Improvements in the Manufacture of Metal Barrels and other like Vessels.
Year: 1891

page_text: Date of Application, 7th Aug., 1891
Complete Specification Left. 7th June, 1892-Accepted, 9th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Metal Barrels and other like
Vessels.
I DAVID CAIRD of 26 Great St. Helen's in the City of London, Merchant,
do hereby declare the nature of this invention to be as follows:-
The object of my invention is to manufacture strong and liquid tight metal
barrels and other like vessels. For this purpose I make the barrels or vessels in
halves, each half forming one head or end and one half of the body, and I connect
the halves together as hereinafter described.
In carrying out my invention I draw or stamp each half barrel or vessel out of a
circular sheet or blank of metal. For the smaller sizes this can be effected by a
series of drawing or stamping operations including the formation of a bung hole
and of corrugations when required in the head or end; but for larger sizes it may
be desirable to finish the body portion by spinning after the drawing or stamping
operations. After trimming I next form an in-turned flange around the edge of
the half barrel, and also a groove around the periphery of the same at a short
distance from the edge; the said flange and the said groove are preferably
produced in the trimming machine after trimming. The flange of one half
barrel may have a circular corrugation or indentation inwards, and the flange of
the other half barrel a circular corrugation or indentation outward so that when
the halves are placed together the one corrugation or indentation fits into the other
, and thus assists in making the barrel liquid tight as well as strengthening the
same.
Having, thus made the half barrels I place two of them together flange to flange
either with or without a suitable packing and then apply a hoop which is put on
hot over the meeting edges of the half barrels. While the hoop is still hot 1 turn
down its edges into the grooves formed in the peripheries of the half barrels, so
that as it shrinks in cooling it will draw the halves together. The result is a
strong and liquid tight barrel or vessel.
Although I have described that I make the barrel or vessel in halves which are
subsequently secured together as before described I do not limit myself to actual
halves as it is evident that one of the two parts may form more than half and the
other less than half of the barrel; cach part however will consist of one head or
end of the vessel and part of the body.
Datedithis 7th day of August 1891
J. C. MEWBURN,
55 & 56, Chancery Lane, London, Patent Agent.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Metal Barrels and other like
Vessels.
I, DAVID CAIRD of 26 Great St. Helen's in the City of London, Merchant,
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 my invention is to manufacture strong and liquid tight. metal
barrels and other like vessels. For this purpose I make the barrels or vessels in
halves, each half forming one head or end and one half of the body, and I connect
the halves together as hereinafter described.

page_text: In carrying out my invention I draw or stamp each half barrel or vessel out of a
circular sheet or blank of metal. For the smaller sizes this can be effected by a
series of drawing or stamping operations including the formation of a bung hole
and of corrugations when required in the head or end; but for larger sizes it may be
desirable to finish the body portion by spinning after the drawing or stamping
operations. After trimming I next form an inturned flange around the edge of the half
barrel, and also a groove around the periphery of the same at a short distance from the
edge; the said flange and the said groove are preferably produced in the trimming
machine after trimming. The flange of one half barrel may have a, circular
corrugation or indentation inwards, and the flange of the other half barrel a
circular corrugation or indentation outwards so that when the halves are placed
together the one corrugation or indentation fits into the other and thus assists in
making the barrel liquid tight as well as strengthening the same.
Having thus made the half barrels I place two of them together flange to flange
either with or without a suitable packing and then apply a hoop which is put on
hot over the meeting edges of the half barrels. While the hoop is still hot I turn
down its edges into the grooves formed in the peripheries of the half barrels, so
that as it shrinks in cooling it will draw the halves together. The result is a
strong and liquid tight barrel or vessel.
Figure 1 of the annexed drawings is a vertical section of a metal barrel or vessel
made, in accordance with my invention, in halves which are connected together
in the manner that I preferably employ.
Figure 2 is a sectional view on a larger scale of the joint or connection of the
halves.
Each half barrel is shown as comprising one head or end a and one half 6 of the
body. The halves having been made and trimmed as already described I form on
the edge of each an inturned flange c and also a groove d around the periphery of
the half body at a short distance from the edge. I then place the halves together
flange to flange with or without a suitable packing and I apply a hoop e which is
put on hot over the meeting edges of the half barrels. While this hoop is still
hot I turn down its edges in the grooves d d as shown so that as it shrinks in
cooling it will draw the halves together.
Sometimes as hereinbefore mentioned and as shown in Figure 3 I form a
circular corrugation or indentation in each of the flanges c so that when the
half barrels are placed together the one corrugation or indentation fits into the
other as seen in the figure and thus assists in making the barrel liquid tight as well
as strengthening it.
Figure 4 represents a modification in which the flanges c c are turned outwards
instead of inwards and have a return flange g to serve as a bearing for the hoop e
which is put on hot as above described, its edges being then turned down into the
grooves dd. Or in either modification the hoop may be welded or fused to the
half barrels and the meeting edges of these may also be welded or fused
together.
Although I have described that I make the barrel or vessel in halves which are
subsequently secured together as before described I do not limit myself to actual
halves as it is evident that one of the two parts may form more than half and the
other less than half of the barrel, each part however will consist of one head or
end of the vessel and part of the body. Again for larger barrels it may be more
convenient to make each half or part in two pieces or sections as shown in Figure 5
one piece comprising the head or end a and part of the body and the other piece bl
being part of the body. All the parts or pieces will be flanged and connected
together in the manner already described. The pieces may conveniently be
formed by stamping or drawing them with a plain end out of a circular blank of
metal, then trimming, next forming the flange c at the open end and a grooved at
each end and finally cutting a disc out of the closed end so as to leave the required
flange cat this end.
For the purpose of strengthening the barrel body it may be corrugated either

page_text: longitudinally or circumferentially. Circumferential corrugations can be con-
veniently produced in the trimming machine; longitudinal corrugations can be
produced by any suitable tool or appliance after the half body has been, drawn or
stamped.
The invention applies to the manufacture of metal vessels of cylindrical form
such for example as "drums" as well as to vessels having a swell or "belly" such
as that shown in Figure 1.
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 manufacture of metal barrels and other similar vessels by making two
parts or halves cach comprising one head or end of the vessel and a part of the
body of same and connecting these parts or halves together, substantially as herein-
before described.
2. The butting flanges e and grooves d d on the half or part bodies in com-
bination with the hoop e applied over the meeting edges, substantially as herein-
before described.
Dated this 7th day of June 1892
J. C. MEWBURN,
55 & 56, Chancery Lane, London, Chartered Patent Agent.