US2353069A - Bilge pump operating means - Google Patents

Description

I F. PERKINS BILGE PUMP OPERATING MEANS July 4,1944

Filed Feb. 12, 1945 3 Sheets-Sheet l ZZZ y 1944 F. PERKINS I BILGE PUMP OPERATING MEANS 3 Sheets-Sheet 2 Filed Feb. 12, 1943 FIE-5.

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Refuse/c5 PERKINS ZTZWM Patented July 4, 1944 E'D STAT ES PA-T ENIT OFF I C E 2,35s,os9 I i I Y Y BILGE PUMP OPERATING MEANS v Fre'd'cri'cli Perkins,- Jamaica; N". Y.,.assignorto" PerkinsMarindLamp &' Hardware Corp 'New V York; N. Y a corporation of- New York Application Feb ruary l 2, 1943; S eriaI No: 471 621:

Claims.- (Cl. 103*205) This invention relates to" marine equipment, More particularly it pertains tomanually operatable reciprocating bilge-pumps.

Heretofore it has beenthe practice to provide pumps of this type with a stirrup handle which was directly'attached to the plunger rod. Such handle was adaptedto be operated bydirect liftingsmthat aperson manipulatingv the same in anopen boat such asa life boat, had to stand ovrthe pump, where he rocked the boat,-was in danger of fallingor' being washed overboard,- and' was so cramped that he could not work very longs -Aocor.dingly, it is the main object of the in-.

vention to provide amarine pump of'the charing my invention and permanently) mounted on acter described which can be-operated. easily by" a person who is sitting naturally on-a thwart near a gunwale.

An ancillary object of the invention is to providea-- pump-capable of beingooperated in the foregoingmanner because it has an operating.

oscillating shaft-which extends perpendicular to and. transects-the longitudinal axis of the pump barrel.-

A further object of the invention isto provide a pump of the character-described whichshall comprise relatively few and simple parts, be easy toassemble and ruggedin construction, and which 'shall operate with ahigh degree of efficiency.

Gther'objects of this inventionwill in'part be obvious and in parthereinafter pointed out.

The invention accordingl consists in-the features' ofconstruction; combinations of elements and arrangement of parts which'will be exemplifled in the-constructions hereinafter described, a-n'd' 'of"wlfich"t'he *scope'of application will be ind-ibated in'the appended claims.

Iii the-accompanying drawings, in which are shown various possihleeriibo'diment's' of this invention sndwmrnt 11kg numbers refer to like paritsthrcugiidut,

Fig? 1 is a fragmentary" transversesection" Fig. 8' is a sectional View taken substantially Referring now' to the drawing'sandr'nore particularly to Figs. 1 through 6, 10' denotes a manually operatable reciprocating bilge pump embodythe gunwale of a life boat l2. v

The pump includes a barrel l4 upon whose lower endthere is screwed a threaded intake fitting Hi. This fitting is provided, as is usual'in the art, with a hose coupling portion I8 and a threaded pipe couplin'g portion 205 In the mus: trated' embodiment; I have shown an intakep'ipe 22 connected tojthe fitting Ifi'b means of a pipe coupling 2l4. The pipe 22 extends through the floor grating 26 of the'li'fe' boat and terminates at a strainer 2'8'sulimergedin' the sump.

A discharge fitting 3D is screwed to the top end of the pump barrel 14f. This fitting may comprise a tapered reducing coupling whose inner surface is of'coni cal'shape and is adapted'to present a minimum friction head opposing water flow therethr'ough. The smallrend of the fitting 301 s tapped for connection to a suitable outlet conduit which in thisinstance comprises a nipple 3l to which a rubber hose 32 is attachedbya l'iose clamp C. y

A plunger 31 is slidingly received within the barrel I4? Said plunger is provided with a gravity check valve comprising a heavy disc 36 of" slightly less diameter than the internal diameter of the harrel M. The disc is groovedarou'nd its rim to form a $1017 33 in which there iS fitted packing 40" forming a," water t'ig'ht' sliding joint with the inner surface of the barrel. A plurality ofcircularly arranged apertures 42" communicate between the top and bottom surfaces of the disc 36'. The center of the disc is tapped to securely engage the lower threaded extension 44 of a center post 46 by means of which the plunger 3 1' is reciprocated.

