US2295810A

US2295810A - Pump

Info

Publication number: US2295810A
Application number: US347221A
Authority: US
Inventors: Joseph F Sladky
Original assignee: Nash Kelvinator Corp
Current assignee: American Motors Corp
Priority date: 1940-07-24
Filing date: 1940-07-24
Publication date: 1942-09-15
Anticipated expiration: 1959-09-15

Description

Sept. 15, 1942.

PUMP

J. F. SLA'DKY Filed I July 24, 1940 ill/1 k ln.

INVENTOR. JUSEPH f. SLA 0/0 Patented Sept. 15, 1942 UNITED STATES PATENT oFFicE PUMP Joseph F. Sladky, Racine, Wis., assignor to Nash= Kelvinator Corporation, Kenosha, Wis., a corporation of Maryland Application July 24, 1940, Serial No. 347,221

11 Claims.

This invention relates to pumps and has particular reference to a water pump for an automobile, the body of which is made as a single casting.

It is an object of this invention to provide a pump body which may be made as a single casting.

It is another object of this invention to provide 'Will be apparent from a consideration of the following description and claims and the attached drawing of which there is one sheet and in which- Figure 1 represents a side elevation of an internal combustion engine with a pump mounted thereon;

Figure 2 represents a section View taken along a plane indicated by the line 2-2 in Figure 1 and looking in the direction of the arrows;

Figure 3 represents a sectional View taken along a plane indicated by the broken line 3-3 in Figure 2 and looking in the direction of the arrows;

Figure 4 represents a sectional view taken along a plane indicated by the line 4-4 in Figure 2 and looking in the direction of the arrows.

Illustrated in Figure 1 is an internal combustion engine I0 having a water pump generally indicated at I2 mounted thereon. The pump I2 is driven by a shaft I4 from the shaft I6 of a generator I8. A flexible coupling is provided between the two shafts. The generator shaft I6 is provided on the forward side thereof with a pulley 22 which is driven by a belt 24 passed around pulleys on the crank shaft 26 and fan shaft 28.

The pump I2 is conveniently made by casting and consists of a hollow disc-shaped body portion 30 with a discharge tube 32 opening tangentially therefrom. Cast down one side of the body portion 36 and passing thereunder is an intake tube 34. It will be noted that the lower part of the body portion 30 forms the inner wall of the intake tube 34 as is indicated at 36 in Figure 3. A drain hole 38 is provided in the lowest point of the body portion 36. A boss 46 is cast between the body portion 30 and the intake tube 34 so that the drain hole 38 may be drilled at an angle by a tool inserted through the end of the intake tube. I

The intake tube 34 opens into the body portion 30 through an opening 42 which is offset from the center of the disc-shaped body 30. Just opposite the opening 42, the intake tube 34 is provided with a boss 44 which is drilled and tapped at 46 in an open ng which is located co-axially with the opening 42.

Formed on the opposite side of the disc-shaped body 36 from the intake pipe 34 is a generally cylindrical boss 48. Boss 48 is provided with an aperture co-axial with the openings 42 and. 46 and in which is a shoulder forming portion 50 of small diameter and a portion 52 oflarger diameter, the end of which is threaded as at 54. A bearing 56 is positioned in the smaller portion 56 of the aperture while packing material 58 is compressed in the portion 52 of larger diameter by a packing nut 60 secured in the threaded portion 54. The top of the boss 48 is raised as at 62, and the raised portion is drilled and tapped as at 64 to accommodate a lubrication fitting by means of which lubricant may be forced through bearing 56.

Extending through the packing nut 6!), packing 58 and bearing 56 into the body portion 30 of the pump is the end of the pump shaft I4. The end of the shaft is slotted as at 68 (see Figure 4) so as to receive a single blade pump impeller I0 which extends equally on each side of the shaft I4. The impeller I6 is secured to the shaft I4 by a rivet I2.

Formed on the edge of the disc-shaped body member opposite the discharge tube 32 is a boss I4 which is drilled and tapped as at 16. It will be noted that the aperture 16 is aligned with the position of the rivet 12 so that a tool passed through the aperture 16 will engage the rivet. Attention is called to the fact that the discharge tube 32 is carried upwardly until the mouth 18 thereof is opposite the level of the shaft M. The neck portion 86 of the discharge tube 32 is also above the level of the shaft I4 so that the single blade impeller 16 may be inserted through the discharge tube 32 into the slot 68 in the shaft I4.

