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Патент USA US2127543

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Aug.l23_, 1938.
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LOCKING MECHANISM FOR MOTOR vEHICLES
2,127,543
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Filed Jan. l5,> 1936
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MLTUN 17175557715
@7m »L $4225
Patented Aug. 2,3, `1 938
~ 2,127,543
UNITED STATES PATENT .OFFICE
'2,127,543
LOCKING MECHANISM FOR MOTOR
VEHICLES
Milton Tibbetts, Detroit , Mich., assignor to Pack
ard Motor Car Company, Detroit, Mich., a cor
poration of Michigan
Application January 15, 1936, Serial No. 59,205
10 Claims. (Cl. 292-453)
This invention relates to motor vehicles, and mands, and yet will not materially add to the
expense of building the vehicle.
particularly to the locking mechanism thereof.
Another object of the invention is to provide
The present-day conventional automobile door
locking mechanism comprisesv a latch boit for
a locking mechanism for motor vehicles that
side of the door. ' The inside handle, or some
Another object of the invention'is to provide a
locking mechanism by which one of the doors of
5 each doorwhich may be `operated by a handle on will facilitate locking all of the doors either `from
the outside of the door or by a handle on the in ' the inside or the outside.
other device on the inside oi' the door, may be
moved to _a locking position so that the latch
10 bolt may be locked against operation from the
outside. This permits the operator on the inside
to individually lock all four doors .against out
side intrusion. Usually the right front door ls
provided with an outside key-operated lock for
l5 locking the latch bolt of` that door against re
traction. Thus the operator may lock the other
three doors of a four-door vehicle before he
leaves the vehicle and then lock the right front
door on the outside, thus securing all four doors
against outside intrusion.
a motor vehicle will be locked when another ad- jacent door is closed.
-
Another object `of the invention is to provide
a locking mechanism for adjacent doors >whereby
the latch bolt of one door is locked by the latch
bolt of the adjacent door.
Another object of the invention is to provide 15
an interlocking mechanismy between adjacent
doors which may be moved to and held in an in
operative position, so that the doors may be op
erated without the interlocking mechanism.
Another object of the invention is to provide
°
door interlocking means in which there are rioV
There is a demand by some motor vehicle own
additional projecting parts.
ers for an additional locking means for the rear
` Other objects of the invention will appear from
doors, a locking means that cannot be opened
by children in the rear`compartment, because
the following description taken from the draw
ing forming a part of this specification and in
which:
Fig. 1 is a horizontal sectional view through
adjacent doors and the door pillar of a motor
vehicle, showing one form of `the invention, both
35 these owners feel that vchildren are not safe in
the rear compartment with the present locks.
due tothe fact that even when the rear door
handles are placed in locked'posltlon, they are
easily operated and the doors can be opened
n by children: If this is done when the vehicle is >doors being in fully closed position.
'
moving rapidly; a serious accident may result.
There is also a demand from some motor ve
hicle owners for an easier means of locking all
four doors of the vehicle against outside intru
85 sion. Thus it is desirable that the rear doors
may be locked without reaching over the back of
l locked then the four doors of the vehicle can y
be more easily locked from the inside and three
40 of them can be locked from the inside and the
fourth from the outside with a key, so that both
forms of locking are more easily accomplished.
It is also believed that some motor vehicle
owners prefer the present individual door lock
` ß ing mechanism and particularly is this true with
chauiîeur-driven
vehicles.
‘
`
,
'
With these conflicting preferences, the man#
ufacturer would have to have several different
forms of locks and give the purchaser the option
5_0 of choosing which of them he would have, and
this would increase the cost and add to the diiil
vculties of the sale of vehicles./
-
Fig. 4 is a section, substantially on the line
4-4 of Fig. 1.
the front seat and if the rear doors can be so
c
Fig. 2 is similar to Fig.. 1, with one of the
doors unlatched.
Fig. 3 is an` enlarged section showing theA
mounting of the interlocking dog, such sectionbeing taken on the line 3-3 of Fig. l.
v
>It is one of the objects of the present inven'
tion to provide a locking’l mechanism that may
55 be used in various ways to meet' the‘various de
_
.Fig. 5 is a section on line 5_5 of'Fig. l.
Fig. 6 shows the principal -interlocking e1e-_-.
ments- of Fig. .1 with the interlocking dog 40
secured in inoperative position.
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_Fig. 7 is a section substantially onv the line
1-1 of Fig. l; and
'
Figs. 8, 9, and _10 show three dilîerent posi
tions of the interlocking dog.
Referring to the drawing, I0' represents that
portion of a motor vehicle forming the post or
pillar between two of the doors. It is shown as
built up of a channel member II and a shallower
channel member l2' which are .welded or other 50
` wise secured together.
A strip oi wood I3 is ar- ,_
ranged in the channel of the member I2 for
sound-deadening purposes and for attachment
of
upholstery.
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.
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I
Two of the doors of the vehicle close against 55
2
2,127,543
the post Il, and in the drawing the front door
is indicated at I4 and the rear door at I5. In
addition, these doors are marked “front” and
“rear.”
Cil
On the rear door side of the pillar II is the
usual'keeper or striker plate I6 secured to- the
pillar as by screws I1 threaded through the sheet
metal of the pillar and into a threaded block
I8 welded or otherwise secured to the pillar.- A
10 keeper or striker plate
I9 is similarly secured
to the pillar Il on the front door side thereof.
turn the dog on its axis. As this turning move
ment takes place the hooked end 4I at the other
end of the dog moves to its horizontal position _
into the recess 5I of the latch bolt 30.
Of course
this movement is again the action of the spring
41, which is thereby coiled to some extent, and
upon withdrawal of the latch bolt 22 the spring
41 returns the dog 4010 its former position, in
which the hooked end 4I is entirely out of the re
cess 5I and Within the _confines of the notch 2 l ' òf 10
and the second notch 2l and the plate I9 hav
ing ñrst notch 20’ and second notch 2|', the lirst
notch of each plate being for the purpose of re
the striker plate.
From the above description it will be seen that
with the rear door closed the act of closing the
front door will lock the rear door. Thus, with
the latch bolt 30 in the position shown in Fig. l, 15
the closing of the front door will cause the latch
taining the door in its nearly closed position if,
bolt 22 to ride over the notch 2| and move rear
Each of the'striker plates has the usual two
notches, the plate I6 having the ñrst notch 20
for anyreason, it fails to catch on the second
wardly, so that its beveled face 52 will contact
with the end 42 of the dog and rotate the latter,
20
The front door I 4l has the usual sliding latch so that the hooked end 4I thereof will enter the 20
bolt 22 spring pressed outwardly towards the ‘ recess 5I of the latch bolt 30. As long as the dog
pillar II by the usual spring 23 and guided by a is in that position the latch bolt 30 cannot be
pin 24 operating in a slot 25. 'I‘his pin also limits withdrawn by operation of either of its hand
the inward and outward movement of the latch operated devices, that is, it cannot be Withdrawn
bolt. The outer end of the latch bolt 22 is curved by operation of either the outside door handle or 25
or beveled as at 26, so that it will slide over the
the inside door handle. To unlock the rear door,
striker plate in the usual way- when the door is the front door latch bolt must be withdrawn, and
. notch.
closed.
this can be done only in case the front door latch
.
The usual means for retracting the latch bolt
30 may be connected thereto, and in Fig. l of the
drawing an outside door handle 21 is shown, hav
ing a shank 28 connected by the usual means (not
shown) for retracting the latch bolt, and a link
29 adapted for inside manipulation, for the same
35
purpose.
`
On theother, or rear side of the pillar 'I I, the
~ rear door is provided with a sliding latch bolt 30
similar> to the latch bolt 22 of the front door, and
there is also a similar door handle shank 3l and
40 an inside door releasing means similar to those
on the front door, for operating this bolt. Also,
the front door may be provided with the usual key
locking mechanism, not shown.
.
The interlocking means of this invention is
' shown in Fig. 1 in the form of a dog 40 having a
hooked portion 4I at its rear end and a bent end
bolt is not locked by its key-controlled mecha
nism. If not so locked, the latch bolt 22 may be 30
withdrawn by operation of either the inside or
outside door handle, and as it is withdrawn the
spring 41 returns the dog 40 to its unlocked posi
tion, as shown in Fig. 2, the hooked end 4I then
extending vertically downward and out of the re 35
cess 5I. In that position ofthe dog the latch
bolt 30 may be withdrawn by either of the hand
operated means.
Should the front door be closed before the rear
door is closed, the hooked end 4I of the dog 40 40
will, of course, be in the position shown in Fig. 1,
and as the rear door is then closed the latch bolt
30 will move ~forwardly and the beveled portion 50
thereof will engage the hooked end 4I of the dog
40 and further rotate the dog against the spring
42 at its forward end, the end 42 extending ap
41 until the end 4I slides over the beveled surface
50 into the recess 5I. The latch bolt 30 will then
proximately 90 degrees from> the direction of the4
be locked against withdrawal until the front door
hooked end 4I. The intermediate shaft portion
50 43 of the dog extends through openings 44 in the
pillar I0 and is provided with shoulders 45 which
abut against plates 46 which are welded or other
wise secured to the pillar, so that the dog may ro
tate on its longitudinal axis, but is prevented from
55 being moved axially with relation to the pillar.
'I'he dog 40 is yieldingly held by a ilat spring 41
to one end of which it is secured as by a rivet 48
and the other end of which abuts against a por
tion of the pillar as shown at 49 in Fig. 3. With
60 this spring construction the dog 40 may be ro-_
tated through 180 degrees and the spring 41 will
return it toits original position when released.
The latch bolt 30 of the rear door has the upper
part of its forward end formed with a beveled
surface 50, and just back of the beveled surface is
latch bolt is withdrawn as above described.
Should it be desirable to disconnect the inter
locking device, this may be done in the present in
vention, thereby making the latching mechanisms
of the two doors independent of each other. With
the front door open the dog 4l) may be rotated 180
degrees from the position shown in Fig. 2 to the 55
position shown in Fig. 6. And the dog may then
be held in that position by a catch 53 pivoted at
54 and having a ñange 55 at its outer end for
operating. Thiscatch 53 will prevent the dog 40
from being reversely rotated by the spring 41, and 60
as long as the dog is in the position shown in Fig. 6
there will be no interlocking action between the
latch bolts of the doors. This position of the
catch 53 is shown in Fig. 6. If the catch 53 is
returned to the position shown in Fig. 1 the inter
a recess 5I into which the hooked end 4I of the
locking dog will immediately return to its opera
dog 40 may extend when it is not in its‘horizontal, - tive position and will again act to lock the rear
position. It is shown in _that position in Fig. 1," door when the front door is closed.
and likewise in Fig. 9.
70
_
'I'he latch bolt 22 of the front--door also has its
end beveled as at 52 and the relationship of this
bolt to the dog 40 is such that, as the bolt moves
past the notch 2|', the bent end 42 of the dog will
contact with the beveled part 52 of the latch bolt
75 22 and thereby push the bent end upwardly and
50
It will be noted that this interlocking mecha
nism is entirely within the margins of the striker
plate, and there is nothing projecting from the
edges of the door except the usual latch bolt, so
that there is nothing‘additional to catch the
clothing of a person entering or leaving the
vehicle.
3
2,127,543
end 4| extending downwardly so that it does not
enter the recess 5l of the latch bolt 30. The bent
4. In a motor vehicle, the combination of front
and rear doors, each door having a latch bolt,
and means extending from one latch bolt to the
other for locking one of said doors by the move
ment of a part of the other door movable relative
end 42 is in .a position to be operated upon by
to said other door.
The three positions of the interlocking device
are well shown in Figs. 8, 9, and 10. In Fig. 8
the dog is in its non-locking position, the hooked
the latch bolt 22 when the front -door`is closed.
" \In Fig. 9 the front door has been closed and the
beveled surface 52 _of the latch bolt 22 has turned
10 the dog 40 so that its bent end 42 extends up
wardly and its hooked end 4I is in the recess 5i
of the bolt 3l), thus locking the bolt 30 to the
striker plate and preventing it from being With
drawn by the usual hand-operated means. The
15 locking dog and its associated parts are of suffi
cient strength relative to the bolt operating means
that the latter will be broken or disabled before
the locking dog will give way. In Fig, 10 (and
in Fig. 6 also) the dog 40 has been turned to its
20 inoperative position, where it- may be held by the
catch 53 above referred to, and in this position
the doors may be independently operated.
While I have herein described in some detail
a specific embodiment of my invention, which I
25 deem to be new and advantageous and may spe
ciflcally claim, I do not desire it to be under
stood that my invention is limited to the exact
details of the construction, as it will be apparent
that changes may be made therein without de
30 parting from the spirit or scope of my invention.
What I claim is:
,
1, In a. motor vehicle, the combination with`
two doors each having a latch bolt, of locking
means for one of the doors comprising a rotat
35 ingl dog operated by one of the latch bolts to lock
the other latch bolt.
'
2. In a motor vehicle, the combination of two
doors, each having a latch bolt, of locking means
for one of the doors comprising a locking dog ex
'40 tending from one latch bolt to the other, and
means for yieldingly maintaining the locking
means in unlocked position.
3. Door locking means comprising latch bolts
for two doors and means extending from one
45 latch bolt to the other and operated by one latch
bolt for effecting locking of one door by the other
door.
`
' 5. In a -motor vehicle, the combination with
two doors each h'aving a latch bolt, of means dog
ging the latch bolt of one door -from the other
door, said means operated by one of the latch 10
bolts.
'
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6. In a motor vehicle, the combination with
two doors each having a latch bolt, of means
clogging the latch bolt of one door from the other
door, said means interconnecting the latch bolts. 15
7. In a motor vehicle, the combination with two
doors each having a latch bolt, of means dog
ging the latch bolt of one door from the other
door, said means operated by one of the latch
20
bolts to lock the other latch bolt.
8. In a motor vehicle, the combination with
two of the doors thereof, of latch and lock means
for said doors comprising a latch bolt for each
door, striker means for the latch bolts, and lock
ing means for locking one door from the other,
said latch and lock means being wholly within
the fore and aft confines of the doors and strikers
except those parts thereof comprising the latch
bolts.
9. In a motor vehicle, the combination With f’
two of the doors thereof, of latch and lock means
for said doors comprising a latch bolt for each
door, striker .means for the latch bolts, and lock
ing means for locking one door from the other,
none of said latch and lock parts other than the
latch bolts extending fore and aft beyond the
doors or strikers.
10. In a motor vehicle, the combination of a
door having a latch bolt, a door pillar having a
keeper for the latch bolt, interlocking means in 40
the keeper and latch bolt for retaining the latch
bolt against withdrawal, a second latch bolt, and
means on the second latch bolt for moving the
interlocking means into locked position.
` MILTON TIBBETTS.
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