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Патент USA US2119456

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Mwßl, 1938.
c3- A. DIES
Filed Feb. 10, 1937
2,1 19,456
'atented May 31, 1938 `
Charles A. Dies, Chicago, Ill.
Application February 10, 1937, Serial No. 125,142.
s claims.
My invention is an improvement in door locks,
md- relates to the general class of latches in
:ontradistinction to the use of sliding bolts In
ing opposite ñanges I3 by which it is attached
to the aforementioned plate by studs I4, with
screw holes I5 through the-plates for attachment
:onnection with ordinary door locks.
It is customary to provide the doors of apart
of the lock casing to the door as by means of
’screws I6, and within this casing there is slid 5
ably mounted a latch plate I1 _having hook
shaped members I8, I8 projecting from one end
of the lock casing to engage a keeper plate I9
ments and other dwelling houses, as well as
stores, with locking means yin addition to the
ordinary mortised lock having a spring-actuated
latch and sliding bolt, for further security, and lhaving spaced apart loops 20, 20 with which the
lt is Ytherefore the main purpose of my invention » hooks of the latch engage. For guiding the latch
plate in the lock casing there is a vertical rib
to provide locking means that can be readily ap
2| formed on the plate I0 received in a vertical
plied to a door and easily removed so that a
temporary occupant of an apartment or dwelling ' groove 22 in said latch plate, and in order that
this latch plate may be reversed for application
may easily remove the lock and use it on the
door of another apartment or dwelling occupied to a door opening either to the left or right it is
provided with grooves, 22, at opposite sides
by him, although it may be also used as a perma
nent attachment to a door.
A further object of my invention is to provide
a removable door lock of comparatively simple
The latch plate has free movement in '
the casing so that it will drop by gravity into
engagement with the loops of the keeper plate,
construction that will not only dispense with the ~ and therefore it is desirable to have a thick
plate for the required weight in operation.
use of springs, that 'are liable to get out of or
To raise and lower the latch plate it is pro
der, but will also include peculiar means for rais
ing and lowering the latch plate movable into ' vided with an opening '23 to receive the shank 24
and lug 25 of a turnbutton 26, the shank extend
locking position by gravity.
ing through the cover plate I2 and being of such
With these principal objects in view my inven
tion contemplates the provision of a vertically length as to locate the knob away from the lock
casing for manipulation, with a sleeve 21 inter- sliding latch plate enclosed within a casing se
cured to the inner side of the doorv and having posed between the knob and lock casing. By` ref
erence to the drawing it will be noted that the
projecting hook shaped members adapted to en
gage loops in a keeper plate, in association with opening in the latch plate is of a particular
a turnbutton for manipulating the latch plate shape for the operation of the lug on the turn
button; that is to say, the opening is of a width
from the inner side of the door, and a remov
able key for operating the turnbutton from the vertically to correspond with the length of the
lug and cross-section of the shank, and has con
outer side of the door, as hereinafter fully- de
scribed and specifically set forth in the appended verging curved YWalls or lug engaging surfaces 35
In the accompanying drawing:l
Figure 1 is a front elevation of a door lock
constructed in accordance with my invention.
Fig. 2 is a vertical rsectional view o'n the line
2-2 of Fig. 1.
Fig. '3 is a detail sectional view of the lock
on the line 3-3 of Fig;- 2.
Fig. 4 is a detail perspective view of the slid
ing latch plate.
Fig. 5 _is_ a detail sectional view of the turnbut
ton forming a part of the lock. l
Fig. 6 is an end view of the turnbutton,
Fig. 'I is an end view of a turnbutt'on illus
trating a modification of the key hole, and
Figs. 8 and 9 are detail views of diiïerent
forms of keys usable in connection with the lock.
In carrying out my invention I employ a two
part casing comprising a ñat plate I0, to bear
against the door Il, and a housing plate I2 hav
28, V28 extending outwardly >from a straight wall
29 at the opposite side of the lug from said
curved walls, with the latch plate conñned to a
direct vertical movement by the rib or spline
hereinbefore referred to. It is preferable to 40
have straight horizontal walls immediately- above
and below the shank and lug between the curved
' walls and vertical wall referred to, so that when
the lug is turned upward to raise the latch, or.
downward to lower'the latch, the turning of this 45
turnbutton by accidental movement of the latch
plate, especially` in the raised positionof the
latter, will be prevented, and the lowerstraight
horizontal Wall will prevent lifting of the latch
plate to unlock the door independently of a man
ual operation of the turnbutton, asÍfor instance
by an instrument passed through the crack be
tween th_e door and jambj As will be obvious,
the straight wall 29 limits the throw of the lug 55
’ to one direction or towards the curved walls with
which its outer end engages in the normal opera
the flange on the plug engages the inneriend of
the collar when a further half turn will lower
the latch plate into locked engagement >with the
keeper plate.
The turnbutton provides for operating the slid
From the foregoing description, in connection v,
able latch plate from the inner side of the door,
and it will be noted by reference to Fig. 3 that' l,with the accompanying drawing, it. will be seen
tion of the latch plate.
when the latch plate is raised as shown in dotted ' that I provide a very simpleform of door lock
`,lines, in unlocked position with respect to the - in which the hooks of a vertically movable latch
keeper plate, it rests directly on the outer yend plate engage loops of'a keeper plate onrthe door
of the vlug so as to be firmly supported thereby,
and to lock the door the turnbutton is given a
half turn clockwise so as to release the latch
jamb to securely fasten or lock the door closed,
and that to unlock the door from the inner side
plate and permit it to drop by gravitation, the
lug then being in the position shown in full lines
to prevent raising said latch plate in .any other
manner than by means of the turnbutton.
plate, while from the outer side of the- door it
To operate the turnbutton or lug from 'the
outer side of the door itis only necessary to pro
vide the inner end of the shank with means for
the engagement of a key that will act’to manip
ulate said turnbutton, as for instance a keyhole,
such as illustrated in Figs. 6 and 7, may be
formed directly in the end of the shank, and
either astraight key, 30 (Fig. 9), or a key hav
ing a flexible shaft 3| (Fig. 8) ,` used in connec
tion therewith. When a key with a flexible in
termediate portion or shaft is used the opening
through the door for the insertion of the key to
engage the turnbutton is serpentine, as shown
in Fig. 2, thus requiring a key oi’ this kind to
be used in the operation of the lock. ToI provide
a serpentinepassagewayfor the flexible key I
employ a bent tube 32,» and for convenience 'in
applying this tube to the door it is Welded in a
cylindrical bushing 33 inserted in a correspond
as ing
opening through the door and held in place
from being withdrawn from the outer side of
said doorvby a circumferential flange ~34 at its
inner end. By this arrangement it is only neces
40 sary to drill a straight hole through the door
to receive the bushing and countersink the inner
end of the hole to receive the flange so that the
lock casing will retain'the bushing inplace, the
usual escutcheon 35 being secured at _the outer
the turnbutton is manipulated to liftthe latch
will require a key to operate the turnbutton, ‘the
locking of the door from the inner or outer side
thereofbeing accomplished in- like manner to
lower the» latch plate. In either position of the
latch plate it is firmly held by the lug project
ing in a vertical plane from the shank of the
turnbutton. Although the weight of the latch
plate will cause it to be lowered by gravity lt
will be noted that this operation is also eifected
by the lug of the turnbutton engaging the lower
curved „wall of the opening in said latch plate,
and in locking the door the turnbutton should
be operated for the positioning of the lug verti
cally to prevent lifting of the latch plate by way
of the projecting hooks. In other words, when
a door is locked by means of my improved slid
able latch plate and turnbutton it can be un
locked only by the operation of the turnbutton,>_
and by providing the serpentine passageway for
the key there is additional security against any
one breaking into the building, for this will not .
only require the use of a flexible key but the
winding passageway obscures sight of the key
hole. Furthermore, any attempt to open the
door by one unfamiliar with the operation of
the lock would be met by the peculiar key en
gaging means associated with the turnbutton
requiring several turns of the key, thus serving
to confuse the person making the attempt.
The lock may be used as a fastening means lh
addition to the ordinary mort'ised lock, or as the
side of the door to cover the outer end-of the ` only means for locking av door, swinging window,
or other movable part of a building or other
Instead of operating the turnbutton by the structure.
simple means of a keyhole in the end of the
shank of said turnbutton I prefer to provide the -
shank with a turnable member requiring several
turns of the key before positive operative en
vI claimz-
1. A door lock comprising a casing, a vertical
This arrangement is
spline on one of the plates thereof, a latch plate
slidable vertically in the casing and having ver
tical grooves in opposite sides thereof cooperat
illustrated in Fig. 5 of the drawing in which the
ing with- the spline for adapting said latch plate
' gagement of the parts.
shank 36 of the turnbutton is recessed at its ` to be reversed in the casing to accommodate
55 inner end vto receive' an internally threaded col
lar 31 fixed therein to terminate a short distance
from the inner end of the recess, and in con
nection with this collar there is a' turnable plug
doors opening to the right or left, hook-shaped
members4 projecting from the latch plate beyond
the casing for engagement with a keeper plate,
an opening in the center of the latch plate, and
38 having a keyhole 39 at its outer end and a
a turnable element having a lug working in the
peripheral flange 40 at its inner end, the latter
opening to engageA the yupper and lower edgesy
of ‘said opening for raising and lowering the
latch plate’ coacting to hold the latter in the
_ playing in the space between the collar and inner
end of the recess so that several turns of the
.V plug will be required before it will abut against
the opposite stops for> responsive movement of
'I‘he engaging threads are
65 the turnbutton.
pitched so that in lifting the latch to unlock the
door the key is turned clockwise until the turn
respective positions thereof.
' 2. A door lock comprising a casing, a latch
end of the recess (see
5) when a further
70 half- turn of the key and plug will cause the lug
to engage the upper wall of the opening in“ the
plate slidable vertically in the casing and havingmembers projecting therefrom to engage a keeper
plate, an opening through the latch plate pre
senting spaced apart upper and lower walls, a
turnbutton having a shank extending into the
lock casing, a lug projecting from the shank and
working in the opening between the aforesaid
latch plate and lift the latter to the position
upper and lower walls of the latch plate to raise
shown in dotted lines in Fig. 3. Likewise, to
' lower the latch plate will require the key to be
75 turned several times counterclockwise or until
and lower the same, a recess in the inner end of
the lug, a threaded plug turnable in the recess
,.ng of the plugis stopped by abutting the inner
for independent longitudinal movement therein,v
keeper plate. un opening throulh the latch plate
movement of _the-llt. '
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