US3699652A - Rotary hair clipper - Google Patents

Rotary hair clipper Download PDF

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Publication number
US3699652A
US3699652A US197093A US3699652DA US3699652A US 3699652 A US3699652 A US 3699652A US 197093 A US197093 A US 197093A US 3699652D A US3699652D A US 3699652DA US 3699652 A US3699652 A US 3699652A
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Prior art keywords
shearing
hub
blades
collet
spring
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Expired - Lifetime
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US197093A
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English (en)
Inventor
Kenneth D Deverman
Charles R Struck
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    • 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
    • B26B19/14—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor
    • B26B19/148—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor specially adapted for removing hair from inaccessible places, e.g. nostrils

Definitions

  • ABSTRACT A rotary motor driven hair clipper for removing unwanted hair from the nostrils or ears and embodying a tubular shearing head within which a plurality of cooperating orbiting shearing blades function in closefitting relationship under the influence of centrifugal force.
  • a radial type fan which rotates with the shearing blades creates a suction which draws the sheared hair residue through the tubular shearing head and deposits the same on the inner surface of a removable filter ring.
  • the present invention relates to 'tonsorial implements and has particular reference to a novel rotary hair clipper by means of which unwanted hair may conveniently be removed from the nostrils or ears without cooperation with fixed shearing edges which are proappreciably distending either of these body orifices.
  • the invention is concerned with a rotary hairclipper of the general type which employs a tubular shearing head or collet withinwhich a cooperating shearing blade assembly rotates, the diameter of the shearing head being somewhat less than the mean diameter of the body orifice into which the shearing head is inserted for hair clipping or shearing purposes.
  • Cooperating shearing edges on the shearing head and blades effect the desired shearing action during rotation of the shearing blade assembly, such action sometimes being loosely referred to as a unidirectional rotary sickle action as distinguished from the oscillatory straight line sickle action which is present in connection with powered sickle mowers, hedge trimmers and the like.
  • rotary hair clippers of the type set forth above are possessed of numerous limitations, principal among which is the inability of the cooperating shearing edges to remain sharp.
  • the rotary blade assembly is a rigid structure which, when the implement is new, serves its purpose in a satisfactory manner but which subsequently becomes worn so that the scissors action of the cooperating blade edges is impaired. Any slight axial misalignment of such a shearing blade assembly is likely to cause blade wobble and concentrate the shearing action on one side of the assembly at the expense of proper shearing action on the other side thereof.
  • a rigid coupling between the rotary blade assembly and the motor shaft may lead to binding of the assembly within the shearing head or collet due to clogging of the interfacial space between the tubular head and the internal rigid blade assembly.
  • Another limitation that is attendant upon the constructionanduse of certain present day rotary hair clippers resides in the fact that they rely for their shearing action upon an inward projection of the individual hairs through side openings'or slots in the wall of the tubular shearing head. By such an arrangement unduly long hairs are not always encountered by the shearing edges since they tend to lie flat against the wall of the body orifice and only the shorter upstanding hairs are presented to the shearing edges for clipping purposes.
  • Such few rotary hair clippers as are equipped with suction fan and filter arrangements for drawing the hair clippings through the tubular shearing head employ helical type fan blades which function on the downstream side of a disk-type filter screen.
  • Such helical fan blades lack positive air-impelling action and are subject to the establishment of air churning under load.
  • the present invention is designed to overcome the above-noted limitations that are attendant upon conventional rotary hair clippers designed for the same vided on the surrounding tubular shearing head.
  • the blades themselves are connected in driven relationship to the motor shaft by a flexible coupling which serves automatically to center the blade assembly as a unit axially within the tubular shearing head so that there will be no blade wobble and so that the shearing action will take place uniformly throughout the entire 360 extent of the shearing head. Furthermore, an'arrangement of this nature produces a continuous self-sharpening of the shearing edges, both on the blade assembly and shearing head.
  • the present invention further contemplates the provision of a tubular shearing head in which the shearing edges associated therewith are established by the provision of V-shaped end notches which are provided in the forward rim of the tubular shearing head, the side and bottom edges of such notches establishing sharp shearing edges, and in which the elongated floating flexible cutter blades are provided with sharp shearing edges at their forward distal ends which sweep around the rim region of the tubular shearing head and thus cooperate with such notches for shearing purposes.
  • a sickle action takes place as the tips of the blades orbit about the central axis of the shearing head so that longitudinal in and out projection of the shearing head, coupled with a slight degree of turning of the head within the nasal cavity will cause the longer hairs which ordinarily lie flat against the skin to enter the V-shaped notches and become clipped by a shearing action similar to that which is involved in connection with the so-called trimming head which are provided on some dry shaver implements.
  • the rotary blade assembly includes a series of radial fan blades which operate within a cylindrical hair'collection chamber and which is encompassed by a removable cylindrical filter screen, the chamber being in register with the tubular shearing head so that the air-ladenair is drawn centrally into the chamber and then flung radially outwardly against the surrounding filter screen. Since the fan is thus on the upstream side of the filter screen and the fan blades are of the radial centrifugal type, as compared to helical fan blades, a more efficient suction is attained.
  • a rotary hair clipper which is extremely simple in its construction and which therefore may be manufactured at a relatively low cost; one which is comprised of a minimum number of moving parts and which therefore is unlikely to get out of order; which is rugged and durable and which therefore will withstand rough usage; one which is capable of ease of assembly and disassembly for purposes of inspection or replacement of parts; one which is compact and of lightweight construction; one in which the filter screen is readily removable for cleaning purposes without necessitating the use of tools; one which is smooth and silent in its operation; one which is unlikely to clog or foul; one which is attractive in its appearance and pleasing in its design, and one which otherwise is well adaptedto perform the services required of it, are further desirable features which have been borne in mind in the production and development of the present invention.
  • FIG. 1 is a side elevational view of a rotary hair clipper embodying the principles of the present invention
  • FIG. 2 is a front end view of the hair clipper of FIG.
  • FIG. 3 is an enlarged longitudinal sectional view taken substantially on the line 33 of FIG. 1;
  • FIG. 4 is an enlarged sectional view taken substantially on the line 44 of FIG. 2;
  • FIG. 5 is a sectional view taken on line 5-5 of FIG. 3;
  • FIG. 6 is a fragmentary longitudinal sectional view similar to FIG. 4, showing a modified form of the invention
  • FIG. 7 is a side elevational view of the blade assembly of FIG. 6 but showing the blade assembly in its detached or free state;
  • FIG. 8 is a front end view of the structure shown in FIG. 7;
  • FIG. 9 is a rear end view of the structure shown in FIG. 7;
  • FIG. 10 is a sectional view similar to FIG. 6, showing a further modified form of the invention.
  • the improved hair clipper of the present invention in one form thereof, involvesin its general organization atwo-part separable casing 10 which embodies a rear cup-shaped base section 12 adapted to contain a power source such as a dry cell battery B (FIG. 1) and which for this purpose establishes a battery compartment 14.
  • the casing 10 also includes a frusto-conical forward motor section 16 which establishes a motor compartment 17 (FIG. 4) within which there is disposed an electric motor M by means of which a cutter assembly 18, the details of which will be described presently, is powered.
  • a shearing head 20 is provided with a cap portion 22 which is telescopically received over the forward end of the motor section 16 and is removably held in place by a pair of diametrically disposed spring latch fingers 24 (FIGS. 2 and 4) which are anchored by screws 26 to the cap portion 22 and which have in-turned ends 28 which are received in slots 30 provided in the wall of the motor section 16.
  • an integral tubular collet 32 of frusto-conical configuration Projecting forwardly from the central region of the cap section 22 of the shearing head 20 is an integral tubular collet 32 of frusto-conical configuration and having an appreciable slant height and a small slant angle.
  • a cylindrical bore 33 extends axially through the collet 32.
  • the wall of the collet 32 is tapered forwardly and the forward rim of the same is provided with a series of circumferentially spaced notches 34, the side and bottom edges of which provide a plurality of sharp shearing edges 36 which cooperate with the rotary cutter blade assembly 18 in a manner that will be made clear subsequently.
  • the extreme forward rim region of the collet 32 thus presents a castle-like appearance.
  • the forward end of the motor section 16 is closed by a front wall 40 within which there is centrally secured a bushing 42 through which the drive shaft 44 of the motor M projects.
  • the tubular collet 32 is integrally formed with the cap section 22 and the base portion of the collet is connected to the skirt portion 45 of the cap section 22 by an annular crown portion or wall 46.
  • the skirt 45 of the cap section 22 is provided with a downwardly facing annular shoulder 48 which seats on the forward circular rim of the motor section 16 when the two latch fingers 24 are in their home positions.
  • the crown portion or wall 46 is thus maintained spaced forwardly from the wall 40, these two walls, in combination with the skirt portion 45, establishing a collection chamber 50 for clipped hair residue.
  • the cutter assembly 18 is comprised of three component parts, namely a spring steel cutter element 52, an elastomeric or other sleeve 54 and a helical coupling spring 56.
  • the sleeve 54 is telescopically received over the motor drive shaft 44 in tight fitting relationship and the coupling spring is similarly telescopically received over the sleeve, thus further compressing the sleeve on the shaft 44.
  • the tightly wound spring 56 will support the cutter element 52 in axial alignment with the motor shaft 44 and there will be no tendency for the element to lean in any direction.
  • the cutter element 52 is comprised of a single length of thin fiat spring steel ribbon stock bent to U-shape configuration so as to establish two generally parallel or slightly divergent flat shearing blades proper 60 and an interconnecting bight portion 62 (FIGS. 2 and 3).
  • the bight portion of the cutter element extends into the confines of the helical spring 56 and may be secured therein by means of silver solder or the like, the flow of solder into the spring serving, in effect, to establish a generally tubular sheathe of the solder material around the bight portion 62.
  • the lower regions of the spring may similarly have silver solder applied thereto but it is essential that the helix convolutions which exist between the cutter element 52 and the bushing 54 shall be free convolutions which are capable of flexing as previously described.
  • the sleeve 54 constitutes a mounting hub for the cutter assembly 18, while the helical spring 56 constitutes a flexible coupling between the cutter element 52 and the hub.
  • the cutter element 52 when fully received on the motor drive shaft 44, is so disposed that the outer end regions of the shearing blades proper 60 are in radial shearing register with the shearing edges 36 of the notches 34 in the collet 32. Normally, the tips of the shearing blades 60 lie in close proximity to the wall of the collet 32 or, depending on manufacturing tolerances, are in actual contact with such wall.
  • the blades 60 which are centrifugally balanced by reason of their opposed disposition, are flung apart by centrifugal force so that not only do the extreme tips of the blades ride in circumferential fashion around the inner wall surface of the collet 32, but a short section of each tip may flex so that it is in coextensive contact with the wall of the collet and the shearing edges 36 encounter and cooperate with the leading edge of each blade throughout the entire vertical extent of such shearing edges.
  • the shearing head 120 remains substantially the same as the shearing head 20 except for the fact that the axial bore 133 in the tubular collet part 132 is provided with a slightly reduced internal diameter at its forward end as indicated at 135 in the vicinity of the radially outwardly a series of fan blades 68. While four such blades are illustrated herein, it is obvious that a greater or a lesser number of such blades may be employed if desired.
  • Encompassing the fan assembly, 64 and removably lining the skirt portion 45 of the shearing head 20 is a paper or other filter ring 70 which normally covers a series of air discharge holes 72 which are formed in the skirt portion 45.
  • the residue build-up on the filter ring 70 may be removed by lifting the spring latch fingers 24 from the slots 30, removing the shearing head 20 by slipping the same endwise from the shearing blades 60, pulling the filter ring from its seated position within the cap portion 22 of the shearing head 20, washing or otherwise cleaning such fllter ring, and reassembling the hair clipper instrument.
  • FIG. 1 a conventional electrical control switch 80 is shown as being mounted on the motor section 16 of the casing 10, the function of the switch being to cause energiz'ation and deenergization of the motor M for cutting blade driving purposes.
  • shearing head is provided with an annular crown portion 146 from which there depends a skirt portion having air discharge holes 172 therein which cooperatewith a filter ring 170 in the manner previously set forth in connection with the filter ring 70 and holes 72.
  • the cutter blade assembly 1 18 embodies a cutter element 152 in which the lower regions 162 of the integral blades proper are brought into close proximity and parallelism and are separated by a spacer member 163, while the forward regions are divergent as indicated at 165 so that the cutter element 152 takes on a Y appearance.
  • the extreme outer end portions 167 of the divergent portions 165 are preferably but not necessarily turned inwardly at a small angle so that they are less divergent than the regions 165.
  • the spring 156 instead of being completely solid, is provided with a stretched or non-solid section 157 while the forward region of the spring exists in a tightly woundsolid state'and encompasses the lower portion of the slightly spaced parallel portions 162 of the cutter element 132 and also of the spacer member 163.
  • This solid region of the spring and its adjacent portions of the cutter element and spacer member may be silver soldered or otherwise bonded together.
  • the rear region of the spring 156 is similarly tightly wound and solid and it encompasses a mounting nipple or hub 166 which is formed of metal and replaces the bushing 66 in the previously described form of the invention.
  • the nipple 166 is provided with a socket 169 therein by means of which the entire cutter assembly 118 may be press fitted onto the forward end of the motor shaft 44. Silver solder may likewise be applied to this lower solid section of the spring 156.
  • the fan assembly 64 may be telescopically received over the mounting nipple 166.
  • FIGS. 6 to 9 inclusive The operation of the form of the invention shown in FIGS. 6 to 9 inclusive is similar to that previously described in connection with the disclosure of FIGS. 1 to 5 inclusive.
  • the reduced outer or forward end portion 135 of the collet part 132 coupled with the fact that the distance between the outer end portions 167 of the cutter blades 160 in the free state of the cutter element 152 is greater than the internal diameter of the collet part 132 causes these end portions 167 to yieldingly bear against the collet wall under spring pressure.
  • This spring pressure is augmented by the action of centrifugal force at such time as the clipper is set into operation.
  • the disposition of the outer end portions 165 of the cutter blades 160 insures proper seating of the blades against the wall of the collet part 132 and efficient shearing action between the shearing edges of the blades and collet part.
  • the intermediate stretched portion 157 of the spring 156 affords greater flexibility and assists in a self-centering action of the entire cutter assembly 118 as a whole.
  • FIG. 10 a further modified form of shearing head 220, cutter blade assembly 218 and fan are disclosed, these assemblies being capable of substitution for the shearing head 20 and assemblies 18 and 64 on the forward end of the motor section 16.
  • similar reference numerals but of a still higher order have been, wherever practicable, applied-to the corresponding parts as between the disclosures of FIGS. 4 and 10.
  • the shearing head 220 is provided with a separately formed collet part 232, the two parts being press fitted together as indicated at 237.
  • a cylindrical bore 233 extends axially through the collet part 232 and is of slightly reduced diameter as shown at 235 near the notches 234 which are formed in the collet part.
  • the shearing head 220 is recessed at 221 to accommodate the reception of a portion of the cutter blade assembly 218 as will be described presently.
  • the skirt portion 245 and crown portion 246 of the head 220 remain substantially the same as the skirt portion 45 and crown portion 46 of the shearing head 20.
  • the fastening screws 226 and latch fingers 244 remain substantially the same asthe screws 26 and fingers 44.
  • a filter ring 270 encompasses the fan assembly 264 and functions in the manner of the filter ring 70 to remove hair residue from the discharge air streams which issue from the discharge holes 272 in the skirt portion 245.
  • the cutter blade assembly 218 includes a cutter element 252 having diverging cutter blades 260 and the base region of the assembly is embedded in a molded plastic member 256 of cylindrical configuration and on the lower end of which a plurality of radial fan blades 268 are formed.
  • the member 256 is press fitted on the forward end of the motor shaft 44.
  • rotary hair clipper for removing unwanted hair from a nasal cavity
  • said clipper comprising in combination a casing, a fixed tubular collet projecting forwardly from said casing and designed for endwise insertion into said cavity, said collet presenting a forward open rim having a series of circumferentially spaced generally V-shaped notches formed therein, the side edges of said notches constituting fixed shearing edges, a motor disposed within said casing and having'a drive shaft coaxial with said collet, a cutter assembly mounted on said drive shaft for rotation bodily therewith, said cutter assembly including a mounting hub'on the drive shaft and a pair of elongated flexible diametrically opposed centrifugally balanced shearing blades projecting forwardly from the hub within the confines of the collet, and a yieldable flexible coupling extending between the cutter blades and hub, said flexible coupling being in the form of a helical spring having its forward region anchored to the rear regions of the cutter blades, and having its rear'region

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
US197093A 1971-11-09 1971-11-09 Rotary hair clipper Expired - Lifetime US3699652A (en)

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US19709371A 1971-11-09 1971-11-09

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JP (1) JPS556361B2 (enExample)
CA (1) CA935633A (enExample)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3925888A (en) * 1974-09-30 1975-12-16 William G Bozsanyi Hair clipper for the nose and ears
US4051596A (en) * 1975-09-10 1977-10-04 U.S. Philips Corporation Wire cutter, particularly for cutting electrical connection wires
US4162574A (en) * 1978-02-27 1979-07-31 Johnston Mack S Hair clipper
USD437453S1 (en) 1999-07-09 2001-02-06 The Sharper Image Personal groomer system
US20020162226A1 (en) * 2000-10-30 2002-11-07 Conair Cip, Inc. Hair clipper with pivoting clipper head assembly
US20030229989A1 (en) * 2002-06-18 2003-12-18 Salman Yusufov Cuticle cutting instrument
US6836965B1 (en) * 2003-03-14 2005-01-04 Alrita Ross Rotational hair cutting device
US20060162516A1 (en) * 2002-10-31 2006-07-27 Andis Company Hair trimmer
US20060174487A1 (en) * 2002-10-31 2006-08-10 Andis Company Hair trimmer
USD536135S1 (en) * 2005-04-19 2007-01-30 Matsushita Electric Works, Ltd. Nose hair trimmer
US20070028447A1 (en) * 2005-08-05 2007-02-08 Matsushita Electric Works, Ltd. Nose hair cutter
US20090223058A1 (en) * 2008-03-05 2009-09-10 Brian Michael Coleman Vacuum Device for Hair Clippings
US20110185578A1 (en) * 2009-03-01 2011-08-04 Surgical Site Solutions, Inc. System and method for hair clipping and removal
US10279493B2 (en) 2017-03-30 2019-05-07 Wahl Clipper Corporation Vacuum systems for hair clippers
US20190329431A1 (en) * 2018-04-30 2019-10-31 Lister Shearing Equipment Limited Hair clipper having dual fan motor
WO2021146470A1 (en) * 2020-01-14 2021-07-22 Manscaped, Llc Vibration dampening connector for a nose hair trimmer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53148893U (enExample) * 1977-04-28 1978-11-22
JPS5635307U (enExample) * 1979-08-27 1981-04-06

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2191073A (en) * 1938-01-15 1940-02-20 Herman Cohen Rotatively oscillatable hair clipper
US2376197A (en) * 1939-08-26 1945-05-15 Schlotthauer Herman Shaver
US2801465A (en) * 1956-09-07 1957-08-06 William W Cason Hair clippers for the ears and nose

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2191073A (en) * 1938-01-15 1940-02-20 Herman Cohen Rotatively oscillatable hair clipper
US2376197A (en) * 1939-08-26 1945-05-15 Schlotthauer Herman Shaver
US2801465A (en) * 1956-09-07 1957-08-06 William W Cason Hair clippers for the ears and nose

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3925888A (en) * 1974-09-30 1975-12-16 William G Bozsanyi Hair clipper for the nose and ears
US4051596A (en) * 1975-09-10 1977-10-04 U.S. Philips Corporation Wire cutter, particularly for cutting electrical connection wires
US4162574A (en) * 1978-02-27 1979-07-31 Johnston Mack S Hair clipper
USD437453S1 (en) 1999-07-09 2001-02-06 The Sharper Image Personal groomer system
US20020162226A1 (en) * 2000-10-30 2002-11-07 Conair Cip, Inc. Hair clipper with pivoting clipper head assembly
US20030229989A1 (en) * 2002-06-18 2003-12-18 Salman Yusufov Cuticle cutting instrument
US6751866B2 (en) * 2002-06-18 2004-06-22 Salman Yusufov Cuticle cutting instrument
US20060162516A1 (en) * 2002-10-31 2006-07-27 Andis Company Hair trimmer
US20060174487A1 (en) * 2002-10-31 2006-08-10 Andis Company Hair trimmer
US6836965B1 (en) * 2003-03-14 2005-01-04 Alrita Ross Rotational hair cutting device
USD536135S1 (en) * 2005-04-19 2007-01-30 Matsushita Electric Works, Ltd. Nose hair trimmer
US20070028447A1 (en) * 2005-08-05 2007-02-08 Matsushita Electric Works, Ltd. Nose hair cutter
EP1749622A3 (en) * 2005-08-05 2007-10-24 Matsushita Electric Works, Ltd. Nose hair cutter
US7874073B2 (en) 2005-08-05 2011-01-25 Panasonic Electric Works Co., Ltd. Nose hair cutter
US20090223058A1 (en) * 2008-03-05 2009-09-10 Brian Michael Coleman Vacuum Device for Hair Clippings
US8225512B2 (en) * 2008-03-05 2012-07-24 Surgical Site Solutions, Inc. Vacuum device for hair clippings
US20110185578A1 (en) * 2009-03-01 2011-08-04 Surgical Site Solutions, Inc. System and method for hair clipping and removal
US9149943B2 (en) 2009-03-01 2015-10-06 Surgical Site Solutions, Inc. System and method for hair clipping and removal
US10279493B2 (en) 2017-03-30 2019-05-07 Wahl Clipper Corporation Vacuum systems for hair clippers
US20190329431A1 (en) * 2018-04-30 2019-10-31 Lister Shearing Equipment Limited Hair clipper having dual fan motor
WO2021146470A1 (en) * 2020-01-14 2021-07-22 Manscaped, Llc Vibration dampening connector for a nose hair trimmer

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Publication number Publication date
CA935633A (en) 1973-10-23
JPS556361B2 (enExample) 1980-02-15
JPS4855044A (enExample) 1973-08-02

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