IMPROVEMENTS IN THE MANUFACTURE OF CORE BARRELS FOR PIPES OR COLUMNS USED EITHER FOR RAILWAY PILES OR COLUMNS, OR FOR WATER PIPES OR SEWERAGE PIPES
Year: 1859

page_text: LETTERS PATENT to Thomas Clarke, of Litchurch Lane, near Derby, in
the County of Derby, and of Staveley, in the County of Derby, Moulder,
for the Invention of "IMPROVEMENTS IN THE MANUFACTURE OF CORE BARRELS
FOR PIPES OR COLUMNS USED EITHER FOR RAILWAY PILES OR COLUMNS, OR FOR
WATER PIPES OR SEWERAGE PIPES."
Sealed the 19th July 1859, and dated the 19th January 1859.
PROVISIONAL SPECIFICATION left by the said Thomas Clarke at the
Office of the Commissioners of Patents, with his Petition, on the 19th
January 1859.
I, THOMAS CLARKE, of Litchurch Lane, near Derby, in the County of
Derby, and of Staveley, in the County of Derby, Moulder, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN THE MANUFACTURE OF
CORE BARRELS POR PIPES OR COLUMNS USED EITHER FOR RAILWAY PILES OR COLUMNS,
OR POR WATER PIPES OR SEWERAGE PIPES," to be as follows:-
My Invention consists of improvements in the manufacture of core barrels
for pipes and columns used either for railway piles or columns, or for water
pipes or sewerage pipes, and is as follows:-Heretofore core barrels have been
made having one row of hinges only, and a loose key or slide, which slide has

page_text: had to be removed every time a fresh casting is made, whereas my Invention
has two rows of hinges, and is without slide or key, but has three stay bars,
which stay bars when loosened, as can be simply and easily done, allow the
core bar to leave the casting without impediment, thereby effecting much
saving of labor, time, and expence.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Clarke in the Great Seal Patent Office on the
19th July 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
CLARKE, of Litchurch Lane, near Derby, in the County of Derby, and of 1
Staveley, in the County of Derby, Moulder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Nineteenth day of January, in the year of our
Lord One thousand eight hundred and fifty-nine, in the twenty-second year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said Thomas Clarke, Her special licence that I, the said
Thomas Clarke, my executors, administrators, and assigns, or such others as
I, the said Thomas Clarke, 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 THE MANUFACTURE OF CORE BARRELS FOR PIPES OR COLUMNS USED EITHER
FOR RAILWAY PILES OR COLUMNS, OR FOR WATER PIPES OR SEWERAGE PIPES," upon
the condition (amongst others) that I, the said Thomas Clarke, 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 Thomas Clarke, 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 and by the fol-

page_text: lowing statement thereof, reference being had to the accompanying Drawings,
and to the letters and figures marked thereon, that is to say:-
My Invention relates to improvements in the manufacture of core barrels
for piles and columns used either for railway piles or columns, or for water
pipes or sewerage pipes. Heretofore core barrels have been constructed with
one row of hinges only and a loose key or slide, which key or slide has had
to be removed every time a fresh casting is produced, whereas according to
this my present Invention I construct a core barrel with "two rows of hinges.
and without a slide or key, but with three stay bars, which stay. bars when
loosened, as can be simply and easily done, allow the core bar to leave the
casting without impediment, thereby effecting considerable saving of labor,
time, and expense.
I now proceed, with reference to the accompanying Drawings, more par-
ticularly to exemplify my said Invention, and the manner in which the same
may be carried into effect.
Figure 1 is an elevation of a two feet core barrel, drawn to a two-inch
scale, with the piece marked A in Figure 2 removed so as to show the cast-
iron hinges at L, the seats for the keying bar B at J, and the overlapping
piece marked M; the slot holes V are for giving vent to the air confined in
the mould. Figure 2 is a plan of the elevation Figure 1, showing the keying
bar B, the hinges L; the overlapping piece M, the seats for the keying bar
at J, and a rod N, passed through the lugs C, for drawing the core barrel out
of the casting; at D is shown the door or piece of the barrel, first displaced
to allow it to collapse. Figure 3 is a sectional elevation of a two-feet barrel,
drawn to a scale of two inches to a foot, for casting pipes and columns with
an internal flange; the arrangement is shown at F, F. The overlapping
piece is as shewn on all the other Figures at M. Figure 4 is a plan at R, S,
of Figure 3, shewing wrought-iron hinges at E, E, which are. necessary to
clear the internal flanges; it also shews the keying bar, as on Figures 2
and 5, the lugs at C and the overlapping piece M, as on all the other
Figures, the door D is also shewn on this Figure. Figure 5 is a half sizó
section of a 10-inch core barrel, arranged with dovetailed arms H to carry a
gudgeon G, so that, if necessary, the core may be struck up horizontally.
For larger size cores the core can be made vertically on a turntable without
the use of arms or gudgeons. In this Figure are shewn at 0, 0, 0, pins for
keeping the arms H in their place while the core is being lifted into a vertical
mould. When these pins are removed, the dovetailed arms can be with-
drawn, and the barrel allowed to collapse. At. B is shewn the keying bar;

