GB386830A - Improvements in vacuum operated piston apparatus - Google Patents

Improvements in vacuum operated piston apparatus

Info

Publication number
GB386830A
GB386830A GB9291/32A GB929132A GB386830A GB 386830 A GB386830 A GB 386830A GB 9291/32 A GB9291/32 A GB 9291/32A GB 929132 A GB929132 A GB 929132A GB 386830 A GB386830 A GB 386830A
Authority
GB
United Kingdom
Prior art keywords
pistons
cylinder
port
cylinders
piston
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
GB9291/32A
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.)
National Pneumatic Co Inc
Original Assignee
National Pneumatic Co Inc
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 National Pneumatic Co Inc filed Critical National Pneumatic Co Inc
Publication of GB386830A publication Critical patent/GB386830A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B29/00—Machines or engines with pertinent characteristics other than those provided for in preceding main groups
    • F01B29/02—Atmospheric engines, i.e. atmosphere acting against vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
    • F01B17/02—Engines

Abstract

386,830. Cylinders. NATIONAL PNEUMATIC CO., 420, Lexington Avenue, New York, U.S.A. March 31, 1932, No. 9291. Convention date, April 9, 1931. [Class 122 (i).] A pneumatic door-operating unit has two pistons working conjointly in one cylinder and a device for cushioning the movement at the ends of either stroke. The cylinder A, B contains two pistons T, U connected by the hollow piston-rods O, P. These form the cylinders of pistons G, R, having hollow rods V, W. When the port K is open to suction and the opposite end port open to pressure the pistons T, U with the door - operating member N move to the left. Atmospheric air entering the port 5<1> past the ball valve 9 similarly moves piston G to the left until the rod V engages the cylinder end when the air contained in the cylinder O to the right of the piston will be trapped, only escaping slowly through the restricted port 7, thus cushioning the stroke. Rings Ta, Vc of absorbent material are provided to retain lubricating oil which is introduced into the cylinders through the ports closed by plugs 3, 4.
GB9291/32A 1931-04-09 1932-03-31 Improvements in vacuum operated piston apparatus Expired GB386830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US528742A US1874454A (en) 1931-04-09 1931-04-09 Vacuum engine

Publications (1)

Publication Number Publication Date
GB386830A true GB386830A (en) 1933-01-26

Family

ID=26715447

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9291/32A Expired GB386830A (en) 1931-04-09 1932-03-31 Improvements in vacuum operated piston apparatus

Country Status (3)

Country Link
US (1) US1874454A (en)
FR (1) FR734538A (en)
GB (1) GB386830A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE449267A (en) * 1942-02-20
ITRM20110492A1 (en) * 2011-09-21 2013-03-22 Giampiero Fidotti MOTORE MOSSO FROM THE SUFFICIENT ATMOSPHERIC PRESSURE DIFFERENCE TO OPERATE AN ELECTRIC CURRENT GENERATOR.

Also Published As

Publication number Publication date
FR734538A (en) 1932-10-24
US1874454A (en) 1932-08-30

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