GB1222448A – Improvements in or relating to propelling pencils
– Google Patents
GB1222448A – Improvements in or relating to propelling pencils
– Google Patents
Improvements in or relating to propelling pencils
Info
Publication number
GB1222448A
GB1222448A
GB52145/68A
GB5214568A
GB1222448A
GB 1222448 A
GB1222448 A
GB 1222448A
GB 52145/68 A
GB52145/68 A
GB 52145/68A
GB 5214568 A
GB5214568 A
GB 5214568A
GB 1222448 A
GB1222448 A
GB 1222448A
Authority
GB
United Kingdom
Prior art keywords
tube
knob
lead
sleeve
rod
Prior art date
1968-11-04
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
GB52145/68A
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.)
MERMAID ENGINEERING Co LT
Original Assignee
MERMAID ENGINEERING Co LT
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.)
1968-11-04
Filing date
1968-11-04
Publication date
1971-02-10
1968-11-04
Application filed by MERMAID ENGINEERING Co LT
filed
Critical
MERMAID ENGINEERING Co LT
1968-11-04
Priority to GB52145/68A
priority
Critical
patent/GB1222448A/en
1969-11-04
Priority to US873983A
priority
patent/US3630628A/en
1971-02-10
Publication of GB1222448A
publication
Critical
patent/GB1222448A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
B—PERFORMING OPERATIONS; TRANSPORTING
B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
B43K—IMPLEMENTS FOR WRITING OR DRAWING
B43K21/00—Propelling pencils
B43K21/02—Writing-core feeding mechanisms
B43K21/08—Writing-core feeding mechanisms with the writing-cores fed by screws
Abstract
1,222,448. Propelling pencil. MERMAID ENG. CO. Ltd. 4 Nov., 1969 [4 Nov., 1968], No. 52145/68. Heading B6P. A propelling pencil comprises a tube 13, internally threaded at one end, the threads 14 of the tube engaging threads 15 of a cylindrical element 16 formed from plastics and moulded around the end of a wire 31, which wire serves to project the lead (not illustrated). The threads 15 of the element 16 are only on one half of its cylindrical surface. An operating rod 19 is of arcuate cross-section and of such a radius that it will fit between the unthreaded portion of the element 16 and the inner wall of the threaded tube 13 so that rotation of the rod 19 by a knob 20 causes the element 16 also to rotate and hence move axially relatively to the tube 13 and the rod 19. The knob 20 has a gripping piece 22 and a tubular portion 23 of smaller diameter than the rest of the knob 20. The tubular portion is formed with an annular flange 17 at the extremity thereof, which flange co-operates with a circumferential groove 30 formed in a flexibly resilient plastics sleeve 24. The knob 20 and rod 19 are mounted for rotational, non-axial movement by the plastics sleeve 24 which fits over the outside of the tube 13. The sleeve 24 is split by two longitudinally extending diametrically opposed cuts 28 into two jaws 29. The pencil casing 11, when fitted over the end of a tube 33 carried by the sleeve 24, engages with bosses 59 on the jaws 29, so that the jaws 29 grip the knob 20 to prevent its easy rotation. A guide within which the pencil lead is movable longitudinally includes a tube 41 and blade 50 of resilient material of cylindrical shape and formed with conical indentations 51 at its opposite ends. The indentations guide the lead into a puncture 52 extending between the apices 53 of the indentations. The lead is held by the resilience of the material until urged through the puncture by movement of the wire 31 or direct movement of the lead by an external force. Compartments 34 defined by the tube 33 carried by the sleeve 24 are utilized for carrying spare leads. An annular stopper 35 is fitted over the end 38 of an extension tube 36 fitted tightly into the threaded tube 13.
GB52145/68A
1968-11-04
1968-11-04
Improvements in or relating to propelling pencils
Expired
GB1222448A
(en)
Priority Applications (2)
Application Number
Priority Date
Filing Date
Title
GB52145/68A
GB1222448A
(en)
1968-11-04
1968-11-04
Improvements in or relating to propelling pencils
US873983A
US3630628A
(en)
1968-11-04
1969-11-04
Propelling pencils
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB52145/68A
GB1222448A
(en)
1968-11-04
1968-11-04
Improvements in or relating to propelling pencils
Publications (1)
Publication Number
Publication Date
GB1222448A
true
GB1222448A
(en)
1971-02-10
Family
ID=10462801
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB52145/68A
Expired
GB1222448A
(en)
1968-11-04
1968-11-04
Improvements in or relating to propelling pencils
Country Status (2)
Country
Link
US
(1)
US3630628A
(en)
GB
(1)
GB1222448A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4997299A
(en)
*
1989-11-21
1991-03-05
Suzuno Kasei Co., Ltd.
Cosmetic container
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4141663A
(en)
*
1977-03-07
1979-02-27
Hallmark Cards, Incorporated
Jam-resistant lead feed mechanism for mechanical pencil
Family Cites Families (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US1490244A
(en)
*
1917-12-04
1924-04-15
Wahl Co
Self-loading magazine pencil
US1828527A
(en)
*
1922-10-19
1931-10-20
Howard L Fischer
Pencil
GB422767A
(en)
*
1933-07-13
1935-01-17
Ludwig Frederick Brenner
Improvements in and relating to propelling pencils
US2319823A
(en)
*
1942-05-25
1943-05-25
Eversharp Inc
Mechanical pencil
1968
1968-11-04
GB
GB52145/68A
patent/GB1222448A/en
not_active
Expired
1969
1969-11-04
US
US873983A
patent/US3630628A/en
not_active
Expired – Lifetime
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4997299A
(en)
*
1989-11-21
1991-03-05
Suzuno Kasei Co., Ltd.
Cosmetic container
Also Published As
Publication number
Publication date
US3630628A
(en)
1971-12-28
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