AN IMPROVED MACHINE FOR CUTTING OUT BRICKS AND DRAIN PIPES
Year: 1860

page_text: LETTERS PATENT to Charles Stevens, Manager of the British & Foreign
Office for Patents, 1B, Welbeck Street, Cavendish Square, in the County
of Middlesex, for the Invention of "AN IMPROVED MACHINE FOR CUTTING
OUT BRICKS AND DRAIN PIPES."-A communication from abroad by Louis.
PROVISIONAL SPECIFICATION left by the said Charles Stevens at the
Office of the Commissioners of Patents, with his Petition, on the 15th
October 1860.
I, CHARLES STEVENS, Manager of the British & Foreign Office for Patents,
1³, Welbeck Street, Cavendish Square, in the County of Middlesex, do hereby,
declare the nature of the said Invention for "AN IMPROVED MACHINE FOR.
CUTTING OUT BRICKS & DRAIN PIPES," (& that it has been communicated to me
from abroad by Louis Constant Desaint, of 42, Rue Laffite, Paris, in the
Empire of France,) to be as follows:-
By means of the present machine bricks & drain pipes of various sizes and
forms are cut out of calcarious or other stone. The machine consists of a.
cogged driving wheel, which gearing with other cogwork causes four drills to.
revolve which bore the bricks and of two pullies over which a ribbon saw
passes, the pullies being put in movement by the gearwork above mentioned.
The saw cuts out the bricks and pipes of any required size or shape, the drills,
above mentioned perforating them with holes of any required diameter. The

page_text: stone is placed on a carriage or slide, which brings it within the action of the
saw, which is kept at a proper tension by means of an adjusting screw.
The machine is made to work in a receptacle filled with water, which being
kept in a state of agitation by the rotation of the machine washes the stone
dust and renders it perfectly white. This white product, on being subjected
to oil or coal tar at a high temperature, becomes more adherent and less
liable to be acted on by frost. The bricks can be made of any size and
shape, and the dimensions of the holes also may be varied. The bricks
can also be grooved by means of the saw to facilitate the adherence of the
mortar.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed.
by the said Charles Stevens in the Great Seal Patent Office on the
13th April 1861..
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
STEVENS, Manager of the British & Foreign Office for Patents, 1. Welbeck
Street, Cavendish Square, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters.
Patent, bearing date the Fifteenth day of October, in the year of our Lord
One thousand eight hundred and sixty, in the twenty-fourth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Charles Stevens, Her special licence that I, the said Charles
Stevens, my executors, administrators, and assigns, or such others as I, the
said Charles Stevens, 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 "AN
IMPROVED MACHINE FOR CUTTING OUT BRICKS AND DRAIN PIPES," a communication
to me from abroad by Louis Constant Desaint, of 42, Rue Laffitte, Paris, in the
Empire of France, upon the condition (amongst others) that I, the said
Charles Stevens, my executors or administrators, by an instrument in writing.
under , 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.

page_text: NOW KNOW YE, that I, the said Charles Stevens, do hereby declare:
the nature of my said Invention, and in what manner the same is to be per-:
formed, to be particularly described and ascertained in and by the following
statement & accompanying Drawings, that is to say :-
The object of the present Invention is: a machine for. cutting, boring, &>
drilling calcarious stones to be used for building & other purposes. the bricks.
cut by the machine, as well as the holes made in them, varying in form & size
according to the purposes to which they are applied. The machine is com-.
posed of a cogged driving wheel, which gearing with other cogwork.causes,
four drills to revolve. Of two pullies over which a ribbon saw passes, the.
pullies being put in motion by the gearwork above mentioned. The saw cuts,
out the bricks & pipes of any required size or shape, the drills above mentioned
perforating them with holes of any required diameter. The stone is placed
on a carriage or slide, which brings it within the action of the saw, which is
kept at a proper tension by means of an adjusting screw. The machine is
made to work in a receptacle filled with water, which being kept in a state of
agitation by the rotation of the machine, washes the stone dust & renders it
perfectly white.
This white product, on being subjected, when dry, to the
action of oil or coal tar at a high temperature, becomes more adherent &
less liable to be acted on by frost. The bricks can be grooved by means of
the saw to facilitate the adherence of the mortar.
A description of the accompanying Drawings at the natural size will be
sufficient to fully explain the nature & working of the machine.
Fig. 1 represents a front view of the machine; Fig. 2 represents a sectional
view following the line X, Y, of Fig. 3; Fig. 3 represents a sectional view
following the line Z, Z, of Fig. 2. Similar letters & numbers represent the
same parts in the various Figures when they recur.
A represents a cogged driving wheel communicating its motion to the cog
wheels b, c, d, e, f; B, C, two pullies over the endless saw S
passes, which
cuts the bricks from the calcarious stones; these pullies are put in motion by
the gearwork above mentioned; V, adjusting screw to tighten the saw S;
R, slide on which the stone is conducted to the saw; i, j, k, l, m, n, o, p, gear
work put in motion by the cog wheel A; T, T, T, T, four drills serving to
perforate the bricks.
Fig. 4 represents two drainage pipes square on the outside & pierced with
round holes; they are attached together by means of a socket; Fig. 5 repre-
sents an end view of the pipe; Fig. 6 represents two pipes with an oblique
joint, they have no socket; Fig. 7 represents an end view of the pipe; Fig. 8
represents a tubular brick; Fig. 9, end view; Figs. 10 & 11 are also bricks

page_text: of another size; Fig. 13 is still smaller for making partitions, as it may be
seen Fig. 12; Fig. 12, a light partition in which the holes of the bricks are:
placed crosswise to make the plaster adhere better; Fig. 14 represents the flat
side of a brick or stone grooved by the saw; the grooves can be straight or
crossed about an inch in depth more or less close to make the plaster
adhère better..
Having thus described my Invention, I wish it to be understood that I do.
not confine myself to the above details, as the same may be varied; but what I:
claim & desire to secure by Letters Patent is, the general arrangement of appa-
ratuses as above described & represented in the accompanying Drawings, to be
used for the purposes above mentioned.
CHARLES STEVENS. (L.B.)