GB183651A - Improvements in bed and cylinder printing machines - Google Patents
Improvements in bed and cylinder printing machinesInfo
- Publication number
- GB183651A GB183651A GB1518321A GB1518321A GB183651A GB 183651 A GB183651 A GB 183651A GB 1518321 A GB1518321 A GB 1518321A GB 1518321 A GB1518321 A GB 1518321A GB 183651 A GB183651 A GB 183651A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- bed
- machine
- revolution
- impression
- 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
- B41F3/00—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed
- B41F3/02—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed with impression cylinder or cylinders rotating unidirectionally
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
183,651. McInroy, T. June 1, 1921. Cylinder machines.-A cylinder machine of the kind in which the reciprocating bed gears with a freely-mounted wheel on the impression cylinder fitted with pawls which transmit motion to the cylinder under the control of engaging and disengaging mechanism, as described in Specification 136,284, is arranged so that the cylinder rotates continuously by providing a second wheel, which is geared to the bed by a separate transmission gear, and is so constructed that the second wheel takes up the drive as the first wheel is disengaged. The two driving-wheels are arranged at the opposite sides of the cylinder, and in addition to the cam-operated disengaging levers 10, 11, similar to the one described in the Specification referred to above, a second pair 22, 23, are also employed. The application of the invention to the tworevolution press shown in Fig. 3 is such that the impression cylinder A makes a revolution and a quarter while the forme moves from the position F to the position F'. The cylinder is then driven by its second drive at a reduced speed, and rotates for three-quarters of a revolution while the bed returns, and the printed sheet is delivered. The cylinder is raised as the bed returns. If desired, the cylinder may rotate at equal speeds during successive movements of the bed. In a onerevolution machine, part of the impression cylinder is cut away, and in this case the printing movement of the bed may take place while the cylinder rotates through either a half or any fractional part of a revolution, the return being effected during the remaining period. In a twocolour machine in which two printing-surfaces are used, the three revolutions of the cylinder for one multi-colour impression may be so arranged that the outward motion of the bed occupies a period of one revolution and three-quarters, and the return motion the remainder. In this machine the levers 22, 23 are formed as one cam-shaped member pivoted at its centre. In a perfecting machine, the two impression cylinders are geared together, and each rotate continuously in the same direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1518321A GB183651A (en) | 1921-06-01 | 1921-06-01 | Improvements in bed and cylinder printing machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1518321A GB183651A (en) | 1921-06-01 | 1921-06-01 | Improvements in bed and cylinder printing machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB183651A true GB183651A (en) | 1922-08-03 |
Family
ID=10054472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1518321A Expired GB183651A (en) | 1921-06-01 | 1921-06-01 | Improvements in bed and cylinder printing machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB183651A (en) |
-
1921
- 1921-06-01 GB GB1518321A patent/GB183651A/en not_active Expired
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