GB1251320A - - Google Patents
Info
- Publication number
- GB1251320A GB1251320A GB1251320DA GB1251320A GB 1251320 A GB1251320 A GB 1251320A GB 1251320D A GB1251320D A GB 1251320DA GB 1251320 A GB1251320 A GB 1251320A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- cylinders
- play
- rotation
- clutch
- 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
- B41F13/00—Common details of rotary presses or machines
- B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
- B41F13/56—Folding or cutting
- B41F13/62—Folding-cylinders or drums
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
1,251,320. Rotary folders. POLYGRAPH LEIPZIG VEB. 9 July, 1970, No. 33429/70. Heading B8R. A rotary folder for printing machines comprises a cylinder (13), Fig. 3 (not shown), having a protruding folding blade (17) which cooperates with a movable flap (10) and a fixed flap stop (11) on a cylinder 1, the cylinders 1, (13) being drivably inter-connected by a dog clutch 7 having bevelled dogs 6 and associated apertures 5 so that during reverse rotation of the cylinders 1, (13), e.g. during a printing machine cycle, the clutch may be opened to its limit of 2/3 of the length of the dogs to introduce play into the drive of cylinder 1, which play is taken up by a torsion element, e.g. a spring 9 connected between the cylinder 1 and its shaft 4, to urge the cylinder 1 to lag behind the rotation of cylinder (13), thereby counteracting any lag in the rotation of cylinder (13) due to play in the reverse drive, e.g. due to means of gears, and preventing contact between the folding blade (17) and fixed flap stop (11) which might cause damage. The clutch may be actuated by an electromagnet, a pneumatic, or an hydraulic motor, in dependence upon the control current for the forward and reverse movement of the cylinders.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3342970 | 1970-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1251320A true GB1251320A (en) | 1971-10-27 |
Family
ID=10352849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1251320D Expired GB1251320A (en) | 1970-07-09 | 1970-07-09 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1251320A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4275239A (en) * | 1977-10-28 | 1981-06-23 | Ciba-Geigy Corporation | 1,10-Dialkyl-1,10-decamethylenediamines |
-
1970
- 1970-07-09 GB GB1251320D patent/GB1251320A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4275239A (en) * | 1977-10-28 | 1981-06-23 | Ciba-Geigy Corporation | 1,10-Dialkyl-1,10-decamethylenediamines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |