Improvements in Machines for Filling Tubes with Rubber Solution and the like.
Year: 1897

page_text: Date of Application, 4th Mar., 1897
Complete Specification Left, 24th June, 1897-Accepted, 14th Aug., 1897
Improvements in Machines for Filling Tubes with Rubber Solution
and the like.
We, BARNETT ABRAHAMS, of 20, Spital Square, Bishopsgate, and 124, Bishopsgate
Street Without, in the County of London, Manufacturer, and WILLIAM CHARLES
BRETT, of 45, High Street, Homerton, in the County of London, Engineer, do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in machines for filling tubes with solution
for repairing punctures in tyres and for similar purposes.
In such machines as now generally made the solution is forced into the tube to be
filled through a nozzle from a cylinder by means of a piston actuated by a screw and
this construction of machine has the disadvantage that a considerable quantity of
the solution escapes and also that loss of time is occasioned in refilling the machine
with solution when the cylinder has become exhausted.
Now, it is the object of this invention to obviate these disadvantages and to this
end we provide a reservoir for containing the solution communicating with one end
preferably the rear end of a cylinder the piston of which is so constructed that the
solution is drawn into the cylinder behind it during its forward stroke and can pass
through it to the front of the same during its backward stroke in order that it may be
forced through a nozzle on the front end of the cylinder when the piston moves
forward for its next stroke. The nozzle, on which the tube to be filled is placed, is
provided with a valve or cock designed to be operated by a series of levers or the like
in connection with the piston rod in such a manner that the said valve or cock is closed
immediately the piston starts to move backwards so that as the tube is removed from
the nozzle no solution is forced out by the pressure of the piston behind it thus
avoiding all waste.
The reservoir is provided with a filling opening by means of which it can be easily
refilled when exhausted of solution.
It will be obvious that the reservoir can communicate with the front end of
the cylinder in which case the piston draws in a charge of solution during its
backward stroke.
In some cases we provide the valve or cock with a spring whereby it is main-
tained normally closed and is opened by the movement of the handle for
effecting the forward movement of the piston. By this means it will be obvious
that the valve, or cock is closed immediately pressure is removed froin
the handle.
=

page_text: Improvements in Machines for Filling Tubes with Rubber Solution
and the like.'
We, BARNETT ABRAHAMS, of 20, Spital Square, Bishopsgate, and 124, Bishopsgate
Street Without, in the County of London, Manufacturer, and WILLIAM CHARLES
BRETT, of 45, High Street, Homerton, in the County of London, 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:-
This invention relates to improvements in machines mainly adapted for filling
tubes or other receptacles with solution for repairing punctures in tyres but which
may also be used for filling tubes with paint, soap, printing ink and other
substances.
In such machines as now generally made the solution is forced into the tube to be
filled through a nozzle from a cylinder by means of a piston actuated by a screw
and this construction of machine has the disadvantage that a considerable quantity
of the solution escapes and also that loss of time is occasioned in refilling the
machine with solution when the cylinder has become exhausted.
Now, it is the object of this invention to obviate these disadvantages and to
this end we provide a reservoir for containing the solution communicating with onc
end, preferably the rear end, of a cylinder the piston of which is so constructed that the
solution is drawn into the cylinder behind it during its forward stroke and can
pass through it to the front of the same during its backward stroke in order
that it may be forced through a nozzle on the front end of the cylinder when.
the piston moves forward for its next stroke. The nozzle, on which the tube to
be filled is placed, is provided with a valve or cock designed to be operated by a
series of levers and links or the like in connection with the piston rod in such
a manner that the said valve or cock is closed immediately the pistou starts to move
backwards so that as the tube is removed from the nozzle no solution is forced out by
the pressure of the piston behind it thus avoiding all waste.
In some cases we provide the valve or cock with a spring whereby it is main-
tained normally closed and is opened by the movement of the handle for
effecting a forward movement of the piston. By this means it will be obvious
that the valve or cock is closed immmediately pressure is removed from the
handle.
In the accompanying drawings,--
Figure 1 is a sectional elevation of a machine for filling tubes with rubber solution
(or other substances) constructed according to our invention:
Figure 2 is a sectional plan of the machine; and,
Figure 3 is a section on the line 3-3 Figure 1.
a is the reservoir for containing the solution and bis the cylinder of the pump
for forcing the solution into the tubes or other receptacles to be filled. c is a pipe
or passage by means of which the reservoir a is placed in communication with the
rear end of the pump cylinder b. Communication can be cut off between the
reservoir a and the pump cylinder b from the exterior by means of a cock d fitted to
the pipe c and also by means of a small slide-valve e arranged in the reservoir and
adapted to be operated by a rod f which passes through the wall of a reservoir and
is provided with an external knob g.
h is the piston reciprocated by the
provided with a valvej arranged to open
the piston during its backward stroke.
piston rod i, as hereinafter described, and
so as to allow the solution to pass through
is the nozzle upon which the tube to be

page_text: filled is placed, the said nozzle k being screwed to a connection or neck m upon a
sleeve adapted to slide between shoullers upon the front end of the pump.
cylinder b, the interior of which is place in communication with the nozzle through
a lateral hole b¹ in the said cylinder b when the sleeve is placed in such a position
that the connection m comes opposite the said hole b¹. The sleeve n is also provided
with a hole which, by partially turning or sliding the sleeve upon the end of the
cylinder b, can be brought opposite a hole 62 in the underside of the cylinder so as
to allow the solution to escape in a downward direction through the said holes b²
and n¹.
o is the valve for controlling the escape of the solution from the pump cylinder b,
the said valve o being arranged to slide in the front end of the pump cylinder b and
being operated as hereinafter described.
The arrangement which we provide for reciprocating the piston hand for
controlling the flow and supply of the solution to and from the pump cylinder b, consists
of a handle or lever p pivoted at a point intermediate between its two ends to.
the piston rod i and at the end opposite the handle to one end of a double
link q, the other end of which is pivoted to one end of a doub'e link r; the
other end of this link is pivoted to one end of a double link s the other end of
which is pivoted to a forked link thinged to the front end of the pump cylinder b.:
The link s is pivoted at a point intermediate between its two ends to the rod u of
the valve o, which rod passes through the front end of the pump cylinder b. The
connected ends of the two links q and are pivotally connected by a link v to the
reservoir of the apparatus and a link w is pivoted to the said link v at one end.
This link w is provided at its other end with a slot w¹ which engages with a pin x
on a bracket y secured to the reservoir u; the object of the link being to limit the
movement of the series of links by the movement allowed to the said link by the
slot w¹.
z is a spring connecting the two links 8 and for the purpose of normally holding
the valve in such position that the outlets from the pump cylinder b are closed, that
is to say, in the position shewn in Figure 2.
The reservoir a is provided with a device for mixing the solution therein before its
passage to the pump cylinder b. This mixer, which is of ordinary construction,
consists of a number of arins a² mounted upon a vertical spindle c¹ suitably
supported in the reservoir and adapted to be rotated by bevel gear d' operated by an
external handle e¹. f', f¹ are arms arranged in the reservoir between the arms a' of
the mixer so as to ensure the proper working of the solution.
The operation of the apparatus is as follows,-Assuming the solution to have been
well mixed in the reservoir a, the valves e and d are opened and the handle p is
pressed toward the reservoir so as to push the piston / forwards and thereby draw in
a supply of solution from the reservoir. When the piston has reached the limit
of its stroke in the forward direction, the handle is pulled outwards so as to draw back
the piston and allow the solution, which has filled the cylinder b behind the
piston, to pass through the valve j in the piston and fill the cylinder in front of the
latter. When the limit of the backward stroke of the piston has been reached,
the handle p is again pressed towards the reservoir a. The valve o being, as above
described, held closed by a spring z, the solution which now fills the cylinder 6 offers
resistance to the forward motion of the piston. The pressure upon the handle p,
therefore, causes the said lever to turn upon the piston rod i so as to move the links q, r, s
and t upon their pivots and push the valve o farther into the pump cylinder b
in such a manner as to cause it to uncover the openings 61 and 62. The solution is,
therefore, now free to escape either through the nozzle into the tube / or through the
holes 62 and n¹ so that the piston h can move forward and force the solution out of
the cylinder. When the tube has been filled, the operator releases the handle and
the spring z immediately closes the valve o thus enabling the tube to be
removed from the nozzle without the loss of any solution.
It will be obvious that the reservoir a can communicate with the front end of the
pump cylinder 6 instead of with the rear end as in the construction above described

page_text: and illustrated herewith. In this case, the piston h draws in a charge of solution
during its backward stroke instead of during its forward stroke.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is
1. A machine for filling tubes and other receptacles with rubber solution or other
substances, the said machine consisting of a reservoir in communication with one end
of a pump cylinder, the other end of which is provided with one or more outlet
openings for the solution, normally kept closed by a valve operated by a series of
links in connection with the piston-rod of the pump, substantially as hereinbefore
described.
2. In a machine for filling tubes and other receptacles with rubber solution or
other substances the combination of a reservoir, of a mixer arranged in the said
reservoir, of a pump, one end of the cylinder of which is in communication with the
reservoir, the other end of the said cylinder being provided with one or more ontlets,
of a valve controlling the said outlets and of a series of pivoted links connected with
the outlet end of the cylinder, with the outer end of the piston rod and with the
valve, substantially as herein before described.
3. The combination and arrangement of parts forming the improved machine for
filling tubes and other receptacles with rubber solution or other substances
herein before described and illustrated in the accompanying drawing.
CT
1007
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants. ·