IMPROVEMENTS IN THE MANUFACTURE OF TINS OR CANISTERS FOR CONTAINING OILS, PAINTS, AND OTHER SUBSTANCES, AND IN TOOLS OR MECHANISM EMPLOYED THEREFOR."
Year: 1877

page_text: PROVISIONAL SPECIFICATION left by Edwin Yates at the Office of the
Commissioners of Patents on the 6th June 1877.
EDWIN YATES, of Glasgow, in the County of Lanark, North Britain, Manager of
the Clyde Galvanizing Works. "IMPROVEMENTS IN THE MANUFACTURE OF TINS OR
CANISTERS FOR CONTAINING OILS, PAINTS, AND OTHER SUBSTANCES, AND IN TOOLS
OR MECHANISM EMPLOYED THEREFOR."
This Invention has reference to a new or improved construction of tin or other
thin sheet metal canisters or cases for the containing, transit, or shipment of oils,
paints, or other liquids or substances, and in the mode and means, or new or
improved construction of tools or mechanisin for making the said cases or tins,
which are of a stronger and more durable character than those heretofore in use.
And the nature and novelty of the Invention consist, when applied to square
sheet metal cases, in making the body or four sides out of one sheet or piece,
equal in length to the said whole four sides, and in width to the height or depth of
the case to be formed, and in embossing four small semicircular or V shaped
grooves right across the sheet, exactly at the parts required to form the four corners
of the case; and further, in embossing shallow, flat, or other shaped bands or ribs
lengthways of the sheets, nearly across the spaces between the said corner grooves,
but preferably not quite reaching to these, so as to strengthen these parts which
are to form the flat sides of the case by the said indented, buckled, or corrugated
bands.
And the Invention further consists in embossing or forming the said indented
transverse grooves and longitudinal bands or ribs in the said sheets while cold by
the rolling action of a new or improved construction or arrangement of compressing
and shaping steel or other hard metal rollers or rolling die machine, which
consists of a pair of rollers rather longer than the width of the sheets to be rolled
and embossed, and depth of the cases to be formed, and both of a mean circum-
ference equal to the size or width of one side of the case; and they have the raised
and hollow or indented parts formed on and in their respective circumferences,
corresponding to the grooves and bands or ribs to be formed on each corner and
side of the tin, and fitting each other, with allowance for the thickness of the
sheet or sheets to be embossed between them at one time as they roll on and over
each other in their journal bearing bushes in the side frames of the machine, so that
Price 2dr

page_text: case.
grooved (^)
they revolve once to emboss each side, or four times to each sheet or body of a
The two rollers are geared to work truly into each other by spur pinions at
one or both ends of their spindles, outside the frames, and are driven by hand or
motive power direct by one of their spindles, or through an intermediate or counter
shaft geared thereto, the sheets being fed in one, two, or more at a time, according
to their thickness, between these new or improved construction or arrangement of
rollers or rolling dies, fitted with edge and surface or flat guides to ensure the
proper entering and parallel rolling and embossing of the sheets, as well as their
delivery straight or untwisted, all ready for being set at the corners to right angles,
by laying each transverse curved or corner groove between an inverted Vridged and
horn and lever swedge or presser, which thus shapes the swedged
sheets into the square bodies to form the canisters, the ordinary straight lap or
folded lap joint being formed close to one corner, out of the way of the undulating
embossed strengthening bars or ribs; the joint is then tacked by a drop of solder
at one or two points along it to keep each body in shape ready for having its ends
attached. The ends for fitting to the said body parts to form or complete cases
are formed out of the square pieces of sheet tin or other thin sheet metal, first_cut
to the proper size and then compressed cold, or without requiring to be heated in
one, two, or more sheets at a time, according to their thickness, in raised and
hollow or recessed dies fitting each other, with allowance for the thickness of the
plates, all so far as usual in a screw or other powerful press, with the middle part
considerably lower than the edges, and by these improvements with the dies so
formed as to emboss annular, shallow, flat, or other shaped strengthening rings or
annular bands or ribs, and with a raised deep groove embossed all round the edges,
into which the end edges of the body part would be inserted to form the joint
therewith, by compressing the sides of the deep groove outside close against the
ends of the body part inserted into it, by pliers or other compressers for the purpose,
all ready to form the close soldered joints, by dipping the case so put together in
the molten soldering mixture in the usual manner; one end would previously
have the hole punched out of it in one corner for soldering the filling bush or bezel,
to be closed or sealed as usual after each case is filled by soldering on a lid or disc
'of sheet tin.
Although square cases only have been described, it will be evident that hexagonal
or other polygonal or cylindrical cases may be made in the same manner and
according to these improvements; and that for small sized cases the sheets might be
rolled in the embossing rollers long enough to form two or more bodies in one
longth, and afterwards cut across at the proper places to form each body in ordinary
cutting or clipping machines, and the rollers might also be made long enough and
cut to form the rolling dies to forin the bodies of the two cases in the width of the
sheet rolled and embossed in them, and which could afterwards be cut longitudinally
"before being shaped into the case form.