Jan. 7, 1947. T. LANGAN 2,414,046 BILGE PUMP ' Filed July 17, 1945 2 Sheets-Sheet 1 Thomas Lamp“, 36% 774M?“ g. - Jan. 7,\ 1947. T. LANGAN ‘ 2,414,046 BILGEZPUMP Filed July 17, 1945 . __ 4 Z0 . . ,‘ I ' 2 sheets-sheet 2 4,2 4| 4 Vi 4.3 Z0 , l l . “5km I . Z IrwQn’cor omens Lancécm, (533%; wam'? I I Patented Jan. 7, 1947 2,414,046 UNITED’ ' STATES PATENT OFFICE 2,414,046 BILGE PUMP Thomas Langan, Annapolis, Md. 1 Application July 17, 1945, Serial N0. 505,594 3' Claims. (Cl. 103-150) ‘This invention relates to deformable chamber pumps of the diaphragm type, and more particu larly to the top construction thereof and the operating means for the diaphragm. The primary object of the invention is to pro 2 casing when the pump is inoperative so that the operated handle will not project upwardly from the pump casing. This and other objects will be apparent from , speed, simplicity in operation, compactness and the following speci?cation and drawings, in which: Figure l is a top plan view of the pump casing, ruggedness are of the essence. These require ments seem to congregate in the bilges of boats pump. vide a manually operable pump capable of han dling large volumes of water or other ?uid where wherein all too frequently the bi1ge water is not noticed until it has become a demonstrated hazard. To meet the above requirements, it is intended to provide a pump having, a low intake ‘and de livery tube-like box, having intake and exhaust and Figure 2 is a vertical sectional view through the Referring now to the drawings, particularly Figure 2 thereof, reference numeral I indicates a base framework adapted to support the pump in any suitable manner, while reference numeral 2 15 indicates a rectangular elongated hollow box, preferably formed of sheet metal, and having an flap valves spaced therealong and operated in the same direction, a relatively large chamber above open inlet 4 and an open outlet 5 therein. An and water is driven under atmospheric pressure with inlet and outlet pipes or conduits which may nularly apertured plates 6 are secured to the box the tube-like box and positioned above the in take and exhaust ?ap valves, the chamber having 20 end for mounting threaded pipe sections 1, the pipe ‘sections 1 being preferably welded to the a large actuatable diaphragm therein whereby, apertured plates 6,‘ as‘ indicated, the threaded when the diaphragm is lifted upwardly to expand pipe ?ttings ‘I permitting threaded engagement the chamber, the exhaust valve is pulled closed be arranged to suit the needs of the particular through the intake valve and when the dia 25 problem. phragm is driven down to compress the chamber Valve plates 8, comprising annular apertured the intake valve is closed and the water is driven out through the outlet valve. A more speci?c object of the invention is in providing a substantially continuous chamber from the tube-like i box with the diaphragm chamber positioned so that the diaphragm chamber will have a direct pressure action upon the tube-like box chamber, thereby permitting the diaphragm to be actuated in short easy strokes without sucking air from the intake as the bilge water recedes towards the level of the intake opening. With this particular relationship, there is provided a diaphragm of rectangular plates of the same width as the box 2, but considerably longer than the height there of are welded as at 9 to the top and bottom of the box 2, and so as to be inclined in the same direc tion. Apertures in formed in the plates 8 have Valve coverings therefor, the valves comprising flexible rubber discs II which are bolted as at I2 to the upper faces of the plates 8, the discs being su?iciently larger than the apertures l0 so as to form a seat therearound. The rubber discs I I are weighted and ‘reinforced by suitable discs 13 and M, the discs l3 and I4 being bolted to the rubber ?exible, preferably resilient material such as rub disc H as at 15. ‘ her, a reinforcing stiff central portion connected 40 The box 2 is provided with an opening in the to the diaphragm, substantially centrally thereof, upper wall thereof as generally indicated by ref erence‘ numeral l8, which opening is positioned between the valves and extends directly into the arm is provided with two handle openings, one of said openings being capable of frictionally re 45 lower portion of the diaphragm compartment. The diaphragm compartment is formed by a ceiving an operating handle. , lower casing or shell 2!! which is Welded or other Still more speci?cally, it is an object of the wise secured in sealing relationship to the upper present invention to provide an upper housing or portion of the box 2. The shell 20 terminates in casing for the diaphragm ‘chamber having a well its upper portion with an annular flange 2| so extending thereacross into which the crank arm that the lower shell 20 may be bolted to the up is adapted to operate in order to provide a com lugs upstanding from the reinforcing central por~ .tion attachable to a crank arm wherein the crank per shell‘ 22, theupper shell also terminating at its lower portion in an annular ?ange 23. The Still another- object of the invention is to per flanges. 