GB521056A - Improvements in moulding parti-coloured articles - Google Patents

Improvements in moulding parti-coloured articles

Info

Publication number
GB521056A
GB521056A GB3294538A GB3294538A GB521056A GB 521056 A GB521056 A GB 521056A GB 3294538 A GB3294538 A GB 3294538A GB 3294538 A GB3294538 A GB 3294538A GB 521056 A GB521056 A GB 521056A
Authority
GB
United Kingdom
Prior art keywords
characters
moulding
keys
projections
mould
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
GB3294538A
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.)
REGINALD HENRY WINDSOR
Original Assignee
REGINALD HENRY WINDSOR
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 REGINALD HENRY WINDSOR filed Critical REGINALD HENRY WINDSOR
Priority to GB3294538A priority Critical patent/GB521056A/en
Publication of GB521056A publication Critical patent/GB521056A/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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/04—Modelling plastic materials, e.g. clay
    • B44C3/046—Modelling plastic materials, e.g. clay using a modelling surface, e.g. plate
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/46—Knobs or handles, push-buttons, grips
    • B29L2031/466—Keypads, keytops
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0081—Apparatus or processes specially adapted for the manufacture of electric switches using double shot moulding, e.g. for forming elastomeric sealing elements on form stable casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks

Abstract

521,056. Moulding typewriter keys &c. WINDSOR, R. H. Nov. 12, 1938, No. 32945. [Class 87 (ii)] In making parti-coloured articles such as keys for typewriters, calculating machines &c., or dials for automatic telephones, having figures, characters, or designs in one colour on a background of a different colour, a preliminary moulding is made in one colour of the figure &c. which is to constitute the inlay, and subsequently a material of a different colour is moulded around the preliminary moulding to form the background. In making keys for typewriters, the characters are formed by injecting thermoplastic material, such as cellulose acetate, into a two-part mould to form a set of characters 20, Fig. 1, connected to branches 21 leading to a solidified stalk 22. The mould has ejecting pins and projections for forming recesses 26, Fig. 9, in the under side of the characters and for producing apertures 24, Fig. 5, in those parts of characters which enclose a space, e.g., as in the figure " 4." The characters are detached from the branches and stalks and are held by projections in a second mould engaging in the recesses 26. Plastic material 30, 25, Fig. 9, is then injected around the characters to form the background. The branches and stalks of the second moulding operation are then removed from the finished keys. A dial for an automatic telephone is made by moulding the characters 42, Fig. 11, upstanding from a ring 40 having a rearwardly projecting solidified stalk. The stalk is removed, and the ring is supported by projections in a second mould into which thermoplastic material of a different colour is injected to form the body of the dial, the supporting projections producing recesses on the back of the dial.
GB3294538A 1938-11-12 1938-11-12 Improvements in moulding parti-coloured articles Expired GB521056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3294538A GB521056A (en) 1938-11-12 1938-11-12 Improvements in moulding parti-coloured articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3294538A GB521056A (en) 1938-11-12 1938-11-12 Improvements in moulding parti-coloured articles

Publications (1)

Publication Number Publication Date
GB521056A true GB521056A (en) 1940-05-10

Family

ID=10346328

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3294538A Expired GB521056A (en) 1938-11-12 1938-11-12 Improvements in moulding parti-coloured articles

Country Status (1)

Country Link
GB (1) GB521056A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492973A (en) * 1947-07-15 1950-01-03 Floyd J Dofsen Process for bonding thermoplastic materials
US2586978A (en) * 1948-10-09 1952-02-26 Murray John William Inlay for molded plastic articles
US3086245A (en) * 1957-06-21 1963-04-23 Joseph A Gits Mold for making an indicia-bearing article
US3086250A (en) * 1957-06-21 1963-04-23 Joseph A Gits Methods of making a molded indiciabearing article
US3148233A (en) * 1960-03-07 1964-09-08 J P Gits Molding Corp Methods of making molded articles
US3364607A (en) * 1964-10-20 1968-01-23 Stowe Woodward Inc Bowling ball
US3439917A (en) * 1965-04-05 1969-04-22 Charles J Gentile Pool ball
US4676941A (en) * 1980-12-24 1987-06-30 Fujitsu Limited Method of manufacture of plastic molding
FR2876216A1 (en) * 2004-10-01 2006-04-07 Johnson Contr Automotive Elect Control button for e.g. central locking remote control of motor vehicle, has flexible film fixed to actuating membrane to constitute base of groove and pierced with opening in which part of membrane extends

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492973A (en) * 1947-07-15 1950-01-03 Floyd J Dofsen Process for bonding thermoplastic materials
US2586978A (en) * 1948-10-09 1952-02-26 Murray John William Inlay for molded plastic articles
US3086245A (en) * 1957-06-21 1963-04-23 Joseph A Gits Mold for making an indicia-bearing article
US3086250A (en) * 1957-06-21 1963-04-23 Joseph A Gits Methods of making a molded indiciabearing article
US3148233A (en) * 1960-03-07 1964-09-08 J P Gits Molding Corp Methods of making molded articles
US3364607A (en) * 1964-10-20 1968-01-23 Stowe Woodward Inc Bowling ball
US3439917A (en) * 1965-04-05 1969-04-22 Charles J Gentile Pool ball
US4676941A (en) * 1980-12-24 1987-06-30 Fujitsu Limited Method of manufacture of plastic molding
FR2876216A1 (en) * 2004-10-01 2006-04-07 Johnson Contr Automotive Elect Control button for e.g. central locking remote control of motor vehicle, has flexible film fixed to actuating membrane to constitute base of groove and pierced with opening in which part of membrane extends

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