Improvements in the Process of, and Tools for, Producing the Bolsters upon Chisels and like Tools.
Year: 1898

page_text: Date of Application, 1st Feb., 1898
Complete Specification Left, 29th Oct., 1898-Accepted, 23rd Dec., 1898
PROVISIONAL SPECIFICATION.
Improvements in the Process of, and Tools for, Producing the Bolsters
upon Chisels and like Tools.
We, JOHN WALTER WARD, 126, Creswick Street, Edge Tool Forger, PHILIP
ASHBERRY, Wards Works, West Street, Manager, and DAVID WARD, of the same
address, Manufacturer, all in the City of Sheffield, do hereby declare the nature
of our invention to be as follows:-
Our invention has for its object to produce the bolsters in a more perfect shape,
and with greater rapidity than heretofore, and for this purpose we use a pair of
top and bottom dies, or hammer tools, constructed as follows: Premising that we
are well aware that such dies but of different construction, are used for chisel
forging and therefore we make no claim to the use of such dies broadly.
The faces of each tool or die are similarly shaped, half the desired configuration
being made in each face as is well understood.
There are six matrices so called, in these dies, the first to be used is for "setting
down" or reducing one part of the piece of steel which is to form the tang and
to leave the part for the blade the full size. The second is for forming the
bevelled bolster in its square shape and rounding the shoulders of the blade, for
this purpose it has a groove vertical on one side and tapered upon the other, a flat
part also reduces the tang portion.
The third consisting of a flat and a clearance recess is used to flatten the
shoulders which have been thickened at the edges by the previous operations;
the fourth consists of a deep groove for more nearly perfecting the shoulders and
bolsters in their bevelled square form.
The fifth are tapering faces between which the tang is pointed and finished,
and the sixth is an arrangement of a groove with one side vertical and the other
bevelled, and two faces between which the corners of the hitherto square bolster
are set down to produce the desired octagon form.
Dated the 31st day of January 1898
COMPLETE SPECIFICATION.
30 Improvements in the Process of, and Tools for, Producing the Bolsters
upon Chisels and like Tools.
We, JOHN WALTER WARD, 126, Creswick Street, Edge Tool Forger, PHILIP
ASHIBERRY, Wards Works, West Street, Manager, and David WARD, of the same
[Price 8d

page_text: address, Manufacturer, all in the City of Sheffield, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement:-
Our invention has for its object by the use of specially constructed tools, to
produce with accuracy and rapidity the taper tang, curved neck, and octagonal
form of bolster upon carpenters chisels and other like tools.
These special tools or dies, and the various stages of the process are illustrated
in the annexed sheets of drawings to which reference will be made.
Fig. 1, represents the top and bottom dies when they are brought together.
Fig. 2, represents the face of one of the dies.
Figs. 3, 4, 5, 6, 7, & 8, are sections through the several faces of the dies.
Figs. 1, 2, 3, 4, 5*, & 6*, represent the chisel in the various stages of
manufacture.
In carrying out our invention we make a pair of top and bottom tools or dies A
and B, Fig. 1, having six different configurations which form matrices half
being formed upon the top die and half upon the bottom die, as is well under-
stood.
We have in the drawings in Fig. 2 numbered these matrices 1, 2, 3, 4, 5, 6, and
the representation of the result of each stage or pass upon the chisel blank is
marked 1 to 6º.
Hitherto there has been much difficulty in producing the octagonal form of
bevelled bolster without bruising the other parts of the chisel and it is to accom-
plish this work without trouble and with rapidity that we have invented these
tools and process.
In carrying out the invention we take a piece of steel of proportions suitable
for producing the desired chisel, and heat it to the required degree.
We then place it upon the face or matrix 1, seen in Fig. 2, upon its edge, the
top die A being raised to enable this to be done: the action of the dies which are
carried by a steam hammer or other hammer produces the result shown in Fig. 1ª
termed in the trade necking, and setting down the tang end.
It is then passed quickly to the face 2, the result of the manipulation between
these faces being seen in Fig. 24, the bolster being bevelled and squared in the
groove G, and the tang being further reduced; the necking is advanced but this
operation causes the metal to bulge at C, on each side, it is therefore passed to
No. 3. and flattened as 3ª, the bolster being protected from damage by being held
over the sunk recess R.
The curved neck N, is produced between the faces 4, and is shown in Fig. 4*,
and the tang seen in Fig. 5 is drawn out between the faces 5, the final process of
making the square bolster into an octagon is performed between the faces 6,
which are rather wider apart when the dies are in contact than those of Number 2,
to prevent the dies touching and disfiguring the shank or neck, and the tang.
The result is shown in Fig. 6ª.
We are well aware that the use of top and bottom dies in steam and other
hammers is well known and we therefore make no claim to the use of such tools
broadly, nor do we intend to make any claim to forming an octagonal bolster upon
a chisel, but:
Having now particularly described and ascertained the nature of our invention,
and in what manner the same is to be performed, we declare that what we
claim, is:-
1. The improved process or method of producing the octagonal bolster with the
shank and tang, of chisels, and like tools, by means of the top and bottom dies,
hereinbefore described and set forth.
2. The construction of the faces of a pair of top and bottom dies A & B, and
their use in the manufacture of chisels and like tools as hereinbefore described
and substantially as shown in the drawings.

page_text: 3. In a pair of top & bottom dies the use of the special faces for forming the
octagonal bolster of chisels and like tools, marked 2 and 6, in combination.
Dated the 27th day of October 1898.
ROBT. F. DRURY, C.P.A.,
Agent for Applicants, Bank Buildings, George Street, Sheffield.