GB314158A - Improvements in mould plates for talking machine record presses - Google Patents

Improvements in mould plates for talking machine record presses

Info

Publication number
GB314158A
GB314158A GB1138228A GB1138228A GB314158A GB 314158 A GB314158 A GB 314158A GB 1138228 A GB1138228 A GB 1138228A GB 1138228 A GB1138228 A GB 1138228A GB 314158 A GB314158 A GB 314158A
Authority
GB
United Kingdom
Prior art keywords
mould plates
talking machine
channel
series
machine record
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
GB1138228A
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.)
Parlophone Records Ltd
Original Assignee
Gramophone 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 Gramophone Co Ltd filed Critical Gramophone Co Ltd
Priority to GB1138228A priority Critical patent/GB314158A/en
Priority to FR671042D priority patent/FR671042A/en
Publication of GB314158A publication Critical patent/GB314158A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • B29C33/048—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam using steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

314,158. Gramophone Co., Ltd., Knight, E., and Willmott, A. S. April 17, 1928. Moulding phonograph records.-Relates to mould plates for gramophone record presses of the kind furnished with channels connected in series by communicating passages and consists in so placing the passages that the heating and cooling fluid is divided in each channel into streams which pass in different directions through the channel. As shown, the plate 1 is formed with a series of concentric channels 7 - - 12 which are connected by communicating passages 18 - - 22 placed alternately at diametrically opposite points, fluid entering the mould plate at 32 and leaving at 33. The edges of the openings 18 - - 22 may be stream-lined, as shown at 24, 25.
GB1138228A 1928-04-17 1928-04-17 Improvements in mould plates for talking machine record presses Expired GB314158A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1138228A GB314158A (en) 1928-04-17 1928-04-17 Improvements in mould plates for talking machine record presses
FR671042D FR671042A (en) 1928-04-17 1929-03-07 Improvements to mold plates for talking machine disc presses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1138228A GB314158A (en) 1928-04-17 1928-04-17 Improvements in mould plates for talking machine record presses

Publications (1)

Publication Number Publication Date
GB314158A true GB314158A (en) 1929-06-27

Family

ID=9985195

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1138228A Expired GB314158A (en) 1928-04-17 1928-04-17 Improvements in mould plates for talking machine record presses

Country Status (2)

Country Link
FR (1) FR671042A (en)
GB (1) GB314158A (en)

Also Published As

Publication number Publication date
FR671042A (en) 1929-12-07

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