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Патент USA US2120047

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June 7, 193s.
,
'
H. P. TURNER
2,120,041 ' *
CAN COVER AND FASTENING MEANS THEREFOR
Filed may is, 1935
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2,120,047
Patented June 7, 1938
UNITED STATES PATENT OFFICE
2,120,047
CAN COVER AND’ FASTENING MEANS
THEREFOR
Henry P. Turner, Chicago, Ill.; Drovers Trust &
Sav. Bank executor of said Henry P. Turner,
deceased
Application May 16, 1935, Serial No. 21,817
12 Claims. (Cl. 220-557)
The present invention relates to covers and
fastening means therefor and particularly to a
can cover which is entirely removable from the
can although not necessarily so, and to a fas
5 tening means which holds the can cover in
place ?rmly in order‘ to ef?ciently seal the con
tents of the can when the cover is in place.
This invention is particularly designed for use
in the home canning of food stuffs and the like
10. and contemplates the use of an open-mouthed
can to which my invention is applied.
is automatically locked in place against acci~
dental displacement after the parts of the fas-v
tening means have been moved to their operative
positions.
Another object of this invention is to provide 5
means for determining when the relatively mov
able parts have reached their intended operative
positions and for automatically stopping their
relative movement at that position.
Another object of this invention is in the pro- 10,
The
vision of a novel form of gasket which may be
cover and fastening means therefor are quickly
and easily applied to cans in which food has
previously been canned in a factory and which
15. has been opened by one of the numerous modern
can openers which open such a can and leave
a smooth rim portion on the inside rim of the
can. Such can openers usually turn down the
utilized over and over again in a manner which
peripheral portion of the cover which remains
20 after cutting out the central portion thereof and‘
press the same against the inner wall of the
can thus permitting the can to be ?lled again
with food stuffs and sealed.
One object of this invention is to provide a
25 simple can cover fastening means which may be
quickly and e?iciently applied to a cover hav
ing certain features which cooperate with the
fastening means to lock the cover in place on a
can.
30
Another object of this invention is to pro
vide a simple two part fastening means of the
character described which may be made in sizes
to ?t standard sized cans.
Another object of this invention is to provide
a cover and fastening means therefor which
will enable one to ?ll the can with the product
will be more fully explained later.
Another object of this invention is to provide
a fastening means for holding a cover remov- 15;
ably on a can and be so constructed as to per
mit other cans to be stacked thereon.
Other objects of this invention will appear
hereinafter as the description thereof proceeds,
the novel features, arrangements and combina~ 20
tions being clearly set forth in the speci?cation
and the claims thereunto appended.
In the drawing:
Fig. 1 is a top plan view of a device embody
ing my invention.
Fig. 2 is a cross-section taken along the line
2-2 of Fig. 1.
Fig. 3 is a side elevation of the fastening
means shown in Figs. 1 and 2 and looking at
the same from the left as viewed in Fig. 2.
30
Fig. 4 is a cross section taken along the line
4-4 of Fig. l, and
Fig. 5 shows a modi?cation of my invention in
cross-section.
In Fig. 2 I have shown a can of the usual 35
type used for canning vegetables and the like
which is to be preserved, then after sealing the
which are canned at the factory and sold in
can by means of the cover and fastening means,
the stores to the consumer.
Such cans have
permit the escape of steam during the cooking ' a peripheral cylindrical wall ID. to which a bot
40 of the contents thereof and later effectively pre
tom H is secured with an over-lap seam I2 40
vent the entrance of air into the can when the
cooking has ceased and the steam has condensed
such as shown in Fig. 2.
The top of the can
‘
to create a vacuum in the can.
is similarly secured by an over-lap seam 13 to
the upper peripheral edge of the wall ID of the
Another object of this invention is to pro
vide a simple fastening means having portions
engaging standard portions on the can which,
with the fastening means, create the pressure
is cut out bya can opener by certain types of can 45
openers now on the market, the remaining pe
necessary to ?rmly hold the cover in place.
