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Publication numberUS1091313 A
Publication typeGrant
Publication dateMar 24, 1914
Filing dateJun 18, 1912
Priority dateJun 18, 1912
Publication numberUS 1091313 A, US 1091313A, US-A-1091313, US1091313 A, US1091313A
InventorsCarl H Erickson
Original AssigneeCarl H Erickson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1091313 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)



Patented Mar.24,191

2 SHEETS-$11313 1 55 a qwgaw p25; 4 w MW,




APPLICATION FILED mm: 18, 19.12.


Patented Mar. 24, 1914.

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Specification of Letters Patent.

' Patented Mar. 24:, 1914:.

Application filed June 18, 1912. Serial No. 704,342.

To all whom it may concern Be it known that I, CARL H. ERIoKso-N, a subject of the King of Sweden, residing at Denver, in the county of Denver and State of Colorado, have invented new and useful Improvements in Air-Compressors, of which the following is a specification.

This invention is an improved automatically operated hydraulic air compressor adapted to be actuated by water from any water distributing system such as used in towns and cities and for the purpose of compressing air and storing the compressed air for use in garages to inflate the tires of antomobiles and also for other purposes, the object of the invention being to provide an improved air compressor of this class which may be readily attached to a water pipe, which is automatic in action and which re quires little or no attention, the invention consisting in the construction, combination and arrangement of devices hereinafter described and claimed.

In the accompanying drawing :Figure 1 is a vertical central sectional view of an air compressor constructed in accordance with my invention. Fig. 2 is a detail sectional view of the air inlet valve. Fig. 3 is a similar view of the check valve in the connection between the compressing tank and storage tank. Fig. 4: is a detail horizontal sectional view of the same on the plane indicated by the line aa of Fig. 3. Fig. 5 is a detail longitudinal sectional view of the water inlet valve. Fig. 6 is a vertical transverse sectional view of the same on the plane indicated by the line b.-b of Fig. 5. Fig. 7 is a detail sectional view of the valve operating float. Fig. 8 is a detail elevation, showing the inner ends of the lever and balancing lever and their connections. Fig. 9 is a detail plan of the same.

In accordance with my invention, I provide a compressing tank 1 and a compressed air storage tank 2. The storage tank is arranged above the compressing tank and is connected thereto by a pipe 3 in which is included the casing 4 of a check valve 5. The check valve is pivotally mounted at one side as at 6, is adapted to close downwardly and the casing 4: has a chamber 7 at its lower end and a duct 8 which'connect's the chamber 7 with the chamber 9 in which the check valve 5 is located. A cut off valve 10 is arranged to operate below the duct 8 and to close upwardly against a seat 11 at the lower end of the duct. The said valve is provided on 1ts upper side with guide pins 12 which operate 1n the duct and on its lower side is a float 13 which is arranged for vertical movement in the chamber 7. This valve is normally in lower open position and when in such position rests upon supports 14 which pro ect inwardly from the walls of the said chamber, near the upper end thereof.

An air inlet 15 is connected to the upper end of the compressing tank 1 as at 16, the connection 16 forming the casing for a downwardly opening valve 17. This check valve is pivotally mounted at one side as at 18 and is normally held in closed position against the seat 19 by the action of a spring the arm or duct 22 and to the said arm or duct 24 is connected the upper end of a pipe 25 which extends downwardly in the compressing tank 1 nearly to the bottom thereof. This casing 23 has a cylindrical, centrally disposed chamber 26 in which a balanced valve 27 is vertically movable. The said chamber 26 is open at its upper and lower sides and is provided at its upper and lower sides with stop flanges 2829, respectively, which serve to limit the vertical movement of said valve. Said balanced valve is hollow and is cylindrical in form and is provided at opposite sides near its upper end with openings 30. These openings when the balanced valve is in lowered position register with the ports formed by the inner ends of the ducts 222& and when the said valve is elevated with its upper end engaging the flange 28, the said openings 30 are out of registry with the inner ends of the said ducts and, hence, the valve serves to cut oii communication between said ducts and thereby cut ofi the supply of water to the tank 1 from the pipe 21. An arm 31 projects downwardly from the center of the bottom of the said valve and has a fork 32 at its lower end.

vA water outlet pipe 33 is connected to the bottom of the tank 1 as at 34c; The connection 34 forms the casing for a balanced valve 35 which is similar in construction to the valve 27. Said valve 35 has an upwardly extending arm 36 provided with a a link 39.

fork in which a lever 37 is pivotally mounted as at 38. The outer end of the said lever is connected to the bottom of the tank 1 by The inner, longer end or arm oft-he said lever is connected to the lower end of a valve operating rod 40 which is arranged vertically in the center of the tank 1 and has a stop 41 at its lower end and a stop 42 at its upper end. A float 43 of suit able construction is arranged in the tank 1 and is adapted to move vertically on the rod 40, the said rod passing through a central opening in the float.

