Improved Apparatus for Fastening and Locking the Covers of Milk and other Vessels.
Year: 1895

page_text: Date of Application, 9th Dec., 1895
Complete Specification Left, 1st Oct., 1896-Accepted, 7th Nov., 1896
PROVISIONAL SPECIFICATION.
Improved Apparatus for Fastening and Locking the Covers of Milk
and other Vessels.
We, ARTHUR ENOCH FROST and THE DAIRY OUTFIT Co., LTD., both of
251, 253, & 255 Pentonville Road in the City of London, do hereby declare the
nature of this invention to be as follows :-
A piece of tempered brass is soldered inside the neck of the milk, or other,
vessel which forms a spring and engages in a catch made for the purpose in the
cover. On the flange of the cover of the vessel which fits inside the neck a piece
of sheet metal is fixed to cover the before mentioned spring.
A key hole is made in the sheet metal cover so that the spring can be pressed
by a key passing through same to release the cover of the vessel. By making
keys to different vessels of different shapes, and the corresponding key holes to fit
and by splitting the brass spring in one or more places this invention can be made
so that each key will only open the vessels for which it is designed.
It is obvious that the position of the spring and key hole may be reversed.
D
Ninth day of Decembar
Improved Apparatus for Fastening and Locking the Covers of Milk
and other Vessels.
We, ARTHUR ENOCH FROST, Director of The Dairy Outfit Company, Limited,
and THE DAIRY OUTFIT COmpany, LimitED, both of 251, 253 & 255, Penton-
ville Road, in the County of London do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
The object of this invention is to combine a simple but effectual lock and fastener
for milk or other vessels, which can only be opened by those in possession of
the key.
In the drawings hereunto annexed,
Figure 1, shows a sectional view of part of the can cover with its flange having
the plate "A" hereinafter described attached thereto, and Figure 2, a front view
of the same.
Figure 3, shows a sectional view of that part of the neck of the vessel into
which Figure fits, and Figure 4 is a front view of the same,
Figure 5 is a side view of the key, Figure 6 is an end view of the same, and
Figure 7 is a sectional view of the cover and neck fitted together fastened with
this invention.
The same letter refers to the same part in every figure.

page_text: We take an ordinary spring made of tempered sheet metal "D" and fasten it
inside the neck of the vessel.
We fix a block or catch "C" on the cover upon which the spring engages when
the cover is in its place on the vessel.
On the flange of the cover which fits inside the neck of the vessel a piece of
sheet metal or other suitable material "A" is fixed which when the cover is shut
down comes in front of and guards the spring "D."
In this piece of sheet metal "A" a key-hole "B" is cut which may vary in
shape in different vessels.
The key (Fig. 5 & 6) the end of which corresponds in shape to the key-hole is
pushed through the key-hole "B" and presses the spring "D" releasing it from the
catch "C" and the cover can be taken off.
As an additional security the spring "D" may be split in one or more places
"E" to ensure that the whole width of the end of the key must be used before the
spring is released from the catch.
By making the keys and corresponding key-holes of different shapes this invention
can be made so that each key will open the vessels for which it is designed only.
It is obvious that this invention can be made with the positions of the spring "D"
and covering plate "A" reversed, that is the spring "D" on the flange of the
cover and the covering plate "A" forming part of the neck.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that what we
claim is.
1. In spring fasteners for milk cans or other vessels the placing of a plate in
front of the spring with a shaped key-hole therein (with key to fit) in such a
manner that the spring cannot be released without the key, substantially as
described and shown on annexed drawings.
2. One or more splits cut in the spring to ensure that the whole width of the
end of the key presses against the spring before it is released.
For THE DAIRY-OUTFIT CO., LIMITED,
F. H. FREETH,
Managing Director.