IMPROVED MACHINERY FOR MOULDING PIPES
Year: 1864

page_text: LETTERS PATENT to Peter Barr, of Milton Iron Works, West Hartlepool,
in the County of Durham, for the Invention of "IMPROVED MACHINERY
FOR MOULDING PIPES."
Sealed the 3rd March 1865, and dated the 22nd September 1864.
PROVISIONAL SPECIFICATION left by the said Peter Barr at the Office
of the Commissioners of Patents, with his Petition, on the 22nd
September 1864.
I, PETER BARR, of Milton Iron Works, West Hartlepool, in the County of
Durham, do hereby declare the nature of the said Invention for "IMPROVED
MACHINERY FOR MOULDING PIPES," to be as follows:-
The object of this Invention is to facilitate the moulding of pipes without
the use of skilled labour. To this end I construct a novel arrangement of
machinery, by the aid of which I am enabled to raise the pattern to a deter-
minate position in the mould box, and after the ramming of the sand to
withdraw it therefrom without disturbing the impression it has formed, and
leave it suspended ready for being again put into action to repeat the impression.
in another mould box.
The machine consists of a strong hollow horizontal frame or table carried
by standards bolted to a bed plate. Fitted to the horizontal frame are profile
plates, which are the counterpart figure of the pattern to be moulded. These
plates are adjusted so as to allow the pattern to rise up between them and
close up the space between the edges of the plates. The pattern when in its

page_text: lowest position rests in semicircular bearings or hoops affixed to the under
side of the framing, and at the opposite ends thereof. The upward movement
of the pattern is limited by semicircular caps or hoops affixed to the upper
side of the framing. A longitudinal horizontal shaft mounted in bearings in
the standards (which bearings are capable of receiving a vertical adjustment
to suit the various requirements of the machine) carries a pair or more of
cams, which are affixed to the shaft by clamping screws to admit of their
adjustment axially on the shaft.; these excentrics serve to raise and lower the
pattern as required, and they are put into action by a hand lever on the
longitudinal shaft.
In operating with the machine, a half mould box is placed upon the table,
and the pattern is raised by the hand lever operating the excentrics until one
half of it stands above the face of the profile plates; the sand is then rammed
into the box in the usual way. This being done the band lever is reversed,
and the pattern then drops into the hoops, which prevent it from falling too
far. The mould box (which is the bottom half of the mould) is then lifted off
the machine, and put upon a bank ready to receive the core. The hand lever
is then brought back to its former. position, which throws the pattern up by
the excentrics, so that the half of it projects above the plates ready to receive
the top half of the box, it being prevented from going too far by the upper
hoops, and so soon as the sand has been rammed into the box and the pattern
withdrawn, the box is taken off and placed on the other part on the bank,
which completes the mould.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Peter Barr in the Great Seal Patent Office on the
22nd March 1865.
it
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PETER
BARR, of Milton Iron Works, West Hartlepool, in the County of Durham,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of September, in the year of our
Lord One thousand eight hundred and sixty-four, in the twenty-eighth year
of. Her reign, did, for Herself; Her heirs and successors, give and grant unto
me, the said Peter Barr, Her special license that I, the said Peter
Barr, my executors, administrators, and assigns, or such others as I,
the said Peter Barr, my, executors, administrators, and assigns, should at
.

