GB391696A - Improved method of and means for manufacturing cones for loud speakers and other purposes - Google Patents

Improved method of and means for manufacturing cones for loud speakers and other purposes

Info

Publication number
GB391696A
GB391696A GB2878932A GB2878932A GB391696A GB 391696 A GB391696 A GB 391696A GB 2878932 A GB2878932 A GB 2878932A GB 2878932 A GB2878932 A GB 2878932A GB 391696 A GB391696 A GB 391696A
Authority
GB
United Kingdom
Prior art keywords
mould
purposes
improved method
cones
loud speakers
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
GB2878932A
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.)
ARTHUR MILLBOURN AND Co L
ARTHUR SPRINGETT MILLBOURN
Original Assignee
ARTHUR MILLBOURN AND Co L
ARTHUR SPRINGETT MILLBOURN
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 ARTHUR MILLBOURN AND Co L, ARTHUR SPRINGETT MILLBOURN filed Critical ARTHUR MILLBOURN AND Co L
Priority to GB2878932A priority Critical patent/GB391696A/en
Publication of GB391696A publication Critical patent/GB391696A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

391,696. Diaphragms. MILLBOURN, A. S. and MILLBOURN & CO., Ltd., A., Tuckenhay Mills, Totnes, Devon. Oct. 14, 1932, No. 28789. [Class 40 (iv).] Cones for loud-speakers are formed from paper pulp on a reticulated conical sheet-metal mould 1. The mould has a cylindrical apex 3, rings 7 which form protuberances or water marks on the cone. and an arcuate channel 8. Radial ribs 10 may be formed near the apex of the mould to produce reinforcing ribs on the cone. The rings 7 may alternatively be placed on the outer surface of the mould and the pulp deposited outside.
GB2878932A 1932-10-14 1932-10-14 Improved method of and means for manufacturing cones for loud speakers and other purposes Expired GB391696A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2878932A GB391696A (en) 1932-10-14 1932-10-14 Improved method of and means for manufacturing cones for loud speakers and other purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2878932A GB391696A (en) 1932-10-14 1932-10-14 Improved method of and means for manufacturing cones for loud speakers and other purposes

Publications (1)

Publication Number Publication Date
GB391696A true GB391696A (en) 1933-05-04

Family

ID=10281191

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2878932A Expired GB391696A (en) 1932-10-14 1932-10-14 Improved method of and means for manufacturing cones for loud speakers and other purposes

Country Status (1)

Country Link
GB (1) GB391696A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2826346A (en) * 1954-05-03 1958-03-11 Keyes Fibre Co Serving holder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2826346A (en) * 1954-05-03 1958-03-11 Keyes Fibre Co Serving holder

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