GB848731A - Improvements in or relating to sheet feeding devices for platen printing presses - Google Patents
Improvements in or relating to sheet feeding devices for platen printing pressesInfo
- Publication number
- GB848731A GB848731A GB5991/58A GB599158A GB848731A GB 848731 A GB848731 A GB 848731A GB 5991/58 A GB5991/58 A GB 5991/58A GB 599158 A GB599158 A GB 599158A GB 848731 A GB848731 A GB 848731A
- Authority
- GB
- United Kingdom
- Prior art keywords
- suction
- bar
- sheets
- passage
- platen
- 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
- B41F—PRINTING MACHINES OR PRESSES
- B41F1/00—Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed
- B41F1/26—Details
- B41F1/28—Sheet-conveying, -aligning or -clamping devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
848,731. Feeding sheets; platen printing machines. SCHNELLPRESSENFABRIK AKTIENGESELLSCHAFT HEIDELBERG. Feb. 25, 1958 [Dec. 24, 1957], No. 5991/58. Classes 100(1) and 100(2) In a sheet feeding apparatus for a platen printing press wherein a vertically reciprocating suction bar separates sheets from the top of a pile and an intermittently rotating gripper bar transfers the separated sheets to the platen, control means is provided whereby the source of suction to the suction separator bar cannot be cut off, so that the separated sheets are still held in contact with the suction bar during their transfer to the platen by the gripper bar, and are thus kept taut. The control means facilitates a more speedy feeding of flimsy sheets which would be creased when fed at high speed in a press where suction to the suction separator bar is cut off immediately the sheets are gripped by the gripper bar. As shown, the press 1 has an oscillating platen 2 and a vertical forme 9, and a pile of sheets 5 is supported by a table 4 mounted in a frame bracket 3. Sheets are separated from the pile by a vertically reciprocating suction bar 6 provided with nozzles 7, and they are transferred to the platen 2 by a rotating gripper 8 mounted thereon. The suction bar 6 is reciprocated by a cam-controlled lever 10, which also reciprocates a control member 11, Fig. 3, having a roller 17 thereon which runs over a cam face 18 on the press to control the opening and closing of a flap valve 15. When the valve 15 is closed, suction is established at the suction bar 6 through a pipe 12, a passage 24 in the member 11, and a pipe 13. When the valve 15 is open, normally the. passage 24 is open to atmosphere through a passage 14 in the member 11, and thus the suction bar 6 is rendered inoperative : this occurs, when feeding normal sheets, when the gripper 8 takes a sheet from the suction bar. When feeding flimsy sheets, a slide 23 can be moved manually to close the passage 14 to render the valve 15 inoperative, in which case suction is always established at the suction bar 6. A further slide 20 can be moved manually to open the passage 24 to atmosphere through a passage 19 to render the suction oar 6 inoperative. The control cam 18 or the roller 17 may be moved or adjusted into an inoperative position by a control member, so that the valve 15 is not actuated.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE848731X | 1957-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB848731A true GB848731A (en) | 1960-09-21 |
Family
ID=6775674
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5991/58A Expired GB848731A (en) | 1957-12-24 | 1958-02-25 | Improvements in or relating to sheet feeding devices for platen printing presses |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB848731A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3144825A (en) * | 1961-04-08 | 1964-08-18 | Schnellpressenfab Heidelberg | Apparatus for improving sheet delivery on automatic platen machines |
-
1958
- 1958-02-25 GB GB5991/58A patent/GB848731A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3144825A (en) * | 1961-04-08 | 1964-08-18 | Schnellpressenfab Heidelberg | Apparatus for improving sheet delivery on automatic platen machines |
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