Tubes for Cycle Frames.
Year: 1895

page_text: Date of Application, 29th Oct., 1895
Complete Specification Left, 29th July, 1895-Accepted, 12th Sept., 1896
Tubes for Cycle Frames.
I, ALBERT FARNELL, of 62 Manningham Lane, Bradford, in the County of York,
Cycle Manufacturer, do hereby declare the nature of this invention to be as follows:--
It consists of a new and improved tube for cycle frames, and is especially
applicable and useful for the back stays or forks of bicycles, which are now being
constructed similar in form or shape to the letter D, and are termed D-shaped tubes.
This section of tube is taken in order to reduce the width of the tread, and the object
of my invention is to construct tubes, for these stays and other parts, stronger than
the tubes now constructed, without increasing the size and weight, so that they may
better withstand the torsional strain put on to them.
My improved tube may be made either round or oval-shaped, as well as D-shaped,
and may be used for other parts of the frame. It is, however, especially applicable
to the back stays of the frame, by reason of the weakness of the plain D-shaped
tube.
My improved tube is constructed with an internal web or longitudinal stay out of
a strip of sheet steel which is of greater width than is required to form the section
of the tube, so that if it were bent to form a tube of the ordinary shape or section, the
sides or edges of the strip would overlap. The strip of metal, however, I bend or
form so that the extra width is turned in, and forms a web which runs lengthwise.
After the strip of steel has been bent or formed to the shape required, the parts in
contact are brazed together.
Dated this 28th day of October 1895
J. SIDNEY CRITCHLEY,
27 Kirkgate, Bradford, Agent for the Applicant.
I ALBERT FARNELI. of 62 Manningham Lane Bradford in the County of York,
Cycle Manufacturer 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 :-
It consists of a new and improved tube for cycle frames, and is especially applicable
and useful for the back stays or forks of bicycles, which are now being constructed
similar in form or shape to the letter D, and are termed D shaped tubes. This
section of tube is taken in order to reduce the width of the tread, and the object of
my invention is to construct tubes for these stays, and other parts, stronger than the
tubes now constructed, without increasing the size and weight, so that they may
withstand the torsional strain put on to them.
My improved tube may be made either round or oval-shaped, as well as D shaped,
and may be used for other parts of the frame. It is, however, especially applicable
to the back stays of the frame, by reason of the weakness of the plain D shaped
tube.

page_text: My improved tube is constructed with an internal web or longitudinal stay out of
a strip of sheet steel which is of greater width than is required to form the
section of the tube, so that if it were bent to form a tube of the ordinary shape or
section the sides or edges of the strip would overlap. The strip of metal, however,
I bend or form so that the extra width is turned in, and forms a web which runs
lengthwise. After the strip of steel has been bent or formed to the shape required,
the parts in contact are brazed together.
In order that my invention may be fully understood 1 will describe the same in
detail by making reference to the accompanying sheet of drawings in which
Fig. 1 represents a cross section through a cylindrical tube constructed according
to my invention.
Fig. 2 is a similar view of an oval shaped tube.
Fig. 3 a cross section of a D shaped tube and
Fig. 4 a modification of my improved tube.
The tube A is formed out of a strip of sheet steel or the like, of suitable width,
and is bent to the desired shape in such a manner as to form a web or strengthening
piece B, running the whole length of the tube. The parts in contact are then
brazed or otherwise secured together in any convenient manner.
Although I have shewn and described four different sections of tubing it will be
easily understood that there are other forms into which I may bend the metal, and
I do not claim any particular shape.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that what I
claim is.
The construction of a tube suitable for bicycle frames and the like, the essential
novelty consisting in forming an internal web or strengthening piece B arranged
substantially in the manner and for the purpose herein before described and shewn.
Dated this 27th day of July 1896.
J. SIDNEY CRITCHLEY,
9 Charles Street, Bradford, Agent for the Applicant.
J. SIDNEY CRITCHLEY,
9 Charles Street, Bradford, Agent for the Applicant.