A NEW OR IMPROVED TUBE BEADER
Year: 1877

page_text: LETTERS PATENT to David Law Selkirk, of No. 9, London Street, in the
•
City of London, Consulting Marine Engineer and Surveyor, Member of Council
of the Institution of Marine Engineers, for the Invention of "A NEW OR
IMPROVED TUBE BEADER." A communication from abroad by Patrick Fitz-
gibbons and Ralph Edward Stone, of Oswego, in the Dominion of Canada..
PROVISIONAL SPECIFICATION left by the said David Law Selkirk at the
Office of the Commissioners of Patents on the 19th June 1877.
DAVID LAW SELKIRK, of No. 9, London Street, in the City of London, Consulting.
Marine Engineer and Surveyor, Member of Council of the Institution of Marino
Engineers. "A NEW OR IMPROVED TUBE BEADER." A communication from abroad'
by Patrick Fitzgibbons and Ralph Edward Stone, of Oswego, in the Dominion
of Canada.
The object of my Invention is to effect a saving in time and manual labour in
beading tubes. By its action it forms a perfect and beautifully finished bead. It
is capable of executing six times at least the amount of hand labour in the samo
time; it is designed to work in a very small space. By the workman it can be
used with the greatest ease, and with but little exertion.
My Invention consists as follows:-The part of the tool which has to be inserted.
in the tube is of circular form externally, and conical internally, with four recesses'
cut in it to receive four pieces grooved externally to grip the inside of tube,
tightened or slackened as may be necessary by the conical centre piece, which,
passes more than full length through the tool, with a hexagon nut on the end
to tighten or slacken. Over this centre piece is fitted a ratchet, which has,
in front three turned rollers rotating in bearings; these rollers are hollowed out to
form the bead' on the tube end. After the four grooved pieces have been tightened
Dis 17

page_text: in the tube by screwing on the cone the rollers are then pressed against the tube
ends by a feed screw, and the ratchet worked in the ordinary way, and in this
manner the bead will be formed upon the tube end.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said David Law Selkirk in the Great Seal Patent Office on the 16th
October 1877.
DAVID LAW SELKIRK, of No. 9, London Street, in the City of London, Consulting
Marine Engineer and Surveyor, Member of Council of the Institution of Marine
Engineers. "A NEW OR IMPROVED TUBE BEADER." A communication from abroad
by Patrick Fitzgibbons and Ralph Edward Stone, of Oswego, in the Dominion
of Canada.
The object of this Invention is to effect a saving of time and manual labour in
beading tubes. By its action it forms a perfect and beautifully finished bead. It
is capable of exerting six times at least the amount of hand labour in the same
time; it is designed to work in a very small space. By the workman it can be
used with the greatest ease, and with but little exertion.
-
My Invention consists as follows:-The part of the tool which has to be inserted
in the tube is of circular form externally, and conical internally, with four recesses
cut in it to receive four pieces grooved internally to grip the inside of tube, and
these may be tightened or slackened, as may. be found necessary, by the conical
centro piece, which passes more than full length through the tool, with a hexagon
nut on the end to tighten or slacken. Over this centro piece is fitted a ratchet,
which has in front three turned rollers hollowed out to form the bead on the tube
end. After the four pieces have been tightened in the tube by screwing on the
cone the rollers are then pressed against the tube ends by a feed screw and the
ratchet worked in the ordinary way, and in this manner the bead will be formed on
the tube end.
In the Drawings accompanying this Specification Figure 2 shows the instrument
in section.
The fixing piece A is first secured firmly in the boiler tube B by the action of the
nut c, which draws the cone mandril d upwards, thrusting the wedge pieces E, three
in number, E, Figure 3, outward against the tube-B.. The body piece, F is then
brought into position, so that the beading rollers g, three in number, as shown (one
dotted) in Figure 1, bear upon the edge of the tube at 6¹. A considerable pressure
is then brought to bear upon the beading rollers by the action of the nut h, friction
rollers i being placed between the nut and the body peece F, in order to avoid all,
unnecessary labour. The body piece is then made to revolve upon the fixing
piece A by means of a ratchet wheel k and pawl 7 (see k¹ and U, Figures 2 and 4).
The body piece carries with it the beading rollers g, and a beautiful and very
perfect bead is quickly produced upon the tube end, as shewn at b', Figure 2.
I can convert this instrument into a tube expander, and also into a tube cutter,
the method of expanding to be by expanding pieces or rollers replacing the other
rollers g.
The method of cutting tubes to be by placing fixed tools in the place of the
rollers marked g, both to be worked by ratchet and pawl on the cone principle or
otherwise.
Having now particularly described and ascertained the nature of the said Inven-
tion, and in what manner the same is to be effected, I claim as my Invention,-
The general arrangement of the parts of the tool A, c, d, E, F, h, i, separately,
from the rollers a

page_text: And I claim also the combination of the rollers g, with the other parts herein-
before named, and their general arrangement together.
In witness whereof, I, the said David Law Selkirk, have hereunto set my
hand and seal, this Twenty-fifth day of August, in the year of our Lord One
thousand eight hundred and seventy-seven.
DAVID L. SELKIRK. (L.S.)