IMPROVEMENTS IN AND ÅDDADAMWO FAR MOEDING DING BIDANG A " APPARATUS FOR MOULDING PIPES, ELBOWS, AND OTHER SIMILAR ARTICLES
Year: 1875

page_text: LETTERS PATENT to Benjamin Harlow, of Macclesfield, in the County
of Chester, Engineer, for the Invention of “IMPROVEMENTS IN AND
ÅDDADAMWO FAR MOEDING DING BIDANG
A "
APPARATUS FOR MOULDING PIPES, ELBOWS, AND OTHER SIMILAR ARTICLES..
Sealed the 16th June 1876, and dated the 18th December 1875.
PROVISIONAL SPECIFICATION left by the said Benjamin Harlow at
the Office of the Commissioners of Patents, with his Petition, on
the 18th December 1875.
I, BENJAMIN HARLOW, of Macclesfield, in the County of Chester,
Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN AND APPARATUS FOR MOULDING PIPES, ELBOWS, AND OTHER
SIMILAR ARTICLES," to be as follows:---
.
This Invention relates to a rapid method of moulding pipes, elbows,
and other articles which are required to be reproduced in large
quantities, and consists in constructing a metallic platform, the upper
surface of which is formed perfectly level, and the pattern (which may

page_text: be only a fac simile of half the article being moulded) is arranged to fit
accurately into a corresponding recess formed in this platform, and to
project so far above its upper surface as practically to form the lower
half of a moulding box, this pattern being supported underneath upon
two or more eccentrics or cranks, and mounted upon a. longitudinal
shaft passing from end to end of the platform.
The moulding operation is performed as follows:-The one half of
the moulding box is inverted and placed upon this platform in the same
manner as if such platform constituted the lower half of the moulding
box, and the sand is introduced and rammed into such moulding box in
the ordinary manner. This done the longitudinal shaft is turned
partially round upon its axis, and so by the action of the eccentrics or
cranks the pattern is lowered into its recess, and so becomes steadily
detached from the mould, when the moulding box is ready for removal.
The pattern being again raised by reversing the shaft to its original
position another moulding box may be similarly treated, and thus when
the two halves of the moulding box are placed together a perfect mould
is obtained.
This method of moulding permits several pipes, elbows, or bends or
other similar articles to be moulded together, and this either, with
flanges or with spigot or socketed ends, which may be formed if
desirable with "chills " so as to avoid the necessity of turning, facing,
or boring.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Benjamin Harlow in the Great Seal Patent Office 28
on the 17th June 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, BENJAMIN
HARLOW, of Macclesfield, in the County of Chester, Engineer, send
greeting.
WHEREAS Her most Excellent. Majesty Queen Victoria, by Her 30
Letters Patent, bearing date the Eighteenth day of December, in the
year of our Lord One thousand. eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Benjamin Harlow, Her special

page_text: licence, that I, the said Benjamin Harlow, my executors, administra-
tors, and assigns, or such others as I, the said Benjamin Harlow, 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
"IMPROVEMENTS IN AND APPARATUS FOR MOULDING PIPES, ELBOWS, AND OTHER
SIMILAR ARTICLES," upon the condition (amongst others) that I, the said
Benjamin Harlow, 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 Benjamin Harlow, 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 :-
This Invention relates to a rapid method of moulding pipes, elbows,
and other articles which are required to be reproduced in large
quantities, and consists in constructing a metallic platform, the upper
surface of which is formed perfectly level, and the pattern (which may
be only a fac simile of half the article being moulded) is arranged to fit
accurately into a corresponding recess formed in this platform, and to
project so far above its upper surface as practically to form the lower
half of a moulding box, this pattern being supported underneath upon
two or more eccentrics or cranks and mounted upon a longitudinal
shaft passing from end to end of the platform.
And in order that this my said Invention may be the more readily
understood and carried into practical effect I have hereunto annexed
a Drawing of a moulding apparatus constructed in accordance with my
Invention.
Fig. 1 represents a side view, Fig. 2 an end sectional view, Fig. 3 a plan,
and Fig: 4 a perspective view of my improved pipe moulding apparatus,
similar letters marked on the several views being used to indicate
similar parts,

page_text: A is a cast-iron platform, which is faced perfectly level in its upper
surface A¹; B is the pattern or fac simile of the pipe to be moulded,
which fits accurately into a corresponding shaped recess formed in the
upper surface A¹ of the platform A, and is capable of being lowered
thereinto: For this purpose the pattern B rests upon arms C (seen
dotted in Fig. 1) branching from eccentrics D, which are mounted upon
the longitudinal shaft E. This shaft E extends through the platform
at one end, as illustrated, and is there provided with a lever handle F.
for partially turning such shaft, and thereby raising and lowering the
pattern B by the action of the eccentrics D.
The moulding operation is performed as follows:-The pattern B.
being raised to its highest position so as to project above the upper
surface of the platform A, as seen more clearly in Fig. 1, the one half
of the moulding box H (see Fig. 2) is inverted and placed upon this
platform, as seen dotted in Fig. 4, in the same manner as if such plat-
form constituted the lower half of the moulding box, the ends of the
moulding box being arranged to drop over the core prints or bar G at
either end, and thus secure such molding box accurately in position,
whilst the sand is introduced and rammed in in the ordinary manner.
This done the longitudinal shaft E is turned partially round upon its
axis, and so by the action of the eccentric D the pattern is lowered
into its recess, and become steadily detached from the mould, as seen
in Fig. 2, when the moulding box is ready for removal. The pattern
being again raised by reversing the shaft to its original position another
half moulding box may be similarly treated, and thus when the two
halves of the moulding box are placed together a perfect mould is
obtained.
This method of moulding permits several pipes, elbows, or bends, or
other similar articles to be moulded together, and thus either with
flanges or with spigot or socketed ends, which may be formed if
desirable with "chills" so as to avoid the necessity of turning, facing, or
boring.
Having thus particularly described and ascertained the nature of this
my said Invention, together with the best methods with which I am
acquainted for carrying the same into practical effect, I wish it to be
understood that I claim, the arrangement and construction of moulding:
apparatus for pipe elbows and other articles, whereby the pattern may,

page_text: be lowered into a recess by means of eccentrics, as and for the purposes
herein-before described and illustrated on the accompanying Drawing.
In witness whereof, I, the said Benjamin Harlow, have hereunto
set my hand and seal, this 16th day of June, in the year of our
Lord 1876.