IMPROVE- MENTS IN NUT LOCKS
Year: 1884

page_text: DAECIFICATION.
I, WILLIAM PHILLIPS THOMPSON, of the Liverpool and London Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, in the County of Lancaster,
Civil Engineer do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN NUT LOCKS," and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :—
Reference being had to the accompanying Drawing in which :-
:-
Fig. 1 is a perspective view of a section of a railway rail, with a fish-plate, two
bolts and their nuts and the nut lock applied thereto.
Fig. 2 is a view of the nut lock being applied to the nuts on a fish-plate.
Fig. 3 is a view of the nut lock.
The object of this Invention is to provide a strong and durable but inexpensive
device of such weight of material that it will not soon rust out or be destroyed by
exposure to the weather, and of such structure as adapted to resist severe shocks,
sudden strain or other rough usage and which will permanently lock and hold the
nuts to which it is applied in position on their bolts, and which device is capable
of being removed and reapplied without change in or injury to its structure or
functional capability.
This Invention and how these objects are attained are explained herein and by
reference to the accompanying Drawings which are hereby made a part of this
Specification. Like parts are represented by the same reference letters in the
several views: Referring to the Drawings:
A represents the nut lock which is made of heavy rigid inelastic iron or other
suitable material and is provided at one end with a slot B for the reception of the
bolt, the jaws C adapted to pass beneath the nut and on the respective sides of
such bolt and the shoulder D formed at right angles to the face of the plate, which
shoulder is adapted to come into contact with and engage the adjacent edge of
the nut; the nut lock A at its other end is preferably cut off diagonally forming
an acute angle at E'; the length of lock is such that when being applied its end E
will partially pass by the nut G and be supported in that position upon the flange
of the rail, while the point E¹ lies against and locks the nut G as hereinafter
Dion 137

page_text: described. F and G are two nuts in position on their bolts. H is a section of
the fish-plate affixed to the railway rail I, and K is the lower flange of the rail.
The mode of applying the nut lock is as follows:
The fish plate H being placed on the rail I in the ordinary way for fastening
rails together and the bolts put in position through the rail and fish-plate, the
Dut G is put on its bolt and screwed down tightly to its place, having when in
place its edges square with the fish plate, that is as nearly vertical and horizontal
as possible; the nut F is then put on its bolt and screwed down so far that the
jaws C of the lock A will barely pass beneath it in a vertical or other position not
more than one half a turn from its seat, but so that the shoulder D will come
squarely against and engage the side of the nut F as shown in Fig. 2; the nut F is
then screwed tightly down, the lock being swung over to the right moving with
the nut, while the shoulder D remains firmly against the edge of the nut and the
jawa C ben-ath it, until the end E of the lock partially passes the nut G and
the lower edge of the lock rests against the lower flange K of the rail I or other
suitable support and the upper and outer corner E¹ of the lock is at and against
the middle of the edge of the nut G, and thereupon the nut G being unscrewed by
the part of a revolution sufficient to strike against and hold the end E of the lock
down to place; both the nuts F and G are thereby permanently locked and
cannot loosen except by first tightening the nut G with a wrench or other suitable
appliance.
Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed, I declare that what
I claim is:
1st. A nut lock consisting of a rigid non-elastic locking plate provided with slot,
jaws and shoulder at one end, the jaws being adapted to pass beneath the nut and
on the respective sides of the nut-carrying bolt, and the shoulder being adapted to
bear again-t ani engage the nut, and the other extremity being adapted to bear
against and hold in position a second nut at a distance from the first nut, whereby
both of said nuts are locked, said locking plate being capable of being removed and
reapplied either in the same place or elsewhere without change or injury to its
form or structure, substantially as and for the purpose set forth.
2nd. The non-lastic locking plate A having slot B, jaws C, shoulder D and
end E, in combination with the nuts F and G and their bolts, the fish-plate H. and
the rail I with its lower flange K, the jaws C being adapte to pass beneath the
nut F and on the re-pretive sides of the bolt which carries nut F, and the shoulder D
being adapted to bear against and engage the nut F, and the end E being adapted
to partially pass by and being supported in position by the flange K to bear
against and hold in position the nut G, all substantially as and for the purpose
specified.
Dated this 10th day of March 1884.