US1856076A - Synchronizing arrangement - Google Patents

Synchronizing arrangement Download PDF

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Publication number
US1856076A
US1856076A US236063A US23606327A US1856076A US 1856076 A US1856076 A US 1856076A US 236063 A US236063 A US 236063A US 23606327 A US23606327 A US 23606327A US 1856076 A US1856076 A US 1856076A
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US
United States
Prior art keywords
energy
amplifier
frequency
tuning fork
fork
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 - Lifetime
Application number
US236063A
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English (en)
Inventor
Karolus August
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.)
RCA Corp
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RCA Corp
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Filing date
Publication date
Application filed by RCA Corp filed Critical RCA Corp
Application granted granted Critical
Publication of US1856076A publication Critical patent/US1856076A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/056—Metal working with shield or hood movements

Definitions

  • the present invention is concerned with an arrangement for synchronizing moving mechanisms for picture transmission or other purposes serving as a means of intelligence transmission. It more particularly relates to the case in which, in transmitter and receiver, synchronization and its maintenance is effected by the aid of time tappers priorly tuned or synchronized with each other, but
  • the present invention obviates the disadvantages and drawbacks above named by providing suitable means to supply the main driving power at both the transmitting and receiving ends of the system.
  • This is accom plished through the use of synchronous main motors roughly adjusted to the proper speed.
  • This energy supply to the auxiliary motor serves as a corrective energy only and furnishes but a small part of the whole driving energy.
  • the amplifier is called upon only to furnish a.
  • apparatus amounts to around watts, only from 3 to 5 watts are needed in the shape of synchronizing alternating current energy.
  • tuning fork 1 by means of induction coi 2 acts upon the grid of tube 3, the plate circuit of which contains the reaction coil t, which maintains the constant oscillation of the fork 1.
  • the synchronousmotor operated atthe end of the output of the cascade amplifier 6, upon the tuning fork frequency, it is desired to couple the amplifier stages, which are assumed to be within the cascade amplifier 6, independently of the oscillator tube 3. This may be accomplished by connecting the input of the cascade 9 amplifier 6 to a separate and distinct induction coil 5 instead of connecting the amplifier input to the plate circuit of the tube 3.
  • the alternating current energy induced in coil 5 when fork 1 oscillates is then amplified to the required watt value and thereupon supplied to the synchronizing motor which furnishes the part of the energy required to insure synchronous state.
  • the simplest plan is to locate the synchronizing motor upon the shaft of the main motor 12, which may, for instance, be of the direct current shuntwound type although any other form of motor may be used, if desired.
  • motor 12 is adjusted roughly to the proper speed.
  • the motor shaft 11 there is mounted atoothed wheel 10 built up from sheet packets, and the teeth of said wheel 10 are passed close to the magnet coils of the electromagnet system 7, 8 and 9.
  • Synchronous running of the shaft 11 with relation to the frequency of 1 can be checked up by the aid of glow-discharge lamp 14; which is supplied with the same frequency as 7 and 8.
  • glow-discharge lamp 14 which is supplied with the same frequency as 7 and 8.
  • the teeth of 10 seem to be stationary as long as synchronism prevails.
  • any other kind of synchronous motor may be employed.
  • tuning fork also any other mechanical oscillator can be used in connection with this invention.
  • a system for supplying energy to a work circuit or the like which includes a mechanical vibrator of constant frequency, a regeneratively coupled thermionic means for driving said mechanical vibrator, an amplifying eans, a separate means for inducing energy only of a frequency corresponding to the actual motion of said vibrator into said am plifier for amplifying the same, and means for supplying the output energy of said amplifier to the work circuit.
  • a system for supplying constant frequency energy to a load circuit or the like comprising a tuning fork of, constant frequency, a regeneratively connected exciter means for said fork, a one-way repeater circuit, independent energy pickup means adjacent said fork for inducing alternating current of a frequency corresponding to the actual vibrational frequency of said tuning fork into said amplifier, a load circuit connected with the output of said amplifier, means for applying said amplified energy to said load circuit, and means provided by said repeater and said independent energy pick-up for preventing reaction of said load circuit upon said tuning fork.
  • a tuning fork of substantially constant frequency a regeneratively coupled vacuum tube amplifier for driving said fork, said regeneratively coupled amplifier haVingJthe energy pick-up coils thereof so arated y one tine of thedriven tuning for i, an energy pick-up coil adjacent the other tine of said tuning fork and separated from the other of said pick-up coils by the tines of said fork for generating electrical energy of a frequency corresponding to the actual vibrational frequency of the said tuning fork, and an amplifier for amplifying the generated electrical energy and means for supplying the amplified energy to the load circuit.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
US236063A 1926-12-14 1927-11-28 Synchronizing arrangement Expired - Lifetime US1856076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE282395X 1926-12-14

Publications (1)

Publication Number Publication Date
US1856076A true US1856076A (en) 1932-05-03

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ID=6040709

Family Applications (1)

Application Number Title Priority Date Filing Date
US236063A Expired - Lifetime US1856076A (en) 1926-12-14 1927-11-28 Synchronizing arrangement

Country Status (3)

Country Link
US (1) US1856076A (fr)
FR (1) FR645145A (fr)
GB (1) GB282395A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427920A (en) * 1943-11-13 1947-09-23 Morrison Montford Selective constant-speed induction motor
US2731592A (en) * 1951-10-10 1956-01-17 Schenck Gmbh Carl Photoelectrically controlled apparatus for producing alternating currents in synchronism with rotation of structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163978A (en) * 1962-01-29 1965-01-05 Kohlhagen Walter Cordless clock of commercial powerferquency synchronized type

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427920A (en) * 1943-11-13 1947-09-23 Morrison Montford Selective constant-speed induction motor
US2731592A (en) * 1951-10-10 1956-01-17 Schenck Gmbh Carl Photoelectrically controlled apparatus for producing alternating currents in synchronism with rotation of structure

Also Published As

Publication number Publication date
FR645145A (fr) 1928-10-19
GB282395A (en) 1928-09-20

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