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Патент USA US2113962

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April 12, 1938.
2,113,962
'.v. J. MolR
GRIPPING MEANS
Filed Aug. 13, 1935
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Patented Apr; 12, 1938
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2,113,962
_PATENT oFF-ice
vincenti: Meir; cleveland neightaoliiu, assigner"
to`~ The San-Electra Company, Cleveland', Qhio,A
sippliçatiònnùgust 1,3, 1935,> seriaLNm 3559331
12I claimt ' (c1: 12s-¿Sir
This invention relates to gripping means;
An'` object- otï the inventionf` ist tel provide an
improved gripping means»` which will effectively
grip 'and pull» objects.
y
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Another'object isfto provide an improved grip
ping meanswhich‘may» be simpl-y operated from a
source'of power.
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Another Objectis : to: provide` an- improved grip
ping meansV which wil-l besimple» in construction.
Another object istdprovide animproved grip.
Ding‘means which will loe-‘neat and attractive in
appearance-_.
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is,
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.Another ’ object `is;l to providean improved" grip
ping; means which will always! apply' a; predeter
mined pressure to objects gripped thereby.
Another object is toi provideA animproved grip
ping: means which- mayE be.; economically manu
factured.
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Another obfject isfto provide> >an improved grip
20 ping means which will have» relatively few mov
ing parts.
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‘ , Another objectßistoî provide, animprovedv grip
ping means whichlmay be easily‘manipulated.
Other objects will` hereinafter appearVIK
25
thereof, (that chosen/1» for illustration comprising
anatta'chmentr for pulling; hairsas is _done in
'pluckingt human eyebrowscand. which `may con
30 veniently be operated by any device having a ro
a,manicuring
machine)` illustrated in@ the `accompatrying draw
ingpi-n
which:>
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_ Figure» -1 isal central longitudinal sectional
View ofi thev deviceaabout twice/»actual size,A show
ing the grippingk elements»
`closedpretracted
position;
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Y,
Figure 2»is> a similar viewf showing the elements
in. open extended position;Í
40
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FigureB is.- an.. elevational viewv- of the device.;
and
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AFigures 4'and'5'l are vcross-sectional'views taken
through cam I2! of Figures 1 and »2, respectively;
The device illustrated in the'drawi'ng is` in
tended to be connected *toa flexible, shaft‘ pro
vided" with a” clutcli‘, such'` ‘fòr‘v instance as shown
in‘fmy" prior Patenti' Nò? 2§0’0`8'-,»920; patented July
2‘3; 1935; Ittconsist'sèof a generallyftubulari body
or handle having/thròughoutî a~ portion of its
extent
cyli'n'dri'cal''y bore or' aperture 21,
and throughout thef'remainder'of: its extent: an
enlarged counterbore'» or` aperture 3;y the ,two ap#
ertures»U meeting atl as substantial/1y square or
radiali` shoulder 4s
55
»
,-
portiony 6 ñtting- within»l the bushing, a reduced
shank 1- projecting` beyond the bushing toward
or beyond the rear end: of the body, andf any en
larged forward end 8.
A set screwl 9`- passesy through the*v body and 1,0
bushing: and/«has- its enel> received within an a'n
nular groove' I-0~ farmed"` in the exterior of in
termediate or supporting> cylindrical part 6 o'f
the‘spindle, and thus locks it against axial move
ment.
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15
The forward end> of the spindle isfprovided‘with
a; continuousr` inclined cam groove Mandat its
end carries an arcuate- ñange l2,> constituting an
other cam surface. Sli'dable over this portion
of- the spindle is’t a cylindrical plunger I3 having
a~recessf Illy into‘which‘the` end» of5 the spindle pro- o O
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jects.
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A- set> screw i5 is threaded through the plunger
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The invention- wiflli beibettenunderstood from
the description of one. practical embodiment
‘ tating. shaft-,„¿ suchfkfor instance
bushing 5; ‘which’ may" be secured in place in
any desired manner,V conveniently by meansi of
a pressed. ñt betweenV the bushing and the body;
Rotatably mounted within,y this` bushing is' a
spindle consisting of a- supporting cylindrical `5;
,
Situatedfwithíw the" smaller.Í aperture 2« is a
and has its end Within thev cam. groove Il, while
the exterior-of the plunger has an axially eX
tending slotr or keyway t6y into which projects the
inner end of a- setI screw I1 threaded through
the body, which.Á prevents the- plunger from> ro
tating therein;
»
'I'he forward end ofv the plunger has secured o
to it a fixed` jaw I-8~,_ and pivotally mountedona "o
pin I9 is a lever including a movable jaw 20
adapted to bear against the ñxedjaw. 'I'he jaws
are urged toward- each» other by a` tension
springY 2L»
0.5
The other end of the lever is formedt into a
bearing surface 2‘2‘Í arranged‘in the path of the
arcuatel cam. of. the spindle, and when engaged
by this cam is moved toward the` axis` of» the
device against the tensioncofthe spring, causing 4,0
the movable jaw to" separate from the ñxed jaw.
When- the spindleis rotated so« that the cam
surface of arcuate flange l-2» has- passed beyond
bearing sur-face 22, it» no longer holds'` the jaws
apart, but these are drawn togetheigas:y shown 45
in Figure 1, by the spring 2|.
The plunger is reciprocated-by» the-‘cam groove
acting upon the‘setfscrew I5».
A`A slotted cap` or coverF 23v is frictionally/ re
tained» upon the reducedend 2liÍ of the body to
enclose the‘plunger and rear partrof the'ja'ws.
The operation- of the device is as follows:
c
The shank. 1- is clutched tota»-` rotatable shaft,
vpreferably a flexible one,
sucht` asf shown ' in my
above mentioned. application, by ai clutch which V55r
2,113,962
2
also may be as shown therein, and the shaft set
in rotation.
The operator, using the body of
the device as a handle, manipulates it as de
sired, positioning the jaws in such a manner
that they may grip hairs which it is desired to
extract from a subject.
The rotation of the spindle causes the plunger
to reciprocate and the jaws to open and close.
It will be apparent that the cam slot and ar
sleeve, a spindle journalled therein, bearing
means locking the spindle against axial motion
relative the sleeve, a plunger slidable in the
sleeve, key means preventing rotation of the
plunger with respect to the sleeve, a movable
element carried by the plunger, resilient means
urging the element in one direction, a cam car
ried by the spindle and arranged to move said
element in the opposite direction, a second cam
carried by the spindle, and connections between 10
cuate cam surface are so related that the jaws
10 are separated by the cam surface of flange I2 . said cam and said plunger for
while the plunger is being projected toward the
left, as shown in the drawing, by cam l I so that
the jaws are permitted to close or come together
when at their most extended position, that illus
15
trated in Figure 2.
`
Thereafter, the jaws remain clamped upon
any object which they have seized, such as hair,
while the plunger is retracted, and when it has
6. A gripping device comprising a tubular
sleeve, a spindle journalled therein, an annular
groove in the spindle, a ñxed projection within 15
the sleeve extending into said annular groove, a
plunger slidable within the sleeve and in tele
20 reached its extreme retracted position, the jaws
scopio arrangement to both the sleeve and the
spindle, an inclined continuous groove in the
spindle, and a projection inside the plunger en
are again separated to release the article gripped.
The operator need only place the jaws at the
hairs it is desired to extract and the mechanism
grips, pulls, and releases them. The pressure
25 is at all times determined by the spring, so that
if several hairs are gripped simultaneously, the
pressure will not be suiiîcient to cut them, as
might be the case if the jaws were positively
closed.
30
reciprocating the
plunger.
tering said groove.
f
Similarly, should the jaws grip the skin of the
subject no damage can result. However, the jaws
should open only a relatively small distance so
that it will be difñcult to grip the skin.
The device is practically free from vibration
and
so greatly simplifies its manipulation.
35
While I have described the illustrated embodi
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7. A gripping device comprising a tubular
sleeve, a spindle journalled therein, an annular
groove in the spindle, a fixed projection within
the sleeve extending into said annular groove, 25
a plunger slidable within the sleeve- and in tele
scopic arrangement to both the sleeve and the
spindle, an inclined continuous groove in the
spindle, a projection inside the plunger entering
said groove, and an element pivoted to said 30
plunger having one end projecting beyond the
same andits other end received within the hol
low of the plunger, a cam carried by the spindle
positioned to engage said last `mentioned end of
the element.
35
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8. A gripping device comprising a tubular
sleeve, a spindle journalled therein, an annular
ment of my invention in some particularity, obvi
groove in the spindle, a ñxed projection within
ously many other embodiments, variations and the sleeve extending into said annular groove,
modifications will readily occur to those skilled a plunger slidable within the sleeve and in tele 40
scopic arrangement to both the sleeve and the
40 in this art, and I do not therefore limit myself
tothe precise details shown and described, but spindle, an inclined continuous groove »in the
claim as my invention all embodiments, modifi
spindle, a projection inside the plunger entering
cations and variations coming within the scope said groove, an element pivoted to said plunger
of the appended claims.
having one end vprojecting beyond the same and
I claim:
its other end received within the hollow of the
l. A power driven gripping device comprising plunger, a cam carried by the spindle positioned
a handle, a plunger slidable therein, means recip
to engage saidl last mentioned end of the ele
rocating said plunger in said handle, two rela
ment, and resilient means urging the element in
tively movable jaws carried by said plunger, re
silient means urging said jaws toward each other, one9. direction.
A gripping device comprising a tubular
and means separating said jaws during recipro
sleeve, a spindle journalled therein, an annular
cation in one direction. `
groove in the spindle, a fixed projection within
2. A gripping' device comprising a handle, a
rotatable spindle mounted therein and provided
55 with two cam surfaces, a plunger reciprocable in
the handle and provided with a pair of relatively
movable jaws, means connected to the plunger
engaging one of said cam surfaces, and means
associated with one of the jaws and engageable
60 by the other cam surface.
3. A gripping device comprising a handle, a
rotatable spindle mounted therein, a plunger re
ciprocable in the handle, a gripping jaw pivoted
to said plunger, a cam carried by said spindle
arranged to contact said jaw to rotate the same
65
about its pivot.
4. A gripping device comprising a handle, a
rotatable spindle mounted therein, a plunger re
ciprocable in the handle, a gripping jaw pivoted
70 to said plunger, a cam carried by said spindle
arranged to contact said jaw to rotate the same
about its pivot, and a fixed jaw carried by said
plunger, and resilient means moving said jaws
toward each other.
‘5. A gripping 'device »comprising a tubular
75
the sleeve extending into >said annular groove, a
plunger slidable within the sleeve and in tele- f
scopic arrangement to both the sleeve and the
spindle, an inclined continuous groove in the
spindle, a projection inside the plunger entering
said groove, an element pivoted to said plunger
having one end projecting beyond the same and 60
its other end‘received within the hollow of the
plunger, an arcuate cylindrical flange on the
spindle positioned to engage lsaid last mentioned
end of the element.
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65
l0. A gripping device comprising a tubular
sleeve, a spindle journalled therein, an annular
groove in the spindle, a fixed projection within
the sleeve extending into said annular groove, a
hollow plunger slidable within the sleeve and in 70
telescopic arrangement to both the sleeve and
the spindle, an inclined continuous groove in the
spindle, a projection inside the plunger entering
said groove, an element pivoted to said plunger
having one end projecting beyond the same and 75
2,113,962
`its other end received within the hollow of the
plunger, and a parti-cylindrical ilange on the
spindle positioned to engage said last mentioned
end of the element, and a cover frictionally
engaging the sleeve and enclosing the end of the
plunger.
11. A gripping device comprising a tubular
sleeve, a bushing secured therein, a spindle jour
nalled in the bushing, an annular groove in the
10 spindle, a projection extending into said annu
lar groove and ñxed to said sleeve, said spindle
having a shank adapted to be connected to a
rotating element, a cam groove in said spindle
15 vand an arcuate cylindrical cam on the end there
of, a plunger in telescopic engagement with the
interior of the sleeve and exterior of the spindle,
`means keying the plunger to the spindle, a pro
jection Within` the plunger engaging the ñrst
20 mentioned cam of the spindle, a fixed jaw se
cured to the plunger, a movable jaw pivoted to
ythe plunger, and a spring urging the movable
jaw toward the ñxed jaw, one end of the mov
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able jaw being positioned in the path of the ar
cuate cam.
12. VA `gripping device comprising a tubular
sleeve, a bushing secured therein, a spindle jour
nalled in the bushing, an annular groove in the
spindle, a projection extending into said annu
lar groove and iixed to said sleeve, said spindle
having a shank adapted to be connected to a
rotating element, a cam groove in the said spin
dle and an arcuate cylindrical cam on the end
thereof, a plunger in telescopic engagement with
the interior of the sleeve and exterior of the
spindle, means keying the plunger to the spindle,
a projection Within the plunger engaging the
ñrst mentioned cam of the spindle, a fixed jaw
secured >to the plunger, a movable jaw pivoted
to the plunger, a spring urging the movable jaw
toward the iixed jaw, one end of the movable
jaw being positioned in the path of the arcuate
cam, and a cover frictionally secured to the
sleeve enclosing the -plunger and provided with
an aperture through which the jaws project.
VINCENT J. MOIR.
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