Improvements in Valves for the Tyres of Velocipedes.
Year: 1896

page_text: Date of Application, 24th Aug., 1896.
Complete Specification Left, 20th Apr., 1897-Accepted, 3rd July, 1897
Empire of Germany.]
Improvements in Valves for the Tyres of Velocipedes.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents, 45
Southampton Buildings, in the County of Middlesex, do hereby declare the nature of
this invention to be as follows:-
This invention relates to valves for cycle-wheel tyres, having a valve situated
outside the valve socket, and the rear side of which can be screwed against the outlet
orifice of the socket.
In valves for cycle-wheel tyres the chief problem lies in taking account of the
extremely small dimensions which such a valve must have, without jeopardizing the
effective operation of the same.
All the arrangements heretofore known have answered this requirement only to a
limited extent, as almost all of them contain the valve proper in that part which
passes through the rim, that is to say in the socket, thereby necessitating a
comparatively large hole in the rim, in consequence of which the stability of the same
has been decreased.
For obviating and remedying all the aforesaid in conveniences I have constructed
a valve hereinafter described according to the present invention.
The valve comprises a socket provided with a screw thread at its lower part, this
socket possessing an axial channel and being secured in the well-known manner to the
rubber tyre, that is to say by means of a nut and the use of a counter disc. For
fixing the socket, thus connected with the rubber tyre to the rim I employ a nút.
This nut or preferably a nut or packing gland specially screwed on, possesses at its
upper end a screw thread on the outside for carrying the coupling nut. By this
arrangement the valve seat which is shut off by the coupling nut by means of any
desired packing against the socket can be inade of any dimensions irrespective of the
size of the socket. Thus I may for instance give to the socket, which here serves as
an air channel and not for the reception of an entire valve construction, a minimum
diaincter of 3 to 4 inillimetres, but to the valve seat one of more than 4 millimetres
according as the nut receives a proportionate thickness of wall.
With the extremely small dimensions, which a valve for cycle-wheel tyres must
have, the tightening surface of the valve becomes very small so that the counter
pressure upon the small surface of the valve is not sufficient for so pressing the latter
against its tightening-surface that the automatic action of the valve would alone be
enough.
In order to provide nevertheless for an absolutely tight closing of the inlet and
outlet orifice, the several parts are constructed in such a manner that after the
pumping up has taken place the entire valve casing together with the valve can be
easily screwed against the ontlet orifice of the socket.
For this purpose I provide in the valve casing a valve which has two tightening
surfaces, one of which forms the returu surface proper, whilst the other serves for the
final tightening. The lift of this valve is limited up to a certain point by the nut on
the end of the valve spindle so that the valve cannot touch the inlet and outlet orifice
of the socket while the pumping in is effected.

page_text: Between the valve casing and the nut or packing gland I arrange a packing which
forms a tight joint on all sides while allowing of a displacement of the casing, so that,
after the pumping up has taken place, the rear side of the valve can be pressed against
the outlet orifice of the socket.
Owing to the fact that the outlet orifice of the socket can be closed directly by
mechanical means I provide for the absolutely tight permanent closing; the other
tight joints at the valve seat and at the packing are therefore only used during the
pumping up, so that the intermediate rubber packing can be dispensed with at the
outer end of the valve; instead of the rubber packing I may therefore use a metal-
surface packing, which is sufficient for the short time of the tightening. By the
removal of this intermediate material at this point the casing can, during the screwing
on, turn upon the metallic surface of the valve seat and upon the metallic surface of
the valve thereby enabling the coupling nut to be dispensed with, in this instance
the casing can be directly screwed together with the nut or packing gland. The
.socket may be made as small as desired, and the valve and its casing as large as.
desired independently of the socket, inasmuch as the larger packing disc, similarly to
a piston ring, is pressed against the cylindrical wall of the socket.
The great advantage of this constructional form therefore lies not only in the fact
that all parts can be made large or small in accordance with the object to be
achieved, but also in the fact that outside the tyre forming an air chamber the inlet
and outlet orifice of the sooket can be closed directly by mechanical means, 80 that
after the closing of this principal orifice all the automatic or mechanical tightening
devices possessing the well known defects can be dispensed with by reason of the new
permanent closing device.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.O., Agents for the Applicant.
Improvements in Valves for the Tyres of Velocipedes.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents, 45,
Southampton Buildings, in the County of Middlesex, 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 valves for cycle-wheel tyres, having a valve situated
outside the valve socket, and the rear side of which can be screwed against the outlet
orifice of the socket.
In valves for cycle-wheel tyres the chief problem lies in taking account of the
extremely small dimensions which such a valve must have, without jeopardizing
the effective operation of the same.
All the arrangements heretofore known have answered this requirement only to a
limited extent, as almost all of them contain the valve proper in that part which
passes through the rim, that is to say in the socket, thereby necessitating a
comparatively large hole in the rim, in consequence of which the stability of the
satne has been decreased.
The improved valve can be easily detached together with the valve casing from
the tubular connection cominunicating with the interior of the pneumatic tyre; the
valve casing moreover is so arranged that it can be sorewed down upon the tubular
connection, in order that, after the inflation has been effected, the rear surface of the
valve may be forced down upon the orifice of the said tubular connection and thereby
effect a tight closing of the pneumatic tyre.

