IMPROVEMENTS IN THE CONSTRUCTION OF MACHINERY FOR CUTTING AND DRESSING PAVING STONES OR SETTS
Year: 1877

page_text: LETTERS PATENT to Thomas Madderson, of Great Ayton, near Northallerton, in
the County of York, and Benjamin Wilkinson, of the same place, for the
Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF MACHINERY FOR
CUTTING AND DRESSING PAVING STONES OR SETTS."
ealed the 27th November 1877, and dated the 30th May 1877.
PROVISIONAL SPECIFICATION left by the said Thomas Madderson and
Benjamin Wilkinson at the Office of the Commissioners of Patents on the.
30th May 1877.
THOMAS MADDERSON, of Great Ayton, near Northallerton, in the County of,
York, and BENJAMIN WILKINSON, of the same place. "IMPROVEMENTS. IN THE
CONSTRUCTION OF MACHINERY FOR CUTTING AND DRESSING PAVING STONES OR
SETTS."
This Invention relates to the construction of improved machinery, whereby.
paving stones or setts can be cut and dressed with much greater ease and rapidity
than is possible by manual labour which has hitherto been employed for such,
purposes, and consequently with a great saving in regard of expense.
The main body of the machine consists of two strong vertical side frames or
standards which are securely fixed on a suitable bed plate or foundation, such frames
or standards being connected at the top thereof by a cross head or bar for the support
of certain parts of the apparatus. Above the said main body or frame of the
machine is fixed a vertical cylinder in which works a solid piston and piston rod,
formed of forged iron, and to the bottom of which is fixed a suitable head or block;
the upward and downward motion of which is controlled and regulated by its working.
in suitable grooves in the vertical standards. A steel knife or cutter is fitted into a.
dovetailed groove or slot in the said head or block, and fixed therein by means of a
key or wedge. A hollow cast-iron standard of the requisite height is placed beneath
the knife or cutter, the same having a recess cast or formed in the top thereof for
the reception of a block of hard wood which is fitted therein. The stones are held.
in position over the said wooden block by means of tongues or other mechanical'
contrivances, or by hand, as may be desired, and are cut or dressed by the action of.
the knife or cutter. ..

page_text: As a motive power steam directly applied is preferred, but steam power derived
from a separate engine and communicated by means of suitable connections and
gearing may be used, or hydraulic or water power may be employed. When steam
is applied in a direct manner, the main valve employed is the ordinary slide valve,
and on each end of the steam chest is cast a small cylinder, which cylinders are fitted
with pistons the rods of which pass through the main valves. On the side of the
steam chest is a small valve by which the last-mentioned pistons are worked by means
of a small spindle which passes through the side of the steam chest. On the
head or block of the piston is fitted an upright spindle which passes through a lever
on the valve spindle, or the upright spindle is fitted with bosses which can be altered
by set screws, so that more or less steam may be admitted to the top or bottom of
the main cylinder, as may be desired.
The machine before described is self-acting, and may be worked at any desired
rate of speed. And it may be observed that modifications may be made in the
arrangement of the said self-acting gear without departing from the principles of
this Invention,
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Madderson and Benjamin Wilkinson in the Great Seal
Patent Office on the 30th November 1877.
THOMAS MADDERSON, of Great Ayton, near Northallerton, in the County of
York, and BENJAMIN WILKINSON, of the same place.
" IMPROVEMENTS IN THE
CONSTRUCTION OF MACHINERY FOR CUTTING AND DRESSING PAVING STONES OR
SETTS."
Our said Invention relates to the construction of improved machinery whereby
paving stones or setts can be cut and dressed with much greater ease and rapidity
than is possible by manual labour which has hitherto been employed for such
purposes, and consequently with a great saving in regard of expense...!
The main body of the machine consists of two strong vertical side frames or
standards which are securely fixed on a suitable bed plate or foundation, such frames.
or standards being connected at the top thereof by a cross head or bar for the
support of certain parts of the apparatus. Above the said main body or frame of
the machine is fixed a vertical cylinder in which works a solid piston and piston
rod formed of forged iron, and to the bottom of which is fixed a suitable head or
block; the upward and downward motion of which is controlled and regulated by its
working in suitable grooves in the vertical standards. A steel knife or cutter is
fitted into a dovetailed groove or slot in the said head or block, and fixed therein by
means of a key or wedge. A hollow cast-iron standard of the requisite height is
placed beneath the knife or cutter, the same having a recess cast or formed in the
top thereof for the reception of a block of hard wood which is fitted therein. The
stones are held in position over the said wooden block by means of tongues or other
mechanical contrivances, or by hand, as may be desired, and are cut or dressed by
the action of the knife or cutter.
As a motive power, steam directly applied is preferred, but steam power derived
from a separate engine and communicated by means of suitable connections and
gearing may be used, or hydraulic or water power may be employed. When steam

page_text: is applied in a direct manner, the main valve employed is the ordinary slide valve,
and on each end of the steam chest is cast a small cylinder, which cylinders are fitted
with pistons, the rods of which pass through the main valve. On the side of the
steam chest is a small valve, by which the last-mentioned pistons are worked by
means of a small spindle which passes through the side of the steam chest. On the
head or block of the piston is fitted an upright spindle which passes through a lever
on the valve spindle, or the upright spindle is fitted with bosses, which can be
altered by set screws, so that more or less steam may be admitted to the top or
bottom of the main cylinder, as may be desired.
The machine before described is self-acting, and may be worked at any desired
rate of speed, and it may be observed that modifications may be made in the
arrangement of the said self-acting gear without departing from the principles of our
said Invention.
We will now proceed to refer to the annexed Drawing, from which the nature of
our said Invention will be more clearly understood.
The standard of the machine is shewn at A; B is the cylinder, and C the piston
and rod, which are in one piece; D is the head or block, and E the knife or cutter ;
F is the key or wedge before mentioned; G is the wood block; H is the upright
spindle for working the valves; I, I, are the bosses for working the valves and
giving the length of stroke required; J is the valve lever; K, the valve spindle, and
L, L, the valves; M, M, are the steam ports to the main cylinder; N, N, the exhaust
pipes, and O the steam pipe; P, P, are the slots and grooves in which the block
slides; Q, Q, the glands for the purpose of packing, and R, R, the cross stays for
stengthening the machine.
Having thus described and ascertained the nature of our said Invention and in
what manner the same is to be performed, we would observe in conclusion that
what we consider novel and original and therefore claim as constituting the
Invention secured to us by the said herein-before in part recited Letters Patent,
is, the combination and arrangement of parts and mechanism, substantially as
and for the purposes herein-before described and set forth, or any mere modifications
thereof.
In witness whereof, we, the said Thomas Madderson and Benjamin Wilkinson,
have hereunto set our hands and seals, this Twenty-eighth day of
November, in the year of our Lord One thousand eight hundred and
seventy-seven.
THOMAS MADDERSON.
(L.S.)
BENJAMIN WILKINSON. (L.S.)