GB661704A - Improvements in or relating to safety devices for the automatic feed mechanism for feeding sheets into printing machines - Google Patents
Improvements in or relating to safety devices for the automatic feed mechanism for feeding sheets into printing machinesInfo
- Publication number
- GB661704A GB661704A GB10524/49A GB1052449A GB661704A GB 661704 A GB661704 A GB 661704A GB 10524/49 A GB10524/49 A GB 10524/49A GB 1052449 A GB1052449 A GB 1052449A GB 661704 A GB661704 A GB 661704A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- sheets
- plates
- condenser
- fed
- 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
- B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
- B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
- B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
- B65H7/12—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to double feed or separation
- B65H7/125—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to double feed or separation sensing the double feed or separation without contacting the articles
Landscapes
- Sheets, Magazines, And Separation Thereof (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
661,704. Sheet feeding apparatus. SOC. NEBIOLO. April 20, 1949 [April 28, 1948], No. 10524/49. Class 100 (i). In an automatic apparatus for feeding sheets to a printing-machine, in order to prevent more than one sheet being fed at a time, or prevent more than the desired number of superposed sheets being fed together, according to the type of feed, the sheets are passed between two conductive plates 2, 3 which constitute the plates of a condenser which is connected in a circuit sensitive to capacity variations and which controls a member, e.g. a switch, on which the operation of the machine depends. As shown, a metal plate 2 is inset on a non- conductive feed board 1, and an opposed metal plate 3 is carried by an adjustable means 4, 6 in an arm 7 secured on a rod 8. These plates are arranged in a detector circuit B including a triod valve, variable condenser, reaction coil, etc., and a relay which controls a switch in the control circuit of the machine. When an extra sheet is fed, the increase in capacity of the condenser 2, 3 causes a rapid excitation of the oscillations of the valve, a corresponding drop of anode current, and subsequent release of the relay controlling the switch.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT661704X | 1948-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB661704A true GB661704A (en) | 1951-11-28 |
Family
ID=11298308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10524/49A Expired GB661704A (en) | 1948-04-28 | 1949-04-20 | Improvements in or relating to safety devices for the automatic feed mechanism for feeding sheets into printing machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB661704A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1092488B (en) * | 1959-06-24 | 1960-11-10 | Frankfurter Maschb A G Vorm Po | Device for the electronic control of missing or multiple sheet pick-up on gathering machines of any kind |
| DE1127917B (en) * | 1958-09-24 | 1962-04-19 | Linotype Machinery Ltd | Sheet counter for printing presses |
| DE1146075B (en) * | 1961-08-12 | 1963-03-28 | Roland Offsetmaschf | Control device for sheet feeder |
| DE1163344B (en) * | 1960-02-09 | 1964-02-20 | Wilhelm Ritzerfeld | Rotation multiplier for full-page, line or section-wise printing of mirror image printing forms on sheets, cards or the like |
| US3182301A (en) * | 1960-11-21 | 1965-05-04 | Harris Intertype Corp | Multiple sheet detector |
| DE1200842B (en) * | 1962-07-06 | 1965-09-16 | Parnall & Sons Ltd | Arrangement for the detection of double sheets at the exit of a sheet separation device |
| DE1238492B (en) * | 1966-02-14 | 1967-04-13 | R & M Leuze | Device for shutting down a sheet processing machine when double sheets or imperfections occur |
| DE3015297A1 (en) * | 1979-05-16 | 1980-11-27 | Polygraph Leipzig | Double sheet control for rotary printer - with measuring head coupled via pushbutton to pulse controlled blocking device for control of laying out |
| US4243216A (en) * | 1979-06-11 | 1981-01-06 | Ncr Canada Ltd. - Ncr Canada Ltee | Double document detection system |
| DE9206076U1 (en) * | 1992-05-07 | 1993-09-09 | Heinrich Hermann GmbH + Co, 70327 Stuttgart | Labeling machine |
-
1949
- 1949-04-20 GB GB10524/49A patent/GB661704A/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1127917B (en) * | 1958-09-24 | 1962-04-19 | Linotype Machinery Ltd | Sheet counter for printing presses |
| DE1092488B (en) * | 1959-06-24 | 1960-11-10 | Frankfurter Maschb A G Vorm Po | Device for the electronic control of missing or multiple sheet pick-up on gathering machines of any kind |
| DE1163344B (en) * | 1960-02-09 | 1964-02-20 | Wilhelm Ritzerfeld | Rotation multiplier for full-page, line or section-wise printing of mirror image printing forms on sheets, cards or the like |
| US3182301A (en) * | 1960-11-21 | 1965-05-04 | Harris Intertype Corp | Multiple sheet detector |
| DE1146075B (en) * | 1961-08-12 | 1963-03-28 | Roland Offsetmaschf | Control device for sheet feeder |
| DE1200842B (en) * | 1962-07-06 | 1965-09-16 | Parnall & Sons Ltd | Arrangement for the detection of double sheets at the exit of a sheet separation device |
| DE1238492B (en) * | 1966-02-14 | 1967-04-13 | R & M Leuze | Device for shutting down a sheet processing machine when double sheets or imperfections occur |
| DE3015297A1 (en) * | 1979-05-16 | 1980-11-27 | Polygraph Leipzig | Double sheet control for rotary printer - with measuring head coupled via pushbutton to pulse controlled blocking device for control of laying out |
| US4243216A (en) * | 1979-06-11 | 1981-01-06 | Ncr Canada Ltd. - Ncr Canada Ltee | Double document detection system |
| DE9206076U1 (en) * | 1992-05-07 | 1993-09-09 | Heinrich Hermann GmbH + Co, 70327 Stuttgart | Labeling machine |
| US5421946A (en) * | 1992-05-07 | 1995-06-06 | Heinrich Hermann Gmbh & Co. | Electromagnetic label sensor having surface following member |
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