Lock Page: 3 of 3
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693,719
fastened at K K. These dogs and their cor-
responding teeth on the ratchet-wheels are so
shaped that when the wheel is on the axle in
the position as shown in Fig. 2 the knob B
5 can be turned only to the right, while if it is
reversed and placed on the axle as shown in
Fig. 3 the said knob may be turned in either
direction-that is, either to the right or to
the left.
1o Figs. 1, 2, 3, and 4 show the application of
the principles of this lock to a lock for post-
office boxes and other similar locks. L rep-
resents the bolt, pivoted at M. The tumblers
C C C work directly against the main bolt.
15 When the bolt is in position as shown in Fig.
4, the door is locked, the end of the bolt be-
ing behind the projection N on the frame of
the door Q. When the tumblers C C C are
all turned flat side up, the bolt L will fall
2o down to the opening 0, (see Fig. 3,) and thus
allow the door to open. The door may be
opened from the inside without lining up the
tumblers by lifting the end of the bolt L up
to the opening provided for the purpose, and
25 the door may be closed in like manner by lift-
ing the bolt through the opening before re-
ferred to. This last operation is facilitated
by giving a slight slope to the projection N
from the outside. The projection N is also
30 sloped slightly from the inside to minimize
the chances of changing the combination ac-
cidentally while closing the door.
Fig. 5 represents the principles applied to
a padlock. The tumblers C C C C operate
35 against the bolt R, which is pivoted in the
center, as shown. The spring T throws the
neck S open as soon as the tumblers C C C C
are lined up, and the spring U throws the
bolt back, disengaging the bolt from the neck,
40 substantially as shown.
Fig. 7 shows the application of the princi-
ples to a street-letter-box lock and other locks
of similar construction. The tumblers C C C
operate directly against the bolt V, substan-
45 :tially as shown.
Figs. 1, 2, and 4 show the operation of the
spring W, fastened to the back of the door Q
in such manner as to operate against the jamb
of the door and throw it open as soon as un-
5o locked and to keep it open until the combina-
tion is thrown.
The operation of the lock is substantially
the same as described in my former patent,
N5To. 678,956, the notches in the ratchet-wheels
55 taking the place of the depressions and the
dog the place of the pointed spring.
Having thus described my invention, Iclaim as new and desire to secure by Letters
Patent-
1. In a lock of the character described, the 6o
combination, with a pivoted bolt, of a circular
tumbler having a portion of one face cut away
or flattened, the edge being left circular, a
concavo-convex spring applied to such tum-
bler, a tumbler-spindle having a knob, and 65
means for locking the tumbler, substantially
as shown and described.
2. In a lock of the character described, a
tumbler, which is circular in form, having a
portion of one face cut away, the edge being 70
left intact, as shown and described.
3. In a lock of the character described, a
ratchet-wheel having a smooth place for the
beginning of the combination, a dog to oper-
ate against such ratchet-wheel and a spring 75
to hold such dog in position ; the teeth on such
ratchet-wheel and the dog being so shaped as
to enable the said wheel to be turned either
to the right or to the left; and means of fas-
tening such ratchet-wheel onto the axle car- 8o
rying the tumbler; the purpose of such
ratchet-wheel, dog, &c., being to communi-
cate the combination either by hearing or by
touch, substantially as set forth.
4. In a lock of the character described, the 85
combination, with the casing, and pivoted
bolt, of a tumbler, which is circular and has
a portion of one face cut away, a concavo-
convex spring bearing upon the tumbler, a
spindle whereon the tumbler and spring are 90
mounted rotatably, a ratchet-wheel fixed on
the spindle and having a portion of its pe-
riphery smooth, and a pivoted dog which en-
gages such wheel, all arranged and operating
as shown and described. 95
5. In a lock of the character described, the
combination, with casing, pivoted bolt-spin-
dle, a circular tumbler cut away on one face,
a spring acting on the tumbler and a ratchet-
wheel fixed on the spindle and having one roo
side flattened, of a pivoted spring-pushed
dog having a V-shaped head adapted to en-
gage the ratchet and thus permit the latter to
be rotated in either direction, whereby the
combination is communicated either by touch io
or hearing, as specified.
In testimony whereof I have signed my
name to this specification in the presence of
two subscribing witnesses.
OSCAR KATZENBERGER.
Witnesses:
ALEX. KUHN,
N. C. MORRISON.
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Reference the current page of this Patent.
Johnson, William W. Lock, patent, February 18, 1902; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth508937/m1/3/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.