US671209A - Compressed-air pump. - Google Patents

Description

fairey Sterns RALPH W. ELLIOTT, OF OAKLEY, CALIFORNIA, ASSIGNOR OF ONE-HALF TO FRANK P. BAKER, OF SAME PLACE.

COMPRESSED-AIR PUNlP.

SPECIFICATION forming part of Letters Patent No. 671,209, dated April 2, 1901.

Application iled December 17. 1900l Serial No. 40,183. tNo model.)

To all whom t may concern.- upon the surface of the water will force the Be it known that I, RALPH W. ELLIOTT, a water upward through the pipe 3 and will concitizen of the United States, residing at Oak. tinue to do so so long as the compressed air ley, in the county of Contra Costa and State is admitted and the level of the water in said 5 of California, have invented certain new and cylinder is above the open lower end of said 55 useful Improvements in Compressed Air pipe 3. Pumps, of which the following is a speciica- 8 is an auxiliary pipe or conduit for utiltion. izing a portion of the compressed air in the My invention relates to improvements in' cylinder after the water has been forced out lo compressed-air pumps, theobjectofmyinven- .therefrom to shut off the further supply of 6o tion being to provide a device by means of 'compressed air and maintain it so shut olf which compressed air may be utilized to pump while the water is refilling the cylinder and water or other liquids and which will operate also to insure the escape of the compressed with as little friction as possible and require air from the cylinder. In said pipe 8 are two z5 no lubrication. valves 9 10, actuated by floats l1 12 at the 65 My invention therefore resides in the novel lower end of rods 13 14, attached at their up construction, combination, and arrangement per ends to levers 15 16, pivoted on brackets of parts for the above ends hereinafter fully 17 18, mounted on the valve-casings. The specied, and particularly pointed out in the float 11 rises and falls near the bottom of the zo claim. cylinder, being supported by the long rod 13, 7o

In the accompanying drawings, Figure 1 is sliding in the tube 19 within the cylinder and a side elevation of my improved pump, the in the guide 2O on the top of the cylinder, cylinder-casing being broken away to show while the float 12 rises and fallsnear the top the interior. Fig. 2 is a side elevation of the of the cylinder, being supported bythe short top of the pump from a different point ofview rod 14, sliding in the guide 21 on the top of -75 to that of Fig. 1. Fig. 3 is a plan view of the the cylinder. The lever 15 is a lever of the top of the cylinder, and Figs. 4, 5, and 6 are first order, while the lever 16 is a lever of the details of the valves. second order, and thus while the fall of the Referring to the drawings, 1 represents the iioat 11 opens the valve`9 the fall of the lioat 3o cylinder into which the water to be raised by 12 closes the valve 10. When now the level 8o means of the compressed air is first introof the water in the cylinderfalls below the duced, said water being admitted into said lioat 11 and said iioat falls, the yalve 9 is cylinder by means of a check-valve in the thereby opened and a portion of theV coinbottom of the cylinder, 3 representing the pressed air in the cylinder escapes along the pipe leading upward from a point near the pipe 8 through the valve 9. The valve 10 85 bottom of the cylinder, through which pipe was closed by the fall of the float 12, and thus the water is forced by the compressed air and the compressed air admitted into said pipe 8 delivered to a distant point. In the lower end linds no outlet therefrom, and when it enters of said pipe 3 is a check-valve 4, which holds a chamber 23, connected to said pipe 8 and 4o up the water which has already been forced having a flexible diaphragm 24,- it inflates 9o along said pipe 3 and prevents its return said diaphragm, thereby raising the head 25 when the compressed air is withdrawn from of the valve-stem 26 in a valve 27in the horithe cylinder to refill it with a fresh body of zontal member 6 of the compressed-air-supwater. ply pipe. When said valve-stem 26 is so The compressed air is conveyed to the cylraised, it cuts off the supply of compressed 95 inder by a pipe 5, connected by a horizontal air to the cylinder, but permits compressed member 6 with a vertical pipe 7, erected upon air to flow back from the cylinder through the top of the cylinder, through which pipe 7 small apertures 28 in the casing of said valve. it is admitted directly into the cylinder. The In passing into the chamber 23 the comf 5o pressure of the compressed air so admitted pressed air passes through a check-valve 29 roo in the pipe 8, which permits its forward movement, but prevents return movement. The compressed air is therefore completely trapped between the valve 29 and the valve 10 and maintains the valve 26 in its raised position, thereby insuring the escape of the compressed air through the apertures 28 until the level of the water rises to the float 12. As the compressed air escapes from the cylinder it is displaced by water admitted through the check-valve 2 and the level of the water begins to rise. A small rise in said level closes the valve 9, and when the water comes to the top of the cylinder it actuat-es the oat l2 to open the valve l0, thereby permitting the air which was confined between the two valves l and 29 to escape through the upturned end 3l of the pipe 8, so that the diaphragm 24 collapses and the valve-stem 26 drops, thereby reopening the cylinder l to the entrance of the compressed air through the pipes 5 6 7. The compressed air thus admitted now proceeds to do its work in elevating the water in the cylinder through the pipe 3 to a distant point, it being remarked that as soon as the level of the water has fallen a short distance the valve is again closed, in which position it is required to be for the next operation of inflating the diaphragm 24 to actuate the valve-,stem 26, and by reason of the Valve 9 having been closed and remaining so closed until the water falls to the bottom Vof the cylinder the compressed air cannot I claim- In a compressed-air pump, the combination of a liquid-receptacle, a check-valve for admitting liquid thereto, a pipe for conducting liquid from said vessel, said pipe opening near the bottom thereof, a compressed-air induction-pipe leading to said vessel and opening thereinto at the upper end thereof, an auxiliary compressed-air conduit supported on the top of, and wholly outside, the liquid-receptacle, said auxiliary conduit discharging directly into the surrounding medium outside the liquid-receptacle, a valve in said auxiliary conduit preventing such discharge, a iioat in the upper portion of the receptacle, connected through the top thereof with said valve to operate the same to release the compressed air, a valvein said auxiliarycond uit for admitting air thereinto from the liquid-receptacle, a ioat in the lower portion of the receptacle, connected through the top thereof with the latter valve to operate the same to admit said air thereinto, a valve in the inductionpipe for controlling the passage of the compressed air therealong, a chamber connected with the auxiliary conduit, and a flexible diaphragm forming a wall of said chamber and operating said valve, substantially as described.

In witness whereof I have hereunto set my hand in the presence of two subscribing witnesses. y

R. W. ELLIOTT. Witnesses:

FRANCIS M. WRIGHT, Z. A. DANIELs.

Images