US1744550A - Pump and storage tank - Google Patents

Description

Jan. 21, 1930. v x T, -f5 1,744,550

PUMP AND STORAGE TANK Filed Oct. 6. 1926 2 Sheets-Sheet 1 QU 0x Jan. 21, 1930. .1. T. JANETTE- PUMP AND STORAGE TANK Filed oct. 6. 1926 2 Sheets-Sheet 2 raw/r Patented-Jan. 21 1930 JOHN T. JANETTE, or CHICAGO, rumors rum? AND STORAGE TANK Application filed October 6, 1926; Serial No. 139,932.

This invention relates to pumpswhich are adapted for pumping various fluids or liquids, but which are intended particularly for pumping liquid fuel, oil, or the like; and also relates to the combination of such a pump with a storage tank and controlling means whereby the pump will be automatically regulated and there will be practicallyno daniiger of gas or i'umes escaping from the ta My improved apparatus has been devised and constructed with special reference to itsuse in connection with oil burning apparatus. In order to supply oil for such apparatus, it is more or less common to provide an outdoor storage tank; and to pump theoil or fuel from such tank toa supply tank located within the building and adjacent to theburner, the oil being fed by gravity or. otherwise from the supply tank to the burner. I

The objects ofthis invention are to provide an improved, pumpingapparatus; to

provide a pumping apparatus for liquid fuel which will be-economical to manufacture and which will be particularly efiicient and durable in operation; to provide a pump having an inner chamber or crank casev into which'the' liquid is discharged, whereby the operating partswill be running in the oil or liquid; toprovide a supply tank having a pump mounted therein which; is provided with a crank case into: whichvthe liquid is pumped and from-which it overflowsinto the tank; to provide amotor driven pump with a sealed floaticontrol for the motor; to provide a high speed piston pump which may be driven directly from'the motor; and to provide such other advantages and novel features as will bedescribed hereinafter.

ing a preferred form of this invention;

Figure l isa vertical sectional View with partsbroken awayto show. the inner construction; J .7

Figure 2 is a horizontal sectional view takenonthe line 2--2 of Figure .1;

Figure 3 is a sectional view taken on the line 3-3 of*Figure2;

Figure i isa sectionalfview taken on the 51ine44oFigure2;-andh a shaft 11 projecting downwardly through a spectively with pistons 24 and 25 which are In the accompanying drawings illustrat-T Figure 5.. is an end view or detail of the cylinder head or plug.

The supply tank 6 which may be of any desiredsize and of any suitable material is provided with a substantial cover 7 which is secured thereto by means of bolts 8 and which is provided with a gasket 9 in order 'to make an air tight joint. The motor 10 is mounted directly on the cover with its hole in the cover.

The pump 12 is of the double opposed cylinder type and has a casing 13 which is secured V to the cover 7 in any suitable manner, as by means of bolts 141. The casing comprises a lower chamber or receptacle 15, which is con-' nected by means of posts or segments 16 with a top plate 17. The chamber 15 is closed at the'bottom by a disk or bottom plate 18, but is open at the top so thatliquid dischargedtherein may overflow into the tank 6. The cylinders 19 and 20 are arranged on opposite sides of the casing and are preferably formed integrally therewith. The outer ends of the cylinders are threaded to receive plugs or heads 21 which have inwardly extending projections 22'which are of slightly less diameter than the cylinder and which are provided on their inner ends with one or more grooves 23. These projections vextend so into points approximately opposite the outlet portsand with the grooves therein tend to I prevent noise when the pump is in operation.

The cylinders 19 and 20 are provided redriven by crank rods or eccentric rods 26 and27. The motor shaft 11 is provided with eccentrics28 and .29 which-are fixed thereto and which engage with the respective eccentric rods 26 and 27. w

The 'fuel or liquid passes from the storage tank or other source of supply (not shown) through a pipe 30 and strainer 31 to the pump intake pipe 32. This pipe is connected by branches 33 and 34 witlithe intake orifices of the cylinders 19 and 20. The cylinders are provided with intake valves 35 and outlet valves 36, as shown particularly in Figures 7 3 and 4. The outlet orificesor passageways 37 10c pivoted at 43 in a bracket 44 on the pipe 40.-

The opposite end of the lever 42 is engaged by a float rod or stem 45 to which is secured a float 46. The stem is guided by passing up through a hole 47 in the bottom of the crank case.

The tank 6 has an outlet 48 and is also preferably provided with an overflow pipe 49 which leads back to the storage tank.

