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Патент USA US2134922

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Nov. 1, 1938'.
R. W. LAING
2,134,922‘
LOCKING DEVICE
Filed March 2, 1958
2 Sheets-Shem l
amen/11m
7?. M44407;
W
Nov. 1, 193$.
R WLAING
2,134,922‘
LOCKING DEVICE
Filed March 2, 1938
2 Sheets-Sheet 2
Patented Nov. 1, 1938
A 2,134,922
UNITED STATES
PATENT OFFICE
2,134,922
LOCKING DEVICE
Robert W. Laing, Cleveland Heights, Ohio
This invention
Application March 2, 1938, Serial No. 193,478
6 Claims. (01. 70-428)
relates broadly to locking jects outwardly therefrom.
mechanisms and more speci?cally to means for
temporarily preventing access to the standard
latches or locks on doors.
5
The principal object of the invention is the
provision of a locking device for use by fumi
gators to prevent all persons from entering a
room containing poisonous gases. It may be
used, if desired, in connection with danger signs,
10 but when it is used, it is unnecessary to rely
upon signs and the collecting of all keys as at
present.
Another object of the invention is to provide a
locking means that is quickly and easily at—
15 tachable to doors having a latching mechanism
but no locking mechanism.
Still another object of the invention is the
While the cover 8
may be made of any desired size I prefer to make
it fairly large so that it may be used to cover
latching and locking mechanism of various
shapes and sizes. The bottom wall H has a
plurality of pairs of apertures I3 therein, for a
purpose to be described hereafter.
The locking and retaining means In shown in
Figs. 1 to a inclusive consists of a short length of
chain M and a standard bicycle type of lock 10
comprising a lock proper l5, and a U-shaped ele
ment it having the usual notches I‘! in legs [6a
thereof.
In operation the chain I4 is wrapped around
the reduced shank ‘iii of the knob 1 and the 15
U-shaped element I6 is inserted thru links adja
cent each end of the chain. The cover 8 is then
pro-vision of a device of this character that can
placed against the door in such a manner as to
be used in combination with various types and
20 sizes of standard door latching and locking
mechanisms,
Other and more limited objects of the inven
tion will be apparent from the following speci?
completely enclose all accessible parts of the
latching and locking mechanism and the legs 16*‘
cation and the accompanying drawings forming
tightly engaging the legs Isa, of the U-shaped
25 a part thereof wherein Fig. 1 is a perspective
view of my invention showing it in use; Fig. 2
is a central vertical section thru one form of
my invention; Fig. 3 is a section taken on the
line 3——3 of Fig. 2; Fig. 4 is a horizontal sec
30 tion taken on the line 4-—4 of Fig. 2; Fig. 5
is a view similar to Fig. 2 showing my device ap
plied to a door having a different type of latch
ing mechanism and Fig. 6 is a view similar to
Fig. 2 showing one way of applying my invention
35 to a door having only a locking mechanism
thereon.
element It, and the cover 8, thus preventing ac
cess to the latching and locking mechanism 3
Referring to the drawings by reference char
acter, l indicates a door, 2 the door jamb and 3
the latching and locking mechanism. The latch
40 ing and locking mechanism 3 is of any well
known standard construction having the usual
latching bolt 4, which is spring pressed into en
gagement with the keeper 5 when the door is
closed, and the key operated locking bolt 6. The
45 latching bolt 4 is withdrawn from the keeper 5
by turning the knob ‘I. All of the structure just
described may be of any well known construction.
My invention consists generally of a box like
cover ii, which is placed against the door I in
50 such a, manner as to completely enclose the ac
cessible parts of the latching and locking mech
anism 3; and a locking and retaining means III
for securely holding the cover 8 in position.
The cover 8 comprises a bottom wall II and
side walls l2 formed integral therewith and pro-
of the U-shaped element l6 are projected out
wardly thru one pair of apertures lit. The lock
proper I5 is then locked into the position shown,
and making it impossible for anyone not having
a key to lock I5 to open the door I.
Having a
plurality of pairs of apertures l3 in the bottom
wall H of the cover 2 makes it possible to easily 3O
accommodate the cover to various different types
and sizes of latching and locking mechanisms as
desired.