In
carrying out this part of the invention the fas
50 tening means preferably engages the outwardly
and downwardly turned outer rim portion of
the can at the upper edge thereof as will be de
scribed more fully hereinafter.
Another object of this invention is to provide
55, a sealing means of the character described which
can. When the central portion of the can cover
ripheral portion I4 of the top inside the wall
of the can is turned downwardly against the
inside of the wall ID as is clearly illustrated in
Fig. 2, thus leaving a smooth inner surface 50.
which will not injure one using the can and
which will permit the ready insertion of a cover
which may closely fit within this turned down
peripheral portion M. The over-lap seam forms
a bead around'the' outer surface of the can at 55
2,120,047
2 .
is at a slight angle to the tangent of the can’
the top thereof and this bead projects outward
ly from the side of the can and provides a lower.
abutment shoulder I5 which I utilize in the
present instance in a manner to be described
presently.
'
In carrying out my invention I employ a cover
I6 having a central raised portion I‘! which vis
preferably ?at but which may be convex or con
cave as desired. The central portion I1 is pref
10 erably surrounded by an outwardly and down
wardly inclined cam portion I8 which extends to
the upwardly extending vertical contiguous wall
when the member and arm are in their full line
positions shown in Fig. 1 and for a purpose to
be described presently. Again it is not necessary,
that this edge be shaped as a cam but may be Cl
made to extend in the direction of the tangent
or be curved, and still give satisfactory ‘results.
The fastening means is applied in the follow
ing manner. The inwardly extending ?anges
or claws 21 are placed under the abutment shoul 10
der I5 and against the outside wall I3 so as to
prevent upward movement of the member 23,
I9 which has a laterally extending horizontal " the arm 24 being in the dotted line position.
portion 20 with a peripheral ?ange 2I thereon
'15 extending downwardly as is clearly illustrated
in Fig. 2. The vertical wall I9, laterallyextend
ing portion 20 and the downwardly extending
?ange 2| form a downwardly facing annular re
cess in which is arranged a ring-like gasket
20 22 of rubber or the like. This gasket is pref
erably square in cross section so that after the
same has been used it may be twisted through
out its length to present different surfaces in
a vertical and horizontal-direction. In Fig. 2
gasket is shown compressed in a vertical
.25 this
direction due to the clamping pressure on the
cover, but when not compressed the gasket
would be square in cross-section. It will be
noted that the-underside of the gasket may
30 become deformed after continued contact with
the rim of the can which is much sharper than
35
illustrated in the drawing, thus making this
surface unsuited ‘for sealing purposes. How
ever, the other three surfaces ‘on. the gasket
still will be in good condition and if these are
presented to the upper edge of the can by‘ twist-.
ing the gasket to present these surfaces they
will effect a good seal and the gasket can be
used longer than wouldotherwise be possible.
40. Of course, the gasket can‘ be shaped otherwise
than illustrated and described, and the recess
formed in the outer peripheral edge of the cover
to receive the gasket would then be shaped more
or less to conform with the shape of the gasket
45
being used.
-
It will be noted that there is a slight clear
ance between the vertical wall I9 on the can
cover and the downwardly turned peripheral
portion I4 of the original cover, for the can.
This permits steam to escape from the can when
50 the same is generated ,in the canvduring the
‘cooking process, the cover acting as avsafety
valve.
I will now proceed to describe the fastening
55 .means which, in the form of the invention il
lustrated in Figs. 1 to 4, comprises a flat metal
member 23 and an arm 24 which are pivoted to
each other at 257by a rivet or the like to per
shown inLFig. 1 while this is being done;
Down
ward pressure is then placedvon the upper side
of the arm 24 While one hand holds the bar
23 in place and while this pressure isexerted
on the arm 24 the same is moved in a counter
clockwise direction into the full line position
shown in Fig. 1.
The cam edge 3| is moved in 20
a manner to engage the side of ‘the can wall III,
below the abutment shoulder I5 and tensions
the arm 24 in a longitudinal direction asit ap
proaches the fullline position. In ‘the full line
position,fthe claw 3U is'under the abutment‘
shoulder I5 as are the claws 21 and the result.
is that upward movement of the fastening means»
is prevented. During the movement of the arm
24 in the counterclockwise direction mentioned
the cam contacting portion 28 on the arm rides 30
up along the cam portion I8 of the cover- on to
the central ?at portion I'I thereof, thus tend
ing to exert a transverse vertical stress on the
arm su?icient to hold the cover in place, it being
understood that when the arm‘is'in the dotted 35
line position shown in Fig. 1 that the camper-'1
tion 28 lies within the recess surrounding the
central portion and is below the level of the
central portion I'I whereby a transverse stress
is set up in the’ arm 24 as the cam portion 28 40
moves upon to the central portion I T! of the
cover.
‘
'
~
In order to limit the counterclockwise move
ment of the arm '24 and determine its operative
position I form a slot 32 in the member 23 as‘
will be noted in Fig. 1 and on the opposite
sides of this slot I deform the portions of the
arm oppositely in a vertical direction. This
4.5
deformation is shown most clearly in Fig. 4 and -
in Fig. 1. The portion to the right of slot in 50
Fig. 4 and above in Fig. 1 is turned downwardly
as at 33, whereas the portion on the other side‘
of the slot is turned upwardly as at 34.
The purpose of so forming the portions of op
posite sides of the slot'32, is two-fold. The 55
downwardly extending portion 33 acts as astop
which engages the side of the arm 24 when it
reaches the full line position in Fig. 1, thereby
determining the operative position'thereof. The
mit angularjmovement relative to each other.
forming of the portion 34 as described and‘as 60
60 The member 23 is provided at itsouter extremi¢ shown in Fig. 4 leaves a recess in the under
ties with downwardly extending portions 23 ter
minating in inwardly extending ?anges or claws’ side of the member 23 into which a detent 35
21, the extreme inner ends of which are curved formed onv the upper side of the arm 24 rides,
to thereby hold the arm 24 in its operative po
preferably to the same curvature as the outer
sition
against accidental movement in a clock 65
65 portion of the can to which the cover and fasten ’wise direction. This detent 35 is struck up out
ing device is to be applied. Satisfactory re
sults can be obtained by-having the inner ends of the edge of the arm 24 and when the arm
of these claws perfectly straight but it is pref
ferred that the same be made as described and
70
shown in the drawing.
>
The arm 24 has a downwardly extending cam
contacting portion 28 and is provided at its free
outer extremity with a downwardly extending
portion 29 terminating in an inwardly extending
75 flange or claw ‘3B, the inner edge 3I of which
24 leaves its operative position it will be noted
that this detent is swung clear of the member
. 23 so as not to frictionally'retard the angular
movement of the arm 24, whereby a free and
easy movement of the bar is obtained except ,
close to the operative position thereof. Of course,
this detent and stop could be formed otherwise
than as shown but I have found thatthe- con
2,120,047
struction illustrated forms‘ a very simple con
struction which lessens the cost of manufacture
of the device and efficiently performs the in
tended functions therefor.
It will be obvious that'a dome shaped central
portion for the cover or-even a cover having a
central concave portion may be suitable for use
with the fastening means shown in this appli
cation and therefore I do not wish to limit my
10 self to the construction shown except as herein
after set forth in the claims. Note also that in
the construction shown the portions I8 act to
brace the central portion l1 and prevent the
downward movement thereof, whereby the
15 clamping action does not materially move the
central portion of the cover in a downward di
rection and thus lose the effectiveness of the
fastening means.
'
In Fig. 5 I have shown a modi?ed arrange
20 ment of my invention in which the cover is
provided with a central concave portion 36 in
which the somewhat spherical cam engaging
portion 31 formed on the arm 38 rests when
the arm is in operative position, the cover hav
25 ing a cam portion 39 similar to l8 in Figs. 1 to 4
inclusive. This concave portion does not need
to be very deep or very large in diameter. Even
a slight concave or depressed portion would be
sumcient. With this arrangement the cam en
30 gaging portion 3'! and concave portion 36 act as
detent means and this makes it unnecessary to
provide separate detent means to hold the arm
38 in operative position as at 34-35 in Figs.
