Improvements in Handles for Controlling or Guiding Velocipedes, Motor-cars, or other such Machines subject to Jars or Shocks.
Year: 1896

page_text: Date of Application, 30th Nov., 1896
Complete Specification Left, 30th Aug., 1897-Accepted, 6th Nov., 1897
Improvements in Handles for Controlling or Guiding Velocipedes,
Motor-cars, or other such Machines subject to Jars or Shocks.
DAVID JOY 85 Gracechurch Street, London, in the Administrative County of
London,, Mechanical Engineer, do hereby declare the nature of this invention to
be as follows:-
My Improvements consist in constructing the Handles for controlling or
guiding such Machines as Velocipedes, Motor Cars, Light Locomotives, or other
Machines subject to jar in such manner that they shall not transmit the jar from
the machinery or from the roughness of the road to the hands manipulating
such handles, and to effect this I make the handle or handles hollow, and formed
of Indian rubber or such elastic or partially elastic material stretched on a frame
or central bar, the internal space being filled with air or other like fluid at such
pressure as to render the structure sufficiently rigid to answer the purpose of a
Handle, but sufficiently elastic to prevent the transmission of shock or jar from
the machine.
anamban 1906
Improvements in Handles for Controlling or Guiding Velocipedes,
Motor-cars, or other such Machines subject to Jars or Shocks.
DAVID JOY 85 Gracechurch Street, London, in the Administrative County of
London, Mechanical Engineer, 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: -
My Improvements consist in constructing the Handles for controlling or
guiding such Machines as Velocipedes, Motor Cars, Light Locomotives, or other
Machines subject to jar in such manner that they shall not transmit the jar from
the machinery or from the roughness of the road to the hands manipulating
such handles, and to effect this I make the Handle or Handles hollow, and formed
of Indian rubber or such elastic or partially elastic material stretched on a frame
or central bar, the internal space being filled with air or other like fluid at such
pressure as to render the structure sufficiently rigid to answer the purpose of a
Handle, but sufficiently elastic to prevent the transmission of shock or jar from
the machine.
And in order that my Invention may be well understood, I will describe with

page_text: reference to the accompanying drawings the means in which it may be most
easily and satisfactorily performed.
In each of the figures the same letters refer to similar parts.
Figs. 1 and 2 show on a small scale an ordinary Bicycle Handle bar B, fitted
with pneumatic handles 33 13 on my plan. The same handles being shown
full size in three forms at Figs. 3, 4 & 5 on the same sheet No. 1. Here the
Handle bar which is closed at both ends & Fig. 3, to form a reservoir for com-
pressed air or other fluid, is furnishol with a conveniently placed non-return
valve C, Figs. 1 and 2 (such as is used for pneumatic tyres) and serves as the
frame on which the elastic shell d of indian rubber, or such elastic or partially
elastic material is stretched to form the Handles, the compressed air from the
handle-bar being passed into the intervening space through the small hole h
Fig. 3 this india rubber sheil is made air tight upon the handle bar by binding
at each end as at ff, and is then finished by a neat cap at g, g, of metal or other
convenient material.
The Handle so far however would be liable to too local yielding to allow of
efficient control for guiding a machine, I therefore surround this elastic
envelope with an outer and rigid one, k, of papier-mache, or like material, which
will so ride on the inner one, when inflated giving way as a whole, so absorbing
all jar, but distributing the hand pressure over the whole inner inflated tube, so,
securing instant, and efficient power for guiding, and the elastic action will be
increased by giving a slight over-hang to this outer case.
Another form of constructing the Handle to enable the guiding to be effected
very much from the outer end, is shown at Fig. 4, Sheet 1, where while the
inner end of the indian rubber case may be fastened in the usual way, (the same
letters in both figures applying), the outer end is formed closed, with only a
small hole through it, which serves to pass the non-return valve C, through into
the closed end of the handle bar, and to hold all firmly together.
A further modification of the elastic cushion is shown at Fig. 5, where it
consists of a small indian rubber tube d wrapped spirally around the ends of
the handle-bar, in place of the handles already described, this being filled with
air pressure from the handle bar reservoir as before, and in both the latter cases
the rigid outer case will be required.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is
-
First. A pneumatic handle for bicycles and the like machines, consisting of
a tube or sack of elastic material fitted over each end of the ordinary bicycle
handle-bar, which so forms the frame or support, and from which the handles
receive air pressure, the bar at the same time serving as a reservoir, and being
furnished with a non-return valve to fill it by.
Second. In place of a tube or sack, a spiral coil of elastic tubular material may
be wound round the handle-bar and connected with the air pressure therein.
Third. An outer shell or tube of rigid material which shall ride on the inner
elastic cushion, distributing the pressure between the guiding hand, and the
otherwise too elastic cushion, so absorbing the jar without interfering with the
concentration of power to guide.