IMPROVEMENTS IN COMBINATION OR LETTER Locks
Year: 1881

page_text: LETTERS PATENT to Edouard Allebos, of No. 15, Rue d'Allemagne, Brussels,
in the Kingdom of Belgium, for an Invention of "IMPROVEMENTS IN
COMBINATION OR LETTER Locks."
PROVISIONAL SPECIFICATION left by the said Edouard Allebos at the Office
of the Commissioners of Patents on the 7th February 1881.
EDOUARD ALLEBOS, of No. 15, Rue d'Allemagne, Brussels, in the Kingdom of
Belgium. "IMPROVEMENTS IN COMBINATION OR LETTER LOCKS."
This Invention has for its object improvements in combination or letter locks.
The improvements are illustrated by the Drawings annexed.
Figure 1 is a front view, and Figures 2 and 3 show parts which are behind.
a is a central button or handle, its stem engages with a small drum furnished
with two projecting pegs j" and j
b, 61, 6, 6, are alphabetical ratchet buttons.
c, a slider actuated by the stem of the button or handle a, and engaging with
the buttons b, b', b", b¹¹³
d, a stump in connection with an ordinary lock, which may or may not be used.
e, screws supporting the double clicks f, f'.
ff, the double vertical clicks.
y, g¹, g, g, spring washers receiving the pivots of the buttons b, b', b, b₁₁
h, h', h, h, fingers in connection with the ratchet buttons, b, b', bu, bui
jj, axes against which the springs of the fingers h, h', h", h, rest.
,, pins projecting from the drum of the central button or handle.
,,horizontal and vertical bolts moved by the pins of the central
drum.
1, foundation plate.
The door also carries four auxiliary buttons, two of which serve to fasten aud
unfacton 3 small slide in the contro of the dann masking the comniata look, and

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edouard Allebos in the Great Seal Patent Office on the 5th August
1881.
EDOUARD ALLEBOS, of No. 15, Rue d'Allemagne, Brussels, in the Kingdom of
Belgium. "IMPROVEMENTS IN COMBINATION OR LETTER LOCKS."
This Invention has for its object improvements in combination or letter locks.
The improvements are illustrated by the Drawings annexed.
Figure 1 is a front view, and Figures 2 and 3 show parts which are behind:
A is a central button or handle; its stem engages with or carries a small drum
furnished with two projecting pegs J2 and J³.
B, B1, B2, B3, are alphabetical ratchet buttons.
These and parts in connection with them are shown in detail by the Figures 4.
C, a slider actuated by a key or cam like projection on the stem of the button or
handle A, and engaging with the buttons B, B1, B², B³.
E, studs supporting the double clicks F, F¹.
F, F, the double vertical clicks.
G, G1, G2, G3, springs carrying pins locking the parts of the ratchet buttons
B, B1, B2, B3, together.
H, H, H², H³, fingers in connection with the ratchet buttons B, B1, B2, B³.
J, J', stops against which the springs of the fingers H, H, H2, H³, rest.
J2, J, pins projecting from the drum of the central button or handle.
K, K1, K2, K³, horizontal and vertical bolts moved by the pins of the central
drum.
L, foundation plate.
The action of this apparatus is as follows:-When the slider C is in the position,
shown in Figure 2, the wedge like projections C', C', of the slider C are opposite
notches in the alphabetical ratchet buttons, and the fingers H, H¹, H³, and H³, also
are not supporting the slider, so that the slider is free to descend. On turning
this button the slider is pushed down, and the same movement of the button A
withdraws the bolts K, K, K³, and K³, by the operation of the pins J and J³.
When the slider C is in its lowest position the wedge like projections C¹ by
entering beneath the springs G, G1, G2, and G³, force them back and withdraw the
locking pins which they carry, and the buttons B, B1, B2, and B³, can then be
set to another secret word.
Except the buttons B, B1, B2, B3, be turned to the letters of the secret word,
not only do the notches not correspond with the projections C¹, C, but the fingers
H, H1, H2, H³, are caused by the buttons B, B1, B2, B3, to assume the positions
indicated by the dotted lines and then the slider C is supported by the fingers and
cannot descend.
Thus it will be seen that according to my improvements in letter or figure
combination locks for safes,-
1. The ordinary main lock actuating the locking and unlocking bolt is dispensed
with.
2. The stem of the central button is furnished with a drum armed with two pins
engaging with notches in two horizontal bolts, and commands likewise two vertical
bolts.
Originally I employed the central button A only to raise and lower the slider C
upon the buttons B, B1, B2, B3, set to the word agreed on, and the bolt for opening
and closing the door was moved by means of a key engaging into any description
of lock. This arrangement offered many inconveniences in practice, so that the
inventor has done away entirely with the ordinary main lock.

page_text: The button A serves as a key, and is furnished independently of its central stem
which operates the secret lock with a drum armed with two pins J, J³, engaging
in the notches of two horizontal bolts K, K¹, also controlling two other vertical
bolts K2, K. The four bolts arranged at right angles, as is indicated by the
annexed Drawing, work upon a plate or bed L and operate simultaneously with a
single movement of the button A. This plate L is mounted upon the secret com-
bination letter lock, so that the button A commands the posterior mechanism by
its central stem and works by its two pins the four bolts for opening and closing
the door of the safe.
Finally, I claim,-
The suppression of the main ordinary lock in the system of letter combination
safety closings for safes, and
Replacing this lock by a set of bolts having notches and set in motion by pins in
a druin upon a central button which takes the place of a key, and also acts by
its stem on a slider in connection with the buttons of a letter combination.
Placing upon the door of a safe four auxillary buttons intended some to clamp
and to free the central button of the action; others to open and close the frame
masking the lock.
In witness whereof, I, the said Edouard Allebos, have hereunto set my hand
and seal, this First day of August, in the year of our Lord One thousand
eight hundred and eighty one.
E. ALLEBOS. (L.S.)