CA1120248A - Shaving apparatus - Google Patents
Shaving apparatusInfo
- Publication number
- CA1120248A CA1120248A CA000324613A CA324613A CA1120248A CA 1120248 A CA1120248 A CA 1120248A CA 000324613 A CA000324613 A CA 000324613A CA 324613 A CA324613 A CA 324613A CA 1120248 A CA1120248 A CA 1120248A
- Authority
- CA
- Canada
- Prior art keywords
- cartridge
- yoke
- handle
- hooks
- blade
- 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
Links
Abstract
IMPROVEMENTS IN SHAVING APPARTUS
ABSTRACT
A razor has a handle holding a pair of double edged blades held in a carriage member by means of a spring yoke with cartridge engaging hooks on each arm of the yoke. Dimple bearings or. each side of the blade cartridge hold the yoke hooks in engagement with the cartridge .
The yoke bears against a lip of the handle end by a push rod integrally formed with the yoke. The push rod moves the yoke forward in the razor handle by means of a tooth and ratchet means on the handle.. A force push on the rod spreads the hooks.
to release the cartridge. Loading of the razor with a blade cartr-idge is is effected by pushing the handle onto a cartridge which will spread the hooks over the dimples and the force push on the rod releases the tooth and ratchet in the handle to allow the hooks to spring into gripping position about the cartridge.
ABSTRACT
A razor has a handle holding a pair of double edged blades held in a carriage member by means of a spring yoke with cartridge engaging hooks on each arm of the yoke. Dimple bearings or. each side of the blade cartridge hold the yoke hooks in engagement with the cartridge .
The yoke bears against a lip of the handle end by a push rod integrally formed with the yoke. The push rod moves the yoke forward in the razor handle by means of a tooth and ratchet means on the handle.. A force push on the rod spreads the hooks.
to release the cartridge. Loading of the razor with a blade cartr-idge is is effected by pushing the handle onto a cartridge which will spread the hooks over the dimples and the force push on the rod releases the tooth and ratchet in the handle to allow the hooks to spring into gripping position about the cartridge.
Description
IMPROVEMENTS IN SH~VING APPARATUS
BACKGROUND OF THE INVENTION
FIEL~ OF THE INVENTION
The present invention relates to razors for the shaving of human hair and more particularly relates to improvements in the handle means employed to hol-l a shaving blade element or cartridge. The invention includes novel means for picking ul~ and releasing and reversing a blade cartridge member.
PRIOR ART
It is known in wet shaving apparatus, to retain the disposable blade member between a pair of guard plates that are threadably affixed to a handle. Shaving devices of the above simple type are being continually changed with a view to preventing a sh~ver from cutting himself. A recent development is the simple enclosing of the blade in a disposable cartridge to elimina-te the necessity of the shaver having to touch the blade.
A further improvement is the provision of loading and ejector means in the handle to prevent the user from even the chance or need to touch the -~
cartridge itself.
The most recent development in safety razors includes a cam means in the handle assembly to create a biasing force against the blade cartridge or vice-versa in the expectation that the blade cartridge will follow the contour of the surface being shaved. The disadvantage of the latter development is the large number of o~dly shaped parts which require manufacture and assembly together to make the moveable part. ~ -Simultaneous with the latter moveable shaving cartridge is the development and marketing of completely disposable shaving assemblies i.e. handle and cartridge and all. The disadvantage of the disposable shavers is that they use a pair of single edged blades only rather than double edged blades.
SUI~MARY OF T~E INVENTION
The object of the present inven-tion is -to provide a ra~or for wet shaving facial hair and the like, comprising a blade holding car~ridge having pairs of cutting edges on either side of parallel sides of the cartridge thereby to give double working life to the cartridge, and wherein the cartridge holding handle means has a spring yoke member disposed to hold the cartridge in moveable relation therewi-th whereby the cartridge can be picked up, reversed and released by ac-tua-tion of a push rod member connected with the yoke and actuated by pressure of an opera-tors finger on a knob provided on the end of the push rod where it protrudes from an aperature in the handle.
THE DRAWINGS
The above objects are shown in the accompanying drawings of a preferred embod-iment of the invention where like reference numerals refer to like parts throughout the several viewsdiscussed below.
Figure 1, is a bottom view of the assembly as held in a shavers hand showing the yoke sprung into a cavity in the end of the handle showing the itegrally formed push rod slidable in an aperature in the handle.
Figure 2, is a side elevation ~iew of the handle showing a double-edged pair of blades enclosed in a cart~idge which is held by the yoke to the handle.
Figure 3, is an enlarged view of the centre part of the handle proximate the yoke showing the slot or aperature in the handle for receiving the push rod and the tooth and slot or ratcet means of holding the rod in either one of two fixed positions to the handle.
Figure 4, is a perspective view of the yoke and the push rod with a pair of double edged blades enclosed in a cartridge and shown exploded from the ends of the yokes.
z~
The Preferred Embodiment Of The Invention And Mode Of Operation _ The novel razor assembly discussed herein is clesignated numeral 10 in the drawing and comprises a handle member 12 with a generally upturned end portion 14. The end portion 14 of the handle shown in plan view of figure 1 is enlarged or splayed out as indicated to provide a cavity or spoon portion 15 to receive a yoke member 16.
The yoke 16 is integrally preformed together with a push rod 17 and the assembly 16 and 17 is fitted into the handle caviky 15 with the push rod 17 interfitted to an aperture 18 in the handle 12.
The push rod 17 is held to the handle within aperture 18 adjacent a bend in the handle by means of a tooth 13 on the push rod 17. Tooth 13 co-operates with one of slots 19, 50, 51, 52, 29, formed on the inside of the wall of aperture 18 to create a ratchet for tooth 13.
A finger engaging knob 20 protrudes from the upper side of the handle 17 as shown in figure 2, and allows a shaver to push the tooth 13 into engagement with ratchet slot 19 thereby forcing the yoke up against the handle end 44.
The yoke 16 consists of a pair of springable arms 22,24 each having upward disposed end members 25,26. Each of ends 25,26, forms a hook-shaped pivot end 27,28 as shown in figure 4. When the yoke is pushed by rod 17, against thw end plate 21 of handle cavity 15, the arms 22, 24, will spring outwardly to spread apart the hooks 27,28, to thereby release the blade cartridge.
The blade cartridge 30 encloses a pair of double edged blades 31,32, in spaced apart parallel relationship. .:
A depression or dimple 35 is formed at the mid point of each end 37, 38, of the cartridge 30. The cartridge 30, is moveably attached to the yoke 16 by the pivot action provided by the hooks 27,28 in the dimple bearings 35.
In order to assemble the cartridge onto the yoke the handle face end plate 44 is placed over the cartridge allowing hooks 27,28 to come into engagement with the bearings 35, when the tooth 13 of push rod ',. ' , :';
17 is in the 19 slot. With -the hooks 27,28 spaced apart adjacent the bearings`35 of cartridge 30, a gentle push of the handle in the direc-tion of the end face plate 44 against the cartridge while the assembly is held against a firm surface will release the arms 22,24, and cause the push rod 17 to travel into the aperture 18 and release tooth 13 from slot 19. When the hooks 27,28 seat into the bearings 35 of cart-ridge 30 the tooth 13 will be seated and held in slot in slot 29 with the cartridge firmly contacting the handle end 44, to provide a firm rigid assembly as in the usual known shaving apparatus.
To prevent the yoke arms 22,24, from popping upwards out of the cavity 15 in the handle 14, when they are sprung outwards by the force of the end plate 44 against the end of push rod 17, a lip 40, divided as shown to admit the rod 17, i5 formed to partially overlie the yoke arms when engaged by the end 44.
An upwardly standing wall 21 is also formed on the outer edges of the handle cavity 15 to assist in retaining the yokes in engaging relation with the cartridge when it is desired to convert the razor from a rigid assembly to one having a floating cartridge shaving means. ~n figure 1, the cartridge 30 is shown in close contact with the handle end to prevent the cartridge from moving on the pivots 27,28. In fig-ure 2 a space will be seen between cartridge 30 and the handle end 14 and is in the free floating mode.
To achieve the free floating mode for the razor, the operator will merely push knob 20 to cause the tooth 13 to re-seat from slot 29, to slot 51, 50, or 52. Only when the rod 17 is pushed to allow tooth 13 to seat in slot 19, will the yokes spread sufficiently to release the cartridge 30, as rod 17 does not strike end 44 until tooth 13 arrives at 19 and beyond towards the forepart of the assembly. The wall 21 acts in the floating position to prevent the ends from disengaging prematurely and causes the forward distortion of the yokes to be contained by their own ability to flex and distort throughout their l)2~1~
length. The square cross-section oE the yokes can also assist in maintaining a good contact to the end 44 as he]d by lip 40.
Sharp shoulders 47,48 are provided to the end 38 of the cartridge 30 adjacent the dimple 35 where the pins 27,28 of the yoke ends pivot in the cartridge to insure that the rectangular shaped arm ends of the yoke 25,26, will bind and cause the cartridge to seek a free position of free float as shown in figure 2.
: . .
BACKGROUND OF THE INVENTION
FIEL~ OF THE INVENTION
The present invention relates to razors for the shaving of human hair and more particularly relates to improvements in the handle means employed to hol-l a shaving blade element or cartridge. The invention includes novel means for picking ul~ and releasing and reversing a blade cartridge member.
PRIOR ART
It is known in wet shaving apparatus, to retain the disposable blade member between a pair of guard plates that are threadably affixed to a handle. Shaving devices of the above simple type are being continually changed with a view to preventing a sh~ver from cutting himself. A recent development is the simple enclosing of the blade in a disposable cartridge to elimina-te the necessity of the shaver having to touch the blade.
A further improvement is the provision of loading and ejector means in the handle to prevent the user from even the chance or need to touch the -~
cartridge itself.
The most recent development in safety razors includes a cam means in the handle assembly to create a biasing force against the blade cartridge or vice-versa in the expectation that the blade cartridge will follow the contour of the surface being shaved. The disadvantage of the latter development is the large number of o~dly shaped parts which require manufacture and assembly together to make the moveable part. ~ -Simultaneous with the latter moveable shaving cartridge is the development and marketing of completely disposable shaving assemblies i.e. handle and cartridge and all. The disadvantage of the disposable shavers is that they use a pair of single edged blades only rather than double edged blades.
SUI~MARY OF T~E INVENTION
The object of the present inven-tion is -to provide a ra~or for wet shaving facial hair and the like, comprising a blade holding car~ridge having pairs of cutting edges on either side of parallel sides of the cartridge thereby to give double working life to the cartridge, and wherein the cartridge holding handle means has a spring yoke member disposed to hold the cartridge in moveable relation therewi-th whereby the cartridge can be picked up, reversed and released by ac-tua-tion of a push rod member connected with the yoke and actuated by pressure of an opera-tors finger on a knob provided on the end of the push rod where it protrudes from an aperature in the handle.
THE DRAWINGS
The above objects are shown in the accompanying drawings of a preferred embod-iment of the invention where like reference numerals refer to like parts throughout the several viewsdiscussed below.
Figure 1, is a bottom view of the assembly as held in a shavers hand showing the yoke sprung into a cavity in the end of the handle showing the itegrally formed push rod slidable in an aperature in the handle.
Figure 2, is a side elevation ~iew of the handle showing a double-edged pair of blades enclosed in a cart~idge which is held by the yoke to the handle.
Figure 3, is an enlarged view of the centre part of the handle proximate the yoke showing the slot or aperature in the handle for receiving the push rod and the tooth and slot or ratcet means of holding the rod in either one of two fixed positions to the handle.
Figure 4, is a perspective view of the yoke and the push rod with a pair of double edged blades enclosed in a cartridge and shown exploded from the ends of the yokes.
z~
The Preferred Embodiment Of The Invention And Mode Of Operation _ The novel razor assembly discussed herein is clesignated numeral 10 in the drawing and comprises a handle member 12 with a generally upturned end portion 14. The end portion 14 of the handle shown in plan view of figure 1 is enlarged or splayed out as indicated to provide a cavity or spoon portion 15 to receive a yoke member 16.
The yoke 16 is integrally preformed together with a push rod 17 and the assembly 16 and 17 is fitted into the handle caviky 15 with the push rod 17 interfitted to an aperture 18 in the handle 12.
The push rod 17 is held to the handle within aperture 18 adjacent a bend in the handle by means of a tooth 13 on the push rod 17. Tooth 13 co-operates with one of slots 19, 50, 51, 52, 29, formed on the inside of the wall of aperture 18 to create a ratchet for tooth 13.
A finger engaging knob 20 protrudes from the upper side of the handle 17 as shown in figure 2, and allows a shaver to push the tooth 13 into engagement with ratchet slot 19 thereby forcing the yoke up against the handle end 44.
The yoke 16 consists of a pair of springable arms 22,24 each having upward disposed end members 25,26. Each of ends 25,26, forms a hook-shaped pivot end 27,28 as shown in figure 4. When the yoke is pushed by rod 17, against thw end plate 21 of handle cavity 15, the arms 22, 24, will spring outwardly to spread apart the hooks 27,28, to thereby release the blade cartridge.
The blade cartridge 30 encloses a pair of double edged blades 31,32, in spaced apart parallel relationship. .:
A depression or dimple 35 is formed at the mid point of each end 37, 38, of the cartridge 30. The cartridge 30, is moveably attached to the yoke 16 by the pivot action provided by the hooks 27,28 in the dimple bearings 35.
In order to assemble the cartridge onto the yoke the handle face end plate 44 is placed over the cartridge allowing hooks 27,28 to come into engagement with the bearings 35, when the tooth 13 of push rod ',. ' , :';
17 is in the 19 slot. With -the hooks 27,28 spaced apart adjacent the bearings`35 of cartridge 30, a gentle push of the handle in the direc-tion of the end face plate 44 against the cartridge while the assembly is held against a firm surface will release the arms 22,24, and cause the push rod 17 to travel into the aperture 18 and release tooth 13 from slot 19. When the hooks 27,28 seat into the bearings 35 of cart-ridge 30 the tooth 13 will be seated and held in slot in slot 29 with the cartridge firmly contacting the handle end 44, to provide a firm rigid assembly as in the usual known shaving apparatus.
To prevent the yoke arms 22,24, from popping upwards out of the cavity 15 in the handle 14, when they are sprung outwards by the force of the end plate 44 against the end of push rod 17, a lip 40, divided as shown to admit the rod 17, i5 formed to partially overlie the yoke arms when engaged by the end 44.
An upwardly standing wall 21 is also formed on the outer edges of the handle cavity 15 to assist in retaining the yokes in engaging relation with the cartridge when it is desired to convert the razor from a rigid assembly to one having a floating cartridge shaving means. ~n figure 1, the cartridge 30 is shown in close contact with the handle end to prevent the cartridge from moving on the pivots 27,28. In fig-ure 2 a space will be seen between cartridge 30 and the handle end 14 and is in the free floating mode.
To achieve the free floating mode for the razor, the operator will merely push knob 20 to cause the tooth 13 to re-seat from slot 29, to slot 51, 50, or 52. Only when the rod 17 is pushed to allow tooth 13 to seat in slot 19, will the yokes spread sufficiently to release the cartridge 30, as rod 17 does not strike end 44 until tooth 13 arrives at 19 and beyond towards the forepart of the assembly. The wall 21 acts in the floating position to prevent the ends from disengaging prematurely and causes the forward distortion of the yokes to be contained by their own ability to flex and distort throughout their l)2~1~
length. The square cross-section oE the yokes can also assist in maintaining a good contact to the end 44 as he]d by lip 40.
Sharp shoulders 47,48 are provided to the end 38 of the cartridge 30 adjacent the dimple 35 where the pins 27,28 of the yoke ends pivot in the cartridge to insure that the rectangular shaped arm ends of the yoke 25,26, will bind and cause the cartridge to seek a free position of free float as shown in figure 2.
: . .
Claims (2)
1. A razor assembly comprising in combination;
a handle member having an upturned lip-stop portion with a cavity formed therein;
a double edged pair of parallely spaced apart blade members enclosed in a cartridge means exposing the blades for use therefrom and having a pair of oppositely spaced sides thereto;
bearing means formed mid-way of each side of said cartridge;
a Y-shaped spring yoke member adjustably situate within said cavity in said handle;
each arm of said yoke having inwardly facing hooks thereon adapted to mate with the bearings of said cartridge when the yoke arms are sprung outwardly by the pressing of the yoke arms against the lip-stop of the handle end;
a push rod member integrally formed with the leg of said yoke and reciprocally moveable within a slot in said cavity toward said lip-stop;
tooth and ratchet means associated with said handle and said push rod and adapted to maintain said yoke in spread apart posture wile an operator-shaver releases said blade cartridge from said hooks and to maintain when in a second of two positions to maintain and allow said yoke to spring closed when the pressure of the handle end against a cartridge held against a rigid surface is inserted into the hooks of said yoke.
a handle member having an upturned lip-stop portion with a cavity formed therein;
a double edged pair of parallely spaced apart blade members enclosed in a cartridge means exposing the blades for use therefrom and having a pair of oppositely spaced sides thereto;
bearing means formed mid-way of each side of said cartridge;
a Y-shaped spring yoke member adjustably situate within said cavity in said handle;
each arm of said yoke having inwardly facing hooks thereon adapted to mate with the bearings of said cartridge when the yoke arms are sprung outwardly by the pressing of the yoke arms against the lip-stop of the handle end;
a push rod member integrally formed with the leg of said yoke and reciprocally moveable within a slot in said cavity toward said lip-stop;
tooth and ratchet means associated with said handle and said push rod and adapted to maintain said yoke in spread apart posture wile an operator-shaver releases said blade cartridge from said hooks and to maintain when in a second of two positions to maintain and allow said yoke to spring closed when the pressure of the handle end against a cartridge held against a rigid surface is inserted into the hooks of said yoke.
2. A razor assembly as claimed in claim 1 wherein said handle has a protuberance on its end to protect the pair of blade edges facing outward and to alow the cartridge to float or rotate only within a limited circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000324613A CA1120248A (en) | 1979-04-02 | 1979-04-02 | Shaving apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000324613A CA1120248A (en) | 1979-04-02 | 1979-04-02 | Shaving apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1120248A true CA1120248A (en) | 1982-03-23 |
Family
ID=4113890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000324613A Expired CA1120248A (en) | 1979-04-02 | 1979-04-02 | Shaving apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1120248A (en) |
-
1979
- 1979-04-02 CA CA000324613A patent/CA1120248A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |