IMPROVEMENTS IN TOOLS FOR SECURING TUBES IN THE PLATES AND FOR OTHER PURPOSES WHERE CONCENTRATED POWER OR ADJUSTMENT IS NECESSARY."
Year: 1865

page_text: LETTERS PATENT to Richard Taylor Nelson Howey, Engineer, 46, Blenheim
Street, Newcastle-upon-Tyne, for the Invention. of." IMPROVEMENTS IN
TOOLS FOR SECURING TUBES IN THE PLATES AND FOR OTHER PURPOSES WHERE
CONCENTRATED POWER OR ADJUSTMENT IS NECESSARY."
PROVISIONAL SPECIFICATION left by the said Richard Taylor Nelson
Howey at the Office of the Commissioners of. Patents, with his Petition,
on the 26th September 1865.
I, RICHARD TAYLOR NELSON, HOWEY, 46, Blenheim Street, Newcastle-on-
Tyne, do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN TOOLS FOR SECURING TUBES IN TUBE PLATES AND FOR OTHER PURPOSES WHERE
CONCENTRATED POWER OR ADJUSTMENT IS NECESSARY," to be as follows:-
As made for securing tubes in tube plates, the improvements consist of a
tapered mandril of iron or steel, on which a screw is cut from one end to the
other of equal pitch, and which serewed mandril works into an expanding
nut, in which also a thread is cut to the same taper and pitch as that of the
mandril. The amount of taper on the mandril is about of an inch for
6" length. The thread is either square or round or angular, a square
thread with the top and bottom slightly rounded is preferred, and can be cut
in an ordinary screw cutting lathe. The larger end of the mandril is fitted
to receive a wrench or ratchet brace, by which the power is applied. The nut
is of brass or steel, steel preferred, and is divided into five or six segments, after
the manner of the expanding nut used before for the same purpose, and is
kept together by steel or india-rubber rings let into grooves cut in the circum-

page_text: ference of the nut and at each end, sufficient length being left in the middle
of the nut to swell out the tube against the tube plate. The action of the
tool is as follows:-The mandril is screwed into the nut, and the nut is
inserted into the tube end. The mandril is screwed through the nut, causing
the nut to expand, and secures the tube by compression against the tube plate.
When sufficiently expanded the mandril is unscrewed and the nut slackened
till it can be withdrawn out of the tube, when the process is repeated on the
next tube.
The advantage claimed is, that in the ordinary mode a hammer is employed,
and that serious damage may be done to the tube plates by the blows
necessary to drive in the ordinary mandril, whereas by use of a screwed
mandril working into an expanding nut no great strain is put on to the tube
plate; the expanding screw can also be used in confined places where it is
not possible to use a hammer with any effect. The principle of an expanding
nut is not claimed as new, but only the application of a tapered screw to the
mandril and nut.
As means for concentrated power the tool may be used for working the
punch of a punching machine; also for working the stamp or die of machines
for stamping or striking coins or medals, or for impressing or compressing
anything.
As means of adjustment it may be usefully applied for adjusting or
tightening the springs or packing rings of pistons of engines, or for tightening
up the brasses or working parts of machinery, such as the brasses of locomo-
tive or other engine connecting rods, especially in cases where room is not
sufficient for applying the ordinary key and cottar. Also for adjusting the
knives or cutters of boring mills or knifing machines.
In all these cases the tool is the same in form and action, having the
mandril as in the tubing apparatus, but the nut being cut into two parts or
segments, one of which is fixed and the other being attached to the punch of
the punching machine, or the die, the spring, the brass, or the knife, in the
different cases quoted above.
SPECIFICATION in pursuance of the conditions. of the Letters Patent, filed
by the said Richard Taylor Nelson Howey in the. Great Seal Patent
Office, on the 26th March 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD 35
TAYLOR NELSON HOWEX, Engineer, 46, Blenheim Street, Newcastle-on-Tyne,
send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of September, in the year of our Lord
One thousand eight hundred and sixty-six, in the twenty-ninth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Richard Taylor Nelson Howey, Her special licence that I, the said Richard
Taylor Nelson Howey, my executors, administrators, and assigns, or such others
as I, the said Richard Taylor Nelson Howey, my executors, administrators,
and assigns, should at any time 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 "IMPROVEMENTS IN TOOLS FOR SECURING TUBES IN TUBE PLATES
AND FOR OTHER PURPOSES WHERE CONCENTRATED POWER OR ADJUSTMENT IS
NECESSARY," upon the condition (amongst others) that I, the said Richard
Taylor Nelson Howey, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature, of the said
, 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 Richard Taylor Nelson Howey,
do hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
The tool as made for the purpose of securing tubes by coning or dovetailing
their ends consists of a male and female screw mandril, the screw thread
being cut to a suitable pitch by a lathe or other suitable means. The male is a
solid cone screwed externally, and the female, which is traversed by the male,
a hollow or truncated cone, screwed internally and turned up externally. The
female or nut when thus turned is cut into a number of segments, by pre-
ference five or six, dividing it in, the direction of its length or axis; these
segments are held together by means of elastic rings or washers of vulcanized
india-rubber, or an expanding coil of steel. The smaller end of the outer cone
or nut is made a little less in diameter than the internal diameter of the pipe,
the length being regulated as circumstances may require. The segments
may be made of steel, iron, or brass, steel being preferred, and their outer
surfaces may also be ribbed when required. The male portion of the mandril
is fitted at the larger end to receive a lever key, wench, or ratchet brace lever,
by which the power is applied.

page_text: The mode of using the tool is as follows:-The tube being placed in
position the mandril is inserted into its end, until the female segments have
a sufficient hold on the inner surface of the pipe, when the male, upon being
turned as it traverses the female, will cause the segments to expand and
secure the tube, when upon turning back the male the female is contracted
by the springs or rings until the nut can be withdrawn from the tube, when
the process is repeated on the next tube.
As a means of applying concentrated power the tool may be used for the
purpose of working the punch of a punching machine; also for moving the
die or stamp of any machine for stamping medals or coins, or for impressing
or compressing anything.
In punching and other like machines the female or nut may be in two
segments or more, placed on opposite sides of the mandril, one being loose
and the other attached to the bench or die. The action is the same as that
before described for expanding the tubes.
As a means of adjustment the tool may be applied for tightening the
packing rings and wedges of pistons; also for tightening up the brasses or
bearing surfaces of shafts or rods, or any other working parts of machines
which require adjustment; also for adjusting the knives or cutters of boring
mills or other machines where adjustment is necessary.
In all these cases the shape and action of the tool is the same as in the
punching machine above described; it may also be used as an adjusting media
for mathematical and other similar instruments.
In witness whereof, I, the said Richard Taylor Nelson Howey, have
hereunto set my hand and seal, this 23rd day of March, in the year
of our Lord One thousand eight hundred and sixty-six.
RICHARD TAYLOR NELSON HOWEY (L.s.) Engineer,
46, Blenheim Street,
Newcastle-on-Tyne.