GB335209A - Improvements in and relating to machines for pressing disc sound records - Google Patents

Improvements in and relating to machines for pressing disc sound records

Info

Publication number
GB335209A
GB335209A GB18851/29A GB1885129A GB335209A GB 335209 A GB335209 A GB 335209A GB 18851/29 A GB18851/29 A GB 18851/29A GB 1885129 A GB1885129 A GB 1885129A GB 335209 A GB335209 A GB 335209A
Authority
GB
United Kingdom
Prior art keywords
ring
clamping
fingers
pressing disc
relating
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
GB18851/29A
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.)
COLUMBIA GRAPHOPHONE CO Ltd
Original Assignee
COLUMBIA GRAPHOPHONE 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 COLUMBIA GRAPHOPHONE CO Ltd filed Critical COLUMBIA GRAPHOPHONE CO Ltd
Priority to GB18851/29A priority Critical patent/GB335209A/en
Priority to US456065A priority patent/US1916996A/en
Publication of GB335209A publication Critical patent/GB335209A/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
    • B29C33/30—Mounting, exchanging or centering
    • B29C33/305—Mounting of moulds or mould support plates
    • 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
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/81—Sound record

Abstract

335,209. Columbia Graphophone Co., Ltd., and Somner, W. June 19, 1929. Moulding gramophone records; pressing-discs. -A matrix M for pressing disc sound records is secured in the die-holder D by a rotating clamping ring C having recesses C<3> provided with inclined faces C<6> so that spring fingers S may apply a clamping pressure. The ring may be rotated by a pinion and a detachable key. The ring may be flanged so that the fingers S do not project above the ring face. A buffer ring B, Fig. 5, may be located between the matrix M and the clamping ring C. In a modification the fingers are formed on the clamping ring, the recesses being formed in the die holder. The ring may be rotated by a lever with pins engaging holes in the ring. In a further modification the clamping ring is secured by chamfered eccentric cams. Specification 223,943 is referred to.
GB18851/29A 1929-06-19 1929-06-19 Improvements in and relating to machines for pressing disc sound records Expired GB335209A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB18851/29A GB335209A (en) 1929-06-19 1929-06-19 Improvements in and relating to machines for pressing disc sound records
US456065A US1916996A (en) 1929-06-19 1930-05-27 Machine for pressing sound records and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18851/29A GB335209A (en) 1929-06-19 1929-06-19 Improvements in and relating to machines for pressing disc sound records

Publications (1)

Publication Number Publication Date
GB335209A true GB335209A (en) 1930-09-19

Family

ID=10119485

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18851/29A Expired GB335209A (en) 1929-06-19 1929-06-19 Improvements in and relating to machines for pressing disc sound records

Country Status (2)

Country Link
US (1) US1916996A (en)
GB (1) GB335209A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632280A (en) * 1969-09-16 1972-01-04 Leonard Palmer Device for holding a stamper on the die of a record press
US3894825A (en) * 1973-12-26 1975-07-15 William S Westermann Record die tool
GB2129735B (en) * 1982-09-17 1985-12-11 Emi Electrola Gmbh Disc record stamper alignment
JPS63130320A (en) * 1986-11-20 1988-06-02 Meiki Co Ltd Disk molding mold
NL8701499A (en) * 1987-06-26 1989-01-16 Philips Nv SYRINGE DEVICE FOR MANUFACTURING PLASTICS INFORMATION PLATES AND METHOD FOR MANUFACTURING SYNTHETIC PLATES WITH A SYRINGE DEVICE.

Also Published As

Publication number Publication date
US1916996A (en) 1933-07-04

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