Improvements in Hinges.
Year: 1899

page_text: Date of Application, 29th July, 1899-Accepted, 23rd Sept., 1899
Improvements in Hinges.
I, FRIEDRICH LIEDGENS, of Vohwinkel, near Elberfeld, Rhenish Prussia,
Germany, Gentleman, 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 improvements in door hinges and the like by means
of which a hinge may be used for doors opening left ways or rights ways and
also for so called pendulum or flap doors, that is for doors opening and closing
either way, right and left and at the same time. The new hinge shall cause
an open door to close automatically by its own weight.
I attain these objects by means of the hinge shown in various views on
the accompanying drawing and described hereafter, in which
Fig. 1 shows the hinge arranged for a door opening leftways, the door closed;
Fig. 2 shows the same in position when the door is open;
Fig. 3 shows the hinge in a sectional plan;
Figs. 4 and 5 shows the hinge in plan and elevation arranged for a door open-
ing right ways;
Fig. 6 and 7 shows the same in two similar views arranged for a pendulum
door;
Fig. 8 shows one of the bosses placed between the upper and lower half of
the hinge in elevation and plan.
The new hinge consists of the two parts A and B each with the pinboss C
and D respectively and the pin E fixed in one of them as usual. The two pin-
bosses however do not stand directly one upon the other; between them I place
two separate bosses or nuts F and G. These engage with their respective pin-
bosses, the one at its upper side, the other at its lower side, by 4 teeth H into
corresponding recesses I of the pin bosses placed at right angle to each other or
separated from each other by 90 degrees. At the sides facing each other they
are screw shaped as best seen by Figure 2.
The weight of the door to which one half is fixed, the other half being fixed
at the door posts, presses the teeth of each nut always into the respective recesses
in the corresponding pin boss and so hinders them from separation. From this
it will be understood that when the hinge fixed to the door will be turned with
the same it will raise the door like a nut turned on a screw bolt (Figs. 1 and 2)
and also that when the pitch of the screw thread is steep enough, that the door
in pressing upon the screw of the nut will, by its own weight, close the door
as soon as it is left free.
The teeth H on the nuts and the respective recesses I in the pin bosses being
set at 90 degrees from each other it will be easily understood, that it requires
only turning of the nuts by a right angle and resetting them to make the hinge
fit for either a door opening right ways or one opening left ways (Figs. 1-3
and 45) and if the nuts are turned by 180 degrees the hinges are fit for use
with so called flap doors or pendulum doors opening both ways Fig. 6 and 7.

page_text: No springs or other complicated devices are required to close the doors in such
cases, they always return to the normal or closed position by their own gravity.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
-
In door hinges and the like in combination with the half 13 of the hinge a
pin E fixed therein, recesses I on the upper side of the pin boss D, a nut G
having teeth H at its lower side to correspond to said recesses and being screw
shaped at its upper side, an upper half A having similar recesses I at its lower
side engaging with teeth H of a corresponding nut F and being free to turn
upon the upper part of the pin E, the whole as described and illustrated and for
the purpose set forth.
Barmen. the 25th day of July 1899.
FRIEDRICH LIEDGENS.
Per Karl J. Mayer,
Agent.