Improvements in Fastenings for the Joints or Sections of Metallic Boxes, Tanks, and the like.
Year: 1892

page_text: Date of Application, 25th Nov., 1892
Complete Specification Left, 25th Aug., 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Fastenings for the Joints or Sections of Metallic
Boxes, Tanks, and the like.
1, PETER STUART BROWN of Egremont, Cambuslang in the County of
Lanark, Manufacturer, do hereby declare the nature of this invention to be as
follows:
This invention has for its object to provide a simple and efficient metallic
fastening for holding together the sections or parts constituting a metallic box,
tank or like structure, and that, if desired, without the use of solder or brazing and
whilst applicable generally the invention is particularly_adapted to the class of
metallic boxes described in the Specification under the Letters Patent No, 6989
A.D. 1891 granted to Henry James Stuart Brown and wherein the four sides of
the body of the box are made in one piece which is subsequently bent into shape
and has the two ends of the plate secured or fastened together.
Under the present invention the fastener which extends the full length of the
joint is under one modification composed of three strips of metal one of which in
the initial stage of manufacture has both of its edges bent over towards each other
on the body throughout the entire length of the bending being effected by suitable
tools or cramps in a hydraulic or other press. The two other strips are each bent
by similar means into a channelled form and so that one edge is capable of being
entered under the turned over edges of the first mentioned strip whilst the other
edge overlaps the bend made in turning the said edges inwards. When the two
second mentioned strips have been inserted in position mandrils are also inserted
and the combined strips are submitted to the action of another die or cramp
whereby the first mentioned strip is bent upwards as from the middle of its length
into a Ů, V or similar form which being effected the mandrils are withdrawn, the
strips being closed up upon each other the first mentioned holding the two second
mentioned securely in place whilst between the overlapping edges of the second
mentioned strips channels or grooves are produced throughout the length of the
fastener. The ends of the individual sheet or of the various sections of sheets
constituting the box or tank where the joint is to be made are flanged or bent over
and the joint is effected by slipping the overlapping edges of the two second
mentioned strips of the fastener over and along the said bent edges.
Under another arrangement the fastener may be composed of one strip only
doubled or bent upon itself. to constitute a cross section similar to that herein before
described.
Dated this Twenty-fourth day of November 1892.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in Fastenings for the Joints or Sections of Metallic
Boxes, Tanks, and the like.
I, PETER STUART BROWN of Egremont, Cambuslang in the County of
Lanark, Manufacturer, 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 :-
This invention has for its object to provide a simple and efficient metallic
fastening for holding together the sections or parts constituting a metallic box tank

page_text: or like structure and that, if desired, without the use of solder or brazing. Whilst
applicable generally the invention is particularly adapted to the class of metallic
boxes described in the Specification under the Letters Patent No. 6989 A.D. 1891
granted to Henry James Stuart Brown where the four sides of the body of the box
are made in one piece which is subsequently bent into shape and has the two ends
of the plate secured or fastened together.
The present invention is illustrated on the accompanying sheet of drawings,
Figure 1 being a plan of a box with the cover removed and shewing the fastener
in place at one corner ;
Figure 2 is a plan or horizontal section illustrating the method of constructing
the fastener;
Figure 3 is an end view shewing the fastener completed, and
Figure 4 is an end view of a modification.
The fastener which extends the full length of the joint is as shewn by Figures 2
and 3 composed of three strips a a¹ a² of metal one of which a in the initial stage
of manufacture has both of its edges bent over towards each other on the body
throughout the entire length, the bending being effected by suitable tools or cramps
in a hydraulic or other press. The two other strips a¹ a2 are each bent by similar
means into a channelled form and so that one edge is capable of being entered
under the turned over edges of the strip a whilst the other edge overlaps the bend
made in turning the edges of the strip a inwards. When the two strips a' a² have
been hooked on to the strip a, mandrils are inserted at b and the combined strips
. are submitted to the action of another die or cramp whereby the strip a is bent
upwards as from the middle of its length into a U, V or similar form which being
effected the mandrils are withdrawn. The strips are thus closed up upon each
other the strip a holding the two others a¹ a² securely in place whilst at the same
time channels or grooves are produced throughout the length of the fastener.
The ends of the individual sheet c or of the various sections of sheets constituting
the box or tank where the joint is to be made are flanged or bent over and the
joint is effected by slipping the channels of the fastener over and along the said
bent edges.
Under the modification illustrated by Figure 4 the fastener is composed of one
strip only doubled or bent upon itself to constitute a cross section similar to that
herein before described.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
In joints of metallic boxes tanks and the like, the metallic fastener constructed
as hereinbefore described with reference to the two modifications illustrated on the
accompanying drawings.
Dated this 24th day of Anonst. 1892
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.