US187661A - Improvement in pet-cocks for steam-engines - Google Patents

Improvement in pet-cocks for steam-engines Download PDF

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US187661A
US187661A US187661DA US187661A US 187661 A US187661 A US 187661A US 187661D A US187661D A US 187661DA US 187661 A US187661 A US 187661A
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steam
pet
cock
engines
cocks
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    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K49/00—Means in or on valves for heating or cooling
    • F16K49/005—Circulation means for a separate heat transfer fluid
    • F16K49/007—Circulation means for a separate heat transfer fluid located within the obturating element
    • 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
    • Y10T137/6416—With heating or cooling of the system
    • Y10T137/6579—Circulating fluid in heat exchange relationship

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  • MATHEW MEEHAN or ATHENS, PENNSYLVANIA.
  • My object is to provide a simple means to keep the pet cock in condition to open at all times, and the pumps always in working order, and free from the disadvantage of having to thaw out the cock before the pumps can be used.
  • I have improved the petcock by a simple and novel construction, in which the cock proper is surrounded at its junction with the barrel by a steam chamber having communication with the boiler, so that the heat from the steam will be applied dicock, and within a spherical chamber through which said seat and cook both pass. making a cheap casting with the water-way, the cock-seat, and the steamcirculating chamber as a unitary, and within the immediatejunction of the cock and its seat and the barrel.
  • Figure 1 represents a vertical section of a boiler petcock embracing my invention
  • Fig. 2 a similar section at right angles to Fig. l
  • Fig. 3 a horizontal section.
  • the tube or barrel A and the plug or cock B are of the ordinary construction for open-' ing and closing the water-passage connecting the pumps with the boiler; but in constructing these parts I cast a spherical shell, 0, forming a chamber, D, at their junction, which surrounds the seat a, for the cock and the water tube orbarrel b, and constituting in efi'ect a pet-cock with a jacket and circulating-chamber as an entirety,'and within which chamber the steam enters at the inlet 0, and, giving out its heat upon the walls of the plug-seat and of the water tube or barrel, passes out at d, and keeps the cock entirely free from freezing, and the pumps always in condition for use.
  • a current of steam is passed round the petcock seat, where it joins the barrel, by means of a suitable connecting-pipe, provided with a cock to let on and cut off the flow of steam when desired.
  • the opening 01 for the escape of the steam is made at the bottom of the chamber, to allow the condensation to pass out, while the inlet-opening c is arranged to deliver the steam directly against the walls of the plug-seat and water ways.
  • the device is especially applicable for locomotives.
  • a pet-cock provided with a steam jacket or chamber, G D, encompassing the intermediate junction of water-tube I) and cook B, around which junction the steam enters, circulates, and passes out, substantially as described.
  • the inlet-port 0 arranged in such position as to cause the steam-jet to impinge directly upon the junctions of cock and barrel, in combination with the outlet d, for the purpose set forth.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)

Description

M. MEEH AN. PETCOCK FOR STEAM-ENGINE.
Patented Feb. 20
N-FETERS, FHOTO-UTHOGMPHER. WASHINGTON- D C.
rectly to the seat of the Unrrnp STATES PATENT OFFICE.
MATHEW MEEHAN, or ATHENS, PENNSYLVANIA.
IMPROVEMENT IN PET-COCKS FOR STEAM-ENGINES.
Specification forming part of Letters Patent No. l 87,661. dated February 20, 1877; application filed September 29, 1876.
To all whom it may concern Be it known that I, MATHEW MEEHAN, of Athens, in the county of Bradford and State of Pennsylvania, have invented certain new and useful Improvements in Pet Cocks for Steam-Engines, of which the following isa specification In steam-engines the pet-cock is liable to freeze in Winter, and to interfere with the working of the pumps.
My object is to provide a simple means to keep the pet cock in condition to open at all times, and the pumps always in working order, and free from the disadvantage of having to thaw out the cock before the pumps can be used. For this purpose I have improved the petcock by a simple and novel construction, in which the cock proper is surrounded at its junction with the barrel by a steam chamber having communication with the boiler, so that the heat from the steam will be applied dicock, and within a spherical chamber through which said seat and cook both pass. making a cheap casting with the water-way, the cock-seat, and the steamcirculating chamber as a unitary, and within the immediatejunction of the cock and its seat and the barrel.
In the accompanying drawings, Figure 1 represents a vertical section of a boiler petcock embracing my invention; Fig. 2, a similar section at right angles to Fig. l, and Fig. 3 a horizontal section.
The tube or barrel A and the plug or cock B are of the ordinary construction for open-' ing and closing the water-passage connecting the pumps with the boiler; but in constructing these parts I cast a spherical shell, 0, forming a chamber, D, at their junction, which surrounds the seat a, for the cock and the water tube orbarrel b, and constituting in efi'ect a pet-cock with a jacket and circulating-chamber as an entirety,'and within which chamber the steam enters at the inlet 0, and, giving out its heat upon the walls of the plug-seat and of the water tube or barrel, passes out at d, and keeps the cock entirely free from freezing, and the pumps always in condition for use. A current of steam is passed round the petcock seat, where it joins the barrel, by means of a suitable connecting-pipe, provided with a cock to let on and cut off the flow of steam when desired. The opening 01 for the escape of the steam is made at the bottom of the chamber, to allow the condensation to pass out, while the inlet-opening c is arranged to deliver the steam directly against the walls of the plug-seat and water ways.
The device is especially applicable for locomotives.
-I claim 1. A pet-cock provided with a steam jacket or chamber, G D, encompassing the intermediate junction of water-tube I) and cook B, around which junction the steam enters, circulates, and passes out, substantially as described.
2. In a pet-cock provided with a steamjacket, as described, the inlet-port 0, arranged in such position as to cause the steam-jet to impinge directly upon the junctions of cock and barrel, in combination with the outlet d, for the purpose set forth.
In testimony whereof I have affixed my signature in the presence of two witnesses.
V MATHEW MEEHAN. Witn'esses:
GUY M. Toznn, W. O. THURsToN.
warming
US187661D Improvement in pet-cocks for steam-engines Expired - Lifetime US187661A (en)

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