Improvements in Locking Nuts on Bolts used in Fastening the Fish-plates on the Rails of Railroads and for like purposes.
Year: 1891

page_text: Date of Application, 11th Apr., 1891-Accepted, 16th May, 1891
COMPLETE SPECIFICATION.
Improvements in Locking Nuts on Bolts used in Fastening the
Fish-plates on the Rails of Railroads and for like purposes.
I, LEVI HILDRETH YOUNG, of 22 Paddock Street, St. John, in the Province
of New Brunswick and Dominion of Canada, Manufacturer, do hereby declare the
nature of my invention for IMPROVEMENTS IN LOCKING NUTS ON BOLTS USED IN
FASTENING THE FISH-PLATES ON THE RAILS OF RAILROADS AND FOR LIKE
PURPOSES, 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 drawings in which:
Figure 1, shows the nut screwed up on the bolt running through the rail and
fish-plate locked by my pendulum and reversible nut lock or locker which embodies
my invention.
Fig. 2, shows the nut and pendulum and reversible nut lock or locker both
screwed on the bolt.
Fig. 3, is a plan showing the bolt (A) the nut (both square and hexagon) (B. B.),
and the pendulum and reversible nut lock or locker (C. C.).
Fig. 4 is a side elevation of a bolt (A) and nut (B) with one locker (C)
attached.
The bolt and nut to which the nut lock is applied are the same as the ordinary
ones in use, and the whole of the invention is contained in the pendulum and
reversible nut lock or locker which consists of one or two thin elongated pieces of
iron (C. C. in Figures 3 and 4 of the drawings), which for locking ordinary sized
muts (B. B) on bolts (A.) would be about one and five eighths of an inch long, one
and one eighth wide and three eighths of an inch thick each, with holes bored in
one of the ends of each piece of the size of the bolt and threaded the same as the
nut which goes on the bolt. The nut is first screwed up tight on the bolt against
the plate and then the pendulum and reversible nut lock is screwed on the bolt by
a wrench or by hand up tight against the mut. The nut is then securely locked on
the bolt by the pendulum and reversible nut lock. This is shown in Figure 1 of
the drawings which represents a nut on a fish or track bolt securely locked by the
pendulum and reversible nut lock. The nut cannot possibly become unscrewed or
work off while the pendulum and reversible mut lock is up against it on the bolt
and the pendulum and reversible nut lock cannot turn around or become unscrewed
as its gravity consequent on its elongated shape and the threaded hole by which it
is screwed on the bolt being in one end of it and the necessarily different angles
assumed by its two pieces when screwed up tight will prevent it. When the two
locks are used they can be placed at any position to allow the main nut to slack
back so as to allow for the expansion and contraction of the rails and plates. When
one piece only of the nut lock is screwed on, it will either remain stationary or
move like the pendulum of a clock. No amount of shaking or vibration would
cause it to turn entirely around on the bolt. A car passing over and along railway
rails might cause it to move slightly as a pendulum but it would soon assume again
a perpendicular position. If when so screwed on the bolt up tight against the nut,
it were left in a perpendicular position with the non-punctured end downward, it
would remain entirely stationary except as to a slight pendulum like motion that
would not cause the nut to move at all and if when so screwed up the said non-
punctured end was at any angle to the right of the perpendicular it could only
inove, if it moved at all, downward until it became plumb which would have the
effect of tightening the nut on the bolt and if when so screwed up said non-
punctured end was at any angle to the left of the perpendicular, its maximum
movement would be only one half a revolution and this could be obviated by

page_text: reversing the lock which would cause it to fall at an angle to the right of the
perpendicular as before but when both pieces of the nut fock are so screwed up
on the bolt, the nut is securely locked at whatever angle the pieces of the lock
may be left at and the nut when thus screwed on will so strengthen the thread of
the bolt that the bolt will break before the thread will strip. It is thus a complete
and perfect nut lock and will absolutely prevent the nuts from coming off of any bolts
placed in a horizontal position as shown in Figure 2 of the drawings and such as
track bolts are. This nut lock can be put on the bolt at any time and as it is
screwed on the bolt after the nut it is the simplest and most complete of any inven-
tion or contrivance of the kind and besides will add seventy five per cent. to the
strength of the thread of the bolt.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The above described pendulum and reversible nut or nuts used for locking nuts
on bolts substantially as and for the purposes herein before described, set forth and
illustrated.
F. W. BARKER,
Applicant's Agent.