An Improved Portable Safety Bolt for Doors.
Year: 1893

page_text: Date of Application, 6th May, 1893-Accepted, 10th June, 1893
CODE LEIE DIECIFICATION.
An Improved Portable Safety Bolt for Doors.
I, TOUSSAINT LAFON, of 15b Boulevard St. Denis, Paris, in the Republic
of France, Merchant, 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 and accompanying drawing, that is to say :-
My invention relates to an improved portable safety bolt for bedroom and other
doors.
By its special method of construction the improved bolt is portable, and can
without any inconvenience be carried in the pocket. When it is required to use it,
it is only necessary to apply it to the frame of the door, where it is instantly fixed
without nails or screws by simply closing the door.
The accompanying drawing is in illustration of the improved bolt in different
positions.
Figure 1 shews the bolt folded together so that it can be carried in the pocket,
Figure 2 is a plan of the bolt in a position to be applied to the door frame.
Figure 3 is a front view of Figure 2.
Figure 4 is a front view of a somewhat modified arrangement of the safety bolt,
Figure 5 is a longitudinal section on the line x-x Figure 4.
Figure 6 is a transverse section on the line y-y in Figure 5.
The improved bolt consists of a plate a on which is arranged horizontally a
bolt & working in two guides c, formed upon or attached to the plate a (Figures 1, 2,
and 3).
.
The movement of the bolt b is effected by means of a small button or knob d
fixed upon it. At one end of the plate a is attached by means of a hinge a plate e,
on the inner side of which are fixed two points or spikes f, which serve to hold the
bolt upon the door frame. 9 is a wedge which can be screwed if required upon the
plate e, when the door to which the apparatus is applied has so much play that
the edge of it when closed will not press sufficiently upon the back of the plate e to
force the points into the wood. Where, however, the door fits sufficiently closely,
the wedge is not required, and it can be unscrewed from the plate e and screwed
upon the plate a as shewn in Figure 1.
In Figures 4, 5, and 6, the bolt 6 is shewn working in a tube h fixed upon the
plate a. This tube is provided with a slot i, having a notch k at right angles, by
which the bolt can be held back. A spring m in the bottom of the tube h con-
stantly forces the bolt 6 forward, in order to keep the latter in its closed position,
(Figure 5). To hold it open, it is only necessary to draw it back by the knob d
and turn the latter into the notch k, and the bolt is then held in its open position
(Figure 4).
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination of the plate a, the hinged piece e, and the points or
spikes, with the bolt b, substantially as described and illustrated, in Figures 1, 2,
and 3.
2. The combination of the plate a, the hinged piece e, and the points or spikes f,
with the bolt & sliding in the tube h, and the knob or handle d sliding in the
groove i having a notch at its end, substantially as described and illustrated in
Figures 4, 5, and 6.
3. The combination with the plate a, hinged piece e having points or spikes f, and
[Price 8d.1

page_text: carrying a bolt b, of the moveable wedge shaped piece 9 substantially as and for
the purpose described and illustrated.
4. The combination with the bolt and slotted tube h, of the spring m sub-
stantially as described and illustrated in Figure 5.
Dated this 6th day of May 1893.
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.