GB539160A - Improvements relating to hydraulic presses - Google Patents
Improvements relating to hydraulic pressesInfo
- Publication number
- GB539160A GB539160A GB3731/40A GB373140A GB539160A GB 539160 A GB539160 A GB 539160A GB 3731/40 A GB3731/40 A GB 3731/40A GB 373140 A GB373140 A GB 373140A GB 539160 A GB539160 A GB 539160A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ram
- valve
- cylinder
- spring
- sleeve
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Reciprocating Pumps (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Press Drives And Press Lines (AREA)
Abstract
539,160. Embossing machines. TURNER TANNING MACHINERY CO., Ltd., and SCHETTLER, G. A. Feb. 28, 1940, No. 3731. [Class 100 (ii)] [Also in Group XXIX] A hydraulic press such as is used for smooth plating or embossing leather of the kind in which the main ram 2 is operated to close on the work by an auxiliary ram 4 working in an auxiliary cylinder 3 is constructed with a byepass valve 16 for opening up connection between the two cylinders when high-pressure liquid is admitted to the cylinder 1 through a pipe 12 which is preferably fitted with a valve device as described in Specification 539,159, [Group XXIX]. The valve 16 is attached to a spring-pressed plunger 15 which slides in a cylinder 14 arranged in a stepped recess in the main, ram 2, a sleeve 17 being also secured to the recess by means of 'bolts 20 which also secure the cylinder 14 in place. The sleeve 17 is formed with ports 21 which are normally closed by the valve 16 which remains closed during the initial upward movement of the ram 4. A washer 28 ensures a watertight engagement of the ram 4 with the sleeve 17, and the spring 23 keeps the valve 16 closed during this initial movement. When the main pressure is put on, the plunger 15 is raised by the fluid pressure and the valve moves to the position indicated in Fig. 3 thus opening up connection between the cylinders 1, 3. The recess in which the spring 23 is arranged is fitted with a vent passage 24, and the ram is fitted with spring buffers 9. A sealing ring 25 of soft copper makes a tight joint with the upper ends of the cylinder 14 and the plunger 15 when in its raised position Fig. 3. A vent passage 29 may be provided to assist retraction. The press is adapted to deal readily with work of various thicknesses.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3731/40A GB539160A (en) | 1940-02-28 | 1940-02-28 | Improvements relating to hydraulic presses |
US353888A US2290361A (en) | 1940-02-28 | 1940-08-23 | Press |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3731/40A GB539160A (en) | 1940-02-28 | 1940-02-28 | Improvements relating to hydraulic presses |
Publications (1)
Publication Number | Publication Date |
---|---|
GB539160A true GB539160A (en) | 1941-08-29 |
Family
ID=9763879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3731/40A Expired GB539160A (en) | 1940-02-28 | 1940-02-28 | Improvements relating to hydraulic presses |
Country Status (2)
Country | Link |
---|---|
US (1) | US2290361A (en) |
GB (1) | GB539160A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2456690A (en) * | 1942-08-28 | 1948-12-21 | United Shoe Machinery Corp | Fluid-pressure-operated mechanism |
US2425071A (en) * | 1944-01-11 | 1947-08-05 | Herbert E Page | Remote control apparatus for hydraulic systems |
US2729063A (en) * | 1954-05-14 | 1956-01-03 | Manco Mfg Co | Hydraulic tool |
-
1940
- 1940-02-28 GB GB3731/40A patent/GB539160A/en not_active Expired
- 1940-08-23 US US353888A patent/US2290361A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2290361A (en) | 1942-07-21 |
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