Improvements in Fastenings for Doors and the like.
Year: 1894

page_text: Date of Application, 23rd Jn., 1894
*omplete Specification Left, 5th Feb., 1894-Accepted, 11th Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in Fastenings for Doors and the like.
I, FRANZ MARTIN HEINRICH WEISS, of 1 Vorsetzen 18/19, Hamburg,
Germany, Engineer, do hereby declare the nature of this invention to be as
follows: :—
My invention relates to fastenings for doors and the like and its object is to
obviate the disadvantage that has hitherto been possessed by catches used in
connection with latches of occasionally allowing the door to re-open on its rebound
after being quickly shut.
Now my invention relates to fastening means not open to such an objection, and
in order that the nature of the invention may be clearly understood I will proceed
to describe the same with reference to the accompanying drawings.
and
In these drawings,
Fig. 1 shows a side-view; and
Fig. 2 in front view of a catch and latch constructed according to my invention;
Figs. 3, 4 and 5 represent my invention applied to a door and so arranged as to
automatically secure the door in an open position.
According to any invention I employ a catch a, which is provided with a sickle-
shaped projection or finger c which projects over the notch 6 of the catch: On the
shutting of the door the latch d strikes against the finger c and is guided by the
lower edge thereof in such a manner that it falls into the notch b. Both the latch d
and the notch b are made V-shaped (see Fig. 1) in order to prevent any motion of
the latch in the notch when the door is in its closed position; the V-shaped form
of the latch and notch also ensures the proper engagement of the latch in the notch
when the latch is worn.
Catches of this kind can be arranged in a variety of ways one example of which
is illustrated in Figs. 3, 4 and 5. In this case the catch and its latch serve to
retain the door in an open, instead of a closed position. For this purpose the
latch d is secured on the door f and the catch a is fixed on the door jamb or the
wall g in a suitable position for engaging the latch d when the door is sufficiently
opened. The operation of the catch is precisely similarly to that hereinbefore
described with reference to its application for keeping the door closed.
The latch may be arranged to be raised out of engagement so that the same
can be loosened with the catch either directly by hand or indirectly by means of a
suitable arrangement, as indicated in Fig. 4.
Dated this 23rd day of January 1894
Improvements in Fastenings for Doors and the like.
I, FRANZ MARTIN HEINRICH WEISS, of I Vorsetzen 18/19 Hamburg,
Germany, Engineer, 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:-
My invention relates to fastenings for doors and the like and its object is to

page_text: obviate the disadvantage that has hitherto frequently obtained with ordinary
catches used in connection with latches especially when the latter work stiffly
on their pivots, of occasionally allowing the door to re-open on its rebound after
being quickly shut.
Now my invention relates to improved fastenings means designed to obviate
such an objection, and in order that the nature thereof may be clearly understood,
I will proceed to describe the same with reference to the drawings filed with my
Provisional Specification in which
Fig. 1 shows in side-view; and
Fig. 2 in front view, a catch and latch constructed according to my invention;
and
Figs. 3, 4 and 5 show such a latch and catch to a smaller scale so arranged as to
automatically secure the door in an open position.
According to my invention the catch a, is provided with a sickle-shaped projection
or finger c arranged to project over the notch or recess b of the catch as shown so
that on the shutting of the door, the pivoted latch d will, after sliding up the
inclined front edge of the catch, strike against the said projection or finger c and
be guided by the lower curved edge thereof in such a manner that it will fall into
the notch 6 and securely bold the door or other body to which the latch is pivoted.
Both the latch d and the notch are made of vee or wedge shape as seen in
end or side view (see Fig. 1) in order to prevent any motion of the latch in the
notch when the door is in its closed position; the vee or wedge shape form of the
latch and notch also ensures the proper engagement of the latch in the notch when
the latch is worn.
Fastenings of the kind described can be arranged in a variety of ways, one
example of which is illustrated in Figs. 3, 4 and 5. In this case the catch_and its
latch serve to retain the door in an open, instead of a closed position. For this
purpose the latch d is pivotted on the door f, and the catch a is fixed on the
wall g in a suitable position for engaging the latch d when the door is sufficiently
opened. The operation of the catch in this case is precisely similar to that of
the catch herein before described with reference to its application for keeping the
door closed.
The latch may be arranged to be raised out of engagement with the catch either
directly by hand or indirectly by means of any suitable arrangement, such as a rod
as indicated in dotted lines in Fig. 4 that is connected to the latch and arranged to
be moved vertically by the door handle.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In a fastening device of the kind herein referred to, a catch having a
curved projection or finger c arranged to project over the notch or recess 6 of
the catch for the purpose of constraining and conducting the latch into the said
notch or recess when the latch and catch are brought into contact with each other
substantially as described.
2. The improved fastening device hereinbefore described and shown in the
drawings, wherein the catch a is provided with a curved projection or finger c, and
the notch or recess b in the catch and the corresponding part of the latch d are of
vee or wedge shape for the purposes mentioned.
Dated this 5th day of January 1894.