Improvements relating to Milk Cans and the like.
Year: 1898

page_text: Date of Application, 20th Oct., 1898-Accepted, 28th Jan., 1899
COMPLETE SPECIFICATION.
Improvements relating to Milk Cans and the like.
I, JOSEF FLIEGEL, Manufacturer, of 8, Sprottauer Chaussee, Mallinitz, Silesia,
in the Empire of Germany, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:--
My invention relates to cans or like receptacles of the kind in which milk is
placed for conveyance or distribution.
Hitherto in cans or receptacles of this kind it has been customary to interpose
an indiarubber ring at the joint between the lid and neck but in use the collection
of deleterious matter about the ring tends to the production of bacteria with
resulting prejudicial effect on the milk and to obviate this cans have been made
of galvanized sheet iron, the lid and neck being made a tight fit and fastened by
various devices. This plan is also defective since the galvanized coating at the
joint soon disappears or becomes defective and the milk comes into direct contact
with the bare iron which is detrimental to the milk.
It is the object of my invention to obviate these disadvantages and to this end
I form the joining parts of the lid and can of an acid resisting metal or alloy
which is or may be in the form of rings one upon the lid and one upon the can
the joint being secured by pressure applied centrally to the lid.
A milk can embodying my invention is represented in the accompanying draw-
ings in which Fig. 1 is a side elevation, Fig. 2 is a plan, Fig. 3 is a vertical
central section at right angles to the view shown in Fig. 1 and Figs. 4 and 5
are respectively an enlarged part vertical section and plan showing details.
A is the body of the can and A¹ the neck thereof closed by a lid and according
to my invention for obtaining a tight joint between the lid h and neck A¹ Ï
provide the former with a ring a and the latter with a ring b. These rings are
made of a metal or an alloy incapable of forming oxides detrimental to health,
such metals as aluminium or an alloy of aluminium, tin and copper are or may
be employed the composition of the latter alloy being such that the formation
of zinc or lead oxides which are detrimental to health is entirely avoided and the
proportion of copper used is such that the formation of verdigris cannot take
place. To give an example, I find a suitable alloy can be made from the following
proportions namely:-100 parts of tin (by weight) 100 parts of copper and 1 part
of aluminium, but any other alloy can be used whose oxides are not detrimental
to health and which alloy has so high a melting point that when soldering the
rings onto the can the alloy of the tin will not melt.
The rings a and b or their supporting parts are of suitable thickness or strength
and the pressure is applied centrally of the lid h so as to secure a good ioint.
The pressure applying and lid securing and closing device consists of a bar such
as e fixed centrally to the recessed lid has at e² and curved upwards and then
outwards beyond the lid as shown, the bar e is joined across its curved part by
a bar el forming a handle. At the side of the joint of lid and can is arranged
a pressure levere formed of a hoop hinged at g g on either side of the can to

page_text: standards such as g g its upper part being curved as at 3 and adapted to pass
over the extended part of the bar e and exert pressure thereon and secure same
firmly in position when the lever is depressed as shown in Figs. 1 and 2. The
lid h is hinged to the can A by a link f hinged to the can or a bracket thereon as
at f¹.
ccare lid raisers in the form of cams or curved parts formed by extending
the lever beyond its bearings g at each side and they are adapted when the
part of the lever is raised from engagement with the bar e to engage and lift
the latter so as to release the lid which can then be turned back upon its
hinge f.
t
Fig. 4 is a detail of the joint showing the rings a and b somewhat enlarged and
Fig. 5 is a part plan of the bar e.
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-Forming the joining surfaces of the lid and neck of milk cans and the like
of a material whose oxides are not detrimental to health substantially as herein
set forth.
2-The use at the joining surfaces of the lid and neck of milk cans and the
like of rings such as a and b of solid metal or a metal alloy, whose oxides are
not detrimental to health, said rings being pressed into firm contact by pressure
applied centrally by a suitable locking device substantially as described.
3 The combination with a joint of the kind described and claimed for milk
cans or the like of a bar or projecting part e, pressure levere hinged to standards
or part of the can and having a curved or eccentric portion for engaging and
exerting pressure upon the part e and locking the lid when the lever c is depressed
and a lid raiser for releasing the lid when the lever c is raised substantially
as described.
4 The improvements in milk cans and the like comprising a joint formed of
the material described and the means for securing and locking the lid to the
can all arranged and adapted for operation substantially in the manner and for
the purposes set forth in reference to and as shown in the accompanying
drawings.