IMPROVEMENTS IN NUT LOCKS
Year: 1882

page_text: LETTERS PATENT to John Thomson King, of Liverpool, in the County of
Lancaster Patent Agent for an invention of IMPROVEMENTS IN NUT LOCKS.
A communication from abroad by Samuel Gissinger of the City of Pittsburgh
in the County of Allegheny and state of Pennsylvania, United States of
America.
COMPLETE SPECIFICATION filed by the said John Thomson King at the
Office of the Commissioners of Patents on the 26th April 1882.
JOHN THOMSON KING of Liverpool in the County of Lancaster, Patent Agent.
"IMPROVEMENTS IN NUT Locks." A communication from abroad by Samuel
Gissinger of the City of Pittsburgh in the County of Allegheny and State of
Pennsylvania, United States of America.
The said invention relates to Nut Locks, and it consists in devices so arranged
in relation to bolts and nuts, as to prevent the nut from becoming loose on and
dropping off the bolt. It is designed to be used on railroad rails, bridges, and
machinery subject to jarring, where bolts and nuts are used to fasten or attach the
different parts together, and the nuts are liable to become loosened or unscrewed.
I will now describe the said invention so that others skilled in the art may
manufacture and use the same.
The devices used are a leaf plate or locking dog which passes or falls between
the faces of two adjacent nuts, and a wire to which the leafplate or dog is hinged.
The ends of said wire are preferably bent around the bolts under the nuts, and act
as washers thereto.
In the drawings hereunto annexed Fig 1 is a perspective view of a rail and fish
plates held together by bolts and nuts fitted with the improved nut lock and
figs 2. 3. 4 and 5 are detail views. In all the views like letters denote the same
parts.
a represents the wire, the ends of which are bent so as to form the washers a'a'.
This wire is preferably of steel and is shaped as shown, either by hand or
machinery. Hinged to the wire a is the leaf plate or locking dog bat the upper
end of which is formed the hinge 6' through which the wire a passes. These

page_text: leaves should be of the same width as the space between adjacent nuts, and they
may be formed by cutting blanks b² from a sheet of metal, said blanks having a
projecting flange b³, which by being bent forms the hinge b¹ as shown in figure 2.
The wire a may be passed through the hinge b' before forming the washers a', or
the flange 63 may be bent around the wire a forming the hinge 61 after the
washers a¹ are formed. If desired the washers a¹ may be formed by bending the
wire around the bolts c. c. The hinge piece b' is preferably formed on one side of
the plate b instead of being on a line with the edge thereof.
My locking device is used as follows: The fish bar being placed in position and
the bolts being passed through the same and the rail, the washers a¹ a' are placed
on adjacent bolts, the wire a extending between them, sustaining the plate b.
This plate is then thrown upwards and may be pushed to one side along the wire a
out of the way, and the nuts d d are screwed onto the bolts c. c., so as to bring the
washers a¹. a. close against the fish bar, which causes the hinge b' to bear against
the same, the wire a acting as a spring. The plate b is then turned on the wire a,
down between the faces of the nuts d. d. The lower end of the plate b being bent
inward passes beneath the fish bar. The plate being between the sides of the nuts
prevents them from turning and becoming loose on the bolts. The object of
forming the hinge b¹ at the side of the edge of the plate bis to cause it to bear
against the fish bar and thereby give a certain amount of friction in moving_the_
plate b and also to keep the body of the plate-far-enough away from the-faco-of
the fish-bar-to-prevent the edges of the-plate-from passing under the nuts d. d.
-The plate may be made without the projection and the hinge be formed by
turning the entire edgo over the pintle wire a. If desired the projection b³ may
be bent back again to form a spring e (fig 5) which will hold the plate down in
place between the nuts.
The advantages of the said invention are that a perfect nut lock is formed, which
--is-simple and cheap, and cannot get out of order. It is easily placed in position
and removed therefrom.
Having now described and particularized my-said-Invention in such manner
that_others-will-be-enabled to carry the improvements into effect what I desire to
claim and secure by Letters Patent is:-
1st. A nut lock consisting of a locking plate, leaf, or dog, hinged to a wire
extending between the bolts substantially as and for the purpose specified.
2nd. A nut lock consisting of a plate, leaf, or dog, hinged to a wire the ends of
which form washers around adjacent bolts, the edges of the plate forming a check
to the sides of the nuts substantially as and for the purpose described.
3rd. A nut lock consisting of a plate having a hinge piece at the side of one
edge of the same in combination with a wire passing between two or more bolts
and forming washers around the same substantially as and for the purposo specified.
4th. A nut lock consisting of a plate hinged between the nuts, in combination
with a spring for holding it down in place, substantially as and for the purpose
specified.
In Witness Whereof I the said John Thomson King have hereunto set my
hand and sool this twenty fifth day of Annil in the weak of Our Lord one