CA1059305A - Hair cutting device - Google Patents
Hair cutting deviceInfo
- Publication number
- CA1059305A CA1059305A CA280,126A CA280126A CA1059305A CA 1059305 A CA1059305 A CA 1059305A CA 280126 A CA280126 A CA 280126A CA 1059305 A CA1059305 A CA 1059305A
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- CA
- Canada
- Prior art keywords
- blade
- hair
- hair cutting
- suction
- gauge
- 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.)
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Abstract
ABSTRACT OF THE DISCLOSURE
A suction type hair cutting device which is comprised of a casing, a suction passage housed by said casing and connec-ted to a vacuum source, and an inlet at the end of said suction passage provided with a fixed blade and an arcuate oscillatable blade. The arcuate oscillatable blade is directly driven by a crank at the output shaft of a motor mounted on the casing, or is driven by a gear mechanism which is rotatable through a flex-ible wire or the like, whereby the arcuate oscillatable blade is slidably oscillated relative to the fixed blade. The suction inlet is provided with means for controlling or turning air flow rearwards of said both blades which are adjacently elastically arranged to each other, so as to cut hair positively. The cut-ting hair length may be easily adjusted with the provision of a suction tube which can be connected to said suction inlet, the suction tube being adjustable in its axial length. Otherwise, the cutting hair length may be also easily adjusted by using a hair cutting gauge which is comprised of a head covering body of wall member of a desired thickness defining a plurality of open-ings for having the hair sucked therethrough, wherein the suction inlet of the hair cutting device is moved along on the outer sur-face of hair cutting gauge during hair cutting operation.
A suction type hair cutting device which is comprised of a casing, a suction passage housed by said casing and connec-ted to a vacuum source, and an inlet at the end of said suction passage provided with a fixed blade and an arcuate oscillatable blade. The arcuate oscillatable blade is directly driven by a crank at the output shaft of a motor mounted on the casing, or is driven by a gear mechanism which is rotatable through a flex-ible wire or the like, whereby the arcuate oscillatable blade is slidably oscillated relative to the fixed blade. The suction inlet is provided with means for controlling or turning air flow rearwards of said both blades which are adjacently elastically arranged to each other, so as to cut hair positively. The cut-ting hair length may be easily adjusted with the provision of a suction tube which can be connected to said suction inlet, the suction tube being adjustable in its axial length. Otherwise, the cutting hair length may be also easily adjusted by using a hair cutting gauge which is comprised of a head covering body of wall member of a desired thickness defining a plurality of open-ings for having the hair sucked therethrough, wherein the suction inlet of the hair cutting device is moved along on the outer sur-face of hair cutting gauge during hair cutting operation.
Description
05~305 This invention relates to hair cutting devices and rnore particularly to an improved suction type hair cutting devlce.
In hair cutting heretofore, comb and scissors and clippers; hand or electric have been used. In each case the person effecting the cutting must have some skill in hair cutting techniques. This has often preventedan unskilled person from cutting hair at home or elsewhere. Moreover~, in the con-ventional devices cut hair is scattered on the floor below where the hair is cut, resulting in troublesome sweeping.
According to the present invention, there is provided a suction type hair cutting device comprising a casing having an airpassage therethrough, one end of said air passage forming a suction inlet and the other end of said air passage being adapted for connection to a vacuum source; a fixed circular ..
blade positioned in said suction inlet; an arcuately oscilla-tory circular blade positioned adjacent to said fi~ed blade and arcuately oscillatory with respect thereto; and an annular pro- ~
jection formed around the lnner surface of said suction inlet, ;-;
wherein said fixed blade and said arcuately oscillatory blade ~ ;
are positioned wi-th respect to said annular projection to form ~ -an air flow passage therebetween.
The present invention, therefore, provides a cutting device which requires less skill in hair cutting, can cut hair ~
to any desired length, and which does not scatter cut hair on ` -the floor where the hair is cut. The device may also include means for adjusting the hair length to be cut.
The present invention will be further illustrated by way of the accompanying drawings in which:
Fig. 1 is an elevational view partly in cross section showing a hair cutting device of a preferred ernbodiment of the present invention;
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, ,,, -- 1 .: . . :. ~ . ., . , . ~ :
93~5 Fig. 2 is a cross sectional view taken along the line II-II of Fig. l;
Fig. 3 is an elevational view partly in cross section showing another embodiment of the present invention;
Fig. 4 is a perspective view showing connecting means of a hair cutting device of the present invention;
Fig. 5 is an elevational view partly in cross section showing a further embodiment of the present invention;
Fig. 6 is a plan view partly in cross section of the hair cutting device of Fig. S;
Fig. 7 is a perspective view showing a gear mechanism of the hair cutting device of Fig. 5;
Fig. 8 is a bottom view showing a suction inlet of the hair cutting device of Fig. 5;
Fig. 9 is an elevational view partly in cross section showing a suction type which is a preferred means for adjusting the hair length to be cut by a hair cutting device;
Fig. 10 is a cross sectional view showing a pressure -regulating valve means used for a hair cutting device of the present invention;
Fig. 11 is a side elevational view showing a hair cutting gauge which is another preferred means for adjusting the hair length to be cut by a hair cutting device;
Fig. 12 is a rear elevational view of the hair cutting gauge of Fig. 11; -Fig. 13 is a cross sectional view taken along the line XIII-XIII of Fig. 12;
Fig. 14 is a cross sectional view taken along the line XIV-XIV of Fig. 11;
Fig. 15 is a side elevational view showing another `~ , embodiment of the hair cutting gauge;
In hair cutting heretofore, comb and scissors and clippers; hand or electric have been used. In each case the person effecting the cutting must have some skill in hair cutting techniques. This has often preventedan unskilled person from cutting hair at home or elsewhere. Moreover~, in the con-ventional devices cut hair is scattered on the floor below where the hair is cut, resulting in troublesome sweeping.
