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Патент USA US3040440

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June 26, 1962
H. B. RANDOLPH
3,040,430
SAFETY RAZOR HAVING A VIBRATION DAMPING BLADE MOUNTING MEMBER
Filed Jan. 29, 1959
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United States Patent 0
3,940,430
Patented June 26, 1962
2
1
of the split cover 13 hinge upwardly and outwardly to
3,040,430
a position at which the blade 15 can be replaced; '
SAFETY RAZOR HAVING A VIBRATION DAMPING
BLADE MOUNTING MEMBER
Harry Beckham Randolph, 16 Pall Mall,
London, SW. 1, England
It will be seen that the undersuiface of the blade
mounting member 12 seats on the guard member 11, and
laterally extending tongues 12c forming part of the mem
ber 12 ?t within the turned over edges of‘member 11
which form the guard surfaces 11a, 11a. A part 12f
of the blade supporting member extends upwardly above
the level of rthe tongues 12e into supporting abutment
This invention relates to safety razors for wet shaving.
Although not restricted to such razors, the invention 10 with the cover 12, the outer upright surfaces of the part
Filed Jan. 29, 1959, Ser. No. 789,875
3 Claims. (Cl. 30-41)
is particularly applicable to razors having a head of the
one-piece type in which the cover is split and hinges on
the guard to open outwardly and upwardly for in
sertion or removal of a blade.
I
12f being substantially coplanar with the respective outer
longitudinal edge of the cover. The center line of the
blade mounting member 12 lies above the level of the
guard surfaces 11a, 11a and the upper surface of the
According to the present invention there is provided 15 blade mounting member 12 slopes downwardly in each
a safety razor having a blade mounting member upon
which a blade can be clamped by a cover, said blade
mounting member being of synthetic resin plastic ma
terial and being supported and secured in position by a
metal member which provides the guard or guards for
the razor, the surface of the blade mounting member
direction from the center line towards the guard surface
11a. In this way, the majority of the undersurface of
the blade 15 is in contact with the upper surface of the
blade mounting member 12 when the blade 15 is clamped
by the cover 13 on the mounting member.
I '
,
Two apertures 11b, are provided along each side of
the undersurface of the guard member 11 and cut-out
portions 12a are moulded in the blade mounting member
712 so that the sloped faces thus formed co-operate with
ported substantially only by the mounting member.
The invention also provides a razor 0f the one-piece 25 the opposing edge of the guard member 11 to form
venturi channels through which rinsing water can pass
étype comprising a blade mounting member, a metal
to clean the cutting edges of the blade 15 clamped in the
3 guard member and a split metal cover which hinges
to which a razor blade is clamped being of such an ex
tent that the undersurface of the razor blade is sup
upwardly and outwardly relative to said blade mounting
member to enable a blade to be removed from or placed
gon said blade mounting member, the blade mounting
; member being of synthetic resin plastic material and be
' ing supported by and secured to said guard member, the
extent of the upper face of said blade mounting member
being such that the blade is substantially only supported
by said blade mounting member on the face adjacent
‘ thereto when clamped on the blade mounting member
by closure of said cover.
One construction of safety razor in accordance with
the present invention will now be described, by way of
razor.
The blade mounting member 12 is moulded with a
central hole 12b through which the end of the handle 10
can pass, this hole 12b being formed with an inwardly
extending ?ange 120 over which the end 10a of the
handle 10 is turned to secure the blade mounting member
12 and guard piece 11 in position on a ?ange 10b formed
- integrally with the handle 10. The blade mounting mem
ber 12 is formed with a longitudinal slot 12d which ac
commodates the locating tongue 17.
_
The blade mounting member 12 is formed of a ma
terial of less hardness than metal and which will with
stand water and the maximum temperature to which
the razor may be exposed during normal and reasonable
wings in which:
use. By using a material of appropriate hardness, the vi
FIGURE 1 is a part-sectional end elevation of this
bration of the blade during use is reduced or substantially
construction of safety razor;
eliminated. We prefer to use synthetic resin plastic ma
FIGURE 2 is a side elevation of the razor shown in
terials for the blade mounting member 12, and the ma
45
FIGURE 1; and
terial which we have found most satisfactory for this
FIGURE 3 is a plan view of the blade mounting mem
purpose is nylon. However, other plastic materials such
ber only.
as polyvinyl chloride, polyethylene or synthetic rubber
Referring now to the drawings, it will be seen that
may be used for this purpose. A further advantage of
this particular construction of razor is of the one-piece 50 the construction described and illustrated is that the blade
type comprising a handle 10, a guard member 11, blade
is seated over a larger area than is the case in many
mounting member 12 and spilt cover 13, which latter by
razors of the one-piece type in current use, and that the
rotation of the knob 14 at the lower end of the handle 10
surface of the blade intermediate its clamping locations
adjacent each edge is given additional cushioning or sup
can be moved to open outwards and upwards for in
sertion or removal of a blade 15. The method of e?ect 55 port which reduces vibration of the blade during use and
example only, with reference to the accompanying draw
‘ ing movement of the split cover 13 is well known, and
it is sufficient to say that when the cover 13 is in the
closed position clamping the blade 15 on the mounting
member 12, rotation of the knob 14 in appropriate direc
tion will effect an upward movement of a center rod 16,
due to the threaded engagement of its lower end 16a
with the metal insert 14a of the knob 14, and this up
ward movement of the center rod 16 causes a like dis
placement of a locating tongue 17 whose two side wings
serves to absorb shock.
What I claim is:
-
1. In a safety razor for supporting a double edged
razor, a blade mounting member of vibration damping
synthetic material, a metal cover for clamping 'a blade
on said blade mounting member, said blade mounting
member comprising upper portions which are substan
tially coextensive with said cover and lower portions,
tongues on said lower portions projecting laterally of said
17a, 17a are each pivotally connected at each end re 65 cover along the longitudinal sides of the razor, a thin
metal guard member de?ning a cradle-shaped recess re—
spectively to downwardly extending arms 13a, 13a of
ceiving said blade mounting member therein, longitudi
nal edges of said guard member being wrapped over said
tongues for preventing lateral spreading of the blade
13a’, 13a’ of the cover arms 13a, 13a each engage an
adjacent inward projection 11a’ on a respective one of 70 mounting member, each said upper portion of the blade
mounting member extending laterally into abutment with
the guard surfaces 11a, 11a and as a'result the two parts
the split cover 13. Towards the end of the upward move
ment of the tongue 17, the outwardly directed ?ngers
3,040,430
3
.
a respective longitudinal edge of said guard member and
blade, said blade mounting member resting on the part
of said guard member intermediate said edge portions
and having laterally extending portions which ?t into and
a handle connected to said guard member.
2. In a safety razor for supporting a double edged
razor, a handle, a thin metal guard member having ap
are embraced by the folded over edge portions of said
ertures adjacent opposite blade edges to provide passages
through said member for rinsing each edge of the blade,
guard member and upwardly: extending portions which
extend above said folded over portions and support the
blade over a major part of the area thereof, each said
said guard member being trough shaped in cross-section,
longitudinal edge portions of the guard member being
turned over inwardly, a blade mounting member of vi
bration damping synthetic material rigidly mounted in
upwardly extending portion having a substantially ver
10 tical face, said face abutting a respective folded-over por
said trough and a cover for clamping the blade on said
blade mounting member, said blade mounting member eX
tending laterally to saidturned over portions of the guard
member and upwardly above said turned over portions,
tongues integral withv said blade mounting member ex
tending laterally to ?ll- the space within said turned over
portions to each side of said passages, a substantially up
right surface on each longitudinal side of the blade
mounting member abutting a respective one of said
turned over portions and terminating in the upward di 20
rection in abutment with the blade adjacent its cutting
edge.
3. In a safety razor for supporting a double edge blade,
a blade mounting member of vibration damping synthetic
material, a double edged blade, a metal cover clamping 25
said blade on said blade mounting member, a handle, a
thin metal guard member, means supporting said guard
member on the upper end of said handle, longitudinal
edge portions of said metal guard member being folded
over inwardly to de?ne a cradle shaped recess extending 30
across the full width of the razor, the guard member
over its entire width between the turned over portions
being spaced from the blade cover by a distance equal
4
to the thickness of the blade mounting member and the I _
tion of said guard member and terminating immediately
beneath the blade adjacent its cutting edge.
References Cited in the ?le of this patent
UNITED STATES PATENTS
816,299
1,252,996
1,353,603
1,704,591
1,755,726
Malby ______________ __ Sept. 21, 1920
1,822,379
Scully ______________ __ Sept. 8, 1931
1,864,995
1,894,553
Frost _______________ .__ June 22, 1932
Dudew ______________ __ Ian. 17, 1933
1,991,404
Clauberg ____________ __ Mar. 27, 1906
Bryant _______________ _.. Jan. 8, 1918
Conner ______________ __ Mar. 5, 1929
Conill ______________ __ Apr. 22, 1930
.
Merriman ___________ __ Feb. 19, 1935
1,992,038
2,335,536
Muros ______________ __ Feb. 19, 1935
Reynolds ___________ __ Nov. 30, 1943
2,465,924
2,698,995
2,803,874
2,848,807
2,898,676
Pross ___________ _'____ Mar. 29,
Anastasia ____________ __ Jan. 11,
Obolensky __________ __ Aug. 27,
Shnitzlér et a1. ______ __ Aug. 26,
Guardino ____________ __ Aug, 11,
1949
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1958
1959
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