Year: 1886

page_text: I, ALFRED KONSTANTIN BERGMANN civil engineer of, Gorok-hovaya A 17,
St. Petersburg, Russia do hereby declare the nature of my 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 has for its object a new system of safety device for locks generally
and it consists in an arrangement of combination plates to be hereinafter described.
This arrangement of combination plates is capable of being applied to various
kinds of locks and in order that the gist of my invention may be well understood,
I shall describe the combination plates as applied to an ordinary padlock, also to
a lock bolt, and also to an ordinary door lock.
Fig. 1 to 5 inclusive sheet 1 represent a padlock embodying my invention.
Fig. 1, 2 and 3 are front elevations of the lock uncovered to show the inside
thereof.
:
Fig. 4 is a top view of fig. 2 in section through AA and fig. 5 is a vertical
section through B B fig. 3.
a is the box of a padlock and b is the hook having at its lower end a stop c by
which the extent of its upward motion is limited. d are the combination plates,
six in number, fitted to slide freely up and down in the box a, and each having
a slot e.
The hook b is also slotted at f. 9 is the key for opening the padlock; the same
is inserted under and into the padlock, and the combination plates which are in the
position shown in fig. 1 in which the padlock is locked, are thereby raised succes-
sively until they occupy the position shown in fig. 2, 3 and 5. When in this
latter position, the slots e of all the plates are in a line and allow of a cross piece h;
which is operated by hand from the outside by pushing the washers i, i from
right to left fig. 2, to leave the slot f of the hook b and enter the notches 6.
The hook 6 is thereupon free to move up and the lock can be opened, see fig. 3.
*

page_text: w Den it 18 desired to close the lock, the HOOK 0 15 8110
position, the cross piece h is shifted from left to right and after removing the key g,
the combination plates d fall back to the position shown in fig. 1 and the padlock
is again closed.
In fig. 6 to 11 inclusive sheet 2 represent my invention embodied in an ordinary
lock working together with a bolt.
Fig. 6 is a diagram of an ordinary door in front elevation, to which my system
of lock is applied, the bolt closing the door.
Fig. 7 is a top view thereof, the door being open.
Fig. 8 is a front elevation of the lock uncovered to show its inside, the combina-
tion plates being in the required position to allow of the bolt being displaced.
Fig. 9 is a top view in section through C C.
Fig. 10 is a vertical section through the broken line D D and
Fig. 11 is a front view of the lock similar to fig. 8, except that the combination
plates are in the required position to prevent the bolt from being displaced when
once the door has been closed.
a is the box
In this arrangement i is the lock and k the bolt, fig. 6 and 7.
which is closed up by a cover held by screws m fig. 9. d are the combination
plates capable to slide freely up and down in the box a by means of the key g.
The screws m enter screw threaded holes made in two cross pieces n n, fast on the
box. The key g raises the combination plates successively to the position shown
in fig. 8 & 10, the slots e of the said plates are then in a line and the bolt k
can be shifted into the lock, see Fig. 7 and the door can be opened. In order to
lock the door, the bolt k is drawn from left to right into the position shown in
fig. 6: the key is then turned half a turn either one way or the other, the
combination plates d drop down into the position shown in fig. 11 and they bear
on the cross pieces n, n.
Fig. 12 & 13 sheet 3 are diagrams showing my invention embodied in an ordinary
door lock.
Both figures are front elevations of the same lock in its two positions.
a is the box, d the combination plates which are guided by a cross piece n fast
on the box a. o is the bolt which, when the combination plates & occupy the
position shown in fig. 12, can be caused to move towards the left by means of an
outer bandle secured in a square hole p formed in an axis q upon which is fastened
an eccentric r. The motion of the excentric r, when the handle is being turned,
'causes the bolt to move one way or the other: the bolt is slotted as shown in dotted
lines. When it is desired to open the lock, i.e. to bring the parts from the
position shown in fig. 13 to the position shown in fig. 12, a key, which fits the
combination of the plates d, is introduced into the key hole a for raising the plates
as in fig. 12, and then, by means of the outer handle on the axis q, the bolt is
moved.
8
In the last described arrangement, two operations are required to open or to
close the lock, one for moving the combination plates and one for moving the bolt.
It is however possible to perform both operations simultaneously, as shown in the
arrangement of lock at figures 14 & 15, sheet 3.
a is the box, d the combination plates having alots e. The bolt o is under the
When it is
combination plates and is guided by two pins t fast in the box a.
desired to open the lock, a combination key is introduced into the key hole 8 and
is turned from left to right: the combination plates are moved upwards until their
slots are in a line, and the protruding portion o¹ of the lock enters the said slots.
When it is desired to close the lock, the key is turned from right to left and the
reverse operation takes place.
It is to be understood that the above described various arrangements of locks
have merely been shown as example, because the hereindescribed invention is
capable of being carried into practice in a great number of ways, without departing

page_text: from its feature, which is the combination plates. It is also to be understood
that the combination plates can be grooped in any suitable number and also that
the combination may be altered at pleasure in each particular case, by changing
the relative position of the plates of course changing the key each time.
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
The application of a series of combination plates d, to locks of all descriptions, as
hereinbefore described and illustrated in the annexed drawings.