US3078571A - Cutting head for use in a dry shaving apparatus having an oval shape movable cutter - Google Patents

Cutting head for use in a dry shaving apparatus having an oval shape movable cutter Download PDF

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Publication number
US3078571A
US3078571A US6478A US647860A US3078571A US 3078571 A US3078571 A US 3078571A US 6478 A US6478 A US 6478A US 647860 A US647860 A US 647860A US 3078571 A US3078571 A US 3078571A
Authority
US
United States
Prior art keywords
cutting member
cutting head
cutting
shear plate
shaving apparatus
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
US6478A
Other languages
English (en)
Inventor
Timmerman Jan
Kooistra Anne
Starre Gerrit
Driessen Henricus Josef
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.)
US Philips Corp
North American Philips Co Inc
Original Assignee
US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3078571A publication Critical patent/US3078571A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/14—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor

Definitions

  • This invention relates to improvements in or relating to cutting heads for use in a dry shaving apparatus co-m prising an apertured shear plate and a rotatably arranged cutting member co-operating herewith and centered in a running groove of the shear plate, a dry shaving apparatus comprising such a cutting head and a cutting memher and shear plate for use in such a cutting head.
  • the invention has for its object to avoid the objectionable piercing noise explained above.
  • either the centering wall of the running groove or the envelope of the centering sides of the cutting member is shaped in a form deviating from that of a circle, for example in an oval form.
  • a practical, simple embodiment of the invention consists in that in a cutting head in which the centering of the cutting member takes place by means of the sides of the feet provided with cutting edges, all sides located on one side of a center line of the cutting member are ground ed on the inner side.
  • the sides are preferably ground off to an extent such that the cutting member can touch simultaneously both the inner wall and the outer wall of the running groove of the shear plate.
  • the invention also relates to a separate cutting member and a separate shear plate.
  • FIG. 1 is a sectional view taken on an axis of rotation of a cutting head together with its drive;
  • FIGS. 2 and 3 are a bottom view of a cutting head according to the invention.
  • FIG. 4 is a bottom of a cutting member according to the invention.
  • a shear plate 1 is provided with slots 2 and forms a running groove 3, in which a cutting member 4 is centered.
  • the sides 5 on the inner side ofthe cutting edges 6 are located on feet 7 of the cutting member 4 thereby providing the centering.
  • the cutting member 4 is driven by a shaft 8, which is provided at the top end with a flattened part 9, located in a corresponding opening 10 of the cutting member 4.
  • the shaft 9 is provided at the bottom end with a square 13, which is capable of moving in an axial direction in a gear wheel 14, to which it is secured in the direction of rotation.
  • a spring 15 holds the cutting member 4 against the shear plate 1.
  • the wall 16 is shaped in a form deviating from that of a circle and indicated by the broken line 17. Owing to the shape of the wall 16 the sides 18 and 19 can run along the outer wall 20 of the groove, so that the rolling-off phenomenon on one wall is prevented.
  • the sides 22 and 23 located on the same side of the center line 24 are ground off.
  • the sides 25 and 26 are therefore capable of engaging the outer wall 2i) of the running groove 3, so that the latter can be scraped clean throughout its width.
  • FIG. 4 shows the outlines 27 and 28 of the centering cutting edges.
  • the outline 28 is shaped in a form deviating from that of a circle 29 owing to grinding-01f of the sides 22 and 23.
  • a cutting head for use in a dry shaver comprising an apertured shear plate having a running groove, a rotatable cutting member coacting therewith and centered in said running groove, said shear plate being prm vided with centering walls, the sides of said cutting member adjacent to said centering walls being shaped in a substantially oval form.
  • a cutting head for use in a dry shaver comprising an apertured shear plate having a running groove, a rotatable cutting member coacting therewith and centered in said running groove, said cutting member having feet with sides provided with cutting edges wherein all sides located on one side of the center line of said cutting member are ground off on the inner side and said sides of said cutting member being substantially oval in shape.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Milling Processes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Knives (AREA)
US6478A 1959-02-20 1960-02-03 Cutting head for use in a dry shaving apparatus having an oval shape movable cutter Expired - Lifetime US3078571A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL236378 1959-02-20

Publications (1)

Publication Number Publication Date
US3078571A true US3078571A (en) 1963-02-26

Family

ID=19751584

Family Applications (1)

Application Number Title Priority Date Filing Date
US6478A Expired - Lifetime US3078571A (en) 1959-02-20 1960-02-03 Cutting head for use in a dry shaving apparatus having an oval shape movable cutter

Country Status (11)

Country Link
US (1) US3078571A (pl)
AT (1) AT222537B (pl)
BE (1) BE587768A (pl)
CH (1) CH385668A (pl)
DE (1) DE1111982B (pl)
DK (1) DK102015C (pl)
ES (1) ES255835A1 (pl)
FR (1) FR1248902A (pl)
GB (1) GB941133A (pl)
LU (1) LU38257A1 (pl)
NL (1) NL103479C (pl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890705A (en) * 1972-12-22 1975-06-24 Philips Corp Coupling pin for an electric dry-shaver
US4087909A (en) * 1972-07-20 1978-05-09 Sharp Kabushiki Kaisha Dry shaver

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10117942A1 (de) * 2001-04-10 2002-10-24 Oesterr Heraklith Gmbh Verfahren zur Herstellung eines Bauelementes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2229971A (en) * 1937-02-23 1941-01-28 American Safety Razor Corp Dry shaving razor
US2283865A (en) * 1938-06-10 1942-05-19 Casco Products Corp Shaving machine
US2337391A (en) * 1939-02-21 1943-12-21 Hartford Nat Bank & Trust Co Haircutting device
US2339831A (en) * 1938-08-24 1944-01-25 Tonnes C Andersen Shaving device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2229971A (en) * 1937-02-23 1941-01-28 American Safety Razor Corp Dry shaving razor
US2283865A (en) * 1938-06-10 1942-05-19 Casco Products Corp Shaving machine
US2339831A (en) * 1938-08-24 1944-01-25 Tonnes C Andersen Shaving device
US2337391A (en) * 1939-02-21 1943-12-21 Hartford Nat Bank & Trust Co Haircutting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087909A (en) * 1972-07-20 1978-05-09 Sharp Kabushiki Kaisha Dry shaver
US3890705A (en) * 1972-12-22 1975-06-24 Philips Corp Coupling pin for an electric dry-shaver

Also Published As

Publication number Publication date
GB941133A (en) 1963-11-06
DE1111982B (de) 1961-07-27
AT222537B (de) 1962-07-25
NL103479C (pl)
CH385668A (de) 1964-12-15
ES255835A1 (es) 1960-10-01
LU38257A1 (pl)
DK102015C (da) 1965-06-21
FR1248902A (fr) 1960-12-23
BE587768A (fr) 1960-08-18

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