IMPROVEMENTS IN MACHINERY FOR MOULDING CLAY FOR MAKING BRICKS, TILES, AND OTHER ANALOGOUS ARTICLES FROM PLASTIC SUBSTANCES." PROVISIONAL SPECIFICATION
Year: 1867

page_text: LETTERS PATENT to Charles Henry Murray, of Loman Street, Southwark,
in the County of Surrey, Machinist, for the Invention of "IMPROVEMENTS
IN MACHINERY FOR MOULDING CLAY FOR MAKING BRICKS, TILES, AND OTHER
ANALOGOUS ARTICLES FROM PLASTIC SUBSTANCES."
PROVISIONAL SPECIFICATION left by the said Charles Henry Murray
at the Office of the Commissioners of Patents, with his Petition, on the
25th July 1867.
I, CHARLES HENRY MURRAY, of Loman Street, Southwark, in the County
of Surrey, Machinist, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN MACHINERY FOR MOULDING CLAY FOR MAKING BRICKS, TILES,
AND OTHER ANALOGOUS ARTICLES FROM PLASTIC SUBSTANCES," to be as follows;
My Invention of "Improvements in Machinery for Moulding Clay for
Making Bricks, Tiles, and other analogous Articles from Plastic Substances"
has for its object to so construct the die through which the clay or other
plastic substance is delivered and to lubricate the faces thereof that the clay
will be delivered with less friction and consequently with a more even surface
than heretofore. To this end the sides of the die are made hollow and
removeable, and are supplied with oil or other liquid lubricating material or
compound, which is caused to exude from the hollow vessel through saw cuts,
slits, or holes made in the face of the vessel, which is covered with felt, woollen

page_text: cloth, or other porous material which will prevent the oil or other lubricant
from running out too quickly. These hollow vessels which form the sides of
the die are fitted in their places, and are secured by means of a screw, by
loosening which the vessels may at any time be removed, cleaned, and replaced
without deranging any of the other parts of the machine.
In order to cause the lubricating liquid to pass through the felt or porous
fabric with which the faces of the hollow vessels are covered the reservoir
which supplies these vessels is placed several feet above them. The felt or
porous covering of the hollow vessels is compressed by the clamps and
tightening screws between the fixed and stationary parts of the die so as to
pack these joints and render them water-tight.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Charles Henry Murray in the Great Seal Patent Office on
the 24th January 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
HENRY MURRAY, of Loman Street, Southwark, in the County of Surrey,
Machinist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of July, in the year of our Lord One
thousand eight hundred and sixty-seven, in the thirty-first year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Charles Henry Murray, Her special licence that I, the said Charles Henry
Murray, my executors, administrators, and assigns, or such others as I, the
said Charles Henry Murray, 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 "IMPROVE-
MENTS IN MACHINERY FOR MOULDING CLAY FOR MAKING BRICKS, TILES, AND OTHER
ANALOGOUS ARTICLES FROM PLASTIC SUBSTANCES," upon the condition (amongst
others) that I, the said Charles Henry Murray, 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.

page_text: NOW KNOW YE, that 1, the said Charles Henry Murray, do hereby
declare the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement, reference being had to the Drawing hereunto annexed, and to the
letters and figures marked thereon (that is to say):-
:-
My Invention of "Improvements in Machinery for Moulding Clay for
Making Bricks, Tiles, and other analogous Articles from Plastic Substances"
has for its object to so construct the die through which the clay or other
plastic substance is delivered and to lubricate the faces thereof that the clay
will be delivered with less friction, and consequently with a smoother and more
even surface than heretofore.
The apparatus which I employ for the purposes of my Invention and the
mode of applying the same is shewn in the accompanying Drawing, in which
Fig. 1 is a front elevation of the mouth or die of a brick-making machine
shewing my improvement adapted thereto; Fig. 2 is a side view thereof; and
Fig. 8 is a horizontal section. a, a, is the front plate of the machine, and
to which my improved die b, b, is attached in any convenient manner.
The sides 6', 6', of the die 6 are made hollow or in the form of boxes, and
are removable; these boxes 61, which are shewn detached in front elevation
at Fig. 4, and in section at Fig. 5, are supplied with oil or other liquid
lubricating material or compound, which is caused to exude from the hollow
vessels or boxes b', b', through saw cuts, slits, or holes made in the face of the
vessel, as shewn at Fig. 4. The perforated faces of the boxes b¹ are covered
with felt, woollen cloth, or other porous material, as indicated by red color at
Fig. 5. This fabric will prevent the oil or other lubricant from running out
too quickly, and the oil will perfectly saturate the fabric. These hollow vessels
which form the sides of the die, as shewn in Fig. 3, are fitted in their places,
and are secured by means of screws c, c, which pass through lugs secured to
or fixed on to the stationary part a. By loosening the screws c, c, the boxes
or vessels b¹, b, may at any time be removed, cleaned, and replaced without
deranging any of the other parts of the machine. In order to cause the
lubricating liquid to pass through the felt or porous fabric with which the
faces of the boxes or hollow vessels 6¹ are covered the reservoir d which
supplies these vessels with the lubricating fluid is placed at any convenient
distance above them. The felt or porous covering of the boxes or hollow
vessels 6¹ is compressed by the clamps and tightening screws c between the
fixed and stationary parts of the die, so as to pack these joints and render
them perfectly water-tight. It will now be understood that the clay in passing
out of the machine and in exuding from the die in the direction of the arrow

page_text: in Fig. 3 will rub up against the felt or woollen covering of the boxes or
hollow vessels 6¹, and will carry away with it a very thin film of lubricating
material, and will therefore be delivered with a perfectly smooth and even
surface. In practice it has not been found necessary to adapt the lubricating
arrangement to either the top or bottom of the die, but it will be evident that
if desired this may be done in the manner shewn with relation to the sides.
Having now described my Invention of "Improvements in Machinery for
Moulding Clay for Making Bricks, Tiles, and other analogous Articles from
Plastic Substances," and having explained the manner of carrying the same
into effect, I claim as the Invention secured to me by Letters Patent, as
aforesaid, constructing the dies or apertures in brick-making machines through
which the plastic material is delivered with moveable hollow boxes or vessels
provided with perforated sides, and supplied with any suitable lubricant, which
by exuding through the perforations in the boxes will lubricate.
In witness whereof, I, the said Charles Henry Murray, have hereunto
set my hand and seal, the Twenty-third day of January, in the year
of our Lord One thousand eight hundred and sixty-eight.
Witness,
J. W. MOFFATT,
66, Chancery Lane.
CHARLES HENRY MURRAY. (L.S.)