A valve plate 48 faced on its under surface with a yielding, resilient material such as leather is centrally and slidably mounted on thepost 45, being of such dimensions that when allowed todescend it will close off' the top ends of the apertures 42; as shown in Fig. 4. The valve plate 48, however, is light enough, as is' well known in theart, to be easily lifted on the down stroke of the plunger '34' by water rushing through said apertures. Upward movement of the plate 48 is limited by a pin 52 which extends through the post 46. The plate 48 reciprocates in a cage formed by a plurality of tubular sleeves 54 erected around the circumference of the disc 35 and Another check valve is provided at the intake end of the barrel I4 which cooperates with the check valve in the plunger 34 to permit the pump to function as a lift pump. This second check valve is also of the gravity type and includes a sheet 68 having a frusto-conical downwardly ex.- tending and centrally disposed annular boss 82. Said boss acts as a valve seat and is supported by the conical walls of a central recess 64in the intake fitting IS. A hollow ball 68, having a diameter slightly less than the upper diameter of the boss, rests on the valve seat. The weight of the ball is such that the ball will be readily raised 01f the valve seat by water which flows into the barrel I4 when the plunger 34 is lifted. The ball is covered by a second disc 86 overlying the disc 68 and provided with a central raised and perforated retainer 68 which freely accommodates said ball. The periphery of at least the upper of the two discs 66, 88 is caught between the bottom of the barrel I4 and the intake fitting I6 whereby both said discs are firmly held in position.

It will be appreciated that when the plunger 34 is reciprocated in the pump barrel I 4, the plunger check valve and ball check valve will cause water to be drawn through the strainer 28 and dis-- charged from the spout 32 according to the well known principle of operation of a lift pump. If desired check valves of other types, for example. clapper valves or spring loaded valves, may be employed in the plunger and intake.

In accordance with my invention, I have provided for reciprocating the plunger 34 a means which is of novel construction and arrangement and which is adapted to permit easy operation of the pump when it is mounted in positions in which it heretofore has been considered difiicult and awkward to operate. An example of such mounting is on the gunwale of a boat where the pump is to be operated by a person sitting on a boat thwart. In general said novel means is so constructed that the pump operating handle can be substantially horizontally oscillated in a plane parallel to and spaced from the axis along which the plunger reciprocates and spaced from thesurface on which the pump is mounted. This is preferably accomplished by disposing the oscillating drive shaft perpendicular to and transecting the longitudinal axis of the pump barrel I4. To this end, said means may comprise an oscillatable operating shaft II! which is rotatably journalled in a stuffing box I2 connected by integral casting. bolting, brazing or welding to the outside of the barrel I4 near the outlet end. The stufling box may include a stuffing box cylinder 16 whose flange base I4 is arcuately fashioned to conform negatively to the external contour of the pump barrel, the connection to the barrel being made, if the cylinder is not cast integral with the barrel, around the flange. A gland I8 threadedly engages the stumng box cylinder and urges a 2518b 88 against packing 82 surrounding the shaft One end 84 of the operating shaft extends into' the pump barrel through an aperture in a wall thereof. This end is reduced in diameter to provide a shoulder 86 which rests on the outer surface of the pump barrel and prevents the shaft, when positioned properly, from axially shifting further into said barrel. A crank plate 88 is disposed on the inner shaft end 84, being held in this position by a set screw 89 which is threadedly received in a hub 98 on the crank plate and frictionally engages the operating shaft. A spacing collar 9I, interposed between the hub 98 and wall of the pump barrel, prevents the operating shaft I8 from shifting axially outwardly.

The crank plate 88 is connected to the center post 46 by a pitman 92 whose lower end is pivotally received on a pin 94 extending between the spaced arms 98 of a yoke integrally formed on the top of the center post 46. The upper end of the pitman is rotatably connected to the crank plate by a nut and bolt 98 which serves as a crank pin.

The protruding end I88 of the operating shaft 18, which extends exteriorly of the stuffing box I2, is squared for slidable but non-rotatable reception in the square aperture I82 of an operating lever handle I84. A set screw I86 is employed to lock the handle to the shaft. If desired, a hardwood grip I88 may be wedged to the shank II8 of the handle and maintained in this position by a ferrule II2. Preferably the handle is arranged to be vertically disposed when the plunger is in its lowermost position (Figs. 1 and 3), this being accomplished 'byloosening the set screw 89 and relatively rotating the shaft;

I8 and crank plate 88.

The pump I8 is mounted on the gunwale by a pair of brackets H4, H6, each of which includes a ring I I8 snugly but slidably encircling the pump barrel. One ring is adapted to be abutted against the bottom of the outlet fitting 38 and the other against the top of the intake fitting I6. The

rings each carry an integrally connected plate I28 I22 running which is screwed to stay strips around the gunwales.

