US700646A - Fluid-operating device. - Google Patents

Fluid-operating device. Download PDF

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Publication number
US700646A
US700646A US4407501A US1901044075A US700646A US 700646 A US700646 A US 700646A US 4407501 A US4407501 A US 4407501A US 1901044075 A US1901044075 A US 1901044075A US 700646 A US700646 A US 700646A
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Prior art keywords
fluid
piston
pump
operating device
cylinder
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Expired - Lifetime
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US4407501A
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James Hartness
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2142—Pitmans and connecting rods
    • Y10T74/2144—Yieldable

Definitions

  • This invention has for its object to provide a feeding pump or accumulator for fluid-operated machines, in which the pressure in the 'discharge or exhaust pipe may be yielding feeding-pump in section, said pump being at-' tached to the casing of an operating-pump, to which no further reference is to be made, as it forms no part of the present invention.
  • the cylinder is indicated at It and is shown as horizontally arranged, though this arrangement is not material.
  • Its inlet-port is provided with a check-valve k, which permits the inflow of fluid from the pipe k leading from a suitable source of fluid-supply.
  • the exhaust-port has a check-valve by which fluid is permitted to flow under pressure to the exhaust or delivery pipe
  • the play of the inlet-valve may be limited by an adjustable screw 70 having a pin or projection 7.3 arranged in alinement with said valve. This screw has provisions by which it may be rotated by a suitable tool.
  • the piston m consists of a rod which reciprocates into and out of the cylinder through a stuffing-box m, the movement of the piston being regulated by an adjusting-screw m passed upward into the cylinder, as shown.
  • the piston extends into a plunger 0,which is hollow, as shown, to receive a spring 0,which bears against the head m of the piston and holds it yieldingly against a bushing oiwhich is screwed into the end of the plunger.
  • said plunger slides in a guide 1), and its upper end is connected by an abutment p with the crank-pingfi, carried by a disk p on a shaft 19 journaled in bearings in the top of the casing a.
  • the shaft is equipped with a pulley 19 which may be driven at different speeds, according to the desired rate of flow of the liquid.
  • the pulley p is driven by a belt from some automatically-controlled part of the lathe or "fluid-operated machine with which it is used.
  • the reciprocation of the eccentric effects a reciprocation of the spring-pressed piston m, and as the latter moves into and out of the cylinder the liquid is forced into and out therefrom.
  • the strength of the spring is so proportioned to the area 0 piston m as to give a pressure exceeding a 1 normal resistances, so that the volume of liquid delivered by this feeding-pump will be a certain quantity per stroke, which quantity per stroke, however, may be regulated by the adj usting-screw m
  • the pressure of the liquid delivered by the operating-pump may be very slightj ust enough for the free movement of the parts of the machine-and the pressure of the liquid delivered by the feeding-pump can be increased or made as much greater as is necessary to meet the greatest requirements of the cutting-tools.
  • a pump comprising a cylinder, having inlet and outlet valves, a headed piston operating in said cylinder, a reciprocatory hollow rod in which said piston is telescoped, a spring in said rod bearing againstthe head of said piston, and a bushing in said rod for loosely engaging the head of said piston, whereby the suction-stroke of said piston is positive, and its operative stroke is yielding.

Description

No. 700,646. Patented May 20, I902. .1 HARTNESS. FLUID. opmmue DEVICE.
(Application filed Tm:- 21, 1901.)
(No Model.)
WITH E5 5E5 UNITED STATES PATENT FFICE.
JAMES HAETNEss, or SPRIN FIE D, VERMONT.
FLUID-OPERATING DEVICE.
SPECIFICATION forming part of Letters Patent No. 700,646, dated May 20, 1902. Application filed January 21, 1901. Serial No. 44,075. (No model.)
To all whom, it may concern.-
Be it known that 1, JAMES HARTNESS, of Springfield, in the county of Windsor and State of Vermont, haveinveuted certain new and useful Improvements in Fluid-Operating Devices, of which the following is a specification.
This invention has for its object to provide a feeding pump or accumulator for fluid-operated machines, in which the pressure in the 'discharge or exhaust pipe may be yielding feeding-pump in section, said pump being at-' tached to the casing of an operating-pump, to which no further reference is to be made, as it forms no part of the present invention.
The cylinder is indicated at It and is shown as horizontally arranged, though this arrangement is not material. Its inlet-port is provided with a check-valve k, which permits the inflow of fluid from the pipe k leading from a suitable source of fluid-supply. The exhaust-port has a check-valve by which fluid is permitted to flow under pressure to the exhaust or delivery pipe The play of the inlet-valve may be limited by an adjustable screw 70 having a pin or projection 7.3 arranged in alinement with said valve. This screw has provisions by which it may be rotated by a suitable tool.
The piston m consists of a rod which reciprocates into and out of the cylinder through a stuffing-box m, the movement of the piston being regulated by an adjusting-screw m passed upward into the cylinder, as shown. The piston extends into a plunger 0,which is hollow, as shown, to receive a spring 0,which bears against the head m of the piston and holds it yieldingly against a bushing oiwhich is screwed into the end of the plunger. The
said plunger slides in a guide 1), and its upper end is connected by an abutment p with the crank-pingfi, carried by a disk p on a shaft 19 journaled in bearings in the top of the casing a. The shaft is equipped with a pulley 19 which may be driven at different speeds, according to the desired rate of flow of the liquid.
Preferably the pulley p is driven by a belt from some automatically-controlled part of the lathe or "fluid-operated machine with which it is used. When the shaft 19 is rotated, the reciprocation of the eccentric effects a reciprocation of the spring-pressed piston m, and as the latter moves into and out of the cylinder the liquid is forced into and out therefrom.
The strength of the spring is so proportioned to the area 0 piston m as to give a pressure exceeding a 1 normal resistances, so that the volume of liquid delivered by this feeding-pump will be a certain quantity per stroke, which quantity per stroke, however, may be regulated by the adj usting-screw m One of the advantages of this construction and arrangement is that the pressure of the liquid delivered by the operating-pump may be very slightj ust enough for the free movement of the parts of the machine-and the pressure of the liquid delivered by the feeding-pump can be increased or made as much greater as is necessary to meet the greatest requirements of the cutting-tools.
Having thus explained the nature of the invention and described a way of constructing and using the same, although without attempting to set forth all of the forms in which it may be made or all the modes of its use, I declare that what I claim is- A pump comprising a cylinder, having inlet and outlet valves, a headed piston operating in said cylinder, a reciprocatory hollow rod in which said piston is telescoped, a spring in said rod bearing againstthe head of said piston, and a bushing in said rod for loosely engaging the head of said piston, whereby the suction-stroke of said piston is positive, and its operative stroke is yielding.
In testimony whereof I have affixed my signature in presence of two'witnesses.
JAMES HARTNESS.
Vitnesses:
W. Lu ROY BRYANT, HORACE BROWN.
US4407501A 1901-01-21 1901-01-21 Fluid-operating device. Expired - Lifetime US700646A (en)

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US4407501A US700646A (en) 1901-01-21 1901-01-21 Fluid-operating device.

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US4407501A US700646A (en) 1901-01-21 1901-01-21 Fluid-operating device.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955539A (en) * 1959-05-28 1960-10-11 Lawrence H Gardner Positive displacement pump
US4527463A (en) * 1983-09-01 1985-07-09 Dragerwerk Aktiengesellschaft Dosing pump for liquids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955539A (en) * 1959-05-28 1960-10-11 Lawrence H Gardner Positive displacement pump
US4527463A (en) * 1983-09-01 1985-07-09 Dragerwerk Aktiengesellschaft Dosing pump for liquids

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