Improvements in Locks.
Year: 1898

page_text: Date of Application, 6th May, 1898-Accepted, 2nd July, 1898
Improvements in Locks.
I, THORSTEN ALBIN THEODOR RYDBERG, of Vesteras, Sweden, Engineer, 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 object of the invention is an improvement in that description of locks the
sliders of which are straight-guided and each consisting of a pin or bar or the like
severed crosswise into two parts lying end against end and one of them actuated
by a spring that pushes that part in the locking position. The present invention
consists therein that each slider consists of such a severed pin or bar (solid or
hollow) surrounded by one, two or more concentric tubes severed and spring-
actuated in the same manner as the pin, or it may be of only two or more con-
centric tubes made to slide in each other without the central pin. Those sliders
are brought into the position to unlock by pressure of the key against the parts
not directly acted upon by the spring pressure.
Such a set of tubular sliders may be arranged either so that the key is inserted
rectilineally in the longitudinal direction of the tubes, and acts by means of steps
in the end of the key, or so that the key, being provided with inclined faces at its
side or sides, is to be inserted at right angles to the longitudinal direction of the
tubes and acts on the sliders by pressure either on the insertion of the key or by
turning the latter.
One, two or more such sets of sliders may be used in the same lock.
On the accompanying drawing the invention is shewn applied to a padlock,
in Figures 1 to 3, and to a bolt-lock, in Figures 4 to 6. Figure 1 is a section of
the padlock and Figure 2 the underside of the same. Figure 3 shews one of the
legs of the bow. Figure 4 is a section, Figure a plan and Figure 6 an end view
of the bolt-lock.
In the padlock shewn, 1 is the body of the lock, 2 is the bow, the one leg 3 of
which is cylindrical and movable in a boring in the body of the lock. 4 and 5,
7 and 8 are the parts of two concentric tubes, 6 and 9 are the springs, 10 and 11
are the parts of a pin within the tubes, and 12 its spring, which in the example
shewn on the drawing abuts against a bottom provided in the surrounding tube 8.
When the key 13 is withdrawn the ends of the parts 4, 7 and 10 are pressed
against the bottoms of the borings in the leg 3, indicated by dotted lines
(Figure 1), and the bow 2 cannot be pushed outwards. When the key is inserted
and pushed inwards the sliders are brought into the opening position by the
inclined faces of the key, as shewn in Figure 1, and by continued pushing of the
key, the bow 2 is pushed outwards, so that the pin 14 in the other leg of the bow.
leaves its hole in the body of the lock, whereupon the how can be swung outwards
and the lock is opened. 15 is a pin in the leg 3 which at the swinging outwards
of the bow, slides on the face 16 and supports the bow. The handle of the key
limits the movement of the bow outwards. In certain cases it is necessary to
guide the tubes by means of a feather and groove as indicated at 16* in Figure 3.

page_text: In the example represented there are shown two sets of sliders but there can
also be only one set, or three or more sets if desired.
By the above description it is easy to understand how the sliders operate in the
lock shown in Figures 4 to 6 but in this case the key 17 acts on them with its end
and there is only one set of sliders.
The sliders are numbered as in Figure 1 and are fitted in a casing 18 provided
with slots and shoulders for the key. The casing 18 is moveable in a
casing 27
inserted in a door 26 or the like. The casing 18 is fixed to a disc 19 which is
provided with a pin 20 entering into a slot 23 in a plate 22 attached to the bolt 21
of the lock. When the key 17 has been inserted through the key hole and pushed
to the bottom or against the shoulders in the casing 18 the sliders have the position
shown and one can turn the key and operate the bolt 21 by the pin 20 and open
the door. 24 is a cylinder arranged in a boring in the bolt and actuated by a
spring 25. When the bolt 21 is thrown to open the lock, the cylinder 24 is thereby
brought axially in line with the sliders 4, 7 and 10, and under the action of its
spring 25 this cylinder 24 will push the said sliders back against the bottom of
the boring (indicated by dotted lines in Figure 4) in which they work, so that
the bolt 21 cannot be again thrown out to the position shown in the drawing
except by the insertion of the key 17, which acting upon the sliders 4, 7 and 10
will then push the cylinder 24 back into the bolt 21 and free the latter.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what T
claim is:-
1. A lock having one or more sliders composed of concentric tubes each of which
is in separate parts placed end to end and springs adapted to press upon the tubes
as and for the purpose set forth.
2. A lock having a slider or sliders composed of a spring-actuated tube in two
separate parts placed end to end and a central pin, also in two parts, and a spring
to actuate the pin substantially as described.
3. A lock having a slider or sliders composed of a series of concentric spring
actuated tubes in two parts placed end to end, a central pin also in two parts within
the central tube and a spring to actuate the pin, substantially as described.
Dated this 6th day of May 1898.
ABEL & IMRAY,
Agents for the Applicant.