US170363A - Improvement in devices for refitting valve-seats - Google Patents

Improvement in devices for refitting valve-seats Download PDF

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Publication number
US170363A
US170363A US170363DA US170363A US 170363 A US170363 A US 170363A US 170363D A US170363D A US 170363DA US 170363 A US170363 A US 170363A
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United States
Prior art keywords
seats
valve
refitting
tool
improvement
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Expired - Lifetime
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/02—Milling surfaces of revolution
    • B23C3/05—Finishing valves or valve seats
    • 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
    • Y10T137/00—Fluid handling
    • Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
    • Y10T137/4245—Cleaning or steam sterilizing
    • Y10T137/4273—Mechanical cleaning
    • Y10T137/428—Valve grinding motion of valve on seat
    • Y10T137/4287—Concentric stem
    • 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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
    • Y10T408/557—Frictionally engaging sides of opening in work
    • Y10T408/558—Opening coaxial with Tool
    • Y10T408/5587—Valve fitting
    • 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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
    • Y10T408/564—Movable relative to Tool along tool-axis
    • Y10T408/5647—Movable relative to Tool along tool-axis including means to move Tool

Definitions

  • My invention consists of a kind of double coneshaped stock, with differential screwthreaded facets for fitting into different-sized screw-threaded holes in the shells ofthe valves to hold the refitting-tool, which stock has a screw-threaded central hole, in which is a hollow threaded feed screw, which holds the shank of the refitting-tool in its central hole, and forces the tool down to its work by screwing in the aforesaid stock against a shoulder on the tool-shank.
  • a jam-nut is provided on the feed screw, to hold it in any position to which it may be adjusted by screwing against the stock, and prevent it from being turned by the shank of the tool, which is turned by a wrench or crank applied to the end projecting up through the top or outer end of the feed-screw, all as hereinafter described.
  • Figure 1 is a vertical sectional elevation of my improved refitting apparatus and the shell of a globe-valve, showing the application of the tool to the valve-seat.
  • Fig. 2 is a horizontal section of the apparatus, taken on the line :20 w.
  • A represents the before-mentioned double conical-shaped stock, with differential screwthreaded facets B, by which it is adapted to fit shells O of different sizes, with holes D, varying in size, in which holes the stock is to be screwed to hold the milling-tool E for dressing off the valve-seat F, in the manner clearly indicated in Fig. 1.
  • the middle facet B is used for turning the stock.
  • This stock has a central longitudinal screw threaded hole application of a Wrench for turning it, andhaving a shoulder, M, against which the inner end of the feed-screw bears to .hold it to its work.
  • the cutter is of the ordinary kind of conical milling-tools used in dressing valveseats. 1
  • the screw H is screwed down against the tool, so as to press it on the valve-seat with considerable force, and made fast by the jam-nut.
  • the wrench is then applied to the shank L, and the tool is turned as long as it continues to cut, working out a perfectly true face by being held without feeding forward, so that all the cuts ultimately Vanish, and leave no marks or ridges.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

V c. r. HALL. DEVICE FOR mmmme VALVE-SEATS. N.17o,3e3, Patented Nov. 23,1875.
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N. PETERS. Pfi0TOLITNOGRAPNER, WASHINGTON. D. C.
UNITED STATES PATEN QFFIGE.
CHARLES F. HALL, OF SKANEATELES, NEW YORK.
IMPROVEMENT IN DEVICES FOR REFITTING VALVE'SEATS.
Specification forming part of Letters Patent No. 170,363, dated November 23, 1875; application filed February 16, 1875.
CAsE A.
To all whom it may concern:
Be it known that I, CHARLES E. HALL, of Skaneateles, in the county of Onondaga and State of New York, have invented a new and Improved Apparatus for ReiittingValve-Seats of Globe-Valves, of which the following is a specification:
My invention consists of a kind of double coneshaped stock, with differential screwthreaded facets for fitting into different-sized screw-threaded holes in the shells ofthe valves to hold the refitting-tool, which stock has a screw-threaded central hole, in which is a hollow threaded feed screw, which holds the shank of the refitting-tool in its central hole, and forces the tool down to its work by screwing in the aforesaid stock against a shoulder on the tool-shank. A jam-nut is provided on the feed screw, to hold it in any position to which it may be adjusted by screwing against the stock, and prevent it from being turned by the shank of the tool, which is turned by a wrench or crank applied to the end projecting up through the top or outer end of the feed-screw, all as hereinafter described.
Figure 1 is a vertical sectional elevation of my improved refitting apparatus and the shell of a globe-valve, showing the application of the tool to the valve-seat. Fig. 2 is a horizontal section of the apparatus, taken on the line :20 w.
Similar letters of reference indicate corresponding parts.
A represents the before-mentioned double conical-shaped stock, with differential screwthreaded facets B, by which it is adapted to fit shells O of different sizes, with holes D, varying in size, in which holes the stock is to be screwed to hold the milling-tool E for dressing off the valve-seat F, in the manner clearly indicated in Fig. 1. The middle facet B is used for turning the stock. This stock has a central longitudinal screw threaded hole application of a Wrench for turning it, andhaving a shoulder, M, against which the inner end of the feed-screw bears to .hold it to its work. The cutter is of the ordinary kind of conical milling-tools used in dressing valveseats. 1
In using this apparatus, the screw H is screwed down against the tool, so as to press it on the valve-seat with considerable force, and made fast by the jam-nut. The wrench is then applied to the shank L, and the tool is turned as long as it continues to cut, working out a perfectly true face by being held without feeding forward, so that all the cuts ultimately Vanish, and leave no marks or ridges.
Having thus described myinven tion, I claim as new and desire to secure by Letters Patent- The combination of the stock A, with differential screw-threaded facets, feed-screw H, jam-nut K, and the refitting-tool E, shank L, and collar M, substantially as specified.
CHARLES F. HALL.
Witnesses:
S. L. BENEDICT, F. B. BENEDICT.
US170363D Improvement in devices for refitting valve-seats Expired - Lifetime US170363A (en)

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