GB358925A - Improvements in sound recording and reproducing tools and in records cut or reproduced thereby - Google Patents

Improvements in sound recording and reproducing tools and in records cut or reproduced thereby

Info

Publication number
GB358925A
GB358925A GB1095830A GB1095830A GB358925A GB 358925 A GB358925 A GB 358925A GB 1095830 A GB1095830 A GB 1095830A GB 1095830 A GB1095830 A GB 1095830A GB 358925 A GB358925 A GB 358925A
Authority
GB
United Kingdom
Prior art keywords
class
arcs
stylus
recording
cutting
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
GB1095830A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1095830A priority Critical patent/GB358925A/en
Publication of GB358925A publication Critical patent/GB358925A/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
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
    • G11B3/48—Needles

Landscapes

  • Stereophonic Arrangements (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

358,925. Recording sound. SYKES, A. F., Arundel House, Warwick Road, New Barnet, Hertfordshire. April 7, 1930, No. 10958. [Class 40 (ii).] A recording stylus for cutting hill-and-dale or zig-zag record grooves has a cutting edge formed by two flat sides parallel or somewhat inclined to one another, two arcs contacting therewith, and a substantially horizontal portion joining the arcs and consisting of a straight line, curve, or a pair of lines meeting in an apex. Figs. I and III show two forms in which somewhat inclined sides are connected by arcs 2 to a horizontal part 3 or to lines 5 meeting at an apex respectively. The stylus is particularly suitable for cutting long playing records and its width may be equal to, less than or greater than the pitch of the grooves. Certain amplitudes may be distorted in the record and corrected in reproduction by the arrangements described in Specification 160,223, [Class 40 (ii), Phonographs &c.], and a microphone such as described in Specification 311,826, [Class 40 (iv), Telephones &c.], may be employed to influence the recording stylus. The reproducing tool may fill the groove or only a part of it as shown in Fig. VII. Specifications 303,759 and 310,790, [both in Class 40 (ii), Phonographs &c.], also are referred to.
GB1095830A 1930-04-07 1930-04-07 Improvements in sound recording and reproducing tools and in records cut or reproduced thereby Expired GB358925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1095830A GB358925A (en) 1930-04-07 1930-04-07 Improvements in sound recording and reproducing tools and in records cut or reproduced thereby

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1095830A GB358925A (en) 1930-04-07 1930-04-07 Improvements in sound recording and reproducing tools and in records cut or reproduced thereby

Publications (1)

Publication Number Publication Date
GB358925A true GB358925A (en) 1931-10-07

Family

ID=9977435

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1095830A Expired GB358925A (en) 1930-04-07 1930-04-07 Improvements in sound recording and reproducing tools and in records cut or reproduced thereby

Country Status (1)

Country Link
GB (1) GB358925A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573723A (en) * 1947-09-30 1951-11-06 Jr Edward F Mcclain Phonograph stylus of small effective tip radius
US2686679A (en) * 1949-04-30 1954-08-17 Avco Mfg Corp Universal sound reproducing stylus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573723A (en) * 1947-09-30 1951-11-06 Jr Edward F Mcclain Phonograph stylus of small effective tip radius
US2686679A (en) * 1949-04-30 1954-08-17 Avco Mfg Corp Universal sound reproducing stylus

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