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GB252462A - Improvements in connection with gramophones - Google Patents

Improvements in connection with gramophones

Info

Publication number
GB252462A
GB252462A GB551125A GB551125A GB252462A GB 252462 A GB252462 A GB 252462A GB 551125 A GB551125 A GB 551125A GB 551125 A GB551125 A GB 551125A GB 252462 A GB252462 A GB 252462A
Authority
GB
United Kingdom
Prior art keywords
sound
boxes
arm
tone
needle
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
GB551125A
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.)
AUSTIN ENDA O MALLEY BURKE
Original Assignee
AUSTIN ENDA O MALLEY BURKE
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 AUSTIN ENDA O MALLEY BURKE filed Critical AUSTIN ENDA O MALLEY BURKE
Priority to GB551125A priority Critical patent/GB252462A/en
Publication of GB252462A publication Critical patent/GB252462A/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
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads
    • G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
    • G11B3/34—Driving or guiding during transducing operation
    • G11B3/38—Guiding, e.g. constructions or arrangements providing linear or other special tracking characteristics
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
    • G11B3/095—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers for repeating a part of the record; for beginning or stopping at a desired point of the record
    • G11B3/0952—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers for repeating a part of the record; for beginning or stopping at a desired point of the record using automatic means
    • G11B3/0955—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers for repeating a part of the record; for beginning or stopping at a desired point of the record using automatic means using mechanical means for detecting the end of the recording

Landscapes

  • Toys (AREA)

Abstract

252,462. Burke, A. E. O. Feb. 28, 1925. Returning sound-box to starting point; tonearms; tone-arm joints; sound-boxes and tonearms, balancing.-Relates to gramophones having a number of sound-boxes, one of which automatically repeats the playing of a record as soon as the reproduction by another sound-box has finished. According to the invention, two or more sound-boxes are mounted on the same or on separate axes at the end of a tone-arm, and are so arranged that they are moved simultaneously by the action of the record track upon the needle which for the time being is in action, one sound-box reaching the starting position as soon as sound reproduction by another has finished, and all the sound-boxes starting from the same side of the centre of the record and moving over approximately the same path. In the construction shown, three sound-boxes A. A', A<2> are carried by tubes C, C<1>, C<2> which are joined to a common sleeve D rotatable upon a hollow apertured spindle which is clamped within the end of a tone-arm F. The axis of the hollow spindle is slightly inclined, so that one reproducing needle only is in playing engagement with the record track at the same time. When one needle (e.g. the needle B) has reached the end of the track after playing the record, the needle of the next sound-box (B<1> in this case) has been moved into contact with the outer part of the track and then repeats the playing, the first needle (B) moving out of contact with the surface of the record. This action occurs repeatedly. The distances between the needles can be adjusted in accordance with the width of the soundgroove zone by rotating the sound-boxes on their axes in the supporting arms. The tone-arm F is mounted on a fixed sound-conduit H by a ball- and-socket joint F<1>. A forked lever K engaging the end of the tone-arm F and provided with weights K<2> for counterbalancing the sound-boxes and tone-arm is mounted on trunnions K<1>. The lever K mav be turned into engagement with clips L to hold the arm F and the sound-boxes raised. In a simplified construction involving only two sound-boxes, these are pivoted on separate inclined axes at the end of a tone-arm which is mounted on trunnions. The sound-boxes are linked together. This arrangement provides only for one automatic repetition of the sound reproduction.
GB551125A 1925-02-28 1925-02-28 Improvements in connection with gramophones Expired GB252462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB551125A GB252462A (en) 1925-02-28 1925-02-28 Improvements in connection with gramophones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB551125A GB252462A (en) 1925-02-28 1925-02-28 Improvements in connection with gramophones

Publications (1)

Publication Number Publication Date
GB252462A true GB252462A (en) 1926-05-28

Family

ID=9797579

Family Applications (1)

Application Number Title Priority Date Filing Date
GB551125A Expired GB252462A (en) 1925-02-28 1925-02-28 Improvements in connection with gramophones

Country Status (1)

Country Link
GB (1) GB252462A (en)

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