US3213536A - Dry shaver having two independent shearing means with means to drive each shearing means separately - Google Patents

Dry shaver having two independent shearing means with means to drive each shearing means separately Download PDF

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Publication number
US3213536A
US3213536A US299509A US29950963A US3213536A US 3213536 A US3213536 A US 3213536A US 299509 A US299509 A US 299509A US 29950963 A US29950963 A US 29950963A US 3213536 A US3213536 A US 3213536A
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US
United States
Prior art keywords
cutter
coupling
cutting
shaft
casing
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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
US299509A
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English (en)
Inventor
Futterer Bodo
Wich Robert
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
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Filing date
Publication date
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Publication of US3213536A publication Critical patent/US3213536A/en
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Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D21/00—Systems comprising a plurality of actuated clutches
    • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
    • 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
    • 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
    • B26B19/107—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 means for selectively engaging the drive for a fixed-position secondary cutting unit
    • 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
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive

Definitions

  • the present invention has particular application in respect to power-driven dry shavers having rotating drives with a rotatable element, such as a shaft, which may be selectively rotated in opposite directions.
  • the invention relates to a coupling drive for devices of this nature and in particular to a shaver construction which includes a usual cutter for cutting short hair and an additional cutter for long hair or for trimming.
  • Shavers have been constructed with separate short hair and long hair cutting elements which are either permanently secured with the casing or which can be detached therefrom.
  • shavers of this type the short hair cutter is driven by an electric motor through a drive which does not permit its disconnection.
  • an associated short hair cutter may be connected or removed from the drive, but in all instances the short hair cutter operates when the electric motor is connected.
  • the dry shaver casing can be selectively fitted with different exchangeable cutting heads of different cutting characteristics, that is, the casing may be fitted with a head for short hair cutting or with a head for trimming purposes. It is also known to arrange a trimmer assembly at the detachable head frame of a shaver casing, the head frame being mountable on the casing in two different positions in one of which the trimmer is coupled with the drive of the casing, while in the other it will be out of engagement with the drive (in the opposite position.)
  • improved coupling devices are provided which overcome the disadvantages of the prior art. These coupling devices are particularly applicable for use with a dry shaver of the type having permanent short hair and long hair cutters and having a drive which may be selectively operated in opposite rotational directions.
  • a coupling constructed in accordance with the invention includes a double armed coupling pawl which is carried on a follower which is affixed to a driving shaft which shaft may be selectively rotated in either direction.
  • the double arm coupling pawl is effective to engage with teeth formed on a first rotatable drive wheel member which is arranged to drive a first cutting element when the shaft is rotated in one direction, and the pawl is arranged so that it will engage the teeth of a second drive wheel member for driving a second cutting element when the shaft is rotated in an opposite direction.
  • a further object of the invention is to provide a dry shaver having means for selectively operating one or two cutters.
  • a further object of the invention is to provide a dry shaver having a long hair cutter and a trimmer for short hair and including coupling means connected to a shaft which is selectively rotatable in either direction, the coupling means being such that upon rotation of the shaft in one direction the first cutter is operated, and upon rotation of the shaft in the opposite direction the second cutter is operated.
  • a further object of the invention is to provide a shaver having a rotatable shaft driven by an electric power source which is rotatable in one direction for driving a first cutter for short hair cutting and is rotatable in an opposite direction for driving a second cutter for long hair or trimming operation.
  • a further object is to provide an electric shaver with short and long hair cutters which may be operated independently under the control of a switch.
  • a further object of the invention is to provide a dry shaver and a coupling construction which are simple in design, rugged in construction and economical to manfacture.
  • FIG. 1 is a longitudinal section of a coupling for a dry shaver constructed in accordance with the invention
  • FIG. 2 is a section similar to FIG. 1 but offset by about relative to FIG. 1;
  • FIG. 3 is a section taken on the line 3-3 of FIG. 1;
  • FIG. 4 is a partial longitudinal section of a shaver constructed in accordance with the invention.
  • FIG. 5 is a section taken on the line 5-5 of FIG. 4.
  • coupling means or a coupling device generally designated for a dry shaver constructed in accordance with the invention, as indicated in FIGS. 1 to 3, includes a follower 2 which is affixed to a drive shaft 1 for rotation therewith and pawl means or a double armed pawl generally designated 4 which is engageable with one of two drive wheels in accordance with the direction of rotation of the shaft 1.
  • the follower 2 is bifurcated and includes two radially extending arm portions 3 and 3 which form bearing supports for a rotatable pin 3a which carries the doublearmed coupling pawl 4.
  • the drive shaft 1 may be ro tated in either direction, and when so rotated correspondingly rotates the follower 2 which carries the doublearmed coupling pawl 4.
  • the double-armed pawl 4 is mounted adjacent drive wheels generally designated 9 and 19 which are freely rotatable about the drive shaft 1.
  • Each of the drive wheels 9 and 10 includes in terior annular gearing or ratchet teeth elements 7, for the wheel 9, and 8, for the wheel 10.
  • the double-armed coupling pawl 4 includes a first arm or arm portion which is engaged in recesses 7a between internal teeth 7 of the wheel 9 when the shaft 1 is rotated in one direction of rotation.
  • the double-armed coupling pawl 4 further includes a second arm or arm portion 6 which will engage in recesses 8a between internal teeth 8 of the drive wheel when the shaft .1 is rotated in the opposite direction.
  • the coupling pawl 4 engages with its arm 6 between teeth 8 of the wheel 10 when the drive shaft 1 rotates in a clockwise manner.
  • the arm 5 of the coupling pawl 4 is completely lifted out of engagement range of the teeth 7 of the wheel 9. This is so because the slanted or oblique flange 6a of the arm 6 will engage in the recess 8a between the teeth 8, so that the wheel 10 of the coupling will be rotated in the same direction and at the same speed as the shaft 1.
  • each combination driving wheel 9 and 10 includes respective eccentric portions 11 and 12 for operating a long hair trimmer portion generally designated 15 and a short hair cutter generally designated 16, respectively.
  • the eccentric portion 11 engages in a slot 17 of a coupling piece 18 which carries a movable cutting portion 15 of the long hair trimmer 15.
  • the slot 17 is of a size so that rotation of the eccentric 11 causes a reciprocating movement of the cou- 'pling piece 18 in the plane of FIG. 4.
  • the coupling piece 18 is guided in a straight line by means of cutouts 21 and 22 which accommodate guide pins 19 and 20, respectively, which are formed as upstanding extensions of an intermediate wall 26.
  • Securing discs 24 and 25 are secured over the guide pins 19 and 20 and prevent undesired lifting of the coupling piece 18 which glides on a bearing support 23 formed as a portion of the intermediate wall 26.
  • the drive In order to start operation of the respectively desired cutting portion, the drive has to be imparted with the desired rotational direction.
  • the drive preferably consists of a direct current motor which is pole-reversible. After the motor 27 has been switched on in the desired rotational direction, the coupling automatically connects the respective desired cutting portion of the shaver.
  • the desired cutting elements be it the long hair or the short hair cutter
  • the switching positions of the switch 28 are indicated by legends or markings (not shown) which indicate the respective cutter to be selected.
  • the switch 28 is preferably constructed in a manner to cause it to interrupt the motor circuit and thus shut the motor down completely when in between two operational positions as indicated in FIG. 4.
  • the drive motor 27 is secured to the intermediate wall 26.
  • the rotational direction of the shaft 1 can be selectively chosen. If this rotational direct is chosen in such a manner that the pawl 4 of the coupling takes along the wheel 9, then the eccentric portion 11 of the wheel causes the coupling piece 13 to reciprocate together with the cutting portion 15' which glides along adjacent stationary cone portion 15". In this manner the long hair cutter 15 of the shaver has been placed into operation.
  • the rotational direction of the motor shaft is changed by rocking the switch 28 in the opposite switching position, so that the rotational movement of the pawl is now transmitted to the driven wheel 10 of the coupling.
  • the eccentric portion 12 formed as a portion of the wheel 10 then engages into a longitudinal slot 30 in the coupling piece 31 to cause the back and forward movement thereof.
  • the coupling piece 31 is guided in a straight line manner between bearings 32 and 33 formed as inward extensions of the shaver casing at a hood-shaped casing wall 38 which closes the upper portion of the shaver.
  • Coupling piece 31 is also guided between guide pins 36 and 37 which engage into the longitudinal grooves 34 and 35 of the coupling piece 31.
  • the coupling piece 31 is connected with the knife head 41 which is longitudinally movable in the frame-like casing head 40.
  • the knife head 41 is formed in the known manner of the knife head frame 41 and knives 41 are inserted therein transversely to the move ment direction.
  • the coupling piece 31, with the knife head 41 is thus reciprocated in the direction of the arrows A by means of the eccentric portion 12, so that the knife 41" glides along the perforated foil or head plate 42 for the purpose of effective short hair shaving. If after the use of the short hair cutter 16 the drive of the shaver is to be stopped, the reversal switch 28 is rocked into a center position as indicated in FIG. 4, to disrupt the electrical connection to the motor 27.
  • the invention is not limited to the illustrated embodiments, but many modifications may be effected with regard to the construction of the coupling which is dependent on the rotational direction of the shaft. It is also within the scope of the invention to arrange such a coupling in dry shavers having a rotating cutter system.
  • the rotating cutter element for long or short hair, respectively may thus be associated, either directly or indirectly, with respective driven wheels of the coupling, and, if associated indirectly, then this may be accomplished through a suitable transmission means, for example by coaxial shafts.
  • the inventive coupling is capable of combining in a single shaver cutting elements of different systems, and the coupling may then selectively couple a desired one of these systems with the dry shaver.
  • a dry shaver comprising a casing, an electric driving motor mounted in said casing having a drive shaft, said motor being capable of rotating said drive shaft in both directions of rotation, a first member with openings for receiving hair for cutting a first cutter mounted for sliding movement in said casing adjacent said first member for cutting the hair presented through the openings thereof, a second member with openings for receiving hair for cutting, a second cutter mounted for sliding movement in said casing adjacent said second member for cutting the hair presented through the openings thereof, a coupling mounted in said casing and connected between said drive shaft and said first and second movable cutters, said coupling including first and second rotatable wheels connected respectively to said first and second movable cutters, and means carried by said shaft in engagement with said first wheel for moving the cutter upon rotation of said shaft in one direction, and engagea-ble with said second wheel for moving said second cutter upon rotation of said shaft in a second direction.
  • a power-driven shaver according to claim 1, wherein said first and second wheels are freely rotatable on said shaft and include internal gearing, said means carried by said shaft including a follower member and a pawl pivotally carried by said follower member engageable with the gearing of said first wheel upon rotation of the shaft in a first direction and engageable with the second wheel upon rotation of the shaft in an opposite direction.
  • each of said wheels includes :an eccentric portion, said first and second cutters having a portion which is slotted, said eccentrics being confined in respective ones of said slots and being of .a size to reciprocate the associated first and second cutter upon rotation of the eccentric portion.
  • a power-driven dry shaver including a casing, a motor mounted in said casing, switch means connected to said motor for rotating said motor in both directions and for stopping said motor, said motor having a shaft which is rotatable in selective directions in accordance with the orientation of said switch, a follower member atfixed to said shaft for rotation therewith, a pawl p-ivotally carried at the end of said follower member, a first coupling wheel having internal gearing adapted to be engaged by said pawl upon rotation of said pawl in a first direction, a second coupling wheel rotatable on said shaft and having internal gearing adapted to be engaged by said pawl upon rotation of said pawl in an opposite direction, each of said first and second wheels including eccentric portions, first member with openings for receiving hair for cutting, a first long hair cutter slidably mounted in said casing adjacent said first member for cutting the hair presented through the openings thereof, said first long hair cutter having a slotted portion engagea'ble over the eccentric portion of said first coupling
  • a dry shaver comprising a casing, an electric driving motor mounted in said casing having a drive shaft, said motor being capable of rotating said drive shaft in both directions of rotation, a first member with openings for receiving hair for cutting, a first cutter mounted for sliding movement in said casing adjacent said first member for cutting the hair presented through the opening thereof, a second member with openings for receiving hair for cutting, a second cutter mounted for sliding movement in said casing adjacent said second member for cutting the hair presented through the openings thereof, and coupling means connected between said drive shaft and said first and second movable cutters for causing movement of said first cutter when said drive shaft is rotated in one direction and for causing movement of said second cutter when said drive shaft is rotated in an opposite direction.
  • a dry shaver comprising .a casing, an electric driving motor mounted in said casing having a drive shaft, said motor being capable of rotating said drive shaft in both directions of rotation, a first member with openings for receiving hair for cutting, a first cutter mounted for sliding movement in said casing adjacent said first member for cutting the hair presented through the opening thereof, a second member with openings for receiving hair for cutting, a second cutter mounted for sliding movement in said casing adjacent said second member for cutting the hair presented through the openings thereof, and coupling means connected between said first and second movable cutters for causing movement of said first cutter when said drive shaft is rotated in one direction and for causing movement of said second cutter when said drive shaft is rotated in an opposite direction a switch mounted on said casing and connected to said motor, said switch being movable in one direction to energize said motor to rotate said drive shaft in one direction and being movable in an opposite direction to energize said motor to rotate said drive shaft in an opposite directi-on.
US299509A 1962-08-10 1963-08-02 Dry shaver having two independent shearing means with means to drive each shearing means separately Expired - Lifetime US3213536A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB68379A DE1174650B (de) 1962-08-10 1962-08-10 Trockenrasiergeraet mit umlaufendem Antrieb

Publications (1)

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US3213536A true US3213536A (en) 1965-10-26

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US299509A Expired - Lifetime US3213536A (en) 1962-08-10 1963-08-02 Dry shaver having two independent shearing means with means to drive each shearing means separately

Country Status (6)

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US (1) US3213536A (nl)
AT (1) AT240730B (nl)
CH (1) CH413653A (nl)
DE (1) DE1174650B (nl)
GB (1) GB985127A (nl)
NL (1) NL139478B (nl)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364569A (en) * 1965-05-28 1968-01-23 Sunbeam Corp Electric shaver with magnetic latch and clutch actuated clipper
US3412463A (en) * 1966-11-28 1968-11-26 Sunbeam Corp Dry shaver with clutch for long hair clipping attachment
WO2005007354A1 (en) * 2003-07-23 2005-01-27 Koninklijke Philips Electronics N.V. Shaving apparatus
US20060162166A1 (en) * 2003-02-21 2006-07-27 Koninklijke Philips Electronics N.V. Operating assembly and device including such an operating assembly
EP3738730A1 (en) * 2019-05-14 2020-11-18 Koninklijke Philips N.V. Shaving apparatus with drive for setting an operational parameter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150504B (en) * 1983-12-02 1987-06-24 Pa Consulting Services Improved drive unit
GB2150503B (en) * 1983-12-02 1987-05-28 Pa Consulting Services Franking machines

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US534374A (en) * 1895-02-19 Electrical apparatus for operating dental implements
US967006A (en) * 1909-03-25 1910-08-09 Robert C Feile Axle-clutch.
US1020417A (en) * 1911-03-18 1912-03-19 Guy M Hartley Differential gear.
US1170653A (en) * 1914-06-22 1916-02-08 Michelin & Cie Reversing clutch.
US1218613A (en) * 1915-08-12 1917-03-06 Bror A Adler Automobile driving mechanism.
US1290031A (en) * 1916-12-18 1919-01-07 Adler Mfg Company Differential drive mechanism.
US2300143A (en) * 1940-12-16 1942-10-27 Emil G Berg Cutter head for shaving devices
US2331466A (en) * 1938-06-21 1943-10-12 Remington Rand Inc Electric dry shaver
US2335469A (en) * 1942-02-02 1943-11-30 Stanton E Angell Twin wheel control
US2371242A (en) * 1945-03-13 Shaving machine
US2531819A (en) * 1948-06-03 1950-11-28 Baird Machine Co Reversible ratchet drive mechanism for power vehicles
US2541189A (en) * 1945-02-19 1951-02-13 Barsch Guillaume Dry shaver with abrader
US2574317A (en) * 1950-02-06 1951-11-06 Jet Electric Shaver Corp Electrical shaving device
CA520751A (en) * 1956-01-17 O. Nelson Donald Selecting clutch responsive to direction of rotation
US2778467A (en) * 1954-03-11 1957-01-22 Baird Machine Co Ratchet drive mechanism
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
DE91222C (nl) *
US1126234A (en) * 1913-05-12 1915-01-26 Differential Clutch Company Differential clutch.

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA520751A (en) * 1956-01-17 O. Nelson Donald Selecting clutch responsive to direction of rotation
US534374A (en) * 1895-02-19 Electrical apparatus for operating dental implements
US2371242A (en) * 1945-03-13 Shaving machine
US967006A (en) * 1909-03-25 1910-08-09 Robert C Feile Axle-clutch.
US1020417A (en) * 1911-03-18 1912-03-19 Guy M Hartley Differential gear.
US1170653A (en) * 1914-06-22 1916-02-08 Michelin & Cie Reversing clutch.
US1218613A (en) * 1915-08-12 1917-03-06 Bror A Adler Automobile driving mechanism.
US1290031A (en) * 1916-12-18 1919-01-07 Adler Mfg Company Differential drive mechanism.
US2331466A (en) * 1938-06-21 1943-10-12 Remington Rand Inc Electric dry shaver
US2300143A (en) * 1940-12-16 1942-10-27 Emil G Berg Cutter head for shaving devices
US2335469A (en) * 1942-02-02 1943-11-30 Stanton E Angell Twin wheel control
US2541189A (en) * 1945-02-19 1951-02-13 Barsch Guillaume Dry shaver with abrader
US2531819A (en) * 1948-06-03 1950-11-28 Baird Machine Co Reversible ratchet drive mechanism for power vehicles
US2574317A (en) * 1950-02-06 1951-11-06 Jet Electric Shaver Corp Electrical shaving device
US2778467A (en) * 1954-03-11 1957-01-22 Baird Machine Co Ratchet drive mechanism
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 (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364569A (en) * 1965-05-28 1968-01-23 Sunbeam Corp Electric shaver with magnetic latch and clutch actuated clipper
US3412463A (en) * 1966-11-28 1968-11-26 Sunbeam Corp Dry shaver with clutch for long hair clipping attachment
US20060162166A1 (en) * 2003-02-21 2006-07-27 Koninklijke Philips Electronics N.V. Operating assembly and device including such an operating assembly
WO2005007354A1 (en) * 2003-07-23 2005-01-27 Koninklijke Philips Electronics N.V. Shaving apparatus
JP2006528018A (ja) * 2003-07-23 2006-12-14 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ シェービング装置
US20080052910A1 (en) * 2003-07-23 2008-03-06 Koninklijke Philips Electronics N.V. Shaving Apparatus
CN100421888C (zh) * 2003-07-23 2008-10-01 皇家飞利浦电子股份有限公司 剃削装置
US9149942B2 (en) * 2003-07-23 2015-10-06 Koninklijke Philips N.V. Shaving apparatus
EP3738730A1 (en) * 2019-05-14 2020-11-18 Koninklijke Philips N.V. Shaving apparatus with drive for setting an operational parameter
WO2020229503A1 (en) * 2019-05-14 2020-11-19 Koninklijke Philips N.V. Shaving apparatus with drive for setting an operational parameter

Also Published As

Publication number Publication date
NL296371A (nl) 1900-01-01
CH413653A (de) 1966-05-15
DE1174650B (de) 1964-07-23
NL139478B (nl) 1973-08-15
AT240730B (de) 1965-06-10
GB985127A (en) 1965-03-03

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