page_text: with its seat at J. At I are shewn lugs on the core barrel, by which the
keying bar B can be hinged by passing a pin P through the lugs I and the
bar B. For small core barrels the arrangement with gudgeons can be carried
out by a straight bar with dovetailed ends carrying the gudgeon G. L shews:
the hinges, as on Figures 1 and 2; D, doors, as on Figures 2, 4, 5, 6; and C,
lugs, as on Figures 1, 2, 4, 5, 6; M, overlapping piece, as on all the Figures.
Figure 6 is a section of the same barrel as Figure 5 when the keying bar B
has been withdrawn and the barrel collapsed ready for being drawn out of
the casting. At L is shewn the hinge of the barrel; at K, the space for the
dovetailed arms; at M, the overlapping piece, as in the other Figures; at C,
the lugs, as in Figures 1, 2, 4, 5, 6; and at D, the door, as in Figures 2, 4,
5, 6. In this Figure is shewn the loam as it will be left in the casting after
the removal of the core barrel.
Among the advantages of this Invention are the entire abolition of the use
of hay or straw bands in the manufacture of cores for pipes and columns;
economy in drying, the first coat of loam being dried by the heat of the barrel
when in use; considerable facility in removing the barrel from the casting,
even if the casting is cold; thus saving the cost of hay and straw, of spinning
bands, and of a large amount of coal for drying cores.
And having now described the nature of my said Invention, and in
what manner the same is to be performed, I declare that I claim as my'
Invention,
First, the division of a core barrel into three parts, so as to obviate the
use of straw or hay bands in the manufacture of cores for circular or other
shaped pipes and columns.
Secondly, the use of a loose or hinged keying bar, as shewn at B in the
accompanying Drawings, which bar on its removal will allow the barrel to
collapse.
Thirdly, the use of a triangular or parallel dovetailed arm to carry a
gudgeon, by the employment of which a core can be made on a collapsing
barrel, either horizontally or vertically.
Fourthly, the bevelling and overlapping of the smallest division of the said
core barrel marked D, and described as the door on the accompanying
Drawings, which said bevel is to keep the other portions of the barrel in
their proper position.
Fifthly, the use of a double row of hinges in the manufacture of core
barrels for casting circular or other shaped pipes or columns, as represented
in the Drawings hereunto annexed.

page_text: Sixthly, the arrangement, as shewn at F, F, on Figure 3 of the Drawings
hereunto annexed, whereby circular or other shaped castings can be made
with an internal flange.
In witness whereof, I, the said Thomas Clarke, have hereunto set my
hand and seal, this Fifteenth day of July, in the year of our Lord
One thousand eight hundred and fifty-nine.
Witness,
GEO. JON. ROBINSON,
Patent Agent,
Nottingham.
THOMAS CLARKE. (L.S.)