GB879774A - Improvements in or relating to dies - Google Patents

Improvements in or relating to dies

Info

Publication number
GB879774A
GB879774A GB7799/58A GB779958A GB879774A GB 879774 A GB879774 A GB 879774A GB 7799/58 A GB7799/58 A GB 7799/58A GB 779958 A GB779958 A GB 779958A GB 879774 A GB879774 A GB 879774A
Authority
GB
United Kingdom
Prior art keywords
plates
march
blades
die
moulding
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
GB7799/58A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB879774A publication Critical patent/GB879774A/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
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D17/00—Producing carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records; Producing record discs from master stencils
    • B29D17/002—Producing phonograph records
    • 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
    • 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
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of 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

Landscapes

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

Abstract

879,774. Moulding gramophone records &c. PHILIPS ELECTRICAL INDUSTRIES Ltd. March 11, 1958 [March 14, 1957], No. 7799/58. Class 87(2). A die for moulding flat objects such as gramophone records comprises two parts 1, 2 hinged together, a resilient connection being provided between each part 1, 2 and the pivotal point, In Fig, 1 the blades 8, 9 of the pivot 10 are connected by spring plates 6, 7 to plates 4, 5 carrying the die parts 1, 2. Alternatively the blades 8, 9 may be made resilient and connected directly to the plates 4, 5.
GB7799/58A 1957-03-14 1958-03-11 Improvements in or relating to dies Expired GB879774A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL879774X 1957-03-14

Publications (1)

Publication Number Publication Date
GB879774A true GB879774A (en) 1961-10-11

Family

ID=19851530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7799/58A Expired GB879774A (en) 1957-03-14 1958-03-11 Improvements in or relating to dies

Country Status (1)

Country Link
GB (1) GB879774A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170440A (en) * 1985-02-05 1986-08-06 Centricast Ltd Casting of moulds for centrifugal casting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170440A (en) * 1985-02-05 1986-08-06 Centricast Ltd Casting of moulds for centrifugal casting

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