Патент USA US2408766код для вставки
Oct.` 8, 1946._ v JfE. ERICKSON 2,408,765 ~ AIR COMPRESSOR Filed Jan. 29, 1944Y l 3 n.6v4n0 3 " s". ' - _ I INVENTOR. John .E_E'rzc/rson. BY Avro RNEYB 2,408,765 Patented Oct. 8, 1946 UNITED STATES PATENT OFFICE ' » 2,408,165 l AIR COMPRESSOR John E. Erickson, Phoenix, Ariz. Y Application January 29,1944, serial No. 520,281 2 Claims. 1 This invention relates to air compressors hav ing four o-r more useful applications. The object of the' invention is to provide an air compressor that can run slowly with very little leakage between its plunger and cylinder walls or through its valves, with the result that there is lower power loss. In the accompanying drawing and the figures <01. 28o-_18)v 2 the port '36 so it will have enough water to seal the valve 38. When the rubber hose Bûb is em ployed, a thumb screw 60d threaded in a holder 60e connected, through a swivel connection 60;“, with the outer end portion of the hose for selec tively adjusting the level thereof with reference to the water level in the gooseneck 52. 65 is a screen to keep out insects. Some drops of water will trickle down through valves 38, 32-32 and of reference _marked thereon which form a part 50 while air is passing up through them. This will of this speciñcation, I make use of a storage tank 10 drain condensed water from the compressed air lil provided with a pressure responsive switch in the tank I0 down through the valves into the -I2 electrically connected with a motor I4 for gooseneck and out to waste, through the opening starting and stopping the motor in accordance for the plug 60 which is left open at all times with predetermined low and high pressure con ditions, respectively,in the tank. A belt I5 oper atively connects the motor with a crank wheel except While starting. When the plunger moves up from the bottom of the cylinder it carries some water on its upper I8. A link 20 connects the crank wheel with a side, and it pulls some water up through opening piston rod 22 of a pump 24. The pump 24 com valve 50 until water level 62 drops to water level prises a cylinder 26 having a slidable plunger B4. Air will not go down through the water, but or piston 28 attached to the piston rod 22. Two 20 at 64 it will slide through on top of water and ports 30-30 are provided in the piston 28 for go up through open valve 5l). When the plunger the passage of air from the lower part of cylinder comes down the drops of water falling back down to the space above the piston. ~ The ports 30-30 through Valve 50 before it has time to close are under control of downwardly seating valves , will raise water level from> 64 to 62 again, but 32-32 hinged to the piston 28` The head 34 of no higher when valve 5D is closed, and no air will the cylinder 26 has a discharge port 36 under go down into the water when the level is up to the control of a downwardly seating valve 33 v62 again. which is housed in al chamber 4B communicating The amount of water moved back and forth with the storage tanklß through a pipe 42. A can be far less than the drawing shows by reduc Water level indicating window 44 is provided in ' ing the diameter of the gooseneck and gauging the chamber 4t. Located beneath the piston 28 the distance from water line 54 to 62 which may is a wall 45 attached to the cylinder 26 and pro be only some thousandths of aninch. ' vided with an intake port 48 under the control I claim: ~ of a downwardly seating hinged valve 55 on the 1. An apparatus of the character described wall 46. To the lower end of the cylinder is con comprising a U-shaped conduit, an upstanding nected one end of a gooseneck 52 having its other supply conduit connected to one end of said end connected with an upstanding pipe 54 hav U-shaped conduit and having a valve controlled ing its inlet end 56 controlled by a valve 58. inlet port,- an upstanding pump cylinder con In starting, the water or liquid to be used is poured in slowly into the pipe 54 vthrough the 40 nected to the other end of said U-shaped conduit and having an inlet in its bottom end wall, an Valve 58 while the pump is running. When water upwardly opening check valve controlling the appears in the window of gauge glass 44, the passage of fluid through the pump inlet, a piston pump is stopped, and the plug 60 isremoved to mounted to reciprocate in the cylinder having lower the water in the gooseneck to the level 62. a _plurality of ports therethrough, downwardly Further draining of the water through a port seating check valves mounted on the piston, crank 60a in the gooseneck will lower the water to the mechanism for actuating the piston, a chamber level 64 about one half inch below water level 62. on the top end wall of the cylinder communicat A rubber hose 60h connected to the gooseneck 52 ing with the latter through an outlet port, said by a coupling 60e is adapted to be held up or down chamber having a discharge port connecting to drain the water and only enough water is 50 with a receiver, and an outwardly opening check retained to supply a shallow amount of water on valve controlling the passage of iiuid through said valve 450 the level of the water on valve 50 being outlet port, said U-shaped conduit being adapted designated at 63. The plunger will pick up some to contain liquid to a level above the inlet port of that water so it will be sealed and when it of the pump and at a lower level in the supply Si Q1 reaches the top it will force some water through 3 2,408,765 end suitable to draw gaseous ñuid through the pump inlet and liquid seal the piston and the valve of the pump. 2. In a pumping system, the combination of ` a storage tank, a vertically disposed pump for pumping air to the tank, a goose neck liquid con tainer connected to the lower end of the pump through an inwardly opening valve, upwardly opening valves carried by the pump piston, a liquid indicating chamber in the passage between the pump and the storage tank and controlled by an upwardly opening valve, an inwardly swing ing valve controlling the ñuid inlet to the free end of the goose neck, and an adjustable pipe communicating with the lower end of the goose neck for varying the ñuid level therein. JOHN E. ERICKSON.