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Патент USA US2124985

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‘July 26, 1938.
2,124,985
B. R.‘ NY‘HAGEN
MOTOR DRIVEN HAIR CUTTING IMPLEMENT
'
Filed July 14. ‘1936
179.2.
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INVENTOK
50/726} 4’. ?ylzajen
ATTORNEY.5‘
Patented July 26, ‘19318
' antes
arrests
Moron nurvnu a
cnrrrne i
murmur ~
may R. lrlyhagen, Brena, N. W.
application lluly is, root, serial no. cases
5 onion; (oi, as)
This invention relates to motor driven razors
‘or hair cutting implements and broadly compre
hends an improved device of this character
wherein the movable cutter element is exposed
for contact with the skin in order to serve as a
means for raising the hair and properly guiding
and presenting the same between the cutting
, edges of the teeth of the cutter elements, while
the movable element also acts to massage the
skin during the shaving operation.
Fig. 1i is an enlarged transverse sectional view
taken approximately on the line
of ‘Fig. 3.
Fig. '5 is an enlarged perspective view of the
movable cutter element of the cutter unit"
Referring to the drawing by characters of
reference, A designates generally the cutter unit -
and B the holder member therefor which mem
ber consists of a hollow handle constituting a
housing for a motor it diagrammatically illus
trated in the present instance as an electrical mo“ 10
More particularly the invention resides in a tor and having a‘ shaft it, one terminal of which
device of the indicated characterwhich includes ‘ extends into the groove it; formed at one end of
fixed and movable cutter elements each having the handle. An element having an eccentric or ‘
teeth provided with cooperative‘ cutting ‘edges crank pin it is carried by said shaft terminal
between which the hair to be cut is adapted to and as illustrated; said element is removaioly 15
be engaged, the movable cutter element being
associated therewith by threaded engagement‘
so ‘arranged as to contact with the skin in order
to agitate and massage the same while function-1
with the same so that the said element may be
and uniform severing of the hair without the
tangular shape and the lower portion thereof is
designed to snugly fit within the groove it of
theend of the handle member B and is remov 25
ably retained in place by means of a setscrew it
having a knurled manipulating head it, the
periodically replaced when the crank pin is worn
ing to raise the hair to a position perpendicular ‘ to insure proper functioning of the cutter unit.
' The cutter unit A consists of a fixed cutter 20
2 to the plane of the skin so as to ‘properly guide
element
iii and a movable cutter element it.
and present the same to the cooperative cutting
' edges of the teeth and thereby insure a close The fixed cutter element i5 is of generally rec
necessity of employing shaving soaps or creams.
25
As a further feature, the invention provides
in a device of the indicated character, a movable
cutter element in which the toothed portion
thereof is resiliently mounted and tensioned so
as to pull and maintain the teeth thereof into
3 O frictional contact with. the teeth of the vfired
cutter element.
,
inner terminal of said screw engaging within a
keeper depression it in one at the longitudinal
side faces of the ?xed cutter element.
_
30
The ?xed cutter element is formed. with a
The invention is also directed to an improve
ment in the holder and actuator member for the
longitudinally extending circular‘bore M with
speci?cation and the accompanying drawing in
which there is‘\ disclosed, by way of example, a
single embodiment of the invention, while the
claims cover variations and modi?cations falling
upper portion of the ?xed cutter element it is '
then provided with a surface of transverse par- .
which a longitudinal slot ti communicates,
cutter unit which resides in the provision of an \ which slot 2i opens through the upper surface
of the ?xed cutter element. The outer sides of 35
35 eccentric or crank pin removably associated with
the motor shaft terminal whereby said pin may the fixed cutter element iii adjacent the slot are
be periodically replaced when worn to insure provided with longitudinally extending grooves
or concavities 22 and‘ the upper portion of the
proper functioning oi‘ the device. ' '
With the above‘ enumerated and other objects slot 28 is ?ared. laterally outward to provide lat
in view, reference is now made to the ‘following , erally and upwardly divergent surfaces 23. The 40
" within the scope oi? the invention'
In the drawing:
.
\
Fig. l is a side view of a. motor driven, razor
constructed in accordance with the invention
and partially broken away to disclose the under-'
lying structure.‘
Fig. 2 is a fragmentary enlarged sectional view
therethrough taken approximately on the line
2-2 of'Fig. 3.
.
'
Fig.- 3 is a. fragmentary enlarged plan view
55 with parts broken away and shown in section.
allel grooves de?ning~teeth it. A centrally ar
ranged vertical opening it is formed in the
lower portion of the fixed cutter-element i5 and
extends from the here to downwardly through
the lower surface of the fixed cutter element to
receive therethroughuthe upper terminal of the
shaft i2 and the eccentric pin it;
The movable cutter element it consists of a 50
substantially cylindrical base rod 2% of a diam
eter to snugly ht within the bore ‘(it of the ?xed
cutter element to andof a length approximately
the length of said bore. The upper portion of
said base rod it is provided with a ?at longitudi 55
2
2,124,985
nally extending face 27 and a cutter bar 28 is
yieldably connected with the base rod 26 in
superposed relation to the ?attened upper sur
ment with laterally and upwardly divergent up
per surfaces on opposite sides of said slot, the
upper end of said ?xed element having longi
face 21.
tudinally spaced transverse grooves, the movable
As illustrated, the upper portion of the cutter
bar 28 is formed with laterally projecting ?anges
29, the undersurfaces of. which are inclined lat
erally andupwardiy to coincide with the later
‘cutter element comprising a base slidably ?tted
within the bore and a cutter bar ?tted within
- ally and upwardly divergent surfaces 23 of the
10 ?xed cutter element while the upper surface
said slot and provided with lateral ?anges hav
ing upwardly inclined under surfaces and formed
with longitudinally spaced transverse grooves,
is formed with transverse parallel grooves ‘38
corresponding to the grooves of the ?xed cutter
and resilient means for drawing said under sur 10
faces of the ?anges into contact with the upper
surfaces of the ?xed cutter element.
element and de?ning on the ?anges 29 teeth
N which cooperate with the teeth 2d of the ?xed
2. A shaving device comprising a toothed sta
tionary cutter member having a recess therein,
cutter element to sever the hair when the mov
able cutter element i6 is reciprocated with rei- I
and a toothed movable cutter member recipro
cably mounted in said recess and having sub
15
stantially its teeth only overlying the teeth of
The base rod 26 of the movable cutter element said stationary cutter member, the underside of
the teeth of said movable member engaging
is provided with a transverse notch ‘52 inter
against the outer surface of the teeth of said
mediate its ends and in the lower portion thereof
to receive the eccentric or crank pin it‘; whereby stationary member and the outer surface of the
teeth of said movable cutter being adapted to
upon rotation of the motor shaft i2 reciproca
directly engage the slain, the teeth of said sta
tion is imparted to the movable cutter element
to. The yieldable connection between the lease . tionary cutter member being integral therewith
and the outer surface of said movable member
rod 26 and the cutter bar Eti'consists of a pair
of studs 33 threadedly engaged in the cutter has being whollyfree oi overlying portions of said
shaving device whereby all of said outer surface
28 adjacent the opposite ends thereof and ex
tending downwardly therefrom through ape!» is directly engageahle with the skin.
3. A shaving device comprising a ?xed
tures
into recesses 3% in the ‘case rod
where
erence to the ?xed cutter element B5.
coiled expansion springs
surround the studs
and are interposed between the ‘sorted heads
thereof and the inner or upper ends
the
recesses 35 so that a tension is exerted to nor
into
mallyfiat
pull contact
the lowerwith
surface
the of
surface
the cutter of
barthe
base rod
(lloviowiy, when the movable cut
ter element is positioned in the tired cutter ele
ment to, the tension thus exerted by the springs
her having a plurality of integral spaced teeth. A
..
and a recess adjacent thereto, the spaces 3..ue~
tween said teeth being open at one end to permit
hair to enter between said teeth, and a movable
cutter member in said recess having a plurality
of thin spaced teeth reciprocable over
in
engagement
?rst named teeth,
with the
said outside
movablesurfaces
cutter member
of
having substantially its teeth only overlying the
will draw and. maintain. the inclined lower teeth; of said ?xed member, the spaces between
surfaces of the flanges
the teeth til formed said last named teeth being open at one end to
thereon into contact with the divergent upper permit hair in said?rst spaces to enter between
the second named teeth to be cut as said cutter
surfaces of the teeth 26- to insure a proper con
tact thereof and a definite shearing action of member moves, and the outer surface of said
the edges oi the manipulating teeth 26 and El.
movable member being wholly free of overlying
In use and operation it will be apparent that
portions of such shaving device whereby all oi 45
the grooved upper surface of the movable cutter said outer surface is directly engageable with the
element iG being exposed when shaving will con
skin.
’
tact with the skin in order to de?nitely agitate
a. A shaving device comprising a fixed block
and massage the same to promote circulation
provided with a channel. groove extending longi
- coincident with the shaving operation. Lilia
tudinally therein, the upper surface of said block
wise, the movement of the said movable cutter on each side of said groove being formed with
element while in contact with the slain will
spaced teeth, a reciprocable cutter block in said
cause the moving teeth to raise the hair to a
channel groove having a thin toothed portion
position perpendicular to the‘plane of the Skin overlying and engaging the upper toothed ‘sure
and thereby properly guide and present the same faces of said fixed block, and means tor recipro 55
to the co-acting cutting edges of the teeth thus cating said. cutter block.
insuring a close and uniform severing of the
5. A‘shaving device comprising ‘a ?xed block
hair without employing shaving soaps and provided-with a channel groove extending longi
creams and without irritating the slain.
tudinally therein; the upper surface of said block
Whatis claimed is:
60
on each side of said groove being formed with
1. In a power driven hair cutting implement, spaced teeth, a reciprocable cutter block in said
"a holder and actuating member and a cutter channel groove having a thin toothed portion
unit carried thereby including cooperative cute overlying and engaging the upper toothed sur
ter elements relatively ?ned and movable with faces of said, ?xed block, and means for recipro
65 reference to ‘said holder and actuating member, cating said cutter block, thev teeth of said cutter
the ?xed cutter element having a longitudinally
extending bore and a longitudinally extending
slot communicating with said bore and opening
through the upper end of said ?xed cutter ele
igloo: lying wholly within the edges of said ?xed
oc
.
-
'
l
BARNEY R. N'YHAGEN.
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