US3456341A - Cutter head for dry shaving apparatus - Google Patents

Cutter head for dry shaving apparatus Download PDF

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Publication number
US3456341A
US3456341A US653405A US3456341DA US3456341A US 3456341 A US3456341 A US 3456341A US 653405 A US653405 A US 653405A US 3456341D A US3456341D A US 3456341DA US 3456341 A US3456341 A US 3456341A
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US
United States
Prior art keywords
cutter
cutters
cutter head
spring
lateral
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
US653405A
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English (en)
Inventor
Aldo Loner
Otto Meier
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.)
CARINTHIA ELEKTROGERAETE GmbH
Carinthia Elektrogerate Firma GmbH
Original Assignee
CARINTHIA ELEKTROGERAETE 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 CARINTHIA ELEKTROGERAETE GmbH filed Critical CARINTHIA ELEKTROGERAETE GmbH
Application granted granted Critical
Publication of US3456341A publication Critical patent/US3456341A/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
    • B26B19/10—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving two or more different types of reciprocating cutting elements, e.g. a pair of toothed shearing elements combined with a pair of perforated cutting elements or a combined toothed and perforated cutting assembly
    • B26B19/105—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving two or more different types of reciprocating cutting elements, e.g. a pair of toothed shearing elements combined with a pair of perforated cutting elements or a combined toothed and perforated cutting assembly with a secondary cutting unit being rotated into an operating position