_
In Fig. 5 I have shown a di?‘erent type of latch
ing mechanism. In this form the chain I4 is 35
dispensed with and the U-shaped element engages
the bail l8 of the latching mechanism.
In Fig. 6 I have shown my device applied to a
door having no latching mechanism and a look
ing mechanism having no projecting parts to
which the cover locking and retaining mech
anism in may be secured. In instances of this
kind an‘ eye bolt I9 is screwed into the door and
the U-shaped element I6 is inserted thru the
eye 20 thereof.
45
From the foregoing it will be apparent that I
have developed a very simple, cheap, and ef?cient
device for accomplishing the objects of my inven
tion.
It is to be understood that I do not intend to
restrict my invention to the speci?c construc
tion and application shown and described herein,
as various modi?cations and applications thereof
are possible within the scope of the appended
claims.
55
2
2,134,922
Having thus described my invention, what I
claim is:-——
1. In a device of the character described, the
combination of a cover, having bottom and side
walls, for completely enclosing the latching mech
anism on a door, apertures in the bottom wall of
said cover, a chain secured to the latching mech
anism within the con?nes of said cover, a U
shaped element inserted thru links of said chain
10 and extending outwardly thru said apertures, and
a lock engaging said U-shaped element and said
cover for holding said cover in place and prevent
ing access to the latching mechanism.
2. In a device of the character described the
15 combination of a cover having bottom and side
walls for completely enclosing the latching mech
anism on a door, apertures in the bottom wall of
said cover, a ?exible member secured to the
latching mechanism within the con?nes of said
types and sizes of latching mechanisms and com—
prising side walls, and a bottom wall having a
plurality of spaced aperture means therein, a
?exible element secured to the latching mech
anism within the con?nes of said cover, means
engaging said ?exible element and extending out
wardly through one of said aperture means, and
a lock engaging the outwardly extending por
tion of said means and said last mentioned cover
for holding said cover in place against the door 10
and around the latching mechanism.
5. In a device for temporarily preventing access
to the latching mechanism on a door, the com
bination of a cover for completely enclosing the
latching mechanism thereof, the said cover being 15
of such size and shape as to be applicable to vari
ous types and sizes of latching mechanisms and
comprising side walls, and a bottom wall having a
plurality of spaced aperture means therein, means
member and having the legs thereof extending
secured to mechanism on the door Within the 20
con?nes of said cover and extending outwardly
outwardly through said apertures, a lock engag
thru one of said aperture means, and a lock on
20 cover, a U-shaped element engaging the ?exible
ing the outwardly extending legs of said U —shaped
gaging the outwardly extending portion of said
element and said cover for holding said cover in
means and said cover for holding said cover in
25 place and preventing access to the latching mech
anism.
3. In a device of the character described the
combination of a cover having bottom and side
place against the door and around the latching
mechanism.
Walls for completely enclosing the latching mech
30 anism on a door, aperture means in the bottom
wall of said cover, a ?exible member secured to
the latching mechanism within the con?nes of
said cover, means engaging the ?exible member
and extending outwardly through said aperture
35 means, a lock engaging the outwardly extending
portion of said means and said last mentioned
cover for holding said cover in place and pre
venting access to the latching mechanism.
4. In a device for temporarily preventing access
40 to the latching mechanism on a door, the com
bination of a cover for completely enclosing the
latching mechanism thereof, said cover being of
such size and shape as to be applicable to various
25
6. In a device for temporarily preventing ac~
cess to the latching mechanism on a door, the
combination of a cover for completely enclosing
the latching mechanism. thereof, the said cover 30
being of such a size and shape as to be applicable
to various types and sizes of latching mechanisms
and comprising side walls, and a bottom wall hav
ing a plurality of pairs of apertures therein, a
U-shaped element engaging mechanism on the 35
door within the con?nes of said cover and hav
ing the legs thereof extending outwardly thru
one of said. pairs of apertures, and a lock engag
ing the outwardly extending legs of said element
and said cover for holding said cover in place 40
against the door and around the latching mech
anism.
ROBERT W. LAING.
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