Improvements in the Manufacture of Sleeves or Washers for Armour Plate Bolts.
Year: 1886

page_text: Date of Application, 27th July, 1886.
Complete Left, 25th Apr., 1887.
Complete Accepted, 27th May, 1887.
Improvements in the Manufacture of Sleeves or Washers for
Armour Plate Bolts.
I, WALTER EYRE of the Atlas Works Sheffield in the County of York Engineer.do
hereby declare the nature of my said Invention to be as follows:-
The object of this invention is the manufacturing of slooves or washers for armour
plate bolts by the process of forging. The forging of these sleeves or washers may
be done by the use of a series of dies which may be used in conjunction with steam-
hammers or Hydraulic pressos.
In carrying out this invention the sleeves or washers may be forged with the hole
through ready for putting on to the bolt or they may be made solid and can then be
bored through in the lathe or other suitable machine.
By this invention the liability of the sleeves or washers to break when they are
struck by shot or when any other breaking force is brought upon them is very
much reduced.
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, London,
Agent for Walter Eyre.

page_text: 1 WALTER EYRE of the Atlas Works Sheffield in the County of York Engineor
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 :-
My Invention has for its object to overcome the objection to sleeves or washers
for armour plate bolts arising from their liability to break when struck by shot or
when other breaking force is brought to bear upon them. This liability to so break
is very objectionable in the ordinary manufacture of such sleeves or washers and
arises from their being produced by the process of casting.
According to my Invention I produce the said sleeves or washers by forging which
can be effected either so that they are produced with the hole through for the bolt to
be passed through or so that they are produced solid that is to say without the said
hole which can afterwards be bored through in a lathe or other suitable machine.
Ι carry my invention into effect by submitting the blank or piece of iron or steel
from which the sleeve or washer is to be formed to the action of a forging press,
steam hammer, rolls, or the like the dies or grooves of which presses or rolls or the
like have the form to be given to the sleeves or washers and where the form does not
admit of forging to the requisite shape at one operation I use a series of forging
processes which are conducted in such manner as to reduce the blank or piece of iron
or steel gradually or by stages to the shape eventually of the finished sleeve or washer.
In using for this purpose a number or series of dies or rolls corresponding respectively
to the shape to which each is to reduce the blank. I do not limit myself to any one
precise shape of the sleeve or washer nor to the use of a forging press as rolls or other
suitable means for forging may be used but I illustrate in the accompanying Drawing
a suitable shape obtained by three operations or stages of forging in a forging press.
I take a blank or piece of malleable iron or steel having the requisite amount of metal
in it and I submit it to a forging operation say in a forging press provided with dies
which forge it to the shape shown in Figure 1. I then by the use of a further set of
dies of the shape required and worked in a press forge it from the shape shewn in
Figure 1 to the shape shewn in Figure 2 and thereafter by a further set of dies of the
shape which is to be given to the finished sleeve or washer I forge the metal from

page_text: the shape shewn in Figure 2 to that of the finished sleeve or washer as shewn for
example in Figure 3.
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 :—
The manufacture of sleeves or washers for armour plate bolts, by a forging or like
process or operation or by forging or like processes or operations substantially as
hereinbefore described.