CERTAIN MACHINERY FOR MIXING THE SUBSTANCES USED IN THE FORMATION OF CONCRETE AND OTHER PROVISIONAL SPECIFICATION
Year: 1855

page_text: LETTERS PATENT to Henry Lee the younger, of Lambeth, in the County
of Surrey, Contractor, and John Gilbert, of Hackney Road, in the
County of Middlesex, Engineer, for the Invention of "CERTAIN MACHINERY
FOR MIXING THE SUBSTANCES USED IN THE FORMATION OF CONCRETE AND OTHER
PROVISIONAL SPECIFICATION left by the said Henry Lee and John
Gilbert at the Office of the Commissioners of Patents, with their Petition,
on the 2nd May 1855.
We, HENRY LEE the younger, of Lambeth, in the County of Surrey, Con-
tractor, and JonN GILBERT, of Hackney Road, in the County of Middlesex,
Engineer, do hereby declare the nature of the said Invention for "CERTAIN
MACHINERY FOR MIXING THE SUBSTANCES USED IN THE FORMATION OF CONCRETE AND
OTHER LIKE SUBSTANCES" to be as follows:-
Our Invention consists in mounting a cylinder or case upon a shaft, and
in providing such cylinder or case with an aperture and cover, which forms
both the feed and exit passages for the materials. Rotary motion is commu-
nicated to the cylinder, and after having been continued a sufficient time, the
cylinder is stopped with the aperture downwards, the cover is removed, and
the concrete runs out. Half a rotation is given to the cylinder, a fresh charge
is inserted, the cover placed over the aperture, and the operation repeated.

page_text: We find the best effect to be produced by passing a shaft through a cylinder,
similar in form to the cylinder of a steam engine, placed at an angle; that is,
we pass the shaft from the bottom of the side, through the centre, and out at
the top of the opposite side, whereby the materials are not only turned over,
but are also thrown from end to end on the cylinder being caused to revolve.
We form the feed and exit aperture in one side of the cylinder cover. In some
cases we arm the shaft where it passes through the cylinder with blades, for
the more effectually mixing the materials under treatment.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Lee and John Gilbert, in the Great Seal Patent Office
on the 2nd November 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, HENRY
LEE the younger, of Lambeth, in the County of Surrey, Contractor, and JOHN
GILBERT, of Hackney Road, in the County of Middlesex, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of May, in the year of our Lord
One thousand eight hundred and fifty-five, in the eighteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said Henry Lee and John Gilbert, Her special licence that we, the
said Henry Lee and John Gilbert, our executors, administrators and assigns,
or such others as we, the said Henry Lee and John Gilbert, our 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 "CERTAIN MACHINERY FOR MIXING THE
SUBSTANCES USED IN THE FORMATION OF CONCRETE AND OTHER LIKE SUBSTANCES,"
upon the condition (amongst others) that we, the said Henry Lee and John
Gilbert, or one of us, by an instrument in writing under our hands and seals, or
under the hand and seal of one of us, should particularly describe and ascer-
tain 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 we, the said Henry Lee and John Gilbert, do
hereby declare the nature of our said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained in
and by the following statement thereof, reference being had to the Drawings
hereunto annexed, that is to say:-
Our Invention consists in mounting a cylinder or case upon a shaft, and in
providing such cylinder or case with an aperture and cover, which aperture
forms both the feed and exit passages for the materials. Rotary motion is
communicated to the cylinder, and after having been continued a sufficient
time, the cylinder is stopped with the aperture downwards, the cover is
removed, and the concrete runs out. Half a revolution is given to the cylinder,
a fresh charge is inserted, the cover placed over the aperture, and the operation
repeated. We find the best effect to be produced by passing a shaft through
a cylinder, similar in form to the cylinder of a steam engine, placed at an
angle or diagonally; that is, we pass the shaft from the bottom of the side,
through the centre, and out at the top of the opposite side, whereby the
materials are not only turned over, but are also thrown from end to end on
the cylinder being caused to revolve. We form the feed and exit aperture in
one side of the cylinder cover. In some cases we arm the shaft where it
passes through the cylinder with blades, for the more effectually mixing the
materials under treatment.
In the Drawings hereunto annexed we have shewn the manner in which we
carry our Invention into effect. Figure 1 is a front elevation, Figure 2 an
end elevation, and Figure 3 a plan, of a machine for mixing concrete and
other similar substances. Similar letters of reference indicate similar parts in
all the Figures. A, A, are two brick piers or elevations, with sufficient space
between them to admit of a waggon B passing along upon the rails a, a; C, C,
is a strong framework of wood or other suitable material, firmly bolted together
and resting upon the brickwork A; D, D, is a second framework above the
framework C; E, E, are a pair of cylinders mounted diagonally upon the
shafts F, F. These shafts pass through the cylinders, as shewn, and are sup-
ported in suitable plummer blocks bolted upon the framework C. G, G, are
bevil wheels, keyed upon the shafts F, and geared into by the bevil pinions
H, H, upon the shafts I, I; K, K, are spur wheels, keyed upon the outer ends*
of the shafts I, I, and set in motion by the spur pinions L, L, keyed upon the
opposite ends of the shaft M. This shaft M is driven by the strap pulley N,
and thus serves, by the arrangement of gearing just described, to set in motion
the cylinders E, by the revolution of which the materials contained therein
become thoroughly amalgamated. 0,0, are a pair of hoppers, mounted in the

page_text: framework D, and directly above the cylinders E. These hoppers contain the
materials for forming the concrete in an unmixed state, and are for the purpose
of feeding such materials into the cylinders, being provided with suitable
slides b, b, opened and shut by means of the handles and rods c, c. P, P, are
slides and apertures in the end of the cylinder covers, which are opened to
receive a charge from the hoppers when the cylinders are in the position repre-
sented in Figure 2. The slides in the hopper and cylinder are closed when a
sufficient quantity of material has been fed into the cylinder, and after the
requisite number of revolutions have been given to the cylinder, they are
alternately stopped in a position the reverse to that represented in Figure 2,
when the slides are opened, and the contents run off into the waggon B.
In the Drawings we have shewn a pair of cylinders mounted in the frame-
work, and have provided the shafts F, F, with clutch boxes d and levers 6, so
that either of the cylinders can be stopped at pleasure. By this means, while
one cylinder is being filled with materials the other cylinder can be emptied,
the waggon B being shifted to and fro along the rails a, a, so as alternately to
receive the contents of the cylinders, and thereby to render the process con-
tinuous. We do not, however, confine ourselves to this arrangement, as only
one cylinder may, if desired, be employed, or a greater number than two may
be mounted in a line, or disposed in any other convenient or desired positions.
And having now described the nature of our said Invention, and in what
manner the same is to be performed, we declare that what we claim is,-
First, the mixing of the substances used in the formation of concrete and
other like substances, by means of machinery.
And, second, we claim the peculiar arrangement and combination of
machinery herein-before described, and represented in the Drawings hereunto
annexed, for the purpose of mixing the substances used in the formation of
concrete and other like substances.
In witness whereof, I, the said John Gilbert, for myself and on behalf
of the the said Henry Lee, have hereunto set my hand and seal, this
Second day of November, One thousand eight hundred and fifty-five.
NO
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