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US2815571A - Multiple cutter rotary shaver having uninterrupted shaving surface - Google Patents

Multiple cutter rotary shaver having uninterrupted shaving surface Download PDF

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Publication number
US2815571A
US2815571A US575465A US57546556A US2815571A US 2815571 A US2815571 A US 2815571A US 575465 A US575465 A US 575465A US 57546556 A US57546556 A US 57546556A US 2815571 A US2815571 A US 2815571A
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US
United States
Prior art keywords
uninterrupted
shaving
multiple cutter
cutter rotary
shaving surface
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
US575465A
Inventor
Brentani Ottone
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Individual
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Priority to US575465A priority Critical patent/US2815571A/en
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Publication of US2815571A publication Critical patent/US2815571A/en
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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 refers to the shaving head for shavers, and more particularly to the arrangement (position) of the rotary cutters. These cutters, numbering two or more, are placed in line or in a triangle, a quadrangle or any other geometrical figure.
  • the shaving head is further characterized essentially by the fact that the courses of said rotary cutters intersect each other, forming cross points, as happens in the case of the teeth of gears.
  • Figure l is a view in vertical cross section of a shaving head in accordance with the invention, with a fragmentary view of the body of the shaver;
  • Figure 2 is a top plan view of the perforated contact plate or comb
  • Figure 3 is a view in horizontal section taken along line AA of Figure 1;
  • Figure 4 is a detailed view of one of the cutters as seen along section line BB of Figure 3;
  • Figure 5 is a perspective view corresponding to Figure 3.
  • the shaving head includes a perforated contact plate or comb 1 disposed above three rotary cutters each indicated at 2.
  • Rotary cutters 2 each have a cutting edge 8.
  • Each cutter is mounted on a separate drive shaft 3, the three shafts being parallel to each other.
  • the axes of the drive shafts 3 all lie in a common plane, the upper ends of the three shafts lying on the same straight line.
  • the distance between the shafts 3 is such that the courses of the rotary cutters intersect each other in cross points so as to form one uninterrupted shaving band or surface.
  • the cutters 2 are held in position with respect to shaver 5 by a retainer 4.
  • a retaining spring 6 and a plastic cap 7 are also provided for the shaving head.
  • This invention offers actual advantages, of a technical and practical nature, over shaving heads for shavers having two or more rotary cutters, and having parallel shafts, in which the distance between the centers of shafts is greater than twice the radius of the cutters, thus causing the formation of individual shaving bands, and preventing the formation of one continuous (uninterrupted) shaving band.
  • Shaving head for shaver consisting of two or more retary cutters wih parallel shafts, arranged in line or in any geometrical figure, characterized by the fact that the courses of the rotary cutters intersect each other, forming cross points, so as to constitute one continuous shaving band.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)

Description

Dec, 10, 1957 o. BRENTANI 2,815,571
MULTIPLE CUTTER ROTARY SHAVER HAVING UNINTERRUPTED SHAVING SUR FACE Filed April 2, 1956 -2 Sheets-Sheet 1 INVENTOR Orro/vg 15, 66 4 0% LWw ATTORNEY Dec. 10, 1957 o. BRENTANI 2,815,571 MULTIPLE CUTTER ROTARY SHAVER HAVING UNINTERRUPTED SHAVING SURFACE Filed April 2, 1956 2 Sheets-Sheet 2 PIG.5
INVENTOR [firm/v6 [fee/v74 A ZZ-LQ-K &
ATTORNEY United States Patent flice 2,815,571 Patented Dec. 10, 1957 MULTIPLE CUTTER ROTARY SHAVER HAVING UNINTERRUPTED SHAVING SURFACE Ottone Brentani, Sao Paulo, Brazil Application April 2, 1956, Serial No. 575,465 1 Claim. (Cl. 30-43) This invention refers to the shaving head for shavers, and more particularly to the arrangement (position) of the rotary cutters. These cutters, numbering two or more, are placed in line or in a triangle, a quadrangle or any other geometrical figure. The shaving head is further characterized essentially by the fact that the courses of said rotary cutters intersect each other, forming cross points, as happens in the case of the teeth of gears.
Figure l is a view in vertical cross section of a shaving head in accordance with the invention, with a fragmentary view of the body of the shaver;
Figure 2 is a top plan view of the perforated contact plate or comb;
Figure 3 is a view in horizontal section taken along line AA of Figure 1;
Figure 4 is a detailed view of one of the cutters as seen along section line BB of Figure 3; and
Figure 5 is a perspective view corresponding to Figure 3.
Referring now to the drawings, the shaving head includes a perforated contact plate or comb 1 disposed above three rotary cutters each indicated at 2. Rotary cutters 2 each have a cutting edge 8. Each cutter is mounted on a separate drive shaft 3, the three shafts being parallel to each other. In the illustrated embodiment, the axes of the drive shafts 3 all lie in a common plane, the upper ends of the three shafts lying on the same straight line. The distance between the shafts 3 is such that the courses of the rotary cutters intersect each other in cross points so as to form one uninterrupted shaving band or surface. The cutters 2 are held in position with respect to shaver 5 by a retainer 4. A retaining spring 6 and a plastic cap 7 are also provided for the shaving head.
This invention, therefore, offers actual advantages, of a technical and practical nature, over shaving heads for shavers having two or more rotary cutters, and having parallel shafts, in which the distance between the centers of shafts is greater than twice the radius of the cutters, thus causing the formation of individual shaving bands, and preventing the formation of one continuous (uninterrupted) shaving band.
What is claimed:
Shaving head for shaver, consisting of two or more retary cutters wih parallel shafts, arranged in line or in any geometrical figure, characterized by the fact that the courses of the rotary cutters intersect each other, forming cross points, so as to constitute one continuous shaving band.
No references cited.
US575465A 1956-04-02 1956-04-02 Multiple cutter rotary shaver having uninterrupted shaving surface Expired - Lifetime US2815571A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US575465A US2815571A (en) 1956-04-02 1956-04-02 Multiple cutter rotary shaver having uninterrupted shaving surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US575465A US2815571A (en) 1956-04-02 1956-04-02 Multiple cutter rotary shaver having uninterrupted shaving surface

Publications (1)

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US2815571A true US2815571A (en) 1957-12-10

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Family Applications (1)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965966A (en) * 1958-10-27 1960-12-27 Joseph H Jacobs Electric razor with multiple rotary cutter head and oscillating combs
US3032873A (en) * 1957-09-20 1962-05-08 Philips Corp Dry-shaver comprising a hinged cutting plate
US3067791A (en) * 1959-01-08 1962-12-11 Fmc Corp Rotary peeling cutter
US3070884A (en) * 1957-08-21 1963-01-01 Philips Corp Mounting plate protective member for dry shaver head
US3078570A (en) * 1959-05-19 1963-02-26 Philips Corp Detachable fastening means for attaching shaver head to dry shaver housing
US3081541A (en) * 1959-05-26 1963-03-19 Philips Corp Head mount for dry shaver
US3129507A (en) * 1960-02-29 1964-04-21 Ralph L Tweedale Orbital dry shaver and cutting head therefor
US3154851A (en) * 1962-07-30 1964-11-03 Carl E Erickson Electric shaver
US3158932A (en) * 1962-08-01 1964-12-01 Ivo H Brewer Multiple cutter shaver having continuous shaving surface
US3191296A (en) * 1963-01-14 1965-06-29 Sperry Rand Corp Cutter head attachment means

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3070884A (en) * 1957-08-21 1963-01-01 Philips Corp Mounting plate protective member for dry shaver head
US3032873A (en) * 1957-09-20 1962-05-08 Philips Corp Dry-shaver comprising a hinged cutting plate
US2965966A (en) * 1958-10-27 1960-12-27 Joseph H Jacobs Electric razor with multiple rotary cutter head and oscillating combs
US3067791A (en) * 1959-01-08 1962-12-11 Fmc Corp Rotary peeling cutter
US3078570A (en) * 1959-05-19 1963-02-26 Philips Corp Detachable fastening means for attaching shaver head to dry shaver housing
US3081541A (en) * 1959-05-26 1963-03-19 Philips Corp Head mount for dry shaver
US3129507A (en) * 1960-02-29 1964-04-21 Ralph L Tweedale Orbital dry shaver and cutting head therefor
US3154851A (en) * 1962-07-30 1964-11-03 Carl E Erickson Electric shaver
US3158932A (en) * 1962-08-01 1964-12-01 Ivo H Brewer Multiple cutter shaver having continuous shaving surface
US3191296A (en) * 1963-01-14 1965-06-29 Sperry Rand Corp Cutter head attachment means

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