An Improved Spring Joint for Self-closing Umbrellas.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
An Improved Spring Joint for Self-closing Umbrellas.
I, OLIVIER LEVILLY, of Gravigny (Eure), in the Republic of France, Manu-
facturer, do hereby declare the nature of this invention to be as follows;-
In the forms of self-closing umbrellas as hitherto constructed, the soure what
frequent rupture of a joint spring, which spring effects the automatic closing,
necessitates the replacement of the damaged spring which is a difficult operation
occupying a considerable time. When this spring is a flat one, its rupture at
some point in its length causes the two ends of the spring to prevent the umbrella
from operating, the ends penetrating the umbrella cover.
The object of my invention is to obviate these defects and to enable a prompt
and ready replacement of a damaged spring to be effected.
In carrying my invention into practice the rib and the support are jointed in
the usual manner, the pivot passing through the cheeks of an attachment. In
addition a pin is arranged between the cheeks of this attachment slightly above
the pivot, that is to say somewhat nearer to the articulation of the rib with the
crown piece or top notch..
The fork or support is provided with a hook, the rod of which is riveted behind
the said fork of U-shaped section.
It is between this hook of the fork and the pin, which is excentric with respect
to the joint, that the spring is fitted. This latter bears on the one hand against
the bottom of the hook beneath which it is engaged and on the other hand against
the said pin; for this purpose the spring, the width of which is such that it is
able to enter the hollow of the U-shaped fork, is flat so that it may engage beneath
the hook at its extremity whilst its other extremity is bent at a right angle to
permit of its application upon the pin, this extremity of the spring being formed
with a small fork intended to embrace the pin.
It will be seen that this spring, which bends when the umbrella is opened is
well adapted to re-act in such a manner as to close the umbrella although sup-
ported only at its extremities.
If this spring should break in use, the two portions of the broken spring fall as
they are no longer retained; they do not remain in the umbrella and cannot there-
fore pierce and damage the cover. In addition to this, it is not necessary to
separate the fork and the rib, the spring of which has broken, in order to fit a new
spring; it is only necessary to first engage the flat end of the spring beneath the
hook, then to suitably bend the spring by hand and to bring its forked extremity
opposite the excentric pin.
D
10th 1. of June 1800
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: I, OLIVIER LEVILLY, of Gravigny (Eure), in the Republic of France, Manu-
facturer, 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 the form of self-closing umbrellas as hitherto constructed, the somewhat
frequent rupture of a joint spring, which spring effects the automatic closing,
necessitates the replacement of the damaged spring which is a difficult operation
occupying a considerable time. When this spring is a flat one, its rupture at
some point in its length causes the two ends of the spring to prevent the umbrella
from operating, the ends penetrating the umbrella cover.
The object of my invention is to obviate these defects and to enable a prompt
and ready replacement of a damaged spring to be effected.
My invention is illustrated in the accompanying drawing, in which:
Figure 1 is a side elevation of the arrangement in a closed position.
Figure 2 shows the rib and the jointed support in an open position, and
Figures 3 and 4 are two detail views representing the flat joint spring.
In carrying my invention into practice the rib B and the support I are jointed
in the usual manner, the pivot a passing through the cheeks of an attachment g.
In addition a pin b is arranged between the cheeks of this attachment slightly
above the pivot a, that is to say somewhat nearer to the articulation of the rib
with the crown piece or top notch.
The fork or support of U shape in section is provided with a hook c, the rod
of which is riveted behind the said fork.
It is between this hook c of the fork and the pin b, which is excentric with
respect to the joint, that the spring is fitted. This latter bears on the one hand
against the bottom of the hook beneath which it is engaged and on the other
hand against the said pin b, for this purpose the spring r (see Figures 3 and 4),
the width of which is such that it is able to enter the hollow of the U-shaped
fork, is flat so that it may engage beneath the hook at its extremity e, whilst its
other extremity is bent at a right angle to permit of its application upon the
pin b, this extremity of the spring being formed with a small fork f intended
to embrace the pin b.
It will be seen that this spring, which bends when the umbrella is opened
(Figure 2) is well adapted to re-act in such a manner as to close the umbrella
although supported only at its extremities.
If this spring should break in use, the two portions of the broken spring fall
as they are no longer retained; they do not remain in the umbrella and cannot
therefore pierce and damage the cover. In addition to this, it is not necessary
to separate the fork and the rib the spring of which has broken in order to fit
a new spring; it is only necessary to first engage the flat end e of the spring
beneath the hook c, then to suitably bend the spring r by hand and to bring its
forked extremity opposite the excentric pin b.
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 I
claim is:-
-
The arrangement of joints for the ribs and forks of automatically closing
umbrellas provided with a fat ouring ancilu maulanakla

page_text: attached by its two extremities, one to a stud rivetted to the fork and the other to
a pin slightly eccentric to the pivot of the rib and fork.
1
1 1900
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.