US2290899A - Magnetic sound recording device - Google Patents

Magnetic sound recording device Download PDF

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Publication number
US2290899A
US2290899A US288333A US28833339A US2290899A US 2290899 A US2290899 A US 2290899A US 288333 A US288333 A US 288333A US 28833339 A US28833339 A US 28833339A US 2290899 A US2290899 A US 2290899A
Authority
US
United States
Prior art keywords
sound recording
recording device
machine
magnetic sound
levers
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
US288333A
Other languages
English (en)
Inventor
Stapelfeldt Arnold
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of US2290899A publication Critical patent/US2290899A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/22—Stopping means
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34—Indicating arrangements 

Definitions

  • Magnetic recording devices of the type designated as steeltone machines which comprise a mechanism coupled with the motor drive and having a hand or pointer for indicating I the length of that part of the wireor tapeindicating device of the type having rotary-pointers are employed.
  • marker plates have been used which have a nut screw in engagement with a spindle or lead screw and arranged to move along this spindle under the influence of a guide rod for such nut.
  • This rod is mounted on a casing in which the well-known bobbins or reels are contained, and is displaceable in its longitudinal direction.
  • the guide rod is displaced and thereby acts to stop the machine.
  • FIG. 1 is a fragmentary sectional View thereof while Fig. 2 shows a section on line E -2 of Fig. 1.
  • i denotes a casing in which the well-known reels, not represented in the drawing, are located.
  • a lead screw or spindle 2 is revolubly mounted in the casing i and is connected with a motor drive A which comprises two bevel gears, as shown.
  • Spindle 2 is in engagement with a nut screw 3 guided in a slot 1) of the casing 9.
  • Nut 3 carries a pointer it that belongs to a. scale l5 which extends longitudinally of the casing.
  • the nut 3 also has two stops 4, 5 rigidly fitted to it.
  • Two adjustable slides G, l are guided in a longitudinal slot 0 of casing l and have each a lever t, 514 fulcrumed to them.
  • levers are ar- I ranged to be deflected by the stops t, 5, respectively.
  • One of the levers 8, 9 serves to stop the machine upon its forward limit of operation, while the other lever is to limit the recoiling length.
  • the levers 8, 9 to such end act on two flaps IO, N, mounted in the casing l by means of a trunnion at common to them.
  • the flaps I0, H have each an arm I3 and I2, respectively. These arms are arranged to close contacts e, f and thereby to stop the machine in any well known manner, for example, by stopping the motor or opening a driving clutch.
  • slide 6 may be displaced in slot 0 to limit the operating time of the machine to a desired time of talking.
  • slide 1 allows of limiting the recoiling period in accordance with each speech. For instance, in case it is desired to repeat a recorded speech, slide 1 may be so adjusted that the machine shall only recoil until the commencement of the desired speech. Much time will thus be saved, since it is not necessary to recoil the whole record carrier.
  • Another advantage is that the machine will not be affected by shocks and will not be stopped accidentally.
  • a potentiometer may be arranged parallel to spindle 2 and the nut 3 may be equipped with a contact member for such potentiometer.
  • the various positions this contact member assumes when traveling along the potentiometer, and which accord with the successive positions of pointer id and equally accord with the record-carryin Portion of the recording wire or tape, may then be transmitted in known manner to a remote place.
  • A. sound recording machine which comprises a drive means, a rectilinear scale, adjustable slides adapted to be displaced in both directions of this scale, levers fulcrumed to these slides, movable stops to deflect these levers, means controlled by said drive means for moving said stops along said scale and into operative position with respect to said levers, flaps arranged to move under the control of deflection of said levers, and electric contacts to efi'ect the stoppage of the machine, such contacts being under the control of movement said flaps.
  • a sound recording machine according to 4.
  • a sound recording machine according to claim 1, in which the said flaps are mounted in the casing by means or a trunnion common to them.
  • a sound recording machine having arms rigid with said flaps to operate the said contacts.

Landscapes

  • Transmission Devices (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
US288333A 1938-08-04 1939-08-04 Magnetic sound recording device Expired - Lifetime US2290899A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE750566T 1938-08-04

Publications (1)

Publication Number Publication Date
US2290899A true US2290899A (en) 1942-07-28

Family

ID=5808247

Family Applications (1)

Application Number Title Priority Date Filing Date
US288333A Expired - Lifetime US2290899A (en) 1938-08-04 1939-08-04 Magnetic sound recording device

Country Status (5)

Country Link
US (1) US2290899A (fr)
BE (1) BE435742A (fr)
CH (1) CH212466A (fr)
DE (1) DE750566C (fr)
NL (1) NL53585C (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422495A (en) * 1947-06-17 Electric piston
US2461282A (en) * 1945-07-06 1949-02-08 Owens Illinois Glass Co Injector mechanism for molding machines
US2944436A (en) * 1958-01-20 1960-07-12 Ferro Stamping Co Non-jamming actuated screw and nut comuination
US4858481A (en) * 1985-05-13 1989-08-22 Brunswick Valve & Control, Inc. Position controlled linear actuator

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE832074C (de) * 1948-11-26 1952-06-30 Schaub Appbau Ges M B H G Vorrichtung zur Wiedergabe ausgewaehlter Teile einer Magnettonaufnahme
DE954742C (de) * 1954-02-26 1956-12-20 Max Grundig Tontraegerkassette, insbesondere Magnettontraegerkassette
DE1237353B (de) * 1955-09-28 1967-03-23 Bernard Lowe Magnettongeraet
DE1081685B (de) * 1955-12-08 1960-05-12 Luxor Industri Ab Start-Stop-Vorrichtung bei Tonaufnahme-und Wiedergabegeraeten
US2929633A (en) * 1957-06-17 1960-03-22 Hoshino Yasushi Mechanism for driving the head-supporting body in the magnetic sound recording and reading machine
DE1092679B (de) * 1957-09-28 1960-11-10 Romulus Turliuc Steuervorrichtung fuer ein Tonbandgeraet
DE1162099B (de) * 1958-04-18 1964-01-30 Hans J Wilhelmy Tonbandgeraet mit Bandeinstellung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR684609A (fr) * 1929-10-14 1930-06-27 Perfectionnements aux machines à enregistrer et à reproduire les sons
DE587671C (de) * 1930-01-24 1933-11-06 Telegraphie Patent Syndikat G Vorrichtung zur Stillsetzung des Sprechdrahtes oder Sprechbandes von magnetischen Sprechmaschinen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422495A (en) * 1947-06-17 Electric piston
US2461282A (en) * 1945-07-06 1949-02-08 Owens Illinois Glass Co Injector mechanism for molding machines
US2944436A (en) * 1958-01-20 1960-07-12 Ferro Stamping Co Non-jamming actuated screw and nut comuination
US4858481A (en) * 1985-05-13 1989-08-22 Brunswick Valve & Control, Inc. Position controlled linear actuator

Also Published As

Publication number Publication date
BE435742A (fr)
DE750566C (de) 1945-01-18
CH212466A (de) 1940-11-30
NL53585C (fr)

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