GB1206864A - A unitary elongate composite article such as a writing instrument and method of manufacturing the same - Google Patents

A unitary elongate composite article such as a writing instrument and method of manufacturing the same

Info

Publication number
GB1206864A
GB1206864A GB1847368A GB1847368A GB1206864A GB 1206864 A GB1206864 A GB 1206864A GB 1847368 A GB1847368 A GB 1847368A GB 1847368 A GB1847368 A GB 1847368A GB 1206864 A GB1206864 A GB 1206864A
Authority
GB
United Kingdom
Prior art keywords
casing
probe
hole
lining
foamed plastic
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
GB1847368A
Inventor
Bernard I Bartner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1206864A publication Critical patent/GB1206864A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K19/00—Non-propelling pencils; Styles; Crayons; Chalks
    • B43K19/16—Making non-propelling pencils

Landscapes

  • Sheet Holders (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1,206,864. Moulding foamed thermoplastics. B. I. BARTNER. 18 April, 1968 [18 April, 1967], No. 18473/68. Heading B5A. [Also in Division B6] An article comprising an elongated core 12, Fig. 5, such as a pencil lead, a crayon, or a ballpoint-pen refill, and an outer casing 14, has the casing formed with a lining of thermoplastic material, the core being inserted whilst the lining is in a plastic condition, so that when the plastic sets, the core and casing are bonded together. The lining is of foamed plastic material and is provided with a rigid outer covering of non-foamed plastic. The casings 14 are formed by extruding thermoplastic material 22 containing a suitable foaming agent through an outlet 24. Surrounding the outlet 24 is a chamber 28 to which non-foamed plastic material 30 is fed to form the rigid outer covering. The chamber 28 may have ribs extending across it to form ribs on the outside of the casing instead of a continuous outer covering. Subsequently, the extruded material passes through a cooling bath 36, and transporting means 38, and is severed by a cutter 40 into lengths. An axial hole is now formed in each casing 14 by means of a heated probe 42, or, if such a hole is formed during extrusion, the probe enlarges the hole. The probe also melts the surface of the hole, and as the probe is withdrawn a pencil lead 12 is pushed into the casing from the opposite end. If the lead 12 is preheated, it can be used to form the hole, thus dispensing with the probe. Polystyrene, polypropylene, polyvinyl chloride or polyethylene of suitable density may be the plastic employed. The structure of the foamed plastic material is similar to that of wood so that a conventional pencil sharpener may be used. The probe 42, Fig. 4, comprises a nichrome wire 44 within a suitable casing 46 with an end 48 of the wire exposed and electrically joined as by silver solder to an outer stainless steel casing 52. The casing 52 and wire 44 are connected to a power source 56.
GB1847368A 1967-04-18 1968-04-18 A unitary elongate composite article such as a writing instrument and method of manufacturing the same Expired GB1206864A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63165267A 1967-04-18 1967-04-18

Publications (1)

Publication Number Publication Date
GB1206864A true GB1206864A (en) 1970-09-30

Family

ID=24532147

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1847368A Expired GB1206864A (en) 1967-04-18 1968-04-18 A unitary elongate composite article such as a writing instrument and method of manufacturing the same

Country Status (3)

Country Link
JP (1) JPS4819725B1 (en)
DE (1) DE1761201A1 (en)
GB (1) GB1206864A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2245860A (en) * 1990-06-05 1992-01-15 Atomic Energy Authority Uk Plastics extrusion

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1561767B1 (en) * 1967-10-04 1972-07-06 Bayer Ag Pen
JPH0442318Y2 (en) * 1988-02-29 1992-10-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2245860A (en) * 1990-06-05 1992-01-15 Atomic Energy Authority Uk Plastics extrusion

Also Published As

Publication number Publication date
DE1761201A1 (en) 1970-08-13
JPS4819725B1 (en) 1973-06-15

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees