Year: 1899

page_text: Date of Application, 17th Jan., 1899-Accepted, 18th Mar., 1899
I, HARRY VALENTINE PADFIELD, of 1014, N. 18th Street, of the City of St. Louis,
State of Missouri, U.S.A., Gentleman, do hereby declare the nature of this invention,
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
Reference being made to the accompanying drawing in which:
Fig. 1 is a plan of a nut lock embodying my invention.
Fig. 2 is a plan showing one feature omitted.
Fig. 3 is an edge view as indicated in Fig. 1.
Fig. 4 is an edge view as indicated in Fig. 2.
My improved nut lock consists of the plate 5, having the central
opening 6 to receive a bolt, and having the slit intersecting a
line 8 drawn radially from the center of the opening 6 and having the slit 9
as far from the line 8 as the size of the opening 6 will permit, and intersecting
the slit 7 at right angles. It is not necessary that the inner end of the slit 7 stop
exactly on the line 8, but it must run to the outer edge of the plate.
The tongues 10 and 11 are bent slightly upwardly on the line 8, and the point 12
of the tongue 11 is bent downward as shown in Figs. 1 and 3, if the nut lock is
to be used against wood. The bending of the tongue may be omitted when its
functions is not desired.
The nut lock is placed upon a bolt under the nut like a washer. If it is used
against wood the point 12 will be pressed into the wood. The corners of the nut
will slip over the tongue 10 when it is being screwed down, but said tongue will
spring up beside the nut and prevent the nut from unscrewing. The nut may be
removed by applying sufficient power to straighten out the point 12.
When the nut lock is to be used against metal the bending of the point 12 is
omitted as shown in Figs. 2 and 4. Then there should be a shoulder upon the metal
to engage a shoulder upon the nut lock. The plate 5 may be of any desired out-
lines, such as circular, square, octagon or hexagon. The nut always rests upon the
tongue 11 and the elasticity of said tongue provides for the expansion and con-
traction of the material.
I am aware that it is not broadly new to make a nut lock in the form of a spring
washer with a tongue to engage the nut. but the specific construction which I
have shown and described is new and possesses great advantages over the old con-
structions.
Having now particularly described and ascertained the nature of this said
invention, and in what manner the same is to be performed. I declare that what I
claim is:-
|
1. A nut lock consisting of a plate having a central opening 6. and having the
slit 7 intersecting the radial line at right angles, and having the slit 9 extending from
the opening 6 and intersecting the slit 7 at right angles, the tongue 10 being bent
slightly unwardly substantially as specified

page_text: 2. A nut lock consisting of a plate having the central opening 6, and having
the slit 7 intersecting the radial line at right angles, and having the slit 9 extend-
ing from the opening and intersecting the slit 7 at right angles, the tongues 10
and 11 being bent slightly upwardly substantially as specified.
3. A nut lock consisting of a plate, having a central opening 6, and having the
slit 7 intersecting a radial line at right angles, and having the slit 9 extending
from the opening 6 and intersecting the slit 7 at right angles, the tongue 10
being bent slightly upwardly and the point 12 being bent downwardly, substan-
tially as specified.
T
1
001
1900