Improvements in Bicycles or other Velocipedes.
Year: 1892

page_text: Date of Application, 11th May, 1892
Complete Specification Left, 9th Feb., 1893-Accepted, 17th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Bicycles or other Velocipedes.
I THOMAS LEIGH MITCHELMORE, of 31 Derby Road, Nichols Town,
Southampton, in the County of Hants. Engineer, do hereby declare the nature
of this invention to be as follows:-
-:
My invention relates to improvements in bicycles or other velocipedes.
The main object of my said invention, is to provide simple, cheap, 'and efficient
stampings of steel plate, or other suitable material for the lugs or connections
of the different parts of the machine, for which they are required. I will describe
this my invention as applied to a diamond frame safety bicycle.
According to one form of my invention, I provide a stamping of steel, or iron
plate, approximately 1, I, shaped being turned round at the middle, and brazed,
or otherwise connected to the steering pillar, the ends, which are preferably wider,
are lapped round the top member of frame of bicycle, and suitably connected to
same, thereby forming a connection from the steering pillar, to the top member
of frame.
A lug of similar shape may also be used as a connection for the lower member,
to the steering pillar, the ends being more or less angled as desired.
In another form of my invention, I arrange for the connection of the top
member of frame, to the seat pillar, or diagonal member-and to the back
members, to be made in two pieces of approximately Tshape, having a dovetail
joint formed on each end of the crosspiece, or I may provide for the stamping to
be in one piece, only one dovetail then being required. The ends of each
crosspiece, are lapped over the top member, in a suitable manner, and temporarily
secured to same by the before mentioned dovetail joints, and further, the, 'lower
end of each T piece is also lapped round the diagonal member of frame, and
extended to a suitable distance beyond the top of same, the extreme ends, being
angled, so as to form a clip for the seat pillar, and also a connection to the back
members of frame, by a bolt passing through the before mentioned ends of lug, for
the purpose.
Further I provide for the stamping, to which the back wheel of machine is
attached, to be approximately Y shaped, the upper ends of which are lapped over,
and brazed to the back members of the frame, one on each side of lug, or they,
(the ends) may be arranged to lap only on one side as preferred.
I also provide a slot in the lower end of this stamping, to secure the spindle of
the back wheel. The stampings for the lugs, as hereinbefore described may be
made of steel, or other suitable material, of any desired thickness, and further to
add to the strength, and rigidity of the machine to which they are attached, I may
form corrugations in the stampings.
Dated this 10th day of May 1892.
THOMAS LEIGH MITCHELMORE,
Applicant:
COMPLETE SPECIFICATION.
Improvements in Bicycles or other Velocipedes.
I THOMAS LEIGH MITCHELMORE, of 31 Derby Road, Nichols TowĘ,
Southampton, in the County of Hampshire, Engineer. do hereby declare the nature
45 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 bicycles or other velocipedes.

page_text: The main object of my invention is to provide simple cheap and efficient
stampings of steel plate or other suitable material for the lugs or connections of
the different parts of the framework for which they are required.
I will describe this my invention as applied to a diamond frame safety bicycle.
In the accompanying drawing Fig. 1 is an elevation shewing one form of lug
adapted for the connection of the steering pillar to the top member of machine.
Fig. 2 a plan of Fig. 1.
Fig. 3 is a view shewing the shape of the lug in the blank before being
pressed to shape as shewn in Figs. 1 & 2.
Figs. 4 and 5, shew in elevating and section a modification of Fig. 1 & 2.
Figs. 6 and 7 shew in elevation and plan respectively another lug adapted for
the connection of the seat pillar to the top and back members of machine.
Fig. 8, is a view showing half the lug in the blank before being pressed to shape
as shewn in Figs. 6 and 7.
Figs. 9 and 10 is an elevation and plan respectively shewing the lug I adopt
'for the connection of the back and lower members of machine to which the driving
wheel is attached.
Fig. 11, a view shewing same in the blank before being pressed to shape as shewn
in Fig. 9. In Fig. 1, a is the steering pillar, the top member of framework;
the stamping as shewn in the blank at Fig. 3, is first pressed round at c, to the size
of the steering pillar, leaving ends the ends c¹, extended for a suitable distance
beyond same these ends which are rather wider and equal in width to half the
circumference of the member b, will be lapped round the latter meeting at the top
and underside of same as shewn at d, see Fig. 2, and can be securely connected by
brazing or other suitable means, the steering pillar a, which passes through the
lug as shewn at Figs. 1 and 2 will also be suitably connected to same.
In Fig. 4 and 5, I have shewn a modification of Figs. 1 and 2, the blank being
of similar shape and pressed round the steering pillar as before described and the
ends c', extended to a suitable distance beyond same, but instead of lapping the
ends c', round the member b, I may leave same flat as shewn in Fig. 5. I also
provide slots or saw cuts in the end of member b, into which the flat ends are
inserted as shewn in Figs. 4 and 5.
I have shewn in Fig. 6 and 7, the lug I adopt for the connection of the seat
pillar to the member band members e, of machine. I provide two blanks of
similar shape to Fig. 8, the ends f, are lapped round the member band each
blank is then pressed half way round at 1, to the size of the seat pillar g, and
extended to a suitable distance beyond same the extreme end h, being angled so as
to form a clip for the connection of the seat pillar and also for the back members e,
by a bolt passing through the lug at i, see Fig. 7. I also provide dovetails j, for
temporarily securing the two blanks together previous to brazing to the member b.
Figs. 9 and 10, represents the lug for the connection of the driving wheel to the
framework, the shape of same in the blank is shewn at Fig. 11, having ends k,
which are in width equal to the circumference of the members to which they are
to be connected these ends are lapped round the members-one on each side of
lug as shewn in Fig. 10-and brazed or suitably connected to same.
I provide a slot k¹, see Fig. 9, in which the driving wheel is attached in the
ordinary manner.
The lugs as herein before described may have corrugations formed in same to
further strengthen them.
It is noted that I do not confine myself to the particular shape of the lugs as
hereinbefore described the same may vary in shape to suit various machines to which
they are connected without departing from the essential features of my invention.
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 :-
1st. The method of constructing the framework of bicycles or other velocipedes

page_text: by the use of connecting joints, stamped, pressed or rolled from sheet steel or other
suitable material in such forms and shapes in manner as herein before described and
set forth.
T. L. MITCHELMORE,
Applicant.