Improvements in Hermetically Closing Jars and other Vessels.
Year: 1886

page_text: COMPLETE SPECIFICATION.
Improvements in Hermetically Closing Jars and other Vessels.
I, MARTIN OSCAR REHFUSS, of 1627, South Broad Street, in the City of
Philadelphia, State of Pennsylvania, United States of America, Machinist, do
hereby declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement :-
This Invention consists of certain Improvements in that class of fastening
devices for the caps of fruit jars and other vessels in which pivoted retaining arms
hung to the cap of the jar engage with cams on the neck, or in which the reverse
arrangement is adopted, the cams being on the cap, and the retaining arins being
pivoted to the neck of the jar.
The object of the Invention is to so construct such a fastening device as to
provide for the ready pivoting of the retaining arms to the cap or jar, and to
insure the effective application of power to the retaining arms in closing the jar.
On the accompanying drawings:
Fig. 1 represents a perspective view of the upper portion of a fruit jar having
cap retainer constructed in accordance with the present Invention;
Fig. 2. represents a side view of the same;
a
Fig. 3. represents a view looking in the direction of the arrow, 1, Fig, 2; and
Fig. 4, represents a view similar to Fig. 2, but illustrating a modification of the
Invention.
In Figs. 1, 2, and, 3, A, represents part of the body of the jar, the mouth of
which is constructed for the reception of the packing ring, a, and on opposite sides
of the neck of the jar are formed cams, b, the under faces of which are preferably
undercut or bevilled, as shown in Fig. 3.
The cap, B, of the jar rests upon the packing ring, a, and in opposite sides of
this cap are formed openings for the reception of the upper bent ends of the
retaining arms, D, which are thereby pivoted to the cap so as to be free to swing
thereon, the lower ends of the arms being bent inward and upward so as to engage
with the lower faces of the cams, b, as shown in Fig. 3.
The lower or bearing ends of the arms, D, are connected by a semi-circular
yoke, F, which serves as a means of operating the arms, and also to prevent undue

page_text: movement of the same, the yoke coming in contact with the neck of the jar when
the arms, D, have reached such a position as to properly retain the cap.
When the cap is applied to the jar, the arms, D, and yoke, F, may be in the
elevated position shown by dotted lines in Fig. 2, but as the arms, D, are swung
downwards, as shown by the arrow, 2, in said figure, the inwardly bent lower ends
of the arms engage with the cams, b, and the cap is thereby drawn down firmly
upon the packing ring, a, so as to insure a tight joint, the arms being prevented
from springing laterally out of engagement with the cams, b, owing to the undercut
or bevilled under faces of the latter.
Owing to the yoke, F, such a leverage can be exerted upon the arms, D, as to
insure the imparting of necessary pressure to the cap with the exercise of but
slight effort, the power being applied directly to those portions of the arms which
bear upon the cams.
In Fig. 4, there is shown a modification of the Invention, in which the cams, b,
are formed upon the opposite sides of the cap, B, the confining arins being pivoted
to the neck of the jar. The operation of this form of fastening is substantially
similar to that of the fastening shown in Figs. 1, 2, and 3.
I am aware that bottle stoppers have been provided with pivoted retainers for
engagement with the usual horizontal flange around the bottle neck below the
mouth, but in the improved fastening herein described, the cams, b, are essential,
as without these the downward pressure necessary in order to form the desired
tight joint, cannot be imparted to the cap.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
1. The combination of the jar or other vessel and its cap, with cams formed.
upon one of said parts, and retaining arms pivoted to the other part and having
bearing portions and a yoke connecting the same, the parts being arranged in
respect to each other as specified, whereby, as the arms swing, their bearing
portions engage with the cams and cause the cap to be drawn down firmly to its
sent on the vessel; all substantially as herein before described.
2. The combination of the jar or other vessel and its cap, having cams and
recesses, as hereinbefore described, retaining arms having bent or pivoted ends
adapted to the recesses, and bearing portions connected by a yoke, the parts being
arranged as specified, whereby, as the arms swing on their pivots the bearing
portions of said arms engage with the cams and cause the cap to be drawn down
firmly to its scat upon the jar, all substantially as hereinbefore described.
Dated this 16th day of November 1886.
DAY, DAVIES & HUNT,
Agents for the Applicant.