Improvements in the Manufacture of Pipes or Conduits for Electric Cables or other purposes, and in the Means or Apparatus employed therein.
Year: 1892

page_text: Date of Application, 29th Dec., 1892
Complete Specification Left, 29th Sept., 1893-Accepted, 4th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Pipes or Conduits for Electric
Cables or other purposes, and in the Means or Apparatus
employed therein.
We GEORGE CROMPTON of the Stanton Iron Works Company's Works Stanton
Gate near Nottingham Chairman of the said Company and JAMES CHAMBERS of
the same place Foundry Manager of the said Works do hereby declare the nature
of this invention to be as follows:-
The pipes or conduits suitable for electric cables and for other purposes are cast
vertically the process of preparation for casting being as under.
A ramming plate is dowelled to the underside of suitable flasks and on this
plate are dowels to keep the pattern in centre of or in suitable position in the flask.
A loose socket pattern is used which slides over the top of the pattern, the outer
edge of the socket pattern is preferably extended above what is required for the
casting to form a guide for the socket core.
After the pattern is moulded, the ramming plate is exchanged for a casting plate
having a number of circular or other suitable taper seats for seating the cores.
The seat plate is recessed to form the bead at the spigot end of pipe and to form
the round or equivalent nosing on each division between the cells. At the socket
end these roundings are formed in the socket core which slipping down to a shoulder
on the cell core forms a continuous surface of sand to cast against, thus preventing
the formation of fin.
The socket core is formed in a core box having plugs or equivalents therefor
fixed in the bottom for the purpose of forming holes through the core so as to allow
of the socket core being passed over the cell cores when they are in position.
The core is made sufficiently large to fill the socket mould above the top of the
pipe.
A core board is used to form the cell cores and is fixed by a hinged rocker on a
bottom foundation board or surface on which is fixed a shaft with formers attached.
The rocker hearings allow the core board to move as the formers revolve against
it; the said movement giving the hexagon shape desired preferably to the core.
The former shaft and core bar revolve at an equal speed being geared together
by equal sized or equivalently operating tooth wheels or gearing. A weight and
bell crank or other equivalent is used to keep the core board up to the formers.
Dated the 29th day of December. 1892.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Pipes or Conduits for Electric
Cables or other purposes, and in the Means or Apparatus
employed therein.
We GEORGE CROMPTON of the Stanton Iron Works Company's Works Stanton
Gate near Nottingham Chairman of the said Company, and JAMES CHAMBERS of
the same place Foundry Manager of the said Works 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 pipes or conduits suitable for electric cables and for other purposes are cast
vertically in a pit the process of preparation for casting being as under.
Fig. 1 shews a vertical sectional view of a flask, divided in the drawing vertically
1 Price 8d1

page_text: in two equal halves the left hand half indicating the parts arranged in position for
the first portion of the process or with the pattern moulded and the right hand half
the parts as arranged for the latter portion that is to say with the cores in position
of the same respectively taken on the line 1-1 Fig. 2 which figure shews a plan
view of the socket end of the flask and parts shewn by Fig. 1.
Fig. 3 is a vertical section of the core box for the socket core.
Fig. 4 is a plan view of the casting plate E separately, shewing the taper seatings
into which the spigot ends of the cores are received and the recesses which form
the round nosings on the cell divisions.
Fig. 5 is a cross section to an enlarged scale of the cell core making apparatus
shewn in plan view Fig. 7 taken about the line 2-2 of said fig.
Fig. 6 is another part sectional view drawn to the same scale as Fig. 5 and at
about the line 3-3 of Fig. 7 and shewing the core board K and one of the rockers I.
This invention is adapted amongst a variety of other purposes for use in the
manufacture of cellular conduits according to the Specification of Patent granted
to Frederick Davis and Rookes Evelyn Bell Crompton dated the First day of
February 1892 No. 1878 one form of such conduits having seven main ways or
cells and two minor passages for electrical cable purposes as shewn by end view.
Fig. 8 and plan view Fig. 9 shewing the opposite ends of the same, but we make
no claim to such form of conduit itself.
A ramming plate A is dowelled or otherwise fastened to the underside of
flasks A¹ and on this plate are dowels B one only of the two being herein
shewn to keep the pattern B¹ centrally of the flask.reference being had to the
left hand half of Fig. 1.
A loose socket pattern C is used which slides over the top of the pattern B¹
the outer edge of the socket pattern is extended above what is required for
the casting, as at D, to form a guide for the socket core.
After the pattern is moulded the ramming plate A is exchanged for a casting
plate E see right hand half of Fig. 1 having a number of circular taper seats F
for seating the cores F¹. The seat plate E is recessed at X to form the bead
at the spigot ends of the pipes and to form the round nosings Y on each
division between the cells. At the socket end these roundings Y are formed in
the socket core; the socket core, guided by ends of cell core bars slips down
to a shoulder Z on the cell core, thus forming a continuous surface of sand to.
cast against, and thereby preventing the formation of fin.
The socket core is formed in a core box G (see Fig. 3) having plugs Hor
equivalents therefor fixed in the bottom H₁ for the purpose of forming holes
through the core so as to allow of the socket core being passed over the cell
cores when they are in position.
The core is made sufficiently deep at I see Figs. 1 and 3 to fill the socket
mould above the top of the pipe at D Fig. 1.
The core board K is used to form the cell cores and is fixed by hinged
rockers L on a bottom foundation board M which also carries a shaft N with
formers N' attached. The rocker bearings allow the core board K to move as
the former N revolves against the antifriction runner K', the said movement
giving the hexagon shape of the former to the core F'. The former shaft N
and the core bar P revolve at an equal speed being geared together by equal
sized tooth wheels O indicated in part only."
A weight W and bell crank lever R, are used to keep the core board K
arm K with its antifriction runner K up to the former N in its revolutions
so as to transmit correctly the reciprocating motion to the operating end of the
core board K.
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 :-
1. The method of and arrangement or combination of parts of apparatus for

page_text: preparing moulds for the manufacture of pipes or conduits for electric cables
and other purposes substantially as set forth.
2. The method of and apparatus for the manufacture of pipes or conduits for
electric cables and other purposes by first moulding the pattern and then adding
the additional part moulds thereto substantially as and for the purposes set
forth and shewn in the drawings.
3. The combination or arrangement and use of the parts of apparatus for
forming the cell cores of pipes or conduits as set forth with respect to Figs. 5, 6
and 7.
Dated the 28th day of September 1893.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicants.