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Патент USA US3075295

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Jan. 29, 1963
J. |_. DESJARDINS ETAL
CAN OPENERS
3,075,285
_
Filed Aug. 10, 1960
Robert E Kenn/son,
> John L Desybrz?hs,
.
lA/VENTOR
A TTORNE Y
United States Patent 0 "we
3,075,285
Patented Jan. 29, 1963
1
2
3,075,285
ing the present invention with portions thereof shown in
section in the interest of clarity;
CAN OPENERS
John L. Desjardins and Robert E. Kennison, Burlington,
Vt., assignors to Edlund Company Inc., Burlington,
' Vt., a corporation of Vermont
Filed Aug. 10, 1960, Ser. No. 48,695
6 ‘Claims. (Cl. 30-4)
FIGURE 2 is a vertical‘ sectional view of the can
opener, the view being taken on line 2—2 of FIGURE 1;
FIGURE 3 is a front view of the can opener showing
the feed and cutting wheels and the can guides asso
ciated therewith;
FIGURE 4 is a fragmentary view, partly in section,
showing the position of the cutting wheel and feed wheel
This invention relates broadly to can openers and more 10 prior to the insertion of can between said wheels; and,
FIGURE 5 is a side elevational view showing a sup
port to which the can opener of the present invention may
In many instances the type of power driven can opener
be attached.
'
_
particularly to power driven type of can openers having
rotary feeding and cutting wheels.
as typi?ed by the prior art has utilized a rather heavy base
Referring to FIGURES 1 and 2 of the drawing there
member or a support to which the opener is attached so 15 is shown a housing 10 in which is disposed a suitable elec
that its usability was restricted to a certain spot or area.
tric motor, not shown, for supplying the necessary power
While such an arrangement did in many instances con
to operate the can opener of the present invention. The
stitute a great improvement over the use of a conventional
housing 10 has depending therefrom a pistol-type hand
hand-operated can opener it did not completely meet the
grip 11 which is provided with a pivotally actuatedtrigger
present day needs. The present day usage of electricl 20 switch 12 for controlling the starting and stopping of the
or power driven implements or appliances has resulted
in said implements or appliances being designed for porta
bility thereby enabling them to be used in many different
electric motor. The forward end of the housing 10 is
disposed in abutting engagement with the rear end of a
housing or casing 14 in which is'disposed the cutting and
places in a single establishment.
feed wheels of the can opener and the gear reduction unit
Thus the use of such implements or appliances due 25 of the feed wheel. The housing 10 is formed with two
to their being portable as distinguished from the prior
concepts of providing a stand, base or support for the
usage of such power driven appliances has necessitated
the redesigning of certain of the appliances. Although
such efforts have been directed heretofore in the fabrica
tion of power driven can openers of the portable type
they have not, for one reason or another, proven to be
entirely satisfactory.
It is therefore one of the objects of the present inven
tion to provide a portable power driven can opener having
a rotatable feed wheel for engaging and holding a can in
conjunction with a rotary cutting wheel.
Another object is to provide a portable electrical can
opener having a rotatably driven feed wheel and a rotat
able cutting wheel the axis of which is offset with respect
to the axis of the feed wheel for retaining the edge of a can in engagement with the feed wheel. _
Another object is to provide a portable electric can
opener having rotary feed and cutting wheels with the
cutting wheel having a spring associated therewith for
urging the cutting wheel towards the feed wheel to insure
constant engagement of the rim of a can with the feed
diametrically disposed ?ange members 15 at the forward
end thereof which are secured to complementary mem
bers 16 at the rear end of casing 14 by suitable screws 17
so that casing 14and housing 10 can be manipulated and
carried aboutas a single unit by the handle 11.
As shown in FIGURE 2 the casing 14 has mounted
therein a suitable speed reduction gear unit 18 which is
connected to and driven by the drive shaft 19 of the
electric motor disposed within housing 10. The speed
reduction gear unit 18 is provided with a drive shaft 21
which extends towards the front or forward end of the
casing‘ 14; The forward end or front of the casing 14
is open and de?ned'by two wall members 22 and 23 that
are disposed in spaced parallel relation to one another and
which extend upwardly and rearwardly of the casing 14.
The forward end’of the casing 14 has a wall or partition
24 formed integrally with and interposed between the wallv
members 22 and 23. The wall or partition 24 extends
upwardly between the wall members 22 and 23 only a
sufficient distance to provide a bearing support 25 for
the end of the drive shaft 18 which extends therethrough.
The end portion of the ‘drive shaft 18 has‘ secured
wheel.
A further object is to provide a portable electric can
thereto a feed wheel 26 ‘which is provided with a serrated
or’ toothed peripheral surface 27 for engaging a rim or
opener having rotary feed and cutting wheels angularly 50 head of a can to be opened. The feed wheel 26 has its
disposed with respect to one another so that the cutting
outer or front faceformed with a slight beveled surface ~
wheel urges a canrim into engagement with the feed
28 which slopes from the center of the wheel outwardly
wheel while the inner face of the can rim engages and
andv downwardly towards the peripheral surface ‘27. The .
polishes the surface of the cutting wheel.
_
bottom-"or lowermost edge or' surface 31 of the casing‘ 14
A still further object is to provide a portable electric 55 projects outwardly beyond the feed wheel 26 and then
can opener having a rotatable cutting wheel provided with
slopes’ upwardly to merge with the front or forward edge
a beveled front face for engaging a can cover and causing
of the wall members 22 and 23. The upwardly and
same to be raised prior to its complete severance from the
rearwardly inclined front or forward edges of the wall
can body.
members22 and 23 form in conjunction with the partition
Still other objects are to provide a portable electric 60 24 a recess 32 for the feed wheel 26 but due to the rear- _
can opener which is compact and relatively light in weight,
ward inclination of theforward edges of the members 22
positive in operation and which is economical of manu
and 23 vthe uppermost portion of the feed wheel 26 is
facture.
disposed in a plane normal the- plane of the. lower edge 7
Other objects and advantages, more or less ancillary to
31 offthe casing.14. The feed wheel 26 is rotatably
the foregoing in the manner in which all of the various 65
objects are utilized, will appear in the following descrip
tion which, when considered in connection with the ac
companying drawing, sets forth the preferred embodiment
driven by the electric motor through the drive shaft 19;,
and speed reduction gear unit 18 and drive shaft 21 and I
said feed wheel is adapted to rotate about the longitudinal ,
axis of the casing 14 and housing 10.
of the invention.
' Referring to the drawing, wherein the preferred embodi 70 _ The side wall members 22 and 23 have pivotally
mounted therebetween superjacent the feed wheel 26 a
ment of the invention is illustrated:
block member 33 which has depending from the rear por
FIGURE 1 is a top plan view of a can opener embody
3,075,285
4..
tion thereof a yoke 34 that slidably receives and engages
the handle, an arm 49 which projects from the rear or
back face of the block member 33 in a plane substan
the drive shaft 21. The forward face of the block mem
ber 33 is provided with a boss 35 which is offset slightly
tially normal to the yoke member 34. The movement
of the handle 47 about its pivot 46, in a clockwise manner
as regards a plane normal to said block. The boss 35
has a disc or wheel 37 that is formed with a peripheral
when viewing FIGURE 2, causes the cam 48 to engage
cutting edge and which is secured to said boss by means
the outer end of arm 49 and move said arm and block
of a screw 38 which has a relatively smooth shank portion
member 33 in a clockwise direction about their pivotal
mounting between the side members 22 and '23 to cause
the yoke 34 to compress the spring 43 towards the parti
adjacent its head to permit the cutting wheel to have a
free rotative movement with respect to the boss.
The
cutting wheel 37 has on its front face adjacent its periph~
eralmcutti'ng edge a slightly beveled surface 39, FIGURE
10 tion 24 and at the same time move the cutting disc or
3. The beveled surface 39 is adapted to engage the top
with the forward face of the feed wheel 26. Such a
movement of the handle 47 and cutting wheel 37 enables
or lid of a can during the cutting or severing operation
to cause the portion of the can lid diametrically opposite
the cutting wheel; to be raised or elevated just prior to
complete severance so that the lid may be grasped by
an operator and thus prevent it from falling into the con
tents of the can. The cutting wheel 37 has formed on
its rear or back face thereof a tapered surface 40 which
is inclined from the peripheral cutting edge towards the *
axis of rotation of said cutting wheel and which tapered
surface terminates in an annular groove or recess 41 which
is designed to receive the lip of a can during the cutting
operation. The tapered surface 40 and recess 41 pro
vided on the cutting wheel 37 are designed to engage
the rim or bead formed on the lid or cover of a can for
urging and holding the outer face of the can and the
rim or head thereon in engagement with the feed wheel
26 so that the can will be rotatably driven by the feed
wheel during the cutting operation.
As shown in FIGURE 1 the boss 35 is slightly offset
with respect to the block member 33 so that the longi
tudinal axis of the boss is not in a plane normal to said
block. The cutting wheel 37 is so mounted on the boss
35 by the screw 38 that its axis of rotation coincides
with the longitudinal axis of the boss, thus the axis of
rotation of the cutting wheel is offset both vertically and
horizontally with respect to the axis of rotation of the
feed wheel 26. The angular relationship between the 40
cutting wheel axis and the axis of the feed wheel is ap
proximately 7 degrees with the axis of the cutting wheel
being olfset to the left of the feed wheel axis as clearly
shown in FIGURE 1. The angular relationship of the
cutting wheel 37 with respect to the feed wheel 26 tends
to aid and abet the proper positioning and retention of
the can with respect to the feed wheel during the cutting
operation as well as enabling the tapered surface 40 and
recess 41 on the cutting wheel 37 to continuously engage
the can rim or bead for urging same into engagement
with the feed wheel. In addition the angular relationship
of the cutting wheel 37 with respect to the feed wheel
26 is so designed that during the cutting or severing opera
tion of a can lid the inside edge portion of the can rim
continuously engages and Wipes the rear or back face
of the cutting edge of the cutting wheel as well as a
portion of the tapered surface 40 which results in the
cutting wheel being polished and sharpened by the can
surface.
As shown in FIGURES 2 and 4 a coiled compressioned
spring 43 is loosely mounted on the drive shaft 21 between
suitable washers 44 that are disposed in abutting engage
wheel 37 outwardly and upwardly from its engagement
an operator to insert the rim or bead of a can between
the cutting wheel and feed wheel or to remove a can
therefrom. The wall members 22 and 23 have a bar
53 mounted therein contiguous to the bosses 45 which
limits the movement of the handle 47 in a counterclock
wise direction, FIGURE 2. The handle 47 in its normal
or inoperative position projects upwardly beyond the cas
ing 14 and upon being moved downwardly towards the
housing 10 cams the arm 49, block member 33 and yoke
34 about their pivot point causing the cutting wheel 37
to be elevated with respect to the feed wheel 26 and at
the same time compressing the spring 43 so that upon
releasing the handle 47 the spring causes the yoke block
member, arm and handle to return to their initial or
normal positions and at the same time moving the cutting
wheel 37 into engagement with the top of a can and pull
the can towards the feed wheel so that the rim or head
of the can will be brought into and retained in engage
ment with the surface 27 of the feed wheel.
The forward end of the casing 14 adjacent the front
edge or face of the wall members 22 and 23 is formed
with recesses which are adapted to have can guides 52
and 53, FIGURES 1 and 3, mounted therein by screws
54.
The can guides are disposed on each side of the
casing 14 in diametric relation to one another and they
are of sufficient size to embrace at least the area of the
feed wheel 26 that is overlapped by the cutting disc 37.
The guide member 53 positioned on the feed out side
of the casing 14 is formed with a forwardly extending
?nger or segment 55 under and against which the rim
or bead of a can is adapted to rotate so as to insure
the retention of the can opener in a level position with
respect to the can that is being opened. Thus if the can
opener should have a tendency to rotate during the cut
ting operation, as a result of the running torque of the
feed wheel and the resistance of the can, the ?nger 55
will retain the opener in proper level position to insure
the retention of the feed wheel 26 in engagement with
the can rim. The tapered surface 40 of the cutting wheel
37 also cooperates with the ?nger or segment 55 in smooth
ing down the top edge or rim of the can during the cut
ting operation. The angular displacement of the cutting
wheel 37 with respect to the feed wheel 26 results in the
tapered surface 40 and recess 41 engaging the rim or
head of a can to guide and retain the can rim or bead
in engagement with the can guide 52 and also in keeping
the can rim or head disposed over the feed wheel and in
ment with the partition 24 and yoke 34. The spring 43
engagement with the toothed surface 27. The outwardly
projecting surface or edge 31 of the casing 14 is designed
continuously tends to urge the yoke 34 away from the
to engage the body of a can to retain same in the proper
partition 24 and about its pivotal mounting between the
vertical position for the opening of the can and the ?nger
wall members 22 and 23 which movement results in the
55 on the guide 53 also aids in retaining the can in a
cutting wheel 37 being held in engagement with the feed
vertical position.
wheel 26 or with a can cover and the inside of the can
As shown in FIGURE 2 the casing 14 may have a
rim when a cover is being removed. The wall members
?exible spring-like arm 58 affixed thereto which arm has
22 and 23 have formed on the inner faces thereof, adjacent 70 mounted thereon by a suitable bolt 59 a magnet 60. The
their upper edges, a boss or projection 45 which are
magnet 60, due to the ?exibility of the arm 58, may be
adapted to receive a rod 46 upon which the lower end
moved into engagement with the top or lid of a can prior
of a handle member 47 is pivotally mounted. The lower
to commencing the cutting operation so that the magnet
end of the handle 47 is formed with an enlarged segment
can hold or retain the cover after it has been severed
or cam member 48 that engages, upon the movement of 75 from the can. The bolt 59 is freely mounted in the arm
3,075,285
58 so that the magnet 60 is capable of rotative movement
with respect to the arm.
