Year: 1898

page_text: BRUNO KRASSELT, Manufacturer, resident of Berlin, Königgrätzerstrasse 53,
Germany, do hereby declare the nature of my invention to be as follows:-
My invention relates to certain new and useful improvements in hinges and
it consists more especially in the construction and the combination of the parts.
as will hereinafter he fully set forth and specifically pointed out in the drawings
whereby an easy and quick engaging and disengaging of the two hinge parts is
attained.
In order to make my invention more easily understood I have illustrated it
on the accompanying sheet of drawings, in which Fig. 1 shows a plan view of a
box, such as is used for protecting gas or water cocks, the cover of which is
hinged to the body of the box by means of my improved hinge.
Fig. 2 shows a transverse sectional view.
The cover is provided with a bore g the upper part of which is threaded into
this bore a screw is introduced having a smooth lower part and a cone shaped
point, as is clearly shown in Fig. 2.
Two bores are arranged in the cover b, extending at right angles and
about, midways from said bore g. In either bore a truuion d is provided,
fitting loosely, so as to easily glide in the bore. The inner ends i.e. the ends facing
the bore gare cone shaped and flattened, while the outer ends are pointed. When
the cover is to be hinged to the box, screw f is to be taken out and the two
trunnions are to be pushed back, so that their pointed outer ends are flush with the
edge of the cover. This latter is now put in position upon the box, the screw f
is inserted and screwed down, when its lower cone shaped end will meet the
These
correspondingly icone shaped, flattened ends of the trunnions d.
trunnions are now pushed outward in opposite directions and their pointed ends
will enter the bores or holes provided in the wall of the box, thereby effecting the
hinge connection between cover and box. For disengaging the cover from the hox
it is only necessary to remove screw f, when by lifting the cover, the trunnions
will be pushed inwards by the slanting trunnion hole wall.
I have described in the foregoing only one way of carrying out my invention,
but it is obvious, that my invention can be made use of in various ways and I
want it to be particularly understood, that I do not limit myself to the exact shape
or position of the various parts, as shown in the drawings, as these have to vary
according to circumstances, but
What I do claim as new and desire to secure by Letters l'atent is:
In a hinge the cover b, the partially threaded bore g, the pointed screw f.
the hores i receiving the two trunnions dd, having cone shaped flattened inner
ends and pointed outer ends, in combination with the bores or holes provided

page_text: in the wall of the box a for receiving the pointed trunnion ends, as and for the
purpose specified.
Improvements in Hinges.
I, BRUNO KRASSELT, of Koeniggraetzerstrasse 53, Berlin, Germany, 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: -
The present invention relates to certain new and useful improvements in
hinges and consists more especially in the construction and combination of parts
as will hereinafter be fully set forth and specifically pointed out in the claims,
whereby an easy and quick engaging and disengaging of the two hinge parts
is attained.
In order to make my invention more readily understood I have illustrated
it on the accompanying sheets of drawings of which Fig. 1 shows a plan view
of a box, such as used for protecting gas or water cocks, the cover of which is
hinged to the body of the box by means of my improved hinge connection.
Fig. 2 is a transverse sectional elevation of Fig. 1.
Fig. 3&4 show two other forms of my improved hinge connection in
sectional elevation.
b
a
Referring to Fig. 1 & 2 the cover b is provided with a bore hole
the upper
part of which is threaded; into this bore hole a screw f is introduced having
smooth lower part and running out into a pointed cone, as is clearly shown in
Fig. 2. Two bore holes i, are arranged in the cover 6 extending at right angles
and about midways from said bore hole g. In either bore hole i, a trunnion d
is provided fitting loosely so as to easily glide therein. The inner ends, i. e the
ends facing the bore hole g are cone-shaped and flattened, while the outer ends
are pointed. When the cover is to be hinged to the box a, screw f is to be
taken out and the two trunnions are to be pushed back so that their pointed
outer ends are flush with the edge of the cover. The latter is now placed in
position in the box, the screw f is inserted and is screwed home, when its lower
cone-shaped end will meet the correspondingly cone-shaped flattened ends of
the trunnions d. These trunnions are now pushed outward in opposite directions
and their pointed ends will enter the bore holes provided in the wall of the box,
thereby effecting the hinge connection between cover and box. For disengaging
the cover from the box again it is only necessary to remove screw f, when by
lifting the cover the trunnions will be pushed inwardly by the slanting trunnion
walls.
I have found it advantageous to use balls instead of the trunnions, as such
balls have a very easy in and out movement in engaging or disengaging the
hinge parts, and I have shown two ways of using such balls in the Figs. 3 & 4.
In the former figure the walls of the box a are spherically recessed as at m and
balls are provided in the transverse bore hole of the cover b, which when
the screw bolt f is screwed home are pressed outwardly and into the recesses m
in the box, thus effecting the hinge connection between the cover and the box.
In the modification shown in Fig. 4 the transverse bore hole through the cover
has been dispensed with and a ball has been placed into a spherical recess m¹,

page_text: engaging the respective recess m in the box, when the opposite ball, forming
the inner end of the screw is pressed into its recess m¹ by the screw o being
screwed home.
Having now described several ways of carrying out my invention I want it
to be particularly understood, that I do not limit myself to the exact shape or
position of the various parts as shown in the drawings, as these have to vary
according to circumstances.
Having now fully 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:-
--
(1) In a hinge connection the cover b, the partially threaded bore hole the
pointed screw f, the bore holes i, i, receiving the trunnions d, d having cone-
shaped flattened inner ends and pointed outer ends in combination with the bore-
holes provided in the wall of the box for receiving the pointed trunnion ends,
as described and shown by the Figs. 1 & 2.
(2) In a hinge the cover b, the partially threaded bore-hole in the cover, the
pointed screw engaging the said bore-hole and the transverse bore-hole n
receiving the balls d, in combination with the spherical recesses m, m provided
in the walls of the box a for receiving the balls, d substantially as described
and shown by the Fig. 3.
b
(3) In a hinge the part 6 having two spherical recesses m³, m³ for receiving
the balls ", di in combination with the part a having a spherical recess m
for receiving the one ball and a threaded bore-hole for receiving the screw o
attached to the other ball, as described and shown by the Fig. 4.
Dated this 25th day of March 1899.
FRANZ DICKMANN,
Agent for Applicant.