1 to 4, inclusive.
I do not wish to limit my invention to cans of
the nature which I have described as it is ob
vious that my device can be used with other cans
or receptacles which are provided with an abut
ment surface or surfaces (not necessarily a con
40 tinuous abutment) about the peripheral surface
thereof, and facing in a downward direction.
However, it would be more practicable probably
to form a continuous downwardly facing abut
ment surface on the exterior side thereof for use
with a device such as set forth herein.
It is to be noted that the upper surfaces of the
member 23 and arm 26, near the peripheral edge
of the cover, are substantially in the same plane
and are preferably so made so that other cans
may rest-on these members in an upright posi
ticn, thus enabling the housewife to store them
on her shelves the same as ordinary canned food
purchased at a store. While not necessary, it is
also possible to form the outer ends of the mem
ber 23 and arm 26 with arcuate depressions at a
position in substantially vertical alignment with
the side walls of the can so that the lower edge of
another can formed as in Fig. 2 may rest in these
grooves to prevent lateral sliding movement of
CO the same when placed upon a can sealed as de¢
scribed herein.
Obviously those skilled in the art to which this
invention pertains may make various changes in
the arrangement and construction of the parts
herein shown without departing from the scope
of this invention, and therefore I do not wish to
limit myself except as is hereinafter set forth in
the claims hereunto appended.
Having thus fully described my invention what
I claim and desire to secure by Letters Patent of
the United States is:
1. A fastening device of the class described
comprising a ?at member adapted to extend over
the cover to be held in place, having downwardly
75 and inwardly extending claws to act as retaining
3.
means, and an arm pivoted substantially centrally
, of said member, a downwardly and inwardly ex
tending claw on the free end of said arm to form
with the other downwardly and inwardly extend
ing claws on said member, a means for retaining
said device in place on a can, said arm having
a cover engaging portion for holding said cover
in place under pressure when the said device is
in operative position on a can provided with a
cover, said member having a slit in the edge there 10
of, which slit lies adjacent one edge of said arm
when said arm is in operative relation with said
member, said member having a portion adjacent
said slit extending into a position to engage the
side of said arm to limit the pivotal movement 15
away from operative position while permitting
pivotal movement thereof in the opposite direc
tion.
2. A fastening device of the class described
comprising a ?at member adapted to extend over 20'
the cover to be held in place, having downwardly
and inwardly extending claws to act as retaining
means, an arm pivoted substantially centrally of
said member, a downwardly and inwardly extend
ing claw on the free end of said arm to form with 25
the other downwardly and inwardly extending
claws on said member, a means for retaining said
device in place on a can, said arm having a cover
engaging portion for holding said cover in place
under pressure when the said device is in opera 30
tive position on a can provided with a cover, said
member having a slit in the edge thereof, which
slit lies adjacent one edge of said arm when said
arm is in operative relation with said member,
said member having a portion adjacent said slit 35
extending into a position to engage the side of
said arm to limit the pivotal movement away
from operative position while permitting pivotal
movement thereof in the opposite direction, said
member having a portion on the other side of said 40
slit deformed in a direction away from said arm to
provide a recess, and a detent formed on said arm
adapted to engage within said recess when said
arm is in operative position to, hold said arm
against accidental displacement from its opera 45
tive position.
3. A fastening device of the class described
comprising a flat member adapted to extend over
the cover to be held in place, having downwardly
and inwardly extending claws to act as retaining 50
means, an arm pivoted substantially centrally of
said member, a downwardly and inwardly ex
tending claw on the free end of said arm to form
with the other downwardly and inwardly extend
ing claws on said member, a means for retaining 55
said device in place on a can, said arm having a
cover engaging portion for holding said cover in
place under pressure when the said device is in
operative position on a can provided with a
cover, said member having a slit in the edge 60
thereof, which slit lies adjacent one edge of said
arm when said arm is in operative relation with
said member, said member having a portion ad
jacent said slit extending into a position to engage
the side of said arm to limit the pivotal move 65
ment away from operative position while per~
mitting pivotal movement thereof in the opposite
direction, said member having a portion on the
other side of said slit deformed in a direction
away from said arm to provide a recess, and a
detent formed on said arm adapted to engage
within said recess when said arm is in operative
position to hold said arm against accidental dis
placement from its operative position, said detent
being so arranged on said arm as to swing clear 75
2,120,047‘
4
ment of said arm to oneside of its operative posi
tion permitting said arm and member to be sep
arated from said cover, said arm having at the
ment about itspivot.
'
free end thereof a downwardly and inwardly ex
4. A ‘device as set forth in claim 2 in which'
tending claw for engaging an abutment surface
(A thevupper surfaces of, said arm and member are . on the said cover and having a portion thereof
formedwith portions near the extremities there
intermediate its ends and engaging the cover for
of adapted-to lie in substantially the same hori
zontal plane when ‘said device is in operative creating a clamping pressure when said fasten
of saidmember after a slight pivotal movement
of said arm in its permitted direction of move
‘ clamping position whereby another can may be
10’ supported on said arm and member and remain
in an upright position when so supported. '
" 5. A'rdevice of the class described comprising a
cover holding member having downwardly and‘
inwardly extending‘claws at its opposite ends, a
movable arm pivoted to said member substantially
centrally of its length and having a downwardly
and then inwardly extending claw on the free end
thereof, and a cover engaging means on said arm
so positioned with respect to said claws on said
, membervand arm as to engage a cover to create
, a pressure to hold the same in place when said
device is in operative position with said claws
ing means is in operative position on a can, the
same member and arm being provided with limit
10’
ing meanslfor preventing movement of said arm
to one side of its operative position while permit
ting pivotal movement thereof in the opposite
direction.
9. In a fastening device for holding a can ‘cover
in place, the combination with a member having
at its opposite ends, downwardly and inwardly
extending claws for engaging abutment surfaces '
on a can, an arm pivoted centrally of said mem
ber and extending substantially perpendicular
thereto when in operative position, the movement
of said arm to one side of its operative position
permitting said arm and member to be separated '
from said cover, said arm having at the free end
thereof a downwardly and inwardly extending
substantially the same shape as the outer side '
claw for engaging an abutment surface on the
walls of the can to which the same is to be ap
said cover and having a portion thereof inter
plied, and the claw on said arm having the end
mediate its ends and engaging the cover for
thereof which engages ,the can cam-shaped to creating a clamping pressure when said fastening
create a tension in said arm as the arm is pivoted
means is in operative position on a can, said arm 30
engaging retaining means 'on' the can, the inner
facing ends on said member vbeing curved to
into operative position, whereby said claws on said
member and arm are drawn ?rmly into engage
ment with the sides of the can.
t 6. A device of the class described comprising
a cover holding member having downwardly and
~ inwardly extending claws at its opposite ends, a
movable arm pivoted to said member substan
tially centrally of its‘ length and'having a down
wardly and then inwardly extending claw on
the free end thereof, and a cover engaging means
40 on said arm so positioned with respect to said
claws on said member and arm as to engage a
cover to create a pressure to hold the same in,
place when said device is in operative position
with said claws engaging retaining means on the
can, the end of said claw on said arm which en
gages said'can being cam-shaped to create a
tension in said arm as said arm is pivoted into
operative position, whereby said claws are all
drawn ?rmly into engagement with the outside
50
of said can.
