close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2110103

код для вставки
March 1, 1938.v
A. IBLANCHARIID
2,110,103
MEASURING VALVE FOR USE WITH COLLAPSIBLE TUBES
Filed March 27. 1936
ANDRE BLANGHA R D
INVENTOR
by file affor'neys
Patented Mar. 1, 1938
UNITE
2,110,103
STATES PATENT OFFICE
2,110,103
MEASURING VALVE FOR USE WITH COL
LAPSIBLE TUBES
André Blanchard, La Bastide, France, assignor
to Société Anonyme Etablissements Betts et
Blanchard, La Bastide, Bordeaux, France, a
corporation of France
Application March 27, 1936, Serial No. 71,208
In France November 13, 1935
11 Claims. (01. 221-—60)
This invention relates to measuring valves for
collapsible tubes and has for its principal object I. Perforations 1 put into communication the
to. provide an improved measuring valve for use hole 6 in the tubular stem with the interior
of the tube when the valve is open. This tubu
with these tubes.
stem is guided in any suitable manner in the
The present invention consists in the provision lar
nozzle 2, in such a
of a, measuring valve for use with collapsible
tubes wherein the automatic advancement of the
valve under the in?uence of the pressure exerted
on the. tube ensures the closure at the desired
moment of the evacuating ori?ce or ori?ces.
A convenientform of the invention will here
inafter be described, together with a modi?ca
tion thereof, which is given only by way of ex
ample; with reference to the accompanying draw
15 ing in which:—
‘
Fig. 1 shows in axial longitudinal section one
form of the invention comprising a valve and
cap in a tube nozzle;
Fig. 2 is an axial longitudinal section View
through the valve alone;
Fig. 3. is an- axial longitudinal section through
the cap alone;
'
Fig. 4ii is an axial longitudinal section of an
other form of the invention.
.25
Hitherto collapsible tubes generally have been
closed by a screw-threaded stopper. the mate
rial contained in the tube being expelled by sim
ple pressure on the tube after the stopper has
been unscrewed. Under these conditions, an in
de?nite quantity of material'was expelled at each
pressure, any prolonged pressure causing the con
tents of the tube to be expelled without stop
ping.
The invention has several advantages.
On
“ the one hand, from a constructional point of
View, tubes having a smooth nozzle are easy to
manufacture and it is also easier to put the
screw-thread on the valve than on the tube. The
thread is the only part which is delicate to man
ufacture. It has, moreover, the advantage in
certain lead tubes plated with tin that the lead
is not exposed when making the screw-thread.
Another advantage lies in the fact that the plac~
ing in position of the cap eifects the closing of the
valve, so that when the cap is unscrewed the
valve is still closed and can only be opened by
manipulation by the user. Therefore there is
no danger, as there is frequently with tubes hith
erto in use, of the material being expelled from
50 the tube when the cap is unscrewed.
From the arangement shown in Figures 1 to
3, it will be seen that there is a smooth nozzle
2 of a collapsible tube l, a valve with a tubular
stem 4 of which the ?at part 5 is adapted to be
applied to the internal upper surface of the tube
way that it cannot turn in '
the nozzle and is only permitted a longitudinal
movement. The guide in question may be con
stituted for example by a longitudinal‘ grooving
or milling provided on a slightly thickened part
of the stem of the valve. This grooving or mill
ing wears a passage in the lead of the nozzle
suflicient to ensure guidance. The plate of the
valve may be provided with a groove II, which
permits the maintenance of the valve in position,
by means of an appropriate tool correctly cen 15
tered at the time of its ?rst being placed in‘ po
sition.
At its upper part the tubular stem '4 of the
valve has a screw-thread 12 adapted to pass into
the nozzle 2. This screw-thread I2 is adapted
to co-operate with an internal screw-thread l3
of the cap 3. This cap also has a conical por
tion Ill‘ adapted to co-operate with the exterior
conicity of the nozzle 2. Tightness of the 010
sure is ensured on the one hand by the disc l5 925
of. cork or other similar material lodged ‘in the
cap and supported on the edge of the tubular
stem 4 and on the other handuby the co-oper
ation of the conical portions M of the cap with
the. external conicity of the nozzle 2, and ?nally, 30
in addition, by the. bearing of the upper part of
the ?at part 5 against the interior of the upper
part of the tube, this hearing being ensured‘ by
the pressure of the cap 3 which is supported on
the‘ nozzle 2.
i
"
‘
35
The operation of the device is as follows:—
The cap is unscrewed and the tubular stem
is thrust back toward the interior of the tube,
for example by pressing the surface against an
object, and pressure is applied to the tube. A 40
predetermined quantity of the material will
come out which corresponds to the stroke of
the valve necessary for the perforations 3 to be
reclosed. At the same time the screw-thread is
re-projected outside the nozzle.
45
The method of construction of Figure 4 is very
similar, but the cap 3*‘ is much smaller and simply
bears on the edge of the nozzle 2, without hav
ing the supplementary closure assured in Figure
1 by conicity of the nozzle 2.
The operation is the same as in the preceding
case. The ?at part of the valve and the holes
may, of course, be of any shape and size. The
valve and its stem may be made of any suitable 55
2,110,103
2
material, for example, material known under the
registered trade-mark as bakelite, or the like.
It will of course be understood that it is pos
sible to regulate the quantity of material evacu
ated by modifying the evacuating ori?ces or by
the effect on the speed of advancement of the
valve. This speed is governed by varying the
cross-section of the outlet nozzle and by modi
fying the surface of the head of the valve, or by
10 one or the other of these two means.
What I claim is:
1. A collapsible tube having a nozzle, a valve
slidable in said nozzle and having a stem pro
jecting from said nozzle, screw threads on said
15 stem, means a?ording a passage for extrusion of
the tube contents when said valve is pressed in
wardly, and a cap which, when screwed on said
stem prevents extrusion of the tube contents.
2. A collapsible tube having a nozzle which is
20 smooth both internally and externally, a valve
slidable in said nozzle and having a stem pro
jecting from said nozzle, screw threads on said
stem, means affording a passage for extrusion of
the tube contents when said valve is pressed in
25 wardly, and a cap which, when screwed on said
stem prevents extrusion of the tube contents.
3. A collapsible tube having a nozzle, a valve
slidable in said nozzle and having a stem pro
jecting from said nozzle, said valve having a
30 passage therethrough, screw threads on said
stem, and a cap adapted to be screwed on said
stem to engage said nozzle and prevent extrusion
of the tube contents.
4. A collapsible tube having a nozzle which is
35 smooth internally and externally, a valve slid
able in said nozzle and having a stem projecting
from said nozzle, said valve having a passage
therethrough, screw threads on said stem, a cap
adapted to be screwed on said stem and having
40 a conical skirt adapted to engage with the
exterior of said nozzle to prevent extrusionof the
tube ‘contents.
5. A collapsible tube having a nozzle which is
smooth internally and externally, a valve ‘slid
45 able in said nozzle and having a screw threaded
stem with a screw-threaded end projecting from
said nozzle, said valve when pressed inwardly
permitting‘extrusion of the tube contents, and
when pressed outwardly preventing such ex
50 trusion, and a cap which when screwed on said
stem holds said valve in the latter position, and
said cap itself engaging with said nozzle to
prevent extrusion of the tube contents.
,
6. A collapsible tube having a nozzle, a valve
55 slidable in said nozzle and having a stem pro
jeoting from said nozzle, screw threads on said
stem, and a cap adaptedto be screwed on said
stem and guiding means on the valve prevent
ing rotation of said valve within said nozzle.'
7. A collapsible tube having a nozzle, a valve
slidable in said nozzle and having a stem pro
jecting from said nozzle, said valve having an
axial bore and a plurality of radial bores lead
ing to said axial bore from the interior of the
tube, a cap adapted to be screwed on said stem 10
and to close said valve and said tube.
8. A collapsible tube having a nozzle, a valve
slidable in said nozzle and having a screw
threaded stem projecting from said nozzle,
means affording a passage for extrusion of the 15
tube contents when said valve is pressed in
wardly, said valve moving outwardly to close
said passage by pressure of the tube contents, and
a caprwhich, when screwed on said stem, pre
vents‘ extrusion of the tube contents.
,9.,A collapsible tube having a nozzle, a valve
member having an axial passage and being slid
able in said nozzle and having a screw-threaded
stem projecting from said nozzle, the inner end
‘of said valve member being‘closed and having a 25
flange, said valve member being provided with
at least one radial passage into said axial pas
sage near said end whereby the tube contents
may'pass out of the other end of said valve »
30
member.
10. A collapsible tube having a nozzle, a valve
member having an axial passage and being slid-g
able in said nozzle and having a screw-threaded
stem projecting from said nozzle, the inner end
of said valve member being closed and having a
?ange, said valve member being provided with
at least one radial passage into said axial pas
sage near said end whereby the tube contents
may pass out of the other end of said valve mem
ber, said valve member being pressed outwardly 40
of said nozzle by the tube contents to interrupt
extrusion of said contents when a predetermined
amount of said contents has been extruded.
11. A collapsible tube having a nozzle, a valve
member having an axial passage and being slid 45
able in said nozzle and having a screw-threaded
stem projecting from said nozzle, the inner end
of said valve member being closed and having a
?ange, said valve member being provided with
at least one radial passage into said axial pas 50
sage near said end whereby the tube contents
may pass out of the other end of said valve mem
ber and a capwhich, when screwed on said stem,
prevents extrusion of the tube contents.
A. BLANCI-IARD.
55
Документ
Категория
Без категории
Просмотров
0
Размер файла
318 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа