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Патент USA US3067520

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Dec. 11, 1962
G. w. KEAN
3,067,510
CAN OPENER
Filed June 9, 1961
2 Sheets-Sheet 1
INVENTOR.
G. W. KEAN
BY
M/W
Dec. 11, 1962
G. W. KEAN
3,067,510
CAN OPENER
2 Sheeté-Sheet 2
Filed June 9, 1961
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36
INVENTOR.
6. W. KEAN
Arronupy
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United States Patent Office
3,967,510
Patented Dec. 11, lose
2
1
pressure su?icient to force the plunger 16 and cutting
wheel 10 into cutting contact with the can W being
3,067,510
opened.
CAN QPENER
George W. Kean, Granhy, Conn., assignor of ?fty percent
To effect this forward movement of the actuating mem
ber 20, the plunger 16 and cutting wheel 10, a pair of
to Angelo J. Roncari, East Granby, Conn, Albert J.
Roncari and Raymond A. Roncari, both of Windsor
Locks, Conn.
Filed June 9, 1961, Ser. No. 115,987
5 Claims. (Cl. 30-9)
lever arms 22 are provided on opposite sides of the arm
14 which have their forward ends connected to a trans
verse rod or bolt 24.
The rear ends of these lever arms
22 are pivotally attached to the lower ends of a bifurcated
lever 26 by short pivot pins 27. This bifurcated lever
This invention relates to can openers and more par
ticularly to a form of wall mounted can opener shown
26 in turn has the lower ends of its arms pivotally con
nected to a transverse rod 23 on a ?xed axis within the
and described in my co-pending application Ser. No.
737,639, ?led May 26, 1958, now Patent No. 2,997,786,
arm 14. The pivot for bifurcated lever 26 and the pivotal
connection 27 between the horizontal levers 22 and the
15 bifurcated lever 26 are slightly out of alignment with
each other when the cutting wheel 10 and feed wheel
applying means for forcing the cutting wheel and feeding
12 are separated. By movement of the bifurcated lever
wheel, shown and described in the above referred to ap
26 from the position shown in FIG. 2 in full lines to
plication, toward each other during the operation of
the position shown in FIG. 1, the levers 22 are brought
opening a can.
into horizontal position as shown in FIG. 1 to slightly
20
An object of primary importance of the invention is
move forward their forward ends. The pivotal con
that springs of the Belleville type are housed within the
nection 27 for the members 22 will then be slightly for
arm of the opener shown in the above referred to appli
ward of the pivot 28 and in alignment therewith. This
granted Aug. 29, 1961.
Speci?cally the invention relates to improved pressure
cation, the pressure of the cutting wheel against the feed
forces the actuating member 20 slidably forward within
wheel being applied by a manually operated lever to com
the plunger 16 to compress the Belleville springs 18 and
press the springs to a high compressive force by very 25 force the plunger 16' and cutting wheel 10 into operative
slight forward movement of the plunger engaging the rear
position toward the feed wheel 12.
spring of the series and to which plunger the cutting
In removing a can W from the opener after the cutting
wheel is attached.
operation has been completed, it is desirable to partially
With the above and other objects in view, the inven
withdraw the cutting wheel 10 from full cutting depth but
tion may include the features of construction and oper 30 to leave this wheel still slightly in engagement with the
ation set forth in the following speci?cation and illus
lid or cover of the can so that the can cover with its
trated in the accompanying drawings.
outer bead cut through may be pried loose from the
In the accompanying drawings annexed hereto and
body of the can.
forming a part of this speci?cation, I have shown the in
In order to limit the retrograde movement of the cut
vention embodied in a manually operated wall mounted 35 ting wheel 10 and retain the wheel in an intermediate
opener, but it will be understood that the invention can
be otherwise embodied and that the drawings are not to
be construed as de?ning or limiting the scope of the in
position while the can W is being removed from be
tween the cutting and feed wheels, a lever 30 is pivoted
as shown most clearly in FIG. 2 at its midpoint to an in
vention, the claims appended to this speci?cation being 40 termediate point of the bifurcated lever 26. Preferably
relied upon for that purpose.
In the drawings:
FIG. 1 is a side elevation of a complete opener with
a can to be opened in position for opening and with the
cutting wheel in its forward and cutting position;
FIG. 2 is a view similar to FIG. 1 with the cutting
and pressure wheels in their separated position;
a small weight 32 may be provided at the lower end of
this pivotally mounted lever 30. A short distance above
thIeGweight a hooked recess 34 is formed also as shown in
F
45
. 2.
After an opening operation has been completed, the
bifurcated lever 26 is raised from its horizontal position
by its outer end formed as a handle to an oblique posi
FIG. 3 is a horizontal central sectional view of the
tion shown in dot and dash outline in FIG. 2. In this
opener shown in FIGS. 1 and 2; and
oblique position the hooked recess 34- engages a nut or
FIG. 4 is a transverse section of the arm or bracket, 50 a projection at the outer end of the transverse rod 24
the section being taken on the plane of line 4——4 in
and prevents further movement upward of the bifurcated
FIG. 2.
lever 26. In this slightly separated position of the cutting
In the above-mentioned drawings there has been shown
and feed wheels 16 and 12, the can cover or lid can
but one embodiment of the invention which is now
readily be removed from the body of the can W.
deemed preferable, but it is to be understood that changes
and modi?cations may be made within the scope of the
appended claims without departing from the spirit of
1.
The pressure or feed wheel 12 is mounted on a ?xed
axis for rotation at the outer end of the arm 14,. This
wheel 12 is mounted as shown in FIG. 3 on the lower
the invention.
end of a shaft 38 which has on its upper end a bevel gear
Referring more in detail to the ?gures of the drawing,
40 in mesh with another bevel gear (not shown) mounted
and ?rst to FIG. 2, the feeding wheel 12 and cutting 60 on a horizontal shaft 42 at its inner end. A handle 44
wheel 10 are mounted at the outer end of an arm 14 in
every way similar to the corresponding parts shown and
described in the above referred to application.
The cutting wheel 10 is rotatably mounted on and at
at the outer end of this horizontal shaft 42 permits ro
tation of the bevel gears shaft 38 and wheel 12 to rotate
the can W while the cutting wheel 12 is pressed for
ward to its cutting position. As this part of the device
one side of a plunger 16 slidable within the arm 14. The 65
is similar in every way to the corresponding parts de
rear portion of this plunger is recessed and within the
scribed in my above referred to co-pending application,
further description is not thought to be necessary for
in opposed relation to each other and forming a resilient
a full understanding.
connection between the plunger and an actuating member
In order to facilitate guiding a can W to be opened
20 slidably mounted within the rear portion of the 70
into position with its upper rim disposed between the
plunger 16. By means of these Belleville type springs
wheels 10 and 12, a back rest 50 may be provided at the
18 a relatively short movement forward of the actuating
outer end of a bracket arm 52. At its rear end the
member 20 within the plunger 16 builds up substantial
recess are housed a series of dished washers 18 positioned
3.
3,067,510
bracket arm 52 may be secured in any suitable manner
to the base 14*. The can W is placed with its cylindrical
surface in contact with the lateral edges of this back
rest. The can is then raised'until its upper rim is disposed
between wheels 16 and 12. Wheel 1% is then forced for
ward by lever 26 until the surfaces of the upper rim are
pinched by wheels 10 and 12.
I claim as my invention:
the periphery of a can disposed between the adjacent por
tions of said wheels, means to move said plunger and
cutting wheel toward said feed Wheel, and resilient means
comprising a series of Belleville springs interposed in the
means to move said cutting wheel toward said feed
wheel.
4. A can opener comprising in combination a body
member, a rotatable cutting wheel, a rotatable feed wheel,
1. A can opener comprising in combination, a body
rotation of said cutting and feed wheels serving to cut
member, a rotatable cutting wheel, a rotatable feed it) a groove in the periphery of a can disposed between the
wheel, rotation of said cutting and feed wheels serving to
cut a groove in the periphery of a can disposed between
the adjacent portions of said Wheels, means to move
one of said wheels, toward the other, and resilient means
comprising a series of Belleville springs interposed in
adjacent portions of said wheels, manually operated lever
means to move one of said wheels toward the other,
resilient means interposed in the means to move one of
said wheels toward the other, and means for limiting the
retrograde movement of said movable wheel to an inter
the means to move one of said wheels toward the other.
mediate position.
2. A can opener comprising in combination a body
member, a rotatable cutting wheel, a rotatable feed
wheel, rotation of said cutting and feed Wheels serving '
to cut a groove in the periphery of a can disposed be
5. A can opener comprising in combination a body
member, a rotatable cutting wheel, a rotatable feed
tween the adjacent portions of said wheels, means to
move one of said wheels toward the other, and resilient
means comprising a series of Belleville springs disposed
in opposed relation to each other interposed in the means
to move one of said wheels toward the other.
3. A can opener comprising in combination a body
member, a rotatable cutting wheel, a plunger slidable
within said body members and on which said cutting
wheel is supported, a rotatable feed wheel, rotation of
said cutting and feed wheels serving to cut a groove in 30
_
wheel, rotation of said cutting and feed wheels serving to
cut a groove in the periphery of a can disposed between
the adjacent portions of said wheels, a manually operated
lever to move one of said wheels toward the other, re
silient means interposed in the means to move one of
said wheels toward the other, and means provided on
said manually operated lever to limit the retrograde
movement of said cutting wheel to an intermediate posi
tion.
No references cited.~
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