Improvements in Sanitary Pipe Machines.
Year: 1897

page_text: Date of Application, 13th Mar., 1897-Accepted, 8th May, 1897
COMPLETE SPECIFICATION.
Improvements in Sanitary Pipe Machines.
We, JOHN SAMUEL WORSHY DAVIS of Moira in the County of Leicester,
Engineer, JOSEPH STALEY of Coppice Side, Church Gresley in the County of
Derby, Manager of Sanitary Pipe Works, and JOSEPH PARKER of Moira
aforesaid, Enginewright, 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 :-
Our invention relates to certain improvements in sanitary pipe machines whereby
pipes of a sharp bend or radius, and more particularly what are known in the
trade as "knuckle" bend pipes, may be formed by mechanical means, as the clay
or other composition passes through the die. These knuckle bend pipes have
hitherto been generally formed in moulds of plaster or the like, which is not only
expensive but does not always lead to a perfectly shaped bend. The object of our
invention is to overcome these difficulties.
In describing our invention reference will be had to the accompanying sheet of
drawings; similar letters of reference on the different figures being used to
indicate corresponding parts.
Figure 1 is a plan in two halves on lines a. a., b. b. of Figure 2.
Figure 2 is a vertical section on line c. c. of Figure 1.
It will be understood that some of the parts illustrated on the accompanying
drawings and described herein are common to different classes of sanitary pipe
machines but are necessary for the proper explanation of our invention.
In carrying out our said invention we employ any suitable form of socketting
die A which may be fastened by a joint pin to the table C, this table is vertically
movable, suitable guides and balance weights being employed as is well known in
sanitary pipe machines, a loose ring B fits into the socketting die above mentioned
and may be either in halves or sections for convenience in removing it from the
socket as will be hereinafter explained; any suitable handles B₁ being formed
thereon for convenience in so removing or replacing the sections. A curved plate D
is secured with set pins or other means on the die plate E inside the barrel H down
which the clay or the like descends to the die, this curved plate is made of various
shapes or radii according to the shape or radius of each different bend pipe it is
wished to produce.
The action of the apparatus is as follows:-
The table C with the socketting die is raised up to the die plate E and held
there by any suitable means as is the case with ordinary socketting machines, the
machine is set in motion and the clay is forced down between the die-plate E and
the centre F into the space between the socketting die A. and the ring B, when this
space is filled up the support of, or under, the table C is taken away and it is
allowed to descend with the socketting die A.
The sections of the loose ring B are now taken away by swinging or sliding them
on either side and the clay passing down the barrel comes into contact with the
curved plate D and is impeded in its progress on that side, consequently more clay
passes down the barrel on the opposite side, the result of which is that as the clay
emerges from the die it takes the direction of the curved arrow on Figure 2 and
the desired bend is formed. Any well known device, such as a radial arm carrying
a wire may be used under the die plate E for cutting off the bend pipe.

page_text: We do not wish to bind ourselves to any particular method of opening or closing
the sections of the ring B for instance it may be hinged as at B2 if desired the pin
of the hinge being secured to the die plate, or, it may be arranged to slide apart
in sections running in suitable ways under the die plate E or again it may be
formed in sections to be completely detached from the other parts of the machine,
and handles B¹ may be provided for convenience in making the above operations,
we do not wish to bind ourselves to any form of joint between the said sections nor
yet to any particular method of securing them together.
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 :-
The improvements in sanitary pipe machines consisting of a loose or detachable
ring B in sections, a curved plate or its equivalent D fixed to the die plate E, in
combination with the ordinary parts of a sanitary pipe machine substantially as
and for the purposes described and illustrated.
Dated this 19th dan of March 1907
W. SWINDELL,
Imperial Chambers, Albert Street, Derby, Agent for the Applicants.