IMPROVEMENTS IN PICKS, ADZES, AXES, AND TOOLS OF A SIMILAR CHARACTER
Year: 1870

page_text: | LETTERS PATENT to William Tarleton Bury, of Regent Works,
Sheffield, in the County of York, Steel Manufacturer, for the.
Invention of "IMPROVEMENTS IN PICKS, ADZES, AXES, AND TOOLS OF A
SIMILAR CHARACTER."
Sealed the 17th January 1871, and dated the 6th August 1870.
PROVISIONAL SPECIFICATION left by the said William Tarleton Bury
at the Office of the Commissioners of Patents, with his Petition,.
on the 6th August 1870.
I, WILLIAM TARLETON BURY, of Regent Works, Sheffield, in the
County of York, Steel Manufacturer, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN PICKS, ADZES, AXES, AND TOOLS OF
A SIMILAR CHARACTER," to be as follows:-
The object of this Invention is to supply miners; excavators, and
others with a pick or other tool of a similar character which may be
readily attached to and detached from the shaft at pleasure. For this
purpose a strap of wrought iron or other suitable metal' is bent over
the end of the shaft so as to form a bridge or loop, and is secured against
the side surfaces by rivets, screws, or other suitable fastening. A piece

page_text: of iron or other metal having a recess or notch is secured inside the loop
against the end surface of the shaft. The pick or other blade is formed so
as to slide into the said loop, and has a projection or rib which fits into
the before-mentioned notch or recess, and it is held in its place by means
of a wedge, key, or cotter, either made with a spring or not which is
driven into the loop above the blade.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Tarleton Bury in the Great Seal Patent
Office on the 6th February 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
TARLETON BURY, of Regent Works, Sheffield, in the County of York,
Steel Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixth day of August, in the year of
our Lord One thousand eight hundred and seventy, in the thirty-fourth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the 'said William Tarleton Bury, Her special licence,
that I, the said William Tarleton Bury, my executors, administrators,
and assigns, or such others as I, the said William Tarleton Bury, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN PICKS, ADZES, AXES, AND TOOLS OF A SIMILAR CHARACTER," upon the con-
dition (amongst others) that I, the said William Tarleton Bury, my
executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe
and ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Tarleton Bury, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in

page_text: and by the following statement thereof, reference being had to the
accompanying Sheet of Drawings and to the figures and letters marked
thereon, that is to say :-
The object of this Invention is to supply miners, excavators, and others
with a pick or other tool of a similar character which may be readily
attached to and detached from the shaft at pleasure. For this purpose
a strap of wrought iron or other suitable metal is bent over the end of
the shaft so as to form a bridge or loop, and is secured against the side
surfaces by rivets, screws, or other suitable fastening. A piece of iron
or other metal having a recess or notch is secured inside the loop against
the end surface of the shaft. The pick or other blade is formed so as to
slide into the said loop, and has a projection or rib which fits into the
before-mentioned notch or recess, and it is held in its place by means of
a wedge, key, or cotter, either made with a spring or not, which is driven
into the loop above the blade.
On the accompanying Drawing is shown my before described improved
attachment as applied to picks; Figure 1 shows a front view of the pick;
Figure 2 shows a longitudinal section through the head of the same;
Figure 3 shows a transverse section through the loop with the blade
removed, and Figure 4 shows a detached view of the spring cotter.
The loop A is provided with cheeks by which it is secured to the
shaft B by rivets or screws as shewn, it has secured inside it a plate C
fitting against the end of the shaft and provided with a recess or
groove c.
The pick blade D is formed with a projecting rib D corrc-
sponding in size with this recess, and the loop A is made of sufficient
height to enable the rib of the blade to be passed in so as to drop with
its rib into the recess c, and the blade is firmly secured in this position
by means of the split key E which is driven in between the top of the
blade and the loop as shewn. The blade is as readily removed by
driving out the key. The blades of adzes, axes, and similar tools may
be secured in a precisely similar manner by substituting for the eye by
which they are usually secured a projecting stem fitting into the loop A
of the shaft, and having a rib fitting into the recess c as described. It
will be evident that the arrangement might be reversed and the pro-
jection be formed in the loop, and the recess in the blade, and the key
or wedge may be placed below the blade, though it is considered that
this reversed arrangement would not be so advantageous.

page_text: Having thus described the nature of my Invention, and in what
manner the same is to be performed, I wish it to be understood that
I do not limit myself to the precise form or arrangement of the several
parts shewn on the accompanying Drawing, as these may be variously
modified as before stated without departing from the nature of my
Invention; but what I claim as the Invention secured to be by the hercin-
before in part recited Letters Patent is, constructing picks, adzes, axes,
and tools of a similar character with a loop or eye on the shaft in which
the blade of the tool is secured by a key, provision being made on the
blade and loop for the fitting of a projection on the one into a recess in
the other to prevent any shifting of the blade while it is secured by the
key, substantially as herein-before set forth.
In witness whereof, I, the said William Tarleton Bury, have here-
unto set my hand and scal, this Fourth day of February, in
the year of our Lord One thousand eight hundred and seventy-
one.
WILLIAM TARLETON BURY. (L.S.)