page_text: 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
"IMPROVED MACHINERY. FOR MOULDING PIPES," upon the condition (amongst
others) that I, the said Peter Barr, by an instrument in writing under my
hand and seal, should particularly describe and ascertain the nature of my.
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 Peter Barr, do hereby declare the.
nature of the 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, reférence being had to the Drawing hereunto annexed, and to the.
letters and figures marked thereon (that is to say)::—
This Invention relates to a növel arrangement of parts for facilitating.the.
moulding of pipes of various sizes and forms in the same machine without the.
use of skilled labor. To this end I adopt the 'well-known system of a rising.
and falling pattern, which pattern I raise to a determinate position in the.
mould box, and after the ramming of the sand withdraw it therefrom without
disturbing the impression it has formed, and I leave it suspended ready for,
being again put into action to repeat the impression in another mould box..
In the accompanying Drawing, Fig. 1 shews iny improved pipe moulding.
machine in side elevation; Fig. 2 is a plan view of the same; and Fig. 3 is
an end.elevation.
The machine consists of, a strong hollow horizontal frame or table A, A,
carried by standards B, B, B. Fitted to the horizontal frame A are profile
plates C, C, which are the counterpart figure of the pattern to be moulded..
These plates are so adjusted that the pattern when it rises up between them
shall close up the space between the edges of the plates. c¹ is the pattern of
the pipe to be moulded and counterpart of the profile plates. The vertical
movement of the pattern is limited by semicircular caps or hooks D; D',.
attached to the opposite ends of the plates C, C. Thus the pattern when in
it's lowest position rests in the semicircular hoops D as in bearings, and when
lifted the pattern is borne up against the semicircular caps or hoops D!, which,.
while they allow the semidiameter of the pattern to project beyond the profile.
plates; prevent its axis from rising above the upper face of the profile plates.
E is a longitudinal horizontal shaft mounted in bearings F in the standards B, B,.

page_text: (which bearings are capable of receiving a vertical adjustment to suit the
various requirements of the machine). The shaft E carries two or more
cams G, G, which are affixed to the shaft by clamping screws to admit of
their-adjustment.axially thereon.. Upon these excentrics the pattern bears,.
and they serve to raise and lower it into and out of the mould box.as required.
They are put into action by means of a hand lever E' on the longitudinal
shaft E. B, B, are tie rods for connecting the standards firmly together.
In operating with the machine, a half mould box or flask H.is placed upon:
the profile plates C, C, so as to surround the pattern.; the pattern is then>
raised by the hand lever operating the excentrics until one half of, it stands
above-the-face-of the-profile plates, it being-prevented-from-rising higher-as-
above explained; the sand or loam. is then rapimed'into the box or flask H
in the usual way. When this ramming is completed, the position of the hand
lever E' is reversed, and the pattern. then drops into the hoops D, which.
retain it in a position ready for again entering the mould box. An impression
being thus made in the overlying sand or loam, the mould box H (which is.
the bottom half of the mould)> is now to be lifted off the machine and put
upon a bank ready to receive the core. To prepare for framing the other half:
mould, the hand lever is brought back to its former position, which causes.
the excentrics to throw up the pattern so that it projects above the profile.
plates as before, ready to receive the top half of the box, the ramming in of
the sand or foam is then repeated, and so soon as this is effected the position:
is lowered clear of the sand. The box is then taken off and. placed on the
other part on the bank, and thus the mould is completed.
When it is required to adapt the machine to casting larger or smaller pipes.
it is only necessary to change the profile plates, and replace them by appro-
priate ones, which are in like-manner to be secured to the table of the machine,
and to change the pattern for one corresponding to the fresh pattern plates.
The half hoops or caps and bearings for the pattern must also correspond to
the diameter of the pattern, as will be well understood. When any great
difference in-diameter of pipe to be moulded occurs, that is, in changing from
moulding large pipes to small, and vice versa, it will be desirable to change
the elevation of the excentrics; this is effected by raising or lowering.the.
bearings of their shaft by means of the screws I.
From the above explanation it will be understood that my improved
machine admits of pipes of various proportions being readily moulded therein,
and that by the aid of unskilled labor.
. Having now set forth the nature of my Invention of "Improved Machinery
for Moulding Pipes," and explained the manner of carrying the same into
.

page_text: effect, I wish it to be understood that under the above in part recited Letters
Patent I claim the arrangement and combination of parts above described for
facilitating the moulding of pipes.
In witness whereof, I, the said Peter Barr, have hereunto set my hand
and seal, the Twentieth day of March, in the year of our Lord One
thousand eight hundred and sixty-five.
PETER BARR. (L.S.)