Improvements in the Manufacture of Built-up Heavy Guns.
Year: 1889

page_text: Date of Application, 27th May, 1889
Complete Specification Left, 26th Mar., 1890-Accepted, 26th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Built-up Heavy Guns.
I JOSEPH RUSHTON TURNOCK Steel Iron and Tinplate Manufacturer Yspitty Works
Loughor South Wales do hereby declare the nature of this invention to be as
follows:-
I form the gun by taking the usual steel or iron tube for the barrel and putting it
between centres arranged for rotating it I carefully coat it with tin or metallic alloy.
The barrel thus being prepared I take a tape of iron or steel of any desired thickness
and width such tape having been previously preferably tinued, then attaching the tape
to one end of the barrel I commence to wrap the barrel with a spiral of metallic tape
carefully consolidated by heat and pressure to remove every particle of superfluous
alloy. Having wound one layer from end to end I then return the tape in the
opposite spiral and so on to any desired thickness or shape. The necessary heat being
principally applied to the tape causes it to expand and on cooling it will embrace the
previous layers with enormous pressure.
In the manufacture of Guns on this principle the matter of length is only bounded
by the length of the barrel tube and it is unlimited as to thickness of body and the
manufacture could be carried on at any place to which the barrel could be carried.
Dated this 95th day of May 1880
J. RUSHTON TÚRNOCK.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Built-up Heavy Guns.
I JOSEPH RUSHTON TURNOCK Steel Iron and Tinplate Manufacturer Yspitty Works
Loughor South Wales 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:-
I form the gun by taking the usual steel or iron tube for the barrel and putting it
between centres arranged for rotating it I carefully coat it with tin or metallic alloy.
The barrel thus being prepared I take a tape of iron or steel of any desired thickness
and width such tape having been previously preferably tinned, then attaching the
tape to one end of the barrel I commence to wrap the barrel with a spiral of metallic
tape carefully consolidated by heat and pressure to remove every particle of superfluous
alloy. Having wound on one layer from end to end I then return the tape in the
opposite spiral and so on to any desired thickness or shape.
The necessary heat being principally applied to the tape causes it to expand and on
cooling it will embrace the previous layers with enormous pressure.
In the manufacture of guns on this principle the matter of length is only bounded
by the length of the barrel tube and it is unlimited as to thickness of body and the
manufacture could be carried on at any place to which the barrel could be carried.
In making these guns I do not of course confine myself entirely to the use of iron
and steel as other metals and alloys might in certain cases be used for instance bronze
for either barrel or tape or for both and in the case of guns requiring trunnions they
may be provided for by the trunnion coil being cast or forged in one piece and shrunk
and milled on to the barrel this outside coil may also totally embrace the powder
chamber and be used as the principal abutment for the breech mechanism. In cases
of guns not requiring trunnions provision for the breech piecès can be made in the
barrel tube.
In winding the tape on the gun I first attach the end of the tape to one end of the
barrel as before described, then by applying the necessary heat to the tape, by means

page_text: of a simple furnace or gas or spirit flame, to melt the alloy on the tape and at the same
time to slightly warm the barrel itself where the tape is to attach itself to, the barrel
previously connected up to revolve slowly then draws the tape on to itself and tension
is put on the tape in order to give it the required grip. The tension of the tape
may be obtained either by a brake on the drum from which it is unwound or by
hanging a weight on to it.
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-
1st. The use of metallic tape coated with an alloy to enable it to attach itself to the
barrel of a gun.
2nd. The coating of the barrel previous to the winding.
3rd. The method of applying the heat for the purpose of consolidating the tape and
causing the embracing of the interior layers by means of the contraction on cooling.
Dated this 25th day of March 1890.
J. RUSHTON TURNOCK.