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Publication numberUS1072718 A
Publication typeGrant
Publication dateSep 9, 1913
Filing dateFeb 4, 1913
Priority dateFeb 4, 1913
Publication numberUS 1072718 A, US 1072718A, US-A-1072718, US1072718 A, US1072718A
InventorsRichard Heindl
Original AssigneeRichard Heindl
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Hydraulic-power transformer.
US 1072718 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



1,072,718. Patented Sept. @1913,


- UNITED sraa ns anion.


HYDRAULIC-POWER raaivsroiaivrnn.


To all whom it may concern Be it known that I, RIoHARD' HEINDL, a subject of the Emperor of Austria-Hungary,

residing at Vienna, in Austria-Hungary,

have invented a certain new and useful Improvement in Hydraulic- Power Transformers, of which the following is a specification.

The object of this invention is to provide improved apparatus whereby a source of hydraulic power furnishing water at a given pressure is utilized for producing a stream of water at a lower, pressure.

port being on the same side of the piston as the delivery port of the power cylinder, so that both pistons coact in expelling water through the delivery port of the power cylinder, the quantity of Water thus expelled exceeding the quantity of water whichenters the power cylinder for actuating the piston in said power cylinder. Accordingly, a given quantity of water at what may be i called the primary pressure, serves to propel. a larger quantity of water at a lower, secondary pressure. I

Two embodnnents of the 1nvent10n are illustrated in the accompanying drawing 1n Figuresl and 2 respectively, the figures being sectional elevations of the apparatus.

Referring in the first instance to Fig. 1,

the apparatus shown therein comprises two cylinders 1 and 2, with pistons 3 and 4 re spectively, 1 being the power cylinder and 2 the auxiliary cylinder. The two piston rods 5 andl6 are connected to each other'by a' double armed lever 7, the fulcrum 8 of which is adjustable in a guide 9 between the paths of the piston rods, so that the ratio of the two lever-arms engagino the rods can be varied. The lever is engaged with the rods by means of sleeves 10 and 11 pivoted to therods, the ends of the lever being slidable in the said sleeves. The cylinder 1 has two Specification of Letters Patent.

I Patentedsept. 1913.

Application filedi'February 4, 1913. Serial No. 746,122,

ports 12 and 13 on one side of the piston, and'two ports 14 and 15 on the other side of the piston. The port 12 serves for the lnlet of water under pressure, as for example from anaccumulator, and the port 13 serves for the discharge of spent water. The port 14 serves for the discharge of water at a pressure differing from the pressure of the water admitted at 12. The port 15 is an auxiliary inlet port and is connected by a pipe 18 to a port 16 of the cylinder 2, the latter having also a suction port 17 for the inlet ofwater. port and it will be seen that the two pistons move in opposite direction'stoward the delivery ports 14 and ltirespectively. The

The port 16 is a delivery ports 12, 13,14 and 17 are controlled, by I means of suitable valves.

"Admission of water I under pressure through the port 12 causes the piston 3 to recede from that port and expel water through the port14 to the consuming apparatus. At the same time the piston 4, moved by the lever 7, advances toward the ports 16 and 17, expelling water through port 16 and I pipe 18 to the cylinder 1, whence such waterflows through the port 14.

If the pressures of the water admitted at 12 and discharged at 14 are designated as p, and 22 respectively, the areas of the pistons 3 and 4 as F, and F respectively, the strokes of the pistons as s, and s and the quantity of water delivered as Q then (frictional losses and cross-section of piston-rods being neg-' lected) V If the fulcrum of the lever 7 is'midway between the paths of the two piston rods (as indicated in'Fig. 1, wherein Z indicatesthe distance between the paths and 4 the distances between the fulcrum and the paths) During the delivery stroke of the piston 8 as much water is expelled by the piston 4 as is expelled by the piston 3, the total quan tity being equal to twice the quantity of piston 4 is shorter than that of the piston water under pressure admitted to the cylinder 1 behind the piston 3, and the pressure of the water delivered at 14 is equal to half the pressure of the water admitted at 12.

The apparatus shown in Fig. 2 comprises a cylinder 1 similar to thecylinder 1 in Fig. 1, with ports 12 13 145, 15 piston 3 and piston rod 5 A pipe 18 connects the port 15 of the cylinder 1 to a port 16 of a cylinder '2 the latter having also a port 17 and containing a piston 4 which has a rod 6 A. lever '7 is engaged with the rods 5 and 6 by means of sleeves 1,0 and 11 pivoted to these rods. The fulcrum 8 of this lever is adjustable in a guide 9 outside the space between the paths of the two connecting rods. The action is in all respects similar to that of the apparatus shown in Fig. 1, except that the twopistons move in the same direction toward the delivery ports 1& and'16 and in all cases the stroke of the 3, for which reason the cylinder 2 is'preferably of larger diameter than the cylinder 1 as shown. V

The return stroke of the piston 3 or 3 after delivery, may be produced by mechanical means or by means of water introduced at a pressure adequate for the purpose. A double acting'power cylinder may of course be used, instead of a single acting power cylinder, and two or more single or double acting power cylinders may be combined to deliver to a conduit common to all.

That I claim as my invention and desire to secure by Letters Patent of the United States is V 'Hydr'aulic apparatus comprising a power cylinder, a piston in said cylinder, said cylinder having on one side of said piston an inlet port and on the otherside of said piston a delivery port and a second inlet-port; an auxiliary cylinder having an inlet port and a delivery port; a piston in said auxiliary cylinder; a conduit connecting the second inletport of the power cylinder to the delivery sport of the auxiliary cylinder; and a variable lever system operatively connecting the piston in-the power cylinder to the piston in the. auxiliary cylinder, wherea delivery stroke variable by adjustment of said lever system can be imparted to the last-mentioned piston simultaneously with the delivery stroke ofthe piston in the power cylinder." 7

In witness whereof I have signed this specification in the presence of two witnesses.


Hans PAPPE HEI Josnr VON K 'rsoHERc.

Copies of this patent may be obtained. for five cents eaeli, addressing the Commissioner of Patents,

Washington, D. G.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2682228 *Feb 15, 1949Jun 29, 1954Werkspoor NvLiquid fuel pump for internal-combustion engines
US2954737 *Apr 19, 1954Oct 4, 1960Liqua Mix IncAdjustable pump and liquid proportioning device
US3207378 *Aug 23, 1961Sep 21, 1965Pyles Ind IncMetering pump assembly
US3499387 *May 2, 1968Mar 10, 1970Richard ZippelPlastic injection machines
US3932065 *Nov 8, 1974Jan 13, 1976Coulter Electronics, Inc.Pneumatically controlled liquid transfer system
US4309152 *Sep 6, 1979Jan 5, 1982Sea Energy CorporationHydraulic motor/pump with variable mechanical advantage
U.S. Classification417/399
Cooperative ClassificationF04B9/127