Improvements in or relating to the Connecting of Metallic Tubes to Lugs or Sockets, and Metallic Tubes to each other, chiefly applicable for forming the Frames of Cycles.
Year: 1897

page_text: This Print is in accordance with the Original Specification as it stands
Amendment (under Section 11 of the Patents, &c. Act, 1883) as required by
Lision of the Comptroller General of the 20th day of April 1898.
Date of Application, 23rd Jan.,
1897
Complete Specification Left, 21st Oct., 1897-Accepted, 8th Jan., 1898
PROVISIONAL
Improvements in or relating to the Connecting of Metallic Tubes
to Lugs or Sockets, and Metallic Tubes to each other, chiefly
applicable for forming the Frames of Cycles.
I, GEORGE PILKINGTON, of Earlsdon, Coventry, Mechanical Engineer, do hereby
declare the nature of my said invention to be as follows:-
My Invention for Improvements in the connecting of metallic tubes to lugs or
sockets for forming the frames of cycles, and the connecting of metallic tubes to
each other for analogous purposes, is to remedy by a simple and efficacious manner
the process hitherto employed and known as Brazing this latter being not only
costly but materially weakens the structure of the frame.
By the following description my invention will be understood.
In the constructing of a frame for a cycle I employ the sockets as hitherto but
stronger (or thickened) than the other part,
each side is formed as a stud and
and is provided with a hole in each, one hole being larger than the other, but
directly opposite to each other. The tube to be connected to these sockets, are
first cut off the required length, and the external diameter of each tube corresponds
A short length of tube open or split of an
to the internal diameter of the socket.
5 increased gauge is placed in the interior of the same, both the tube which is to be
connected to the socket, and the short or inner split tube are provided with holes
corresponding in position to the holes in the socket but the one hole which is
divided by the split is smaller.
The split tube being now in the tube, which is also in the socket, and the holes
20 opposite to each other, I employ a tapered peg of a length sufficient to pass through
the socket and tubes therein and extend a required distance outwards, the smaller
end of this peg is screwed and when passed through the larger holes in the socket
and the tubes it finds a bearing against the edge of the smaller hole in the split
tube. Upon the screwed end of the peg I feed a screwed nut this effects the drawing
25 in of the tapered peg and forcing open or expanding the split tube which
compresses the tube to the socket and all parts are inseparable.
To maintain its position and prevent bulging of the tubes I arrange upon the
tapered peg a length of tube sufficient to pass into the tube and socket preparatory
to putting them together.
1007

page_text: Improvements in or relating to the Connecting of Metallic Tubes
to Lugs or Sockets, and Metallic Tubes to each other, chiefly
applicable for forming the Frames of Cycles.
I, GEORGE PILKINGTON, of Earlsdon, Coventry, in the County of Warwick,
Mechanical Engineer, 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:―
My Invention has for its object to provide simple and efficacious means for
connecting metallic tubes to lugs, or sockets, and metallic tubes to each other in
forming the frames of cycles, or the like, without necessity for brazing which is not
only costly, but materially weakens the structure of the frame, or the like.
I will describe my invention with reference to the accompanying drawing as
applied to the connection of a tube to a lug, or socket, from which its analogous
applications will also be understood.
Figures 1 and 2 are sections at right angles to each other. Figures 14 and 1"
are transverse sections on the line 1-1 Fig. 1. Figure 3 is a side elevation, and
Figure 4 is a plan.
I may employ the ordinary sockets A, but, at each side of the part into which
the tube is introduced, I form a stud, or thickening, a, so as to make it stronger at
these parts, and in each thickening I form a hole the one hole being directly
opposite the other and one hole being larger than the other. The tube B, to be
connected to the socket, is cut off the required length, the external diameter of
the tube corresponding to the internal diameter of the socket. A short length of
open, or split, tube C, is placed in the interior of the tube B the said split tube
fitting easily within the tube B as shewn in Fig. 14, both the said tube B, and
the inner split tube C, being provided with holes corresponding in position to the
holes in the socket A, but the hole in the tube C, which is divided by the split,
is smaller than the corresponding ones in the tube B, and socket A. I pass a tapered
peg, or pin, D, (of length sufficient to pass through the socket and tubes therein,
and extend the necessary distance outwards) through the holes in the parts A B
The smaller end of this peg, or pin, is screwed, and when the said peg, or
pin, is passed through the holes in the socket and the tubes, it bears against the
edge of the smaller hole in the split tube C. Upon the screwed end of the peg
or pin DI place a screwed nut d, and screw it up so as to draw in the tapered peg,
or pin, D, and force open, or expand, the split tube C against the inner surface of
the tube B as shewn in Fig. 1º, which compresses the tube B, against the interior
of the socket A, and so all the parts are firmly and inseparably secured together.
and C.
I can prevent bulging of the parts by mounting upon the tapered peg, or pin, D,
a tube of a length sufficient to pass across from side to side of the tube C,
preparatory to screwing up the nut d.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I wish it to be understood
that I am aware of the Specification of Letters Patent granted to Henry Belcher,
Frederick Easom and Frederick Westwood No. 24564 of 1896, and that I do
not claim anything described or claimed therein, but I declare that what I
claim is:-
1. The connection of tubes to lugs, or sockets, or to other tubes, by inserting the
parts to be joined one within the other, and forcing the inner part outwards

page_text: against the outer part by means of a wedging pin, or peg, passed through holes in
the parts, the inner part being entire and a tube placed within such entire part
being split and the hole at the split being smaller than the adjacent holes in the
other parts so that when the wedging pin, or peg, is operated the inner part, is
expanded by the forcing out of the part within it; substantially as hereinbefore
described.
2. The connection of tubes to lugs, or sockets, or to other tubes, by the means
herein before described and illustrated in the accompanying drawings.
01st day of October 1897.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.