In the operation of the can opener of the present in
vention the motor is connected to a suitable source of
electric current and the handle 47 is then moved down
wardly towards the housing 10 to permit the insertion of
the rim or head of a can between the feed wheel 26
6
said cutting wheel being offset both vertically and hori
zontally from the axis of rotation of said feed wheel, the
axis of rotation of said cutting wheel and being forwardly
convergent with the horizontal and vertical planes through
the feed wheel axis to insure the engagement and reten
tion by said cutting wheel of the rim of a can with said
feed wheel, guide means mounted on said wall members
and cutting disc 37 after which the handle is released.
in a plane substantially normal to said partition for guid
the force of the spring 43 holds the cutting wheel 37
said housing adjacent said open front end, said partition
ing the rim of a can into engagement with said feed wheel,
The spring 43 causes the cutting disc to move into engage
ment with the top of the can adjacent the rim or head 10 an arm associated with said cutting wheel, a handle piv
otally mounted in said ‘wall members, a cam element on
of the can while at the same time causing the can rim
said handle engageable with said arm upon the rotation
to be brought into engagement with the surface 27 of
of said handle for pivotally moving said cutting wheel with
the feed wheel 26. The spring also causes the yoke 34
respect to said feed wheel to facilitate the positioning of
and arm 49 to return to their initial position which move
ment causes the handle 47 to move about its pivot rod 46 15 the rim of a can in engagement with said feed wheel, a
yoke member formed integrally with said block, a spring
until it engages the stop bar 50. The movement of the
interposed between said yoke member and partition for
cutting disc 37 towards the feed wheel 26 and into en
moving said block about its pivot and urging said cutting
gagement with the top of the can causes the can rim
wheel into engagement with the cover of the can for re
to also be moved in engagement with the guide member
taining the rim of the can in engagement with said guide
‘52. This movement of the cutting wheel into engagement 20 means and feed wheel.
with the can top is due to the action of the spring 43
2. A can opener comprising a housing having an open
in urging the yoke 34 to return to its initial position and
front end de?ned by spaced wall members, a partition in
in engagement with the can top. The head or rim of the
being offset ‘with respect to the open end of said housing
can is at this time being held in engagement with the 25 to de?ne a recess, a horizontal rotatable shaft, extending
toothed surface 27 of the feed wheel 26 so that upon
through said partition, power means carried by said hous
actuation of the trigger switch 12 the electric motor will
be energized and the feed wheel 26 rotatably driven.
Upon the starting of the electric motor and the rotation
ing and operatively connected to one end of said shaft,
of the feed wheel, which results in the can starting to
rotate, the cutting disc 37 will immediately puncture the
a can‘advancing feed wheel mounted on the other end of
said shaft within said recess, a block pivotally mounted
in said wall members superjacent said partition, a ro
tatable cutting wheel carried by said block with a portion
can lid or cover and continue to sever the lid from the
of said cutting wheel overlying and engaging a segment
can upon the continued rotation of the can. The punc
turing of the can lid and the commencement of the sever
of said feed wheel, guide means mounted on said side
walls and adapted to lie in the plane of said segment of
ing of the lid are practically instantaneous with the actua
tion of the trigger switch 12. As the lid is severed from
said feed Wheel, said cutting wheel and said feed wheel
being adapted to receive between the, overlying portions
the can the bevelled surface 39 on the cutting disc 37
thereof a rim of a can with the peripheral surface of the
causes the portion of the lid opposite the cutting wheel
feed wheel engaging the outer surface of the can rim and
‘the cutting wheel engaging the inner surface of the can
rim, a depending yoke member on said block adapted to
overlie said shaft, a coil spring positioned on said shaft
and engaging said partition and yoke member for urging '
said cutting wheel into engagement with the can and the
to be raised or elevated just prior to complete severance
so that the severed lid may be grasped by the operator
and removed.