A lever 44 has its outer end connected by a link 45 to the upper end of the tank 1. This lever engages the fork 32 of the stem of the valve 27 and the inner end of the said lever is connected by a link 46 to a balancing lever 47. The balancing lever is connected at a point a suitable distance from the outer end to the lower end of a link 48, the upper end of the said link being pivotally con nected to the top of the tank 1 and on the outer end or arm of the balancing lever is a balancing weight 49 which is adjustable lon gitudinally on the said lever and may be fixed at any point by means of a set screw 50. The lever 44 and balancing lever 47 are provided with o-ifsets 51 near their approaching end and to the said offsets are secured the vertically adjustable hooks 52 by means of screws 53 which operate in slots 54 with which the said hooks are provided, the hooks being connected together by a coiled retractile spring 55.

The upper end of the rod 40 passes through an opening in the link 46 and is secured to said link by a set screw 56. The stops 41-42 are vertically adjustable on the rod 40 and are held in place thereon at any desired adjustment by means of set screws 57. The spring 55 coacts with the link 46 to form a flexible connection between the inner ends of the valve operating lever 44 and balancing lever 47 and the said spring is put under tension when the valve operating levers are moved in either direction. Hence the said valves are positively caused to open and close, under the action of the operating mechanism. The tank 1 is provided with hand holes 57 near its upper and lower ends on opposite sides and with closures 58 for the said hand holes, the closures being held in place and rendered detachable by means of cross bars 59 and securing bolts 60. A service pipe 61 leads from the upper end of the compressed air storage tank 2, a branch pipe 62 leads from the lower end of the tank 1 and has a faucet or valve 63. A cut off valve 64 is provided for the water supply pipe 21.

The operation of my improved, automatic hydraulic operated air compressor is as follows :Should it be assumed that the valve 64 is open, that water is being supplied to the tank 1 and that the latter is nearly empty, the float 43 will be at the lower limit of its movement bearing on the stop 41 so as to cause the rod 40 through the instrumentality of the lever 37 to close the water outlet valve 35 and cause said rod, through the instrumentality of the lever 44 to open the water inlet valve 27 and hold the last mentioned valve open. As the column of water accumulates and rises in the tank 1, it compresses the air in the said tank, which has been supplied thereto through the valved air inlet pipe 15 and the compressed air is forced by the rise of the column of water from the tank 1 upwardly through the valved connection 3 into the compressed air storage tank 2. This action continues until the float 43 reaches the upper stop 42 of the rod 40 whereupon the said float coacts with the stop to move said rod upwardly, thereby causing said rod to actuate the lever 37 and open the water outlet valve 35 and to also actuate the lever 44 and close the water inlet valve 27. The said valves remain in such position, being held by the action of the lever 44 and the balancing lever 47, and, hence, the supply of water is cut oil. from the tank 1 and the water therein is discharged therefrom through the water outlet pipe 33. The check valve 5 prevents any back pressure from the tank 2. When the float 43 again reaches a point near the bot tom of the tank 1, it strikes a stop 41, thereby drawing the rod downwardly and causing said rod through the action of the levers 37-44 to close the water outlet valve 35 and reopen the water inlet valve 27. Hence, the operation of the apparatus is automatic and continuous and the same requires practically no attention. If, for any reason, the apparatus should fail to operate to cut off the supply of water to the tank 1, at any time, the float 13 will lift the valve 10 to cause said valve to close the duct 8 and, hence, prevent water from passing into the tank 2.

While I have herein shown and described a preferred form of my invention, I would have it understood that changes may be made in the form, proportion and arrangement of the several parts without de parting from the spirit of my invention and within the scope of the appended claim.

I claim An air compressing apparatus of the class described comprising a compressing tank having an air inlet and also having a water inlet and an outlet, respectively, located at its upper and lower ends, a. storage tank connected with the compressing tank, a controlling valve for the water inlet, a controlling valve for the water outlet, an operating lever for the last-named valve, an operating lever for the water inlet controlling valve, a balancing lever, a link connecting the balancing lever and a controlling lever of the Water inlet valve, an adjustable weight on the balancing lever and a vertically arranged rod having stops and having its lower end connected to the controlling valve lever of the Water outlet and its upper end connected to the said link, a float arranged to operate on said rod, and a tensioning spring arranged in line With and connecting the opposing portions of the operating 10 lever of the Water inlet valve and the said balancing lever.

In testimon whereof I affiX my signature in presence 0 tWo Witnesses.

CARL H. ERICKSON. Witnesses:


Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4265599 *Jan 31, 1979May 5, 1981Morton Paul HHydropneumatic energy system
US4380419 *Apr 15, 1981Apr 19, 1983Morton Paul HEnergy collection and storage system
US4643650 *Nov 25, 1985Feb 17, 1987Khakzad Ghomi Abdol HosseinFluid-raising apparatus driven by low hydraulic head
US5205720 *Jul 3, 1991Apr 27, 1993Tsugio NagataMethod and apparatus for producing compressed air and water pumping apparatus utilizing the produced air
U.S. Classification417/101
Cooperative ClassificationF04B39/0011