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US2771672A - Dry shaver - Google Patents

Dry shaver Download PDF

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Publication number
US2771672A
US2771672A US299581A US29958152A US2771672A US 2771672 A US2771672 A US 2771672A US 299581 A US299581 A US 299581A US 29958152 A US29958152 A US 29958152A US 2771672 A US2771672 A US 2771672A
Authority
US
United States
Prior art keywords
cutter
cam
lever
contacts
dry shaver
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
US299581A
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English (en)
Inventor
Kobler Victor
Kobler 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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2771672A publication Critical patent/US2771672A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K25/00—DC interrupter motors or generators
    • 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

Definitions

  • This invention relates to dry shavers of the type having at least one shear head and an electrical driving unit.
  • Dry shavers operate according to the shearing principle, as is well known, and for this purpose they are provided with cutter members which are movable relatively to each other. These cutter members conventionally are so formed that a plurality of hairs may be simultaneously cut, for which purpose the cutter members are provided with a number of cutter gaps.
  • Conventional dry shavers usually have rotatable or reciprocating cutter elements. In both cases the hairs can enter the cutter gaps and be cut off only when the gaps are open. The more rapidly the relative movement of the cutter members is effected, the shorter is the opening time of the cutter gaps, thus reducing the possibility for a hair to enter a cutter gap. With rotating cutter members the closing and the opening of the cutter gaps is carried out at constant speed, while with reciprocating cutter members certain motionless periods occur, which facilitate the intrusion of the hairs into the cutter gaps.
  • the lifted hair stubbles ought to be able to enter freely and as deep as possible into the cutter gaps without encountering resistance, so that they may be cut as close as possible to their respective roots. But this may be attained only when the opening period of the cutter gaps is comparatively long, i. e. when the operating speed of the cutter member is low.
  • the dry shaver according to the present 2,771,672 Patented Nov. 27, 1956 invention, is provided with at least one shear head, with an electric driving unit, and with easily accessible means for changing the operating speed of the movable shear head parts.
  • Figs. 1 and 2 are the inner and outer views, respectively, of a dry shaver case
  • Fig. 3 shows a detail of Fig. 2, at enlarged scale
  • Fig. 4 shows at enlarged scale a detail of Fig. 2 in the one speed position of the electrical contacts.
  • the dry shaver illustrated in Figs. 1 and 2 has a twopiece casing 1 formed as a handle, which casing carries on its upper end a shear-head 14.
  • an electric motor of the interrupter type and of known construction is disposed in the interior of the handle 1 .
  • This small motor has a magnet core provided with pole shoes 25, which are arranged between two shields 26.
  • a three-pole armature 27 is journalled between the upper shield parts and mounted upon a shaft 28, the forward end of which is shaped as a triangular portion.
  • the two juxtaposed magnet coils 29 are disposed upon the said magnet core.
  • the inner ends of these coils are connected with springs 30 and 31, while the outer ends of the coils are connected in a not shown manner with a flexible cable 32.
  • a block 42 having a circular opening 43, is arranged between the two interrupter levers 34, 35 on the forward shield 26.
  • a lateral recess 44 provided in the block 42 is connected with this opening 43.
  • the latter serves as bearing journal for a flattened pin 45 constituting a cam.
  • This cam 45 is secured against axial displacement in a case part of the dry shaver and may be rotated by means of a lever 46 arranged on the outside of the case 1.
  • the cam 45 serves as an abutment for the adjusting screw 36 of the interrupter lever 34.
  • the upright position of the cam 45 corresponds to a certain inner end position of the interrupter lever 34; a second inner end position of the lever 34 is provided by the transversely positioned cam 45.
  • the interrupter contact lever 34 is then swung towards the inside until the adjusting screw 36 abuts against the cam 45.
  • the contacts 37 at the same time make contact with each other and the different parts take the position shown in Fig. 4.
  • the current circuit con sequently is closed.
  • the lever 34 presses the lever 35 somewhat towards the right hand side, so that separation ofthe contacts 37 is brought about only, when one of the cam points of the triangular shaft end 28 engages the abutment 35a of the lever 35.
  • the position of the cam 45 as shown in Fig. 4 thus corresponds to the normal, that is, relatively high operating speed of the shear head cutter and this position is adjusted for the pre-shaving operation.
  • the cam 45 is transversely positioned by means of the lever 46, that is, turned through 90 from the position shown in Fig.
  • the interrupter lever 34 upon the operation of the shaver (the turning of the cam 45, of course, could also be effected while the motor is running), can be swung less far to the right hand side, as this was the case with the upright positioned cam 45. Thereby the lever 35 is swung further towards the left hand side, i. e. it bears with its abutment 35a against a fiat side of the triangular portion of the shaft 23 even when the contacts 37 are closed. As may be easily realized, the interrupter lever 35 is swung out of its location earlier when the shaft 28 rotates, than this was the case in the position according to Fig. 4, whereby the contact periods of the contacts 37 also become shorter.
  • a shearhead having a movable cutter element, an electric motor for driving said element, means for drivingly connecting said motor with said movable element, a casing in which said motor and shearhead are mounted, said motor having a pair of relatively reciprocable contact carriers, an electrical contact on each of said carriers, screw means for adjusting said contacts relative to each otherfor setting the speed of operation of said motor, said screw adjustment means being mounted on one of said contact carriers, an abutment mounted in fixed relation to said casing and adjustable relative to said screw means for effecting further adjustment of said contacts for controlling the speed of operation of said motor within a certain range of speed, means for adjusting said abutment, said screw means being engageable upon said abutment.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
US299581A 1951-07-21 1952-07-18 Dry shaver Expired - Lifetime US2771672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH719840X 1951-07-21

Publications (1)

Publication Number Publication Date
US2771672A true US2771672A (en) 1956-11-27

Family

ID=4531454

Family Applications (2)

Application Number Title Priority Date Filing Date
US24772D Expired USRE24772E (en) 1951-07-21 Adjustable speed driving mechanism for dry shavers
US299581A Expired - Lifetime US2771672A (en) 1951-07-21 1952-07-18 Dry shaver

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US24772D Expired USRE24772E (en) 1951-07-21 Adjustable speed driving mechanism for dry shavers

Country Status (5)

Country Link
US (2) US2771672A (de)
CH (1) CH308339A (de)
DE (1) DE1033547B (de)
FR (1) FR1063303A (de)
GB (1) GB719840A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103743A (en) * 1960-11-18 1963-09-17 Kobler Victor Shape and proportions of shearheads
US20060200991A1 (en) * 2005-03-14 2006-09-14 C.C. & L Company Limited Hair trimmer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL100415C (de) 1955-04-20
CN108356857B (zh) * 2017-01-26 2020-03-03 松下知识产权经营株式会社 电动剃毛装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1828895A (en) * 1930-06-18 1931-10-27 Schick Dry Shaver Inc Electric motor
US1922824A (en) * 1930-08-19 1933-08-15 Schick Dry Shaver Inc Electric motor
US2164425A (en) * 1937-07-09 1939-07-04 Remington Rand Inc Multiple head dry shaver
US2231466A (en) * 1937-07-27 1941-02-11 Gillette Safety Razor Co Electric motor and shaver
US2238383A (en) * 1938-10-17 1941-04-15 Knapp Monarch Co Motor speed adjusting device
US2286629A (en) * 1938-07-23 1942-06-16 Kobler Victor Motor
US2509868A (en) * 1948-10-29 1950-05-30 Remington Rand Inc Dry shaver motor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE670740C (de) * 1935-03-19 1939-01-24 Schick Dry Shaver Inc Corp Regelvorrichtung fuer Kleinelektromotoren fuer Rasierapparate
CH208696A (de) * 1938-12-28 1940-02-15 Kobler & Co Elektrischer Trockenrasierapparat.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1828895A (en) * 1930-06-18 1931-10-27 Schick Dry Shaver Inc Electric motor
US1922824A (en) * 1930-08-19 1933-08-15 Schick Dry Shaver Inc Electric motor
US2164425A (en) * 1937-07-09 1939-07-04 Remington Rand Inc Multiple head dry shaver
US2231466A (en) * 1937-07-27 1941-02-11 Gillette Safety Razor Co Electric motor and shaver
US2286629A (en) * 1938-07-23 1942-06-16 Kobler Victor Motor
US2238383A (en) * 1938-10-17 1941-04-15 Knapp Monarch Co Motor speed adjusting device
US2509868A (en) * 1948-10-29 1950-05-30 Remington Rand Inc Dry shaver motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103743A (en) * 1960-11-18 1963-09-17 Kobler Victor Shape and proportions of shearheads
US20060200991A1 (en) * 2005-03-14 2006-09-14 C.C. & L Company Limited Hair trimmer

Also Published As

Publication number Publication date
GB719840A (en) 1954-12-08
USRE24772E (en) 1960-02-02
DE1033547B (de) 1958-07-03
FR1063303A (fr) 1954-05-03
CH308339A (de) 1955-07-15

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