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Патент USA US2132697

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Oct. 11, 1938.
Filed May 6, 1937
'2 Sheets-Sheet v1
I - ,'
Patented Oct. 11, 1938
' oLAss'JARvIsE
Jonah Eugene Neifert, Casey, Iowa
Application May' 6, 1937, Serial No. 141,154
1 Claim.
This invention relates to clamping and holding
devices designed primarily for clamping and
holding fruit jars while the usual screw caps
thereof are being removed or positionedvthereon.
An important object of the invention is to
provide a device of this character which will in
sure a uniform pressure being directed to the
fruit jar held in the device, thereby reducing the
possibilities of breaking the jar, during the clamp
ing operation.
Another object of the invention is to provide a
clamping means which may be operated to effec
tively hold the jar, by the operation of a lever
controlled by one hand, leaving the other hand
15 free to position the screw cap on the jar.
A still further object of the invention is to
provide a clamping jaw which will automatically
release its grip on the jar being clamped thereby,
when the operating lever is moved to its inactive
20 position.
With the foregoing and other objects in View,
which will appear as the description proceeds,
the invention resides in the combination and
arrangement of parts and in the details of con
25 struction hereinafter described and claimed, ‘it
being understood that changes in the precise em
bodiment of the invention herein described, may
be made within the scope of what is claimed,
without departing from the spirit of the invention.
Referring to the drawings:
Figure 1 is a side elevational view of a jar
holding and clamping device constructed in ac
cordance with the invention.
Figure 2 is a plan View thereof, illustrating the
35 movable jaw of the device in its clampingyposi
Figure 3 is a plan view of the device illustrat
ing the clamping jaw in its released position.
Figure 4 is a side elevational View of the device,
40 the movable jaw and lever employed in actuating
the jaw, being shown in their inactive positions.
Figure 5 is a perspective view of the cam mem
ber with which the lever cooperates, in operating
the jaw.
Referring to the drawings in detail, the device
includes a bracket indicated by the reference
character 5, the bracket being in the form of a
plate, adapted to be secured to a supporting
surface. This plate is formed with slots extend
50 ing from the upper edge thereof for the reception
of the bolts 6 carried by the frame 1 of the clamp.
The frame 1 includes a bar 8, and a bar 9 ex
tended at right angles to the bar, 8, as clearly
shown by Figure 2 of the drawings. The ref
55 erence character 10 indicates a curved jaw, which
(Cl. 81-33)
has connection with the bars II, that in turn
are formed integral with the bars 8 and 9.
Secured to the curved jaw l0 and depending
from a point substantially intermediate the ends
thereof, is an arm indicated by the reference
character l2, which arm has a right angled lower
end portion It to which the plate I4 is secured,
the plate providing a support to engage the bot
tom of the jar clamped by the device, and hold
the jar in a position to be clamped.
This plate M is provided with a layer of
padding material indicated by the reference char~
acter 55, when a jar to be gripped by the device
is positioned on the plate I4.
At the outer end of the bar 8, is an eye indi 15
cated by the reference character it, through .
which the reduced end of the ?exible movable jaw
ll, extends, the reduced end of the movable jaw
being secured in position within the eye, by
means of the rivet l8.
The opposite end of the ?exible movable jaw I7,
is bent upon itself, providing a bearing for
the bolt is, which bolt extends through the eye
20 of the operating rod 2|. As clearly shown by
Figure 2 of the drawings,’ the free end of the 25
bar 9, extends an appreciable distance beyond the
bar I I, associated therewith, where it is provided
with an opening through which the operating rod
2! extends. The operating rod ft is provided
with a plurality of openings 22, for the reception
of the cotter pins 23, which are connected by the
chain 24. Cams 25 are secured to the outer sur
face of the bar 9, and are adapted to cooperate
with the operating bar 28, which is provided with
an opening through which the operating rod 2|
extends. It will of course be understood that
the cotter pins are positioned in a manner as
shown by the drawings, to hold the operating bar
26 in a predetermined position on the rod 2!, to
the end that the flexible movable jaw, may be 40
adjusted with respect to the stationary jaw for
clamping jars of various diameters.
A coiled spring indicated by the reference
character 21, is disposed between the free end
of the ?exible movable jaw and inner surface 45
of the extended portion of the bar 9, so that
when the flexible movable jaw I1 is moved to a
clamping position, the spring will be placed under
tension to force the jaws apart, when the operat
ing bar 26 is moved to its inactive position, or to
the position shown by Figure 3 of the drawings.
Washers such as indicated at 28 are provided
on the operating rod 2|, and may be employed
in accurately adjusting the ?exible movable jaw
with respect to the stationary jaw.
The inner or jar engaging surfaces of the jaws,
are covered with padding material as indicated
at 29, to relieve the jar being clamped, of exces
sive pressure, in the event that the jaws are not
properly adjusted when the operating bar 26 is
operated to clamp the jar.
bolt connected to one end of the ?exible bracket
In the use of the device, a fruit jar is positioned
and having a plurality of openings formed there
in, said bolt extending through an opening in
within the clamp so that it rests on the support 7
the bracket, cam members on the bracket, an
stationary jaw formed on the bracket, a ?exible
jaw pivotally connectedto the bracket adjacent
to the stationary jaw and adapted to extend
around a jar resting on the supporting plate, a
With the operating bar 26 in its inactive
operating bar having an opening through which
position, the ?exible movable jaw I‘! is loose to
the bolt extends, a cotter key adapted to be posi
permit the jar to be positioned. The operating
bar is now moved to draw the ?exible jaw i‘!
tioned in'an opening of the bolt and against
into close engagement with the jar, against the,
which said operating bar engages, securing the
operating bar in its positions of adjustment on
action of the spring 21.
the bolt, a coiled spring on the bolt and resting
With the jar tightly gripped between the jaws
against the bracket, and said operating bar adapt
of the device, it is obvious that a suitable tool may
ed to- move over the cam members whereby the
be applied to the cover to position or remove the
?exible jaw is moved against the action of the
spring to grip a jar and hold the jar against
cover without the necessity of holding the jar.
I claim:
A jar holding device comprising a bracket, a
supporting plate held under the bracket, a curved
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