GB685363A - Improvements in web printing machines - Google Patents

Improvements in web printing machines

Info

Publication number
GB685363A
GB685363A GB1517048A GB1517048A GB685363A GB 685363 A GB685363 A GB 685363A GB 1517048 A GB1517048 A GB 1517048A GB 1517048 A GB1517048 A GB 1517048A GB 685363 A GB685363 A GB 685363A
Authority
GB
United Kingdom
Prior art keywords
web
motor
roll
arm
belt
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
Application number
GB1517048A
Inventor
Claud Edward Frederick Willis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
R Hoe and Co Ltd
R Hoe and Co Inc
Original Assignee
R Hoe and Co Ltd
R Hoe and Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by R Hoe and Co Ltd, R Hoe and Co Inc filed Critical R Hoe and Co Ltd
Priority to GB1517048A priority Critical patent/GB685363A/en
Publication of GB685363A publication Critical patent/GB685363A/en
Expired legal-status Critical Current

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

685,363. Automatic tension control systems. HOE & CO., Ltd., R. June 7, 1949 [June 4, 1948], No. 15170/48. Class 38 (iv). In a web tension control apparatus the degree of wrap of a retarding belt round the web-roll is determined by the web tension, and the motor controlling the application of the belt is supplied from an impulse generating network. As shown, Fig. 1, the web 4 is unrolled from roll 3 and its tension detected by floating roller 6 supported on arm 13 mounted to rock about centre 14. Arm 13 controls, through linkage 15, a switch 16, Fig. 2, which determines the direction of motion of motor 17. Roll 3 is retarded by the endless belt 7, which is driven by gearing 11 at a speed 2 per cent lower than the speed of web 4 and the extent of wrap of the belt round 3, and therefore the braking effect, is determined by the adjustment of arm 12 by the motor 17 about axis 18. The forward and reverse coils 24, 25 of the motor are energized respectively by closure of contacts 20, 21 of switch 16 and the supply is rendered intermittent by relay 30, the coil G1 of which is energized periodically from the impulsing network A. In the latter, the condenser C is alternately charged and discharged by the contact E moved by coil D connected across C; the contact H, in series with G1 is moved with E.
GB1517048A 1948-06-04 1948-06-04 Improvements in web printing machines Expired GB685363A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1517048A GB685363A (en) 1948-06-04 1948-06-04 Improvements in web printing machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1517048A GB685363A (en) 1948-06-04 1948-06-04 Improvements in web printing machines

Publications (1)

Publication Number Publication Date
GB685363A true GB685363A (en) 1953-01-07

Family

ID=10054264

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1517048A Expired GB685363A (en) 1948-06-04 1948-06-04 Improvements in web printing machines

Country Status (1)

Country Link
GB (1) GB685363A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019030161A1 (en) * 2017-08-11 2019-02-14 Voith Patent Gmbh Unwinding station

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019030161A1 (en) * 2017-08-11 2019-02-14 Voith Patent Gmbh Unwinding station

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