IMPROVEMENTS IN NUT-LOCKS to be as follows:-
Year: 1884

page_text: I WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, and Co, Patent
Agents, Southampton Buildings in the County of Middlesex do hereby declare the
nature of my invention for "IMPROVEMENTS IN NUT-LOCKS to be as follows:-
+
"
My invention relates to nut-locks and comprises the improvements hereinafter
set forth.
In carrying my said invention into practice I provide a bolt in which is formed
a longitudinal groove, and a nut in the lower face of which are formed a series of
grooves or notches. These grooves or notches radiate towards the centre or are,
arranged obliquely and the said notches extend over the entire thickness of the
nut between its inner circumference and its exterior surface, or over only a portion
thereof. In the latter case a neck or projecting ring is formed on the nut.
I also provide a washer which has at one point in its inner circumference a
projection capable of sliding in the groove formed in the said bolt. This washer is
split in the direction of the grooves or notches in the nut.
One end of the said washer is then bent upward so that it will enter one or.
other of the grooves or notches in the nut, and will act like a spring. The said
washer is either of uniform thickness or its thickness is diminished towards the
end forming the spring.
When the nut is made with a neck or projecting ring the washer must have a
notch or recess in the portion which acts as a spring so that this portion can enter
the notches or grooves in the nut without abutting against the said neck or
projecting ring. The plane or curved, surfaces of the said grooves or notches meet
at more or less acute angles.
According to a modification of my invention the washer has a straight groove in
which a spring is placed, which spring is provided with a shoulder to prevent its
leaving the said groove when the nut is screwed down. The upper portion of the
said spring extends into the notches or grooves of the nut in the safe manner as
the raised or spring portion of the washer above described.
HASELTINE, LAKE & Co.,
For the Applicant.

page_text: COMPLETE SPECIFICATION.
I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake and C, Patent
Agents, Southampton Buildings in the County of Middlesex do hereby declare the
nature of, my invention for "IMPROVEMENTS 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:-
My invention relates, to, nut-locks and comprises the improvements hereinafter
set forth.
In carrying my said invention into practice I.provide a bolt in which is formed
a longitudinal groove, and a nut in the lower face of which are formed a series of
grooves or notches. These grooves or notches radiate towards the centre or are
arranged obliquely and the said notches extend over the entire thickness of tho
nut between its inner circumference and its exterior surface, or over only a portion
thereof. In the latter case a neck or projecting ring is formed on the nut..
I also provide a washer which has at one point in its inner circumference a
projection capable of sliding in the groove formed in the said bolt. This washer
is split in the direction of the grooves or notches in the nut.
One end of the said washer is then bent upward so that it will enter one or
other of the grooves or notches in the nut, and will act like a spring. The said
washer is either of uniform thickness or its thickness is diminished towards the
end forming the spring.
When the nut is made with a neck or projecting ring the washer must have a
notch or recess in the portion which acts as a spring so that this portion can enter
the notches or grooves in the nut without abutting against the said neck or
projecting ring. The plane or curved surfaces of the said grooves or notches meet
at more or less acute angles.
According to a modification of any invention the washer has a straight groove in
which a spring is placed, which spring is provided with a shoulder to prevent its
leaving the said groove when the nut is screwed down. The upper portion of the
said spring extends into the notches or grooves of the nut in the same manner as
the raised or spring portion of the washer above described.
Figs. 1 and 2 of the accompanying drawings are side views of bolt, nut and
washer according to this invention, shewn in conjunction. Figs. 3 and 4 are plans
of the under face and elevations of the nut, Fig. 5 is a side view and plan of the
washer, Fig. 5a a plan of a modified form of the washer, Fig. 6 is a side view and
plan of the washer arranged to receive a separate spring of which Fig. 7 shews a
plan and side view. The bolt a is slotted longitudinally at b to receive the
inwardly projecting tongue k of the washer g so that the washer cannot turn round
on the bolt. The under face of the nut is radially notched so as to present a set
of ratchet teeth c which, as shewn in Fig. 3,.may extend only over a certain width
from the outside m to the shoulder n of a boss o formed on the nut, or, as shewn iu
Fig. 4, may extend from the outside p to the inside q. The washer g is at one
part of its circumference cut across and the metal at one side of the cut is turned
F

page_text: upwards so as to constitute a spring pawl i that can engage with the teeth c of the
nut. When the nut is made with a boss o, a portion r of the width of the pawl i
is cut out as shewn in Fig. 5 to clear this boss. As shewn in Figs. 2, 6 and 7, the
washer g is not cut but only grooved across at s to receive a separate spring v
which is made with a shoulder u to prevent it from being displaced.
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
The construction of nut-lock wherein, ratchet teeth formed on the underface of
a nut are engaged by a spring pawl projecting up from a washer that is prevented
from turning round the bolt, substantially as herein described and illustrated by
the drawings.