US3324545A - Reciprocating or vibratory electric razor - Google Patents

Reciprocating or vibratory electric razor Download PDF

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Publication number
US3324545A
US3324545A US537139A US53713966A US3324545A US 3324545 A US3324545 A US 3324545A US 537139 A US537139 A US 537139A US 53713966 A US53713966 A US 53713966A US 3324545 A US3324545 A US 3324545A
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US
United States
Prior art keywords
razor
electromagnet
casing
armature bar
reciprocating
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Expired - Lifetime
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US537139A
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English (en)
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Sali Evelino
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/08—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/38—Safety razors with one or more blades arranged transversely to the handle with provision for reciprocating the blade by means other than rollers

Definitions

  • the present invention relates to an electric shaver with reciprocating and vibrating head provided with a removable razor-blade.
  • the electric shaver includes a head assembly, a razor-blade supported by said head assembly and having at least one cutting edge extending along at least one shaving side of said head assembly and a hand grip member, and is characterized in that it comprises a connecting assembly transmissively connecting said head assembly with said grip member and electro-magnetic means for imparting a reciprocating and vibrating motion to said razor blade within a plane parallel to the cutting edge of said razor blade.
  • FIG. 1 is a partially sectional view of the electric shaver according to the invention
  • FIGS. 2, 3 and 4 are side views of component members of the support frame
  • FIG. 5 is a plan view of a connecting member
  • FIGS. 6, 7, 8 and 9 are electric diagrams of a modified form of the invention
  • FIG. 10 shows a current plug.
  • electromagnet 1 has a magnetic iron core 2 arranged with its longitudinal axis concentrically to the diamagnetic support element 3 having a central cavity 4 within which a pole of the electromagnet is seated at the bottom surface thereof. Opposite to this pole, there is a second core element or armature bar 5 defining a suitable magnetic gap 4a and having the same magnetic permeability features as the main core 2.
  • Core 5 is housed within the diamagnetic cap 6, which in turn is inserted on the support element 3.
  • the head of core 5 is embedded into a resilient liquid-proof seal and block members 7 and held in its seating by the radial springing washer 8, inserted in the circular groove 9.
  • Armature bar 5 has normally its lower end slightly eccentric or offset to the core 2 and the resilient block member 7 acts as a resilient fulcrum for the armature bar 5.
  • the upper portion or tip 5a of the armature bar 5, emerging from the resilient block member 7, is engaged by suitable tolerance or play in the central hole or recess 10 of the blade holder 11 which is rigid with the razor head, as will be explained later.
  • the holder is provided with downwardly projecting guides 12 designed to slidably engage a plate 13 provided at the top of cap 6 and integral therewith.
  • a rigid or flexible razor-blade 14 is provided, having a single or double cut- Patented June 13, 1967 ting edge and is clamped between the upper surface of the holder 11 itself and the lower face of a blade cover element 15.
  • the latter may be secured to the holder 11 through the knurled knob 16 which has an internal thread bore 17, screwable onto the cylindrical thread portion 18 of said blade cover element.
  • a case 19 of plastics material is water tight screwable onto the support element 3 and forms a knurled handle for the razor. Case 19 protects also the winding of electromagnet l.
  • FIG. 3 an additional resilient yieldable gasket 7a is shown, to improve the assembling of the component parts.
  • FIGURES 69 show electric diagrams for the electromagnetic circuit, which is of the voltage changeover switch type since the winding of the electromagnet 1 is suitably dimensioned to handle all the voltages being distributed for domestic use at the frequency of 50 c.p.s.
  • a voltage changeover 22a switch is preferably incorporated in the two-pole plug 22 instead in the case 19.
  • the circuit shown in FIG. 9 as well as the ring circuit shown in FIG. 8 are two modifications of the circuit shown in FIG. 1; such modifications involve, however, a larger amount of ferromagnetic material.
  • the magnetic circuit consists of materials conventionally used in the manufacturing of electric machines, that is: forge iron, silicon iron sheets, or orientated grain iron sheets, or particularly also a homogeneous or substantially homogeneous ferromagnetic single or composite ferrite.
  • a ferrite can be represented by the formula MFe O which can also be conceived as MOFe O wherein M is a bivalent metal or a combination of two bivalent metals.
  • composition need not to exactly satisfy the expression M OFe O
  • the quantities of MO and Fe O may vary within such ranges that separaion of a second crystalline phase, owing to which the magnetic properties are adversely affected, is avoided.
  • the method of the open magnetic circuit with flux loss has considerable advantages from a constructive point of view owing to its simplicity and, above all, as to its functional characteristics.
  • the magnetic circuit being of the flux loss type, allows to obtain elastic or yieldable oscillations having a constant frequency and an amplitude which is damped or modified depending on the mechanical resistance encountered by the movable cutting unit on shearing the beard hairs.
  • every single hair to be cut comprises three concentric organic layers. Furthermore, on an average there are on every sq. mm. from 6 to 10 hairs.
  • a cylindrical solid fixedly engaged at one end is subjected to simple shearing stress when any transverse cross-section is urged by a force lying in the plane thereof and passing through the centre of gravity.
  • a shearing stress will occur if a very sharp razor blade is caused to advance in the plane of the hair engagement or cutting section.
  • the molecular reaction of the hair in opposition to the sliding of a. section relatively to another adjoining section, will lead to the shearing stress or inner tangential tension which, by using a razor according to the present invention, has reduced values.
  • the shearing action performed on the hair by the apparatus according to this invention is accomplished by simultaneously imparting to the razor blade two component motions, of which the first, being a linear vibratory motion, operates as an alternative toothless saw at the engagement plane of the hair with an average speed of about mm. per second.
  • the second is the manual advancing motion being imparted by the operator.
  • Even a third motion should be considered which consists of secondary vibratory motions of the blade.
  • Such secondary vibrations are generated by the first motion due to the existing elasticity and clearances or play in the assembled component elements of the shaver. It occurs in the same plane as the said first motion but according to directions trasverse and even perpendicular to each other.
  • the resulting motion is approximately a helicoidal zig-zag motion.
  • the shaver according to the invention operates as follows: on applying an appropriate voltage at 50 c.p.s. at the terminals of winding of the electromagnet 1 indicated in FIGURE 1 and through flexible cord 21 and plug 22, said voltage will cause an alternate current to be circulated into said winding, which current will generate a magnetic flux also of the sine wave shape that will run through cores 2 and with the same induction.
  • the movable armature bar 5 is suitably eccentric with respect to core 2 by means of the resilient block member 7 and this elastic antagonism if desired, with the eo-operation of a spring causes said armature bar 5 to vibrate in synchronism with the magnetic flux frequency.
  • This vibratory motion is transmitted by the tip 5a of armature bar 5 to the reciprocating and vibratory razor head composed of holder 11, razor blade 14, cover blade element and knurled screw 16.
  • a reciprocating and vibratory electric razor having a casing, an electromagnet contained in said casing and a vibrating razor head, the combination comprising a hollow cap member coaxial with said casing and having one end thereof fixed on said casing, and the other end thereof having an opening and guide means for supporting and guiding the vibrating razor head, an elongated armature bar within said hollow cap member, responsive to the alternating magnetic field generated by said electromagnet, a resilient block member fixed within said hollow cap member near said other end thereof and adapted to provide a water proof closure of said opening thereof, said resilient block member having embedded therein an end portion of said armature bar remote from said electromagnet, said end portion of the armature bar having a tip projecting through said resilient block member and through said opening of said hollow cap member beyond said other end thereof, a recess in said razor head engagingly receiving said tip, said armature bar being arranged offset to the axis of said electromagnet in the rest position thereof, said resilient block member being adapted to urge said armature bar

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
US537139A 1965-04-03 1966-03-24 Reciprocating or vibratory electric razor Expired - Lifetime US3324545A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT746765 1965-04-03

Publications (1)

Publication Number Publication Date
US3324545A true US3324545A (en) 1967-06-13

Family

ID=11125093

Family Applications (1)

Application Number Title Priority Date Filing Date
US537139A Expired - Lifetime US3324545A (en) 1965-04-03 1966-03-24 Reciprocating or vibratory electric razor

Country Status (8)

Country Link
US (1) US3324545A (en, 2012)
AT (1) AT266649B (en, 2012)
BE (1) BE678743A (en, 2012)
CH (1) CH466083A (en, 2012)
DE (1) DE1966586U (en, 2012)
ES (1) ES325445A1 (en, 2012)
GB (1) GB1106724A (en, 2012)
NL (1) NL6604319A (en, 2012)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819330A (en) * 1987-10-05 1989-04-11 Fenn Lawrence E Live-action blade shaver
US4914816A (en) * 1987-10-05 1990-04-10 Fenn Lawrence E Live-action blade shaver
US5007169A (en) * 1989-12-11 1991-04-16 Warner-Lambert Company Vibrating razor
USD455229S1 (en) 2000-12-29 2002-04-02 Remington Corporation, L.L.C. Ear and nose trimmer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021005997A1 (de) 2021-12-04 2023-06-07 Jan Grinbaum Nassrasierer

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1158741A (en) * 1915-02-04 1915-11-02 Marco Byron Stearns Safety-razor.
US1663809A (en) * 1925-04-03 1928-03-27 Sampson W Moon Electric safety razor
US1813630A (en) * 1929-07-23 1931-07-07 Warner Clark Electromagnetic oscillator
US1832961A (en) * 1930-12-04 1931-11-24 James F Barry Electrically operated safety razor
US2015160A (en) * 1932-11-22 1935-09-24 Tark Electric Razor Co Inc Electric razor and blade therefor
CH191063A (de) * 1937-04-17 1937-05-31 Brunner Walter Elektrische Trockenrasiermaschine.
US2232271A (en) * 1938-04-20 1941-02-18 Frank M Ashley Safety razor
US2301552A (en) * 1939-05-29 1942-11-10 Cell George E La Oscillating safety razor
FR1016485A (fr) * 1950-04-19 1952-11-13 Rasoir automatique pour raser à sec ou en humidifiant la peau
FR1185200A (fr) * 1957-10-25 1959-07-30 Rasoir de sûreté perfectionné

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1158741A (en) * 1915-02-04 1915-11-02 Marco Byron Stearns Safety-razor.
US1663809A (en) * 1925-04-03 1928-03-27 Sampson W Moon Electric safety razor
US1813630A (en) * 1929-07-23 1931-07-07 Warner Clark Electromagnetic oscillator
US1832961A (en) * 1930-12-04 1931-11-24 James F Barry Electrically operated safety razor
US2015160A (en) * 1932-11-22 1935-09-24 Tark Electric Razor Co Inc Electric razor and blade therefor
CH191063A (de) * 1937-04-17 1937-05-31 Brunner Walter Elektrische Trockenrasiermaschine.
US2232271A (en) * 1938-04-20 1941-02-18 Frank M Ashley Safety razor
US2301552A (en) * 1939-05-29 1942-11-10 Cell George E La Oscillating safety razor
FR1016485A (fr) * 1950-04-19 1952-11-13 Rasoir automatique pour raser à sec ou en humidifiant la peau
FR1185200A (fr) * 1957-10-25 1959-07-30 Rasoir de sûreté perfectionné

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819330A (en) * 1987-10-05 1989-04-11 Fenn Lawrence E Live-action blade shaver
US4914816A (en) * 1987-10-05 1990-04-10 Fenn Lawrence E Live-action blade shaver
US5007169A (en) * 1989-12-11 1991-04-16 Warner-Lambert Company Vibrating razor
USD455229S1 (en) 2000-12-29 2002-04-02 Remington Corporation, L.L.C. Ear and nose trimmer

Also Published As

Publication number Publication date
BE678743A (en, 2012) 1966-09-01
CH466083A (de) 1968-11-30
GB1106724A (en) 1968-03-20
AT266649B (de) 1968-11-25
ES325445A1 (es) 1967-02-16
DE1966586U (de) 1967-08-17
NL6604319A (en, 2012) 1966-10-04

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