GB1026334A - Means for the rapid starting of a mechanism - Google Patents

Means for the rapid starting of a mechanism

Info

Publication number
GB1026334A
GB1026334A GB906963A GB906963A GB1026334A GB 1026334 A GB1026334 A GB 1026334A GB 906963 A GB906963 A GB 906963A GB 906963 A GB906963 A GB 906963A GB 1026334 A GB1026334 A GB 1026334A
Authority
GB
United Kingdom
Prior art keywords
flywheel
clutch
speed
specified speed
inertia
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
GB906963A
Inventor
Heinrich Zahn
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh GmbH
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 Fernseh GmbH filed Critical Fernseh GmbH
Priority to GB906963A priority Critical patent/GB1026334A/en
Publication of GB1026334A publication Critical patent/GB1026334A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/36—Scanning of motion picture films, e.g. for telecine
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/24—Details of cameras or camera bodies; Accessories therefor with means for separately producing marks on the film, e.g. title, time of exposure

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

1,026,334. Momentum power-storing apparatus; controlling clutches. FERNSEH G.m.b.H. March 7. 1963, No. 9069/63 Headings F2L and F2X. A rapid starting device for a film transport mechanism, which in operation is driven at a specified speed by a synchronous motor (not shown), comprises a flywheel 6, driven at an initial speed substantially greater than the specified speed, and a friction clutch 9 which when engaged connects the flywheel to the drive shaft 8 of the mechanism, the flywheel moment of inertia and initial speed being such that on clutch engagement the mechanism is accelerated to the specified speed as the flywheel decelerates to that speed. Preferably the moment of inertia of the flywheel and its driving means equals the moment of inertia of the mechanism and its motor, and the flywheel initial speed is twice the specified speed. The flywheel 6 is driven through a flexible coupling 2, 4, by a motor 1. The clutch plate 9 is keyed, with some axial freedom, to the shaft 8 and is engaged by the action of a fixed electromagnet 14 on an armature 13 of the clutch. In the clutch control circuit (Fig. 2, not shown) a low voltage D.C. supply charges a capacitor C through a high resistance R. Simultaneously with switching on the synchronous motor of the mechanism, a switch S is closed to discharge the capacitor through the coil 15 of the magnet 14 to engage the clutch. When the capacitor is discharged, the current in coil 15 falls until the clutch spring 11 is able to disengage the clutch, this being arranged to occur just after the mechanism has reached the specified speed.
GB906963A 1963-03-07 1963-03-07 Means for the rapid starting of a mechanism Expired GB1026334A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB906963A GB1026334A (en) 1963-03-07 1963-03-07 Means for the rapid starting of a mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB906963A GB1026334A (en) 1963-03-07 1963-03-07 Means for the rapid starting of a mechanism

Publications (1)

Publication Number Publication Date
GB1026334A true GB1026334A (en) 1966-04-20

Family

ID=9864776

Family Applications (1)

Application Number Title Priority Date Filing Date
GB906963A Expired GB1026334A (en) 1963-03-07 1963-03-07 Means for the rapid starting of a mechanism

Country Status (1)

Country Link
GB (1) GB1026334A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249609A (en) * 1990-11-01 1992-05-13 Cheng Cheng Ming An improved crankshaft apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249609A (en) * 1990-11-01 1992-05-13 Cheng Cheng Ming An improved crankshaft apparatus
GB2249609B (en) * 1990-11-01 1994-05-04 Cheng Cheng Ming A crankshaft assembly

Similar Documents

Publication Publication Date Title
US2386402A (en) Power actuator
US3160128A (en) Electrical drive means for sewing machines or the like and means for stopping said drive means in predetermined positions
US2039714A (en) Electromagnetic clutch
GB1026334A (en) Means for the rapid starting of a mechanism
US3126989A (en) Electromagnetic clutch control arrangement
GB1220242A (en) Improvements in or relating to clutch-brake units
GB1247265A (en) Clutch motor
US3421784A (en) Degaussing circuit for electromagnetic clutch
US3242765A (en) System for the rapid starting of a mechanism
US3227253A (en) Clutch and brake for sewing machine
ES367654A1 (en) Dual speed clutches with brake
US3588558A (en) Magnetic clutch projector drive system
JPS5952135B2 (en) Switching tongue drive device in a letter transport device and switching device equipped with such a drive device
US2105897A (en) Drive fob rotating elements of
GB950437A (en) High speed clutch and brake actuating circuit
US3029327A (en) Remotely controllable rotary switch
GB1393285A (en) Clutches
GB727783A (en) Improvements in apparatus for controlling the attractive force developed in an electromagnet
US2052127A (en) Starting device for internal combustion engines
US2151463A (en) Starting arrangement for internal combustion engines
US2373736A (en) Control gear for electric motor driven mechanisms
GB1126424A (en) A cut-out arrangement for a clutch or a driving machine associated with a clutch
US1120375A (en) Clutch and controller for printing-presses.
US3604792A (en) Single frame cinematic projector
GB608318A (en) Improvements in starting means for internal-combustion engines