The end of the discharge tube 32 is provided with a flange 82, apertured at 84. The pump is secured to the side of the cylinder block ID by means of screws 86 passed through the apertures 84 (see Figure 2). The wall 88 of the block I0 is apertured so that the pump discharges into the water jacket; space 90 around the cylinder walls 92. The inside surface of wall 8.8 is provided with bosses 94 so that there is plenty of metal into which to tap the holes for the screws 86.

In assembling the pump it is contemplated that the impeller will be inserted through the discharge tube 32 as by means of a long narrow tool or pliers after which the slotted end of the shaft M will be pushed through the bearing 56 so that the slot slides over the impeller 10. With the impeller in place in the slot 68, the shaft will be rotated 90 and the rivet 12 inserted through the discharge tube 32 and fining an aperture providing support for a shaft supported in said journal, a discharge tube extending tangentially from said disc portion and having an opening into said disc portion of sufficient extent along the periphery of said disc portion to provide direct straight line access to the axis of said shaft aperture, and a boss formed on the opposite edge of said disc portion from said discharge tube defining an aperture arranged to provide straight line access to the axis of said shaft supporting aperture.

driven down by a punch inserted through the aperture 16. A suitable tool maybe inserted through the aperture 46 to hold the impeller 10 in plac while it is being rotated to insert the rivet 12. After the impeller is installed the packing material 58 and packing nut 60 may be installed, and the apertures 46 and 16 may be closed by plugs. The aperture 46 will also serve as a connection for the discharge end of a car heater.

It will be noted that the upward slope of the discharge tube 32 will impart a vertical velocity to the water discharged therethrough so that on entering the cooling jacket 90 of the engine Ill, the water will be directed upwardly along the cylinder walls 92 in a smoother fiow than would be obtained if the pump discharged directly against the cylinder wall. The upward flow of the water eliminates some of the turbulence around the discharge end of the pump giving a more rapid flow of water and therefore better cooling of the engine.

A pump is thus provided having a single piece body which will not leak. The working parts of the pump may be installed'largely through openings which must be provided in the body anyway to make the usual connections. The one opening 16, which is purely for assembly purposes, is easily and securely sealed by a screw plug. The pump requires fewer parts than a pump having a two part casing which must be bolted together.

While I have described my invention in. some detail, I intend this description to be an example only and not limiting on my invention to which I make the following claims:

1. A pump body formed as a unitary casting having a central portion of hollow disc-shape,

an intake tube cast along one side and under the bottom edge of said central portion, a discharge tube opening tangentially from said central portion, the side walls of said central portion defining co-axial apertures positioned above the center of the central portion, one of said apertures communicating between said hollow. central portion and said intake tube, the other of said apertures forming a shaft aperture eX- tending into said central portion, said discharge tube having an opening into said central portion and of sufficient extent along the periphcry of said body so as to provide direct access along a straight line from the mouth of said discharge tube to the axis of said shaft opening, a boss formed on said intake tube defining an aperture the axis of which is substantially aligned with the axes of the apertures in the side walls of said central portion, and a boss formed'on the edge of said central portion defining an aperture having an axis which passes through said dis charge tube and the axis of said shaft opening.

2. A pump body formed as a unitary casting having a hollow disc-shaped portion, a boss formed on one face of said disc portion and de- 3. A pump having a hollow disc-shaped body portion formed as a unitary casting, an intake passage integral with said body portion and formed along one side and the lower edge of said disc-shaped portion, a discharge tube extending from the side edge of said disc-shaped portion, the walls of said disc-shaped portion defining apertures, one of which is positioned along a straight line passed through said discharge tube, others of which are positioned along a line passed through the side walls of said disc-shaped portion and intersecting said first line, and a third aperture which is positioned along a line passed through the end of said intake tube, and a pump shaft extending through one of said apertures along said second line.

4. A pump formed as a-unitary casting having a hollow disc-shaped body portion, an intake portion formed radially along one face and under the bottom of said body portion, a discharge tube extending from the edge of said body portion, the edge of said body portion opposite said discharge tube defining an aperture, the faces of said body portion defining co-axial apertures along a line intersecting another line passed through said discharge tube and the first mentioned aperture in the edge of said body portion at a point within said body portion and eccentrically of the axis thereof, and means formed on said casting arranged to support said pump.

5. A pump formed as a unitary casting having a disc-shaped body portion, the walls of which define a pair of apertures positioned longitudinally of said body portion and a second pair of apertures positioned transversely of said body portion, lines passed through each of said pairs of apertures intersecting at a point offset from the center of said body portion, one of said aper tures of said first pair of apertures forming a journal for supporting a shaft.

6. A pump body formed as a unitary casting having a disc-shaped portion, the walls of which define a pair of apertures positioned longitudinally of said disc portion and a second pair of apertures positioned transversely of said disc portion, lines passed through each of said pair of apertures intersecting within said disc portion at a point offset radially from the center of said disc portion, a discharge tube formed around the line passed through said transversely disposed apertures, and an intake tube formed along a wall and lower edge of said disc portion, said intake tube defining a tapped aperture co-axial with said longitudinally positioned apertures.

7. A pump formed as a unitary casting having a disc-shaped body portion, an intake tube formed downwardly along one face of said body portion and under the bottom edge of said body portion, the wall of said body portion forming the inside of said intaketube, the faces of said body portion defining substantially co-axial apertures, one of said apertures opening between said body portion and said intake tube, and a discharge tube extending from the edge of said body portion, said discharge tube opening into said body portion and being so arranged that access may be had through said discharge tube along a straight line to the axis of said first mentioned aperture, the edge of said body portion opposite said discharge tube defining another aperture through which access may be had along a straight line to the axis of said first mentioned apertures.

8. A pump having an integrally cast hollow disc-shaped body portion, an intake tube formed integral with said body portion along one face of said disc-shaped portion and under the bottom edge thereof, a shaft extending through the opposite face of said disc portion, a discharge tube integral with said body portion extending along one side and edge of said disc portion, said body defining an aperture opposite said discharge tube, and an impeller plate fixed in situ to the end of said shaft within said disc portion.

9. A pump body formed as a unitary casting having a hollow disc-shaped portion, a discharge tube extending from the edge of said disc portion, the edge of said disc portion opposite said discharge tube defining an aperture, the faces of said disc portion defining co-axial apertures along a line intersecting another line passed through said discharge tube and the first mentioned aperture in the edge of said disc portion, a flange formed around said discharge tube and arranged to support said pump, an intake passage cast along the outside of said disc and covering one of said first mentioned apertures, and a portion of the outer wall of said intake passage defining an aperture co-axial with said last mentioned apertures.

10. A pump body formed as a unitary casting having a central portion of hollow disc-shape, an intake tube east along one side and a portion of the edge of said central portion, a discharge tube opening tangentially from said central portion, the side Walls of said central portion defining co-axial apertures positioned eccentrically of said central portion, one of said apertures communicating between said hollow central portion and said intake tube, the other of said apertures forming a shaft aperture extending into said central portion, said discharge tube having an opening into said central portion and of surficient extent along the periphery of said central portion so as to provide direct access along a straight line from the mouth of said discharge tube to the axis of said shaft opening, the wall of said intake tube defining an aperture the axis of which is substantially aligned with the axis of said apertures in the side walls of said central portion, and a portion of the edge of said central portion defining another aperture having an axis which passes through said discharge tube and the axis of said shaft aperture.

11. A pump formed as a unitary casting having a hollow disc-shaped body portion, an intake portion formed radially along one face and across an edge of said body portion, a discharge tube extending from the edge of said body portion, the edge of said body portion opposite said discharge tube defining an aperture, the faces of said body portion defining co-axial apertures along a line intersecting another line passed through said discharge tube and said first mentioned aperture in the edge of said body portion at a point within said body portion and eccentrically of the axis thereof, and means formed on said casting arranged to support said JOSEPH F. SLADKY.

' CERTIFICATE OF CORRECTION. Patent No. 2,293,810. September 15,- 19L .2

JOSEPH F. SLADKY.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, second column, line 2, claim 2, strike out the words "supported in said journal;

and that the said Letters Patent should-beread with this correction their-e in that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 16th day of February, A. D. 1914.5.

Henry Van Arsdale, (Seal) Acting Commissioner of Patents