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Патент USA US2121438

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June 21, 1938.
J. MEDELLIN T
2,121,438
DEVICE FOR THE SHARPENING OF RAZOR BLADES
'
Filed Nov. 28, 1936‘
J’osé MEDELLI’NT
6%?
$97’
Patented June 21, 1938
, 2,121,438
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‘2,121,438 ‘
DEVICE FOR THE SHARPENING OF RAZOR
.
BLADES
Jose Medellin T, San Luis Potosi, Mexico I
Application November 28, 1936, Serial No. 113,119
In Mexico February 22, 1936
3 Claims. (o1. 51-212)
The’present invention refers to a device for the
sharpening‘ of razor blades, different from the
a slight fold which forms a rim or flange on each
end, these ?anges or rims having for their object
ones known up to the present time due to the fact that of giving ?rmness to the sharpener when
that mine is constituted of simpler and smaller ‘ the device restson a table or level surface, at
the moment of being used.
5
elements such as permit an easily handled sharp
‘ The manner of using the sharpener of my in
ener, ready to use at any given moment and in
any place, to be carried in the vest pocket.
vention, is as followsz-The razor blade is placed
‘ In the attached drawing, Figure 1 represents inside of the holding device of same, as illus#
the sharpener element, or say, the interior'face trated in Figure 3, and with only one hand and
10 of a slightly curved metal sheet for the purpose two ?ngers of same the latter are sustained on
of creating the concave surface I {and this face the blade that is already held and placed in the
is also ground and slightly burnished for the blade‘holder'against the sharpener face, effect
purpose of sharpening the edges'of the razor
blades upon the latter rubbing against the said
15 face whether with movements effected in a lon
gitudinal direction or upwards and downwards.
The concave form‘of the sharpener element has
for its.object that of ‘permitting the contact of
the edgesof the blades Which are going to be
20 sharpened to maintain an adequate angular re
lation, as this is the essential characteristic for
the obtainment of a keen cutting edge and effec
tive stropping; 2, 2, are the perforations through
which the pivots 3, 3, pass, of'Figure 2, which
ing movements in a longitudinal direction and
also downwards and upwards.
The lubricating element, after a periodical 15
feeding of oil will always maintain the sharpener '
surface adequately oiled as well as theedges of
the razor blades, by the mere contact that the
former has with it when the entire apparatus
is closed.
I know that prior to my invention there have
existed different devices for the sharpening of
razor blades, vsome of them having rotating
mechanisms and others having only simple
pieces of glass, but none of them werev of small
size and of extra-level form for carrying in the
pled to another. ‘Figure 2 is a conventional per
spective View of the metal sheet which serves vvest pocket or adapted to razor‘ cases; and the
as a cover or' cap that when coupled to the sharpener device of my invention has also the
serve as a clasp upon one sheet becoming cou
sharpener sheet is not in service and is trans
‘characteristic of being easily handled and of
30 formed‘together with the sharpener piece 'in a sharpening the blades at an adequate angle. 30
‘ pocket case; 3, 3, are two pivots or salient pieces Therefore, I claim as mine:
1, A razor blade sharpener adapted to sup
which serve both for receiving and sustaining
the blade holder 4 as ‘well as to fasten together port a thin cover and comprising a transversely
with pressure being exercised in the center of arcuate uninterrupted strip of thin metal having
35 both sheets when coupled together they form a its concaveside constructed and arranged as a
blade, sharpening surface,'said surface being a
pocket case. To open same, one of the project
“ ing ends of the level plate is’ pressed down
wards. ' 5, is a case which contains a cushion 6
of absorbent material impregnated with lubri
40
eating oil, with the latter having for its object
the function of continually oiling the sharpener
face of the piece marked I in Figure 1.
Figure 3 represents a blade holder 4 of razor
blades, in ‘which 1, v1, there are two holes or per;
46 forations which coincide with those of the razor
‘ blade, and 8 isla salient piece that engages in
the hole of the center of the blade and which
has for its object that of preventing the latter
‘ from having play or from slipping upon its being
.to held with two ?ngers of the hand against the
continuous segmental concavo-cylindrical sur
face, a flat cover plate of thin metal‘adapted to
engage the longitudinal edges of said arcuate
strip, and a pair‘ of headed prongs projecting 40
from the plate in spaced relation on the longi
tudinal median line of the plate, said strip hav
ing spaced openings on its median line to receive
and releasably hold said prongs whereby to hold
the plate and strip together.
45
2,. A razor blade sharpener adapted to support
a thin cover and comprising a transversely arou
ate uninterrupted strip of thin metal having its ‘
concave side constructed and arranged as a
blade sharpening surface, said surface‘ being a 50
concave face of the sharpener element, and in ‘ continuous segmental concavo-cylindrical sur
this manner obtaining also the friction movement face, a ?at cover plate of thin metal adapted to
effected at an adequate and uniform angle. At engage the longitudinal edges of said arcuate
‘both ends of the plate or metal sheet sharpener ’ strip, a pair of headed prongs projecting from the
55 and on the exterior part of same there projects
plate in spaced relation on the longitudinal me- 55
2,121,438
dian line of the plate, said strip having spaced
uous segmental concave-cylindrical surface, a
openings on its median line to receive and releas
?at cover plate of thin metal adapted to engage
the longitudinal edges of said arcuate strip, a
ably hold said prongs whereby to hold the plate
and strip together, an open lubricant holder on
the face of the cover plate adapted to confront
the arcuate strip, and a lubricating pad in said
holder contacting and lubricating said strip upon
closing of the plate on the strip.
3. A razor blade sharpener adapted. to support
10 a thin cover and comprising a transversely arou
ate uninterrupted strip of thin metal having its.
concave side constructed and arranged as a blade
sharpening surface, said surface being a contin
pair of headed prongs projecting from the plate
in spaced relation on the longitudinal median
line of the plate, said strip having spaced open
ings on its median line to receive and releasably
hold said prongs whereby to hold the plate and
strip together, and a razor blade holder adapt
ed to ?t between the plate and strip and having 10
spaced openings wherethrough the prongs of the
strip pass upon assembly of the parts.
JOSE MEDE'ILDT T.
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