7
7. A device of the class described comprising
a‘ cover holding member having downwardly and
inwardly extending claws at its opposite ends, a
movable arm pivoted to said member substan
tially centrally of its length and having a down
55
wardly and then inwardly extending claw on the
free end thereof, and a cover engaging means
on said arm so positioned with respect to said
claws on said member and arm as to engage a
60 cover to create a pressure to hold the same in
place when said device'is in operative position
with said claws engaging retaining means on
the can, the cover engaging means on said arm
having a detent portion adapted to cooperate with
V65 a detent portion on a cover to which said device
is to be applied for preventing lateral shifting
movement of said arm when said device is in
operative position.
8. In a fastening device for holding a can cover
in place, the combination with a member having
at its opposite ends, downwardly and inwardly
extending claws for engaging abutment surfaces
on a can, an arm pivoted centrally of said mem
ber and extending substantially perpendicular
75 thereto when in operative position, the move
and member being provided with cooperating,
automatically operating detent means for holding
said arm in operative position'relative to said
member against accidental displacement there
from, but permitting relative movement thereof ,,
when manual pressure is applied thereto to release
the clamping means.
'
10. In a fastening device for holding a can
cover in place, the combination with a member
having at its opposite ends, downwardly and 40
inwardly extending claws for engaging abutment
surfaces on a can, an arm pivoted centrally of
said member and extending substantially per
pendicular thereto when in operative position,
the movement of said arm to one side of its
operative position permitting said arm and mem
ber to be separated ‘from said cover, said arm
having at the free end thereof a downwardly and
inwardly extending claw for engaging an abut
ment surface on the said cover and having a por
tion thereof intermediate its ends and engaging
the cover for creating a clamping pressure when
said fastening means is‘in operative position on
a can, said arm and member having cooperating
means for preventing pivotal movement of said
arm relative to said member in'one direction
from their operative clamping position while per
mitting movement thereof in the opposite direc
tion and said arm and memberhaving detent
means thereon to hold said member and arm in
so
operative clamping position with each other
against accidental displacement from that posi
tion.
,
11. In a fastening device for holding. a can
cover in place, the combination with a member 65
having'at its opposite ends, downwardly'and' in
wardly extending claws for engaging abutment
surfaces on a can, an arm pivoted centrally of
said member and extending substantially per
pendicular thereto when in operative position,
the movement of said arm to one side of its op
erative position permitting said arm and mem
ber to be separated from said cover, said arm
having at the free end thereof a downwardly and
inwardly extending claw for engaging an abut
2,120,047
ment surface on the said cover and having a
portion thereof intermediate its ends and engag
ing the cover for creating a clamping pressure
when said fastening means is in operative posi
tion on a can, said arm and member being pro
vided with cooperating detent means for holding
said arm in operative position relative to said
member against accidental displacement there
from, that after a relatively small amount of
10 movement of said arm relative to said member in
its permitted direction of movement away from
its operative position with respect to said mem
her, the same will not retard the relative pivotal
movement of said arm and member.
15
12. In a device of the class described, adapted
to be used for closing the open mouth of a can,
the combination with a cover for closing the
mouth of said can and a fastening means com
prising a pair of arms pivoted to each other, one
20 of said arms having downwardly and inwardly
extending claws at the opposite ends thereof
adapted to be arranged under a bead on the out
side of the can to prevent upward movement of
5
said arm, the other of said arms having at least
one downwardly and then inwardly extending
claw also adapted to engage said bead in. a simi
lar manner, said claws being so arranged periph
erally of said can as to mutually cooperate to
prevent separation of said arms from said can by
movement thereof in an upward direction, one of
said arms having cover engaging means thereon
for exerting a pressure on the cover centrally
thereof to hold said cover in place on the can, 10
when said arms are in operative position beneath
the bead on a can, said arms being relatively
movable in a horizontal direction to permit said
claws to be moved relative to each other in such
a manner as to permit removal of said arms from 15
their operative positions, said end of said claw on
said arm which engages said can being cam
shaped to create a tension in said arm as said
arm is pivoted into operative position, whereby
said claws are all drawn ?rmly into engagement 20
with the outer periphery of said can.
HENRY P. TURNER.
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