a partial vac 65 end of the oil nozzle. Air entering through slots uum to draw in oil and ?ll the cylinder. Mean~ i2i is whirled around in chamber i22 and issues while, the other cylinder which had previously from nozzle are in a whirling stream, surround been ?lled, is brought into communication with ing the oil stream. the outlet port 95, which is formed similarly to In operation-on a call for heat from the burner, port 86 but on the opposite side of the rotor. 70 the electric motor is started in any suitable way, As the‘ rotor turns, the lower cylinder moves in usually automatically in response to a thermostat. on its piston to force out the oil into the outlet The fan 3 is driven with the motor and is ?rst port 95. vbrought wellup towards its maximum speed be fore the speed-responsive coupling operates to sage 98 (Fig. 9) to one end of a passage 91 which 75 connect the pump and motorshafts i1 and 8 The outlet port 95 is connected by a radial pas~ 2,418,085 7 the air tube I08, the combustion chamber to member having -in one end a cylindrical pump chamber with an inlet and an outlet conduit therefor and in the other end a coaxial bearing, which it delivers, and the several passes and fines of the heating apparatus. Secondary air, at a bearing for driving said rotor, said member also sufficient rate to secure good combustion, is avail able at the burner nozzle before the pumps .l chamber a cylindrical chamber with one end wall and drive the oil and air pumps 2 and i, respec tively. This allows time for the scavenging of and 2 are started. Even then actuation of the oil pump 2 is ine?ective until the air-pump i has ?rst built up the necessary pressure to insure a supply of primary air at the necessary rate ‘to a pump rotor in said chamber, a shaft in said having between the second end and said pump thereof in parallel closely-adjacent and partially overlapping relation with the adjacent end wall of the pump chamber‘ one of said conduits inter connecting said chambers through the overlap ping portions of said adjacent end walls. the atomizing nozzle. Then, the oil valve 61 opens 2. In apparatus of the class described, a body to allow ?ow of oil/to the nozzle. On stopping member having in one end a cylindrical pump of the burner, the electric motor is deenergized chamber with an inlet and an outlet conduit and, after its speed diminishes to a certain point, therefor and ‘in the other end a coaxial bearing, the speed-responsive coupling disconnects pumps a pump rotor in said chamber, a shaft in said I and 2, whereby the oil flow will be quickly out bearing for driving said rotor, said member also off by the drop in pressure of the primary air. having between the second end and said chamber The ?ow of oil to the burner nozzle is thus stopped ahead of the ?ow of primary air to avoid poor 20 a cylindrical chamber with one end wall thereof in parallel closely-adjacent and partially over combustion. The fan 3 continues in operation lapping relation with the adjacent end wall of after both pumps i and 2 have stopped in order to scavenge the burner. ‘ the pump chamber, a filter for air mounted in the It will be noted that the size of theair passages in the atomizing nozzle will determine the rate of air flow when the predetermined pressure of air has been established by the pump i. Then, and only then will flow of oil to the burner be permitted. The oil rate is conveniently regulable, second chamber, said inlet conduit interconnect ing said chambers through the overlapping por tions of said adjacent end faces for the delivery “apparatus and maybe turned by as small in» crements as may be desired to vary the capacity bearing for driving said rotor, said member also having between the second end and said pump of the oil pump from zero to the selected max thereof in parallel closely-adjacent and partially of ?ltered air into the pump chamber. 3. In apparatus of the class described, a body member having in one end a cylindrical pump even while‘ the pump is in operation, by means 30 chamber with an inlet‘ and an outlet conduit therefor and in the other end a coaxial bearing, of the member 90. The latter is located outside ' a pump rotor in said chamber, a shaft in said the casing 5| which encloses all the rest of the imum. ' The invention provides a compact arrangement . of parts‘ enabling both pumps together with the necessary valves, a screen, a ?lter, controls and chamber a cylindrical chamber with one end wall overlapping relation with the adjacent end wall of the pump chamber, a movable wall mounted in thesecond chamber and spaced from said end conduits to be provided on the end plate of the 40 wall thereof, the outlet conduit for the pump in terconnecting said chambers through the over lapping portions of said adjacent end walls, said supply chamber. The arrangement of the cham member having a by-pass interconnecting the bers 34 and 42, either or both, inone side of the second chamber and the inlet of the pump cham end plate or body member i2 and the air-pump ber, a ‘valve controlling said by-pass and con chamber in the other side of the member is nected to be actuated by said movable wall, and thought to be important. The ?lter and air pres yieldable means tending to move the movable wall sure chambers 34 and 42 are arranged on opposite toward said end face of the second chamber in ’ sides of the bearing i5 and in closely adjacent opposition to the pressure of the pumped air. relation therewith. These chambers 34 and 42 4. In apparatus of the class described, a body 50 have end walls which each overlap input the’ member having in one end a cylindrical pump air-pump chamber and the passages 33 and 4i~ chamber with an inlet and an outlet conduit are provided through the overlapping portions of therefor and in the other end a coaxial bearing, the adjacent end walls of the chambers... The a pump rotor in said chamber, a shaft in said ?lter and'pressure chambers lie between the’same two transverse planes. One of these planes coin 55 bearing for driving said rotor, said member also having between the second end and said cham cides with a plane in which one end of bearing ber a cylindrical chamber with one end wall i5 is located and the other of which lies between thereof in parallel closely-adjacent and par the two planes in which the ends of bearing I5 tially overlapping relation with the adjacent wall are located.' The inlet and outlet passages 3i of the pump chamber, a movable wall mounted and 4| of the air pump may thus be made very in the second chamber, yieldable means tend short and straight. The by-pass for the air pump ing to move said movable wall toward said end is also made- as short as possible by extending it wall of the second chamber, said inlet conduit along, and closely adjacent, the periphery of the interconnecting said chambers through the over air pump I from the pressure chamber 42 to the more remote end wall of the air pump. Also, 65 lapping portions of said adjacent end walls, ' whereby said movable wall may be moved by the both the air by-pass valve 18 and oil cut-cit pressure of the pumped air, said member having valve 61 are located in coaxial relation with the an outlet from said second chamber for the movable wall or piston 45 of the pressure control pumped air and a by-pass from the second cham device. Radially, all parts are kept‘ within the limits of the motor casing 9 and axially, the parts 70 ber extending parallel with the axis of the pump chamber and closely adjacent the periphery are kept within reasonably small limits in view of thereof and entering the other end wall of the the provision of two pumps and two control valves pump chamber, and a valve controlling said by and the rate-varying-means for the oil pump. pas; and actuated by movement of said movable I claim: 1. In apparatus of the class described, a body 76 driving motor within a casing, forming an oil wa . ' 2,418,085 ' 10 9 5. In combination, an electric motor including a casing, end plates and a- rotor shaft; housing connected to one end plate, the having an opening interconnecting said ing and the interior of the motor casing, 9. ion latterv how aim in said housing on one end of said shaft, an air pump chamber in the outer face of the other end plate, a pump rotor in said chamber and coupled to said shaft. the last-named end plate having an outlet for said pump chamber and in its inner lace a chamber. and a ?lter in'the last named chamber, the ?lter chamber being eon neoted at one end to the interior 0! the motor casing and at the other end to said pump cham ber. ' r " - WARREN H. DE LANCEY.