United States Patent O
IC@
2,781,220
Patented Feb. 12, 1957
2
?ìcation wherein a door knob is replaced with a sleeve
2,781,220
positioned over the stem or lock bolt and in which
the device is secured to the lock bolt with a set screw
similar to the set screw of a door knob.
NO-GRB’ DOORKNOB COVER
characters denote corresponding parts, the improved door
Henry Zietlow, Wausau, Wis.
knob cover of this invention includes a length 10 of
Referring now to the drawings wherein like reference
tubular material having a cord 11 for securing one end
of the material gathered or in a closed position and a
Application July 8, 1954, Serial No. 442,008
10 cord 12 threaded through the material and spaced from
1 Claim. (Cl. 292-347)
`the opposite end whereby the device may be retained in
position over a door knob, as shown in Figure 2.
With the device formed of a material, such as a loose
This invention relates to devices for preventing children 15 mesh which is capable of being molded, twisted paper,
or hard cord, it will be dilïicult to obtain suñ‘icient fric
opening doors, such as a door leading to a basement or to
an attic, and in particular, a tube formed of a mesh
which is capable of being molded, twisted paper, hard
tion-gripping contact with a door knob over which it is
positioned to permit a small child to turn the knob to
open a door, whereas with the large hand of an adult
cord, or the like, positioned over a door knob and
gathered together and tied on both sides of a knob where 20 extended completely over the material and door knob,
the knob may readily be turned and the door opened.
by the device slips around on the knob when a child
With the cord 12 on the inside of «the door knob tied
attempts to open the door by turning the knob and
with a bow knot, the cover may readily be removed and
wherein the knob may be turned and the door opened by
replaced as desired.
an adult firmly gripping the knob.
In instances where it is substantially impossible to use
The purpose of this invention is to provide a device 25
the mesh cover on a door knob, the knob may be removed
that may readily be installed on door knobs to prevent
and replaced with a stem or sleeve 13, as shown in Fig
children being injured by opening doors leading to stair
_ure 3, the stem being provided with an enlarged hub or
ways and the like.
base 14 having a set screw 15 therein and also having a
In numerous instances, children open doors and not
16 on the end of the hub, the ilange being adapted
only get into mischief, but are injured by falling down 30 flange
to be positioned against a base plate 17 of a door latch
stairways or playing with articles that are readily dam
aged and as inside doors are not provided with locks it
is diliicult to prevent such doors being opened by small
children.
With this thought in mind, this invention contemplates 35
or lock,
The set screw 15 secures the device on a stem
or bolt 18 and whereas the bolt is adapted to be rotated
by the member 13 it would be ditiicult for a small child
to turn the device sufficiently to open a door.
It will be understood that modifications, within the
scope of the appended claim, may be made in the design
and arrangement of the parts without departing from
less the complete knob is gripped by hand.
the spirit of the invention.
The object of this invention is, therefore, to provide a
What is claimed is:
door knob cover that is formed of such material that 40
Means for preventing rotation of a door knob by
friction-gripping contact between the cover and knob is
small children, comprising Aa body of mesh material, said
not obtained without completely gripping the cover and
body having its ends open, a pair of cords threaded
knob from all sides.
through said mesh material, said cords being arranged
Another object of the invention is to provide a door
adjacent «the ends of the body of mesh material, one of
knob cover that readily slides around the knob, particu
45 said cords adapted tov draw the material together to close
larly when gripped by small children, in which the cover
the outer end thereof, the other of said cords adapted
is adapted to be used on conventional knobs now in use.
to draw the material together over the stem of the door
A further object of the invention is to provide a cover
knob over which the material is positioned so that by
adapted to be positioned over a door knob to prevent the
untying
the outer cord, the cover can be pushed back to
door knob being turned by small children in which the
50 expose the door knob and whereby the innermost cord
cover is of a simple and economical construction.
will still support the cover, and whereby when a child
With these and other objects and advantages 'in view,
attempts to open the door by turning the knob with the
the invention embodies a comparatively short length of
cover
on the knob, the cover will slip around the knob,
tubular material, such as a mesh which is capable of
being molded, twisted paper, and hard cord in which tie 55 but when an adult firmly grips the cover and applies
suñìcient manual pressure thereto, the door knob can
strings are threaded through both ends to facilitate gather
be
turned.
ing and tying both ends of `the material with the material
placed over a door knob.
References Cited in the ñle of this patent
Other features and advantages of the invention w-ill
UNITED STATES PATENTS
appear from the following description taken in connec
a cover for a door knob in which the cover is formed of
material that readily slides or slips around the knob un
60
tion with the drawings, wherein:
Figure 1 is a side elevational view showing the im
proved door knob cover with one end of the cover
gathered and tied with a cord or the like and with the
opposite end open to facilitate positioning the cover on
65
a door knob.
1,337,859
Tipton ______________ __ Apr. 20, 1920
1,633,988
2,035,384
2,557,517
2,587,285
2,610,877
Jones ______________ __ June
Hinchlili ____________ __ Mar.
Scruggs ____________ __ lune
Broscoe ____________ __ Feb.
Weaver ____________ __ Sept.
Figure 2 is a perspective View illustrating the use of the
improved door cover and showing the cover positloned
FOREIGN PATENTS
28,
24,
19,
26,
16,
1927
1936
1951
1952
1952
‘
0
832,556
~France _____________ .__ Sept. 29, 1938
Figure 3 is a side elevational view illustrating "a modi
1,009,624
France ..... -_v,-,--..-.. Mar. 12,1952
on a door knob.
_
_
ì