US1635261A - Pencil mold - Google Patents

Pencil mold Download PDF

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Publication number
US1635261A
US1635261A US148155A US14815526A US1635261A US 1635261 A US1635261 A US 1635261A US 148155 A US148155 A US 148155A US 14815526 A US14815526 A US 14815526A US 1635261 A US1635261 A US 1635261A
Authority
US
United States
Prior art keywords
mold
pencil
lead
chambers
units
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 - Lifetime
Application number
US148155A
Other languages
English (en)
Inventor
Charles E Daniels
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.)
AMERICAN CRAYON CO
Original Assignee
AMERICAN CRAYON CO
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
Priority to NL23144D priority Critical patent/NL23144C/xx
Priority to BE346740D priority patent/BE346740A/xx
Application filed by AMERICAN CRAYON CO filed Critical AMERICAN CRAYON CO
Priority to US148155A priority patent/US1635261A/en
Application granted granted Critical
Publication of US1635261A publication Critical patent/US1635261A/en
Priority to FR702871D priority patent/FR702871A/fr
Priority to GB30554/27A priority patent/GB280598A/en
Priority to DEA52473D priority patent/DE473641C/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • This invention relates to pencil molds, and
  • the invention consists in the improved pencil mold, and in the form, construction and relative arrangement of its several parts as will.
  • Figure 1 is a longitudinal sectional view through a single unit mold showing one practical form of the invention
  • Fig. 2 is an end elevation thereof
  • Fig. 3 is a horizontal section taken on the line 33 of Fig. 1;
  • Fig. 4 is an end elevation illustrating a multiple type mold
  • Fig. 5 is a longitudinal sectional view taken on the line 55 of Fig. 1;
  • Fig. 6 is a detail perspective view of one of the mold sections.
  • Fig. 7 is a perspective view of the lead holding plate.
  • the mold body 5 may consist of a metal casting having a chamber or cavity 6 of predetermined cross sectional form and extending substantially the entire length of the mold. At the base of this cavity, the wall of the mold is centrally provided with a cylindrical recess or socket 7 which is adapted to receive one end of the pencil lead indicated at 8.
  • the other end of the mold body 5 is formed with a radially projecting arm 9 to which the arm 10 of a metal disc or plate 11 is pivotally connected by a suitable screw or bolt
  • This disc 11 is provided with an opening 13 therein conforming in area and shape to the cross sectional form of the mold chamber 6, said opening being bisected by a narrow web 14 extending in the plane of the disc and centrally provided with the opening.
  • the metal disc 11 is further provided with an indentation forming a protuberance 16 adapted to seat in a shallow recess 17 formed in the end face of the mold body 5.
  • the pencil lead 8 is arranged axially within the mold chamber with one of its ends seated in the socket 7 and the other end of said lead positioned in the opening 15 of the pi ate 11.
  • the wood or paper pulp is then forced under pressure through the opening 13 in the disc 11 and into the mold chamber so that the fibers thereof become closely compacted in a homogeneous mass around the central lead core 8.
  • the mold is then subjected to heat by any suitable means so that the moisture content of the'compressed pulp mass will be evaporated and driven off whereby the pulp mass is rendered hard or rigid.
  • the edge of the disc 11 opposite the pivot 12 is then slightly lifted to disengage the protuberance 16 from the recess 17 and to disengage the projecting end ofthe lead 8 from the opening 15.
  • This disc or plate is then swung laterally on the pivot 12, thus permitting the formed pencil to be removed from the mold chamber.
  • each mold unit consists of the two sect-ions 18 and 19, respectively, the meeting faces of which along the longitudinal edges of the mold sections, are provided with suitably formed tongues and grooves, respectively, to prevent relative transverse shifting movement of the mold sections.
  • These mold sections are also provided with registering openings indicated at 20, said openings in a plurality of the mold units aligning with each other to receive the tie bolts 21.
  • One end of each mold section is further provided with flanges 22 and spaced lugs 23.
  • the meeting faces of the mold sections of each unit are provided with mating longitudinally extending mold cavities 2 1 opening upon the latter ends of the mold sections. At the other ends of these cavities and centrally thereof a semi-circular socket or seat indicated at 25 is formed in the wall of each mold section.
  • a series of mold units when a series of mold units are assembled and secured together by means of the tie rods 21, a plurality of series of mold chambers are provided and Within each chamber a lead indicated at 26 is adapted to be centrally positioned.
  • a lead holding plate 27 as shown in Fig. 7 of the drawings, is adapted to be associated with each mold unit.
  • the ends of this plate are provided with the resiliently yieldable clamping flanges 28 which are adapted to Clamp over the flanges on the mold sections, thus holding the plate closely against the ends of said mold sections.
  • This plate has a series of spaced openings 29 therein similar to the openings 13 previously re ferred to and which are adapted to exactly register with the mold cavities. These openings 29 are similarly bisected by wbs 30 having the central openings to receive one end of the leads 26.
  • the leads when the leads are inserted, they will be supported at one of their ends by these webs 30 while the other ends are supported in the sockets 2:3, thus securely holding said leads in line with the exact axial center of the respective mold chambers when the plastic pulp mass is forced into said chambers.
  • the several mold units are then subjected to the application of heat as above referred to in order to render the pulp hard and rigid. Theseveral plates 27 are then removed and the formed pencils removed from the mold chambers.
  • a pencil mold coinprisinga plurality of mold units, each having a series of chambers open at one of their ends to receive a plastic mass and provided with a central recess at the other end of each mold chamher to reteive one end of a pencil lead, means for rigidly securing a plurality of the mold units in connected relation, and means adapted to be removably connected with each mold unit and extending over the open ends of the mold chambers to support the other cues of the .pencil leads.
  • a pencil mold comprising a plurality of mold units, each having a series of chambers open at one of their ends to receive a plastic nzass and provided with a. central recess at the other end of each mold chamber to receive one end of a pencil lead, means forrigidly securing a plurality of the mold units in connected relation, said mold units at the open ends of the chambers being provided with flanges, and a plate adapted for detachable connection with each m'ol'd unit having yieldable flanges at its ends to engage the flanges of the mold units, and said plate provided with spaced openings to register with the open ends of'the mold chamber, and having means associated with each of said openings for supporting the other ends of the pencil leads.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US148155A 1926-11-13 1926-11-13 Pencil mold Expired - Lifetime US1635261A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL23144D NL23144C (en(2012)) 1926-11-13
BE346740D BE346740A (en(2012)) 1926-11-13
US148155A US1635261A (en) 1926-11-13 1926-11-13 Pencil mold
FR702871D FR702871A (fr) 1926-11-13 1927-11-12 Moule à crayon
GB30554/27A GB280598A (en) 1926-11-13 1927-11-14 Improvements in or relating to moulds for making pencils
DEA52473D DE473641C (de) 1926-11-13 1927-11-15 Formsatz zur Herstellung von Bleistiften

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US148155A US1635261A (en) 1926-11-13 1926-11-13 Pencil mold

Publications (1)

Publication Number Publication Date
US1635261A true US1635261A (en) 1927-07-12

Family

ID=22524540

Family Applications (1)

Application Number Title Priority Date Filing Date
US148155A Expired - Lifetime US1635261A (en) 1926-11-13 1926-11-13 Pencil mold

Country Status (6)

Country Link
US (1) US1635261A (en(2012))
BE (1) BE346740A (en(2012))
DE (1) DE473641C (en(2012))
FR (1) FR702871A (en(2012))
GB (1) GB280598A (en(2012))
NL (1) NL23144C (en(2012))

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003289C2 (de) * 1990-02-04 2000-02-03 Staedtler Fa J S Schreib- oder Malstift mit einem Schaft aus einer Umhüllung aus blatt- oder folienförmigem Material und Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
BE346740A (en(2012))
DE473641C (de) 1929-03-20
FR702871A (fr) 1931-04-18
GB280598A (en) 1928-07-05
NL23144C (en(2012))

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