Year: 1899

page_text: Date of Application, 8th Feb., 1899-Accepted, 11th Mar., 1899
We, HERMANN HEINRICH WILHELM OLOFF, Mechanician, and ANDREAS KLAUS
HEINRICH BRUGGMANN, Tailor, both of No. 1A, Margarethenstrasse, Lubeck, in
the German Empire, 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:-
It
This invention relates to a gate or bairier for railway and other purposes which
can be quickly closed or opened and occupies very little space when open.
consists of articulated levers locked, operated, and guided in a particular manner
and by special means.
In order that this invention may be the better understood, we now proceed to
describe the same, reference being had to the accompanying drawings and to
the letters and figures marked thereon.
Figure 1 is a part sectional and part plain side elevation of our gate.
Figure 2 is a plan of one gate oi banier when in the locked position.
Figure 3 is a side view of the same when open.
An axle rests in a support a. Articulated levers are connected to the
axle by means of levers pivotting on the axle b. The levers d conveniently
bent at one end are pivotted to levers e which are pivotted to discs f situated
on an axle y The latter is pivotted in the support a, and can be rotated by a
lever attached to it The opposite ends of the system of levers are pivotted to
a guiding piece which moves on the ground by means of a roller k and consists
of two flat side plates, each having a slot in which is guided the central pivot
of the next pair of levers . If the way to be closed is very wide a pair of gates
is used as shown in Figure 1 of the drawings. In this case a chain or similar
wheel m is provided on the axle g, in order to transmit the motion imparted to
one half of the barrier to the other half by means of a rope or other device.
The operation of the barrier is as follows:-
―:
When the gate is closed and is to be opened, the lever his turned in the
direction of the arrow to the extent of a quarter revolution In this manner the
axle g and the discs f are rotated and the levers ed brought into action almost
instantaneously on account of the advantageous knee-lever arrangement. The
axle g may carry another disc, which is connected with a signalling device.
The favourable operation of the arrangement is assisted by the guiding pieces i
which prevent the system from bending sideways.
To limit the movement, the pivots of the levers may be connected by chains;
and in order to prevent the unauthorised operation of the barrier through the
lever h, the latter may be locked in position by a suitable device.
By this invention the operation of such gates and barriers is almost instan-
taneous. In consequence the liability to accidents is greatly reduced. Further
the avoidance of heavy counter-weights which require winding up reduces the
amount of force required and thus also facilitates operation and increases safety.

page_text: Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1st. Gates or barriers for railway and like purposes, consisting of articulated
levers the ends of which at one end are connected by means of levers to discs, in
order to obtain by the rotation of the latter through a short space the opening
or closing of the gate or barrier, substantially as described.
2nd A central or end piece for gates or barriers as claimed in Claim 1, having
slots for guiding one of the middle pivots of the system of levers during the
opening and closing of the gate, substantially as described and illustrated in
the accompanying drawings.
Dated this 8th day of February 1899
FELL & JAMES,
Agents for the Applicants