CA1295117C - Hair clipper - Google Patents

Hair clipper

Info

Publication number
CA1295117C
CA1295117C CA000539641A CA539641A CA1295117C CA 1295117 C CA1295117 C CA 1295117C CA 000539641 A CA000539641 A CA 000539641A CA 539641 A CA539641 A CA 539641A CA 1295117 C CA1295117 C CA 1295117C
Authority
CA
Canada
Prior art keywords
plates
hair clipper
hair
inlet
openings
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
CA000539641A
Other languages
French (fr)
Inventor
Rick E. Hunts
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 CA1295117C publication Critical patent/CA1295117C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/44Suction means for collecting severed hairs or for the skin to be shaved

Abstract

HAIR CLIPPER
Abstract of the Disclosure A precision hair clipper for cutting the hair of subject to a uniform length which comprises a housing defining a flow chamber attachable to a vacuum hose.
At the inlet of the housing a pair of reciprocating blades are configured to maintain a constant and equal flow of air through the chamber. Each of the blades is symmetrical to the other and features a row of parallel, sharp-edged slots. The row of slots of each blade is slanted in opposite direction to the row of the other blade so that their lateral oscillation results in a plurality of criss-crossing shearing edge action. The blades are driven by a pair of oppositely phased eccentric cams engaging openings in the blades.
Selectable spacing of the clipper in relation to the subject's scalp is provided by a series of snap-on adjustable spacers.

Description

H~IR CLIPP~R

Back~ouncl of the Invention This invention relates to haircutting tools and more particularly to mo~or-driven clippers which are connected to suction devices such as vacuum cleaners;
wherein the airflow is used to pull the air to a convcnient cutting position and to ef~iciently evacuate the clippin~s.
Various devices o~ this type have been proposed in the past. In a ~irst group best exemplified by U.S.
10 Patent Nos. 1,23~,~61 Bourdelat, 2,980,994 Stachon and 3,138,870 Stachon, a rotatinc3 blade is mounted across the vacuum flow channel. A second group of such clippers as disclosed in U~S. Patent Nos. 1,730,889 lloberecht, 3,979,825 Baumann, ~,077,122 ~ollor, Jr. et ]5 al., and ~ ,720 Korf uses oscillating blades, the latter with the acdded improvement of a translaking movement of the oscillating blades across the airflow channel. The avowed object o~ such an impro~ement was to cause a straic~ht ali~nment o~ the hair under the 20 vacuum pull and an even cuttinc3 of the hair to a constant lencJth. The Korf approach requires a complex mechanism and su~fers ~rom the ~act that large quantities o~ hair dr~wn into the vacuum channel, when attacked by the advancing blade may bunch up ~nd bend 25 away from the blade. This may result in a very uneven clipping o~ soma of the hair. The translating movement of the blade carriacJe takes time and consumes a great deal o~ ener~y.
In some o~ the earlier clevices the rotary blad2s 3~ interrerad with the rec~ular ~low of air through the housing, causing pulsations and turbulences which '~3 interfered with the proper alignment of the hair.
In his quest Eor a solution to the problem presented by prior types of clippers, the applicant began experimenting with some concept akin to some of the older and simple designs such as disclosed in Hoberecht. He eventually devised a new blade configuration which palliates all the defects of the prior art.
Summary of the Invention The present invention provides a precision hair clipper for cutting the hair of a subject to a uniform length at a selectable spacing from the subject's scalp which comprises: a housing defining a flow chamber having an inlet and an outlet connectable to a vacuum source; a pair of balanced plates, each plate having a plurality of openings; said plates being slidingly mounted against each other across the inlet; means for oscillating said plates in opposite phases wlthin their own planes; wherein the edges of the openings of one plate cooperate with the edges of the openings in the other plate to shear hair drawn into the housing by said vacuum source; and wherein said openings are shaped and positioned in re]ation to one another to maintain a generally constant aperture area therethrough, throughout a complete oscilLating cycle oE the plates.
The present invention employs a multitude of East-acting cutting elements that prevent the hair Erom gathering in bunches and from bending away from the blade. A simplified driving mechanism is used that minimizes the instrument maintenance neecls and extends its useEul liEe. Vibrations, noise and the welght oE
the device are all greatly reduced. An adjustable spacing between the line of cut and the scalp of the subject is possible for more ;,~..

stylish clipping oE the hair.
srlef Descrlption oE the Drawing Figure l is a perspective view oE the clipper;
Figure 2 is a slde elevatlonal vlew of the cllpper wlth a cutaway in the housing to expose the drive mechanism;
Figure 3 ls a bottom plan vlew of the clipper;
Flgure 4 is a bottom plan vlew of the blades;
Figure 5 is an enlarged detail view of one edge of the blades;
Figure 6 is a perspectlve view of a first style of spacer;
and Figure 7 is a perspective view of a second style of spacer with detachable extension.
Descrlptlon of the Preferred Embodiment Referring now to the drawing, there ls shown a motorized hair clipper 10 housed in an enclosure 11 which extends rearwardly into a tubular handle 12 for attachment to a source of vacuum such as a vacuum cleaner or the like. The enclosure 11 forms a flow chamber 13 with air being drawn through the mouth 14 in the base oE the housing 11. The mouth 14 deEines a rectangular inlet which is spanned by a pair of oscillating plates 15, 16 acting as cutting blades.
The plates whlch are more speciEically ilLustrated in Figure 4 are slidingly mounted against each other. They are supported along their peripheries by a Erame bearing 17 retained in a recess formed at the enclosure 11 and in the bottom cover 18. Each plate 15, 16 comprises a rectangular blade portion 19 with a plurality of cutting slots 20, and a rear projection 21 with a central ~' 3a aperture 22 forming a strap around an eccentric cam 23, 24. The frame bearin~ 17, the outline of which is delineated in broken lines in Figure 4, is ln two sections 25, 26. The first section 25 holds the blade portions 19, and the second section ~5~:g 7 holds the strap 21~ The ~rame bearing 17 confine~ the plates 15, 16 to oscillations along the longitudinal axis of the blade portion 19. In figure 4, the plates are shown at their maximum excursion within the fr~me bearing 17.
The cams 23, 24 are installed on a shaf~ 27 which is mounted orthogonally to the planes of the plates 15, 16 and is supported by bearing 28 in the bottom cover 18 and by bearing 129 in the body of the enclosure 11. The cams 23, 24 are mounted in opposite phase so that the top plate 15 reaches its maximum excursion toward one side when the bottom plate 16 reaches it~ maxLmum excursion toward the opposite side. The balanced configuration and movement of the plates assures a vibration-free operation of the clipper. The shaft 27 is driven by an electrical motor 29 housed in a tubular structure 30 which extends through the flow chamber 13. The air flow through the inlet mouth 14 across the slots 20 of the plates, through the flow chamber 13, past the motor structure 30 and into the vacuum outlet 12 is indicated by split arrow 31 in Figure 2. The shaft 27 extends upwardly through the motor 29 to a knob 32 on top of the enclosure ll. This knob 32 can be used to operate the plates manually for cleaning purposes. The knob could also be removed, and the tip of the shaft connected to another rotating drive, in lieu of the motor 29. A switch 33 in the top of the enclosure 11 controls the energizing of the motor 29. The blade portion 19 of each plate is characterized by a row of parallel ~lots 20 which are oriented obliquely from the direction of oscillation of the plates. The two plAtes 15, 16 are made identical to each other. However, they are staked bacX-to-back 80 that the slots 20 of one plate are slanted in the opposite directîon in relation to the ~lot~
of the other plate.
During the oscillating movement of khe plate~ the edges 34 of two superimposed slot~ criss-cross each other to deine a series of shearing elements. The ''f~

aperture of the combined slots during the entire oscillation of the plates remain essentially constant.
This prevents pulsations and disturbances oE the air flow throu~h the device which could afect the proper alignment of the hair. Any hair which is drawn into ona of the slots is neatly clipped by the scissor-like action of the edges 34. The cutting action can be improved by serrating the ed~es 34 of the slots with hair-line indentation 35 as illustrated in Figure 5.
The wall of the slots need not be slanted in relation to the plane of the plates to obtain a positive shearing action.
The plates are preferably made from tempered steel.
A thickness of at least 1 millimeter is recommended in order to maintain a certain inertia and store sufficient kinetic energy to provide a smooth cutting action.
A variety of spacers 36, 37 may be used to keep the mouth 14 of the clipper 10 at a constant but adjustable distance from the scalp of the subject in order to clip his hair to a predetermined length. The first spacer 36, is made from four plates of plexiglass 38, 39, 40, 41 which define channel 42 whose upper rim 43 can be snapped into the mouth 14 of the clipper lO. Two of the plates 38, 39 forming opposite walls of the channel 42 exkend downwardly further than the two other plates ~0, 41 to form a convenient slicling pair of feet 44, 45 which slide over the subject's scalp, leaving ~ gap ~6 below the two other plates 40, 41 for hair to enter the channel 42 toward the mouth 14 of the clipper 10.
In a second embodiment 37 of the spacer, the upper rim ~7 defines a plane which is oriented obliquely in relation to the longitudinal axis of the channel ~2 formed by the walls of the spacer 37. This type of spacer woulcl be used to taper hair around the ears and neckline. An extension 48 can be inserted between the spacer 37 and the mouth 1~ of the cllpper to increase .~ 7 the cutting distance or to change ths tapering angle depending upon the orientation of the extension ~8 in relation to the spacer 37. When insarted a8 shown in Pigure 7, ~he incline of the base 49 of tha extension would S compensate for the incline defined by the upper rim 50 of the extension 37. If the exten.~ion 37 was turned 180 degree~ the clipping angle would ~e increased.
While the preferred embodLment of the invention has been da~cribed, modifications could be made to it, and other embodiment~ could be devised without departing from the spirit of the invention and the scope of the appended claims .

'~?~

Claims (11)

1. A precision hair clipper for cutting the hair of a subject to a uniform length at a selectable spacing from the subject's scalp which comprises:
a housing defining a flow chamber having an inlet and an outlet connectable to a vacuum source;
a pair of balanced plates, each plate having a plurality of openings;
said plates being slidingly mounted against each other across the inlet;
means for oscillating said plates in opposite phases within their own planes;
wherein the edges of the openings of one plate cooperate with the edges of the openings in the other plate to shear hair drawn into the housing by said vacuum source; and wherein said openings are shaped and positioned in relation to one another to maintain a generally constant aperture area therethrough, throughout a complete oscillating cycle of the plates.
2. The hair clipper claimed in claim 1, wherein said means for oscillating comprises:
means for maintaining the plates in a linear direction throughout said oscillating cycle; and said openings in each one of said plates comprise a plurality of parallel and symmetrical slots oriented obliquely in relation to said linear direction of the plates.
3. The hair clipper claimed in claim 2, wherein the slots of one plate obliquely criss-cross the slots of the other plate.
4. The hair clipper claimed in claim 3, wherein said means for oscillating comprises:
a rotating shaft orthogonal to the planes of the plates;
a pair of oppositely phased eccentric cams mounted on said shaft;
each one of said cams acting on one of said plates; and means for rotating said shaft.
5. The hair clipper claimed in claim 4, wherein said means for rotating comprise a motor.
6. The hair clipper claimed in claim 4, wherein each of said plates has a cut-out forming a strap about one of said cams.
7. The hair clipper claimed in claim 3, wherein the edges of said slots are serrated.
8. The hair clipper claimed in claim 7, wherein said plates are made of steel and have a uniform thickness about said openings of at least 1 millimeter.
9, The hair clipper claimed in claim 3, which further comprises means attachable to said inlet for maintaining a uniform spacing between said inlet and the subject's scalp.
10. The hair clipper claimed in claim 9, wherein said means for maintaining comprises a channel having an upper rim engaging said inlet and two lower projections, each extending from the lower edge of the channel.
11. The hair clipper claimed in claim 9, wherein said means for maintaining comprises a four-walled channel having at one end a rim engaging said inlet and a pair of projections at the other end extending from the edges of two opposite walls of the channel.
CA000539641A 1986-07-07 1987-06-15 Hair clipper Expired - Lifetime CA1295117C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US882,825 1986-07-07
US06/882,825 US4679322A (en) 1986-07-07 1986-07-07 Hair clipper

Publications (1)

Publication Number Publication Date
CA1295117C true CA1295117C (en) 1992-02-04

Family

ID=25381409

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000539641A Expired - Lifetime CA1295117C (en) 1986-07-07 1987-06-15 Hair clipper

