Improved Means and Apparatus for the Conversion or Interchange- ability of Ladies' and Gentlemen's Bicycles.
Year: 1899

page_text: Date of Application, 29th Nov., 1899
Complete Specification Left, 29th Aug., 1900-Accepted, 24th Nov., 1900
PROVISIONAL SPECIFICATION.
Improved Means and Apparatus for the Conversion or Interchange-
ability of Ladies' and Gentlemen's Bicycles.
We, PHILIP ABRAHAM, of 18, Elmfield Mansion, Balham, County of Surrey,
and FREDERICK MORITZ BERAL BERTRAM, of 109, Warwick Road, Maida Vale,
County of London, Engineers, do hereby declare the nature of this invention
to be as follows:-
This invention has for object, certain appliances to enable a lady's bicycle to
be utilised by a gentleman and re-converted for a lady with facility.
For the purpose of our invention, say, for an existing bicycle (lady's), we secure
on or to the seat pillar and to the front post or stalk respectively an embracing
clamp, each having a cone or equivalent shape of plug projecting upwardly from
the inner ends or inner portions, and looking towards each other, over which cone
shape of plugs is a fore and aft bar with the ends prepared with conical holes to
fit closely over the plugs, the cone surfaces so fitting each other that all rattle
and risk of disconnection are obviated.
With new bicycles, the plug ends may be as projections or brackets from any
part of the seat pillar or centre stay, and of the front frame tube.
The detachable fore and aft bar, or upper main tube may have eyes to engage
other eyes of the frame and be secured by eyebolts or other like appliances, or
the plugs may have holes in them for keys or the upper main tube to be affixed.
The invention will enable a lady's bicycle to be temporarily used as a gentle-
man's, or a gentleman's bicycle could be used by a lady by simply detaching the
bar.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Philip Abraham, and
Frederick Moritz Beral Bertram.
Improved Means and Apparatus for the Conversion or Interchange-
ability of Ladies' and Gentlemen's Bicycles.
We, PHILIP ABRAHAM, of 18, Elmfield Mansion, Balham, County of Surrey,
and FREDERICK MORITZ BERAL BERTRAM, of 109, Warwick Road, Maida Vale,
County of London, Engineers, 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:-
This invention has for object certain appliances to enable a lady's bicycle to
be utilised by a gentleman and re-converted for a lady with facility.

page_text: For the purpose of our invention, and such as we show in the annexed draw-
ings, say, for an existing bicycle (lady's), we secure on or to the seat pillar A
Figure 2, and to the front post or stalk B respectively an embracing clamp C
Figure 1, each having a cone or equivalent shape of plug D projecting upwardly
from the inner ends or inner portions, and looking towards each other, over
which cone shape of plugs is a fore and aft bar E, with the ends prepared with
conical holes to fit closely over the plugs D, the cone surfaces so fitting each
other that all rattle and risk of disconnection are obviated.
With new bicycles, the plugs D may be as projections or brackets from any
part of the seat pillar F or centre stay, and of the front frame tube B.
The detachable fore and aft bar, or upper main tube may have eyes to engage
other eyes of the frame F, or clamp C as at Figure 3, and be secured by eye-
bolts G, or other like appliances.
According to Figures 4, 5, and 6, the connection between the seat pillar and
the steering post is made by forming the plugs D of the clamp C with a screw
thread, the plugs being hollow for encircling the ends of the bar E and being
held thereto by a screw ring H, this acting against a ring I secured to the tube E
so as to draw the seat pillar slightly towards the steering post and ensure perfect
rigidity of the frame.
Figure 4 shows a frame with the top bar applied.
Figure 5 a perspective view of the clamp and plug.
Figure 6 a section of the clamp, plug and ring H.
The invention will enable a lady's bicycle to be temporarily used as a gentle-
man's, or a gentleman's bicycle could be used by a lady by simply detaching the
bar.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is:-
1. The improved means and apparatus for the conversion or interchangeability
of ladies and gentlemen's bicycles consisting of the employment of a loose bar
held to the front steering post and the back stay or seat pillar by clips or clamps,
substantially as described and shown in the annexed drawings.
2. Converting ladies bicycles into gentlemen's bicycles by affixing a clip or
clamp to the steering post and the seat pillar or back stay, and securing a loose
bar thereto either by plugs or screws, substantially as described and illustrated.
Dated this 29th day of August 1900.
R. CORE GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Philip Abraham, and
Frederick Moritz Beral Bertram.
R. CORE GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Philip Abraham, and
Frederick Moritz Beral Bertram.