US3111755A - Hair cutting apparatus preventing wedging of cut hairs between the cutting comb and the cutting knife of the apparatus - Google Patents

Hair cutting apparatus preventing wedging of cut hairs between the cutting comb and the cutting knife of the apparatus Download PDF

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Publication number
US3111755A
US3111755A US90743A US9074361A US3111755A US 3111755 A US3111755 A US 3111755A US 90743 A US90743 A US 90743A US 9074361 A US9074361 A US 9074361A US 3111755 A US3111755 A US 3111755A
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US
United States
Prior art keywords
cutting
comb
teeth
edge portion
gaps
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
US90743A
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English (en)
Inventor
Futterer Bodo
Messinger Werner
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.)
Braun GmbH
Original Assignee
Braun GmbH
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 Braun GmbH filed Critical Braun GmbH
Application granted granted Critical
Publication of US3111755A publication Critical patent/US3111755A/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
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • B26B19/06—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving co-operating cutting elements both of which have shearing teeth

Definitions

  • the invention relates to the special construction of a long hair cutting part for dry shaving apparatuses with two toothed cutting path parts i.e. a stationary part, the so-called cutting comb, and the so-called cutting knife which is adapted to reciprocate and which is resiliently pressed against the cutting comb.
  • the long hair cutting part according to the invention can either be arranged as a direct-cutting head which can be mounted and dismounted on the perforated cutting head of a dry shaving apparatus or can be arranged to be separately switched on or off. As a separate constructional part it is equivalent to a hair cutting machine.
  • the invention has the object of providing a long hair cutting part which prevents these drawbacks and both avoids hindrance of the cutting operation through hairs which have been cut off and ensures a steady and reliable sliding guidance of the two cutting path parts on one another, not only at the rows of teeth.
  • the tooth gaps of the other cutting path part preferably the cutting comb
  • the tooth gaps of the other cutting path part terminate in front of this edge in such manner that the longer teeth slide over a portion of their length on the continuous back of the other cutting path part.
  • the hair thus leaves the cutting point directly after it has ben cut off.
  • cut-off hairs were to get in position between the cutting surfaces they would then very rapidly fall out again through the deeper tooth gaps.
  • the movable cutting knife is suitably pressed against 3,1 11,755 Patented Nov. 26, 1963 the cutting comb by at least three helical springs which are preferably tapered, one of these springs engaging at a point halfway along the length of the cutting knife while the other two springs are disposed near the outer edges of the cutting knife and symmetrically to the center thereof.
  • This has the advantage that the specifc pressure between cutting comb and cutting knife is equal at any tooth, which ensures an equally good cutting effect over the whole toothed length.
  • FIGURE 1 is a cross-section through a long hair cutting part taken along the line 11 of FIGURE 2.
  • FIGURE 2 is a longitudinal section of the long hair cutting part taken along the line II-II of FIGURE 1.
  • the housing of the shaving apparatus indicated by 1, has screwed to it by means of two threaded bolts 4 the two cutting path parts i.e. the stationary cutting comb 2 and the reciprocating cutting knife 3.
  • the movable cutting :nife 3 has a follower or entrainment element 5 by means of which it is driven, for example by the oscillating lever of an oscillating armature motor, and also two elongated apertures 6 with which it is guided on the threaded bolts.
  • the gaps between the cutting teeth 7 of the cutting knife extend considerably further back than the gaps between the teeth 8 of the cutting comb, the points of the teeth '7 of the cutting knife standing back to a certain extent with respect to the cutting comb.
  • the cutting knife is so bent at its toothed surface that a hair 9 which has been cut off can pass into the gap 10 between the cutting parts instead of becoming squashed and lifting the cutting knife from the cutting comb; this happens in such a way that the hair can then fall out as indicated by 9' in FIGURE 1.
  • a sufliciently broad slide path a is provided on the back of the cutting comb on which slide path the teeth of the cutting knife can slide over a portion of their length. In this way all conditions are satisfied for an efiicient cutting action.
  • a stationary plate-shaped member formed along a front edge portion thereof with closely adjacent teeth extending into said plate-shaped member and being separated by gaps; and a reciprocable plate-shaped member having an edge portion abutting against said front edge portion of said stationary plate-shaped member and being formed in said edge portion with closely adjacent teeth separated by gaps, said edge portions of said members abutting against each other forwardly of a rear contact line and the remainders of said plate-shaped members being spaced from each other in the region rearwardly of said rear contact line, the gaps between the teeth in one of said members extending rearwardly beyond said rear contact line communicating with the space between the remainders of said plate-shaped members so as to prevent wedging of the cut hair and the gaps between the teeth in the other member ending forwardly of said rear contact line so that said other of said members has an uninterrupted surface portion abutting against and engaging said teeth of said one member resulting in a firm guiding of said members relative to each other during reciprocation thereof.
  • a stationary plate-shaped cutting comb having a front edge portion and a rear edge portion and being formed along said front edge portion thereof with closely adjacent teeth extending into said plate-shaped cutting comb and being separated by gaps; and a reciprocable plate-shaped cutting knife having an edge portion abutting against said front edge portion of said stationary cutting comb and being offset with respect to the remainder of the cutting knife along a line located rearwardly of the ends of the gaps between the teeth in said cutting comb, said cutting knife being formed in said edge portion thereof with closely adjacent teeth separated by gaps extending beyond said line into the remainder of the plate-shaped cutting knife, said cutting knife being formed at a rear edge thereof with a flange projecting toward and engaging said rear edge portion of said cutting comb so that said cutting knife is guided during its reciprocation along uninterrupted surfaces of said edge portions of said cutting comb and whereby due to the extension of said gaps between said teeth in said cutting knife beyond said offsetting line Wedging of cut hairs against said uninterrupted surface, which would lead to an undesirable separation of said edge
  • a hair cutting apparatus comprising, in combination, support means; a plate-shaped cutting comb stationarily mounted on said support means, said cutting comb having a front edge portion and a rear edge portion and being formed along said front edge portion with a plurality of closely adjacent teeth extending into said plate-shaped cutting comb and being separated by gaps; a plateshaped cutting knife mounted on said support means between the latter and said cutting comb and having a front edge portion abutting against said front edge portion of said cutting comb, said front edge portion of said cutting knife being offset with respect to the remainder thereof along a line located rearwardly of the ends of the gaps between the teeth in said cutting comb and said cutting knife being formed in said front edge portion thereof with closely adjacent teeth separated by gaps extending beyond said line into the remainder of said plate-shaped cutting knife, said cutting knife being mounted on said support means for reciprocation in a direction transverse to said teeth and being formed at a rear edge thereof with a flange projecting toward and engaging said rear edge portion of said cutting comb so that said cutting knife is guided during the reciprocation

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
US90743A 1960-02-20 1961-02-21 Hair cutting apparatus preventing wedging of cut hairs between the cutting comb and the cutting knife of the apparatus Expired - Lifetime US3111755A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB56751A DE1113393B (de) 1960-02-20 1960-02-20 Langhaarschneidteil fuer Trockenrasier-apparate

Publications (1)

Publication Number Publication Date
US3111755A true US3111755A (en) 1963-11-26

Family

ID=6971449

Family Applications (1)

Application Number Title Priority Date Filing Date
US90743A Expired - Lifetime US3111755A (en) 1960-02-20 1961-02-21 Hair cutting apparatus preventing wedging of cut hairs between the cutting comb and the cutting knife of the apparatus

Country Status (5)

Country Link
US (1) US3111755A (de)
CH (1) CH383824A (de)
DE (1) DE1113393B (de)
FR (1) FR1280473A (de)
GB (1) GB928212A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3672049A (en) * 1970-10-22 1972-06-27 Sperry Rand Corp Hair trimmer attachment for electric shavers
US3729821A (en) * 1970-04-24 1973-05-01 Braun Ag Dryshaver with removable long-hair cutter assembly
US3844035A (en) * 1970-07-20 1974-10-29 Moser K Gmbh Fa Pivotally mounted long hair trimmer
US4262415A (en) * 1978-08-24 1981-04-21 Braun Aktiengesellschaft Hair trimmer
EP1867446A1 (de) * 2006-06-16 2007-12-19 Matsushita Electric Works, Ltd. Haarschneidemaschine
US20180099427A1 (en) * 2015-04-28 2018-04-12 Koninklijke Philips N.V. Blade set and hair cutting appliance

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS566069Y2 (de) * 1974-09-13 1981-02-09

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2292438A (en) * 1938-06-21 1942-08-11 Remington Rand Inc Electric dry shaver
US2370543A (en) * 1943-05-03 1945-02-27 Chicago Flexible Shaft Co Shaving implement
US2391695A (en) * 1944-04-28 1945-12-25 Benjamin F Flegel Dry shaver clipper attachment
US2873520A (en) * 1956-03-14 1959-02-17 Ronson Corp Power driven shaver and hair trimmer
US2917824A (en) * 1957-05-16 1959-12-22 Apag Appbau A G Reciprocating dry shaver having stationary first cutting head means and extensible second cutting head means

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1397721A (en) * 1919-03-03 1921-11-22 Andrew Niland Hair-clipper
US2280348A (en) * 1940-11-02 1942-04-21 Oster John Mfg Co Hair clipper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2292438A (en) * 1938-06-21 1942-08-11 Remington Rand Inc Electric dry shaver
US2370543A (en) * 1943-05-03 1945-02-27 Chicago Flexible Shaft Co Shaving implement
US2391695A (en) * 1944-04-28 1945-12-25 Benjamin F Flegel Dry shaver clipper attachment
US2873520A (en) * 1956-03-14 1959-02-17 Ronson Corp Power driven shaver and hair trimmer
US2917824A (en) * 1957-05-16 1959-12-22 Apag Appbau A G Reciprocating dry shaver having stationary first cutting head means and extensible second cutting head means

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729821A (en) * 1970-04-24 1973-05-01 Braun Ag Dryshaver with removable long-hair cutter assembly
US3844035A (en) * 1970-07-20 1974-10-29 Moser K Gmbh Fa Pivotally mounted long hair trimmer
US3672049A (en) * 1970-10-22 1972-06-27 Sperry Rand Corp Hair trimmer attachment for electric shavers
US4262415A (en) * 1978-08-24 1981-04-21 Braun Aktiengesellschaft Hair trimmer
EP1867446A1 (de) * 2006-06-16 2007-12-19 Matsushita Electric Works, Ltd. Haarschneidemaschine
US20070289144A1 (en) * 2006-06-16 2007-12-20 Matsushita Electric Works, Ltd. Hair clipper
US8146254B2 (en) 2006-06-16 2012-04-03 Panasonic Electric Works Co., Ltd. Hair clipper
US20180099427A1 (en) * 2015-04-28 2018-04-12 Koninklijke Philips N.V. Blade set and hair cutting appliance
US10682777B2 (en) * 2015-04-28 2020-06-16 Koninklijke Philips N.V. Blade set and hair cutting appliance

Also Published As

Publication number Publication date
GB928212A (en) 1963-06-12
CH383824A (de) 1964-10-31
FR1280473A (fr) 1961-12-29
DE1113393B (de) 1961-08-31

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