page_text: Figures 2 and 3 show modifications of the valve proper.
Figure 4 is a vertical section of a modified form of valve.
Figure 5 shows an elevation of the valve separately.
Figure 6 is a vertical section of a further modified forin of the improved valve.
Figure 7 is a detail of the valve and its guiding pin and
Figure 8 shows a slight modification in the head of the guiding pin.
Referring to Figures 1, 2 and 3 the improved valve comprises a socket at provided
with a screw thread at its lower part, this socket having an axial channel m and being
secured in the well-known manner to the rubber tyre d, that is to say by means of a
nute and the use of a counter disc c. For fixing the socket a, thus connected with
the rubber tyre d, to the rim f I employ a nut gl. This nut g¹ or preferably a nut g
specially screwed ou, possesses at its upper end a screw thread on the outside for
carrying the coupling nut. h. By this arrangement the valve seat a¹, which is shut
off by the coupling nut. h by means of any desired packing against the socket a, can
be made of any dimensions irrespective of the size of a socket. Thus I may for
instance give to the socket a, which here serves as an air channel and not for the
reception of an entire valve construction, a minimum diameter of 3 to 4 millimetres,
but to the valve seat more than 4 millimetres according as the nut g receives a
proportionate thickness of wall.
l
With the extremely small dimensions, which a valve for cycle-wheel tyres must
have, the tightening surface of the valve becomes very small so that the counter
pressure upon the small surface of the valve is not sufficient for so pressing the latter
against its tightening-surface that the automatic action of the valve would alone be
enough.
In order to provide nevertheless for an absolutely tight closing of the inlet and
outlet orifice, the several parts are constructed in such a manner that after the
pumping up has taken place the entire valve casing together with the valve can be
easily screwed against the outlet orifice of the socket.
For this purpose I provide in the valve casing i a valve k which has two tightening
surfaces, one of which forms the return surface proper, whilst the other, serves
for the final tightening. The lift of this valve k is limited up to a certain point by
the nut o, so that the valve cannot touch the inlet and outlet orifice of the socket a
while the pumping in is effected.
Between the valve casing i and the nut g I arrange a packing which forms a tight
joint on all sides while allowing of a displacement of the casing, so that, after the
pumping up has taken place, the rear side of the valve k can be pressed
against the outlet orifice a of the socket a.
Owing to the fact that the outlet orifice of the socket & can be closed directly by
mechanical means I provide for the absolutely tight permanent closing; the other
tight joints at and are therefore only used during the pumping up, so that the
intermediate rubber packing can be dispensed with atk instead of the rubber packing k;
I may therefore use a metal-surface packing, which is sufficient for the short
time of the tightening. By the removal of this intermediate material at this
point the casing i can, during the screwing on, turn upon the metallic surface of the
valve seat and upon the metallic surface of the 'valve, thereby enabling the
coupling nut to be dispensed with, in this instance the casing i can be directly
screwed together with the nut g, as shown in Figure 2. Figure 3 shows that the
socket a may be made as small. as desired, and the valve & and its casing i as large as
desired independently of the socket a, inasmuch as the larger packing disc l,
similarly to a piston ring, is pressed against the cylindrical wall of the socket a.
The great advantage of this constructional form therefore lies not only in the fact
that all parts can be made large or small in accordance with the object to be achieved,
but also in the fact that outside the tyre forming an air chamber the inlet and outlet
orifice of the socket a can be closed directly by mechanical means, so that after the
closing of this principal orifice a' all the automatic or mechanical tightening devices

