GB682485A - Improvements in or relating to pumps - Google Patents
Improvements in or relating to pumpsInfo
- Publication number
- GB682485A GB682485A GB2691550A GB2691550A GB682485A GB 682485 A GB682485 A GB 682485A GB 2691550 A GB2691550 A GB 2691550A GB 2691550 A GB2691550 A GB 2691550A GB 682485 A GB682485 A GB 682485A
- Authority
- GB
- United Kingdom
- Prior art keywords
- block
- cylinder
- hole
- secured
- plunger
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B33/00—Pumps actuated by muscle power, e.g. for inflating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
682,485. Pistons. WHITE'S TYRE PUMPS, Ltd, June 14, 1951 [Nov. 3, 1950; March 30, 1951]. Nos. 26915/50 and 7463 / 51. Class 122(i) [Also in Group XXVIII] In a manually operable air pump of the plunger and cylinder type, the plunger comprises a single block of resiliently deformable material such as a relatively soft rubber compound or sponge rubber, at least that part of the block which engages the wall of the cylinder being barrel shaped or having a spherical curvature so as to diverge from the cylinder wall on both sides of a circumferential zone of contact, the block being mounted between rigid members which are relatively axially movable to apply an adjustable axial pressure to the block and a non-return valve is provided to admit air to the cylinder during the suction stroke of the pump. A spherical block 29 is secured between washers 36, 37 engaged by the head of a bolt 33 and a nut 38 thereon, the bolt being secured to the plunger rod. A hole 34 passes through the block 29 and opens into a flat surface 31 provided by a notch 30. A flap 35 which may be secured to the block or integral therewith covers the hole 34. In a modification the block is not notched and the washer 36 is provided with a hole aligned with the hole 34 and a flap valve is mounted on the outer surface of the washer. In a further modification the suction valve comprises a flap valve mounted on the end plug of the cylinder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2691550A GB682485A (en) | 1950-11-03 | 1950-11-03 | Improvements in or relating to pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2691550A GB682485A (en) | 1950-11-03 | 1950-11-03 | Improvements in or relating to pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB682485A true GB682485A (en) | 1952-11-12 |
Family
ID=10251210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2691550A Expired GB682485A (en) | 1950-11-03 | 1950-11-03 | Improvements in or relating to pumps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB682485A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1103540B (en) * | 1958-04-03 | 1961-03-30 | Maschf Augsburg Nuernberg Ag | Hydraulic power lift, especially for agricultural vehicles |
DE1214957B (en) * | 1956-05-09 | 1966-04-21 | Gunnar Axel Wahlmark | Piston seal |
US4569275A (en) * | 1983-11-23 | 1986-02-11 | Poutrait-Morin | Portable pump for inflating tires, in particular for a bicycle |
GB2341898A (en) * | 1998-06-26 | 2000-03-29 | David John Kay Shaw | Pump with tapered bore |
-
1950
- 1950-11-03 GB GB2691550A patent/GB682485A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1214957B (en) * | 1956-05-09 | 1966-04-21 | Gunnar Axel Wahlmark | Piston seal |
DE1103540B (en) * | 1958-04-03 | 1961-03-30 | Maschf Augsburg Nuernberg Ag | Hydraulic power lift, especially for agricultural vehicles |
US4569275A (en) * | 1983-11-23 | 1986-02-11 | Poutrait-Morin | Portable pump for inflating tires, in particular for a bicycle |
GB2341898A (en) * | 1998-06-26 | 2000-03-29 | David John Kay Shaw | Pump with tapered bore |
GB2341898B (en) * | 1998-06-26 | 2001-10-10 | David John Kay Shaw | Pump |
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