IMPROVEMENTS IN CANS OR VESSELS of the City of Worcester, Manufacturers. FOR HOLDING MILK AND OTHER LIQUIDS, WHICH IMPROVEMENTS MAY ALSO BE APPLIED TO BOXES, CASES, AND BARRELS FOR HOLDING BISCUITS, FLOUR, Sugab, AND OTHER ARTICLES
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by William Blizard Williamson at the
Office of the Commissioners of Patents on the 18th June 1880.
WILLIAM BLIZARD WILLIAMSON, of the Firm of W. B. Williamson and Sons,
"IMPROVEMENTS IN CANS OR VESSELS
of the City of Worcester, Manufacturers.
FOR HOLDING MILK AND OTHER LIQUIDS, WHICH IMPROVEMENTS MAY ALSO BE
APPLIED TO BOXES, CASES, AND BARRELS FOR HOLDING BISCUITS, FLOUR, Sugab,
AND OTHER ARTICLES,"
My Invention has reference principally to the covers of the 'said cans or
vessels, and boxes or cases, and consists of the construction and arrangement
of parts, herein after described, for making a liquid and air tight joint between the
cover and can, or box, caso, and barrel, and also of appliances constructed, as herein
after described, for fastening the cover to and unfastening it from the said can or
box or case.
For convenience of description I will describe my Invention as applied to a can
or vessel for holding and transporting milk.
I make the rim of the cover of a strong and deep band of vulcanized india rubber,
the said india rubber rim being supported upon a narrow vertical flange on the
underside of the cover, the said flange being situated slightly within the marginal
part of the said cover. The upper edge of the india rubber rim bears against the
underside of the marginal or overhanging part of the cover, and when the cover is
in its place on the can the lower edge of the india rubber rim bears against a flat
shoulder at the base of a short neck or ring around the mouth of the can, the
vertical metallic flange on the cover fitting over the said neck on the can.
the cover is fastened down in the manner herein after described the india rubber
rim is compressed, and its edge is made to bear forcibly against the flat shoulder
on the can and form a liquid tight joint between the cover and the neck of
the can.
When
I fasten tho cover to the can, and at the same time compress the rim of the cover
by means of a fastening consisting of a flat bar crossing the cover as a diameter,
Stop pins on the said
and turning on a pin or rivet at the centre of the cover.
cover permit the fastening bar to move through only a small angle. The fastening
bar is somewhat longer than the diameter of the cover, and the projecting ends are
bent down out of the plane of the other part, the bent ends making obtuse angles

page_text: with the unbent part. The extreme ends of the bent parts of the fastening bar
of less width than the other parts, and the reduced parts are fashioned into angular
catches for engaging under inclined shoulders made on the bail eyes fixed on opposite
sides of the can. The angular catches are not made on the same edge of tho
fastening bar but on opposite edges, and the inclined shoulders on the bail eyes are
correspondingly arranged, so that on turning the fastening bar on its centre through
a small angle the angular catches on the opposite ends of the said bar engage under
the inclined shoulders on opposite sides of the bail eyes, and thereby securely fasten
down the cover. As the angular catches travel under the inclined shoulders on the
bail eyes, the cover is forcibly pressed down on the can, and its india rubber rim is
thereby compressed, and a liquid tight joint formed between the cover and can.
By turning the fastening bar upon its centre in a direction opposite to that by
which it was fastened, its catches are withdrawn from under the inclined shoulders
on the bail eyes, and the cover is unfastened and may be removed.
The fastening bar may be locked in its fastening position by means of a small
padlock, or by a split ring, or by a screw bolt and nut, or by other analogous
incans. For this purpose I give one of the catches on the bar a hook shapo, and
pierce the outer side of the hook catch with a hole. I also make a similar hole in
the bail eye with which the hook catch engages, so that when the said catch is
engaged with its bail eye the two holes coincide, and the loop of the padlock, split
ring, or screw pin, or or other like fastening employed, may be passed through them
so as to lock the bar in its place.
I apply my improvements to cans for holding water, beer, and other liquids,
and to boxes, cases, and barrels, substantially as described with respect to a milk
CRD.