US745298A - Compressor for air or other aeriform bodies. - Google Patents

Description

'No. 745,298. i I PATENTED NOV. 24, I903.

H. O. SERGEANT & W. RAYMOND.

COMPRESSOR FOR AIR OR OTHER AERIFORM BODIES. rr LroA'non FILED JAN. zajmoa.

10 MODEL.

No. 745,298. Patented November 24, 1903.

UNITED STATES PATENT OFFICE.

HENRY OQSERGEAN'I, OE \VESTFIELD, NEW JERSEY, AND l/VARD RAYMOND, OF EASTON, PENNSYLVANIA, ASSIGNORS TO THE INGERSOLL-SERGEANT DRILL COMPANY, OF NEW YORK, N. Y., A CORPORATION OF WEST VIRGINIA.

COMPRESSOR FOR AIR OR OTHER AERIFORM BODIES.

SPECIFICATION forming part of Letters Patent No. 745,298, dated November 24, 1903.

1 Application filed January 23, 1903. Serial No, 140,206. (No model.)

To all whom it may concern: ton 9 for the low-pressure cylinder, and a Be it known that we, HENRY O. SERGEANT, piston 10 for the high-pressure cylinder.

arosidentof Westlield, in the county of Union A common head 11 is provided for the adand State of New Jersey,and WARD RAYMOND, jacent ends of the intermediate-pressure cyl- 5 a resident of Easton, in the county of Northinder3 and low-pressure cylinder 4, and a comampton and State of Pennsylvania, citizens mon head 12 is provided for the adjacent ends of the United States, have invented a new and of the high-pressure cylinder 2 and the said useful Improvement in Compressors for Air low-pressure cylinder 4. These three cylinor other Aeriform Bodies,of which the followders are rigidly secured together, thus insur- :0 ing is a specification. ing theirproperalinement. Thelow-pressure This'invention relates to what are known cylinder is represented as double-acting, and as compound compressors. the high-pressure cylinderand intermediate- The object of this invention is to provide pressure cylinder are represented as singlecertain improvements in the construction, acting.

15 form, and arrangement of the several parts The arrangement of the inlet and outlet whereby a simple, strong, and effective strucand the several valves of the compressor is as ture is provided for use as a high-power follows: A main inlet-pipe 13 for the fluid to compressor. be compressed is in communication with a This invention consistsin acompressor comduct 14 15 in the wall of the low-pressure cyl- 2o prising a high-pressure cylinder, an interinder, the branch 14 of which duct leads to mediate-pressure cylinder, and a low-presan inlet-valve 16 at one end of the low-pressure cylinder placed between the two and in sure cylinder, and the branch 15 of the said alinement therewith,pistons for the three cylduct leads to an inlet-valve 17 at the other inders connected to move together,and means end of the said low-pressure cylinder.

25 for operating the pistons. A discharge-duct 18 19 for the low-pressure A practical embodiment of our invention is cylinder is located in the Wall of the said cylrepresented in the accompanying drawing, in inder, the branch 18 of which leads to a diswhich the compressor is shown in longitudicharge-valve 20 at one end of the cylinder, nal central section together with its tank, the and the branch 19 of which leads to a diso pistons being shown at points half-way be charge-valve 21 at the other end of the cyltween the limits of their strokes. inder.

1 designates the tank within which the com- A tube 22 leads from the low-pressure cyl pressor is located, the tank being intended to inder discharge-duct 18 19 to the inlet-valve contain water for keeping the several partsof 23 atthe outer end of the intermediate-pres- 35 the compressor at an oven temperature. 7 sure cylinder 3. A tube 24 leads from the dis-.

The compressor as a whole comprises a charge-valve 25 at the outer end ofthe interhigh-pressure cylinder 2, an intermediatemediate-pressure cylinder 3 to aninlet-valve pressure cylinder 3, and a low-pressure cyl- 26 in the outer cylinder-head 27 of the said inder t, placed in alinement with one another, high-pressure cylinder. A discharge-Valve 0 the low-pressure cylinder being located be- 28 is also located in the cylinder-head 27 ot' tween the high-pressure cylinder and the inthe high-pressure cylinder, which discharge- I termediate-pressure cylinder. valve controls the escape of the compressed A single operating-rod 5 passes through a fluid into the discharge-pipe 29, from which go suitable stuffing-box 6 in the outerhead '7 of the compressed-fluid maybe fed to a reser 45 the intermediate-pressure cylinder 3, which voir or other point. (Not shown herein.)

operating-rod 5 is developed into a piston 8' Itis to he understood that the severalvalves for the intermediate-pressure cylinder, a pisherein mentioned maybe made of any suitable form to suit the work to which they are subjected and may be provided with the usual valve boxes and seats.

In a compressor constructed as herein described we are enabled to provide a single operating-rod and stuffing-box for the three pistons, thus permitting only one point through which the d uid being compressed can escape to the atmosphere. By making the low-pressure cylinder double-acting and locating the high-pressure cylinder upon one side thereof and the intermediate-pressure cylinder upon the other side thereof, all in alinement, we are enabled to proportion the several cylinders so that for economical working the maximum strains in both directions are substantially equal and the average pressure or mean effective pressure is also nearly constant in both directions, thereby causing a smoothly-working machine. Furthermore, the capacity of the machine is not affected by the leakage of fluid by the high-pressure and intermediate pistons occurring during the compression strokes as the fluid passes back into the compression side of the low-pressure cylinder. By combining the three cylinders we are enabled to get them into a much smaller space than has been possible heretofore, and the construction at the same time is very rigid.

.What we claim is- 1. A compressor comprising a high-pressure cylinder, an intermediate-pressure cylinder and a low-pressure cylinder placed between the two and in alinement therewith,

pistons for the three cylinders connected to move together and means for operating the pistons.

2. A compressor comprisingasingle-acting high-pressure cylinder, a single-acting intermediate-pressure cylinder, and a double-act ing low-pressure cylinder placed between the two and in alinement therewith, pistons for the three cylinders connected to move together and means for operating the pistons.

3. A compressor comprising a high-pressure cylinder an intermediate-pressure cylinder, a low-pressure cylinder, pistons therefor, connected to move together, means for operating the pistons, a common cylinderhead for the adjacent ends of the high and low pressure cylinders and a common cylinder-head for the adjacent ends of the intermediate and low pressure cylinders.

In testimony that we claim the foregoing as our joint invention I have signed my name, in presence of two witnesses, this 2d day of January, 1903.

HENRY O. SERGEANT. Witnesses:

FREDK. HAYNES, O. S. SUNDGREN. In testimony that we claim the foregoing as our joint invention I have signed my name, in presence of two witnesses, this 10th day of January, 1903.

WARD RAYMOND. Witnesses:

ROBERT A. HAMILTON, H. D. MAXWELL.

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