Improvements in Connecting Tubes together or to Junction Pieces more especially adapted for use in Making Cycle Frames.
Year: 1898

page_text: Date of Application, 4th Apr., 1898
Complete Specification Left, 3rd Jan., 1899-Accepted, 11th Feb.,
1899
PROVISIONAL SPECIFICATION.
Improvements in Connecting Tubes together or to Junction Pieces
more especially adapted for use in Making Cycle Frames.
-
I, SALOMON FRANK, of No. 4, Blücherplatz, Frankfort on the Main, in the Empire
of Germany, Mechanical Engineer, do hereby declare the nature of my invention
to be as follows:-
My invention relates to improved means for connecting tubes together or to
junction pieces and is especially applicable for use in making cycle frames but
it may be used for analogous purposes.
Cycle manufacturers in some cases prefer to solder the tubes of cycle-frames on to
the junction pieces. As the soldering process is apt to prove detrimental to the
rigidity of the tube-ends, the latter are sometimes strengthened by making them
thicker than the remaining portions of the tubes. This object has hitherto been
obtained in the act of drawing the tubes, and has proved somewhat complicated.
According to my invention I strengthen the tube-ends very readily, by inserting
into the ends of the tubes to be strengthened, short lengths of tubing of a
diameter slightly in excess of the internal diameter of the tubes to be joined, the
ends of which have previously been bevelled or reduced as much as necessary to
enable such insertion to be effected.
By such means the ends of the tubes are strengthened as effectively as by the
drawing process hitherto employed.
1 1000
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.
Improvements in Connecting Tubes together or to Junction Pieces
more especially adapted for use in Making Cycle Frames.
I, SALOMON FRANK, of No. 4, Blücherplatz, Frankfort on the Main, in the Empire
of Germany, 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 relates to improved means for connecting tubes together or to
junction pieces and is especially applicable for use in making cycle-frames but
it may be used for analogous purposes.
Cycle manufacturers in some cases prefer to solder the tubes of cycle-frames to
033

page_text: the junction pieces. As the soldering process is apt to prove detrimental to the
rigidity of the tube-ends, the latter are sometimes strengthened by making them
thicker than the remaining portions of the tubes. This object has hitherto been
obtained in the act of drawing the tubes, and has proved somewhat complicated
or difficult.
According to my invention I strengthen the tube-ends by inserting into the ends
thereof short lengths of tubing of a diameter slightly in excess of the internal
diameter of the tubes into which they are inserted, the ends of which have pre-
viously been bevelled or reduced as much as necessary to enable such insertion to
be effected.
By this means the ends of the tubes are strengthened as effectively as if they were
thickened in the drawing process hitherto employed.
The insertion of the tubes may be effected as described in the Specification of
Letters Patent No. 6317 of 1897 granted to me.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what
I claim is:
The strengthening of the tubes of cycle-frames or the like at the ends which are
to be soldered to the junction pieces or in the like tubular parts, by inserting
short tubular pieces into the ends of the said tubes as hereinbefore described.
Dated this 3rd day of January 1899.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.