Improvements in and relating to Machinery for Covering Telegraph, Telephone, and Electric Cables and Wires with Lead or Metallic Compounds, also applicable for the Manufacture of Metallic Pipes and the like.
Year: 1893

page_text: Date of Application, 19th Aug., 1893
Complete Specification Left, 19th May, 1894-Accepted, 23rd June, 1894
- PROVISIONAL SPECIFICATION.
Improvements in and relating to Machinery for Covering Telegraph,
Telephone, and Electric Cables and Wires with Lead or Metallic
Compounds, also applicable for the Manufacture of Metallic
Pipes and the like.
We GEORGE EDWARD and THOMAS EDWARD both of Hercules Iron Works,
Johnstone, Renfrewshire, Engineers, do hereby declare the nature of this invention
to be as follows:-
Our invention relates to machinery, of the lead press type, for covering
telegraph, telephone, and electric wires or cables with lead or suitable metallic
compounds.
In carrying out our invention we construct an hydraulic lead press with a
container which is suitably mounted on a turn table, or the like, on or near the
bottom of the lead press, so as to be capable of being turned or rotated. This
container has two or more chambers for the reception of the molten lead or other
metal. The hydraulic cylinder is, preferably, fitted on top of the press, the lead
ram or plunger, which, as usual, is hollow, being fixed to the water piston. The
ram or plunger has an extension block made in one or more parts and fitted with a
hollow core and spherical, partly spherical, or convex shaped die which is
adjustable by means of one or more screws from the outside so that cables and
wires can be covered with lead or other suitable metal in long lengths and of any
desired thickness.
With the apparatus, whilst one lead chamber is being emptied another is being
filled ready to come under the ram for the next down stroke, and in this manner a
nearly continuous flow of metal can be forced through the ram so that the operation
of covering or coating the wires or cables is practically continuous.
If desired the lead ram may be movable or stationary, and the container be fitted
on or to the plunger or piston of the hydraulic cylinder and be reciprocated.
In this case the lead ram would, preferably, be secured to a crosshead at the top of
the press and the hydraulic cylinder form the base or bottom of the press. Or the
lead container can be fitted on or to the crosshead at the top of the press, and the
lead ram be secured to the piston of the hydraulic cylinder.
Under another arrangement, adapted for new or existing lead pipe machines, the
cores and dies are placed horizontally or otherwise in an extension of the lead ram
or plunger. The lead container is placed upon a resting block on the top of
a water piston or ram of a lead pipe machine or an hydraulic press in a manner
similar to that of using a lead container in making lead pipes. The lead ram,
which is fixed to the top crosshead or block, is hollow with an extension forming a
chamber wherein the cores for forming the inside and the dies for forming the
outside of the pipe, or the thickness of lead covering as the case may be, are placed.
The die for forming the outside of the pipe or covering is of a spherical, partly
spherical, or convex shape for the purpose of bringing the die concentric with the
core bar for forming the inside of the pipe or covering and is regulated or adjusted
by means of screws from the outside whereby an equal thickness of metal can
be formed.

page_text: The combination of the hollow core bar and die may be placed either in an
extension of the lead ram or of the lead container for the purpose of covering
telegraph and other wires and cables.
Dated this 18th day of August 1893.
H. D. FITZPATRICK,
70, Wellington Street, Glasgow, Agent.
COMPLETE SPECIFICATION
Improvements in and relating to Machinery for Covering Telegraph,
Telephone, and Electric Cables and Wires with Lead or Metallic
Compounds, also applicable for the Manufacture of Metallic
Pipes and the like.
We, GEORGE EDWARD and THOMAS EDWARD, both of Hercules Iron Works,
Johnstone, Renfrewshire, Engineers, 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 machinery, of the lead press type, for covering
telegraph, telephone, and electric wires or cables with lead or suitable metallic
compounds.
with a
In carrying out our invention we construct an hydraulic lead press
container which is suitably mounted on a turn table, or the like, on or near the
bottom of the lead press, so as to be capable of being turned or rotated. This
container has, preferably, two or more chambers for the reception of the molten lead
or other metal. The hydraulic cylinder is, preferably, fitted on top of the press, the
lead ram or plunger, which, as usual, is bollow, being fixed to the water piston.