When the motor is in operation, the liquid will be drawn in through the inlet pipes to the cylinders in the well known manner,-it

being understood that, as the pistons are drawn inwardly, they tend to create a vacuum in the cylinders which is broken at the time they pass the inlet ports so that the liquid is quickly drawn into the cylinders. With this arrangement it is possible to operate the pump without inlet valves, but I have found it advisable to use them to insure proper operation of one pump in the event that the other pump fails to operate on account of failure of its exhaust valve to seat properly, as when held open by dirt or the like. On the discharge stroke of the pistons, the fluid will be forced aroundthe projections 22 and out through the outlet orifices or exhaust ports 37 and during this discharge movement,- I

have found that the grooves 23 assist in pre-' venting noise or pounding during the discharge. The liquid or fuel is pumped directly into the chamber 15 which extends upwardly at some distance beyond the cylinders so that this chamber is always full of oil or fuel and consequently the pistons and driving connections are submerged or operate in' oil so that they are at all times independently lubricated and are also cooled by the flow of oil throu h the chamber. On account of the balance arrangement of the cylinders and the operating of the parts under oil in this manner, I am enabled to drive the pump at an exceedingly high speed andpractically without noise or vibration. As illustrating such speed, it maybe noted that these pumps are now being operated with motors running at seven hundred and fifty revolutions per minute. v

The switch and connections are arranged so that when the oil reaches a predetermine upperlevel in the'tank 6, the float will be raised and will open the switch to stop the motor. When the float has moved down to the lower level, the switch will again be closed d from the casing into the tank.-

to start the motor, and if desired, the switch may be so arranged that a further drop of the floatwill again open the switch to stop the motor as in the case of undue discharge from the supply tank. The parts however are arranged so that the lower end of the pipe 40 will be submerged in liquid so that the pipe is sealed and no vapors or gases from the tank 6 may escape through the opening necessary for the switch operating rod. This is a particularly important feature, as when liquid fuel of certain gradesis being pumped, some air is usuallydrawn in theretlirough and vapors or gasesformed, which is apt to be of an explosive character, so that if they are permitted to escape around the switch, or motor, there will be a possibility of their becoming ignited by sparks or arcs.

From this description it will be seen that I provide a simple and compact pumping apparatus together with a storage tank, all of which may be readily mounted on legs or other supports and which will occupy but little room. Furthermore, on account of the direct drive and few parts, the pump is particularly eflicient and is not likely to get out of order. As some of the structural features may be modified or the details of construction may be changed in order to adapt the pump for different conditions or uses, I do not wish to be limited to the particularform or arrangement herein shown and described, except as specified in the following claims, in which I claim: v

1. A pumping ap aratus comprising a tank, a casing mounted ing 0 positely disposed integrally formed cylin ers, pistons for said cylinders, a motor having its shaft projecting into the casing, eccentrics on said shaft, eccentric rods from the eccentrics to the pistons, inlet pipes from a source of su ply to the cylinders, discharge passageways om the cylinders to the casing, said casing being adapted to hold a predetermined .amount of liquid and discharging over the top into the tank.

2. In an apparatus of the character set forth, thecombination of a supply tank having a cover, a pump casing secured to the cover and projecting downwardly intothe tank, a motor mounted on the tank with its;

shaft projecting downwardly into the casing, oppositely disposed'cylind'ers on said casing,

istons for said cylinders, means for mg the pistons from the shaft, inlet connections for said cylinders,'and outlets from the cylinders to the. casing, the lower ortion of the casing being adapted to hol a predetermined amount of li uid as it is pumped therein, the balance of t e liquid overflowing 3. The combination with having a cover, of a pump casing the inside offthe cover and ha a crank chamber which is closed at the bottom and in said tank and havdrivsupply tank secured to ias open. at the'top, cylinders projecting outleading to the crank chamber, the arrange.

ment being such that the liquid will be pum ed into the crank chamber and will over ow into the tank, the pistons and driving parts being submerged in said liquid.

4. In an ap aratus of the character set forth, the combination of a supply tank having a tightly fitting cover, a motormounted on said cover with its shaft projecting downwardly into the tank, a double pump having opposed cylinders, driven by said shaft. a strainer, a pipe leading from a source of supply to said strainer, passageways from the strainer to the cylinders, a switch mounted on the cover for controlling the motor, a pipe projecting downwardly from the cover to a point below the level of the liquid, a switch rod from the switch which passes freely through the pipe, a lever having one end connected with said rod, a float connected with'the other end of the lever, and a discharge pipe from said tank.

JOHN T. JANETTE.

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