page_text: possessing the well-known defects can be dispensed with by reason of the now
permanent closing device.
Referring to Figures 4 and 5 the tubular connection is as before provided with an
exterior screw thread, upon which a screw nut g, carrying the valve casing can be
easily screwed up and down. This screw nut is also provided with an exterior screw
thread adapted to engage with the interior of the valve casing so as to first so tighten
a washer in the manner analogous to the action of stuffing boxes that when turning
the casing in one direction or the other the said washer will always be tightened
against the tubular connection u.
The casing contains the valve k, which in the present case is a hollow cylindrical or
tubular body, divided by a diaphragm or partition into two unequal compartments.
The upper compartment contains a rubber or leather washer, and the lower
compartiment another washer usually made slightly thicker than the former. The
valve presenting outwardly the shape of a cylinder (Figure 5), extends over and beyond
the top surface of the upper rubber washer up to a surface which engages with
the bottom of a recess in the casing i and thereby prevents edge i' of the valve
seat from entering the rubber washer too deeply and so prematurely destroying it.
The lower end of the valve, during the down stroke of the inflating pump, bears
against the washer which for the purpose of ensuring a tight closure is arranged
between the outer surface of the tubular connection a and the valve casing g i. The
object of this washer, as already mentioned, is to prevent the compressed air from
forcing its way out of the air chamber between the screw threads, on the tubular
connection a and those on the nut g.
During the pumping action the air first passes through the upper channel 18 in the
valve casing and subsequently when the valve leaves its seat, it passes under the
edge down between the cylindrical surface of the valve K and the inner surface of
the casing i and enters the tubular connection through slits at the lower part of the
valve K. When the pumping or inflating action is completed, the whole valve body i
is screwed down whereby the top edge a¹ of the tubular connection is forced into
the lower valve washer, and so effects a reliable locking of the said valve and the
air chamber.
The upper part of the valve casing is further provided with an annular groove,
containing a washer which serves as a joint packing for the screw threaded portion mi
of the hose-coupling piece m for connecting the pump hose or pipe p. By this
arrangement the washer previously employed internally between the coupling piece m
and the screw threaded portion of the casing is avoided and thus the obstructions
frequently due to the latter method of arranging this said washer, are efficiently
prevented.
In the modification shown in Figures 67 and 8 the casing contains a valve m
which is formed of a simple cylindrical disc of leather or india rubber, as shown
separately in Figure 7, and perforated, or traversed, by a guiding pin n.
In the inflating process, the air first enters through the upper channel or port is,
along the guiding pin. Then, after the disc has descended, it passes under the lower
edge of the seat, flows down past the outer surface of the disc, and lastly enters
the nozzle a. When the inflating process is completed, the whole valve-body i is
screwed down, whereby the upper edge a' of the junction-tube or nozzle becomes
embedded in the lower surface of the washer m forming the packing, and the annular
air-chamber is tightly closed.
To prevent the disc-shaped valve from closing the orifice a¹ of the nozzle during
the inflating operation, the valve pin n is provided with a head n¹, which takes up
its position upon the port is, but is so formed that the air-passage between the head n'
and is not cut off. To this end the lower edge of the head n inay be notched (as
shown in Figure 8) or otherwise suitably shaped; or the upper edge of the nozzle
may be grooved or milled, so as to admit air laterally, as illustrated in Figure 6 at k
Instead of the pin n other guiding devices may be employed, the head n being fitted
on the pin or rod either by screwing or in any other convenient manner.
Having now particularly described and ascertained the nature of my said invention

page_text: and in what manner the same is to be performed, as communicated to me be my
foreign correspondent, I declare that what I claim is :-
1. A non-return-valve for cycle-tyres or the like with its valve proper located
outside the valve tube, the characteristic feature being that upon a nut g provided
with external screw threads a coupling nut h is screwed, which forces a casing i
containing the valve, against the above mentioned valve tube; the object being that
notwithstanding that the tubular piece or connection, passing through the rim and
the tyre, is of a comparatively sinall diameter, a comparatively large valve may be
employed.
2. A non-return-valve of the kind described in the first claim, in which the valve
casing (i) is screwed directly on the externally screw-threaded nut g, a tight closure
between these two parts being ensured by means of a washer (1). (Figures 2 and 3).
3. A non-return-valve of the kind referred to in the second claim, according to
which a cylindrical or tubular valve (k) provided with washers (and k) moves in the
interior of a valve casing (i) which can be screwed up and down; the rear washer (4)
of the said valve closing mechanically the opening (a), of the tubular connection (a),
when the valve case (i) is screwed down (Figures 4 and 5).
4. In the valve referred to in the third claim, the arrangement of an upper stop
edge () on said valve (k), this said stop edge preventing the edge (¹) of the
valve-seat from being too strongly forced into the washer (Figures 4 and 5).
5. A valve for velocipedes, characterized by a valve-case (i) which is adapted to be
screwed and down upon the nozzle or junction tube (a) by the aid of a tapped sleeve
or nut (g) packed with a flexible washer; wherein a cylindrical disc m is adapted to
move and mechanically (or automatically) to close the orifice (a) of the nozzle,
whenever the complete valve is screwed down.
6. In the valve characterized in the fifth claim, a needle or pin (such as n) passing
through the said valve and having a head (n), which, during inflation, takes up its
position on the orifice-which, however, it leaves free-and thereby limits the extent
of downward motion or downward stroke of the valve; so as to leave the orifice (a¹)
of the nozzle free to receive air.
7. In the arrangement referred to in the sixth claim, the permanent connection of
the disc m with the pin n in the form of one integral piece, the head (n¹) being fitted
on separately if desired.
Dated this 20th day of April 1897.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.