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Патент USA US3027753

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April 3, 1962
B. J. MONAHAN
3,027,743
COMBINATION LOCK
Filed Dec. 5, 1959
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United States Patent 0 "ice
1
3,027,743
Patented Apr. 3, 1962
2
FIGURE 1 is a sketch of the top of four ?ngers of a.
3,027,743
right hand;
COMBINATION LOCK
Brian I. Monahan, Rte. 2, Box C12, Mundelein, Ill.
Filed Dec. 3, 1959, Ser. No. 857,123
3 Claims. (Cl. 70-129)
This invention relates to a combination lock, and more
FIGURE 2 is a sketch of the top of the second knuckles
of the same right hand;
FIGURE 3 is a front elevation of the lock mounted
in a cabinet door with the escutcheon plate removed;
FIGURE 4 is a vertical section taken on the line 4—4
particularly to a lock that may be opened by using a plu
of FIGURE 3 with the escutcheon plate added; and,
rality of components of the body which have ?xed rela
FIGURES 5 and 6 are bottom views partly in eleva
tive lengths with respect to each other.
10 tion and partly in horizontal section on the line 5~—5 of
The general object of the invention is to provide a
FIGURE 4, FIGURE 5 showing the bolt locked, and
lock that does not require a key or the actuation of any
FIGURE 6 showing the bolt unlocked.
series of detents by means of a dial, but rather is respon
Continuing to refer to the drawings, and particularly
sive to something on the human body which is peculiar
to FIGURES 3 and 4, 32 is a casting which constitutes
to the owner of the lock so that only the owner of the 15 the base of the look. It contains a channel 34 in the
lock can readily open it. There are many chests and
drawers about a house which contain things not of great
value, but which one would like to keep inaccessible to,
for example, children, and this without the use of a key.
Keys for desks, strong boxes, luggage, etc. are easily mis
placed with the result that the devices are not locked.
The feature of this invention is the provision of a com
upper part of which slides a bolt 36. The numeral 38
identi?es a portion of the cabinet door, and 40 the por
tion of the cabinet, the line v4-2 de?ning the vertical jamb.
The cabinet door 38 has a recess 44 which will exactly
20 receive the lock 32, slipped in edgewise of the door, as
indicated in FIGURES 3 and 4, so as to bring the bolt
36 into alignment with a respectacle recess 46 mounted in
the door jamb. Mounted on the bottom of the bolt 36 is
the four ?ngers of a hand, or better the second knuckles
a rack 48 in engagement with a pinion 50‘ carried on the
of four ?ngers of a hand, which when pressed against four 25 shaft 52 which protrudes outwardly of the ‘base as shown
levers or plungers will advance those levers or plungers
in FIGURE 4. By rotating the shaft 52, the bolt 36 may
bination lock which can be opened only by the tips of
by the respective lengths of the ?ngers. It is the combi
nation of the four ?ngers that will align plungers in the
lock so as to permit the lock to be opened.
be moved into or out of the recess 46.
The bolt has four horizontal taps 54, 56, 58 and 60,
in each of which is positioned an expansion spring 62
Referring to FIGURE 1, applicant shows a plan view 30 and equal length pins 64. In the forward portion 66 of
sketch of the four ?ngers of a right hand, and referring to
FIGURE 2, applicant shows a plan view of the four sec
the base 32 are four through holes 68, 70, 72 and 74,
and in each of these are equal length pins 76. By turn~
ond knuckles of the same hand. Using the line 10 as
ing the shaft 52, see FIGURE 4, the tap holes 54, 56, 58
a base against which rests the middle finger 12, the dis
and 60 may be brought into alignment with the through
tances 14, 16 and 18 for a given adult person’s hand is 35 openings 68, 70, 72 and 74.
always the same. Moreover, there is a wide range be
The base 32 has a forwardly extending portion '78
tween the relationships of these three dimensions 14, 16
which is slotted at 80, 82, 84 and 86 to receive respective
and 18 with respect to the middle ?nger.
With some
ly lever arms 88, 90, 92 and 94, which are pivoted on a
pin 96 which is passed through a drilled hole 98 and
40
the middle ?nger. Others have comparatively long index
fastened by threads ‘at 100. At the outer end of each
?ngers 22. In a family, or even amongst a much larger
lever are knuckle pads 102, 116, 118 and 120. Formed
people, the ring ?nger 20 is almost as long as
group of people whom one may frequently contact, the
likelihood of the length of the ?ngers on one hand all
integrally with each lever is a ?ange 104 having a thread
ed opening therethrough in which is mounted an adjust
bearing the same relationship to the middle ?nger is
ment screw 106. The work end of the screws .106 en
quite small. It follows that a lock which is keyed to the 45 gage the end of the pins 76.
length of the index, ring and little ?ngers with respect to
An escutcheon plate 108 is slipped over the levers, and
the middle ?nger of a particular person will probably not
a knob 110 is mounted on the shaft 52. The maximum
be able to be opened by one that he comes in frequent
inward stroke of a lever is determined by engaging the
contact with, as for example, in his home or his o?ice, 50 escutcheon plate 108 at 112.
or if the lock is on luggage, with someone who happens
to come into contact with him.
Keying this lock to a hand proceeds as follows.
The
closed second knuckles, indicated by the numeral 114 in
FIGURE 6, are moved toward the four knuckle pads
102, 116, 118 and 120. This is done with a bolt in the
which are shown in FIGURE 2. In the lock hereinafter 55 unlocked position shown in FIGURE 6. The middle
disclosed, the combination is based upon the second
?nger is the longest and the length of the pin 70 is such
knuckles for the reason that these knuckles are ?rmer,
that when the adjustment screw 107 is fully retracted and
the bones being close to the surface, and in this respect
the lever 90 is fully depressed against the escutcheon
differ from the tips of the ?ngers which are like pads and
plate at 112, the end 124 of the pin will be along the
can be unevenly pressed so that the combination would 60 dividing line between the bolt 36 and the channel wall
not work as positively. Also, as will appear, the actual
of the ‘base 32, as shown in FIGURE 6. Ordinarily, in
distances from the knuckle to a base line 24, i.e., 26, 28
setting the levers, it will not be possible to press pads
and 30, is less than the corresponding distances shown in
102, 118 or 120 fully down because their screws 106
FIGURE 1, and the lever or plungers of the lock that
must be adjusted so that the relationship of the pads in
What has been said about the respective length of
?ngers is equally true with respect to the second knuckles,
are actuated need be moved less far.
A speci?c object of this invention is to provide a lock
in which the responsive controls may be adjusted by the
purchaser so as to respond to the ?ngers or knuckles of
one of his hands. The adjustment must ‘be made by each
65 FIGURE 6 is the same as the relationship of the knuckles.
The screws 106, 107, etc., must be turned until this rela
tionship is attained. When the user has the four pads
so related to each other that he can simply move has
closed second knuckles against all of them from a posi
70 tion in front of the lock and engage simultaneously all
Applicant’s invention is illustrated by the combination
four pads, the lock is keyed.
lock shown in the accompanying drawings, wherein:
Thereupon, the user turns the knob 110 of FIGURE 4,
user for himself.
3,027,743
'
3
throwing the bolt into the locked position of FIGURE 5.
When the pins 64 are in alignment with the pins 76, the
springs 62. force the pins 64, etc. outwardly, and the bolt
is locked as shown in FIGURE 5.
This action forces
the levers 88-94 outwardly until their pads lie in. a 5
4
engageable with and movable toward and away from the
free end of the second pin to vary the stroke of the lever.
2. The combination of claim 1 wherein the means urg
ing each ?rst pin toward the channel is a helical spring.
3. A combination lock comprising ‘a base, a surface on
the base lying in a plane, a bolt having a shear surface ly
ing in a plane movable across the plane surface of the
base, a plurality of spaced tap holes normal to and open
The speci?c design of the lock could be varied in many
ing into said plane surface of the bolt, a like plurality of
ways in order to attain applicant’s basic objective. Ap
similarly spaced holes normal to and opening into said
plicant uses lever arms, whereas an arrangement of
plane surface of the base, said holes being through the
straight horizontally movable plungers could be worked
base, a slideable pin in each bolt hole, means urging each
out. Applicant’s invention is directed toward providing
pin toward the plane surface of the bolt, a second pin in
a means on the outside of the lock which can be related
each hole in the base, actuating means having one end
to the ends of the‘ ?ngers or second knuckles so that by
moving them toward the lock simultaneously, they act 15 engageable with the outer end of ‘each pin in the base
and the other end outside of the lock, said actuating
as a combination which will open the lock.
means ‘being movable along parallel lines and the outside
It will be appreciated that the knuckle pads can be
ends being in normal position spaced side by side, and a
varied so that the word “pad” in the claims includes any
straight transverse line, the levers being restrained by the
openings in the escutcheon plate 108.
threaded screw mounted near each outside end of the ac
?rm surface on the drive end of the actuating lever train,
94, 106 and 76. The pads could be mounted on straight 20 tuating means and having one end engageable with each
associated pin for setting the abutting surfaces of each
line drive means in alignment with the pins with an ad
pair of pins in the shear surface, whereby the knuckles or
justing means between the pad and the actuating lever
?ngers of a hand may depress the actuating means by dis
train.
tances proportional to the respective lengths of their ends
Having thus described his invention, applicant claims:
1. A combination lock comprising a base, a channel in 25 from the hand so that all locking means simultaneously
will release the bolt from the base.
the base, a bolt slideable in said channel, a plurality of
holes through one wall of the channel, a like plurality of
holes in the bolt and alignable respectively‘ with the
References Cited in the ?le of this patent
holes through the channel wall, a pin slideable in each
UNITED STATES PATENTS
pair of aligned holes and fully seatable in its bolt hole, 30
means urging each pin toward the channel, a second pin
487,138
Vanwart ____________ __ Nov. 29, 1892
mounted in each hole of the channel wall and projecting
outwardly of the lock, a lever mounted externally of the
base and pivoted for movement toward the free end of
each second pin, and a screw mounted on each lever and
1,085,894
1,341,602
Eagle ________________ __ Feb. 3, 1914
Swenson ____________ __ May 25, 1920
1,423,691
Sokolov ______________ _._ July 25, 1922
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