Improvements in and relating to the Connection of Tubes and the Construction of Frames, and more especially the Frames of Cycles.
Year: 1899

page_text: Date of Application, 12th Jan., 1899
Complete Specification Left, 17th June, 1899-Accepted, 29th July, 1899
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Connection of Tubes and the
Construction of Frames, and more especially the Frames of Cycles.
I, GEORGE CROYDON MARKS, of 18, Southampton Buildings, London, W.C.,
Consulting Engineer, (being a communication from abroad by Henry Adler, of
1.0. Box 352, Johannesburg, in the South African Republic, Tailor), do hereby
declare the nature of this invention to be as follows:---
This invention relates to means for the connection of tubes, and means for the
connection of tubes for the construction of frames such as the frames of cycles,
and has for its object to effect such connection rigidly, simply, and effectively.
The invention consists in means for the connection of tubes that are disposed
in angular relation one to the other, and relates more especially to the connec-
tion of tubes of triangular or other angular section.
In carrying the invention into effect in its application to the construction of a
cycle frame such as that wherein the section of tube employed is angular and pro-
vided with longitudinal beading I provide an angle jointing piece either solid or
formed from sheet metal shaped to correspond to the interior dimensions and
shape of the tubes to be connected. This angular jointing piece has its arms dis-
posed at such an angle as required for the particular part of the frame for which
it is employed. These arms are inserted within the tubular extremities of the
tubes to be connected into a position wherein the edges of the respective extremi-
ties of the tubes abut one against the other so that the joint may be entirely
covered. The jointing piece may be rigidly fixed in position by being tightly
fitted, or by being brazed, and, in addition, pins may be employed to positively
secure the tubes in position, or a surrounding angular sleeve may be employed
which is provided as hereafter described. The angular jointing piece may,
however, be formed hollow and be provided from cast or sheet metal, in which
case it may receive the respective extremities of the tubes to be connected, the
interior dimensions and shape of its arms corresponding to the dimensions and
shape of the exterior of the extremities of the tubes to be connected. In such
case, likewise, the tubes may be either tightly fitted, or brazed, and may be
further secured in position by means of pins or a surrounding sleeve.
In carrying the invention into effect in accordance with another modification
the employment of a jointing piece such as hereinbefore described may be dis-
pensed with, in which case the extremity of one of the tubes to be connected
may lie in a transverse position against the extremity of the other in a suitably
shaped recess at its extremity and it may be secured in this position by means
of flanges provided upon the extremity of each tube which embrace the other or
the one part or side of one tube may be extended so as to be bent round to sur-
round the extremity of the other. In these latter cases pins may be employed to
connect the tubes positively together, but, for the purpose of the proper con-
nection of one to the other, a surrounding sleeve may be employed provided as
bereafter described. This surrounding sleeve is preferably formed from one sheet

page_text: of metal so shaped and bent that one part shall completely envelope the
extremity of one of the tubes and that part shall be securely fastened by its
longitudinal edges engaging one with the other preferably in the manner of a
hook, while the other part shall embrace the extremity of the other tube and be
securely fastened by its longitudinal edges similarly engaging one with the other
so that thereby the elbow formed on the connection of the tubes in this way shall
be completely covered by the surrounding sleeve. This sleeve may be brazed or
further secured by means of pius while a jointing core piece may also be provided,
if required, such as that in the modification of the invention which is first
described.
I do not limit my invention to any particular form of surrounding sleeve pro-
vided from sheet metal as, in some cases, I employ a sleeve cut from a blank of
different shape and bent to a different form; for example, I may employ the
sleeve merely to hold the extremity of the one tube within the recess provided for
it in the extremity of the other, the surrounding sleeve being in such a case not
of an elbow or angular shape. When providing such a sleeve from one blank I
prefer to firmly fasten it in position by providing two sets of engaging longitu-
dinal edges. These may be provided so as to correspond with the beads or
angular edges of the tube or not, the shape of the blank of course varying accord-
ing to the place upon the tube where the edges are connected. According to
an invention which however, is not the subject matter of this application I enforce
the tube provided as herein before described of angular form, or of other form,
with longitudinal beading, and with longitudinal fillets or flanges fitted within
the interior of the tube and brazed or otherwise fitted within the longitudinal
beading, and, according to my present invention, I may utilise the enforcing or
strengthening fillets or flanges to engage one with the other, or I may arrange
that the flanges or fillets or one tube may rest within the beads or recesses of the
other, and a supplementary sleeve may be provided within the interior whereby
the joint may be further enforced or strengthened and the whole brazed or other-
wise secured or fitted together so as to form a strong joint.
Datad his 10th day of Tonow
1900
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.
Improvements in and relating to the Connection of Tubes and the
Construction of Frames, and more especially the Frames of Cycles.
I, GEORGE CROYDON MARKS, of 18, Southampton Buildings, London, W.C.,
Consulting Engineer, (being a communication from abroad by Henry Adler, of
P.O. Box 352, Johannesburg, in the South African Republic, Tailor), do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to means for the connection of tubes, and means for the
connection of tubes for the construction of frames such as the frames of cycles,
and has for its object to effect such connection rigidly, simply, and effectively.
The invention consists in means for the connection of tubes that are disposed
in angular relation one to the other, and relates more especially to the connec-
tion of tubes of triangular or other angular section.
The invention is illustrated in the accompanying diawings, in which,

