GB696768A - Improvements relating to machines for graining lithographic plates - Google Patents
Improvements relating to machines for graining lithographic platesInfo
- Publication number
- GB696768A GB696768A GB2270450A GB2270450A GB696768A GB 696768 A GB696768 A GB 696768A GB 2270450 A GB2270450 A GB 2270450A GB 2270450 A GB2270450 A GB 2270450A GB 696768 A GB696768 A GB 696768A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strips
- frame
- graining
- secured
- sub
- 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
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N3/00—Preparing for use and conserving printing surfaces
- B41N3/04—Graining or abrasion by mechanical means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drying Of Solid Materials (AREA)
Abstract
696,768. Graining lithographic plates. CARTER, Ltd., J. W., & T. H., and RAINES & PORTER, Ltd. Sept. 13, 1951 [Sept. 15, 1950], No. 22704/50. Class 60. In a machine for graining lithographic plates, of the kind in which a table carrying the plate is caused to perform circular movements while a number of graining balls rest on the plate, the plate is carried by a table 1 which is connected by a flexible metal connection to a fabricated sub-frame resting on ball-bearings 2 running in recesses in the machine frame 3, so that the table may be tipped about the flexible connection to allow the graining balls to run into a container 6. A hydraulic gear 5 is provided for tipping the table. The table has a flat upper surface 11 with stiffeners 12 secured underneath. At one end of each stiffener a vertical strip 16 is provided, and the two outer stiffeners have horizontal strips 17 provided thereon. The sub-frame consists of longitudinal members 18, 19 and transverse members 20, under which is secured a member 20a which is acted upon by cranks 4 for driving the table. The strips 16 are secured to strips 30 on the sub-frame by spring steel plates 26. Further spring-steel plates 21, 22 are secured at one side to the subframe member 18 and at the other to the horizontal strips 17 on the table. The spring-steel strip may consist of two or more laminations. Guides may be provided at the end of the frame remote from the steel strips.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2270450A GB696768A (en) | 1950-09-15 | 1950-09-15 | Improvements relating to machines for graining lithographic plates |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2270450A GB696768A (en) | 1950-09-15 | 1950-09-15 | Improvements relating to machines for graining lithographic plates |
Publications (1)
Publication Number | Publication Date |
---|---|
GB696768A true GB696768A (en) | 1953-09-09 |
Family
ID=10183748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2270450A Expired GB696768A (en) | 1950-09-15 | 1950-09-15 | Improvements relating to machines for graining lithographic plates |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB696768A (en) |
-
1950
- 1950-09-15 GB GB2270450A patent/GB696768A/en not_active Expired
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