The can opener of the present invention may be mount
ed upon a support or stand as shown in FIGURE 5 where
in the forward portion of the casing 14 is mounted in an
rim of the can intoengagement with said guide means and
arcuate shaped cradle member 62, by suitable bolts 63. 45 feed wheel, said cutting ‘wheel being provided with a
beveled surface adjacent its peripheral edge for engaging
The cradle or support member 62 is provided with a de
the lid of the can to raise a portion of said lid just prior
pending rod-like member 64 which is slidably disposed
in a bracket member 65 that is mounted on a suitable
support 66 by screws 67. The rod member 64 is formed
with a plurality of spaced apertures 68 through which a
suitable pin, not shown, is adapted to extend for adjustably
positioning the can opener on the support 66.
Such an
arrangement provides a ready support for the can opener
so that it can be employed as a portable unit or as one
that is mounted upon a stationary support.
Although the foregoing description is necessarily of
to its complete severance from the can.
3. A can opener comprising a housing having an open
end de?ned by spaced wall members, a partition in said
housing adjacent said open end, said partition being olfset
with respect to the open end of said housing to de?ne
a recess, a rotatable shaft extending through said parti
tion, power means carried by said housing and operatively
55 connected to one end of said shaft, a can advancing feed
wheel mounted on said shaft within said recess, a .block
a detailed character, in order that the invention may be
completely set forth, it is to be understood that the
speci?c terminology is not intended to be rmtrictive or
pivotally mounted in said wall members superjacent said
partition, a rotatable cutting wheel carried by said block
with a portion of said cutting wheel overlying and engag
rotatable shaft extending through said partition, power
means carried by said housing and operatively connected
of the can rim, a depending yoke member on said block
con?ning, and various re-arrangements of parts and modi 60 ing a segment of said feed wheel, guide means mounted
on said side walls and adapted to lie in the plane of said
?cations of detail may be resorted to without departing
segment of said feed wheel, said cutting wheel and said
from the scope or spirit of the invention as claimed herein.
feed wheel being adapted to receive between the over
We claim:
lying portions thereof a rim of a can with the peripheral
1. A can opener comprising a housing having an open
front end de?ned by spaced wall members, a partition pro 65 surface of the feed wheel engaging the outer surface of the
can rim and the cutting wheel engaging the inner surface
vided in said housing adjacent the open end, a horizontal
adapted to overlie said shaft, a coil spring positioned on
said shaft and engaging said partition and yoke member
mounted on said shaft adjacent the open end of said 70 for urging said cutting wheel into engagement with the can
and the rim of the can into engagement with said guide
housing, a block pivotally mounted in said Wall members
means and feed wheel, one of said guide means having
superjacent said partition, a rotatable cutting wheel car
a forwardly projecting segment adapted to engage the
ried by said block, said cutting wheel coacting with said
to one end of said shaft, a can advancing feed wheel
rim of a can to retain the can opener in a level position
feed wheel for receiving therebetween the rim of a can
to sever the cover from the can, the axis of rotation of 75 relative to the can during the severing of the cover from
3,075,285
8
the can, the bottom portion of said wall members de?ning
a forwardly projecting lower edge adapted to engage a
can for supporting said can in proper position with re
spect to said feed wheel.
4. A can opener comprising a housing, said housing
including a pair of wall members disposed in spaced par
allel relation and arranged to project above the housing,
a partition provided in said housing, a shaft rotatably
and move said cutting wheel with respect to said feed
wheel to facilitate the positioning of the rim of a can in
engagement with said feed wheel.