page_text: Figures 1 and 2 illustrate the formation of a joint according to one modifica-
tion, while,
Figures 3, 4 and 5 illustrate further modifications.
Figures 6 to 13 illustrate different modifications of the invention as applied to
the strengthening of joints, more especially such joints as are shown in
Figures 1 to 5.
in carrying the invention into effect in its application to the construction of a
cycle frame such as that wherein the section of tube employed is angular and
provided with longitudinal beading I provide according to one modification an
angle jointing piece A (Figure 1) either solid or formed from sheet metal shaped
to correspond to the interior dimensions and shape of the tubes to be connected.
This angular jointing piece has its arms ab disposed at such an angle as required
for the particular part of the frame for which it is employed. These armis are
inserted within the tubular extremities of the tubes to be connected, such as cd
(Figure 2), into a position wherein the edges of the respective extremities of
the tubes abut one against the other so that the jointing piece may be entirely
covered. The jointing piece may be rigidly fixed in position by being tightly
fitted, or by being brazed, and, in addition, pins may be employed to positively
secure the tubes in position, or a surrounding angular sleeve may be employed
which is provided as hereafter described. The angular jointing piece may, how-
ever, be formed hollow and be provided from cast or sheet metal, in which case it
may receive the respective extremities of the tubes to be connected, the interior
dimensions and shape of its arms corresponding to the dimensions and shape of
the exterior of the extremities of the tubes to be connected. In such case, like-
wise, the tubes may be either tightly fitted, or brazed, and may be further
secured in position by means of pins or a surrounding sleeve.
In carrying the invention into effect in accordance with another modification,
as illustrated in Figures 3, 4 and 5, the employment of a jointing piece such as
bereinbefore described may be dispensed with, in which case the extremity of
one of the tubes C to be connected may lie in a transverse position against the
extremity of the other D in a suitably shaped recess E at its extremity and it
may be secured in this position by means of flanges FF provided upon the
extremity of each tube which embrace the other tube, or the one part or side of
one tube may be extended, as at G (Figure 5), so as to be bent round to surround
the extremity of the other. In these latter cases pins may be employed to connect
the tubes positively together, but, for the purpose of the proper connection of
one to the other, a surrounding sleeve may be employed provided as hereafter
described. This surrounding sleeve is preferably formed from one sheet of metal,
as shown in Figures 6 and 7, so shaped and bent along the parts indicated in the
figures by dotted lines that one part I shall completely envelope the extremity
of one of the tubes and that part shall be securely fastened by its longitudinal
edges I engaging one with the other preferably in the manner of a hook, while
the other part J shall embrace the extremity of the other tube and be securely
fastened by its longitudinal edges K similarly engaging one with the other so
that thereby the elbow formed on the connection of the tubes in this way shall
be completely covered by the surrounding sleeve. This sleeve may be brazed or
further secured by means of pins while a jointing core piece may also be pro-
vided, if required, such as that in the modifications of the invention which is first
described.
I do not limit my invention to any particular form of surrounding sleeve pro-
vided from sheet metal as, in some cases, I employ a sleeve cut from a blank of
different shape and bent to a different form from that shown in Figures 6 and 7:
for example, I may employ a sleeve as shown in Figures 8 to 1 which is intended
merely to hold the extremity of one tube within the recess provided for it in the
extremity of the other, the surrounding sleeve being in such a case not of an
elbow or angular shape. When providing such a sleeve according to one modi-
fication I cut a blank from sheet metal of a shape such as shown in Figure 8

page_text: The
and then bend it along the parts indicated by dotted lines so that the parts I'
completely surround or embrace the end of one tube while the part J holds the
extremity of the other tube within the recess provided for it in the first.
parts Hare then brazed or otherwise secured along their longitudinal edges I'.
According to another modification as illustrated in Figures 10 and 11 I so design
the blank that the parts H¹ form both their joints or seams 12 along the longi-
tudinal edges of the tube, this design being specially applicable to tubes having
beaded edges as the joints may be arranged to correspond with such beaded edges.
Figures 12 and 13 illustrate a still further modification. In this case the
blank is designed to form only one longitudinal joint or seam 13, the part H¹
surrounding the end of one tube and the part J holding the extremity of the
other as in the modifications just described.
According to an invention which, however, is not the subject matter of this
application I enforce the tube provided as hereinbefore described of angular form,
or of other form, with longitudinal beading, and with longitudinal fillets or
flanges fitted within the interior of the tube and brazed or otherwise fitted within
the longitudinal beading, and, according to my present invention, I may utilise
the enforcing or strengthening fillets or flanges to engage one with the other, or
I may arrange that the flanges or fillets of one tube may rest within the beads
or recesses of the other, and a supplementary sleeve may be provided within the
interior whereby the joint may be further enforced or strengthened and the whole
Erazed or otherwise secured or fitted together so as to form a strong joint.
It is to be understood that the invention is not confined to any particular shape
of strengthening sleeves as such could be altered to suit the shape of the parti-
cular joint it is required to strengthen and also in cases where it would be pre-
ferable the sleeve may be applied internally as a liner in which case its edges
would simply abut and not be lapped so as to facilitate extraction in the event
of a tube being damaged.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. Means for the connection of tubes disposed in angular relation one to the
other and more especially for the connection of tubes of triangular or other
angular section substantially as hereinbefore described and as severally illustrated
in the accompanying drawings.
Dated this 17th day of June 1
MARKS & CLERK,
18,Southampton Buildings, London, W.('.,
13, Temple Street, Birmingham, and 25, Cross Street, Manchester,
Agents.