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Патент USA US2061445

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Patented Nov. 17, 1936
UNETED STATES
2,061,445
SAFETY RAZOR
Charles L. Willcox, Atlanta, Ga.
Application March 21, 1935, Serial No. 12,220
1 Claim.
(Cl. 30---65)r
This invention relates to improvements in` safe
ty razors and particularly to a type employing a
ilat blade with double cutting edges, the inven
tion being directed to both the holder and the
5 blade, the holder susceptible for use with the
commercial thin flexible double edged blades,
the improved blade, however, permitting its re
placement from the holder without dismantling
the holder.
An object of the invention is to provide a razor
10:
blade holder having opposed plates for receiv
ing and holding a ilat razor blade therebetween
and sustaining its cutting edges in parallelism
15
with the guarding edges‘of a guard plate.
Another object of the invention is to provide
a razor blade holder in which the blade is secured
between opposed plates adjustable as a unit
toward and from a guard plate, whereby the
blade, opposed and guard plates may be moved
relatively to each other to separate the parts for
20
the purpose of cleansing without requiring the
blade to be removedfrom the holder.
Another object of the invention is to provide
a razor blade holder with opposed plates for
receiving and holding a double edged i‘lat blade
25
therebetween, and adjustable as a unit toward
and from a concaved face of a guard plate and
against a flat spring interposed between the op
posed plates and concaved face of the guard plate
for tensioning the spring to compress the opposed
30
plates together and regulatably position the cut
ting edges of the blade in parallelism with the
guarding edges of the guard plate for either
coarse or fine shaving.
35
v
Various other features and advantages of the
invention will be more fully set forth in the de
scription of the accompanying drawing, in which:
Figure l is a perspective view of the holder with
the parts in separatedfposition for blade replace
40 ment.
Figure 2 is a side elevation of the holder ready
for use.
Figure' 3 is an end view thereof.
Figure 4 is a section on line 4_4, Figure 2,
showing the clamp assembly with an interposed
45 blade adjusted against a spring and guard plate
in one limit of adjustment.
Figure 5 is a section on lineä-ii, Figure 2.
Figure 6 is a sectionon line 6_6, Figure 2.
Figure '7 is a sectional View similar to Figure 6
50 but taken below the plane of clamp assembly in
order to show the spring.
Figure 8 is a plan view of the improved blade.
Referring to the drawing, l indicates a handle
having a guard plate extending cross-wise of one
end thereof, as a T-head integral therewith or
permanently ñxed thereto. The guard plate 2, is
of curved or arcuate form in cross section, the arc
inverted to curve toward the handle, providing
a channel in its outer face longitudinally thereof.
Thelongitudinal opposite edges of the guard plate
2 are provided with outstanding guard teeth 3.
The handle I! is of hollow or counterbored tubu
lar construction for thereception of a steril or elon
gated `stud 4 integral with and centrally trans 10
versely extending from the lower side of an outer
clamping plate 5. The extremity of the stem or
stud is screwthreaded for coaction with an in
ternally threaded sleeve nut or adjuster ii, telem
scopically and rotatatively engaged within` the 15
outer end of the hollow handle, whereupon rotat
ing the sleeve nut or adjuster 6 the stem with its
outer clamping plate 5, as a unit, may be ad-
justed in appropriate directions for either clamp
ing or releasing a double edged razor blade l, 20v
interposed between the clamping plate 5 and a
lower or second clamping plate 8. The tight
ening of the clamping plates 5 and 8 draws the
clamping plates and razor blade toward the guard
plate 2 for rigidly securing the parts of the holder 25
assembly together.
The sleeve nut or adjuster 5 is provided with a
knurled head 9 external of the outer end of the
handle as a iinger hold for rotating the sleeve
nut. The head 9 abuts the end of the handle 30
which is flanged or spun inwardly into an annular
groove in the periphery of the sleeve nut to c0n~
fine the sleeve _nut against longitudinal displace- ‘
ment.
ì
The stem 4 of the outer clamping plate 5 trav
erses the lower clamping plate ß through a cen
tral aperture therethrough, and the lower side
of the lower clamping plate4 8 has a rib lll cen
trally longitudinally thereof for bearing upon a
spring plate or leafll interposed between the 40.
lower clamping plate 8 and the channel side of
the guard plate 2. The channel in the guard
plate 2, in tightening the parts of the assembly,
allows the spring plate or leaf Il to be trans
versely flexed into the channel.
45
-
For clamping the razor blade, the sleeve nut 6
is rotated in an appropriate direction for drawing
the stem fi and clamp assembly toward the guard
plate E!y against the spring plate il, stressing the
same for imparting a pressure to bind the clamp
ing plates and blade together. Normally the ad
justment is to such a degree as will bring all of
the parts in rigid contact with one another and
provide a minimum space between the cutting 55
2
2,061,445
edges of the blade and teeth of the guard plate,
as shown in Figure 5, whereupon the holder is
ready for use. With the parts in their fully
clamped position the holder is used for going
jecting the same to the spray of water from a
nozzle or faucet and thereafter shaking the holder
to remove the moisture.
over the face the first time. For a subsequent
going over or closer shaving, the sleeve nut is
unscrewed a half turn or more, allowing the blade
holder permits a commercial blade to be engaged
over a pair of studs I2, I2 protruding from the
upper or face side of the lower clamping plate 8,
which register and respectively engage through
to recede slightly from the toothed edges of the
guard plate 2 but without loosening the clamping
bind upon the blade, which is maintained by the
pressure of the spring plate II. This furnishes
Removing the outer clamping plate 5 from the
correspondingly located apertures I3, I3 in the
outer clamping plate 5. The stem 4 is engaged 10
through the central aperture in the blade and a
a greater degree of blade freedom from the guard
corresponding aperture in the lower clampingr
teeth and for a movement of the blade at a more
varied degree of angle over the face than is pos
plate 8, and thence connected with the sleeve
sible under the minimum spacing of the blade
edges from the guard teeth.
In shaving for the ñrst going over of the face
with the clamping assembly firmly or fully
clamped, the holder is held at substantially the
same angle as in the use of all safety razors, ap
proximately bringing the blade to an angle of 45°.
Under no circumstances should the blade assem
bly be held perpendicular or flat against the face.
25 The angle at which the razor is held and the dis
tance between the cutting edges of the blade and
the toothed edges of the guard plate are impor
tant factors toward producing the best results.
The individual can easily determine the most
30 suitable adjustments for his requirements.
The spring plate II extending or coinciding
with the length of the clamping plates and when
slightly flexed crosswise exerts ample pressure
35 upon the clamping plates and blade to prevent
any tilting or Vibratory action of the blade and
a very eirective range of blade adjustment toward
and from the toothed edges of the guard plate
is obtained, and ample to meet all requirements.
The blade under any degree o-f shaving adjust
40
ment is always securely bound between the clamp
ing plates, leaving no opportunity for individual
ñexing of the blade between the clamping plates,
as in the case of the commercial razor blade hold
45 ers wherein the blade is clamped between a clamp
ing plate or member and the guard plate, requir
ing the parts to be ñrmly clamped together to
sustain the blade stable.
In the holder of the present invention the blade
50 is clamped in a horizontal plane, there is no bow
ing of the blade, and its plane is not disturbed for
its various shaving adjustments. In the com
mercial razor blade holders wherein the blade is
bowed in clamping, it is necessary to tighten the
55 parts to their full limit, otherwise the blade is
not secure for shaving.
The holder is adaptable for the commercial
double edged wafer type of blades, usually con
taining three aligned apertures or an elongated
60 slot of peculiar configuration longitudinally of
the blade to be fitted and engaged over a plurality
of studs carried by one or both of the clamping
elements, for sustaining the blade and clamping
elements
in relative alignment and registration.
65
To insert such standard types of commercial
blades within the holder it is necessary to com
pletely unfasten and remove the outer clamping
plate 5 from the holder to allow its stem to be
engaged through the blade.
This, however, is
only necessary for blade replacement, as ordi
narily after use of the razor the clamp assembly
is loosened sufliciently to fully reflex the spring
plate II, to preserve its resiliency and which will
75 amply suilice for cleansing the part as by sub
nut 6 and the parts tightened as heretofore de
scribed.
15
I
To automatically open and close the clamping
elements and to non-rotatively sustain the stem
4 and its clamping plate 5 upon the holder or
within the handle thereof and to maintain true 20
alignment between the two sections of this detail
under extreme open adjustments, the stem is
provided with a longitudinal key way I4 for re
ceiving a key ñxed within the lower clamp plate.
'I‘he assembly, as described, responds to the ac 25
tion of the adjuster 5 to alternately and automat
ically adjust the cutting edges of the blade in
their relation to the edges of the guard plate and
also open and close the clamp plates for the re
ception and removal of the blade.
30
The necessity of disassembling the clamping
elements for blade replacement can be avoided by
the employment of a specific type of blade, as
illustrated in Figure 8. The blade is of the double
edged wafer type, but as it is not flexed in clamp 35
ing can be of a heavier gauge metal, giving it
more body and added durability. It is provided
with a single aperture I5 to engage over one of
the studs I2 of the lower clamping plate 8 and
an elongated slot I6 open to an outer edge of the 40
blade. The elongated slot receives the stem 4
of the outer clamping plate 5 and the second stud
I2 of the lower clamping plate 8, and permits of
sidewise insertion or withdrawal of the blade from
the stem 4 without removal of the stem and cap
plate from the device. The clamping assembly
need only be loosened enough for the studs to
clear the outer clamping or cap plate 5 for a
passage of the blade therebetween, as illustrated 50
in Figure 1.
The lower clamping plate 8 is sustained in
longitudinal alignment and registration with the
guard plate by a pair of studsA I'I, I‘I, extending
laterally from the lower side of the lower clamp 55
ing plate for engagement through a correspond
ingly located set of apertures in the spring plate
and guard plate andprotrude from the lower
side of the guard plate. The studs I1, I‘I respec
tively are each headed by a screw I8, which pre 60
vents displacement of the lower clamping plate
from the guard plate by restricting its motion
to the necessary play for a full reflex adjustment
of the spring plate.
This materially facilitates
and expedites the general use of the holder in 65
blade replacement with convenience and dispatch.
The blade being firmly clamped between a pair
of rigid clamping plates, held together as a unit
under the pressure of the spring plate for the
range of adjustment for varying the spacing be 70
tween the cutting `edges and guarding edges, the
cutting edges are always maintained in parallel
ism with the guarding edges of the guard plate
for a uniform performance for the full length 75
2,061,445
of the cutting edge. Adjusting the blade cutting
edge from the guarding edge provides for more
exposure of the cutting edge for closer shaving,
eliminating the necessity of forcibly applying the
guarding edge against the skin, to bring the cut
ting edge into greater intimacy with the skin
and unless properly guarded one is apt to cut
the skin. The advantage is to apply the razor
to the skin with the least pressure possible, so as
10 not to destroy the utility of the guarding edge,
relying on the keenness of the cutting edge to
cut the hair under a sliding stroke or movement
and the weight of the holder bearing the guard
ing edge against the skin, while the user only
15 draws the holder over the skin and presents the
blade at an appropriate angle.
Having describe-d my invention, I claim:
A safety razor comprising a holder, the holder
3
between and in longitudinal registration With the
guard plate, a razor blade removably disposed
between said clamping plates, a spring plate lon
gitudinally interposed between said clamp-ing
plates as a unit and concaved side of said guard
plate, the inner of said clamping plates having
a pair of aligned studs extending laterally from
one side thereof, respectively projecting through
apertures in said blade and outer clamping plate,
and a central longitudinal rib and pair of aligned 10
studs extending from its opposite side, the rib
in contact with the spring and the studs engag
ing respectively through apertures in said spring
and guard plate, and means carried by the handle
connecting with one of the clamping plates for
urging said clamping plates, razor blade and
15
spring plate unitarily toward the guard plate
for rigidly binding the parts together and for
regulating the spacing between the cutting edges
constituting a handle and guard plate, the guard
o-f the razor blade and guarding edges of the guard 20
plate, and for automatically opening and closing
of the handle and concaved longitudinally, a pair
of opposing clamping plates, as an outer and
inner, interveningly clamping a razor blade there
the clamping elements for the reception or re
moval oi’ the blade.
20 plate extending centrally transversely of one end
CHARLES L. WILLCOX.
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