US197951A - Improvement in valve-motions for steam-engines - Google Patents

Improvement in valve-motions for steam-engines Download PDF

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US197951A
US197951A US197951DA US197951A US 197951 A US197951 A US 197951A US 197951D A US197951D A US 197951DA US 197951 A US197951 A US 197951A
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valve
steam
engines
improvement
motions
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01BMACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B17/00Reciprocating-piston machines or engines characterised by use of uniflow principle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/12Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/21Elements
    • Y10T74/2142Pitmans and connecting rods
    • Y10T74/2144Yieldable
    • Y10T74/2148Automatic release

Definitions

  • the object of my invention is to alternately open and close the valves common to steamengines ordonkey steam-pumps by means of mechanism fully explained in the following specification and claim.
  • v Figure 1 is a side elevation.
  • Fig. 2 is a plan.
  • a rep resents the piston-rod that connects the pistons of the donkey engine and pump together.
  • B is the valve-rod common to steamengines and donkey-pumps. It is connected with the steam-valve P at S, and worked, as usual, through a stuffing-box.
  • O is an adjustable arm, common to donkeypumps, fastened on A by means of the setscrew D.
  • the upper end of the arm plays freely over the valve-rod B.
  • E and F are two adjustable rectangular latch-blocks, fastened on B with set-screwson opposite sides of the arm 0. They are capable of being changed by reversing their ends or revolving them on B, so that when one latching-point wears, five others may be used before the blocks are Worn out.
  • the functions of these latch-blocks are to hold, in connec tion with the hooks'K and L, the valve at any desired point on opposite sides of the steamports.
  • G and H are bell-crank rock-shafts, suspended on pivot-b0lts in .the frame of the engine, on opposite sides of the arm 0.
  • M and ton is atthe end of its stroke, as shown at L.
  • R represents the frame between the steamengine and pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Cookers (AREA)
  • Transmission Devices (AREA)
  • Mechanically-Actuated Valves (AREA)

Description

H. TAYLOR.
Valve-Motion for Steam-Engines.
No. 197,951. Patented Dec, 11 I877 i Rtd -WITN E SSE s.- --'JNV ENT 0R MPEFERS. F'HOTOU1HOGRAFHER. WASHINGTON. D C.
is l
l l l UNITED STATES PATENT QFFIGE.
HENRY TAYLOR, OF BALTIllIORE, MARYLAND.
IMPROVEMENT IN VALVE-MOTIONS FOR STEAM-ENGINES.
Specification forming part of Letters Patent No. 197,951, dated December 11, 1877; application filed October 27, 1877.
To all whom it may concern:
Be it known that I, HENRY TAYLOR, of Baltimore city and State of Maryland, have invented a new and useful Improvement in Valve- Motions for Steam-Engines or Donkey Steam or Air Pumps, which improvement is fully set forth in the following specification, reference I being had to the accompanying drawings.
The object of my invention is to alternately open and close the valves common to steamengines ordonkey steam-pumps by means of mechanism fully explained in the following specification and claim.
vFigure 1 is a side elevation. Fig. 2 is a plan.
Like letters represent like parts in each.
A rep resents the piston-rod that connects the pistons of the donkey engine and pump together. B is the valve-rod common to steamengines and donkey-pumps. It is connected with the steam-valve P at S, and worked, as usual, through a stuffing-box.
O is an adjustable arm, common to donkeypumps, fastened on A by means of the setscrew D. The upper end of the arm plays freely over the valve-rod B.
E and F are two adjustable rectangular latch-blocks, fastened on B with set-screwson opposite sides of the arm 0. They are capable of being changed by reversing their ends or revolving them on B, so that when one latching-point wears, five others may be used before the blocks are Worn out. The functions of these latch-blocks are to hold, in connec tion with the hooks'K and L, the valve at any desired point on opposite sides of the steamports.
G and H are bell-crank rock-shafts, suspended on pivot-b0lts in .the frame of the engine, on opposite sides of the arm 0. M and ton is atthe end of its stroke, as shown at L.
R represents the frame between the steamengine and pump.
The operation of my invention is as follows:
When the piston-rod A moves in the direction of the arrow T the arm 0 continues to compress the spring N- against the block F until the piston is nearly at the end of its stroke, when the arm 0 strikes the pendent lever J of the'rock-shaft, and raises the hook L above the block F, when the force of the spring reverses the valve, and the piston moves in the opposite direction, performing. a like action, thus securing a constant and reliab e motion to the engine and pump., This method of operating valves may also be used as a cut-ofl' to use steam expansively, for which I contemplate applying for a separate patent.
Having described the construction'and operation of my invention, I claimr The arrangement of the piston-rod A, valverod B, arm 0, latch-blocks E and F, rockarms G and H, springs M and N, spring 0, i and valve P,said parts being constructed and operating substantially as herein shown and described,,and for the purpose set forth.
HENRY TAYLOR. Witnesses:
WM. LOUGHRIDGE, W. T. JORDAN.
US197951D Improvement in valve-motions for steam-engines Expired - Lifetime US197951A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425007A (en) * 1945-01-11 1947-08-05 John H Rouse Motor control means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425007A (en) * 1945-01-11 1947-08-05 John H Rouse Motor control means

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