Improvement in Permutation Locks. Page: 4 of 6
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WILLIAM N. HALL, OF SPRINGFIELD, TEXAS.
Letters Patent Xo. 107,775, dated September 27, 1870.
IMPROVEMENT IN PERMUTATION-LOCKS.
The Schedule referred to in these Letters Patent and making part of the same.T2 all whom it nay concern;~
Be it known that I, WILLrAM N. EAL L, of Spring-
field, in the county of Limestone and State of Texas,.
have invented certain new and useful Improvements
in COombination and' Permutation-Locks;. and I do
hereby declare that the following is a full, clear, and
exact description thereof, which will enable those
skilled in the art to make and 'use the same, refdr-
ence being had to the accompanying drawing of the
same, which makes part of this specification, and in
which-
Figuae 1 represents an elevation of a portion of a,
door, showing the application thereto of a look em-
bracing my improvements, and the end of the spindle
by which the bolts are actuated;
Figure 2 represents a horizontal section through a
portion of a door, showing the lock, and the spindle
for actuating the bolts, in elevation ;
Figure 3 represents a vertical section through the
lock, the looking bolt being in the position it occupies
when the door-bolt is thrown and locked;
Figure 4 represents a similar section, showing the
locking bolt partially withdrawn and the door-bolt un-
locked;
.Figure 5 represents a horizontal section of the lock,
showing the locking bolt withdrawn ;
Figure 6 represents a side elevation of the locking
bolt;
. Figure 7 represents a side view of the stationary
blotted stem, separated from the operating parts;
Figure 8 represents aft elevation of the inner
notched sleeve andl its combination and permutation-
cap ;
Figure 9 represents an elevation of the nest of the
notched sleeves, detached from their stem or spindly;
Figure 10 represents a section of the combination
and permutation-rings put together; and
Figure 11 represents a view of the handle or wrench
by which the spindle is rotated to tlhroiv or withdraw
the bolts.
In the accompanying drawing-
A designates a portion of the door of a safe or vault,
to show the application of my improved lock and bolt
or bolts thereto.
The lock consists of a stem, B, secured within a
horizontal opening made in the door, and is of a length
sufficient'to project beyond the inner anl outer sides
thereof.
It is clamped by means of caps C and D, screwed
upon its ends-the outer one, C, against the combina-
tion and permutation-rings, and the 'inner one, D,
against a lock-nut, E, the purpose of which will be
hereafter described.
This stem B is provided with a'longitudinal groove
or'slot, F, open at its front end and closedtat its innerend, to limit, the inward movement of the stem-bolt,
and is of a.depth equal to about two-thirds its diam-
eter, for the purpose of receiving a bolt, G, equal in
width, length, and the greatest depth of the slot.
The steit B is also provided with a transverse slot,
H,' which intersects the longitudinal slot F near its
inner end, through which the door-bolt I passes, in
orderthat it may be locked to the stem by the bolt
G- whenever a notch or slot, J, in the door-bolt I is
brought In the line of the slot F and said bolt G, as
will.be more fully described hereafter.
The outer portion of this stem B is of a greater di-
ameter than its inner part, and receives a series of in-
closing notched sleeves, which, in the example repre-
sented, consists of four cylindrical changeable sleeves,
a, b, o, and d, which fit, .the one within the other, in
the manner of a telescope, so that their inner ends
will extend the one beyond the other, and leave an-
nular spaces or grooves, e, between each contiguous
end, except the inner one; which fits against a shoul-
der, i, on the stem B; while thel- front ends will pro-
ject step-like in front of each- other, the inner one
having the greatest projection.
The annular spaces or grooves e are formed by
means of annular shoulders, 2, on 'the interior and
near the inner end of each sleeve, against which each
sleeve abuts, except the inner one, and an annular
rim, 3, on each end of the series of sleeves, as shown
in figs. 3, 4, 5, 8, and 9, of the drawing.
The inner portion of the stem B is diminished in
diameter, for the two-fold purpose of forming a shoul-
de, i, thereon, against which the inner annular rim 3
of the inner sleeve d fits, and to receive a screw-nut,
K, by which to lock the series of sleeves against the
shoulder i of the stem B, so as to prevent them from.
having any longitudinal movement, and thereby main-
tain their connection with the combination and per-
mutation-rings.
The outer ends of the series of sleeves are notched,
so as to form alternate projections or teeth, 4; and
spaces, 5, of equal width and shape; and the combin-
ation and permutation-rings 1, sm, a, and o, are each
provided with alternate projections or teeth, 6, and
spaces, 7, which interlock with those of the series of
sleeves. In order, therefore, that the combination-
rings may match with their respective notched sleeves
they are made so as to fit one within and upon the
other, so that the projections or teeth of each will in-
terlock with those of equal diameter, for the purpose
of communicating the exact degree of movement of
each combination and permutation-ring to its respect-
ive interlockifig sleeve.
The combination and permutation-rings 1, sm, n, and
o, occupy positions outside of and against the door,
and as they are of unequal diameters, their projecting
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Hall, William. Improvement in Permutation Locks., patent, September 27, 1870; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth165253/m1/4/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.