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Патент USA US2114919

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April 19, 1938.
Filed July 27, 1956
BY whyawmié;
1 :
Patented Apr. 19, 1938
Grif?th Evans, Detroit, Mich.
Application July 27, 1936, Serial No._,92,896
2 Claims.
This invention relates to razor blade sharpen
ers and its general object is to provide a sharp
ener that is primarily designed for use on safe
ty razor blades to produce a sharp, smooth, keen,
cutting edge therefor, in an easy and expeditious
A further object of the invention is to provide
a safety razor blade sharpener by which a plu
rality of blades can be sharpened simultaneously
10 and the blades can be applied and removed with
respect thereto, with minimum effort, yet casual
removal or displacement is practically impossible.
Another object of the invention'is to provide a
safety razor blade sharpener, that includes a con
15 tainer for holding liquid and the inner surface of
the wall thereof acts as thesharpening medium,
to receive the blades which are held and rotated
against the same, with the result the blades are
sharpened within the liquid which of coursepre
20 vents detrimental heat caused by friction.
A further object of the invention is to provide a
safety razor blade sharpener that is simple in
construction, inexpensive to manufacture and
extremely efficient in operation, use and service.
This invention also consists in certain other
features of construction'and in the combination
and arrangement of the several parts, to, be here
inafter fully described, illustrated in the accom
panying drawing and speci?cally pointed out in
(m; 51-161) '
shown, to provide a ‘leak proof connection be
tween the body and bottom.
The housing likewise includes a cap 3 having
an, annular, flange 4 ‘depending from the top
thereof, ‘and cemented or otherwise ?xed about
the upper end of the body I is a band 5 which
receives the ?ange 4 for fitting association there
with, while disposed between the upper edge of
the body I and the top of the cap 3 is a gasket 6,
to provide a leak proof connection, the gasket
having an inner shoulder for cooperation with
the ?ange 4, for removably securing the cap in
closed position.
, Formed on, or otherwise secured to the cap 3
and rising therefrom isan inverted substantially 15
U-shaped frame 1 having a bearing mounted
in the bight portion thereof, within which is ro
tatably mounted a stub'shaft 8 that extends into
‘the housing, through an opening in the top of
the cap, asshown in Figure 1, and the inner end
of the shaft 8 is provided with square corners for 20
a purpose which will be presently described.
The blade holding and rotating means of my
sharpener includes'a sleeve shaft 9 having a
socket in the upper end thereof to ?ttingly re
ceive the square cornered end of the stub shaft
8, and the 'socketed end of the sleeve shaft 9 is
mounted for rotation in a collar l0 secured to and
30 the appended claims.
depending centrally from the top of the cap. The
lower end of the shaft?! is mounted for rotation
In describing the invention in detail, reference
will be had to the accompanying drawing wherein
like characters denote like or corresponding parts
throughout the several views, and in which:
Figure 1 is a vertical sectional view taken
through the sharpener which forms the subject
matter of the present invention.
ing collar for the lower end of the shaft 9, and
also a threaded portion I2 that is threadedly
mounted within and centrally of the bottom 2.
Secured to the sleeve shaft 9 adjacent to the
upper and lower ends thereof, is a pair of collars
[3 having threaded bores to receive the threaded
Figure 2 is a horizontal sectional view taken
at various planes through the sharpener, with
40 parts in elevation.
Figure 3 is a side elevation of the sharpener
with parts broken away.
Figure 4 is a sectional view taken approximate
ly on line 4-4 of Figure 2, looking in the direction
45 of the arrows.
Figure 5 is a fragmentary detail view illustrat
ing a portion of the blade securing means.
Referring to the drawing in detail, it will be
noted that my blade sharpener in the form as
50 shown includes a housing in the form of a con
tainer that is provided with a cylindrical body I
formed from glass, and a bottom 2 having an an
nular groove disposed adjacent to the periphery
thereof to receive the lower end of the body I,
55 and the lower end is cemented in the groove, as
on the shank H of a stud that includes a bear
inner ends of screw pins M in a manner whereby
the latter radiate from the sleeve shaft 9, as
best shown in Figure 2. These screw pins are 40
provided with heads on the outer edge thereof,
and mounted for slidable movement on each pair
of superimposed screw pins is a blade receiving
plate l5 which is shown as being of elongated rec
tangular formation, and the plates I?) are urged 45
and held on the outer ends of the screw pins M
by coil springs [6 which surround the pins, as
In order to secure the blades to the plates l 5, I 0
provide what may be termed latch means that in
cludes stationary keeper members I‘! that are
?xed to the lower ends of the plates l5 and in
clude upwardly directed ears I8 spaced from the
plates to receive one of the ends of the blades be 55
tween the plates and ears, as best shown in Fig
ure 3. Rotatably mounted at the upper ends of
the plates are movable keeper members l9 that
likewise are provided with ears 2!] spaced from
the plates to receive the upper ends of the blades,
and the keeper members l9 have secured thereto
handles 2| at the inner ends thereof, with the
duces friction and eliminates heat caused there
While I have shown and described a crank
handle for manually operating the sharpener, it
parent. The keeper members are preferably in
the form of collars that extend through openings
in the plates l5 adjacent the upper and lower
15 ends thereof to provide bearings for the plates in
will be obvious that it can be operated by suitable
motive power, and in that instance a small elec
tric motor will be connected to the shaft 25 or to
the gear 24.
It is thought from the foregoing description
that the advantages and novel features of the 10
invention will be readily apparent.
It is to be understood that changes may be
made in the construction and in the combination
and arrangement of the several parts, provided
that such changes fall within the scope of the ap 15
that the keeper members are mounted on
screw pins M, as best shown in Figure 4.
Cooperating with the keeper members IQ
securing the blades on the outer surfaces of
20 plates l5 are ribs 22, one for each plate and
pended claims.
What I claim is:
l. A safety razor blade sharpener comprising
a leak proof housing including a glass cylindrical
body and adapted to receive liquid, blade attach
handles projecting above the plates whereby ready
access may be had thereto for rotating the keeper
10 members 19 for securing and releasing the blades
with respect to the blade holder, as will be ap
tending therefrom along the longitudinal center
thereof, for the purpose of being received in the
usual slot of a blade, as shown, consequently it
will be seen that the blades are held against lat
25 eral and endwise movement, by the keeper mem
bers and the ribs, and the edges of the blades are
held in contacting engagement against the inner
surface of the body I, by the action of the coil
springs 16.
Secured to the stub shaft 8 is a bevel gear
23 that has meshing therewith a bevel gear 24, the
latter being ?xed to the inner end of a shaft 25
which is mounted in a hub 26 that is formed on
and extends laterally from one arm of the frame
fl, and secured to the outer end of the shaft 25 is
a crank handle 21.
In the use of my sharpener, the blades are se
cured to the blade holder, in the manner described
and shown, and the holder with the blades there
40 on is placed within the housing that has liquid
therein, such as water or light oil, of a quantity
to cover the blades.
The cap is then placed in
position, and when the crank handle is operated,
it will be obvious that the blades are rotated
against the inner surface of the glass body which
of course will result in sharpening the same in
a manner to provide sharp, smooth, keen, cutting
edges thereon, it being obvious that the glass is
50 the sharpening medium and that the liquid re
ment means including a shaft mounted for rota
tion in said body, means radiating from said
shaft, blade receiving means mounted for slid
able movement on the radiating means, means
carried by the blade receiving means at each 25
end thereof frictionally engageable with the sides
of the blade for detachably securing blades there
to, spring means engageable with the blade re
ceiving means for urging the blades carried there
by against the inner surface of the glass body, 30
a cap for the housing, and means carried by the
cap and received by the shaft for rotating the
blade attachment means.
2. A safety razor blade sharpener comprising a
housing adapted to receive liquid and including
a glass cylindrical body, blade attachment means
including a shaft mounted for rotation in said
body and removable therefrom, blade receiving
plates carried by the shaft, means swingably car
ried by said plates at each end thereof for detach
ably mounting a blade to a plate, blade slot re
ceiving ribs on said plates and cooperating with
the keeper means for detachably securing blades
thereto, spring means engageable with the blade
receiving plates for urging the blades in contact 45
ing engagement with the glass body, a remov
able cap for the housing and received by the body,
and means carried by the cap for rotating the
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