The ram or plunger has an extension block made in one or more parts and fitted
with a hollow core and spherical, partly spherical, or convex shaped die which is
adjustable by means of one or more screws from the outside so that cables and wires
can be covered with lead or other suitable metal in long lengths and of any
desired thickness.
With the apparatus, whilst one lead chamber is being emptied another is being
filled ready to come under the ram for the next down stroke, and in this manner a
nearly continuous flow of metal can be forced through the ram so that the operation
of covering or coating the wires or cables is practically continuous.
If desired the lead ram may be movable or stationary, and the container be fitted
on or to the plunger or piston of the hydraulic cylinder and be reciprocated. In
this case the lead ram would, preferably, be secured to a crosshead at the top of
the press and the hydraulic cylinder form the base or bottom of the press.
Under another arrangement, adapted for new or existing lead pipe machines the
cores and dies are placed horizontally or otherwise in an extension of the lead ram
or plunger. The lead container is placed upon a resting block on the top of a water
piston or ram of a lead pipe machine or an hydraulic press in a manner similar to
that of using a lead container in making lead pipes. The lead ram, which is fixed
to the top crosshead or block, is hollow with an extension forming a chamber wherein
the cores for forming the inside and the dies for forming the outside of the pipe,
or the thickness of lead covering as the case may be are placed. The die for
forming the outside of the pipe or covering is of a spherical, partly spherical, or
convex shape for the purpose of bringing the die concentric with the core bar for
forming the inside of the pipe or covering and is regulated or adjusted by means of
screws from the outside whereby an equal thickness of metal can be formed.
The combination of the hollow core bar and die may be placed either in an
extension of the lead ram or of the lead container for the purpose of covering
telegraph and other wires and cables.

page_text: And in order that our said invention may be properly understood we have here
unto appended two explanatory sheets of drawings, whereon,
Fig. 1 is a front elevation, partly in section of the machine.
Fig. 2 is a cross section on the line x-x Fig. 1.
Fig. 3 is a front elevation partly in section of a slightly modified form of the
machine.
Fig. 4 is a part front elevation and part vertical section of another modification
of the machine.
Fig. 5 is a plan of Fig. 4.
Fig. 6 is a part side elevation and part vertical section of the same machine.
Fig. 7 is a vertical section; Fig. 8 a cross section; Fig. 9 a front elevation and:
Fig. 10 a side elevation to an enlarged scale of the ram of the machine.
Referring to the drawings whereon the same reference letters wherever repeated
indicate the same or similar parts.
The machine as shown at Figs. 1 & 2 consists of an hydraulic lead press having
a container a bolted to a turntable b which is fitted in the bottom of the press and
is capable of being rotated on the pivot c. The container as shown at Fig. 2 has
two chambers d, d for the reception of molten lead or other metal. As shown at
Fig. 1 the hydraulic cylinder e is fitted on top of the press and the ram or
plunger is secured to the water piston f of said cylinder. g is the water pipe.
The ram or plunger has an extension block h which as shown is fitted with a partly
spherical or convex shaped die i retained in position by a plate ; secured to the
extension block by screw studs k (see Figs. 7 to 10). 1, are die blocks inserted in
the extension and m is an annular chamber or passage into which the lead passes
from the passage way n in the ram f'. o is the core and p is the follower which is.
secured in place and holds the core to its work. As will be seen the chamber m is
formed by a circular groove or recess made in the inner block and a tapered
hollow made in the outer block which is screwed in place. This outer block is
concaved for the reception of the convex die i.
With this arrangement the die i can be adjusted to any desired position by means
of the screws k and the core o can in like manner be adjusted by screwing up the
follower p.
With this apparatus the table a is turned round on its pivot c until the full
chamber d of the container (Figs. 1 and 2) is directly under the ram f¹ when fluid
pressure is admitted to the cylinder e and the ram f¹ is caused to descend and force
the lead up the passage way n into the lead chamber m from which it issues through
the annular passage left between the core o and die i on to the wire or cable to be
covered. In Fig. 1 y represents a cable entering the machine and q' the same
cable leaving the machine after being covered. r, are the usual guide pulleys.
Whilst the chamber d of the container a is being emptied the chamber d¹ is being
filled and when the chamber d has been emptied and the ram has risen up above
the container the table a is turned so as to bring the full chamber d' under the ram
ready for the next downstroke. By filling, in this manner, one chamber whilst the
other is being emptied a nearly continuous flow of metal can be forced through the
ram. The ram is made to perform its upstroke much quicker than the downstroke
so as to render the operation of coating practically continuous.
The turntable a is held in the proper position when the ram is descending by
means of a catch in much the same manner as an ordinary turntable for railways.
In Fig. 3 the hydraulic ram is fitted at the bottom of and forms the base of the
press whilst the container is secured to its piston. In this case the lead ram with
its die and core is fitted to a cross head on the top of the press and is stationary.
The reciprocation of the container, in this case, performs the same duties as the
reciprocating lead ram Fig. 1.
In Figs. 4, 5 and 6 the hydraulic ram forms the base of the press and its piston f
has a flat table t on it. Sliding on this table in guides u, u¹ is the container a which
has two chambers d, d' as before. In this case however the container is moved
back and forward, so as to bring one or other of the chambers d, d' under the lead

page_text: ט
ram f, on the table t by means of a pinion the teeth of which mesh with a rack o'
on the guide u. The pinion, which is mounted on a pin or stud w fitted in the side
of the container is turned by the hand wheel x. By turning the hand wheel the
container can be reciprocated back and forward. In Fig. 4 the chamber d of the
container is shown as being emptied whilst the chamber d' is in position for being
.filled.
Although we have described and shown a convex die j as used with the machine,
it is to be understood that, if desired, an ordinary die may be used.
Instead of making the die i as shown it may be of spherical shape with a passage
way through it.
In this case the plate ; would be concaved on its inner side so as
to fit on the die and hold it in place.
Although we prefer to use only two chambers in the container three or more may
'be used.
In some cases, if so desired, the sliding container (Figs. 4 to 6) may be made
with only one lead chamber in it. The lead chamber of the container, in such
cases, is at the down stroke of the ram quickly brought under it, and, again, at the
upstroke quickly withdrawn to be recharged. The container Figs. 1 to 3 may be
made with a single chamber and operated in the same manner. In these cases the
-chambers may, if desired, be charged with cold blocks.
Parts of the apparatus may be altered or modified without departing from the
principle of the invention.
Instead of using lead in the press any other well known and suitable metallic
"compound, may be used.
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
-consider novel and desire to claim is :-
1. The general arrangement and combination of parts of the machine for covering
telegraph, telephone and electric cables and wires with lead or metallic compounds,
or for the manufacture of metallic pipes and the like, substantially as hereinbefore
described and shown under modifications on the drawings annexed.
2. In a machine of the class set forth, a press having the ram or plunger, fitted with
a core and die, at the top and the container at the bottom, said container being so
fitted or mounted in place that its lead chamber or chambers can as desired be
moved underneath or away from the ram or plunger, substantially as hereinbefore
set forth.
3. In a machine of the class set forth, a container a for lead or other metal,
having two or more chambers d, d¹ in it said container being capable of movement
in a horizontal plane, so as to bring one or other of its chambers under the ram or
plunger, substantially as herein before described with reference to the drawings
annexed and for the purpose set forth.
4. In a machine for the purpose herein before set forth, a stationary or recipro-
cating hollow ram or plunger situated at the top of the press and provided with a
core and die, substantially as hereinbefore described with reference to the
drawings annexed.
5. In a machine of the class set forth, the application and use of an adjustable
spherical, partly spherical or convex die, substantially as hereinbefore described
with reference to the drawings annexed.
Dated this 8th day of May 1894.
H. D. FITZPATRICK,
70, Wellington Street, Glasgow, Agent.