AN IMPROVED MACHINE FOR COVERING WIRE WITH INDIA-RUBBER OR COMPOUNDS OF THE SAME OR SIMILAR SUBSTANCES, AND FOR MANUFACTURING TUBES OF SUCH COMPOUNDS OR SUBSTANCES
Year: 1871

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine,
Lake, & Co., Patent Agents, Southampton Buildings, London, for
the Invention of "AN IMPROVED MACHINE FOR COVERING WIRE WITH
INDIA-RUBBER OR COMPOUNDS OF THE SAME OR SIMILAR SUBSTANCES, AND FOR
MANUFACTURING TUBES OF SUCH COMPOUNDS OR SUBSTANCES."-A com-
munication from abroad by A. G. de Wolfe, of Seymour, Con-
necticut, United States of America.
Sealed the 5th January 1872, and dated the 10th August 1871.
PROVISIONAL SPECIFICATION left by the said William Robert Lake
at the Office of the Commissioners of Patents, with his Petition,
on the 10th August 1871.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co.,
5 Patent Agents, Southampton Buildings, London, do hereby declare the
nature of the said Invention for "AN IMPROVED MACHINE FOR COVERING
WIRE WITH INDIA-RUBBER OR COMPOUNDS OF THE SAME OR SIMILAR SUBSTANCES,

page_text: AND FOR MANUFACTURING TUBES OF SUCH COMPOUNDS OR SUBSTANCES," a com-
munication, to be as follows:-
The said Invention relates to a machine which is chiefly designed for
covering telegraphic wires with a protective or insulating substance or
compound, such as india-rubber or gutta percha, or compounds of these
substances, or other gums or gummy compounds; the said machine is
also applicable to the manufacture of tubes of these substances or
compounds. The said machine has a cylinder for containing the
substance or compound in a liquid condition. In this cylinder is a
screw of the same diameter or nearly so as the bore of the said cylinder.
This screw extends through one end of the cylinder, and is supported
in bearings to turn freely within the same. The said screw is rotated
by toothed wheels or other gearing applied to it outside the cylinder.
At one end of the said cylinder I place the die through which the
substance or compound is forced to form the covering or tube, and 1
through which the wire and the said substance pass together when the
machine is employed for covering wire. The said die is arranged at a
right angle to the axis of the cylinder, so that the wire passes trans-
versely across the end of the screw, or at a right angle to its axis,
instead of through the said screw, as in these machines as heretofore
constructed. I prefer that the die should be inserted in a short
extension piece attached to the end of the cylinder, the said piece being
closed by a screw plug or stopper at its outer end, between which and
the end of the screw there should be a space of about two inches more
or less, which space when the machine is working will be kept full of
the gum or other substance by the action of the screw. In a line with
the die and inserted through the opposite side of the extension piece is
a tubular guide through which the wire is admitted and passed to
the die.
The cylinder is preferably constructed with chambers or spaces
surrounding the screw and the die and cvide which sneens and sunnliad

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Robert Lake in the Great Scal Patent
Office on the 9th February 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Tenth day of August, in the year of
our Lord One thousand eight hundred and seventy-one, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Robert Lake, Her special licence
that I, the said William Robert Lake, my executors, administrators,
and assigns, or such others as I, the said William Robert Lake, my
executors, administrators, and assigns, should at any timo agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED
MACHINE FOR COVERING WIRE WITH INDIA-RUBBER OR COMPOUNDS OF THE
SAME OR SIMILAR SUBSTANCES, AND FOR MANUFACTURING TUBES OF SUCH
COMPOUNDS OR SUBSTANCES," a communication to me from abroad by
A. G. de Wolfe, of Seymour, Connecticut, United States of America,
upon the condition (amongst others) that I, the said William Robert
Lake, my executors or administrators, by an instrument in writing
under my, or their, or ono of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed
in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Robert Lake, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and

page_text: by the following statement, reference being had to the accompanying
Drawing forming a part of this Specification.
The said Invention relates to a machine chiefly designed for covering
telegraphic wires with a protective or insulating substance or com-
pound, such as india-rubber or gutta percha, or compounds of these
substances or other gums or gummy compounds. The said machine
is also applicable to the manufacture of tubing of these substances or
compounds. This improved machine has a cylinder for containing
the substance or compound in a liquid condition. In this cylinder is a
screw of the same diameter or nearly so as the bore of the said cylinder.
This screw extends through one end of the cylinder, and is supported
in bearings to turn freely within the same. The said screw is rotated by
toothed wheels or other gearing applied to any convenient part outside
of the cylinder. At one end of the said cylinder I placed the die through
which the substance or compound is forced to form the wire covering
or the tubing, and through which the wire and the said substance pass
together when the machine is employed for covering wire. The said dic
is arranged at a right angle to the axis of the cylinder, so that the
wire passes transversely across the end of the screw or at a right angle
to its axis instead of through the said screw as in machines heretofore
structed and wood for anwering wire

page_text: At
receives motion from any convenient driving shaft. Or if desired other
arrangements of gearing may be employed for operating the screw.
the opposite end of the cylinder a I place the die h. The said dic, as
clearly shown in Figure 2, is arranged at a right angle to the axis of
the cylinder a, so that the wire passes transversely across the end of the
screw 6 or at a right angle to its axis. I prefer that the die / should
be inserted in a short extension piece i attached to the end of the
cylinder a. The said piece i is closed by a screw plug or stopper ¹ at
its outer end, between which and the end 62 of the screw b there should
be a space of about two inches more or less as shown, which space when
the machine is working will be kept full of the gum or other substance
by the action of the screw b. In a line with the die h and inserted
through the opposite side of the extension piece i is a tubular guide j,
through which the wire to be covered is admitted and passed to the die.
The said die and guide are screwed into the piece i, so that they may
be adjusted therein, and the guide is secured by means of screws j¹.
This guide will not be required when the machine is used for making
tubes. The cylinder a is preferably constructed with chambers or
spaces a¹ surrounding the screw b, die h, and guide j, which spaces are
supplied with steam whereby the proper temperature is maintained in
the cylinder a to keep the gum or other substance or compound at the
required consistency; a², a², are the apertures for admitting steam to
these chambers, a³ is an aperture for introducing the gummy or other
substance into the cylinder. At the rear end of the machine I place a
thrust pink which is arranged to receive the end of the screw shaft b¹,
and sustain the same against the back pressure produced by the action
of the screw upon the contents of the cylinders. The said thrust pin is.
formed with a screw thread, and is thereby adjustable in the socket l' of
the bracket fixed on the bed A or other convenient part of the machine.
The said thrust pin is secured when properly adjusted to the shaft b¹ by
the pinching screw and block m, n.
Having thus fully described the said Invention as communicated to
me by my foreign correspondent, and the manner of performing the
same, I wish it understood that I claim, a machine for covering wire
with the above specified substances or compounds or for manufacturing
tubing thereof, provided with a screw working in a cylinder and with a
die and guide, or a die without the guide, arranged in combination with

page_text: the said cylinder across the end of the same, and at a right angle to the
axis of the screw, as herein set forth.
In witness whercof, I, the said William Robert Lake, have hereunto
set my hand and seal, this Ninth day of February, in the year
of our Lord One thousand cight hundred and seventy-two.
Witness,
W. J. LOWE.
WILLIAM ROBT. LAKE. (L.S.)