24 and are preferably bolted together mit the actuating handlefor the crank arm to, be housed within thewell ofjthe upper diaphragm ,, ' at a pluraiity of spaced.’ points as. at 24,, such con, struction permitting a clamping action about the pact housing pump structure. 2,414,046 This application is a continuation-in-part of periphery of a ?exible resilient rubber diaphragm 25. The diaphragm 25 has bolted thereto, and on the under side thereof, a metallic disc-like mem ber 26, and on the upper side thereof a disc-like member 21, the'two discs 26 and 21 being bolted to the ?exible diaphragm 25 substantially cen trally of the latter by means of suitable bolts 28. Cross bars 29 are secured to the inner portion of the lower shell 20 in any suitable manner so as to act as a bottom stop for the ?exible diaphragm, the bars 29 being so positioned to contact the lower disc 26. The upper disc 21 is provided with a pair of spaced upstanding lugs 30, the lugs 33 having elongated, substantially horizontally ex tending lost motion slots 3! therethrough, The driving means for the diaphragm includes a crank arm 32 pivoted by pin 33, the pin 33 being secured through plates 34 (see Fig. l) which plates 34 are secured to either side of a deep well 35 formed in. the upper shell 22. This well 35 extends substantially through the diameter of the shell 22 for reasons hereinafter explained. The lower end of the crank arm 32 is secured to the my co-pending application Serial No. 562,654, ?led November 9, 1944, for Bilge pump, issued on August 14, 1945, as Patent No. 2,382,797. I claim: 1. In a pump of the type described, passage means forming an elongated substantially hori zontal passage having inlet and outlet openings therein, one-way valves operating in the same direction spaced along said passage, a chamber positioned above said passage, an opening in the upper portion of said passage means forming a continuation of said horizontal passage into said chamber, said chamber being formed of a rigid shell having upper and lower portions, the lower portion of said shell contacting the upper por tion of said passage means and being secured thereto, a ?exible elastic diaphragm extending substantially horizontally across said chamber 20 and having its edges clamped between the upper and lower portions of said shell, means positioned in said shell adjacent the upper portion of said horizontal passage adapted to contact said dia upstanding lugs 30 by means of a cross bar 40, the cross bar extending through the elongated slots 3 l. ' The upper portion of the crank arm 32 is pro vided with two cylindrical apertures 4i and 42 for the insertion of a crank handle'43. These apertures are offset from one another to a degree slightly less than ninety. The crank handle 43 may be secured within either of the cylindrical openings 4! and 42 by frictional engagement therewith or by means of a suitable cotter pin 44. In operation, the handle 43 is preferably in serted in the cylindrical opening 42 of the crank arm 32 and is pulled back to rock the crank arm phragm to act as a stop therefor for preventing the diaphragm from entering said horizontal pas sage, plate means secured to the upper side of said diaphragm, upstanding lugs on said plate means, means for reciprocating said diaphragm comprising a crank arm, one end of said crank arm being connected to the upper portion of said upstanding lugs through lost motion connection means, means pivotally connecting the other end of said crank arm to the outer edge of said shell, a handle for rocking said crank arm, and a well formed in the upper portion of said rigid shell into which the handle for rocking the crank arm is adapted to be housed when in inoperative posi tion. 32 about its pivot pin 33. During the initial 2. In a pump of the type described, passage stroke of the crank arm 32, the cross bar 40 will means forming an elongated substantially hori slide somewhat in the horizontally extending lost 40 zontal passage having inlet and outlet openings motion slots 3| formed in the upper portion of at the opposite ends thereof, respectively, one lugs 30. Thereafter, the lugs 30, together with way valves operating in the same direction spaced the discs 21 and 25 will raise the ?exible dia along said passage, a chamber positioned above phragm 25. The vertical movement of the dia said passage, an opening in the upper portion of phragm is obtained through the free end of the said passage means forming a continuation of crank arm 32 and partakes of an arcuate course said horizontal passage into said chamber, said because of the lost motion slots 3|. As the dia chamber being formed of a rigid shell having up phragm is raised, the inlet valve is opened by per and lower portions, the lower portion of said bilge water or other ?uid under atmospheric pres shell contacting the upper portion of said pas 50 sure and the outlet valve remains closed. When sage means and being secured thereto, a ?exible the handle 43 is rocked in the opposite direction elastic diaphragm extending substantially hori to force the ?exible diaphragm 25 downwardly, zontally across said chamber and having its edges the diaphragm chamber is decreased in size and clamped between the upper and lower portions of the intake water surges against the upper surface the shell, a rigid reinforcing element disposed of the intake valve to drive the latter shut, simul 55 substantially centrally of said diaphragm, said taneously opening the outlet valve and, in turn, driving the bilge water or other fluid out through reinforcing element comprising a ring positioned on the lower side of the diaphragm, means posi the discharge pipe. ' tioned in said shell adjacent the upper portion of When the pump is not in operation, the handle horizontal passage adapted to contact the 43 may be removed from the cylindrical aperture 60 said underside of said ring to act as a stop for said 42 and is inserted within the cylindrical aper ?exible diaphragm to prevent said diaphragm ture 4|, the latter being so positioned relative to from entering said horizontal passage, plate the crank arm 32 as to lie within the well 35 and means secured on the upper side of the dia extend substantially parallel therewith. Thus, the handle 43 is substantially enclosed by the 65 phragm and overlying the ring and secured to the latter, upstanding lugs on the plate means, well 35, and lies ?at within the upper-shell 22 of the pump. As will be obvious from the foregoing descrip tion and an inspection of the drawings, the means for reciprocating said diaphragm com prising a crank arm, one end of said crank arm being connected to the upper portion of said lugs through lost motion connection present invention provides a simple compact 70 upstanding means, means pivotally connecting the other end pump, easily manufactured and formed of sheet of said crank arm to the outer edge of said shell. metal, wherein its operation and maintenance a handle for rocking said crank arm, and a well are exceedingly simple and the outer contour formed in the upper portion of said rigid shell and shape _ thereof attractive and pleasing in 75 into which the handle for rocking the crank arm appearance. 2,414,046 is adapted to be housed when in inoperative posi- positioned in said shell adjacent the upper por t1on, 3. In a pump of the type described, passage means forming an elongated substantially horizontal passage hav1n<y inlet and outlet openings 5 tion of said horizontal passage adapted to contact ?exible diaphragm to prevent said diaphiagm from entering said horizontal passage, plate at the opposite ends thereof respectively, oneway valves operating in the same direction spaced means secuieq on the upper side of the dia phragm and overlying the ring and secured to the underside of said ring to act as a stop for said along said passage, a chamber positioned above the latter, means for reciprocating said dia said passage, an opening in the upper portion of phragm comprising upstanding lugs on said plate said passage means forming a continuation of 10 means, lost motion slots disposed generally hori passage means and being secured thereto, a ?exi- 15 ing the other end of said crank arm to the outer tions of the shell a rigid reinforcing element dis- ing the Crank arm 15 adapted to be housed When posed substantially centrally of said diaphragm 20 in inoperative position. said reinforcing element comprising a ring posi- THOMAS LANGAN.