Year: 1885

page_text: We, ANDREW SAMUEL GOODRICH, residing at Clifton in the county of Richmond
and State of New York, and OSCAR FISHER SHAW, residing at 79, Cedar Street,
in the City, County and State of New York, all in the United States of America,
gentlemen, 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:-
This invention relates to that class of nut locks that are provided with a key
made to engage with the thread of the bolt and it consists in certain improvements
in the construction of the same which will be hereinafter fully described and
particularly pointed out in the claims.
In the accompanying drawings:
Fig. 1 is a perspective of an ordinary bolt and nut provided with the
improvement.
Fig. 2 is a side view of the same with the nut and a portion of the bolt in
section.
Fig. 3 is a similar figure showing a modification of my invention.
Similar letters refer to similar parts throughout the several views.
A, represents an ordinary screw bolt and B, the nut thereof. To retain the
latter in position upon the bolt so that it can not be accidentally unscrewed by
the jarring of machinery or passing of railroad trains when used upon fish plates
and in other locations, a hole C, is bored into the outer face thereof obliquely but
nearly parallel to the side of the bolt A and towards the centre thereof and said
hole is preferably screw tapped.
.
D, represents a screw of any suitable metal which is made to fit in the screw
hole C. This small screw D, entering the face of the nut B at an acute angle
thereto soon comes in contact with the threads on the bolt A and more or less
indenting them holds the nut B immovably thereon. Any tendency of the nut B
to become loose or unscrewed simply wedges the sides of the small screw D against
the threads of the large bolt A and causes it to hold the parts together still tighter.
The slotted end or head of the screw D may be retained to loosen it and allow
the nut to be tightened or loosened when desired or said head may be cut off after
the nut is once set to prevent any tampering with said ṇut,

page_text: In place of the screw D an ordinary pointed pin may be driven from the face of
the nut into the hole Cand obliquely against or into the threads of the bolt.
E represents a small plug of lead or any suitable soft or easily compressed
material of somewhat smaller diameter than the hole C but of a suitable length;
this piece of lead is first inserted in the opening or screw hole C and then the
screw D pointed at the end; and when the latter is forced against the lead this
soft plug fills any space that may be between the screw threaded hole C and the
thread of the bolt A and retain the nut firmly upon said bolt.
We are aware that screws or pins have been used to hold nuts in position upon
bolts. but so far as we are aware they have been inserted either in the end of the
bolt or on the side of the nut nearly parallel with its face and were easily loosened
by jarring them but with a pin or screw inserted obliquely into the face of the
nut the screw D acts as an acute wedge as well as a key and produces a simple
and reliable fastening for the nut.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is
1. In combination with a nut and bolt a pin or screw inserted into the nut
obliquely through the face of said nut adjoining and nearly parallel with the side
of the bolt, substanatially as and for the purpose described.
2. The combination of a bolt, a nut having its outer face provided with a
perforation C made obliquele therein adjoining its bolt receiving central opening
and a soft metal plug inserted within the oblique perforation C with a pin or
screw substantially as and for the purpose described.
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