In Fig. 8 I have shown a bilge pump 2I8 em-' bodying a modified form of my invention. The

cylinder 2m, plunger 234, intake fitting 21s and lower check valve (not shown) are all similar to' the barrel, plunger, intake fitting and lower check valve described with reference to Figs. 1 through 6. The novel means for reciprocating the plung-' er, however, is so arranged that no radial pressure is placed upon the packing 248 in the plung er disc 236. Said plunger 238 has screwed in its central tapped aperture a plunger rod 324 which is force-fitted into a downwardly extending'sock et 328 on a Scotch yoke 328. A guide rod 338 is force-fitted into an upwardly extending socket 332 on said yoke. Said guide rod is slidably received in the bore of a hub 334 centrally held above the pump barrel 2I4 by spider arms 33B extending radially inward from the outlet fitting 238. The yoke 328 is actuated by a nut and bolt 298 slidably received in the yoke crossway. 338 and attached to the crank plate 288. Said the above invention and as various changes might be made in the embodiments above set forth, it is understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim as new and desire to secure. by Letters Patent:

1. For use in a manually operatable reciprocating marine bilge pump comprising an elongated barrel of uniform diameter and a plunger reciprocatable Within said barrel: a bilge pump operating means for reciprocating said plunger, said means comprising a stufiing box mounted directly on a barrel wall and disposed wholly externally thereof, an oscillatable operating shaft rotatably supported in said stufiing box with its axis extending perpendicular to and transecting the longitudinal axis of said barrel, one end of said shaft extending exteriorly of said stufling box, an operating lever handle secured to said shaft end, the other end of said shaft extending freely interiorly of aid barrel, and means secured to said other end and connecting the latter and said plunger to transform rotary oscillatory movement to linear reciprocating movement, said motion transforming means including a crank pin and a Scotch yoke.

2. For use in a manually operatable reciprocating marine bilge pump comprising an elongated barrel of uniform diameter and a plunger reciprocatable within said barrel: a bilge pump operat-' ing means for reciprocating said plunger, said means comprising a stuffing box mounted directly on a barrel wall and disposed Wholly externally thereof, an oscillatable operating shaft rotatably supported in said stufiing box with its exis extending perpendicular to and transecting the longitudinal axis of said barrel, one end of said shaft extending exteriorly of said stufling box, an operating lever handle secured to said shaft end, the other end of said shaft extending freely interiorly of said barrel, a Scotch yoke connected to said plunger and mounted for linear reciprocation parallel to the longitudinal axis of said barrel, and a member oscillated by movement of said handle and slidable in the slot of said yoke, to linearly reciprocate the same, as said handle is oscillated.

3. For use in a manually operatable reciprocating marine bilge pump comprising an elongated barrel of uniform diameter and a plunger reciprocatable within said barrel: a bilge pump operating means for reciprocating said plunger, said means comprising a stufiing box mounted directly on a barrel wall and disposed wholly externally thereof, an oscillatable operating shaft rotatably supported in said stufiing box with its axis extending perpendicular to and transecting the longitudinal axis of said barrel, one end of said shaft extending exteriorly of said stuffing box, an operating lever handle secured to said shaft end, the other end of said shaft extending freely interiorly of said barrel, the end of said shaft inside the barrel being of a lesser diameter than the diameter of the shaft outside the barrel, and the aperture in the barrel wall through which said shaft end passes being of lesser diameter than the diameter of the shaft outside the barrel wall, and means secured to said other end and connecting the latter and said plunger to transform rotary oscillatory movement to linear reciprocating movement.

4. For use in a manually operatable reciprocating marine bilge pump comprising an elongated barrel of uniform diameter and a plunger reciprocatable within said barrel: a bilge pump operating means for reciprocating said plunger, said means comprising a stufiing box mounted directly on a barrel wall and disposed wholly externally thereof, an oscillatable operating shaft rotatably supported in said stuffing box with its axis extending perpendicular to and transecting the longitudinal axis of said barrel, one end of said shaft extending exteriorly of said stuffing box, an operating lever handle secured to said shaft end, the other end of said shaft extending freely interiorly of said barrel, the end of said shaft inside the barrel being of a lesser diameter than the diameter of the shaft outside the barrel, and the aperture in the barrel wall through which said shaft end passes being of lesser diameter than the diameter of the shaft outside the barrel wall, a member mounted on said shaft and abutting the inside of the barrel adjacent said shaft, and means secured to said other end and connecting the latter and said plunger to transform rotary oscillatory movement to linear reciprocating movement.

5. For use in a manually operatable reciprocating marine bilge pump comprising an elongated barrel of uniform diameter and a plunger reciprocatable within said barrel: a bilge pump operating means for reciprocating said plunger, said means comprising a stufiing box mounted directly on a barrel wall and disposed wholly externally thereof, an oscillatable operating shaft rotatably supported in said stuffing box with its axis extending perpendicular to and transecting the longitudinal axis of said barrel, one end of said shaft extending exteriorly of said stuffing box, an operating lever handle secured to said shaft end, the other end of said shaft extending freely interiorly of said barrel, means to prevent axial shifting of said shaft, and means secured to said other end and connecting the latter and said plunger to transform rotary oscillatory movement to linear reciprocating movement.

FREDERICK PERKINS.

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