GB672695A - Improvements in web-tensioning mechanism for use on printing machines - Google Patents
Improvements in web-tensioning mechanism for use on printing machinesInfo
- Publication number
- GB672695A GB672695A GB697549A GB697549A GB672695A GB 672695 A GB672695 A GB 672695A GB 697549 A GB697549 A GB 697549A GB 697549 A GB697549 A GB 697549A GB 672695 A GB672695 A GB 672695A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tension
- cam
- pulley
- march
- nut
- 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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
- B65H23/08—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle acting on web roll being unwound
- B65H23/085—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle acting on web roll being unwound and controlling web tension
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
672,695. Automatic web-tension control systems. HOE & CO., Ltd., R. March 14, 1950 [March 14, 1949], No. 6975/49. Class 38 (iv). In an automatic web-tensioning system comprising a jockey-pulley operating a two-way switch controlling a reversible brake adjusting motor, the datum-tension is adjusted by a nut and screw mechanism 22 which rocks a plate 19 carrying the pivot 26 for the switch-actuating cam 32. The cam 32 is rocked by a link 29 connected to the jockey pulley, Fig. 1 (not shown), an bears on the roller end 33 of a spring- loaded moving contact carrier 35 adapted to bridge fixed contacts 37 or 38. Tension adjustment may be made by a handle 53 or remotely by switches controlling a motor, Fig. 7 (not shown), belt driving the pulley 24<SP>1</SP>. A mechanical limit stop prevents jamming of the nut and screw mechanism at the limit of travel, Fig. 5 (not shown). A potentiometer 50 moved by a linkage 46 ... 48 from the cam 32 may be used to provide a remote electrical indication of the tension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB697549A GB672695A (en) | 1949-03-14 | 1949-03-14 | Improvements in web-tensioning mechanism for use on printing machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB697549A GB672695A (en) | 1949-03-14 | 1949-03-14 | Improvements in web-tensioning mechanism for use on printing machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB672695A true GB672695A (en) | 1952-05-28 |
Family
ID=9824259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB697549A Expired GB672695A (en) | 1949-03-14 | 1949-03-14 | Improvements in web-tensioning mechanism for use on printing machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB672695A (en) |
-
1949
- 1949-03-14 GB GB697549A patent/GB672695A/en not_active Expired
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