Lock and Key. Page: 3 of 4
[1], 3 p. : ill. ; 23 cm.View a full description of this patent.
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1,382,826
the core turning a quarter of a rotation the
tumblers 16 engage in the slot 18 and arrest
the rotation of the core within the cylinder.
By moving the lever to the raised position
5 as shown. in Fig. 2, the rod 25 is partially
withdrawn and thereby raises the bar 28
above the key. The contours of the face of
the bar are adapted to maintain the tumblers
16 in such a position as to bring the divi-
10 sions in the tumblers at the division between
the cylinder and the barrel, this permitting
the cylinder to be rotated within the barrel.
An annular plate 31 having countersunk
lugs 32 upon its outer surface, is secured to
1 5 the inner end of the cylinder by means of
screws 33, this being rotated by the cylinder.
The lugs contact arms 34 extending laterally
from a latch bolt- 35 slidably maintained
transversely of the barrel 10 at the inner
20 end of the latter by means of loops 36 and
37 mounted upon the said barrel, a spring
member 38 acting to maintain the latch bolt
in the locked position and to return the said
bolt to the locked position upon the with-
25 drawal of the key from the lock. Thus the
lock is maintained in a locked position at
all times when the key is removed, being
unlocked only when the key is inserted and
the lock held in an unlocked position.
34 As shown in Fig. 5 the latch bolt retains
the cylinder within the barrel against longi-
tudinal displacement.
It is obvious that the device can be made
in various sizes and degrees of strength
35 without departing from the spirit of the in-
vention, thus adapting the same to a wide
range of uses.
Particular attention is called to the fact
that the inner elements of the tumblers 16,
40 have their inner ends beveled, at 39, and
these beveled ends are inclined upwardly in
the direction of rotation of the core 17, in
the unlocking movement, when turned to the
left, as shown in Fig. 3. Such inner ele-
45 ments are prevented from turning upon
their longitudinal axes, by pins 39' secured.
thereto, operating in radial slots 40', in the
core 14, Fig. 2. It is thus seen that these
beveled ends 39, serve as ratchets, and when
50 the core 17 is turned to the left sufficiently,
so that the beveled ends 39 enter the slot
18, the core 17 will be locked to the cylinder
14, for turning movement, to the left. When
the core 17 is turned to the right, the bev-
55 eled ends 19 will trip over the side wall
of the slot 18, and permit the core 17 to
rotate with relation to the cylinder 14, the
cylinder at the same time being locked
against turning movement, these two opera-
60 tions occurring when the inner and outer
elements of the tumblers 16 are brought into
registration. The core 17 is turned to the
right until the inner and outer elements of
the tumblers 17 are brought into registra-
65 tion, at which time the key may be removed.By lowering the bar 28 by means of the
lever 26, the key may be easily withdrawn
from the lock and the latter left locked.
What I claim, is:
1. In a device of the character described, 70
in-combination with a key, a lock compris-
ing a barrel member, a cylinder rotatable
within the barrel member, transversely di-
vided spring pressed tumblers beveled at
their inner ends projecting inwardly from 75
the wall of the barrel member and movably
engaging in the wall of the cylinder, a core
rotatably mounted within the cylinder, a
slot extending longitudinally of the core and
opening along one side of the latter, trans- so
versely divided spring pressed tumblers pro-
jecting inwardly from the wall of the cv
inder and movably engaging in the core, a
spring pressed latch bolt slidably mounted
transversely of the barrel member at the in- 85
ner end of the latter, an annular plate se-
cured transversely of the cylinder at its in-
ner end, and lugs on the plate for operating
the latch bolt.
2. In a device of the character described, 90
in combination with a lock, a- key adapted
for operating the lock comprising a handle
having a recess opening from its outer edge,
a lever pivoted within the recess' and pro-
truding therefrom, a slidable shield secured 95
transversely of the lever and slidably cover
ing the opening of the recess, a shank hav-
ing a groove extending longitudinally along
its outer portion and a serrated face extend-
ing longitudinally along its inner portion, a 100
rod resting longitudinally along the bottom
of the groove and extending longitudinally
through the shank and pivoting to the le-
ver, a serrated bar resting within the groove
and links pivotally connecting the bar with 105
the rod.
3. In a device of the character described,
a rotatable barrel having a set of tumbler
openings formed therein, a cylinder rotata-
ble within the barrel and having a set of 110
tumbler openings to coact with the first
named set and. also having a second set of
tumbler openings, tumblers mounted within
the set of openings in the barrel and the
first named set of openings in the cylinder, 115
a core rotatable within the cylinder and
having a longitudinal slot adapted to re-
ceive the inner ends of said tumblers, said
core having a set of tumbler openings for
coacting with the second named set of the 120
cylinder, said core having a longitudinal key
receiving opening, tumblers adapted for op-
eration within the set of openings in. the
core and the second set of openings in the
cylinder, a key for insertion within the lon- 125
gitudinal opening of the core and having a
set of bits for coaction with the tumblers in
the openings of the core and also having a
longitudinal recess, a rod extending longi-
tudinally within the recess and having a set 1302
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Dove, Bascom A. Lock and Key., patent, June 28, 1921; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1256642/m1/3/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.