Improvements in Machines or Apparatus for Making Sanitary Pipe Traps with Curved Arms.
Year: 1897

page_text: Date of Application, 24th Dec., 1897
Complete Specification Left, 13th Sept., 1898-Accepted, 29th Oct., 1898
PROVISIONAL SPECIFICATION.
Improvements in Machines or Apparatus for Making Sanitary Pipe
Traps with Curved Arms.
We, THOMAS STANLEY GREEN, of 31, Ashby Road, Burton-on-Trent, in the
County of Derby, Manufacturer, and SYDNEY WRAGG, of Common Side Ironworks,
Church Gresley, in the County of Derby aforesaid, Ironfounder, do hereby declare
the nature of this invention to be as follows:-
The object of our invention is to make a sanitary pipe trap with a curved arm
complete at one operation of the machine and thus considerably expedite the
manufacture of such traps.
In carrying out our said invention we employ a central core for the body of the
trap, this core which we will call the body-core is placed in an inverted position
and preferably fixed to the bed of the machine, the upper part of it (when in this
position) is suitably prepared to receive one end of an arm-core consisting of a
number of segments fitted together and being provided on their outer ends with
keys adapted to fit into key ways on an internal ring the inner end of the said
arm-core is provided internally with a plain ring to keep the segments in the
true circular cross section when pressure is being applied, as will be hereinafter
explained, and is rebated or otherwise fitted into the top of the body-core. About
these two cores are arranged two sliding halves of a die which when closed up
form a moulding box between which and the cores the trap is formed the said
half dies having first been charged with clay or the like as will be readily under-
stood; the meeting faces of the two halves of the die are rebated into each other
or otherwise suitably formed to prevent the egress of clay when pressure is being
brought to bear upon them there is also a semicircular print on each half of the
die set up with springs and adapted to engage the outer end of the arm-core so
that as the two halves of the die are pressed together the prints prevent the egress
of clay at the end and at the same time give way according to the pressure im-
parted to the sides of the die, any suitable device being used for imparting the
said pressure and moving the half dies to and fro but forming no part of the
present invention.
The inner plain ring on the arm carries a lug or the like on its body-core side
which engages in a fork or its equivalent on the end of a pivotted rod or lever
inside the body-core this lever is operated from below when the trap has been
pressed and withdraws the inner ring from the arm-core the outer ring is now
also withdrawn and the segments of the arm-core removed, one of the said seg-
ments being preferably formed with parallel sides for convenience in being
removed first, the two halves of the die are now drawn back and the gulley left
on the body-core from which it is removed completely formed. The inner ring
is now removed from the fork on the lever or the like inside the body-core by
turning it round and bringing the edge of the lug through the fork, the segments
of the arm are again placed on the rings and the whole operation is repeated,
077

page_text: suitable lubricant being used for ensuring the gulley readily leaving the different
parts of the apparatus.
The segments of the arm-core are preferably made of aluminium for the sake
of lightness.
D
41 00. l
Dahon 1907
W. SWINDELL,
Agent for the Applicants.
Improvements in Machines or Apparatus for Making Sanitary Pipe
Traps with Curved Arms.
We, THOMAS STANLEY GREEN, of 31, Ashby Road, Burton-on-Trent, in the
County of Derby, Manufacturer, and SYDNEY 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 a curved arm
complete at one operation of the machine and thus considerably expedite the
manufacture of such traps.
In describing our 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 apparatus; Figure 2 is a section on line bb of Figure 1: Figure 3 is
a section on line cc of Figure 1 and Figure 4 is an enlargement of the end ring D
and different sections of the arm core as will be hereinafter explained.
In carrying out our said invention we employ a central core A for the body
of the trap, this core which we will call the body-core is placed in an inverted
position and preferably fixed to the bed B of the machine, the upper part of it
(when in this position) is suitably prepared to receive one end of an arm-core
consisting of a number of segments C, C1, C2, C3, C, fitting together and being
provided on their outer ends with keys C adapted to fit into key-ways on an
internal ring 1 the inner end of the said arm-core is provided mternally with a
plain ring E to keep the segments in the true circular cross section when pressure
is being applied, as will be hereinafter explained, and is rebated or otherwise fitted
into the top of the body-core at F. About these two cores are arranged two sliding
halves G, G¹, of a die which when closed up form a moulding box between which
and the cores the trap is formed, the said half dies having first been charged with
clay or the like as will be readily understood; the meeting faces of the two
halves of the die are rebated as at H into each other or otherwise suitably formed
to prevent the egress of clay when pressure is being brought to bear upon them
there is also a semi-circular print I on each half of the die as shewn on Figure 3
sot up with springs K and adapted to engage the outer end of the arm-core so
that as the two halves of the die are pressed together the prints prevent the egress
of clay at the end and at the same time give way according to the pressure imparted
to the sides of the die, any suitable device may be used for imparting the said
pressure and moving the half dies to and fro, but forming no part of the present
invention.
The inner plain ring E on the arm carries a lug L or the like on its body-core
side which engages in a fork M. or its equivalent on the end of a pivotted rod or
lever N inside the body-core this lever is operated from below when the trap has
been pressed and withdraws the inner ring from the arm-core the outer ring is
now also withdrawn and the segments of the arm-core removed, one of the said

page_text: segments C being preferably formed with parallel sides for convenience in being
removed first, the two halves of the die are now drawn back and the gulley left
on the body-core from which it is removed completely formed. The inner ring E
is now removed from the fork on the lever N or the like inside the body-core by
turning it round and bringing the edge of the lug through the fork, the segments
of the arm are again placed on the rings D and E and the whole operation repeated,
suitable lubricant being used for ensuring the gulley readily leaving the different
parts of the apparatus.
The segments of the arm-core are preferably made of aluminium for the sake of
lightness and need not necessarily be five in number.
Having now particularly described and ascertained the nature of our said
invention, 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 with curved arms
the employment of a mould in two halves G, G, ¿dapted to slide backwards and
forwards, in combination with a body-core A and an arm-core in keyed seg-
ments C, C1, C2, C3, C4, adapted to fit into key ways on an outer ring D and about
a plain inner ring E the latter being adapted to be removed by means of the
forked lever or rod N, the half moulds carrying spring prints I substantially as
and for the purposes described.
1
101
1000
W. SWINDELL,
Imperial Chambers, Albert Street, Derby,
Agent for the Applicants.