Improvements in the Tubes or Hollow Members of Cycle and other Frames.
Year: 1897

page_text: Date of Application, 2nd June, 1897
Complete Specification Left, 2nd Mar., 1898-Accepted, 23rd Apr., 1898
PROVISIONAL SPECIFICATION.
Improvements in the Tubes or Hollow Members of Cycle and other
Frames.
We, JOHN SHAW and JAMES SHAW, of Round Tower Works, Coventry, in the
County of Warwick, Cycle Hollow Parts Manufacturers, and SHAW BROTHERS, OF
COVENTRY LIMITED, Round Tower Works, Coventry aforesaid, Cycle Hollow Parts
Manufacturers, do hereby declare the nature of our said invention to be as
follows:-
Our invention has for its object improvements in the tubes or hollow members
of cycle and other frames by which we mateirially strengthen the parts without
adding to the weight.
In carrying our invention into practice we form one two or more flutes along
the length to within a short distance of each end of the various tubes or hollow
members of a cycle by drawing or rolling or with a fullering tool a mandril pre-
ferably being placed inside during the operation. When fluting the hollow mem-
bers of a cycle which are formed half round the flutes may extend from end to end
and in some cases we may use two of these half round fluted members for forming
the frames of cycles by connecting them together with the usual junction pieces.
In all cases the hollow members may be brazed or weldless tubes.
Dated this 1st day of June 1897.
GEO.
BARKER,
Agent for Applicant, 77, Colmore Row, Birmingham.
Improvements in the Tubes or Hollow Members of Cycle and other
Frames.
We, JOHN SHAW and JAMES SHAW, of Round Tower Works, Coventry, in the
County of Warwick, Cycle Hollow Parts Manufacturers, and SHAW BROTHERS, OF
COVENTRY LIMITED, Round Tower Works, Coventry aforesaid, Cycle Hollow Parts
Manufacturers, do hereby declare the nature of my said invention and in what
[Price 8d.]

page_text: manner the same is to be performed to be particularly described and ascertained in
and by the following statement:-
Our invention has for its object improvements in the tubes or hollow members
of cycle and other frames by which we materially strengthen the parts without
adding to the weight.
In carrying our invention into practice we form one two or more flutes along
the length to within a short distance of each end of the various tubes or hollow
members of a cycle by drawing or rolling or with a fullering tool a mandril pre-
ferably being placed inside during the operation. When fluting the hollow mem-
bers of a cycle which are formed half round the flutes may extend from end to end
and in some cases we may use two of these half round fluted members for forming
the frames of cycles, by connecting them together with the usual junction pieces.
In all cases the hollow members may be brazed or weldless tubes.
In order that 'our invention may be clearly understood and more easily carried
into practical effect we have appended hereunto a double sized sheet of drawings
upon which we have illustrated several examples of our improvements.
Figure 1 is a broken view of a half round member or back fork of a cycle made
according to our invention.
Figure 2 is a cross sectional view of Figure 1.
די
Figure 3 is a view of the front fork of a cycle made according to our invention.
Figure 4 is a cross sectional view of Figure 3.
Figure 5 is a view shewing a portion of one of the round members of a cycle.
Figure 6 is a cross sectional view of Figure 5.
.
Figures 7 and 8. are cross sectional view showing modification of the members
as shewn at Figures 1 and 3.
In carrying our invention into practice we form the flute t' along the round side
of the D-shaped portion of the tube T extending from the D-shaped end to where
the tube is formed round.as shewn at Figure 1: The portion of this member is
formed round so as to fit into the lugs of the bottom bracket of a cycle. In the
method as shewn at Figure 3 we form the flute on the front fork of a cycle; to
within a short distance of either end leaving the end 3 plain so as to better fit into
the crown of the cycle and the end is flattened and pierced for the spindle of the
front wheel to pass through. At Figure 5 we have shewn one, of the round members
of a cycle frame formed with six flutes which only extend to within a certain dis-
tance of either end leaving the two ends plain so as to accurately fit into their
junctions. The section as shewn at Figure 7 is similar to that shewn at Figure 2
but with a flute formed on the flat as well as, the round portion and that, shewn at
Figure 8 is a similar section to that shewn at Figure 4 with two flutes instead
These flutes may be formed in the various members by drawing or rolling
or with a fullering tool a mandril preferably being placed inside the tube during
the operation and they may be round as shewn or other shape or form. In some
cases we may use two of our half round fluted tubes or members for forming the
round members of a cycle frame by connecting them together with the usual round
junction pieces or lugs. In all cases the fluted members whether used for cycles
or other frames may be either weldless or brazed tubes.
of one.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed we declare that what
we claim is:-
:―
CLAIMS.
First: The improvements in the tubes or hollow members of cycle or other
frames consisting essentially in forming one two three four or more flutes such as t¹
in the tube which extend sufficiently to strengthen the parts required in the manner
and for the purpose substantially as herein set forth and as shewn in the examples
upon the accompanying sheet of drawings.
'

page_text: side the sockets or lugs of cycle and other frames to stiffen them against collapse
and buckling as herein set forth.
Date this 1ot dan
1000
JOHN SHAW,
JAMES SHAW,
SHAW BROS., OF COVENTRY LTD.
By George Barker,
Agent for Applicants, 77, Colmore Row, Birmingham.