US584963A - Automatic train-pipe vent-valve for air-brakes - Google Patents

Automatic train-pipe vent-valve for air-brakes Download PDF

Info

Publication number
US584963A
US584963A US584963DA US584963A US 584963 A US584963 A US 584963A US 584963D A US584963D A US 584963DA US 584963 A US584963 A US 584963A
Authority
US
United States
Prior art keywords
valve
air
brakes
cam
stem
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Publication date
Application granted granted Critical
Publication of US584963A publication Critical patent/US584963A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • B61L3/04—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling mechanically

Definitions

  • WITNESSES IIVlE/VTOR Qua ATTORNEYS.
  • Stop systems for the protection of railways in which by means of a track member socured close to the track and a train member secured upon the train cooperating with the track members the train-pipe of an air-brake system might be vented and the brakes set when the train member was brought in contact with the track member are well known, such a system in which the track member is an inclined plate being shown in my Patent No. 534,244, dated February 12, 1895.
  • My present invention is an improved train member for use in such a combination.
  • A is a frame-plate having tends to return the valve to its seat when forced off it.
  • valve-stem D serves as a support for valve-stem D, and also serves as an abutment for the detent E.
  • the free end of valve-stem D is suitably beveled and is nearly in contact with the camsurface of a cam-nut G, which is supported by a bracket a, fast to frame-plate A.
  • cam-nut G consists of a nut proper carrying the frustum of a cone.
  • the contact-stem H is supported by the cam-nut G, being guided at its lower end by a bracket a fast to frameplate A, and having a feather working in a groove in bracket a to prevent the turning of the contact-stem.
  • the cam-nut G and contact-stem H are connected together by screwthreads upon the stem H and within the nut G.
  • a roll h Upon the bottom of stem H is mounted a roll h, which is designed to come in contact with the cam-surface of the track member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Description

(Np Model.
y B. 0. ROWELL. AUTOMATIC TRAIN PIPE VENT VALVE FOR AIR BRAKES. No. 584,963. Patented June 22, 1897.
WITNESSES: IIVlE/VTOR Qua ATTORNEYS.
' n1: ucmms mm: w. Flo-mum NM-NMTOI ma UNITED STATES PATENT OFFICE.
BENTON O. ROWELL, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE ROWVELL-POTTER SAFETY STOP COMPANY, OF PORTLAND, MAINE.
AUTOMATIC TRAIN-PIPE VENT-VALVE FOR AIR-BRAKES.
SPECIFICATION forming part of Letters Patent No. 584,963, dated June 22, 1897.
Application filed October 12,1896. Serial ITO- 608,548. (No model.) i
To ctZZ whom it may concern.-
. Be it known that I, BENTON O. ROWELL, of Boston, Suifolk county, Massachusetts, have invented an Improved Automatic Train-Pipe Vent-Valve for Air-Brake Systems, of which the following is a specification, reference being had to the accompanying drawings, in which- Figure 1 is a side elevation of my mechanism. Fig. 2 is a plan.
Stop systems for the protection of railways in which by means of a track member socured close to the track and a train member secured upon the train cooperating with the track members the train-pipe of an air-brake system might be vented and the brakes set when the train member was brought in contact with the track member are well known, such a system in which the track member is an inclined plate being shown in my Patent No. 534,244, dated February 12, 1895.
My present invention is an improved train member for use in such a combination.
In the drawings, A is a frame-plate having tends to return the valve to its seat when forced off it.
E is a detent fulorumed upon a lug fast to the valve-stem, the fulcrum being below the line of the stem and the end of spring (2 pressing upon one end of the detent E and tending always to throw the other end of the detent down.
F serves as a support for valve-stem D, and also serves as an abutment for the detent E. The free end of valve-stem D is suitably beveled and is nearly in contact with the camsurface of a cam-nut G, which is supported by a bracket a, fast to frame-plate A. The
cam-nut G consists of a nut proper carrying the frustum of a cone. The contact-stem H is supported by the cam-nut G, being guided at its lower end by a bracket a fast to frameplate A, and having a feather working in a groove in bracket a to prevent the turning of the contact-stem. The cam-nut G and contact-stem H are connected together by screwthreads upon the stem H and within the nut G. Upon the bottom of stem H is mounted a roll h, which is designed to come in contact with the cam-surface of the track member.
The operation of the mechanism is as follows: When the roll h strikes the cam-surface of the track member, the stem H is forced up, and the cam-surface of nut G forces valvestem D and its valve back against the force of the air contained in the train-pipe and of spring d, detent E dropping under the force of gravity and of spring 01 and preventing the valve closing again. When it is desired to close the valve again, the detent E is tripped and spring 01 returns the valve to its seat.
It will be obvious that for various reasons some degree of adjustability of the contactstem H is highly desirable, as the adjustment of the track members may vary upon different sections of railway, and also that the mechanism when first applied to an engine may be secured permanently and the adj ustment be made afterward. My present invention provides this adj ustability by means of the cam-nut G, the turning of the cam-nut raising or lowering the contact-stem H, as may be desired, the cone shape of the cam-surface of cam-nut G always presenting a proper face to the cam-surface of valve-stem D.
What I claim is- The automatic train-pipe vent-valve above described consisting of a valve; a valve-stem; a detent 5 a screw-threaded contact-stem carrying a cam-nut; that cam-nut and means to support the parts in their proper relation, all organized substantially as described.
BENTON O. ROWELL.
Witnesses:
F. W. BRINCKERHOFF, W. LUXMORE.
US584963D Automatic train-pipe vent-valve for air-brakes Expired - Lifetime US584963A (en)

Publications (1)

Publication Number Publication Date
US584963A true US584963A (en) 1897-06-22

Family

ID=2653633

Family Applications (1)

Application Number Title Priority Date Filing Date
US584963D Expired - Lifetime US584963A (en) Automatic train-pipe vent-valve for air-brakes

Country Status (1)

Country Link
US (1) US584963A (en)

Similar Documents

Publication Publication Date Title
US633228A (en) Brake-actuating device.
US976107A (en) Accident brake appliance.
US1001155A (en) Automatic flange-oiler.
US1626673A (en) Flexible diaphragm device
US775670A (en) Air-brake safety device.
US729034A (en) Railway-brake.
US341573A (en) Samuel h
US669781A (en) Car-brake.
US321971A (en) William b
US190030A (en) Improvement in exhaust-valves for air-brakes
US485703A (en) Sanding device for railway-cars
US1635825A (en) Emergency brake-setting device
US646836A (en) Automatic safety appliance for railways.
US1098270A (en) Safety railroad appliance.
US1399600A (en) Railway safety appliance
US950468A (en) Compound double automatic latch.
US949145A (en) Automatic train-stop.
US575252A (en) Automatic dust valve or shield for couplings of air-brakes
US805420A (en) Mechanism for automatically actuating air-brakes.
US924742A (en) Automatic air-brake appliance.
US1215390A (en) Automatic train-stop mechanism.
US845353A (en) Fluid-pressure brake system.
US1200897A (en) Automatic safety device for locomotives.
US1129204A (en) Valve-controlling mechanism.
US775661A (en) Air-relief valve.