According to the present invention, there is provided a suction type hair cutting device comprising a casing having an airpassage therethrough, one end of said air passage forming a suction inlet and the other end of said air passage being adapted for connection to a vacuum source; a fixed circular ..
blade positioned in said suction inlet; an arcuately oscilla-tory circular blade positioned adjacent to said fi~ed blade and arcuately oscillatory with respect thereto; and an annular pro- ~
jection formed around the lnner surface of said suction inlet, ;-;
wherein said fixed blade and said arcuately oscillatory blade ~ ;
are positioned wi-th respect to said annular projection to form ~ -an air flow passage therebetween.
The present invention, therefore, provides a cutting device which requires less skill in hair cutting, can cut hair ~
to any desired length, and which does not scatter cut hair on ` -the floor where the hair is cut. The device may also include means for adjusting the hair length to be cut.
The present invention will be further illustrated by way of the accompanying drawings in which:
Fig. 1 is an elevational view partly in cross section showing a hair cutting device of a preferred ernbodiment of the present invention;
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, ,,, -- 1 .: . . :. ~ . ., . , . ~ :
93~5 Fig. 2 is a cross sectional view taken along the line II-II of Fig. l;
Fig. 3 is an elevational view partly in cross section showing another embodiment of the present invention;
Fig. 4 is a perspective view showing connecting means of a hair cutting device of the present invention;
Fig. 5 is an elevational view partly in cross section showing a further embodiment of the present invention;
Fig. 6 is a plan view partly in cross section of the hair cutting device of Fig. S;
Fig. 7 is a perspective view showing a gear mechanism of the hair cutting device of Fig. 5;
Fig. 8 is a bottom view showing a suction inlet of the hair cutting device of Fig. 5;
Fig. 9 is an elevational view partly in cross section showing a suction type which is a preferred means for adjusting the hair length to be cut by a hair cutting device;
Fig. 10 is a cross sectional view showing a pressure -regulating valve means used for a hair cutting device of the present invention;
Fig. 11 is a side elevational view showing a hair cutting gauge which is another preferred means for adjusting the hair length to be cut by a hair cutting device;
Fig. 12 is a rear elevational view of the hair cutting gauge of Fig. 11; -Fig. 13 is a cross sectional view taken along the line XIII-XIII of Fig. 12;
Fig. 14 is a cross sectional view taken along the line XIV-XIV of Fig. 11;
Fig. 15 is a side elevational view showing another `~ , embodiment of the hair cutting gauge;
- 2 -~Q59305 Fig. 16 is a rear elevational view showing the hair cutting gauge of Fig. 15.
Referring to the drawings, in Figs. 1 and 2, a casing 10 of the hair cutting device is in the form of generally L-shaped tube defining an air passage 12 therein. The air passage 12 has opposite ends, one end being connected to a vacuum source (not shown) and the other end being provided with a suction inlet 18.
The casing 10 has a concave portion 20 covered by a covering member 22 on which a motor 26 is mounted by means of a bolt 24. The output shaft 28 of the motor 26 vertically extends into the concaved portion 20 through the covering mem-ber 22 and has an end internally of the concaved portion, said end being provided with a crank means 30 within said concaved portion.
The cover 22 has a shaft means 34 vertically extending therefrom down to the suction inlet 18 through the bottom wall 32 of the concaved portion 20. A fixed blade 36 is fitted and secured to the end of the shaft 34 by means of a bolt 38.
A rotatable pipe member 40 is provided around the shaft 34 and has a link 44 transversely extending relative thereto at its base end portion 42. The link is formed with a recess 46 to receive the crank 30 therein. Accordingly the link 44 is oscillated by the mo-tion of the crank 30, and thus the pipe member 40 is reciprocably oscillated.
At a predetermined axial portion of the pipe member 40, a ring 48 is engaged thereàround, which ring 48 is supported by a securing piece 50 provided around the pipe member 40 at an adjacent position relative to the ring. l'he securing member is so positioned to prevent the movement of the ring 48 toward the forward end of the pipe member 4~. A compression spring 52 is positioned between the ring 48 and the bottom wall 32, and the ~'' ' , `-: 10~93~5 pipe member 40 is thereby biased in a direction toward the forward end thereof. At the end of the pipe member 40, there is formed a blade engaging stepped portion 54 of rectangular cross section, and a blade 56 is engaged thereon for oscilla-tory movement cooperatively with the pipe member 40~ The blade 56 is biased toward the fixed blade 36 by the effect of the compression spring 52, the fixed blade 36 being attached to the end of the shaft 34 as before mentioned. These blades gener- -ally have a round form. The blade 56 elastically and ad~acently placed relative to the fixed blade 36 results in a positive hair cutting operation.
