US751996A - Multiple-expansion engine - Google Patents

Multiple-expansion engine Download PDF

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Publication number
US751996A
US751996A US751996DA US751996A US 751996 A US751996 A US 751996A US 751996D A US751996D A US 751996DA US 751996 A US751996 A US 751996A
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cylinders
pressure
expansion engine
head
piston
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/032—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum brakes

Definitions

  • FREDERICK M PRESCOTT, OF MIL'WAUKEE, WVISCONSIN, ASSIGNOR TO FRED M.
  • PRESCOTT STEAM PUMP COMPANY OF WEST ALLIS, WIS- CONSIN, A CORPORATION OF WISCONSIN.
  • This invention relates particularly to tripleexpansion engines in which the cylinders are arranged in tandem or end to end in line with each other.
  • the main object of the invention is to provide for easy access to the several cylinders and for the removal of the pistons and pistonrods without detaching or displacing any of the several cylinders.
  • A, B, and O designate the high, intermediate, andlow pressure cylinders, respectively
  • the high-pressure cylinder A is located next to the cross-head D, and the low-pressure cylinder farthest from it. A space is left between the intermediate and low pressure cylinders A and B suflicient for the removal of the rear head and the piston & of the intermediate cylinder.
  • the high-pressure and intermediate pistons a and Z1 are connected with each other by a single central rod d, passing through a sleeve or bushing e in the intervening heads of the intermediate and high pressure cylinders.
  • intermediate piston Z2 is connected with the cross-head D by side rods f f, passing outside of the high-pressure cylinder through stuffing-boxes g g in the front head of the intermediate cylinder.
  • the low-pressure piston c is connected with the cross-head D by side rods h it, passing through stuffing-boxes it in the front headof the low-pressure cylinder and outside of the intermediate and high pressure cylinders.
  • the front head 1' of the high-pressure cylinder and the rear heads k and Z of the intermediate and low pressure cylinders are detachable and removable, affording easy access to the several cylinders and means for readily withdrawing therefrom any of the several,
  • pistons without detaching or displacing any of the cylinders.
  • the several pistons are secured to the piston-rods by nuts or other means accessible through the ends of the cylinders to which the removable heads are attached.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

No. 751,996. PATENTED FEB. 9, 1904;
' I P. M. PRESCOTT.
MULTIPLE EXPANSION ENGINE.
APPLIGATION FILED 00T.16, 1902.
96mm Q m: vandals PEYERS co. mum-Lmm. wksnmcn'un. 0.1:;-
UNITED STATES Patented February 9, 1904.
PATENT OFFICE.
FREDERICK M. PRESCOTT, OF MIL'WAUKEE, WVISCONSIN, ASSIGNOR TO FRED M. PRESCOTT STEAM PUMP COMPANY, OF WEST ALLIS, WIS- CONSIN, A CORPORATION OF WISCONSIN.
MULTIPLE-EXPANSION ENGINE.
SPECIFICATION forming part of Letters Patent N 0. 751,996, dated February 9, 1904. Application filed October 16, 1902. Serial No. 127,581. (No model.)
To ctZZ whom it may concern.-
Be it known that I, FREDERICK M. Pnnsoo'rr, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Multiple-Expansion Engines, of which the following is a specification, reference being had to the accompanying drawing, forming a part thereof.
This invention relates particularly to tripleexpansion engines in which the cylinders are arranged in tandem or end to end in line with each other.
The main object of the invention is to provide for easy access to the several cylinders and for the removal of the pistons and pistonrods without detaching or displacing any of the several cylinders.
It consists in certain novel features of construction and in the peculiar arrangement and combination of parts hereinafter particularly described, and pointed out in the claim.
The accompanying drawing is a central longitudinal section of a triple-expansion engine embodying the invention.
A, B, and O designate the high, intermediate, andlow pressure cylinders, respectively,
which are arranged end to end in line with each other, and a, b, and c are the pistons fitted in said cylinders. The high-pressure cylinder A is located next to the cross-head D, and the low-pressure cylinder farthest from it. A space is left between the intermediate and low pressure cylinders A and B suflicient for the removal of the rear head and the piston & of the intermediate cylinder.
The high-pressure and intermediate pistons a and Z1 are connected with each other by a single central rod d, passing through a sleeve or bushing e in the intervening heads of the intermediate and high pressure cylinders. The
intermediate piston Z2 is connected with the cross-head D by side rods f f, passing outside of the high-pressure cylinder through stuffing-boxes g g in the front head of the intermediate cylinder. The low-pressure piston c is connected with the cross-head D by side rods h it, passing through stuffing-boxes it in the front headof the low-pressure cylinder and outside of the intermediate and high pressure cylinders.
The front head 1' of the high-pressure cylinder and the rear heads k and Z of the intermediate and low pressure cylinders are detachable and removable, affording easy access to the several cylinders and means for readily withdrawing therefrom any of the several,
pistons without detaching or displacing any of the cylinders. The several pistons are secured to the piston-rods by nuts or other means accessible through the ends of the cylinders to which the removable heads are attached.
I claim In a multiple-expansion engine the combination of high, intermediate and low pressure cylinders arranged end to end in line with each other, a space being left between the intermediate and low pressure cylinders, pistons fitted in said cylinders, a rod connecting the intermediate piston with the high-pressure piston, a cross-head, side rods passing outside of the high-pressure cylinder and connecting the intermediate piston with said crosshead, and side rods passing outside ofthe in termediate and high pressure cylinders and connecting the low-pressure piston with said cross-head, the front head of the high-pressure cylinder and the rearheads of the inter mediate and low pressure cylinders being removable, substantially as described.
In Witness whereof I hereto aflix my signature in presence of two witnesses. T
FREDERICK M. PRESCOTT. lVitnesses:
CHAs. L. GOSS, JOSEPH F. KAMINsKY.
US751996D Multiple-expansion engine Expired - Lifetime US751996A (en)

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