A Machine for Making Sanitary Pipe Traps with Curved Arm complete at one operation.
Year: 1897

page_text: Date of Application, 30th Apr., 1897
Complete Specification Left, 17th Jan., 1898-Accepted, 26th Mar.,
1898
A Machine for Making Sanitary Pipe Traps with Curved Arm
complete at one operation.
THOMAS STANLEY GREEN, Earthenware Manufacturer, Church Gresley, Burton-
on-Trent, SYDNEY WRAGG, Engineer, Church Gresley, Burton-on-Trent, do hereby
declare the nature of this invention to be as follows:-
A metal two part mould in which to make sanitary earthenware traps by
pressure, with the curved arm and the body of the trap complete in one piece at
one process.
"
The feature of the invention is a collapseable core within the curved arm
during the process of making, that can be withdrawn in segments, after pressure
has been brought to bear and the trap made.
Specification of a method of pressing a curved cylindrical arm on pottery ware,
the ware coming from pressing machine in one piece, to be applied to pot and
sanitary wares, more especially to the common T trap or gulley. To press the
T, trap, Fig. I, two dies or moulds are to be used, Figs. II & III, one fitting
the other when placed together, thus forming the outside form of the T trap, the
inside square, part B, Fig. I, being formed in the ordinary way by inserting,
when being pressed, a square casing, B, Fig. IV, between the two dies at
B, B Fig. II & III, such casing to have a circle through on one side, as shewn
at D, Fig. IV to receive a core to form the inside round hole of arm A, Fig. I,
such core for arm A to be made by segments built together in three or more
longitudinal segments, which when together form the inside shape of the arm to
be pressed, the segments being held together by two loose rings, one at each
end of segments, fitting inside the casing and being held to the casing by a
a dovetailed
dovetailed key on each end of each segment, fitting into
keyway on each of the loose rings, to release the segments after the article
is pressed the two rings are withdrawn from position, one into the square
casing B Fig. IV the other from the outlet end of article pressed, the rings being
taken out, allow the segments to be withdrawn through the outlet end of article
pressed. For example Fig. V shews end view of one loose ring and method of
fixing segments to form the circle, in this case five segments are used, as being a
convenient number for a 4" T trap, the part marked R is the loose ring, with
the dovetailed keyways shewn, the part outside the ring R shews the five segments
Nos. 1, 2, 3, 4, & 5, with the keys on the ring R, thus clasping & holding the
segments together for putting in the mould for pressing. After pressing to
release this casing, the R is withdrawn, & segment No. 1, being made so that
it will be released by this, falls along the line A, A, & thus allowing it to be taken
out through the outlet end of arm, No. 1 being out, Nos. 2 & 5 can be released
and taken out in the same manner, & then Nos. 3 & 4, when all the five segments

page_text: are taken out, the trap may then be taken from mould, the segments are then
again built up and keyed in position by the loose ring and again placed in the
mould. Fig. 6 shews the method of preventing the segments getting out of posi-
tion or sliding down too far, by having a shoulder sunk on each of the segments
at their lower ends only, as shewn at S, S, Fig. 6, such shoulder butts against the
square casing forming the square hole of trap, and so kept in position by them.
Dated this 30th day of April 1897.
THOMAS STANLEY GREEN,
SYDNEY WRAGG,
Church Gresley, Burton-on-Trent.
A Machine for Making Sanitary Pipe Traps with Curved Arm
complete at one operation.
We, THOMAS STANLEY GREEN, of 31, Ashby Road, Burton-on-Trent, in the
County of Derby, Manufacturer, and SIDNEY WRAGG, of Common Side Ironworks,
Church Gresley, in the County of Derby aforesaid, Ironfounder, do hereby declare
the nature of this invention and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:-
The object of our invention is to make a sanitary pipe trap with curved arm
at one operation and thus to facilitate and expedite the manufacture of such traps.
In describing our said invention reference will be had to the accompanying
sheet of drawings upon which Figure 1 is a section on line a, a of Figure 2 shewing
our improved device or apparatus. Figure 2 is a section on line b, b of Figure 1.
Figure 3 is an enlargement of one of the end rings as will be hereinafter explained.
In carrying out our said invention we employ a mould preferably in halves A, A'
in which is first placed a quantity of clay or the like, these half moulds are brought
together and enclose between them a body core B and an arm core C and in the
space between the former and the two latter the sanitary pipe trap is formed,
any suitable device being used for pressing together the halves A A¹ of the
moulds.
The arm core C is made up of a number of sections C₁, C³, C3, C4, C5 carrying
keys C at their ends fitting in key ways in the rings E and F a rebated joint
being made between the said arm core and body core at G.
In putting the device together the sections of the arm core are first fitted
together on the rings and the end of the said core placed inside the body core in
the inverted position as shewn. When the trap has been formed the inner ring F
is removed from the inside of the body core then the outer ring E and the sections
of the arm core drawn out one by one, the section C¹ being formed with parallel
sides for convenience in being removed first.
Although the arm core is shewn in five segments it will be understood that we
do not bind ourselves to that or any number.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:
In a machine or apparatus for making sanitary pipe traps the employment of
an arm core in segments carrying keys at the ends adapted to fit into keyways in

page_text: a loose ring at each end in combination with a body core and dies or moulds
in sections substantially as described and illustrated.
Datod thin 15th day of L
1000
W. SWINDELL,
Imperial Chambers, Albert Street, Derby,
Agent for the Applicants.
W. SWINDELL,
Imperial Chambers, Albert Street, Derby,
Agent for the Applicants.