Definitions

  • This invention relates to cutter heads for dry shaving apparatus, in which there are, arranged on a fame, a perforated cutter foil as upper cutter for the razor part, and, at least on one longitudinal edge of the frame, an upper cutter for a lateral trimmer, and these stationary upper cutters cooperate with reciprocatory driven lower cutters, pressed against them resiliently.
  • the lower cutter for the razor part, cooperating with the perforated cutter foil is made in one piece with the lower cutter for the lateral trimmer, so that both lower cutters can be driven together.
  • Springs acting on this unitary part forming the lower cutters provide for pressing against the associated upper cutters.
  • the spring bridge is advantageously made symmetrical with respect to its longitudinal centre line, and possibly also with reference to its transverse centre line, and can consist of a piece of sheet metal with a channel-like central part for the engagement of the driving member, and spring tongues jutting out on each side of the latter, lying substantially parallel alongside one another, while each two inflected, opposite spring tongues form a spring bar.
  • the resilient bars engaging with the one lower cutter should advantageously lie symmetrically to the resilient bars engaging the other lower cutter. In this way both lower cutters are equally pressed against their upper cutter and also uniformly driven, so that they perform an exactly lineal reciprocatory motion.
  • FIGURE 1 is an isometric in oblique view showing the principle of the support of the lower cutters, in a cutter head according to the invention
  • FIGURE 1a is an exploded view of the parts of the razor of FIGURE -1;
  • FIGURE lb is a cross-sectional view of the razor
  • FIGURE 2 shows, in a section taken outside the central plane running in the longitudinal direction, another arrangement of lower cutter together with a driving member
  • FIGURE 3 is a sectional view showing a complete cutter head, with a third arrangement.
  • FIGURE 4 is a sectional view showing a cutter head as a fourth arrangement in accordance with the invention arranged to tilt on the apparatus housing.
  • FIGURE 1 there is shown a lower cutter 1, which is intended to cooperate with a performed cutter foil 1a and which is curved cylindrically, and the cutting edges of which are formed by thin sheets, indicated simply by lines 2.
  • a bar 3 for stiffening of the lower cutter.
  • the lower cutter 4 of the lateral trimmer is formed like a rectangular frame 4.
  • the longitudinal parts 5 of this frame extend laterally beyond the lower cutter 1 and carry a row of cutter teeth 6.
  • a transverse member 7 forms in each case the connection of the two longitudinal members 5.
  • a leaf spring extending in the latters longitudinal direction from end face to end face, which in its central part has a channelshaped part running transverse to the longitudinal direction, with which the driving element, e.g. an oscillatory lever, cooperates, in order to impart to the lower cutter a reciprocating working movement. If the leaf spring is brought into cooperating connection with the driving element, it is deflected perpendicularly to the lower cutter in the direction towards the upper cutter, so that it is stressed, and thus exerts a component of force on the lower cutter, by which the latter is pressed against the upper cutter.
  • the driving element e.g. an oscillatory lever
  • such a leaf spring is associated with each lower cutter, and these leaf springs are, in the neighbourhood of their central parts, connected together, so that they form a unitary spring bridge 10.
  • the bridge has three spring bars or leaf springs, namely two outer leaf springs 8, 8' associated with the lower cutter 1, and a middle leaf spring 9 associated with the lower cutter 4.
  • Themiddle portion which is unitary with all the leaf springs, and with which the driving member (not shown), engages, is indicated at 11.
  • Each leaf spring is formed by two spring tongues jutting out in opposite directions fromthe central portion 11, e.g. the leaf spring 8 by the two spring tongues 8a and 8b. The ends of the leaf springs are fastened re-.
  • each lower cutter 1 and 4 is arranged to be resilient
  • FIGURE 2 shows an arrangement in which only one leaf spring 8 is associated with the lower cutter 1, and likewise only one leaf spring 9 with thelower cutter 4.
  • the leaf springs 8 and 9 are arranged to left and right from the central plane running longtiudinally through the lower cutter, conveniently closely alongside this.
  • the section taken in FIGURE 2 outside this central plane is taken through the leaf spring 8.
  • the driving member for the lower cutter is an oscillatory lever 12, having a cylindrically formed end 13 which engages in the channel-shaped central portion 11 of the spring bridge and thus transmits its swinging movement to the spring bridge and through the latter to the lower cutters 1 and 4.
  • each spring has a possibility of performing a displacement movement in its longitudinal direction. This is important, because small undesired stresses can arise in the spring-s, so soon as they are brought into driving connection with the driving member and thus are stressed.
  • the cutter head shown in FIGURE 3 has a razor portion with perforated cutter foil 20, and two latter trimmers, one lateral trimmer being a so-called open lateral trimmer 18 and the other a so-called closed lateral trimmer 19.
  • the upper cutters of these lateral trimmers are, in known manner, formed by the edge zones of the perforated cutter foil 20.
  • simple teeth are cut in the longitudinal edges 21 of'the perforated cutter foil to form the upper cutter for the open lateral trimmer 18, while the longitudinal edge 22 is formed with an angle and the teeth are made in this angle, so that with this part a closed lateral trimmer is produced.
  • the perforated cutter foil itself is fastened to the longitudinal bars 23 and 24 of the cutter head frame 25, and in fact it is engaged, by means of openings provided in it, on pins 26 arranged on the longitudinal bars 23, 24.
  • the lower cutter cooperating with the perforated cutter foil is again indicated at 1, and the frame-like lower cutter of the lateral trimmers at 4, while the latter on its longitudinal sides 5 has teeth 6.
