Improvements relating to Collapsible Tubes for Containing Liquid or Semi-liquid Materials.
Year: 1897

page_text: Date of Application, 22nd Mar., 1897
Complete Specification Left, 22nd Dec., 1897-Accepted, 5th Feb., 1898.
PROVISIONAL DI MOTTICA.
Improvements relating to Collapsible Tubes for Containing Liquid
or Semi-liquid Materials.
We, JOHN SCOTT TAYLOR, of North London Colour Works, Kentish Town, N.W.,
Technical Chemist, and WINSOR & NEWTON, LIMITED, Manufacturing Artists' Colour-
men, of 38, Rathbone Place, W., do hereby declare the nature of this invention to
be as follows:-
In collapsible tubes for containing liquids or semi-liquids, or pastes, prepared by
mixing liquids or semi-liquids with solid substances, there is frequently much trouble
in preventing leakage of the contents, owing to the insecure method of closing the
bottom of the tubes at present in vogue, i.e. that of merely flattening the tube, and
folding over the edges of the metal.
It is therefore desirable to find some other means for better securing the bottom
of the tubes, if leakage is to be prevented, and the loss to the manufacturer, incident
to the tubes becoming unsaleable, obviated.
According to the present invention, the flattened and turned-over end of the metal
tube is gripped by means of a metal spring, which presses together the folds of the
tube, and renders the escape of the contents, through the bottom, quite impossible,
even in the case of liquid substances.
The securing spring, in its preferred form, is an open cylindrical tube of spring
steel or other suitable metal, which is applied to the end of the collapsible tube by a
suitable tool, such as two pairs of oppositely arranged jaws, contrived to enter the
open ends of the spring tube, and recessed to admit of their withdrawal, when the
spring is fixed in position.
By separating the jaws, the tube is forced open sufficiently to receive the bottom
fold of the tube through its side. The closing of the jaws, by releasing the spring,
allows the latter to grip the tube, and hold it firmly closed.
It will be understood that the form of the gripping spring may be somewhat
varied, according to circumstances, as also the mechanism or tool for affixing the
same in position.
NEWTON & SON,
Agents for the Applicants.
Improvements relating to Collapsible Tubes for Containing Liquid
or Semi-liquid Materials.
We, JOHN SCOTT TAYLOR, of North London Colour Works, Kentish Town, N.W.
Technical Chemist, and WINSOR & NEWTON, LIMITED, Manufacturing Artists' Colourmen,
[Price 8d.]

page_text: of 38, Rathbone Place, W., 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:-
In collapsible tubes for containing liquids or semi-liquids, or pastes prepared by
mixing liquids or semi-liquids with solid substances, there is frequently much trouble
in preventing leakage of the contents, owing to the insecure method of closing the
bottom of the tubes at present in vogue, i.e., that of merely flattening the tube and
folding over the edges of the metal. It is therefore desirable to find some other
means for better securing the bottom of the tubes, if leakage is to be prevented,
and the loss to the manufacturer, incident to the tubes becoming unsaleable,
obviated.
According to the present invention, the flattened and turned-over end of the metal
tube is gripped by means of a metal spring, which presses together the folds of the
tube, and renders the escape of the contents through the bottom quite impossible,
even in the case of liquid substances.
In the accompanying drawing,
Fig. 1 shews, in elevation, a collapsible tube closed according to the present
invention.
Figs. 2 and 3 are diagram views on a somewhat larger scale, illustrating two
forms of closing clips, and
Figs. 4 and 5 are front elevation and plan view of a convenient device for affixing
.the closing clip to the end of the tube.
A is an ordinary collapsible tube, which, being filled with liquid, semi-liquid, or
paste, has its end flattened and turned over in the ordinary way.
To secure the
turned-over end according to this invention, so as to prevent leakage, the spring
clip B is affixed to the folded or turned over part, so as to grip the same, and press
the folds closely together.
The drawing shews two forms of clip, an open cylindrical tube of spring steel,
shewn in Figs. 1 and 2, which is the preferred form, and a flatter or U-shaped clip
(see Fig. 3).
To affix the spring clip B to the turned-over end of the tube A, any con-
venient tool may be used, but that shown in Figs. 4 and 5 has been found to act
admirably.
This tool comprises two pairs of oppositely arranged expanding jaws, c, c¹,
pivotted at the summit of pillars C C¹. One jaw c of each pair is fixed by a bolt to
a pillar d, while the jaws are normally held together by tension springs e, e¹, passing
through them. F, F1, are cain levers for forcing apart the jaws, against the force of
the springs e, e¹, when required.
The ends or noses of the jaws c, c¹, are narrowed, and reduced in dimensions, as
seen in the drawing, so as to enter freely into the ends of the spring clip B. Each
pair of jaws have also between them a recess g, to provide free space for the folded
end of the tube A, when introduced between them.
One pair of jaws, for instance, that carried by the pillar C¹, is supported on a
slide H, while the other pair is fixed to the bed-plate. The slide H is normally held
advanced by the spring h, but may be retired, when required, by means of the hand
lever I fulcrummed to the bed plate.
To affix a spring clip to a collapsible tube, the clip is slipped onto the noses of the
jaws, which are introduced into the opposite ends thereof. The jaws are then opened,
so as to expand the open side of the spring tube, and the folded end of the collapsible
tube is introduced, taking care that the open side of the clip B shall be in line with
the recess g in the jaws. Thus, when the jaws are again released, they are free to
close, leaving the spring clip B gripping fast onto the tube A at its turned
over end.
By retiring the slide H, the nose of one pair of jaws is withdrawn from the
clip, and the removal from both pairs of jaws is thereby permitted. The clip is
thus quickly affixed to the collapsible tube, the folds of which it firmly compresses,
and prevents the leakage of the contents.

page_text: 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. Closing the turned-over or folded ends of collapsible tubes by means of spring
clips in the manner described and for the purpose set forth.
2. The hereinbefore described means for affixing spring clips to the folded ends
of collapsible tubes, such means comprising oppositely arranged expanding jaws
constructed and operating substantially as set forth with reference to the
drawings.
Dated this 92nd do v f saambox 10077
NEWTON & SON,
Agents for the Applicants.