US2340020A - Pump - Google Patents

Description

INVENTORS,

C. ROOSE ET AL.

. PUMP Jan. 25, 1944.

Filed May 15. 1942 Patented Jan. 25, 1944 PUMP Cyriel Roose and Thomas E. Jackson, Detroit, Mich., assignors to Sherman, Jackson & Roose Company, Detroit, Mich., a corporation oi" Michigan Application May 15, 1942, Serial No. 443,038

(Cl. S-178) 2k Claims.

This invention relates to pumps and has particular reference to an inexpensive and simple type of hand operated pump which is particularly adapted for pumping water or other liquids.

A principal object of the invention is to pro-v vide a hand operated pump in which many of the parts thereof are made of a non-metallic material such, for example, as wood.

Another object of the invention is Vto provide an inexpensive type cf hand operated pump which is particularly adapted for use in connection with abucket or pail of water forpumping such water through a nozzle under suihcient pressure to throw a fairly continuous stream of water in the neighborhood of at least twenty feet to twentyiive feet.

Another object of the invention is to provide aninexpensi-ve and simple type of pump Which is adapted for use as home refighting equipment or for use in pumping or spraying liquids such as insecticides and which pump is constructed and arranged,A during operation thereof, to discharge a continuous stream of liquid. x

Another object of the invention is to provide a pump in which the cylinder thereof is formed by a block ofrnon-metallic material, such. as wood, which is impregnated with oil or other suitable material so as to resist deterioration by the liquids handled ,by the pump.

Other objects and advantages of the invention will. be apparent from the consideration of the Y following specicationy taken in conjunction with the accompanying drawing of which there is one sheet and` wherein:

VFig. 1 is a sectional view of a bucket having a pump employing the invention arranged thereinl and adapted for pumping liquid from the bucket through a conduit or pipe which is connected to the discharge of the pump;`

Iig. 2. is an enlarged elevational View of the. pump embodying the invention, parts, thereof being; broken away and others shownin section for illustrating details of the construction of the Pump? and.

, Fig. 3 is,` a horizontal sectional view taken in. ai plane along the line 3 3 ofv Eig'. 2. looking in thev direction. of. the arrows.

' pump embodying the inventionY is particularV comprises a bucket Hl having a handle E2 and a pump indicated generally at id secured within the bucket Eil Kby means such as a pair of strapsv I6 encircling the body oi the pump and suitably f fastened te the side of the bucket to. The

bucket lil may be provided with foot rests I8 for holding the bucket in position during such time as the pump is operated. The pump lli is adapted to pump liquids from the interior of the bucket l0 and to discharge such liquid through a pipe indicated generally at 2li which is connected to the discharge outlet 22 of the pump.

As illustrated more particulariy in Fig'. 2, the' pump comprises a body member 2t, a handle 26, a piston 28, an inlet 30 and the discharge or outlet 22. The body member 24 as' illustrated comprises a block of non-metallic material, such as' wood, which is formed internally therein to p'ro- Vide a cylinder bore E2. The .bore 3,2 'may be" formed by drilling a cylindrical hole through the body member 2t. Cypress wood impregnatedV with oil may be employed for making the Ibody member 2li. The cylinder bore 32 is closed at its' lower end by a disc-like body 31E which is formed with an opening therein, such opening providing* the inlet Si! to the pump cylinder. The body 34. may be formed to include a projection' 35 which, seats within the end of the cylinder 32 for locating the member 34 with respect to the body mem'-y ber 24 and such projection 3S is formed to provide a seat 33 for a valve member dil', the seat 38': and valve `men-ibex fle comprising an inlet 'valveI for the pump. The valve member it may com-4 prise a spherical ball of any suitable material and? is adapted to rest upon the seat 38 for the purpose, of closing the inlet 36 to the pump cylinder or Ibore 32. Means, such as a pair of nails Il? carried by the body member 2d a short distance above the valve seat 38, are provided to form a stop for limiting the upward travel of the valve member 40', the upper position of which is indicated in.'A dotted lines.

The piston-28 of the pump', as illustrated, coniprises a hollow tubular member @il having an' out-:f side diameter materially less than that of the inside diameter of the cylinder bore' ,32. The p'ston includes a head comprising a member @it pros vided with an annular flange t8 which is threadiedly or otherwise suitably secured to one end of the tubular member fill and clamps an annular' gasket 5! against a washer 52 which is held'` against the end oi the tubular member lid. A- (ValVe member comprising a spherical ball i's g arranged within the tubular member M and is adapted to cooperate with spaced valve seats and 60. The valve seat 58 may be provided by the upper circular inside edge of the member 46 while the other valve seat may be provided by an annular ridge formed in the wall of the tubular member 44. The tubular member at its upper end is suitably connected to the handle 26 in order that the piston may be manually or otherwise reciprocated in the cylinder bore 32. The upper end of the cylinder bore is closed by a disc member 62 which is provided with an opening for the tubular member 44. A washer 66 may be arranged on a seat at the upper end of the cylinder bore and provide an upper bearing or guide for the tubular member 44 and suitable packing may be provided between the washer 66 and the disc member 62. The disc member 62 may be secured to the body member 24 by means of one or more screws 68. A sleeve-like member 'l0 disposed around the tubular member 44 at the upper end thereof and adjacent to the handle 26 is adapted to contact the outside surface of the disc member 62 for limiting the downward movement of the piston. The discharge from the pump comprises a nipple secured in a laterally extending opening formed in the side wall of the body member,the inner end of the nipple communicating with the upper end of the cylinder bore 32. Between the upper and lower positions of the valve member 56 the tubular member is provided with a plurality of openings 12, which together with the valve member 56 and valve seat 58 forms a by-pass for transferring liquid in the cylinder from the inlet side of the cylinder to the discharge side thereof.