  • Both the lower cutters are connected together by means of a spring bridge 10' with a common central portion 11, while a leaf spring 8 of this bridge provides the connection to the lower cutter of the razor part 1, and two leaf spring 9, 9', which are arranged symmetrically close to the spring 8, provide the connection to the lower cutter 4 of the lateral trimmers.
  • a U-shaped stirrup 27 To hold the lower cutters 1, 4 in the cutter head there is provided a U-shaped stirrup 27.
  • the side faces 28 of this stirrup have projections 29 to form catches, which cooperate with corresponding recesses in the end faces of the frame of the cutter head, and in fact on insertion of the stirrup in the cutter head frame these projections catch in the recesses and thus define the position of the stirrup.
  • a base portion of the stirrup 27 is formed by two bars 30 and 31.
  • the lower cutter 4 of the lateral trimmer-s itself has two bent-out tabs 32 and 33.
  • the spacing of the bars 30 and 31 from one another is so chosen that these bars, on assembly of the stirrup 27 with the lower cutter from the side turned away from the perforated cutter foil, come to lie laterally adjacent to the tabs 32 and 33.
  • the stirrup in addition to forming the mounting of the lower cutters 1, 4 in the cutter head, also acts as a lateral guide for the lower cutter 4 of the lateral trimmers.
  • Such a guide is particularly important, for thus the teeth 6 of the lower cutter of the lateral trimmers,
  • FIGURE 4 there is shown a cutter head together with an apparatus housing 34.
  • the cutter head is in this case arranged to tilt on the apparatus housing, between the operative position and a position tilted through about in which it is shown in the figure. -By this means the device can be cleaned in a simple manner.
  • a spring tab 35 is arranged at each of the end faces of the apparatus housing, which carries a stub shaft 36, which extedns into a corresponding opening in the end face of the cutter head frame 25. To connect the cutter head with the apparatus housing, these spring tabs are bent away from one another and the cutter head is fitted onto the stub axles.
  • the cutter head itself also consists 'of a cutter head frame 25, onto longitudinal bars 23- and 24 of which the perforated cutter foil 20 is fastened by means of pins 26.
  • the lower cutter 1 cooperates with this perforated cutter foil.
  • the cutter head according to FIGURE 4 has only one open lateral trimmer 38.
  • the upper cutter of this lateral trimmer is formed by a ledge 39 jutting out laterally from the longitudinal bar 23, in which cutter teeth 40 are made.
  • the cutting surface 41 of the upper cutter then travels in the base plane 42 of the cutter head frame, so that it can simply be made by grinding of the base plane.
  • the lower cutter 4 of the lateral trimmer is also made frame-like.
  • the cutter head construction described above is particularly advantageous, because, compared with the construction according to FIGURE 3, a total separation exists between the perforated cutter foil and the upper cutter of the lateral trimmer. Thus any interacting influence of these cutter parts via the upper cutters is also avoided. Further, the fact that the lower cutter of the lateral trimmer solely engages with a massive component, namely the cutter head frame, leads to a satisfactory cooperation of the upper and lower cutter of the lateral trimmer. In this way a very good cutting action results in both cutter parts. Nevertheless, the total construction is, however, simple, because the drive of the lower cutters takes place in common.
  • FIGURE 4 there is also visible the driving member for the lower cutters in the form of an oscillating lever 12.
  • cylindrical portion 13 remains, both in operating position, and also in the tilted position of the cutter head as shown, in engagement with the channel-shaped central portion 11 of the resilient bridge 10.
  • the part 13 is in operative connection with the central region of the channel-shaped middle portion 11 of the Spring bridge, so that the driving force operates symmetrically or equally on the leaf springs 8, 8 and 9.
  • stirrup 44 which can be introduced into the concavity of the lower cutter 1, and after insertion of the lower cutter into the cutter head frame can be fixed to the end faces of the cutter head frame by means of catch devices arranged laterally on it.
  • cutter head according to FIGURE 4 could also be made with two open lateral trimmers, or the form of the spring bars could be altered in various ways.
  • a cutter head for dry shaving apparatus including a razor part and a lateral trimmer, said part and trimmer each comprising a stationary upper cutter and reciprocatory lower cutters, the upper cutter of the razor part being a perforated cutter foil, and the lower cutters being components separate from one another, a frame supporting both said cutters, and a unitary spring bridge adapted to press both said lower cutters upwards against the respective upper cutter and to transmit reciprocatory motion to the lower cutters, said spring bridge comprising a middle part adapted to receive a reciprocatory drive and three spring bars each of which extends longitudinally from end to end of the lower cutters, one of said bars being connected to one of said lower cutters and the other two of said bars being connected to the other of said lower cutters.
  • a cutter head in which said spring bridge is a piece of sheet metal, said middle part is a transverse channel in said sheet metal, and each of said spring bars is constituted by two tongues of said sheet metal, extending in opposite directions from said middle part.
  • a cutter head in which a first end of each of said spring bars is attached to a respective one of said lower cutters in a manner to transmit reciprocatory motion while a second, opposite, end of each of said bars imparts only pressing force to a respective lower cutter.
  • a cutter head including a U-shaped stirrup having side surfaces and a base constituted by two bars which engage beneath the lower cutter of said lateral trimmer, means releasably latching said side surfaces to said frame, and means on said lower cutter of said laterial trimmer locating said bars laterally.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Scissors And Nippers (AREA)
US653405A 1966-08-12 1967-07-14 Cutter head for dry shaving apparatus Expired - Lifetime US3456341A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT774666A AT264319B (de) 1966-08-12 1966-08-12 Scherkopf für Trockenrasierapparate

Publications (1)

Publication Number Publication Date
US3456341A true US3456341A (en) 1969-07-22

Family

ID=3599079

Family Applications (2)

Application Number Title Priority Date Filing Date
US653405A Expired - Lifetime US3456341A (en) 1966-08-12 1967-07-14 Cutter head for dry shaving apparatus
US842110A Expired - Lifetime US3550281A (en) 1966-08-12 1969-07-16 Electric shavers

Family Applications After (1)

Application Number Title Priority Date Filing Date
US842110A Expired - Lifetime US3550281A (en) 1966-08-12 1969-07-16 Electric shavers

Country Status (7)

Country Link
US (2) US3456341A (de)
AT (1) AT264319B (de)
CH (1) CH450958A (de)
DE (1) DE1553673A1 (de)
ES (1) ES342441A1 (de)
GB (1) GB1126516A (de)
NL (1) NL6708456A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3774300A (en) * 1968-07-22 1973-11-27 Philips Corp Cutter head for dry-shavers
US3855697A (en) * 1972-03-01 1974-12-24 Philips Corp Shaving head for dry-shaving apparatus
US3950847A (en) * 1973-07-10 1976-04-20 U.S. Philips Corporation Dry shaver
US4110906A (en) * 1976-07-07 1978-09-05 U.S. Philips Corporation Shaving head for a dry-shaving apparatus
US5131148A (en) * 1990-11-23 1992-07-21 Wahl Clipper Corporation Electric shaver with flexible cutter holder
US5909929A (en) * 1997-07-30 1999-06-08 Chen; Chin-Chuan Supporting bracket for a middle cutter of a shaver
US20070220756A1 (en) * 2002-10-08 2007-09-27 Royle Terence G Shaving system for performing multiple shaving actions
US20070245565A1 (en) * 2006-04-25 2007-10-25 Matsushita Electric Works, Ltd. Inner cutter of electric shaver and reciprocating electric shaver
US20080216320A1 (en) * 2002-10-08 2008-09-11 Royle Terence G Shaving system for performing multiple shaving actions
US20120005900A1 (en) * 2010-07-10 2012-01-12 Andreas Erndt Electrically operated shaver with replaceable cutting device
US20120060382A1 (en) * 2009-05-28 2012-03-15 Koninklijke Philips Electronics N.V. Pivoting arrangement
US20210347069A1 (en) * 2020-05-08 2021-11-11 Braun Gmbh Electric beard trimmer
US20250001628A1 (en) * 2023-06-29 2025-01-02 Braun Gmbh Hair cutter
US12466092B2 (en) 2020-05-08 2025-11-11 Braun Gmbh Electric beard trimmer

