GB157692A - Improvements in force-pumps - Google Patents
Improvements in force-pumpsInfo
- Publication number
- GB157692A GB157692A GB1893220A GB1893220A GB157692A GB 157692 A GB157692 A GB 157692A GB 1893220 A GB1893220 A GB 1893220A GB 1893220 A GB1893220 A GB 1893220A GB 157692 A GB157692 A GB 157692A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- cam
- pistons
- roller
- pumps
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/047—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being pin-and-slot mechanisms
-
- 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
- F04B3/00—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage
-
- 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
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
- F04B7/045—Two pistons coacting within one cylinder
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
157,692. Tutt, M. W., and Hulburd Engineering Co., Ltd. July 6, 1920. Valveless pumps. - Relates to valveless pumps and consists in employing two pistons in one cylinder, the inner piston reciprocating continuously and the outer piston being held d stationary during the suction and delivery strokes of the inner piston, and being moved with, and by, the inner piston, or its rod, to transfer the charge from the inlet to the delivery port and to return the two pistons ready for another suction stroke. Fig. 1 shows a pump with the pistons at the commencement of a suction stroke. As the piston b descends, the piston a is held by a cam k acting on the roller j until the piston b has completed its suction stroke. The cam then disengages the roller and the boss d of the crosshead h bears on the piston a, so that both pistons descend to bring the charge, which has entered through the inlet e, opposite the delivery port f. The cam l now engages with the roller and holds the piston a, while the piston b rises to deliver the charge through the port f. As the cam disengages the roller, the piston b comes in contact with the other and the two rise together into the positions shown. Fig. 6 shows a modification in which there are two pairs of parallel cylinders, each containing one continuously-moving piston b and two intermittently-moving pistons a all actuated and controlled by a single cross-head h and one cam-plate m. As shown, the arrangement constitutes eight single-acting pumps, but by coupling up the suction ports e, and the delivery ports f of each cylinder, the equivalent of four double-acting pumps is got.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1893220A GB157692A (en) | 1920-07-06 | 1920-07-06 | Improvements in force-pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1893220A GB157692A (en) | 1920-07-06 | 1920-07-06 | Improvements in force-pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB157692A true GB157692A (en) | 1921-01-27 |
Family
ID=10120924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1893220A Expired GB157692A (en) | 1920-07-06 | 1920-07-06 | Improvements in force-pumps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB157692A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0701061A1 (en) * | 1994-09-09 | 1996-03-13 | Brother Kogyo Kabushiki Kaisha | Pump and pump unit and method |
| WO2014207532A1 (en) | 2013-06-25 | 2014-12-31 | Swissinnov Product Sarl | Positive-displacement micropump |
-
1920
- 1920-07-06 GB GB1893220A patent/GB157692A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0701061A1 (en) * | 1994-09-09 | 1996-03-13 | Brother Kogyo Kabushiki Kaisha | Pump and pump unit and method |
| US5639220A (en) * | 1994-09-09 | 1997-06-17 | Brother Kogyo Kabushiki Kaisha | Pump with inlet and outlet simultaneously exposed to pump chamber and method of operating same |
| WO2014207532A1 (en) | 2013-06-25 | 2014-12-31 | Swissinnov Product Sarl | Positive-displacement micropump |
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