6. A portable can opener comprising a casing having
an open end de?ned by spaced wall members, a motor
‘containing housing secured to the other end of said casing,
a depending handle secured to said housing, a switch piv
otally mounted in said handle, a partition in said casing
supported in said partition, and adapted to project from
adjacent said open end, a speed reductiongear unit mount
opposite faces of the partition, a can advancing feed wheel 10 ed in said casing and operatively connected to the motor
mounted on said shaft adjacent one face of said partition,
housing, a drive shaft connected to said gear unit and ro
a coil spring positioned on said shaft and engageable with
tatably supported in said partition, a can advancing feed
the other face of said partition, a block pivotally mount
wheel mounted on said shaft, a block member pivotally
ed in said wall members superjacent said partition, a boss
mounted in said wall members superjacent said partition,
projecting from one face of said block, an arm projecting 15 a boss provided on said block member, a cutting wheel
rotatably mounted on said boss with a portion of said
from another face of said block, said boss and arm pro
cutting wheel overlying and engaging a segment of said
jecting from said block in opposed relation to one another,
a can cutting wheel rotatably mounted on said boss and
feed wheel, guide means mounted on said side walls and
adapted to lie in the plane of said segment of said feed
adapted to engage said feed wheel in its inoperative state,
a yoke member provided on said block engageable with 20 Wheel, said cutting ‘wheel and feed Wheel being adapted
to receive between the overlying portions thereof a rim
said coil spring for moving said block about its pivot and
of a can with the peripheral surface of the feed wheel
urging said cutting wheel toward and into engagement
engaging the outer surface of the can rim and the cutting
with the feed wheel, power means connected to said shaft
wheel engaging the inner surface of the can, the axis of
for rotating said feed Wheel, and means pivotally mounted
between said wall members and engageable with said arm 25 rotation of said cutting wheel ‘being olfset both vertically
and horizontally from the axis of rotation of said feed
for moving said block about its pivot contemporaneous
wheel, the axis of rotation of said cutting wheel being
with the moving of the cutting wheel away from said
forwardly convergent with the horizontal and vertical
feed wheel to permit the positioning of a can with respect
planes through the feed wheel axis to insure the engage
to the feed wheel.
5. A portable can opener comprising a casing having an 30' ment of the feed wheel with the rim of a can, a depending
yoke member on said block member adapted to overlie
open end de?ned by spaced wall members, a motor con
said drive shaft adjacent said gear unit, a coil spring posi
taining housing secured to the other end of said casing, a
tioned on said drive shaft and engageable with said yoke
depending handle secured to said housing, a switch piv
member and partition for urging said block member about
otally mounted in said handle, a partition in said casing
adjacent said open end, a speed reduction gear unit mount 35 its pivot and the cutting wheel into engagement with the
rim of a can, an arm on said block member, a handle
ed in said casing and operatively connected to the motor
housing, a drive shaft connected to said gear unit and
rotatably supported in said partition, a can advancing feed
pivotally mounted in said wall members, a cam element
on said handle engageable with said arm upon the move
ment of the handle towards said housing to compress said
wheel mounted on said shaft, a block member pivotally
mounted in said wall members superjacent said partition, 40 spring and move said cutting wheel with respect to said
feed wheel to facilitate the positioning of the rim of a
a boss provided on said block member, a cutting wheel '
can in engagement with said feed wheel, a cradle member
rotatably mounted on said boss with a portion of said cut
engageable with said casing, a rod secured to said cradle
ting wheel overlying and engaging a segment of said feed
member and slida-bly adjustable in a bracket member,
wheel, guide means mounted on said side walls and adapt
said bracket member being a?ixed to a support for sup
ed to lie in the plane of said segment of said feed wheel,
porting said can opener.
said cutting wheel and feed wheel being adapted to re
ceive between the overlying portions thereof a rim of a
References Cited in the ?le of this patent
can with the peripheral surface of the feed wheel engaging
the outer surface» of the can rim and the cutting wheel
UNITED STATES PATENTS
engaging the inner surface of the can, the axis of rotation *
of said cutting wheel being offset both vertically and
horizontally from the axis of rotation of said feed wheel,
the axis of rotation of said cutting wheel being forwardly
convergent with the horizontal and vertical planes through
the feed wheel axis to insure the engagement of the feed
wheel with the rim of a can, a depending yoke member
on said block member adapted to overlie said drive shaft
adjacent said gear unit, a coil spring positioned on said
drive shaft and engageable with said yoke member and
partition for urging said block member about its pivot 60
and the cutting wheel into engagement with the rim of
a can, an armson said bloc-k member, a handle pivotally
mounted in said wall members, a cam element on said
handle engageable with said arm upon the movement of
the handle towards said housing to compress said spring 65
2,278,731
2,361,561
2,582,504
2,583,034
2,592,937
2,595,162
2,609,599‘
2,618,848
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Olschewski ____________ __ Apr. 7,
Mueller et a1 ___________ _._ Oct. 31,
Reed _________________ __ Ian. 15,
Wibling ______________ _.. Jan. 22,
McLean ______________ __ Apr. 15,
Nessler ______________ __ Apr. 29,
Wilson _______________ __ Sept. 9,
Johnson _____________ __ Nov. 25,
Sykes et al ____________ __ Mar. 11,
Bristol _______________ __ Apr. 28,
1942
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1958
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FOREIGN PATENTS
274,531
436,634
Italy _________________ __ May 23, 1930
Italy ________________ __ June 14, 1948
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