GB567152A - Improvements in or relating to apparatus for magnetically recording, reproducing andtransmitting speech and messages - Google Patents

Improvements in or relating to apparatus for magnetically recording, reproducing andtransmitting speech and messages

Info

Publication number
GB567152A
GB567152A GB1702342A GB1702342A GB567152A GB 567152 A GB567152 A GB 567152A GB 1702342 A GB1702342 A GB 1702342A GB 1702342 A GB1702342 A GB 1702342A GB 567152 A GB567152 A GB 567152A
Authority
GB
United Kingdom
Prior art keywords
tape
reel
feed reel
geared
winding
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
GB1702342A
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 SAINT GEORGE TERRY
SYDNEY JAMES SMITH
Telephone Manufacturing Co Ltd
Original Assignee
ROBERT SAINT GEORGE TERRY
SYDNEY JAMES SMITH
Telephone Manufacturing Co Ltd
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 ROBERT SAINT GEORGE TERRY, SYDNEY JAMES SMITH, Telephone Manufacturing Co Ltd filed Critical ROBERT SAINT GEORGE TERRY
Priority to GB1702342A priority Critical patent/GB567152A/en
Publication of GB567152A publication Critical patent/GB567152A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002—Special dispositions or recording techniques

Landscapes

  • Unwinding Webs (AREA)

Abstract

567,152. Magnetic sound recording and reproducing apparatus. TELEPHONE MANUFACTURING CO., Ltd., SMITH, S. J., and TERRY, R. ST. G. Nov. 30, 1942, No. 17023. [Class 40 (ii)] An apparatus for magnetically recording and reproducing sound comprises a storage reel 3, Fig. 1, on which a metal tape or wire is normally wound, a feed reel 4 on which the tape is wound from its storage reel before recording or reproducing, the operation of winding the tape on the feed reel also winding spring means for subsequently winding the tape back on the storage reel from the feed reel, during which rewinding the tape is drawn through a recording or reproducing head 12 to perform the recording or reproducing operation. In the apparatus shown, the winding of the tape on the feed reel is performed by means of a handle 5, which can be turned into a recess 5c when the apparatus is not in use. The spring means for winding the tape back comprise two spring drums 21, 21, Figs. 2 and 3, geared to the spindle 20 of the storage reel 3. The spring drums are given a preliminary winding by means of keys detachably fitted to their spindles. Then ratchet pawls 34, 34 are tightened up by screws 35. The storage reel is geared to a screw 25 in engagement with a non-rotatable nut 28 adapted to abut a fixed stop 31 to limit the unwinding of the tape from the storage reel. A spring cushioning device 30 is also provided on the nut to co-operate with rods which confine the nut against rotation. The feed reel 4 is similarly geared to a screw and nut device 37, 24, which limits the unwinding of the tape from the'feed reel, and is also connected to a lever 9 for indicating the extent of travel of the tape. The feed reel 3 is also geared to two centrifugal speed regulators 16, 17. The regulator 16 is a " fast " speed regulator permanently in gear with the feed reel. The other regulator 17 is a " low " speed regulator and is geared to the feed reel through a clutch which is thrown in and out by a fork 64 connected to the speed setting device 10. A " start-stop " control lever 11 is adapted to release or stop a spring cushioned finger on one of the spindles geared to the feed reel. The reels are detachable and interchangeable, co-operating lugs and slots being provided for this purpose. The magnetic head 12 can be opened and closed, and is held closed by a latch 12a. The mechanism is arranged behind a front panel 1 and is protected by a back cover 13.
GB1702342A 1942-11-30 1942-11-30 Improvements in or relating to apparatus for magnetically recording, reproducing andtransmitting speech and messages Expired GB567152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1702342A GB567152A (en) 1942-11-30 1942-11-30 Improvements in or relating to apparatus for magnetically recording, reproducing andtransmitting speech and messages

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1702342A GB567152A (en) 1942-11-30 1942-11-30 Improvements in or relating to apparatus for magnetically recording, reproducing andtransmitting speech and messages

Publications (1)

Publication Number Publication Date
GB567152A true GB567152A (en) 1945-01-31

Family

ID=10087816

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1702342A Expired GB567152A (en) 1942-11-30 1942-11-30 Improvements in or relating to apparatus for magnetically recording, reproducing andtransmitting speech and messages

Country Status (1)

Country Link
GB (1) GB567152A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609457A (en) * 1949-03-16 1952-09-02 Thurm Leon Electromagnetic sound recorder and reproducer
US2677727A (en) * 1951-12-20 1954-05-04 Nathan M Haynes Portable magnetic tape recorder
US2711445A (en) * 1951-03-27 1955-06-21 Steinegger Giovanni Sound recording and reproducing device
US2866009A (en) * 1951-10-27 1958-12-23 Protona Sound recording and sound reproducing apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609457A (en) * 1949-03-16 1952-09-02 Thurm Leon Electromagnetic sound recorder and reproducer
US2711445A (en) * 1951-03-27 1955-06-21 Steinegger Giovanni Sound recording and reproducing device
US2866009A (en) * 1951-10-27 1958-12-23 Protona Sound recording and sound reproducing apparatus
US2677727A (en) * 1951-12-20 1954-05-04 Nathan M Haynes Portable magnetic tape recorder

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