GB668205A - Improvements in or relating to scanning devices for register regulation - Google Patents
Improvements in or relating to scanning devices for register regulationInfo
- Publication number
- GB668205A GB668205A GB22224/49A GB2222449A GB668205A GB 668205 A GB668205 A GB 668205A GB 22224/49 A GB22224/49 A GB 22224/49A GB 2222449 A GB2222449 A GB 2222449A GB 668205 A GB668205 A GB 668205A
- Authority
- GB
- United Kingdom
- Prior art keywords
- impulse
- line
- electromagnet
- photo
- mirror
- 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
- B65H23/046—Sensing longitudinal register of web
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/02—Conveying or guiding webs through presses or machines
- B41F13/025—Registering devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
668,205. Photo-electric control systems. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Aug. 26, 1949 [Sept. 25, 1948], No. 22224/49. Class 40 (iii). [Also in Group XXXV] A scanning device for use with a photoelectric system for controlling the position of a movable web material 1, such as paper or textile, having a longitudinally printed black line 6 thereon, comprises a mirror 29 attached to the oscillating armature 28 of an electromagnet 22, causing the light from a source 30 to produce an impulse in a photo-cell 31 each time the light beam traverses the line 6. In the embodiment shown, the amplified impulse is fed to the grids of two thyratron valves 12, 13 whose anodes are fed with synchronous A.C. so that with proper registration of the material 1 on its rollers 3, 4, 5, the impulses coincide with zero anode voltages, and the valves 12, 13 remain non-conductive, but when the web deviates, the impulse moves relative to the anode voltages and causes one valve 12 or 13 to become conductive for part of a half-cycle, producing current in one of the two opposed field windings 9 or 10, and motor 8 will drive shaft 7 to produce re-registration of the material 1. The electromagnet 22 of the scanning device comprises two coils 23, 24, each energized in alternate half-cycles from the motor circuit A.C. supply 25 by rectifiers 26, 27, so that the spring-loaded armature 28 is attracted to each pole alternately, causing the mirror 29 to reflect the light beam from one side of line 6 to the other in each half-cycle.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US668205XA | 1948-09-25 | 1948-09-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB668205A true GB668205A (en) | 1952-03-12 |
Family
ID=22071924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22224/49A Expired GB668205A (en) | 1948-09-25 | 1949-08-26 | Improvements in or relating to scanning devices for register regulation |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB668205A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1108480B (en) * | 1954-02-24 | 1961-06-08 | West Point Mfg Company | Method and device for determining defects in running yarns |
DE1170510B (en) * | 1957-11-06 | 1964-05-21 | Siemens Ag | Processing machine, in particular a cutting machine |
US3784184A (en) * | 1970-08-05 | 1974-01-08 | G Stumpf | Cloth folding machine having means for control of the edges of cloth unwound from a roll |
EP0123049A2 (en) * | 1983-02-23 | 1984-10-31 | Gerhard Klemm | Printing machine with a pressure cylinder, in particular a screen printer |
-
1949
- 1949-08-26 GB GB22224/49A patent/GB668205A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1108480B (en) * | 1954-02-24 | 1961-06-08 | West Point Mfg Company | Method and device for determining defects in running yarns |
DE1170510B (en) * | 1957-11-06 | 1964-05-21 | Siemens Ag | Processing machine, in particular a cutting machine |
US3784184A (en) * | 1970-08-05 | 1974-01-08 | G Stumpf | Cloth folding machine having means for control of the edges of cloth unwound from a roll |
EP0123049A2 (en) * | 1983-02-23 | 1984-10-31 | Gerhard Klemm | Printing machine with a pressure cylinder, in particular a screen printer |
EP0123049A3 (en) * | 1983-02-23 | 1985-12-27 | Gerhard Klemm | Printing machine with a pressure cylinder, in particular a screen printer |
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