Annular air sealing meMber 58 is provided at the bottom wall 32 on the peripheral end thereof facing to the pipe member 40, and is engaged with the corresponding portion of the pipe member 40 so as to seal the concaved portion 20 from the air passage 12. -A circular projection 60 is formed at the suction inlet 18 to give a predetermined space between and the end 16 of the inlet 18. The fixed blade 36 and the blade 56 are positioned nearer the plane of the inlet end 16 than that of the circular projection 60.
The fixed blade 36 and the blade 56 each have a circumferential end spaced from the inner surface of the suction inlet 18. The circumferential end portions of both -blades positively cut hair. The suction air flow F coming -from the inlet end 16 introduces the hair through both blades to the circular projection 60 where the hair is held behind the circumferential end of the blade 56~ and the hair is in a suitable position to be cut.
When the thus assembled hair cutting device is oper-ated, the hair to be cut is introduced through the inlet end 16 and positioned adjacent the circumferences of the fixed blade .--~ _ 4 _ oS93~5 36 and the blade 56. Then the hair is cut by the sliding oscillation of the blade 56 relative to the fixed blade 36.
Then, the severed hairs are carried away through the suction passage 12 to the vacuum source, thus not scattering the hairs on the floor.
A hair cutting device of another embodiment of the present invention will be described hereinafter according to the drawings.
Referring now to Fig. 3 and 4, a fixed blade 36 and ;
a blade 56 are both formed in a circular shape and have cutting portions at the inner peripheries thereof.
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More particularly, the fixed blade 36 is so formed as to be securely fitted to the end 16 of the suction inlet 18 by means of a fixlng nut 62 which is threadedly engaged with the threaded outer sur~ace of the inlet 18, while the blade 56 is so formed as to be placed at the inner surface of the suc-tion inlet 18 in an abutting relation to the fixed blade 36.
The blade 56 is interconnected with the pipe member 40 through a connecting means 64. The connecting means 64 includes a circular plate 66, supporting bars 70 extending downwards therefrom to a given length, and a ringed piece 68 fitted to each remote end of the bars 70. The circular plate 66 is engaged with a rotatable pipe member 40, and the ring 68 is engaged with the blade 56, thus enabling a rotatable move-ment of the blade 56 during operation.
The circular plate 66 has a rectangular aperture 72 in the center portion therçof, through which the pipe member 40 is extended such that the connecting means 64 is securely con-nected thereto at a stepped portion 54. The connecting means 64 is thus cooperatively movable therewith.
Compression spring 52 is positioned between the plate 66 and the bottom wall 32 of the concaved portion of the casing '`,,:
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93~)5 10, so that the connecting means 64 is biased toward the for-ward end 16 of the device.
The annular piece 68 has a plurality of projections 74 at the circumferential end facing to the blade 56, for engaging with the blade 56. Accordingly, the projections 74 are in contact with the blade 56, and thus the blade 56 is biased to the fixed blade 36.
At the end of the shaft 34, there is provided an air flow turning or controlling plate 76 fitted transversely rela-tive thereto and secured by the bolt 78. The plate 76 is spaced above the blade 36 and 56, and is of a size to allow a ;
sufficient air flow for the hair cutting operation. Accordingly the air flow F coming Erom the inlet end 16 is passed through the inner circumferential ends of the fixed blade 36 and the blade 56 and then -through around the plate 76 and into the suction passage 12.
In the thus assembled hair cutting device, the hair sucked up through the inlet end 16 is held behind the blade 56, because of the effect of the air flow turning plate 76, result-ing in a positive hair cutting operation.
The hair cutting device of this embodiment wherein the hair is cut by the inner circumferential ends of the circular fixed blade 36 and blade 56, is not provided with the circular projection 60 of Fig~ 1 in the inlet 18 and is therefore simpli-fied with regard to the structure of the casing 10.
Further in this second embodiment of the present inven-tion, the structure of the pipe member 40 is simplified, because the spring 52 is received by the circular plate 66, instead of the ring 48 and the securing member 50 as in the first embodi-ment shown in Fig. l. Accordingly, the hair cutting device may be assembled in a reduced number of steps.
Referring now to Fig. 5 to Fig. 8, which show a third .~ - 6 -~)59305 embodiment of the present invention, a year mechanism G is accommodated in the concaved portion 20 of the casing 10, which gear mechanism G is comprised of a worm 80 and a worm gear 82 interengaged with one another. The worm 80 is in a position axially aligned with and spaced from the boss 8~, the boss 84 being formed on the inside surface of the cover 22. ~ `~
The worm gear 82 is rotatably journalled by means of a pin 86 which is vertically extending from the outside of the cover 22 into the center portion of the worm gear 82. A portion along the axial length of the pin 86 is secured with a retaining ring .
88 provided on the inner surface of the cover 22.
The worm gear 82 is further provided with a pin 90 vertically extending therethrough. The pin 90 is engaged with recess 46 in the link 44 provided on the pipe member 40, and is securely surrounded with a retaining ring 92 at a portion thereof, where the retaining ring 92 is adjacently placed between the lower surface of the worm gear 82 and the upper ~ .
surface of the link 44. Thus the pin 90 can not fall out of the link 44.
A flexible wire drive member 94 has one end connected to the end 96 of the worm 80. The wire member 94 extends through the casing 10 longitudinally along the air passage 12, and extends from the end 14 of the casing 10. The wire member 94 has its one end connected to the power source (not shown), in common with the vacuum source (not shown), and transfers rotational motion to the worm 80 therefrom.
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The wire member 94 is shielded with a protective tube 98 of a flexible material between the end 14 of the casing 10 and the power source. The worm 80 is driven through the wire member 94 and thus the worm gear 82 is rotated. The rotation of the worm gear 82 imparts reciprocable movement to the link 4~ through the pin 90. This results in reciprocable motion of the blade 56.
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~ 7 ~ ~Q5931~5 The cover 22 is held over the casing 10 by a bolt 100, so as to seal the concave portion 20. A spindle 102 extends through the axial length of the shaft 34 vertically extending from the cover 22. The upper end of the spindle 102 extends above the cover 22. The spindle 102 has a lower end 104 of large dimension which is positioned adjacent the inlet 18 when the spindle 102 is inserted.
The upper end of the spindle 102 is threadedly engaged with a thumb nut 106. A spring 108 is provided between the thumb nut 106 and the outer surface of the cover 22 so as to resiliently bias the fixed blade 36 toward the rotatable blade 56.
The hair cutting device of this third embodiment o~
the present invention can be handled more easily, because there is no need to provide a motor on the casing 10, as in the formerly described embodiments, and the wire member 94 instead o~ a motor is employed for connecting the body of the hair cut-ting devlce to power source.
Further a unitary power source is used for driving the wire member 94 and a vacuum pump, and accordingly a simpler-construction results.
For adjusting the hair length to be Cllt, a suction tube 110 may be used as shown in Fig. 9. The suction tube 110 is comprised of an upper tube member 112 and a lower tube mem-ber 114; wherein the lower tube member 114 telescopes into the upper tube member 112. The tube member 112 has an upper end portion 116 and a lower end portion 118 each formed with short vertically extending slits 120, so that the diameter of each end may be extensibly and reducibly varied. Nuts 122 and 124 are threadedly engaged with the corresponding outer surfaces of the end portions 116 and 118, respectively.
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' ~ ' ' ' ' , 10~ii93~5 Accordingly, the threaded enga~ement of the nut 122 with the upper end portion 116 reduces the diameter of the end portion 116 and then the tube 110 may be securely attached to the 16 of the hair cutting body. Also the threaded engagement of the nut 124 with the lower end portion 118 reduces the diameter of the end portion 11~, and the lower slidable -tube member 114 can be securely at-tached to the upper ~.-tube member 112.
The lower tube member 114 has an upper end 126 which slides into the lower end 118 of -the upper tube member 112, and a lower end 128 formed with a plurality of projections 130. .
When the suction tube 110 is connected to the hair cutting dev.ice, such that the end 116 of the suction tube 110 telescope over the end 16 of the hair cuttiny device, the hair l.ength to be cut will be the effective length of the suction tube 110. The hair length to be cut may be variable to a desired length, by axially adjusting the axial length of the tube 110. The length of the tube 110 can be easily varied by loosening the nut 124 and axially sliding the lower tube member 114 along the upper tube member 112. The slidable tube 114 is formed with a plurality of projections at the lower end thereof to ensure that air may pass into the tube 110 during operation.
Another means for adjusting -the cutting hair length will be hereinafter described. :
Referring now to the Figs. 11 to 14, a hair cutting gauge 132 is comprised of a head covering body. A wall member 134 having a desired thickness defines a plurality of openings 136 in honeycomb-like shape or grid pattern covering the head.
The hair cutting gauge 132 has an outer surface 138 configured .
: 30 in a shape according to a desired hair style, and an inner sur-: face 140 provided with a plurality of short projections 142 at given portions thereon for retaining suitable interstices 146 . .. .
0593~5 between the head surface 144 and the inner surface 140 when the gauge is in situ on the head. The hair cutting gauge 132 may be formed thinner at the back end portion ancl both side portions as desired, thereby presenting a comb-like pattern as shown by `
numeral 148. In this respect, any configuration of the hair -cutting gauge may be used according to the request of a person whose hair is to be cut.
The gauge may be formed in such a shape which does not cover the top portion of the head as shown in Figs. 15 and ``
16, and the gauge may be attached on a suitable head position according to the size of a head, by sliding the gauge along the head.
Numeral 150 is a band for fixing the gauge 132 on the head 144, and numeral 152 is a suction type hair cuttlng device having a suction inlet 18 and cutting blades 36 and 56.
During hair cutting, the gauge 132 is put on the head 144 and fixed by the band 150, and then the hair cutting device 152 is moved along on the outer surface 138 of the gauge 132, whereby the hair is sucked through the openings 136 and cut in a shape determined by the type of the gauge used. When the hair cutting device is operating at one opening, the hair around that opening is also sucked up through the interstices 146, and thus un-uniform or irregular hair cutting can be eliminated.
Referring to Figs. 15 and 16, when the gau~e 132 with no covering for the top half of the head is employed, the lower half of the head is cut along the gauge 132, and the top half may be cut with the use of suction tube 110 of a given length which is attached to the end of the hair cutting device 152.
Thus a desired hair style can be obtained in accord-ance witX the elected type of gauge.
As shown in Fig. 10, a pressure regulating valve means 156 is provided on a tube line 154. The tube line 154 is con-, ' ' ~ . ` ' ; , nected to the basic end 14 of the air passage 12 at one end, and the vacuum source at the other end, thereby intercommunicat- ~
ing the air passage 12 to the vacuum source. The pressure :
regulating valve 156 controls the pressure in the tube line 154. . .
On a given portion of the tube line 154, an opening defined by a wall 158 is provided for receiving therein the pressure regulating valve 156. The inner surface of the wall 158 is threadedly engaged wi-th the outer side surface of the valve 156, and a ring 162 is securely fit to the bottom end of the wall 158. The pressure regulating valve 156 is comprised of a ball 164, a compression spring 166 disposed just under the ball 164, and a cylinder 168 housing the ball 164 and the spring ` ..
166 therein, the compression spring 166 forcing the ball 164 -onto the wall of the cylinder 168. The spring 166 is supported by the ring 162 through a washer 170.
The cylinder 168 has a hole 174 opening to its top -surface 172, to the inside wall of which the ball 164 is forc-ibly fitted.
As the cylinder 168 is threadedly engaged with the .
threaded wall 158 extending from the tube line, the pressure of The ball 164 relative to the hole 174 can be controlled by .axially adjusting the threaded engagement of the cylinder 168 >
relative to the wall 158. The ball 164 is forced toward the ring 162 when the pressure in the tube line 154 is lowered to a value less than a certain value determined by a compression force of the spring 166. When this happens, air is lntroduced from the holè 174, resulting in increasing the pressure in the . .:~
tube line 154. Accordingly, when the lower end 128 of the suc- .
tion tube 110 is sealed with hair or the head skin, the pressure in the tube line 154 is instantly increased and such sealing situation is readily removed.
Any type of vacuum sources may be applicable to a hair .~ ' ', . . ..
., , , , ~ .
g3~35 cutting device of this invention, and it should be noted that an electric home cleaner can be a vacuum source of this inven-tion and is easily connected to the end of the tube line 154.
This eliminates the necessity to provide a particular vacuum source used only for the hair cutting device, and moreover facilitates to completely collect cut hairs, bringing out good advantages in home hair cutting.
When the pressure regulating valve means 156 is not employed, the basic end 14 of the air passage 12 of the hair cutting device may be directly connected with the top end of the tube of electric home cleaner. As shown in Figs. 1, 3, 5 and 7, the basic end 14 of the air passage 12 is designed in a manner to be easily connected to the tube end of -the electric home cleaner.
~s descr.ibed hereinabove, the hair cutting device of the present invention provides many advantages in hair cutting wherein a fixed blade and a rotatable blade are disposed in the suction inlet of the air passage in elastically adjacent relationship to each other, the hairs cut by said blades pass through the air passage into the vacuum source withou-t being scattered on the floor, and the cutting hair length can be easily adjusted with the use of the suction -tube variable in its axial length.
:
Referring to the drawings, in Figs. 1 and 2, a casing 10 of the hair cutting device is in the form of generally L-shaped tube defining an air passage 12 therein. The air passage 12 has opposite ends, one end being connected to a vacuum source (not shown) and the other end being provided with a suction inlet 18.
The casing 10 has a concave portion 20 covered by a covering member 22 on which a motor 26 is mounted by means of a bolt 24. The output shaft 28 of the motor 26 vertically extends into the concaved portion 20 through the covering mem-ber 22 and has an end internally of the concaved portion, said end being provided with a crank means 30 within said concaved portion.
The cover 22 has a shaft means 34 vertically extending therefrom down to the suction inlet 18 through the bottom wall 32 of the concaved portion 20. A fixed blade 36 is fitted and secured to the end of the shaft 34 by means of a bolt 38.
A rotatable pipe member 40 is provided around the shaft 34 and has a link 44 transversely extending relative thereto at its base end portion 42. The link is formed with a recess 46 to receive the crank 30 therein. Accordingly the link 44 is oscillated by the mo-tion of the crank 30, and thus the pipe member 40 is reciprocably oscillated.
At a predetermined axial portion of the pipe member 40, a ring 48 is engaged thereàround, which ring 48 is supported by a securing piece 50 provided around the pipe member 40 at an adjacent position relative to the ring. l'he securing member is so positioned to prevent the movement of the ring 48 toward the forward end of the pipe member 4~. A compression spring 52 is positioned between the ring 48 and the bottom wall 32, and the ~'' ' , `-: 10~93~5 pipe member 40 is thereby biased in a direction toward the forward end thereof. At the end of the pipe member 40, there is formed a blade engaging stepped portion 54 of rectangular cross section, and a blade 56 is engaged thereon for oscilla-tory movement cooperatively with the pipe member 40~ The blade 56 is biased toward the fixed blade 36 by the effect of the compression spring 52, the fixed blade 36 being attached to the end of the shaft 34 as before mentioned. These blades gener- -ally have a round form. The blade 56 elastically and ad~acently placed relative to the fixed blade 36 results in a positive hair cutting operation.
Annular air sealing meMber 58 is provided at the bottom wall 32 on the peripheral end thereof facing to the pipe member 40, and is engaged with the corresponding portion of the pipe member 40 so as to seal the concaved portion 20 from the air passage 12. -A circular projection 60 is formed at the suction inlet 18 to give a predetermined space between and the end 16 of the inlet 18. The fixed blade 36 and the blade 56 are positioned nearer the plane of the inlet end 16 than that of the circular projection 60.
The fixed blade 36 and the blade 56 each have a circumferential end spaced from the inner surface of the suction inlet 18. The circumferential end portions of both -blades positively cut hair. The suction air flow F coming -from the inlet end 16 introduces the hair through both blades to the circular projection 60 where the hair is held behind the circumferential end of the blade 56~ and the hair is in a suitable position to be cut.
When the thus assembled hair cutting device is oper-ated, the hair to be cut is introduced through the inlet end 16 and positioned adjacent the circumferences of the fixed blade .--~ _ 4 _ oS93~5 36 and the blade 56. Then the hair is cut by the sliding oscillation of the blade 56 relative to the fixed blade 36.
Then, the severed hairs are carried away through the suction passage 12 to the vacuum source, thus not scattering the hairs on the floor.
A hair cutting device of another embodiment of the present invention will be described hereinafter according to the drawings.
Referring now to Fig. 3 and 4, a fixed blade 36 and ;
a blade 56 are both formed in a circular shape and have cutting portions at the inner peripheries thereof.
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More particularly, the fixed blade 36 is so formed as to be securely fitted to the end 16 of the suction inlet 18 by means of a fixlng nut 62 which is threadedly engaged with the threaded outer sur~ace of the inlet 18, while the blade 56 is so formed as to be placed at the inner surface of the suc-tion inlet 18 in an abutting relation to the fixed blade 36.
The blade 56 is interconnected with the pipe member 40 through a connecting means 64. The connecting means 64 includes a circular plate 66, supporting bars 70 extending downwards therefrom to a given length, and a ringed piece 68 fitted to each remote end of the bars 70. The circular plate 66 is engaged with a rotatable pipe member 40, and the ring 68 is engaged with the blade 56, thus enabling a rotatable move-ment of the blade 56 during operation.
The circular plate 66 has a rectangular aperture 72 in the center portion therçof, through which the pipe member 40 is extended such that the connecting means 64 is securely con-nected thereto at a stepped portion 54. The connecting means 64 is thus cooperatively movable therewith.
Compression spring 52 is positioned between the plate 66 and the bottom wall 32 of the concaved portion of the casing '`,,:
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93~)5 10, so that the connecting means 64 is biased toward the for-ward end 16 of the device.
The annular piece 68 has a plurality of projections 74 at the circumferential end facing to the blade 56, for engaging with the blade 56. Accordingly, the projections 74 are in contact with the blade 56, and thus the blade 56 is biased to the fixed blade 36.
At the end of the shaft 34, there is provided an air flow turning or controlling plate 76 fitted transversely rela-tive thereto and secured by the bolt 78. The plate 76 is spaced above the blade 36 and 56, and is of a size to allow a ;
sufficient air flow for the hair cutting operation. Accordingly the air flow F coming Erom the inlet end 16 is passed through the inner circumferential ends of the fixed blade 36 and the blade 56 and then -through around the plate 76 and into the suction passage 12.
In the thus assembled hair cutting device, the hair sucked up through the inlet end 16 is held behind the blade 56, because of the effect of the air flow turning plate 76, result-ing in a positive hair cutting operation.
The hair cutting device of this embodiment wherein the hair is cut by the inner circumferential ends of the circular fixed blade 36 and blade 56, is not provided with the circular projection 60 of Fig~ 1 in the inlet 18 and is therefore simpli-fied with regard to the structure of the casing 10.
Further in this second embodiment of the present inven-tion, the structure of the pipe member 40 is simplified, because the spring 52 is received by the circular plate 66, instead of the ring 48 and the securing member 50 as in the first embodi-ment shown in Fig. l. Accordingly, the hair cutting device may be assembled in a reduced number of steps.
Referring now to Fig. 5 to Fig. 8, which show a third .~ - 6 -~)59305 embodiment of the present invention, a year mechanism G is accommodated in the concaved portion 20 of the casing 10, which gear mechanism G is comprised of a worm 80 and a worm gear 82 interengaged with one another. The worm 80 is in a position axially aligned with and spaced from the boss 8~, the boss 84 being formed on the inside surface of the cover 22. ~ `~
The worm gear 82 is rotatably journalled by means of a pin 86 which is vertically extending from the outside of the cover 22 into the center portion of the worm gear 82. A portion along the axial length of the pin 86 is secured with a retaining ring .
88 provided on the inner surface of the cover 22.
The worm gear 82 is further provided with a pin 90 vertically extending therethrough. The pin 90 is engaged with recess 46 in the link 44 provided on the pipe member 40, and is securely surrounded with a retaining ring 92 at a portion thereof, where the retaining ring 92 is adjacently placed between the lower surface of the worm gear 82 and the upper ~ .
surface of the link 44. Thus the pin 90 can not fall out of the link 44.
A flexible wire drive member 94 has one end connected to the end 96 of the worm 80. The wire member 94 extends through the casing 10 longitudinally along the air passage 12, and extends from the end 14 of the casing 10. The wire member 94 has its one end connected to the power source (not shown), in common with the vacuum source (not shown), and transfers rotational motion to the worm 80 therefrom.
.
The wire member 94 is shielded with a protective tube 98 of a flexible material between the end 14 of the casing 10 and the power source. The worm 80 is driven through the wire member 94 and thus the worm gear 82 is rotated. The rotation of the worm gear 82 imparts reciprocable movement to the link 4~ through the pin 90. This results in reciprocable motion of the blade 56.
~'~'s'~
~ 7 ~ ~Q5931~5 The cover 22 is held over the casing 10 by a bolt 100, so as to seal the concave portion 20. A spindle 102 extends through the axial length of the shaft 34 vertically extending from the cover 22. The upper end of the spindle 102 extends above the cover 22. The spindle 102 has a lower end 104 of large dimension which is positioned adjacent the inlet 18 when the spindle 102 is inserted.
The upper end of the spindle 102 is threadedly engaged with a thumb nut 106. A spring 108 is provided between the thumb nut 106 and the outer surface of the cover 22 so as to resiliently bias the fixed blade 36 toward the rotatable blade 56.
The hair cutting device of this third embodiment o~
the present invention can be handled more easily, because there is no need to provide a motor on the casing 10, as in the formerly described embodiments, and the wire member 94 instead o~ a motor is employed for connecting the body of the hair cut-ting devlce to power source.
Further a unitary power source is used for driving the wire member 94 and a vacuum pump, and accordingly a simpler-construction results.
For adjusting the hair length to be Cllt, a suction tube 110 may be used as shown in Fig. 9. The suction tube 110 is comprised of an upper tube member 112 and a lower tube mem-ber 114; wherein the lower tube member 114 telescopes into the upper tube member 112. The tube member 112 has an upper end portion 116 and a lower end portion 118 each formed with short vertically extending slits 120, so that the diameter of each end may be extensibly and reducibly varied. Nuts 122 and 124 are threadedly engaged with the corresponding outer surfaces of the end portions 116 and 118, respectively.
, ,~
' ~ ' ' ' ' , 10~ii93~5 Accordingly, the threaded enga~ement of the nut 122 with the upper end portion 116 reduces the diameter of the end portion 116 and then the tube 110 may be securely attached to the 16 of the hair cutting body. Also the threaded engagement of the nut 124 with the lower end portion 118 reduces the diameter of the end portion 11~, and the lower slidable -tube member 114 can be securely at-tached to the upper ~.-tube member 112.
The lower tube member 114 has an upper end 126 which slides into the lower end 118 of -the upper tube member 112, and a lower end 128 formed with a plurality of projections 130. .
When the suction tube 110 is connected to the hair cutting dev.ice, such that the end 116 of the suction tube 110 telescope over the end 16 of the hair cuttiny device, the hair l.ength to be cut will be the effective length of the suction tube 110. The hair length to be cut may be variable to a desired length, by axially adjusting the axial length of the tube 110. The length of the tube 110 can be easily varied by loosening the nut 124 and axially sliding the lower tube member 114 along the upper tube member 112. The slidable tube 114 is formed with a plurality of projections at the lower end thereof to ensure that air may pass into the tube 110 during operation.
Another means for adjusting -the cutting hair length will be hereinafter described. :
Referring now to the Figs. 11 to 14, a hair cutting gauge 132 is comprised of a head covering body. A wall member 134 having a desired thickness defines a plurality of openings 136 in honeycomb-like shape or grid pattern covering the head.
The hair cutting gauge 132 has an outer surface 138 configured .
: 30 in a shape according to a desired hair style, and an inner sur-: face 140 provided with a plurality of short projections 142 at given portions thereon for retaining suitable interstices 146 . .. .
0593~5 between the head surface 144 and the inner surface 140 when the gauge is in situ on the head. The hair cutting gauge 132 may be formed thinner at the back end portion ancl both side portions as desired, thereby presenting a comb-like pattern as shown by `
numeral 148. In this respect, any configuration of the hair -cutting gauge may be used according to the request of a person whose hair is to be cut.
The gauge may be formed in such a shape which does not cover the top portion of the head as shown in Figs. 15 and ``
16, and the gauge may be attached on a suitable head position according to the size of a head, by sliding the gauge along the head.
Numeral 150 is a band for fixing the gauge 132 on the head 144, and numeral 152 is a suction type hair cuttlng device having a suction inlet 18 and cutting blades 36 and 56.
During hair cutting, the gauge 132 is put on the head 144 and fixed by the band 150, and then the hair cutting device 152 is moved along on the outer surface 138 of the gauge 132, whereby the hair is sucked through the openings 136 and cut in a shape determined by the type of the gauge used. When the hair cutting device is operating at one opening, the hair around that opening is also sucked up through the interstices 146, and thus un-uniform or irregular hair cutting can be eliminated.
Referring to Figs. 15 and 16, when the gau~e 132 with no covering for the top half of the head is employed, the lower half of the head is cut along the gauge 132, and the top half may be cut with the use of suction tube 110 of a given length which is attached to the end of the hair cutting device 152.
Thus a desired hair style can be obtained in accord-ance witX the elected type of gauge.
As shown in Fig. 10, a pressure regulating valve means 156 is provided on a tube line 154. The tube line 154 is con-, ' ' ~ . ` ' ; , nected to the basic end 14 of the air passage 12 at one end, and the vacuum source at the other end, thereby intercommunicat- ~
ing the air passage 12 to the vacuum source. The pressure :
regulating valve 156 controls the pressure in the tube line 154. . .
On a given portion of the tube line 154, an opening defined by a wall 158 is provided for receiving therein the pressure regulating valve 156. The inner surface of the wall 158 is threadedly engaged wi-th the outer side surface of the valve 156, and a ring 162 is securely fit to the bottom end of the wall 158. The pressure regulating valve 156 is comprised of a ball 164, a compression spring 166 disposed just under the ball 164, and a cylinder 168 housing the ball 164 and the spring ` ..
166 therein, the compression spring 166 forcing the ball 164 -onto the wall of the cylinder 168. The spring 166 is supported by the ring 162 through a washer 170.
The cylinder 168 has a hole 174 opening to its top -surface 172, to the inside wall of which the ball 164 is forc-ibly fitted.
As the cylinder 168 is threadedly engaged with the .
threaded wall 158 extending from the tube line, the pressure of The ball 164 relative to the hole 174 can be controlled by .axially adjusting the threaded engagement of the cylinder 168 >
relative to the wall 158. The ball 164 is forced toward the ring 162 when the pressure in the tube line 154 is lowered to a value less than a certain value determined by a compression force of the spring 166. When this happens, air is lntroduced from the holè 174, resulting in increasing the pressure in the . .:~
tube line 154. Accordingly, when the lower end 128 of the suc- .
tion tube 110 is sealed with hair or the head skin, the pressure in the tube line 154 is instantly increased and such sealing situation is readily removed.
Any type of vacuum sources may be applicable to a hair .~ ' ', . . ..
., , , , ~ .
g3~35 cutting device of this invention, and it should be noted that an electric home cleaner can be a vacuum source of this inven-tion and is easily connected to the end of the tube line 154.
This eliminates the necessity to provide a particular vacuum source used only for the hair cutting device, and moreover facilitates to completely collect cut hairs, bringing out good advantages in home hair cutting.
When the pressure regulating valve means 156 is not employed, the basic end 14 of the air passage 12 of the hair cutting device may be directly connected with the top end of the tube of electric home cleaner. As shown in Figs. 1, 3, 5 and 7, the basic end 14 of the air passage 12 is designed in a manner to be easily connected to the tube end of -the electric home cleaner.
~s descr.ibed hereinabove, the hair cutting device of the present invention provides many advantages in hair cutting wherein a fixed blade and a rotatable blade are disposed in the suction inlet of the air passage in elastically adjacent relationship to each other, the hairs cut by said blades pass through the air passage into the vacuum source withou-t being scattered on the floor, and the cutting hair length can be easily adjusted with the use of the suction -tube variable in its axial length.
:
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A suction type hair cutting device comprising a casing having an airpassage therethrough, one end of said air passage forming a suction inlet and the other end of said air passage being adapted for connection to a vacuum source; a fixed circular blade positioned in said suciton inlet; an arcuately oscillatory circular blade positioned adjacent to said fixed blade and arcuately oscillatory with respect thereto; and an annular projection formed around the inner surface of said suction inlet, wherein said fixed blade and said arcuately oscillatory blade are positioned with respect to said annular projection to form an air flow passage therebetween.
2. A device as set forth in claim 1 including a motor means having an output shaft mounted on said casing; a crank means for coupling said output shaft to said arcuately oscillatory blade for reciprocating said arcuately oscillatory blade in an arcuate oscillatory movement with respect to said fixed blade; and means for elastically biasing said arcuately oscillatory blade towards said fixed blade.
3. A device defined in claim 1, wherein a means for controlling or turning air flow is provided in said suction inlet, said fixed blade and said arcuately oscillatory blade are disposed at a position nearer to the forward end of the air passage than said air flow turning means, both of said blades being formed in circular shape and having cutting por-tions at respective inner peripheries.
4. A device defined in claim 1, 2 or 3 wherein said arcuately oscillatory blade is interengaged with a gear mech-anism, said gear mechanism being driven through a flexible wire connected thereto.
5. A device defined in claim 1, 2 or 3 including a suction tube connected to said suction inlet, said suction tube being adjustable in its axial length.
6. A device defined in claim 1, 2 or 3 including a hair cutting gauge, said hair cutting gauge being formed with a head covering body of wall member defining a plurality of openings in a grid pattern, the inner surface of said gauge having a plurality of projections for retaining a given space between said inner surface and a head when the gauge is put on the head, the outer surface of said gauge having a configura-tion corresponding to desired hair length, wherein said hair cutting device is slidably operated along the outer surface of said gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA280,126A CA1059305A (en) | 1977-06-08 | 1977-06-08 | Hair cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA280,126A CA1059305A (en) | 1977-06-08 | 1977-06-08 | Hair cutting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1059305A true CA1059305A (en) | 1979-07-31 |
Family
ID=4108846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA280,126A Expired CA1059305A (en) | 1977-06-08 | 1977-06-08 | Hair cutting device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1059305A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4704794A (en) * | 1985-07-01 | 1987-11-10 | Benoit Paradis | Suction type hair clipper |
-
1977
- 1977-06-08 CA CA280,126A patent/CA1059305A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4704794A (en) * | 1985-07-01 | 1987-11-10 | Benoit Paradis | Suction type hair clipper |
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