Improvements in Nut Locks.
Year: 1899

page_text: Date of Application, 6th Mar., 1899- Accepted, 8th Apr.,
1899
COMPLETE SPECIFICATION.
Improvements in Nut Locks.
I, GEORGE HENRY LAYNG, Railway Agent, of the Village of Havelock, in the
County of Peterborough, in the Province of Ontario, Canada, 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:-
My invention relates to improvements in nut locks and the object of the
invention is to design a very simple device whereby a nut may not only be
securely locked on the bolt, but such locking device removed very readily when
desired and it consists essentially of a plate designed to fit inside the nut and
through which the bolt extends, such plate being provided with an inturned
lip at one edge in which fits a wedge-shaped key, which abutts the interior end
of the lip and the side of the nut, thereby locking such nut in position, the parts
being otherwise constructed and arranged in detail as hereinafter more particu-
larly explained.
Fig. 1, is a perspective view showing my improved nut lock applied to a fish-
plate of a rail.
Fig. 2, is a perspective view showing my nut lock applied to a plate on a
switch rail or frog.
In the drawings like letters of reference indicate corresponding parts in each
figure.
A is the plate placed against the fish-plate B and through which the bolt C
extends. D is the nut on the bolt. a is a rectangularly turned lip extending
from the top of the plate A to near the bottom leaving preferably a recess a¹
as indicated. The lip is preferably arranged at an incline.
E is a wedge-shaped key provided with a lifting lip e at the top. Such key
is designed to extend down between the lip a and the plate at one side and
abutt the nut D at the opposite side.
It will be seen that by inserting a sharp instrument underneath the bottom
of the key E it may be readily raised sufficiently, so that the lip e may be
grasped and the key removed whereupon the nut may be readily turned off the
bolt.
In Fig. 2, in which I show two switch rails or frog and a projecting block B',
which is held from turning by the flange of the rail, it will be noticed that I
turn the plate A so as to form a supplemental lip a², which extends around one
edge of the block B₁ and thereby prevents the plate from turning.
Of course it is necessary in both forms of plate shown, that the plate A should
not turn and in Fig. 1, such plate is prevented from turning by abutting the
bottom flange 6 of the fish-plate.
Where there are several bolts extending through the plate A of course it does
not matter if one of the edges abutt any fixed portion or not as necessarily the
bolts themselves will hold the plate from turning.
It is of course always necessary that one edge of the key should abutt the nut
and the opposite edge abutt the inner end of the lip to prevent the bolt from
turning

page_text: In cases where my nut lock is applied to secure bolts from turning where
wooden parts are bolted together and there is no projecting flange which the
plate may abutt I would preferably use teats, spicular projections or lips stamped
or otherwise formed out of the plate to prevent such plate from turning and
thus provide for effectual locking.
In cases also where there are no projections against which the plate may abutt
when my locking device is used in connection with fastening metal parts together
a slight recess may be made under the plate into which a spicular projection,
teat or lip formed in the plate, will fit.
It may also be stated that I may form the key a thicker at the bottom than
at the top and necessarily the space between the lip and the plate at the bottom
greater than it is at the top.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is;-
-
1. A nut lock comprising a plate designed to fit to the inside of the nut and
through which the bolt extends, a retaining lip at one edge of the plate and
a key designed to fit within the lip and abutt the edge of the nut and inner side
of the lip as and for the purpose specified.
2. A nut lock comprising a plate designed to fit to the inside of the nut and
through which the bolt extends, a retaining lip at one edge of the plate inclined
so as to be closer to the nut at the bottom and a wedge-shaped key designed to
fit within the lip and abutt the edge of the nut and inner side of the lip as and
for the purpose specified.
3. A nut lock comprising a plate designed to fit to the inside of the nut and
through which the bolt extends, a retaining lip at one edge of the plate and a
key designed to fit within the lip and abutt the edge of the nut and inner side
of the lip, and having a lifting lip at the top of the key as and for the purpose
specified.
4. A nut lock comprising a plate designed to fit to the inside of the nut and
through which the bolt extends, a retaining lip at one edge of the plate shorter
than such edge, a recess cut out of the plate beneath the lip and a key designed
to fit within the lip and abutt the edge of the nut and inner side of the lip as
and for the purpose specified.
5. A nut lock comprising a plate designed to fit to the inside of the nut and
through which the bolt extends, a retaining lip at one edge of the plate, a key
designed to fit within the lip and abutt the edge of the nut and inner side of
the lip and means such as an inwardly projecting lip to prevent the plate from
turning as and for the purpose specified.
Dated the 6th day of March 1899
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant,