Nut Locks.
Year: 1892

page_text: United States of America),
Date of Application (in United Kingdom), 2nd June, 1892
Complete Specification Left, 2nd June, 1892-Accepted, 9th July, 1892
COMPLETE SPECIFICATION.
Nut Locks.
I, DAVID CROCKETT TERRY, a Citizen of the United States, residing at
Abilene, in the County of Taylor, and State of Texas, Dairyman, do hereby
declare the nature of the invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
My present invention relates to improvements in means for securing nuts on
their bolts in a firm and rigid manner; and it is especially adapted for use on
railway rails in which the locking devices are subjected to severe and continual
jarring.
With these and other ends in view my invention consists in providing an ordinary
round or square washer, which is arranged beneath the nut. A locking plate
having one or more openings therein is placed over the nuts and rests in place
against the fish plate on the rail and around the aforementioned washers. The
sides of these openings are inclined in a reverse direction to the advance of the
nuts, and when the nuts have been tightened and the locking plate arranged in
position the nuts are turned back and the edges or corners thereof are forced upon
the inclined planes of the sides of the openings in said plate. These inclined planes
commence at each corner of the opening and extend backward or in a reverse
direction to the advance of the nut to the opposite corner of said opening, and the
upper surface of these inclined planes is level and may extend entirely across the
narrow sides of the openings.
To enable others to more readily understand my invention, I have illustrated
the same in the accompanying drawings as applied to a rail-joint, in which-
Figure I is a side elevation showing the locking plate in position.
Figure II is a detail view of said locking-plate.
Figure III is a sectional view on the line - of Figure I, and
Figure IV is a sectional view on the line y-y of Figure II.
Figure V is a detail view of the washer.
Referring to the drawings, in which like letters of reference denote corresponding
parts in all the figures, A designates the nuts of ordinary form and construction,
but preferably having four straight sides, as shown, and they are arranged to be
tightly screwed on the bolts a, firmly against washers B, fitted thereon. These
washers are preferably round and may be provided with studs or projections b, as
shown in Figure V, and the diameter of these washers is substantially the same as
the diameter of the nuts and they do not project beyond the sides thereof.
The locking-plate consists of a strip of hard flat-metal plate C of any desired
dimensions, and it is provided with one or more openings e, which conform to the
shape of the nuts and are somewhat larger, to enable said plate to be slipped easily
and readily over said nuts. The inner edges of these openings c are inclined on
each side thereof, as at D, and the inclines begin at each corner and extend in a
reverse direction to the advance of the nut to the other corner of each side. The

page_text: incline is very gradual, and the upper surface thereof is perfectly level transversely
across the sides.
In practice the nuts are tightened on the bolts and arranged so that the sides of
the nuts are parallel, and the locking-plate is then pressed over them. The
thickness of the washer is equal to the height of the lower end of the incline, so
that when the locking plate is in position the corners of the nut can be easily and
readily forced onto the incline. The nut is then turned backward and the corners
thereof will be forced up the incline to any point desired, where it will remain in a
firm and rigid position. In this position it is obvious that the nut can neither turn
forward or backward by any unusual or usual jarring, and will remain in this
position until released in the proper manner.
с
The incline of the edges of the openings c is greater than the pitch of the thread
of the bolt, and hence when the nut is forced up on said inclines the frictional
contact occasioned by these different angles of the thread on the bolt and inclines
on the locking plate will be materially increased and the nut firmly and rigidly
locked in place.
The washers B may be made integral with the fish-plate B' or the rails, or they
may be separate therefrom, as shown in the drawings.
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. The combination, with a nut and bolt, of a washer fitted on the bolt beneath
the nut, and a locking-plate having openings adapted to fit around said washers,
the edges of said openings being inclined rearwardly and the height of the lower
end thereof being equal to the thickness of the washer, substantially as described.
2. The combination of the bolts, the washers fitted thereon, the nut, and the
locking-plate having openings adapted to fit over the nuts and around the washers,
the edges of said openings being inclined backward, the corners of said nut being
arranged to be forced up on the inclines, substantially as described.
3. As an improved article of manufacture, a locking-plate and a nut-opening in
said plate each side of the opening being inclined from one corner of said opening
to the opposite corner, as and for the purpose specified.
Dated this 2nd day of June 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.