GB2130517A - Razors and shaving units for razors - Google Patents

Razors and shaving units for razors Download PDF

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Publication number
GB2130517A
GB2130517A GB08322600A GB8322600A GB2130517A GB 2130517 A GB2130517 A GB 2130517A GB 08322600 A GB08322600 A GB 08322600A GB 8322600 A GB8322600 A GB 8322600A GB 2130517 A GB2130517 A GB 2130517A
Authority
GB
United Kingdom
Prior art keywords
blade
razor
top cap
shaving
edge
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.)
Granted
Application number
GB08322600A
Other versions
GB2130517B (en
GB8322600D0 (en
Inventor
Angus John Mcgready
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.)
Wilkinson Sword Ltd
Original Assignee
Wilkinson Sword Ltd
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 Wilkinson Sword Ltd filed Critical Wilkinson Sword Ltd
Priority to GB08322600A priority Critical patent/GB2130517B/en
Publication of GB8322600D0 publication Critical patent/GB8322600D0/en
Publication of GB2130517A publication Critical patent/GB2130517A/en
Application granted granted Critical
Publication of GB2130517B publication Critical patent/GB2130517B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/40—Details or accessories
    • B26B21/4037—Details or parts covering the blades, e.g. caps for storage; Attachments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/08—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/18—Safety razors with one or more blades arranged transversely to the handle involving blades with two cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/40—Details or accessories
    • B26B21/4062—Actuating members, e.g. switches or control knobs; Adjustments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/40—Details or accessories
    • B26B21/52—Handles, e.g. tiltable, flexible

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)

Abstract

A razor blade assembly which comprises a double-edge blade 313 secured to a blade platform 312, a top cap 311 covering the blade, a handle 310 and guardbars 316. The top cap 311 is slidably movable relative to the blade 313 and blade platform 312 between two shaving positions in which one or other blade edge is exposed, and an intermediate position in which the top cap covers each blade edge to protect the user. A pinion 317, fixed to the handle, engages a rack 319 on the underside of the top cap, so that tilting of the head of the razor relative to the handle moves the top cap from a central blade-covering position to expose one or other blade edge. <IMAGE>

