An Improved Ferrule for Use in the Manufacture of Bicycles and other Tubular Structures.
Year: 1893

page_text: Date of Application, 5th July, 1893
Complete Specification Left, 5th Apr., 1894-Accepted, 5th May, 1894
PROVISIONAL SPECIFICATION.
An Improved Ferrule for Use in the Manufacture of Bicycles and
other Tubular Structures.
I, CHARLES BINKS, of 90 Micklegate, in the City and County of York,
Bicycle Manufacturer, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to prevent the breakage of bicycle frames and
other tubular structures at the junction of the tubes and the solid portions of
the structure when the parts are united by brazing.
Now according to this invention I take a piece of metal tube and form deep
serrations at one end thereof. This piece of tube or ferrule is brazed inside
the main tubes and hollow stays of bicycles and the like tubular structures at the
joints.
Ferrules made according to this invention are particularly applicable to bicycles
and the like vehicles which are constructed of tubes inserted into solid forgings
it having been found that in case of a sudden jar or shock the tubes are liable
to fracture at the "neck" but when the said tubes are fitted with ferrules con-
structed as herein before described the serrated portions of the ferrules yield by
bending and fracture of the tubes is avoided.
The ferrules should be made to fit the tubes accurately or they may be split
and compressed before being inserted into the tubes the elasticity of the metal
holding them firmly in place."
Dated this 3rd day of July 1902
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Ferrule for Use in the Manufacture of Bicycles and
other Tubular Structures.
I, CHARLES BINKS of 90, Micklegate in the City and County of York,
Bicycle 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 :-
The object of this invention is to prevent the breakage of bicycle frames and
other tubular structures at the junction of the lighter with the heavier tubes,
sockets or lugs.
Now according to this invention I take a piece of metal tube and form deep
serrations at one end thereof. This piece of tube or ferrule is brazed inside
the main tubes and hollow stays of bicycles and the like tubular structures at the
joints.
The invention is best described by aid of the accompanying drawings in
which ;-
Figure 1 shows a junction with the parts cut away, and Figure 2 a ferrule.
In these A A (shown unshaded in Figure 1) are the serrated ferrules; they
extend inward nearly to the base of the junction sockets B; C is the tube of frame.
017

page_text: In part B there are therefore three thicknesses of metal, beyond this two, gradually
tapering off into one thickness only. They are thus greatly strengthened at the
end of part B where fracture usually occurs and there is no place beyond at which
there is a sudden decrease in strength and stiffness.
Ferrules made according to this invention are particularly applicable to bicycles
and the like vehicles which are constructed of tubes inserted into sockets or lugs
which are as a rule heavier than the tubes, it having been found that in case of a
sudden jar or shock the tubes are liable to fracture at the "neck," but when the
said tubes are fitted with ferrules constructed as hereinbefore described, the
serrated portions of the ferrules yield by bending, and fracture of the tubes is
avoided.
The ferrules should be made to fit the tubes accurately, or they may be split and
compressed before being inserted into the tubes, the elasticity of the metal holding
them firmly in place.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The improved ferrule for use in the manufacture of bicycles and other
tubular structures substantially as described.
2. A ferrule having deep serrations brazed or secured in or over a tube at
the socket or joint, and extending into that socket for the purposes described.
Dated this 4th day of April 1894.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Nottingham, and London, Patent Agents.