GB374102A - Improvements in the manufacture of gramophone records - Google Patents

Improvements in the manufacture of gramophone records

Info

Publication number
GB374102A
GB374102A GB650831A GB650831A GB374102A GB 374102 A GB374102 A GB 374102A GB 650831 A GB650831 A GB 650831A GB 650831 A GB650831 A GB 650831A GB 374102 A GB374102 A GB 374102A
Authority
GB
United Kingdom
Prior art keywords
parts
record
oxide
mixture
aluminium
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
GB650831A
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.)
HENRY TIMMS
KENNETH STEWART LOW
Original Assignee
HENRY TIMMS
KENNETH STEWART LOW
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 HENRY TIMMS, KENNETH STEWART LOW filed Critical HENRY TIMMS
Priority to GB650831A priority Critical patent/GB374102A/en
Publication of GB374102A publication Critical patent/GB374102A/en
Expired legal-status Critical Current

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Abstract

Gramophone record material made from cellulose derivatives together with solvents, plasticizers and fillers, such as asbestos powder, has an oxide or salt of aluminium or a mixture of these, combined therewith to enable the resulting homogeneous records made therefrom in a press to support the stylus properly. The quantity of the added material varies with the flexibility and thickness required in the record. A suitable record composition comprises acetyl cellulose, 250 parts by weight, triphenyl phosphate, 50 parts, diacetone alcohol, 35 parts, triacetin, 10 parts, acetone, 1250 parts, and aluminium oxide or silicate or a mixture thereof, 35 parts. The added material may be previously mixed or diluted with compounds of the alkaline-earth metals such as magnesium oxide. Specifications 4953/09, 192,107, 326,765, [all in Class 70, Indiarubber &c.], and 348,597 are referred to.
GB650831A 1931-03-03 1931-03-03 Improvements in the manufacture of gramophone records Expired GB374102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB650831A GB374102A (en) 1931-03-03 1931-03-03 Improvements in the manufacture of gramophone records

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB650831A GB374102A (en) 1931-03-03 1931-03-03 Improvements in the manufacture of gramophone records

Publications (1)

Publication Number Publication Date
GB374102A true GB374102A (en) 1932-06-06

Family

ID=9815791

Family Applications (1)

Application Number Title Priority Date Filing Date
GB650831A Expired GB374102A (en) 1931-03-03 1931-03-03 Improvements in the manufacture of gramophone records

Country Status (1)

Country Link
GB (1) GB374102A (en)

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