NEW OR IMPROVED MACHINERY FOR MANUFACTURING BAYONETS, MATCHETS, AND SWORDS
Year: 1855

page_text: Sealed the 26th February 1856, and dated the 26th September 1855.
COMPLETE SPECIFICATION filed by the said Thomas Deakin at the Office
of the Commissioners of Patents, with his Petition and Declaration, on
the 26th September 1855, pursuant to the 9th Section of the Patent
Law Amendment Act, 1852.
I, THOMAS DEAKIN, of Hazelwell Mills, near Kings Norton, in the County
of Worcester, Engineer, do hereby declare the nature of the said Invention
for NEW OR IMPROVED MACHINERY FOR MANUFACTURING BAYONETS, MATCHETS,
AND SWORDS," and the manner in which the same is to be performed, to be
particularly described and ascertained in and by the following statement,
(reference being had to the Drawings hereunto annexed, and to the letters
and figures marked thereon,) that is to say :-
My Invention consists of an arrangement of mechanical appliances, consti-
tuting apparatus or machinery to be employed for the purpose of working into
shape from the rough metal the various parts of the above-named articles, viz*,
bayonets, matchets, and swords, by which I am enabled to save much of the
expense incurred by manual labour.

page_text: Sheet A Figure 1 is a side elevation, and Figure 2 a plan, of one of my
machines adapted for bayonets.
Sheet B: Figure 3 is a longitudinal section of the machine; Figure 4, an
end elevation; Figure 5, an end elevation of another pair of cams adapted for
pressing the blade of the bayonet; Figure 6, section of ditto; Figure 7, an
elevation of a bayonet socket and neck after it has undergone this operation.
I will now proceed to describe the construction and working of the machine
shewn in the Drawings, which is adapted for forming the sockets, necks, and
blades of bayonets. The letters of reference apply to the same parts in all the
Drawings.
(A) is a sole plate, to which the framework (B) is bolted; (C) is a driving
shaft, properly bushed in plummer blocks, bolted to the frame, as seen at
(C, C"); (D) is a connecting rod, mounted at the end (D') on a crank on
the centre of the driving shaft (C), and at its opposite end attached to a similar
crank (E) on the shaft (F), also bushed in plummer blocks (F, F) bolted to
the frame (B). On the extremities of the shaft (F) are the cranks (G, G¹), to
which are attached the reciprocating rods (EI, H'), their opposite ends being
hung on two similar cranks (L, L'), fixed on the shafts or axes (I, I,) of the
segmental cam pieces (M, M). These shafts (I,I,) are bushed in brackets
(1, 1) supported by the upright framing or pedestal (N), adjusting screws
(K, K',) being employed to regulate the perpendicular position of the cams,
whilst in order to ensure their proper horizontal position the ends of the rods
(H, H',) are furnished with right and left-hand screws, working into properly
tapped collars, as shewn at (0, 0). By this arrangement it will be seen,
that a to and fro or rocking movement is given to the cams (M, M), and
as their convex surfaces are cut or sunk to the figure of one half the form
required to be given to the article, the metal on being clipped between them
is squeezed or compressed into the desired shape.
The Drawings on Sheet B (Figures 3 and 4) shew the form required for the
socket, neck, and shoulder of a bayonet, cut in the convex surfaces of the
cams. The metal rudely shaped, and with the neck and blade at right angles
to the socket, is placed between the cams, and by the severe pressure is forced
into the shape seen at (Figure 7); the swell in the centre of the socket pro-
vides for the rest or butt ring, which is formed from the solid metal, and
against which the locking ring butts.
(Figures 5 and 6), Sheet B, represent another pair of cams adapted for
compressing the grooves or concavities in the sides of the bayonet blade;

page_text: tapered channels, as seen at (p, p', p"), are cut in the convex surface of one
of the cams, that marked (p) being of a triangular section, to give the first
form of the blade; the second (p¹) having the sides of the channel slightly
convex, to form the grooves or concavities in the blade; and the third (p")
being the finishing channel. The upper or corresponding cam is level over the
channel (p), forming the third side of the blade, and projecting tapered ribs
(R, R',) are raised on the upper cam to shape the groove in the third side of
the bayonet blade. It will be evident that it is only requisite to cut the proper
forms for sword and matchet blades on the convex surfaces of the cams, to
render the same arrangement of machinery applicable to pressing those articles
as well as bayonets.
Having thus described the nature of my said Invention, and in what manner
the same is to be performed, I wish it to be clearly understood that I do not
confine myself to these precise details, so long as the material points of my
Invention be retained; but that which I claim is, the arrangement and com-
bination of the various mechanical parts herein described, and shewn in Draw-
ings, or any mere modification thereof, constituting machinery or apparatus
applicable to the manufacture of bayonets, matchets, and swords, in manner
herein more fully set forth and specified.
In witness whereof, I, the said Thomas Deakin, have hereunto set
my hand and seal, this Twenty-first day of September, in the year of
our Lord One thousand eight hundred and fifty-five.
THOMAS
(L.S.)
DEAKIN.