Improvements in Valves for Pneumatic Tyres.
Year: 1896

page_text: Date of Application, 9th July, 1896-Accepted, 22nd Aug., 1896
COMPLETE SPECIFICATION.
Improvements in Valves for Pneumatic Tyres.
1, HAVER HEINE, in the Firm of Haver Heine & Sohn, Vöhrenbach i/Baden,
in the Empire of Germany, Manufacturer, d 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.:-
In the valve forming the subject of this invention the valve proper, which is
bell shaped, is caused to press upon the seat formed by a conical projection
or by a conical recess, whereby a wedging action, increasing the tight closure,
is obtained between the said conical projection or recess and the valve face.
This improvement may be effected in various ways as shown in the accompanying
drawings which illustrate valves constructed according to this invention.
In Figures 1 and 2 of the said drawings, the body f, which is preferably composed
of resilient material such as indiarubber, and which in Figure 1 is represented as
a conically projecting seating, and in Figure 2 a conically recessed seating,
forms the packing between the tubular piece or nose e for the pump, and the valve
box a, as well as the seat for the bell shaped valve g. When the valve is under
pressure, a wedging action is produced between the said conical seat surface and
the face of the bell shaped valve proper, owing to the tendency of the latter to
slide over the seat f in that form of valve shown in Figure 1, or to slide into
the recessed seat shown in Figure 2. In both cases an excellent tightening effect
is obtained.
In the constructional modification illustrated by Figures 3 and 4 the nose c
is formed integrally with the valve chamber a. In this case the body f merely
loses its secondary quality of acting as a joint packing between the two constituent
parts a and c.
Instead of forming the conical seat of a resilient substance in order to secure the
tight closure of the valve, the necessary resiliency may be possessed by the
bell shaped valve proper, that is to say the seat f', while retaining the conically
projecting or conically recessed shape may be formed of hard material for example
of metal.
According to the constructional modifications shown in Figures 5 and 6 a tubular
piece g' of indiarubber or the like is inserted into the bell shaped valve proper g,
the projecting or top extremity of which passes over the conically projecting
seat . The latter may, as illustrated in Figure 5, either form an integral part
with the tubular piece or nose c and be detachable from the valve box a, or, as is
represented in Figure 6, it may be integral with both the nose c and the valve
chamber a. If the seat is to be conically recessed as shown in Figure 7, it is
made integral with the valve chamber a and with the nose c. and the tubular piece gl
of indiarubber or the like is preferably placed on the exterior of the bell shaped
valve proper. Its projecting or top edge in this case, while bearing rearwardly
against the rigid portion 9 of the bell shaped valve proper, is forced into the
conical recess¹.
Instead of a separate tubular piece of indiarubber or the like being employed, the
whole bell shaped valve proper g may, as illustrated in Figure 8, be made of
indiarubber or any other appropriate material.

page_text: 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 1
claim is
A non-return valve for hollow inflatable or pneumatic tyres, in which the
moving bell shaped valve body g rests upon a conically projecting or a conically
recessed seat ff, whereby a wedging effect, increasing the tightness of closure
between the said seat and the working face or edge of the valve proper, is obtained,
while the said seat may be made resilient and simultaneously serve as a packing
between the inlet pipe or nose c of the valve proper and the valve chamber a, or
may be integral with the valve chamber, in which latter case the bell shaped valve
proper is provided with a resilient scat edge forced, either upon the conically
projecting seat or into the conically recessed seat, as the case may be, this resilient
seat edge being obtained by means of a resilient tubular piece placed either around
the bell shaped valve proper or inserted into the same, as the case may be, or by
making the whole bell shaped valve proper of resilient material as g² substantially
as and for the purpose described.
Dated this 9th day of July 1896
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.