Country Status (9)

Country Link
US (1) US4679322A (en)
EP (1) EP0314692B1 (en)
JP (1) JPH062192B2 (en)
AT (1) ATE80573T1 (en)
AU (1) AU594803B2 (en)
BR (1) BR8707769A (en)
CA (1) CA1295117C (en)
DE (1) DE3781801T2 (en)
WO (1) WO1988000111A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4970788A (en) * 1987-08-28 1990-11-20 Hunts Rick E Vacuum-powered hair cutting guide
US4989322A (en) * 1989-06-08 1991-02-05 Duke Clayton Hair shearing device
US4972584A (en) * 1990-03-20 1990-11-27 Baumann John H Haircutting and trimming device
IT1248742B (en) * 1991-04-30 1995-01-26 Modugno Nicola Di HAIR CUTTER
US5142786A (en) * 1991-10-21 1992-09-01 Hunts Rick E Vacuum-drawn hair clipper
US5231762A (en) * 1992-06-15 1993-08-03 Hunts Rick E Grooming attachment for vacuum-drawn clippers
US5377411A (en) * 1993-07-01 1995-01-03 Andriotis; Demetrios Hair cutting appliance
US6742262B2 (en) 2001-04-09 2004-06-01 Conair Corporation Detachable and adjustable blade assembly
US6925728B2 (en) * 2002-03-12 2005-08-09 Kathleen M. Busa Grooming device with vacuum for drying and straightening hair
IL160955A0 (en) * 2004-03-18 2004-08-31 Epilady 2000 Llc Comb adjusting mechanism for hair clipper
CA2486540A1 (en) * 2004-11-24 2005-03-21 Albert Yuk-Wah Lui Hair clipper attachment
US20060230619A1 (en) * 2005-04-18 2006-10-19 Rovcal, Inc. Hair clipper with vacuum collection system
US8484853B1 (en) 2005-08-29 2013-07-16 Kim Laube Hair cutting device with vacuum hair collection system
US20100242286A1 (en) * 2009-03-26 2010-09-30 New Life Ventures, LLC, a Wisconsin limited liability company Hair Cutting Device
US20160199988A1 (en) * 2015-01-08 2016-07-14 Gerald C. Altomare Clipper Positioning Device
EP3395174A1 (en) * 2017-04-28 2018-10-31 Haas Food Equipment GmbH Compact cutting apparatus for a dough extrusion machine
US10569441B2 (en) * 2017-10-16 2020-02-25 Hantover, Inc. Rotary knife providing material removal via suction
JP7253471B2 (en) * 2019-08-02 2023-04-06 株式会社やまびこ Reciprocating cutting blade device and hand-held work machine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1331218A (en) * 1919-02-03 1920-02-17 Severson Samuel Hair-cutting appliance
DE716663C (en) * 1937-06-10 1942-01-26 Svensk Rakklinga Ab Shearer for bald cuts
US2266884A (en) * 1938-01-11 1941-12-23 Martin Brothers Electric Compa Razor head
US2630628A (en) * 1951-08-11 1953-03-10 William R Hall Double-action cam for electrical portable hedge trimmers
US2959854A (en) * 1955-09-21 1960-11-15 Wahl Clipper Corp Cutter head for dry shaver
US3100342A (en) * 1960-10-13 1963-08-13 Schmidt Gerhard R Hair clipper
US4188720A (en) * 1978-06-22 1980-02-19 Anahid Korf Stylist hair clipper
NL8200262A (en) * 1982-01-25 1983-08-16 Mahmoud Ahmad Yassin HAIR CUTTING DEVICE.

Also Published As

Publication number Publication date
AU7692187A (en) 1988-01-29
EP0314692A4 (en) 1989-04-18
EP0314692A1 (en) 1989-05-10
JPH02500167A (en) 1990-01-25
DE3781801T2 (en) 1993-04-01
BR8707769A (en) 1989-08-15
AU594803B2 (en) 1990-03-15
US4679322A (en) 1987-07-14
ATE80573T1 (en) 1992-10-15
EP0314692B1 (en) 1992-09-16
WO1988000111A1 (en) 1988-01-14
JPH062192B2 (en) 1994-01-12
DE3781801D1 (en) 1992-10-22

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