GB198686A - Incandescent safety lamps for mines - Google Patents

Incandescent safety lamps for mines

Info

Publication number
GB198686A
GB198686A GB14448/23A GB1444823A GB198686A GB 198686 A GB198686 A GB 198686A GB 14448/23 A GB14448/23 A GB 14448/23A GB 1444823 A GB1444823 A GB 1444823A GB 198686 A GB198686 A GB 198686A
Authority
GB
United Kingdom
Prior art keywords
piston
reservoir
barrel
rod
valve
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
Application number
GB14448/23A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOUIS ERNEST FRANCOIS FERRETTE
Original Assignee
LOUIS ERNEST FRANCOIS FERRETTE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LOUIS ERNEST FRANCOIS FERRETTE filed Critical LOUIS ERNEST FRANCOIS FERRETTE
Publication of GB198686A publication Critical patent/GB198686A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L23/00—Non-electric hand-lamps for miners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)

Abstract

198,686. Ferrette, L. E. F. Feb. 23, 1921, [Convention date]. Oil reservoirs.-The air pump in the reservoir of a miners' incandescent safety lamp is provided with means for preventing an excessive pressure in the reservoir. The pump illustrated comprises a piston 51 and a tubular piston-rod 46 reciprocable in a barrel 44 which is arranged in the lamp reservoir 1 and is surrounded by a protecting tube 63. On the inward stroke of the piston the operator places his thumb over the opening in the piston-rod and air is forced through a spring-pressed valve 49 in a valve seat 56 into a chamber in the barrel 44 between the seat 56 and a diaphragm 55, when the piston contacts with a tail-piece 60 on the valve 49. This chamber communicates with the reservoir through ports 54, 62 formed in the barrel 44 and tube 63 respectively. When the reservoir pressure exceeds a predetermined limit, the air escapes through a spring-pressed valve 58 into a chamber in the barrel 44 between the valve seat 57 and the diaphragm 55 and then escapes through a bye-pass 61 and the hollow piston-rod 46 into the atmosphere on the return stroke. In the innermost position of the piston the operating button 47 on the piston rod enters a recess in a disc member 50 closing the barrel body 44.
GB14448/23A 1921-02-23 1922-02-22 Incandescent safety lamps for mines Expired GB198686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR198686X 1921-02-23

Publications (1)

Publication Number Publication Date
GB198686A true GB198686A (en) 1923-06-22

Family

ID=8879793

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14448/23A Expired GB198686A (en) 1921-02-23 1922-02-22 Incandescent safety lamps for mines

Country Status (1)

Country Link
GB (1) GB198686A (en)

Similar Documents

Publication Publication Date Title
US2746425A (en) Automatic return air piston and cylinder device
GB658390A (en) Improved hydraulic shock absorber
US2539292A (en) Pressure booster
US2580851A (en) Master cylinder relief valve
GB198686A (en) Incandescent safety lamps for mines
US2384824A (en) Lubricating device
US2343900A (en) Compound hydraulic brake compressor
US1253976A (en) Double-acting air-pump.
GB892201A (en) An acoustic warning device for attachment to the valve of a pneumatic tyre to indicate loss of pressure
US1593188A (en) Master cylinder for hydraulic brakes
US1918025A (en) Brake valve
US2486124A (en) Air compressor valve device
SU47187A1 (en) Device for signaling excessive as well as insufficient air pressure in the chamber of a pneumatic tire
GB630577A (en) Improvements in and relating to hydraulic master cylinders
GB571885A (en) Improvements in or relating to valve tappets for internal combustion engines
US2319642A (en) Steam control system for locomotive cylinders and steam chests
US2608062A (en) Hydraulic master cylinder assembly
GB226804A (en) An improved automatic inflator for operation by an internal combustion engine
GB187192A (en) Improvements in or relating to safety devices for machine guns
GB667701A (en) Improvements in shock absorbers
GB1347264A (en) Valve actuator operated by pressurised fluid
US2000482A (en) Die oiler
US1067811A (en) Pump.
US1449130A (en) Fountain pen
SU26925A1 (en) Device for braking the motor carriage when the air chamber is infused with pneumatics