Description

SPECIFICATION Razors and shaving units for razors This invention relates to a razor blade assembly, in the form of a complete razor or a shaving unit for a razor. By 'shaving unit' is meant a blade assembly which can be mounted on or formed integrally with a handle or a razor frame to provide a complete razor. In particular the invention relates to a disposable razor, that is to say one that is intended to be disposed of by the user when he considers that the razor is no longer giving an adequate shave. More particularly, the invention relates to the provision, in such a blade assembly, of means movable to expose the cutting edge of the blade for shaving or to effect relative movement between the blade and another part of the assembly to a position in which the blade cannot harm anyone handling the blade assembly.
According to the present invention there is provided a razor blade assembly comprising a razor blade having a cutting edge, a top cap and a guard bar spaced from the adjacent edge of the top cap to form an opening therebetween, a blade support on which the blade is fixed, the guard bar being fixed relative to the blade support, side members disposed along opposite sides of the blade and an operating member in engagement with the top cap and arranged to swing relative to the side members about an axis which is parallel to said cutting edge of the blade to effect relative movement between the blade and the top cap between a shaving position in which the blade edge is exposed in said opening for shaving and a non-shaving position in which the blade edge is not exposed.
The invention will now be particularly described, by way of example only, with reference to the accompanying drawings in which: Figure 1 is a section through a double edge form of razor in accordance with the invention showing one blade edge in a shaving position; Figure 2 is a view corresponding to that of Fig. 1 but showing both blade edges in a covered or safe position; Figure 3 is a side elevation of the razor of Fig. 1; Figure 4 is an underneath view, part in section, of the razor of Fig. 1, and Figure 5 is an end elevation of the razor of Fig. 1.
In the embodiment of the invention illustrated in Figs. 1-5 the razor contains a dou ble-edged blade 313 and comprises a handle 310 which is pivoted in a blade platform 312 on an axis parallel to the cutting edges of the double-edged blade 313 which is mounted on the platform 312. The blade is preferably secured to the platform by rivets (not shown).
As an alternative to a double-edged blade, two single oppositely-directed blades could be used. As a further alternative, twin blades could be employed. Guardbars 316 are secured to opposite sides of the platform 312.
A top cap 311 is slidably mounted on the platform 31 2 for movement in sliding engagement with the blade along a direction pependicular to the blade cutting edges. For this purpose the top cap is formed integrally with side walls 314, and under-flanges 31 5 which extend from the bottom of the side walls and engage under the platform 312.
At a central position, the underside of the top cap is formed with a rack 31 9 whose teeth engage with the teeth of a pinion 31 7 formed on the adjacent end of the pivotally mounted handle. The arrangement is such that as the handle is moved pivotally relative to the platform, the top cap is caused to slide along the above-mentioned direction perpendicular to the blade edges.
It will be apparent from Fig. 2 that, in the position shown in which the handle 310 is perpendicular to the blade platform 312, the top cap 311 is disposed symmetrically with respect to the blade edges and covers each of these blade edges. This is the "safe" or "travel" position of the top cap.
If, however, the handle is swung clockwise through the position shown in Fig. 1, the inter-engagement of the pinion teeth with the rack teeth causes the top cap to move to the right as shown in Fig. 1 to uncover the left hand blade edge until it is correctly exposed for shaving. Conversely, the handle can be swung in the anti-clockwise direction to cause the top cap to cover the left hand blade edge and expose the right hand blade edge for shaving. In the positions in which one or other blade edge is fully exposed, an edge 318 on the platform will engage against the handle 310 to provide a very positive end stop.
A suitable sprung detent (not shown) is provided on the top cap for engagement in any one of three recesses suitably placed on the blade platform for engagement with the sprung detent to locate the top cap relative to the blade platform in any selected one of the two "shaving" positions and the "safe" position of the blade.
Although the invention has been described in relation to disposable razors, the novel features of the invention reside primarily in the head of the razor and are therefore applicable to a shaving unit.
The expression 'pivotal movement' as used herein is intended to include all forms of rotational movement, whether about a fixed axis or a moving axis.
1. A razor blade assembly comprising a razor blade having a cutting edge,a top cap and a guard bar spaced from the adjacent
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Razors and shaving units for razors This invention relates to a razor blade assembly, in the form of a complete razor or a shaving unit for a razor. By 'shaving unit' is meant a blade assembly which can be mounted on or formed integrally with a handle or a razor frame to provide a complete razor. In particular the invention relates to a disposable razor, that is to say one that is intended to be disposed of by the user when he considers that the razor is no longer giving an adequate shave. More particularly, the invention relates to the provision, in such a blade assembly, of means movable to expose the cutting edge of the blade for shaving or to effect relative movement between the blade and another part of the assembly to a position in which the blade cannot harm anyone handling the blade assembly. According to the present invention there is provided a razor blade assembly comprising a razor blade having a cutting edge, a top cap and a guard bar spaced from the adjacent edge of the top cap to form an opening therebetween, a blade support on which the blade is fixed, the guard bar being fixed relative to the blade support, side members disposed along opposite sides of the blade and an operating member in engagement with the top cap and arranged to swing relative to the side members about an axis which is parallel to said cutting edge of the blade to effect relative movement between the blade and the top cap between a shaving position in which the blade edge is exposed in said opening for shaving and a non-shaving position in which the blade edge is not exposed. The invention will now be particularly described, by way of example only, with reference to the accompanying drawings in which: Figure 1 is a section through a double edge form of razor in accordance with the invention showing one blade edge in a shaving position; Figure 2 is a view corresponding to that of Fig. 1 but showing both blade edges in a covered or safe position; Figure 3 is a side elevation of the razor of Fig. 1; Figure 4 is an underneath view, part in section, of the razor of Fig. 1, and Figure 5 is an end elevation of the razor of Fig. 1. In the embodiment of the invention illustrated in Figs. 1-5 the razor contains a dou ble-edged blade 313 and comprises a handle 310 which is pivoted in a blade platform 312 on an axis parallel to the cutting edges of the double-edged blade 313 which is mounted on the platform 312. The blade is preferably secured to the platform by rivets (not shown). As an alternative to a double-edged blade, two single oppositely-directed blades could be used. As a further alternative, twin blades could be employed. Guardbars 316 are secured to opposite sides of the platform 312. A top cap 311 is slidably mounted on the platform 31 2 for movement in sliding engagement with the blade along a direction pependicular to the blade cutting edges. For this purpose the top cap is formed integrally with side walls 314, and under-flanges 31 5 which extend from the bottom of the side walls and engage under the platform 312. At a central position, the underside of the top cap is formed with a rack 31 9 whose teeth engage with the teeth of a pinion 31 7 formed on the adjacent end of the pivotally mounted handle. The arrangement is such that as the handle is moved pivotally relative to the platform, the top cap is caused to slide along the above-mentioned direction perpendicular to the blade edges. It will be apparent from Fig. 2 that, in the position shown in which the handle 310 is perpendicular to the blade platform 312, the top cap 311 is disposed symmetrically with respect to the blade edges and covers each of these blade edges. This is the "safe" or "travel" position of the top cap. If, however, the handle is swung clockwise through the position shown in Fig. 1, the inter-engagement of the pinion teeth with the rack teeth causes the top cap to move to the right as shown in Fig. 1 to uncover the left hand blade edge until it is correctly exposed for shaving. Conversely, the handle can be swung in the anti-clockwise direction to cause the top cap to cover the left hand blade edge and expose the right hand blade edge for shaving. In the positions in which one or other blade edge is fully exposed, an edge 318 on the platform will engage against the handle 310 to provide a very positive end stop. A suitable sprung detent (not shown) is provided on the top cap for engagement in any one of three recesses suitably placed on the blade platform for engagement with the sprung detent to locate the top cap relative to the blade platform in any selected one of the two "shaving" positions and the "safe" position of the blade. Although the invention has been described in relation to disposable razors, the novel features of the invention reside primarily in the head of the razor and are therefore applicable to a shaving unit. The expression 'pivotal movement' as used herein is intended to include all forms of rotational movement, whether about a fixed axis or a moving axis. CLAIMS
1. A razor blade assembly comprising a razor blade having a cutting edge,a top cap and a guard bar spaced from the adjacent edge of the top cap to form an opening therebetween, a blade support on which the blade is fixed, the guard bar being fixed relative to the blade support, side members disposed along opposite sides of the blade and an operating member in engagement with the top cap and arranged to swing relative to the side members about an axis which is parallel to said cutting edge of the blade to effect relative movement between the blade and the top cap between a shaving position in which the blade edge is exposed in said opening for shaving and a non-shaving position in which the blade edge is not exposed.
2. A razor blade assembly according to claim 1 in which said blade is fixed relative to the side members and the top cap is movable transversely of said axis by the swinging movement of said operating member.
3. A razor blade assembly according to claim 2 wherein the operating member is a pinion and engages a rack formed on said top cap.
4. A razor blade assembly according to any preceding claim having a second cutting edge on the opposite side of said blade to the first mentioned blade-edge and a second guardbar both disposed symmetrically on the opposite side of the said axis to the firstmentioned blade edge and guard bar, the top cap covering both blade edges when in a central position relative to both blade edges and being movable in either direction relative to the blade edges to expose one or other blade edge for shaving.
5. A razor blade assembly according to any preceding claim including a handle on which the operating member is mounted.
6. A razor blade assembly according to claim 5 in which the handle is rigidly secured to the operating member and detents are provided for locking the operating member in a shaving position or in alternative shaving positions in which the blade is tilted relative to the handle,and in a 'non-shaving' position in which the blade is perpendicuiar to the handle.
7. A razor blade assembly substantially as herein described with reference to the accompanying drawings.
GB08322600A 1981-05-19 1983-08-23 Razors and shaving units for razors Expired GB2130517B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08322600A GB2130517B (en) 1981-05-19 1983-08-23 Razors and shaving units for razors

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB8115320 1981-05-19
GB8131071 1981-10-15
GB08322600A GB2130517B (en) 1981-05-19 1983-08-23 Razors and shaving units for razors

Publications (3)

Publication Number Publication Date
GB8322600D0 GB8322600D0 (en) 1983-09-28
GB2130517A true GB2130517A (en) 1984-06-06
GB2130517B GB2130517B (en) 1985-07-31

Family

ID=27261189

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08322600A Expired GB2130517B (en) 1981-05-19 1983-08-23 Razors and shaving units for razors

Country Status (1)

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GB (1) GB2130517B (en)

Also Published As

Publication number Publication date
GB2130517B (en) 1985-07-31
GB8322600D0 (en) 1983-09-28

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Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee