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Патент USA US2130311

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Sept. 13,- 1938.
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F. |_. PARHAM i
2,130,31 1
MOTOR OPERATED SHAVÉR
Filed Jan. 21, 1937
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„Sept 13,> 1938.
F. |_. PARHAM
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2,130,311
MOTOR OPERATED SHAVER
Filed Jan. 2l, 1937'k
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Patented sepa-_ 13, 193s
¿s ¥ 2,130,311
UNITED - STATE >s
ÈATENT oFFIcE ,
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2,130,311 ' .
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noron-orsaa'rnnsnavna
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Fletcher L. Parham, Akron, Ohio
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_ application Jaim-y 2_1, 1937, sex-isi No. 121,551
eenima`(cl.so-41)
This linvention relates ` to ‘apparatus for -shav Y
ing and has particular relation to motor-operated
shavers.
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of frequent cleaning ofthe shearing cutters or "
the cutter head.
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» Another object of the invention is to provide
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Heretofore, numerous motoreop'erated shavers ' means in a motor-operated shaver whereby the
sheared' hairs may be stored for future conven
been entirely satisfactory for various reasons.v ient “disposal thereof., thus eliminating the litter
One of the principal dimculties encountered in usually attending the use of a motor-operated
5» have been placed on the market, but nonefhave
the use of the present types of motor-'operated
shaver.
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Another object of the invention is to provide
means in a motor-operated shaver for maintain 10
ing suction in the cutter-head thereof and utiliz-l
ing said suction for cooling the shearing' cutters.
Another object ofthe invention is to provide
cooling means _for the motor of> a motor-operated
shaver,` said cooling means being'utilized Vfrom a 15
shavers is that, due to the tendency of the beard,
10 for example, to incline angularly of the sinn sur-_
face in the direction of the normal shaving stroke,
the hairs either do not come into the path of
- the shearing cutters at all or the final result is
an unevenly trimmed beard with ugly patches
l5 of stubble showing. Another diñiculty is experi
enced with the present types 9i motor-operated
suction created in the cutter-head.`
of the shearing cutters, the raised portions _or
be easily handled bythe user.
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Another object of the invention is to provide
shavers in that, due to the amount of pressure
al motor-operated shaver‘of'the character de
necessarily Fapplied to the _skin surface in at
tempting to get a close shave, and due also to the » scribed which can be economically manufactured
v20 presence of sharp .portions at the leading edges and which is of suchcompact construction as to 20
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'I‘hese and other objects are attained by means
mounds around the pores- of the skin often be
come torn resulting in unsightly sore spots on the^ of the apparatus illustrated in the. accompany
surface of the drin with the attending danger in'g drawings and described below. `It is -to be
understood that _the invention is not limited to 25
` 25ct infection. Because of these and other'ob
the speciñc form thereof shown and described.
jectionable features it has heretofore beenprac
0f the accompanying drawings:
tically impossible to get a clean, close shave
Figure 'l is a plan view cfa motor-operated>
with any of the present types of motor-operated
Shavers.
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shaver embodying the invention.
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.Figure 2` is an elevation of such a shaver.- ' 30
Figure 3 is an enlarged cross-section taken on
One object ofthe invention is to providemeans
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in a motor-operated shaver whereby the hairs
the line 3_-3 of Figure 2.
'Figure 4 is an enlarged'cross-section taken on
normally tending >to _incline angularly withere
spect to the surface of the skin will be automat
_ ically drawn into the path _of the shearing cut- _ vthe line 4_4 of Figure l.
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'Figure 5 is an enlarged end view taken' vsub
35 ters to insure an even and close shave. _
stantially on .the- line. 5_5 of Figure v3.
Another object of this invention is to provide
e. motor-operated shaver .which will automatical- »
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Figure 6 is a fragmentary cross-section, great
ìy_ stretch the skin surface, and, by ñattening the _ ly enlarged, illustrating application of the shear
ing head to the skin. but before pulling action
has been applied to the skin and hairs thereon. 40
Figure 'I is a view similar to Figure 6 after pull
mounds around the- pores thereof, shear of! the
,m hair at a point which is _normally beneath the
skin level, thereby obviating the necessity of
either applying hand Apressure to the shaver or
ing action has been applied.
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of endeavoring to stretch the skin .with the free y ’ Referring to‘Figures 1_ to 5, inclusive, of the
hand.
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drawings, _i0 is a _casing of'suitablematerial. and
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ÍAnother object of the invention is to provide' -of suitable shape andweightfor easy grip in the- 45
a' motor-operated shaver in which the necessity e hand. The casing may comprise of a lower
of having. abrupt leading edges on the shearing » chambered portion Il and a cover I2 secured
cutters-has been obv'iated, thereby eliminating thereto by means --of screws I3," I3. Within a
thedanger of infection by _reason of the tendency large chamber I4 inthe casing I0 there may be
s@ of sharp leading edges to rupture the skinïaround mounted a suitable motor or motivating unit l5, 50
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the_-pores..,..
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A_nother vobject of the invention is to provide
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such as an electric motor, which may have a cen
trally driven shaft l5 mounted longitudinally of `
a motor-operated shaver havingîmeans whereby the casing i . A socket i Il may be provided, at
the sheared hairs are carried away froml the the-small end of the casing I0, for retaining the
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c5 .shearing~cutters,- thereby obviating the necessity »_ plug of a connecting electric _cord I l?.
2,130,311
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Removably mounted in a grooved portion I1, at
the enlarged end of the casing I3, there may be
of creating a suction within the cutter-head I 3.
An l_opening 42 in the vbase 22 of the outer cutter
a cutter-head I8, a set screw I3 being provided v 20. and plurality of openings 43, 43 in ‘the base
to hold the latter in a fixed position. The cutter - 33 of the inner cutter 2l are provided to connect
head may comprise- an outer relatively ñxed the cutter-head with the fan.
The rush of air created by the suction-fan 4I
shearing-cutter- member 23, -and a cooperating
inner reciprocating or oscillating shearing-cutter obviously will have the eifect of keeping the cut
member 2 I. Other forms of movable cutters may ter-head I8 cool as well as to keep the motor-unit
I5 cool by said rush vof air passing through the
be used _within the spirit of the present invention.
chamber 31 and conduit 40.
The outer shearing-cutter member 28 is essen
If it is so desired a suitable receptacle, such as
tially hollow and comprises a comparatively thick
the vacuum bag 44, may be'removably secured to
base portion 22, upper and lower walls 23, 23 con
verging therefrom to join an outer shearing plate the end of the conduit 43 for the purpose of col
'24, the- latter being quite thin, a wall 25 closing lecting and storing the sheared hairs until they
can be conveniently disposed of. This bag may
15 one end and a plate 26 to close the other end.
The plate 26 may be removably _secured to the be of the porous type commonly used in vacuum
outer shearing cutter 23l by means of a screw 21 cleaners and may be provided at its outer end
secured in the base portion 22. The Ashearing with a suitable spring clip 45 so it can be partially
plate 24, for certain purposes of the invention, supported in unfolded condition by the connecting cord I5’.
20 .subsequently to be described, may be concave on
In actual use the shaver herein described and
the outer face thereof. Shearing plate 24 may be .
illustrated is held at right angles to the surface
provided with a series of openings, such as nar
row slots 28, 28 extending in parallel relation of the skin, with the outer shearing plate 24
pressing gently against the skin, as shown in Fig
vertically across the face of the plate and termi
‘nating at points a short distance back of the ures .6 and '1. With the motor I5 running to drive
edges or corners 29, 23 formed by the juncture the shaft I6, thereby operating the fan 4I to
of the shearing plate 24 and the'top and bottom create a suction through the slots in the cutter
walls 23, 23. This provides a series of Vnarrow headv I8, as well as to cause a rapid reciprocat
cutting blades 28a; 23*l between said slots 28, 28; ing shearing action of the inner shearing cutter,
30 These edges or corners 29, 29, which constitute the shaver is stroked gently- back and forth along
the leading edges during the shaving strokes, may the surface. of the skin, preferably in a direction
be provided with a slight radius to prevent rup Y* in line with the slots in the cutter-head I8.
Due to various causes, the hairs and mounds
turing or tearing of any raised portions on the
surface of the skin, as for example the mounds surrounding the pores of the skin become flat
tened. This is true particularly in the case of the
around the pores.
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_Slidably mounted within the outer shearing
cutter 20 is the inner shearing-cutter member 2I.
The latter comprises arelatively thick base por
tion 30, and top and bottom walls 3I, 3| con
40 verging therefrom to join an inner shearing
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hairs of the beard which generally assume an in
clination to the surface' of the skin, in the direc
'tion of the normal stroke of an ordinary blade
razor for example. The suction created by the
fan 4I drawing air through the slots in the cutter
plate 32. The outer faces of the walls 3i, 3I and - head I8 tends to draw the flattened hairs from
the shearing plate 32 fit snugly against the cor
their angular positions, through the slots in the
responding inner faces of the outer shearing cut- . head I8 to straight positions in the path of the
ter 20. On the inner cutter 2| there may be a shearing cutters. By using a concave cutter head,
45 series of openings, such as narrow slots 33, 33 cor
responding to the openings `28, 28 in the outer
shearing cutter 20„thereby providing a series of
cutting blades 33‘, 33n corresponding to the'cut
- ting blades 28“, 28* on said shearing cutter 20.
50 For the purpose of urging the inner shearing cut-
the skin is drawn into the cavity of the head (see 45
Figures 6 and '1) stretching the skin'between the
edges of the cutter head. This stretching of the
skin tends to flatten the mounds of the skin sur
face and widen the gap between the individual
hairs thereby decreasing the depth of the pore
cavities from which the hairs grow, thus making
ter 2I outwardly against the outer shearing cut
ter 20 there may be provided spring-pressed balls it _possible for the shearing cutters 2.0 and 2I to
34, 34 ‘in Athe base 22 of the outer cutter 20, which. ~shear the individual hairs at points which would
ride freely on the inner- surface of the base 33 normally lie beneath> the outer surface' of the
55 of said cutter 2l whilethe latter is being recip-l skin, as‘is best illustrated in Figure 7. Figure 6 55
rocated. An oblong >opening 35 may be provided shows the cutters 23 and 2l being applied to the
in the base 30 of the cutter 2 I, adapted to receiveJ skin surface, but without suction. Figure 'I is a
an eccentric pin-36 on the end'of the motor shaft similar view, but with suction applied, illustrating
I6. Rotation of the shaft I6 will then cause the the manner in which the skin is _stretched and
inner cutter' 2I to be reciprocated suñiciently to the hairs drawn into the path of the cutters. It
provide a shearing action between the shearing is to be understood that many advantages 'of the
plates 24 and 32.
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To carry out the invention means are provided
to produce a suction at the outer end of the cut
terl head. While suction means could be connect
invention are attained if nat-ended cutter heads
_or cutter heads of convex or other shapes are used
but the concave formation is considered preferable
because’of the stretching eifect thus secured,
ed to the shaver in various ways, it is preferable ' The shaver may be so designed, with respect to
to build such a means into the shaver itself. To the depth of cut-back of the slots at the corners
_Y this end there may be a chamber 31, provided in
the shaver; which is air tight except for an open
70 ing 38 in the wall of the casing I0 adjacent the
' cutter> head I8, and a passage 33 in the conduit
4l extending from said chamber >3‘I alongthe
bottom of the casing to' theY small end thereof.
Within the chamber 31 asuitable suction-fan 4I
23, 23 in the cutter head I8,Aand with respect to
the- amount of suction produced by the fan 4I, as
to give the user thereof asmooth, even' shave with 70
no stubble showing above the normalsurface of
the skin. By the use of the present invention, due
to the lack of sharp comers at the leading edges
23,- 23 -ot .the .cutter head I8, and because it is not
75 maybehxedontheshait Iii'orthepurpose Y necessary to apply excessive pressureto the skin. 75
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_ 2,130,811
the danger oi’
the latter'. is eliminated.
tively ilxed outer cutting element, said outer cut
ting element including a concave cutter plate,
slots in said outer cutting element and in said
movable cutting element adapted to 'receive the
hairs to be sheared, said slots being cut back a'
portion from the face 'of said cutter-head, and
In this way nature has a chance`to heal any
previous- damage to the .skin and restore it to -a
‘ _ normal healthy condition.
lModizñcations of the invention maybe‘resorted
to without departing from the spirit thereof or
the scope of the appended claims.
What is claimed is:
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means for maintaining suction at said cutter-head _
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uirough said slots and said cut-back portions4
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A ' 1. A motor-operated shaver comprising a mo
thereof.
10 tor, a cutter-head including an inner motor-oper
ated movable cutting element, said cutter-head
having a ilxed concave outer cutting element, and
means.- for maintaining suction _at said cutter-_
head, the con'cavity4 of said outer cutting element
15 being so formed and arranged that said suction
will draw the skin therein for the purpose de
scribed'.
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7. A motor-operated shaver comprising a mo 10
tor, a cutter-head including> a motor-operated
movable cutting element enclosed within a rela
tively _iixedouter cutting element, said outer cut
ting element including a concave cutter plate, l
slotsin said outer cutting 'element and in said 15
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' 2. A motor-operated _shaver comprising a mo
tor, a cutter-head including an inner motor-op
movable cutting element adapted to receive the
hairs to be sheared, said slots being outback a
portion from the face of said cutter-head, said
cutter-head having substantially rounded corners
at the leading stroking edges thereof, and means 20
_having a iixed concave outer cutting element, and -ior maintaining suction at said cutter-head...means for maintaining suctionat said cutter
through said slots and said cut-back portions
head, the concavity oi said outer cutting element
20 'erated movable cutting element, said cutter-head
thereof.
„being so formed and arranged that said suction
. will draw the skin therein for the purpose de
scribed, said means comprising a suction Ian in
said shaver operable by said motor.
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3. A motor-operated shaver comprising a mo
tor, a cutter-head including a relatively ñxed out
er cutting element and an inner motor-operated
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8. In a motor-operated shaver, a hollow casing
having a motivating unit therein, a hollow cutter 25
head removably ñxedon said casing, said cutter
head comprising a fixed outer shearing cutter
having a concave cutter-plate thereon and a mov
able inner shearing cutter, a series of slots in the
shearing plate _oi' said outer shearing cutter, and
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movable cutting element, said outer cutting ele- _ a-corresponding series of slots in the adjacent
ment including 'a concave cutter-plate, and means
shearing plate of said inner shearing cutter, said
` for maintaining suction inA said cutter-head, the slots being adapted to receive the hairs to .be,_ "
' _concavity of said cutter-plate being _so formed , sheared, means'connected‘with said vmotivating f
' and arranged that said suction will draw the skin unit> for moving said inner shearing cutterl to
therein for the purpose described.
shear said hairs, and means operated by said `mo- -
_, 4. A motor-operated shaver comprising a mo
tivating unit for creating a suction within said '
tor, a’c'utter-head including a relatively ñxed out
hollow cutter-head through said slots,- in the outer
* er cutting element and an inner motor-operated and inner shearing cutters, the concavity of said
movable cutting Jelement yenclosed within said cutter-plate being so formed and arranged that
outer cutting element, said outer cutting element said suction will draw the skin therein for the
including a concave’cutter-plate, and means for Vpurpose described. v '
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maintaining suction in said cutter-head, the con
9. In a motor-operated shaver, ~a hollow casing ,
cavity of said cutter-plate being so formed and having a motivating unit therein, a hollow cutter
45 arranged that said' suction will'draw the skin _head removably ilxed on said casing, said cutter
therein for the purpose described. -_
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head comprising a ilxed outer shearing cutter
.. 5. >A motor-»operatedy shaver comprising a mo
' having a concave cutter-plate thereon and a mov- ‘
tor, a cutter-head including a relatively ilxed out
er cutting element and an inner motor-operated
able inner shearing cutter, said cutter-head hav
ing substantially'rounded corners at the leading
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movable cutting element enclosed within said' ' stroking edges'thereof, a series of _slots in the
outer cutting element, said outer cutting element « shearing plate of said outer shearing cutter, and
including a .concave cutter-plate, said outer and a corresponding series of slots _in the adjacent
inner cutting elements having openings or-slots -shearing plateof said inner shearing cutter, said
therein adapted to receive the hairs tobe sheared, -
slots‘beitng adapted to.receive the hairs to >be
sheared,A means connected with said motivating 55
head, the concavityoi.' said cutter-plate being so‘ unit for moving ‘said'inner-shearing cutter to
and means for maintaining suction in said cutter-_
formed and arranged that said suction willdraw shear said hairs, and means operated by said -mo
the'skin therein for the purpose described.
tivating unit for creating a .suction withinl said
6. A motor-operated shaver comprising a mo
hollow cutter-head >through said slots in the outer
tor, a v'cutter-'head including a motor-operated- ‘ and inner _shearing
movable cutting element enclosed within a rela
FLETCIER L.
cutters.
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