US149971A - Improvement in bushings for grinding globe-valves - Google Patents

Improvement in bushings for grinding globe-valves Download PDF

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Publication number
US149971A
US149971A US149971DA US149971A US 149971 A US149971 A US 149971A US 149971D A US149971D A US 149971DA US 149971 A US149971 A US 149971A
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Prior art keywords
grinding
valves
globe
bushings
valve
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B15/00—Machines or devices designed for grinding seat surfaces; Accessories therefor
    • 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

Definitions

  • the object of my invention is 'to provide means enabling the accurate grinding ot ⁇ the valve in its seat, and 1n y invention consists in the provision of a detachable two-part bushing, the exterior of which lits the thread otl the valve-shell, and the interior otl which is smoothly bored to tit the exterior otl the screw on the valve-stem.
  • Figure l is a vertical section ot' a globevalve embodying my improvements.
  • Fig. 2 is a perspective4 view of the detachable bushing.
  • A is the shell or casing ot' the valve, having the usual diaphragm B, in which the seat is formed.
  • C is the Valve, havin g the customary screw-threaded stem D and wheel E.
  • the case A is tted with the nut F to match the screwthread of the stem, the -nut being tted with the ordinary starting-box F to pack the. smooth part of the stem.
  • a projection, G is formed, which is turned truly concentric vvith the Valve.
  • a socket, H is either formed upon or attached to the case A, and bored out concentric with the valve-seat, and of such diameter as to enable the projection H to snugly tit itc
  • This connection ofthe socket H with the projection Gr constitutes a guide, which, in small-sized valves, is sufficient to prevent the valve from being ground out of line.
  • I provide the detachable two-part bushing I I. These parts,whcn together, lit into the screw-threaded aperture in the case A, from Which the nut F is necessarily Withdrawn before grinding, in the manner shown in Fig. 1, and the interior of this bushing is smoothly bored to fit the exterior ofthe square thread of the valve-stem, thus serving as a guide to prevent the upper end ot' the stem from Wobbling77 eccentrically in the operation of grinding.
  • the interior projection of the case, in which the socket H is formed may be separate] y at tached, as shown, for repairs of old style valves, or may be formed upon the case A in the original casting of it.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Description

BAINS.
Bushings for Grinding Globe-Valves.
Patented April 2i, i874..
y i W UNITED STATES PATENT (,)EEICE JAMES BAINs, or CINCINNATI, CHIC, AssIeNoE To CRANE, BREED a Co.
IMPROVEMENT IN BUSHINGS FOR GRINDING GLOBE-VALVES.
Specification forming part of Letters Patent No. 149,97 l, dated April 21, 1874; application filed March 5, 1874.
To all whom it may concern:
Bc it known that I, JAMES BAINS, of Cineinnati, Hamilton county, State of Ohio, have invented a certain. neuT and useful Improve-A ment in Globe-Valve Bushings, of which the following is a specification:
The object of my invention is 'to provide means enabling the accurate grinding ot` the valve in its seat, and 1n y invention consists in the provision of a detachable two-part bushing, the exterior of which lits the thread otl the valve-shell, and the interior otl which is smoothly bored to tit the exterior otl the screw on the valve-stem.
Figure l is a vertical section ot' a globevalve embodying my improvements. Fig. 2 is a perspective4 view of the detachable bushing.
A is the shell or casing ot' the valve, having the usual diaphragm B, in which the seat is formed. C is the Valve, havin g the customary screw-threaded stem D and wheel E. The case A is tted with the nut F to match the screwthread of the stem, the -nut being tted with the ordinary starting-box F to pack the. smooth part of the stem. 'Io the lower face ofthe valve a projection, G, is formed, which is turned truly concentric vvith the Valve. A socket, H, is either formed upon or attached to the case A, and bored out concentric with the valve-seat, and of such diameter as to enable the projection H to snugly tit itc This connection ofthe socket H with the projection Gr constitutes a guide, which, in small-sized valves, is sufficient to prevent the valve from being ground out of line. As an additional securi ty against inaccurate grinding, I provide the detachable two-part bushing I I. These parts,whcn together, lit into the screw-threaded aperture in the case A, from Which the nut F is necessarily Withdrawn before grinding, in the manner shown in Fig. 1, and the interior of this bushing is smoothly bored to fit the exterior ofthe square thread of the valve-stem, thus serving as a guide to prevent the upper end ot' the stem from Wobbling77 eccentrically in the operation of grinding.
The interior projection of the case, in which the socket H is formed, may be separate] y at tached, as shown, for repairs of old style valves, or may be formed upon the case A in the original casting of it.
I claim- For attachment to globe-valves, substan tially in the manner and for the purpose specified, the two-part bushing I I connected and operating as described.
In testimony of which invention I hereunto set my hand. v
JAMES BAINS. vWitnesses GEC. W. CCRMANY, GEO. S. URURLER.
US149971D Improvement in bushings for grinding globe-valves Expired - Lifetime US149971A (en)

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