The pump may be supported by a plurality of legs 16 which together with the disc 34 are secured to the body member 24 by means of one or more screws such as 8U, and a screen 18 may b e wrapped around the legs 16 so as to provide a lter for screening the liquid drawn into the pump from the bucket I0.

Upon upward movement of the piston 28 the valve 56 will seat and the valve 40 will unseat thereby drawing fluid into the pump cylinder below the piston head and 'through the inlet opening 35. When the head reaches the upward limit of its travel in the cylinder 32 just below the discharge 22, a stop carried by the rod 44 will engage the washer 65 at the upper end` of the cylinder and as the iniiow of liquid to the pump cylinder ceases the valve 40 will seat on its seat `38 and close the inlet opening, thereby preventing the escape of fluid from the cylinder 32 therethrough. When the piston is at the'upper limit of its travel, as previously indicated, the cylinder 32 will be full of liquid assuming that there was a sufficient supply in the bucket l5. Downward movement of the piston will open the by-pass therethrough by unseating the valve 56 from its seat 58 and under the influence of the liquid passing through the member 46, the valve member 56 will seat on its upper seat 66 while liquid in the cylinder bore 32 Will ow through the by-pass in the piston including the openings 12 and be transferred tc the discharge side of the piston,

The mass of the piston head and the rod 44 is such that upon movement of the piston from its upper limit of travel to its lower limit of travel, approximately half of the iluid in the cylinder will be forced out through the outlet 22 and hose 20. When the piston reaches the lower limit of its travel, the space in the cylinder 32 on the discharge side of the piston will be occupied by liquid which will be discharged through the outlet 22 on the next upward stroke of the piston.

the valve 56 during such upward stroke seat on its seat 58 as previously indicated.

The interior of the tube 44 during the upward stroke of the piston is open through the opening 12 to the cylinder, and while the interior of this tube might be permanently closed at 60 if desired, it is here shown as being open except at the top thereof where it is closed by a plug to which the handle 26 is secured. The space in the tube 44 above the valve seat 60 will function as an air bell or expansion chamber if it is filled with air. It might, of course, have the air removed therefrom if the pump is filled with a liquid in an inverted position.

From the foregoing it will be evident that the pump is constructed and arranged to discharge liquid on both the up and down strokes of the piston. The provision of a suitable nozzle on the end of the hose 20 will enable the liquid discharged from the pump to be forced in a stream or sprayed, and the continuous operation of the piston will discharge a continuous stream of;Y liquid through the hose 20. A pump of this type in view of its simplicity and economy in manu- .V facture is particularly adapted for use as a piece of home re ghting equipment for use in dealing with incendiary bombs, etc., and in addition may be used as a garden spray for dispersing water,= insecticides, etc. When the bucket is full of water the pump is ready for instant use, and as the; bucket may be refilled during operation of the pump, no interruption in the discharge of water through the hose 20 is necessary during such time: as the pump and its assembly with the bucket might be used in fighting fires. 'I

While the invention has been described Withsome detail, it is to be understood thatl the description is for the purpose Vof illustration only and is not definitive of the limits of the inventive; idea. The right is reserved to make such changes' in the details of construction and arrangement; of parts as will fall within the purview of the at tached claims. l

We claim:

1. A portable liquid pump comprising a cylinderI having a valve controlled inlet at one end thereof; and a discharge outlet at the other end thereof,' a piston reciprocable in said cylinder and com-f prising a head, a rod connected to said head for reciprocating the same in said cylinder and projecting from the discharge end of said cylinderj'" said head upon movement thereof away from said" valve controlled inlet operating to draw liquid' into said cylinder on the intake side thereof and to discharge liquid from said cylinder on the discharge side thereof, said rod comprising a hollow? tubular member and said head comprising anV annular member secured to the end of said tubu-l lar member and projecting therein so as to define a valve seat therein, said tubular member having an opening in the Wall thereof spaced from said valve seat and a ball valve member in said' tubular member and cooperable with said valve seat, said valve seat and member comprising ai valve controlled opening in said head which opens upon-movement of said head toward said cylinder i inlet so as to permit liquid in said cylinder to bypass said piston head, said tubular member being formed to provide a valve seat above said open` ing, said ball valve member being adapted to seat. on said last-mentioned valve seat during down-- ward movement of said piston head so as to.pre vent the entrance of liquid into said hollow mem-f ber above said last-mentioned valve seat, said, rod and head having such mass that during mover-Q ment thereof in the cylinder toward the inlet thereof liquid Will be displaced from the cylinder through the outlet thereof.

2. A liquid pump comprising a cylinder having a valve controlled inlet at one end thereof and a discharge outlet at the other end thereof, a piston reciprocable in said cylinder and comprising a head, a rod connected to said head for reciprocating the same in said cylinder and projecting lfrom the discharge end of said cylinder, said head upon movement thereof away from said valve controlled inlet operating to draw liquid into said cylinder on the intake side thereof and to discharge liquid from said cylinder on the discharge lar member having an opening in the wall thereof spaced from said valve seat and a valve member in said tubular member and cooperable with said valve seat, said valve seat and member comprising a valve controlled'opening in said head which opens upon movement of said head toward said cylinder inlet so as to permit liquid in said cylinder to by-pass said piston head, said tubular member being provided with a second valve seat upon which said valve member seats upon movement of said head towardsfthe inlet of said cylinder, said rod and head having such mass that Iduring movement thereof in the cylinder toward the inlet thereof liquid will be forced from the side thereof, said rod comprising a hollow tubular 15 cylinder through the outlet thereof.

member and said head comprising an annular member secured to the end of said tubular member and defining a valve seat therein, said tubu- CYRIEL ROOSE. THOMAS E. JACKSON.

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