IMPROVEMENTS IN HINGES FOR DOORS AND THE LIKE A communication from O. Empire.
Year: 1883

page_text: LETTERS PATENT to Gerard Wenzeslaus von Nawrocki Proprietor of the
firm of J. Brandt & G. W v Nawrocki, Patent Solicitor and Civil Engineer
of 124 Liepzigerstrasse Berlin Germany for an Invention of "IMPROVEMENTS
IN HINGES FOR DOORS AND THE LIKE A communication from O. A Ludewig
of Stettin in the German Empire.
"
PROVISIONAL SPECIFICATION left by the said Gerard Wenzeslaus von
Nawrocki at the Office of the Commissioners of Patents on the 5th February
1883.
GERARD WENZESLAUS VON NAWROCKI, Proprietor of the firm of J. Brandt &
G. W v Nawrocki Patent Solicitor and Civil Engineer of 124 Liepzigerstrasse
Berlin Germany
"IMPROVEMENTS IN HINGES FOR DOORS AND THE LIKE
Communication from O. A Ludewig of Stettin in the German Empire)
(A
The object of this invention is to enable the pivot pin of hinge to be readily and
safely cleaned and oiled. To this end the rolled (bent or curved) part of the upper
hinge is made in two halves which are so jointed or hinged together, that if
access is to be had to the pivot pin for the purpose of cleaning or oiling the same,
it will only be necessary to open one half of the hinge. To prevent the half part
opening accidentally both parts of the hinge are made with a projection on their
top and screw threaded. The button tapped to form a nut is screwed on and
serves not only thus securely to unite the two halves of the hinge but also to
prevent the entrance of dust and other dirt. The button may however be simply
slipped on or jointed to the hinge. The oil which may drip off is caught by a
disc shaped like a shallow dish and arranged between the upper and the lower
hinge and thus serving as a bearing for the upper hinge to work upon.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Gerard Wenzeslaus von Nawrocki in the Great Scal Patent Office
on the 3rd August 1883.
GERARD WENZESLAUS VON NAWROCKI Proprietor of the firm of J. Brandt &
G. W. v. Nawrocki Patent Solicitor and Civil Engineer of 124 Liepzigerstrasse,
Berlin, Germany "IMPROVEMENTS IN HINGES FOR DOORS AND THE LIKE (A
communication from O. A. Ludewig of Stettin in the German Empire)
"
Hinges constructed according to this invention are especially applicable to doors
and similar purposes.
The invention will be best understood by reference to the
accompanying drawing, in which such a hinge is shown in Figure 1. in (partly
sectional) elevation and in Figure 2. in section on line A B Figure 1. The invention
has for its object to enable the pivot pin a of the hinge to be readily and safely
cleaned and oiled.
To this end the rolled bent or curved part of the upper hinge D is made in two
halves which are so jointed or hinged together, that if access is to be had to the
pivot pin a for the purpose of cleaning or oiling the same, it will only be necessary
to open the one half b of the hinge D, so that it assumes the position represented
by the dotted lines in Figure 2. To prevent the said half part b from opening
accidentally, both parts of the hinge D are made with a projection on their top
and screwthreaded. The button or cap F tapped to form a nut is screwed on and
thus serves not only to securely unite the two halves of this part of the hinge but
also to prevent the entrance of dust and other dirt.
The button or cap F may
however be simply slipped on or jointed to the hinge. The oil which may drip off
is caught by a disc d shaped like a shallow dish and arranged between the upper
and the lower hinge and thus serving as a bearing for the upper hinge to work
upon.
And Having thus described and ascertained the nature of this invention and the
manner of carrying the same into effect as communicated to me I declare that I
Claim.
In hinges the construction of the curved part of the upper hinge in two parts or
halves in combination with the button F which holds the two parts together and
with the disc d which serves to catch the dripping oil substantially as described
and as illustrated in the accompanying drawings.
In witness whereof I the said Gerard Wenzeslaus von Nawrocki have here-
unto set my hand and seal this Twenty fourth day of July in the year of our
Lord One thousand eight hundred and eighty three.