Motor-Actuated Locking Device for Automobiles Page: 4 of 5
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1,322,171
ing with the drive shaft 7. Should motion
be imparted to the shaft 7, say, for instance,
in a direction to operate the wheels for-
wardly, either by operating the motor (not
5 shown) of the vehicle or by pushing the
vehicle manually,. the clutch member 20
will move forwardly owing to its threaded
connection with the shaft, until the clutch
member 24 will engage the clutch member
10 26, thereby winding the spring 28 until the
clutch teeth 23 engage the clutch teeth 18 of
the clutch member 13, and owing to the
abutment disk 8, the shaft 7 will be locked
against further rotation. The drive shaft
15 7 may be locked when it is rotated in the
opposite direction or reversed, owing to the
fact that the clutch member 20 will feed
rearwardly owing to its threaded connec-
tions, and the clutch members between 20
20 and 14 will coact in the same manner as 'de-
scribed in regard'to the clutch members 24
and 26, and 18 and 23. However, to release
the driving shaft, the lever 35 may be re-
versed, that is operated whereby the gear
25 rack may be moved to release the clutch
member 20. Owing to the springs 28'under
tension, the clutch hubs 18 and 21 will dis-
engage, as will also the clutch members 24
and 26, until the clutch member 20'reaches
so its normal position. By a mechanism of this
kind, it is possible to lock an automobile,
and should it be discovered that the auto-
mobile is not properly'parked according to
the city requirements, the automobile may
35 be shoved manually, until it is parked ac-
cording to the requirements.
The lever 37 is provided with a locking
device, the bolt 37a of which, when disen-
gaged from between the teeth at the right,
40 as shown in Fig. 4, will automatically en-
gage the teeth at the left of the rack, when
the lever 37 is oscillated rearwardl'yi This
bolt 37a will remain in engagement between
the teeth at the left, of the rack, and can
45 not be disengaged therefrom until a key has
been inserted in the lock and the bolt with-
drawn, thereby preventing unauthorized
meddling with the lever, for the purpose of
operating the automatic lock on the drive
50 shaft. While a conventional form of lock
is illustrated in Fig. 4 for the lever 37, it is
obvious that any other suitable locking
means may be used on the lever, so long as'
it carries out the operation as above set
55 forth.
The gear rack 30 is also housed by an
extension 30a of the casing 30b, which forms
an integral part of the drive shaft casing
and the differential casing 3, thereby pre-
60 'venting the gear rack from being manually
disconnected from the central clutch mem-
ber 20. This gear rack 30 is curved concen-
trically with relation to the clutch gear
member 20, so that the teeth of the gear rack
65 will mesh with a number of the teeth of theclutch gear member 20, in order to prevent
accidental disconnecting of the gear rack
and the clutch member 20, when in gear.
This gear rack 30 is provided with exten-
sions 30c, which are mounted in guides 30", 70
so that the gear rack 30 can move toward
and from the periphery of the clutch gear
member 20. The lever 33 is connected to
the gear rack 30 by means of slot and pin
connections 33a, so that the gear rack can 75
move uniformly with relation to the clutch
gear member 20. It is to be remembered
that this gear rack may be mounted in the
extension of the casing in other ways, with-
out departing from the spirit of the inven- 80
tion. Also the casing 30b can be made in
two parts or otherwise constructed, so as to
be applied for the purpose of inclosing vari-
-ous parts of the shaft lock.
The invention having been set forth, what 85
is claimed as new and useful is:
1. In a locking mechanism for automo-
biles, the combination with a motor driven
shaft, abutment disks mounted thereon,
clutch members keyed to the shaft but ca- 90
pable of sliding thereon, yieldable means
between the clutch members and the abut-
ment disks, a major clutch member threaded
on the shaft intermediate said clutch mem-
bers and adapted to cooperate with either 95
one for locking the shaft, when the shaft is
rotated, and means for locking the major
clutch member, so that it will feed, axially
in one direction or the other on the shaft
when the shaft is rotated. 100
2. In a locking mechanism for automo-
biles, the combination with a motor driven
shaft, abutment disks mounted thereon,
clutch members keyed to the shaft but ca-
pable of sliding thereon, yieldable . means 108
between the clutch members and the abut-
ment disks, a major clutch member threaded.-
on the shaft intermediate said clutch mem-
bers and adapted' to cooperate with either
one for locking the shaft, when the shaft is 110
rotated, means for locking the major clutch
member, so that it will feed axially in one
direction or the other on the shaft when the
shaft is rotated, and means put.under ten-
sion when the major clutch member and one 115
of the first clutch members approach each
other to return the major clutch member to
its. normal position when released.
3. In a locking' mechanism for automo-
biles, the combination with a motor driven 120
shaft, abutment disks mounted thereon,
clutch members keyed to the shaft but ca-
pable of sliding thereon, yieldable means
between the clutch members and the abut-
ment disks, a major clutch member threaded 125
on the shaft intermediate said clutch mem-
bers and adapted to cooperate with either
one for locking the shaft, when the shaft
is rotated, means for locking the major
clutch member, so that it will feed axially 130
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Wherry, Robert D. Motor-Actuated Locking Device for Automobiles, patent, November 18, 1919; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1259517/m1/4/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.