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3704518A (en) * 1970-09-08 1972-12-05 Gerhard Heyek Cutter head for dry shaving apparatus
US3869790A (en) * 1973-07-30 1975-03-11 Sperry Rand Corp Hair trimmer
NL8400037A (nl) * 1984-01-05 1985-08-01 Philips Nv Trimmer.
DE3721243A1 (de) * 1987-06-27 1989-01-12 Braun Ag Rasierapparat mit einem schwenkbaren scherkopfsystem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1125027A (fr) * 1955-04-20 1956-10-23 Rasoir à moteur à mouvement alternatif
US2975516A (en) * 1957-07-12 1961-03-21 Heyek Gerhard Dry shaver head construction for cutting long and short hair
US3213535A (en) * 1961-05-31 1965-10-26 Carinthia Elektrogerate Ges M Dry shaver head construction for cutting long and short hair
US3343258A (en) * 1965-06-15 1967-09-26 Carinthia Elektrogerate Ges M Dry shaver with elastically deformable cutter foil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1125027A (fr) * 1955-04-20 1956-10-23 Rasoir à moteur à mouvement alternatif
US2975516A (en) * 1957-07-12 1961-03-21 Heyek Gerhard Dry shaver head construction for cutting long and short hair
US3213535A (en) * 1961-05-31 1965-10-26 Carinthia Elektrogerate Ges M Dry shaver head construction for cutting long and short hair
US3343258A (en) * 1965-06-15 1967-09-26 Carinthia Elektrogerate Ges M Dry shaver with elastically deformable cutter foil

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3774300A (en) * 1968-07-22 1973-11-27 Philips Corp Cutter head for dry-shavers
US3855697A (en) * 1972-03-01 1974-12-24 Philips Corp Shaving head for dry-shaving apparatus
US3950847A (en) * 1973-07-10 1976-04-20 U.S. Philips Corporation Dry shaver
US4110906A (en) * 1976-07-07 1978-09-05 U.S. Philips Corporation Shaving head for a dry-shaving apparatus
US5131148A (en) * 1990-11-23 1992-07-21 Wahl Clipper Corporation Electric shaver with flexible cutter holder
US5909929A (en) * 1997-07-30 1999-06-08 Chen; Chin-Chuan Supporting bracket for a middle cutter of a shaver
US8109001B2 (en) 2002-10-08 2012-02-07 The Gillette Company Shaving system for performing multiple shaving actions
US20080216320A1 (en) * 2002-10-08 2008-09-11 Royle Terence G Shaving system for performing multiple shaving actions
US20070220756A1 (en) * 2002-10-08 2007-09-27 Royle Terence G Shaving system for performing multiple shaving actions
US20070245565A1 (en) * 2006-04-25 2007-10-25 Matsushita Electric Works, Ltd. Inner cutter of electric shaver and reciprocating electric shaver
US8146253B2 (en) * 2006-04-25 2012-04-03 Panasonic Corporation Inner cutter of electric shaver and reciprocating electric shaver
US9676108B2 (en) * 2009-05-28 2017-06-13 Koninklijke Philips N.V. Pivoting arrangement
US20120060382A1 (en) * 2009-05-28 2012-03-15 Koninklijke Philips Electronics N.V. Pivoting arrangement
CN102985236A (zh) * 2010-07-10 2013-03-20 博朗公司 具有可替换的切割装置的电动剃刀
CN102985236B (zh) * 2010-07-10 2016-10-26 博朗公司 具有可替换的切割装置的电动剃刀
US20120005900A1 (en) * 2010-07-10 2012-01-12 Andreas Erndt Electrically operated shaver with replaceable cutting device
US20210347069A1 (en) * 2020-05-08 2021-11-11 Braun Gmbh Electric beard trimmer
CN115515767A (zh) * 2020-05-08 2022-12-23 博朗有限公司 电动胡须修剪器
US12466092B2 (en) 2020-05-08 2025-11-11 Braun Gmbh Electric beard trimmer
US12661818B2 (en) * 2020-05-08 2026-06-23 Braun Gmbh Electric beard trimmer
US20250001628A1 (en) * 2023-06-29 2025-01-02 Braun Gmbh Hair cutter
US20250001626A1 (en) * 2023-06-29 2025-01-02 Braun Gmbh Hair cutter

Also Published As

Publication number Publication date
DE1553673A1 (de) 1971-07-01
GB1126516A (en) 1968-09-05
US3550281A (en) 1970-12-29
ES342441A1 (es) 1968-07-16
AT264319B (de) 1968-08-26
CH450958A (de) 1968-05-15
NL6708456A (de) 1968-02-13

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