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Патент USA US2121515

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June 21, 1938.
. L c Wm
Filed July 26, ‘1957
" 7
BY - %WA%
Patented June 21, 1938
Isaac 0. White, Glendale, Calif.
Application July 26, .1937,‘ Serial No. ‘155,725
3 Claims.
The principal purpose of this invention, and
the more particular object thereof, is to improve
upon or supplement in certain respects, the lock
described and claimed in my Patent No. 1,378,504,
52;: dated May 17, 1921, and this invention therefore
consists in the construction, arrangement and
combination of parts, substantially as will here
inafter be more fully described and claimed.
An object therefore of the present invention is
10 to substantially incorporate the features and ob
jects of the knobless lockdisclosed in my said
Patent No. 1,378,504, materially changed in its
mechanical structure, however, and as greatly
improved in its scope.
A further object is to provide a knobless lock
embracing both main and auxiliary latch or bolt
locking means, together with separate actuating
means cooperatably positioned, whereby the aux
iliary locking means may be employed to setlthe
20 main‘ locking means against actuation when pres
sure is applied-to the door to which the lock-is at
tached for moving said main latch in the manner
disclosed in my said Patent No. 1,378,504.
A ‘further object is to provide the auxiliary
2 , latch with a disengageable latch lock and release
key means operatable on one side of the lock only
so asto ‘prevent the unauthorized opening of the
locked door from the opposite side, without the
necessity of fully extending the main latch by
means of its-key.
. A further object is to provide an auxiliary latch
which may be actuated from the side opposite
that controlling the operation of the auxiliary
locking means by meansv of the key for actuatingv
35 ,, the main latch.
Other objects and advantages of the inven
tion will more fully appear as this speci?cation
proceeds and as set forth in the appended claims.
I attain these objects by the lock disclosed in
the accompanying drawing, in which:
Figure 1 is a face View of my improved lock with
the cover plate removed showing the auxiliary
latch in locked position;
Figure 2 is a similar view showing the auxili
45. 1. ary latch in unlocked or retracted position, actu
ated by either the lock key or the latch lock set
and release key, and with the main latch re
tracted by pressure against the door;
ing an alternative type of key hole 'and‘showing
the latch lockset andrelease key means, together‘
with cut-away portions of the lock cover;
Figure 7 is an elevation of the key used to actu
ate the lock shown in Figure 6, and
Figure 8 is a sectional view on-the line 8;-8~of‘
Fig. 6.
In carrying out this invention,- I‘employ a main-Y
locking mechanism corresponding to that shown
in my present patent, and which essentially in‘- 10
cludes a latch and lock bolt‘ l9 carried'by a lock
casing l3 in a door Ill and'cooperating with a
slotted lock plate l2 on the door jamb' I l. The
bolt‘ is normally held in latching position by
means of a lever 23 of reversed C shape and a 15
spring 28. At its upper end the lever is pivoted
at 22 to the casing so that its lower end is urged
against a shoulder 18 of said bolt by said spring,
while a detent portion 25 on said lever engages in
a notch 26Yof the bolt to limit the outward move 201
ment of the bolt to latching position only. When
the bolt is in latching position a roller 20 thereon
extends into the slot of the plate l2 as shown in
Figure‘ 1, su?icient to latch the door, but normally
subject, to‘ release when pressure is intentionally‘ 25.;
applied to the door, the pressure causing the
roller to act as a cam on the plate 12 and'to be
moved‘with the bolt into the unlatched position
shown in Figure 2. When the bolt is thus moved
inwardly the shoulder I8' pushes on and rocks the 301
lever 23 so as to lift the detent 25 clear of notch
26, but‘ upon removal of said pressure the spring
acts thru lever 23‘and said shoulder IE to return
the detent and bolt to their latching positions.
Provision is made for moving the bolt from
latching into locking position (as shown in dot
ted lines in Figure 1) and vice versa, by means of
a‘key- such as shown 29, or any other suitable
key which when inserted as is customary, may be
turned to engage in a notch 30 in the bolt.
A portion 24 of the lever 23 is exposed in the
notch 30 so that: the. key will ?rst engage and
lift‘the lever upon entering‘said notch and then
engage one of key engaging portions formed by
the'sidesof the notch and move the bolt‘in or out, 45;‘
depending upon the movement of ‘the key. When’
the bolt is moved‘into locking position the detent
25 will engage in a locking position notch 21 in
Figure 3 is a sectional view on the line 3-3 of
the bolt. When the lever 23 is raised by turning
Figure 4 is a sectional view on the line 4-4 of
the key as aforesaid the detent 25 is moved out of 50; J
said notch 21.
It is now seenthat door knobs anditheir as
sociated latch mechanism may be dispensed with
Fig. 1;
Fig. 1;
Figure 5 is an elevation of the key used to ac
55. ‘
(Cl. 70-443)
tuate the lock shown in Fig. 1;
Figure 6 is a face View of‘a similar look but hav
by the use of thelock herein disclosed.
Referring further more in detail totheim
provement thereof, an auxiliary latch is provided
with a hub 2 embracing reduced end portions 3
which serve as trunnions for pivotally supporting
the latch I between the lock casing I3 and lock
cover I4, said trunnions entering apertures 4
provided in the casing and cover.
A cam portion 5 of the latch I extends there
from between the casing I3 and an inner plate or
shield 6 which is secured to said casing as by riv
ets ‘l and spacers or washers 8. A pin 9 is set in
the latch I near the extremity thereof for pur
poses hereinafter set forth. The shield 6 is pro
vided with an aperture 6' of sufficient size and
shape so as to permit the passage therethru of
15 the key 29.
The extremity of the latch I is shaped as an arc
concentric with the hub 2.
In Figure 6, a means is provided for the use of a
style of a key different from the key required for
actuating the lock shown in Figure 1, said means
includes a pivoted cylinder “C” which is trun
nioned between the casing I3 and the cover I4 in
a manner similar to the mounting of the hub 2.
This type of key lock with slight mechanical var
25 iations may readily be adopted to comprise a lock
of the cylinder key type, the type shown being so
shown as a matter of expediency merely, and not
by way of limitation of the invention.
The latch lock set and release key K has a
30 squared shank and is adapted for‘ disengageable
insertion into the hub 2 for actuating the latch.
In operation, when it is desired to prevent the
unauthorized opening of the door III, the latch I
is turned to the position shown in Figure 1, so
35 that the shoulder I8 of the bolt I9 strikes against
the arc shaped extremity of the latch I which is
restrained against further movement by prox
imity of one of the spacers 8.
The latch I may be released by actuating it
by means of the latch set and
40 release key, or by turning
the lock key clock-wise
against the cam 5 as best shown in Figure 2.
The key is bifurcated so that the bifurcations
straddle the shield 6 as the key is rotated, thereby
determining that one of the bifurcated forks shall
be restrained beneath the shield 6 so as to posi
tively engage the cam 5 and at the same time by
reason of the two forks, su?icient width and
strength is provided for operatively engaging the
portion 24 of the lever 23.
The pin 9 carried by the latch i is designed to
snap into either of the recesses 9’ when the latch
is moved to the locked position, or to the re
leased position as the case may be, and thereby
55 prevents accidental displacement of said latch,
the latch being slightly resilient to permit this
snapping action of thesaid pin.
Other than as thus described, the several com
ponent parts of my improved lock are identical
with those shown and described in my patent as
It should now be apparent that by reason of
the latch I, an auxiliary lock means is provided,
and that an effective door locln'ng medium is ob
65 tained by merely moving the latch into latching
position as shown in Figure 1, while the lock bolt
is allowed to remain in the latching position also
shown in said figure. In other words the door
may effectively be locked without using the key
70 to move the bolt into “key-locked” position, al
though this position may be obtained if desired.
The lock may be produced in various sizes and
for various purposes, for light weight or heavy
weighted doors such as screened or solid doors,
for example.
For convenience, separate door pulls may be
employed for drawing the door inwardly, if de
sired, none, however, are required, and no other
substitution for the ordinary standard door knob
mechanism need be made.
It is important to note that the main lock key
may be used to release the latch I as well as the
key K, and that said latch will remain in latched
position when the bolt I9 is extended out of look
ing position. Thus, when the bolt is retracted 10
from looking to latching position, the latch will
prevent door pressure actuation of the bolt
and it is therefore necessary to retract the latch
by either method as aforesaid.
Readily produced from materials obtainable in 15
the open market, and at slight costs, the lock
readily commends itself for its ingenious fool
proof features and thorough practicability.
I am aware that slight modi?cations may
from time to time be made in the details of struc 20
ture without departing, however, from the scope
of the present invention, and as de?ned in the
claims which are appended hereto. Hence, I
do not limit my present invention to the exact
description of construction herein disclosed, but 25
what I do claim is:
l. A look comprising a casing, a single bolt
operably related to said casing and arranged to
latch a door when in one position and to lock the
door when in an another position, a spring urged 30
lever pivoted to the casing and engaging and nor
mally maintaining said bolt in latching position,
key engaging portions on said lever and bolt ar
ranged to ?rst actuate the lever to release the
bolt and then shift the bolt when successively en 35
gaged with a key turned thereagainst, a latch, and
means for moving said latch into and out of posi
tion for obstructing the unlatching movement of
said bolt, and a key engaging portion on said latch
for moving the latch out of latching position 40
when engaged by the said key, and the latter is
disengaged from the key engaging portions on
said lever and bolt.
2. A look having a casing, a bolt arranged to
be placed in either looking or latching position,
key engaging means for shifting the bolt from
one position to the other, recesses in said bolt,
a lever pivoted to the casing and having a detent
for engaging said recesses for retaining the bolt
in its locking position and for restraining the
bolt from moving from its latching position to its
locking position, a spring for retaining the lever
in its normal position, and a projection on the
lever for engaging the bolt when in latching po
sition for yieldingly holding it in such position, 55
key engaging means on said lever for moving
same to disengage the projection from the bolt
and a latch pivoted to the casing and movable
into and out of a position restraining said bolt
against releasing movement out of its latching
position, a key engaging portion extending from
said latch between the ends therefrom and ar
ranged to be engaged by the key for operating
said bolt and said lever upon movement of said
key in a direction opposite that required to op 65
erate said bolt and lever, and a detent projec
tion on said latch, said casing having depressions
adapted to be engaged by said detent projection
to releasably hold the latch in operative and
inoperative positions.
3. A look including the combination of a cas
ing, a bolt mounted therein for disposition into
and out of latching and locking positions, a spring
loaded lever pivoted in the casing and having a
portion arranged to engage and move the bolt 75
into latching position and which causes the lever
to be rocked on its pivot when the bolt is moved
inwardly from its latching position, a detent
member on said lever for engaging and holding
said bolt against movement in either direction
out of latching position and which disengages
from said bolt upon said rocking movement of
the lever and again engages and holds the bolt
against movement when the latter is moved into
locking position, key engaging portions on said
bolt and lever for effecting movement of the
lever out of bolt engaging positions and movement
of the bolt into and out of locking position, a
latch, means operable at will for moving the latch
into and out of position preventing the move
ment of the bolt out of its latching position,
a key engaging portion on the latch operating
responsive to engagement therewith of the bolt
and lever actuating key, for moving the latch
out of latching position, and a member on said
casing disposed to be engaged by said key en
gaging portion of
said latch to limit the move- 1Q
ment of the latch in one direction.
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