Improvements for Making Cycle and other Frame Joints without Brazing.
Year: 1897

page_text: Date of Application, 4th Dec., 1897
Complete Specification Left, 17th Aug., 1898-Accepted, 12th Nov., 1898
PROVISIONAL SPECIFICATION.
Improvements for Making Cycle and other Frame Joints without
Brazing.
We, William RaDFORD, of Stoke Green, Coventry, Cycle Works Manager, and
WILLIAM SMITH, of 17, The Butts, Coventry, in the County of Warwickshire,
Mechanical Engineer and Draughtsman, do hereby declare the nature of this inven-
tion to be as follows:-
This invention consists in constructing and arranging and working in the manner
herein after described. The tube expanders for making joints or connections in
cycle or other tubular frames, or tubes without brazing. I will describe my inven-
tion for expanding a tube by the means of a kind of toggle joint for internal
expansion. The toggle joint expander has a radius about equal to the internal
radins of the tube to be expanded, the joint end or surface of toggle, is at a distance
from the radius surface or internal radius of the tube, more than the radius of
tube, so that when the two toggle pieces are placed in the tube the toggle point or
surface is out of the centre of the tube, and by pulling or forcing the toggle joint
or surface to-wards the centre of the tube it then causes the tube to expand, as the
outer radius surfaces of toggle pieces are then at a greater distance from one another.
These toggle pieces could be made seperate from one another, or jointed to-gether,
or made solid with one another, or so to say in one piece, in case of them being
solid with one another or in one piece, the web between the two radius surfaces, or
the weakest part of the web would have to be out of centre of the tube, so that when
placed in the tube the weakest point of web would be out of centre of tube and by
as before mentioned pulling or forcing weakest point towards the centre of the tube,
it would then cause the outer radius surfaces of toggle piece to be at a greater
distance from one another, the pulling or forcing of toggle piece or pieces could be
done by means of an ordinary bolt or screw, or other general means, which are well
known, the pulling or forcing of toggle joint towards the centre of tube, could be
accomplished by means of lineable holes through the socket or sleeve and tube, in
the manner before mentioned, the tubes could have several slits or cuts in them at
the ends.
WILLIAM RADFORD,
WILLIAM SMITH.
COMPLETE SPECIFICATION.
Improvements for Making Cycle and other Frame Joints without
Brazing.
We, WILLIAM RADFORD, of Stoke Green; Coventry, Cycle Works Manager, and
William Smith, of 17, The Butts, Coventry, in the County of Warwickshire,
IP 81I

page_text: Mechanical Engineer and Draughtsman, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
For improvements for making cycle and other frames without brazing to be as
follows: Our invention consists in constructing and arranging and working
in the manner herein after described. The tube expanders for making joints or
connections in cyles and other tubular frames without brazing.
We will describe our invention for expanding a tube by the means of a kind of
toggle joint for internal expansion. The toggle joint expander has radius pieces
about equal to the internal radius of the tube to be expanded, the joint end or
surface of toggles is at a distance from the radius surface or internal radius of the
tube more than the radius of tube, so that when the two toggle pieces are placed
in the tube the toggle points or surfaces are out of the centre of the tube, and by
pulling or forcing the toggle joint or surface towards the centre of the tube it then
causes the tube to expand as the outer radius surfaces of toggle pieces are then
at a greater distance from one another. These toggle pieces could be made sepa-
rately from one another or jointed to-gether or made solid with one another, or so
to say in one piece, in case of them being solid with one another, or in one
piece, the web between the two radius surfaces, or the weakest part of the web,
would have to be out of centre of the tube; so that when placed in the tube the
weakest point of web would be out of centre of the tube, and by as before men-
tioned pulling or forcing weakest point towards the centre of the tube it would
then cause the outer radius surfaces of toggle piece to be at a greater distance
from one another. The pulling or forcing of toggle piece or pieces could be done
by means of an ordinary bolt, screw or other general means, which are well known,
the pulling or forcing of toggle joint to-wards the centre of tube could be accom-
plished by means of lineable holes through the socket or sleeve and tube, in the
manner before mentioned. The tubes could have serrated ends, or several slits or
cuts in them at ends or there abouts, or instead of having radius pieces, for toggle
pieces, the toggle pieces could be placed inside a short piece of tube such pieces of
tube having slits or cuts in it or serrated end, by this means the cycle tube (or other
tubes) would be held fast or compressed between socket or sleeve on the outside
and the short tube ou the inside, or instead of having radius pieces or short tube,
the toggle pieces D or toggle piece E could be placed direct into a tube end
which was serrated, or had slits or cuts in same, such tube being a tube of the
frame, and by pulling or forcing toggle pieces D or toggle pieces E to-wards the
centre of tube the expansion of tube would occur.
In the accompanying drawing:
au
Figure 1 represents a longitudinal section, Figure 2 represents
transverse section on line G H of the toggle joint with separate toggle pieces,
A are the radius pieces, which about fit the internal radius of tube, D are the
toggle pieces, F are the slits, or cuts in the tube, or at F the tube could be serrated,
L are the toggle points, or surfaces, which are pulled towards the centre of the tube,
M are the axis ends of toggle pieces, which fit into preferable grooves in radius
pieces A A. N is a hole in radius pieces A A to pass the head B of bolt through,
O is a hole in toggle pieces D D to pass shank of bolt F through, P is a hole to pass
shank of bolt F through, B F is the bolt which is passed through holes NO and P
until its head B pulls against toggle pieces D D. C is the nut which bolts the parts
to-gether.
Figure 3 represents a longitudinal section.
Figure 4 represents a transverse section on line J. K of the toggle joint with
toggle in one solid piece, (or that is to say a toggle piece not split in two) with its
weakest part at the centre Q. A are the radius pieces which about fit the internal
radius of tube, is the toggle piece with its weakest point at Q. F are the slits
or cuts in the tube, or at F, the tube could be serrated, Q is the point which is
pulled towards the centre of the tube, M are the axis ends of toggle piece which

page_text: fit into preferable grooves in radius pieces A A. N is the hole in radius pieces A A.
to pass the head B of bolt through, O is a hole in toggle piece E to pass shank of
bolt F through, P is a hole to pass shank of bolt F through, B F is the bolt which
is passed through holes N O and P until its head B pulls against toggle piece I at
weakest point Q. C is the nut which bolts the parts to-gether.
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
claim is :-
1st. The improvement for making cycle and other frame joints without
brazing, constructed substantially as herein described and illustrated by Figures 1,
2, 3 and 4, of the accompanying drawings.
2nd. The toggle parts made in one or more pieces D D and E with their toggle
points and surfaces L, and Q out of centre of tube, to have a movement as des-
cribed by being pulled or forced to-wards the centre of tube, substantially
as herein described and illustrated by Figures 1, 2, 3 and 4, of the accompanying
drawings.
3rd. The toggle parts D D and E as illustrated by Figures 1, 2, 3 and 4, of the
accompanying drawings to be placed within a short tube or bush partly slit, cut or
serrated; such short tube or bush placed within a tube, and such tube to be expanded
in a socket or sleeve, by such means.
4th. The toggle parts D D and E, as illustrated by Figures 1, 2, 3 and 4, of the
accompanying drawings, to be placed within a tube of the frame such
tube to be expanded within a socket or sleeve, by such means, as berein
described.
Dated this 16th day of August. 1898
WILLIAM RADFORD,
WILLIAM SMITH.