Improved Means for Locking Nuts, Washers, and the like upon their Bolts.
Year: 1892

page_text: Date of Application, 17th May, 1892
Complete Specification Left, 8th June, 1892-Accepted, 23rd July, 1892.
PROVISIONAL SPECIFICATION.
Improved Means for Locking Nuts, Washers, and the like upon
their Bolts.
We ERNEST MAxMillan BiebER of Surry Hills Sydney in the Colony of
New South Wales, Mining Engineer and FRANK LACROIX GARDNER of Bond
Street Sydney aforesaid Gentleman do hereby declare the nature of this invention
to be as follows:-
This invention relates to an improved nut-lock or contrivances for fastening nuts.
on screw bolts to prevent such nuts becoming loose: through janring on tremulous.
motion of the subject in or on which the bolts may be used and it has been specially
devised in order to produce such of a cheap easily adjustable and effective con-
struction and arrangement. While: especially suitable for use for nuts on screw
bolts, this nut-lock is applicable as a lock for washers or loose heads on plain bolts.
or trunnells or other fastenings.
"
"
To form this improved nut-lock a small hole is bored through the bolt as near
the end as practicable and then at right angles to this hole and through the centre
of the bolt a narrow cut or slot is made dividing the bolt longitudinally within the
range of the "screwing up" of the nut and slightly below the extreme bight
position of the outside of the nut. A small pin is then made to fit through the
bored hole, and forms the top of the cut or slot and the point of resistance, whence
pressure is obtained to keep the nut in place; after the nut is tightly screwed to
the position in which it is desired to lock it little cuts or scores are made by means
of a thin chisel or hack saw at both sides of its outside face in the inside periphery
of the nut and in juxtaposition with the ends of cut or slot through the bolt.
A peculiarly constructed key then completes the lock such key having convex.
and concave peripheries formed of parts of circles set eccentrically and of a
thickness to easily pass. through the cut or slot through the bolt and fit the cuts or
scores in the nut and so shaped as to be capable of being driven hard between the
through peg or pin in the bored hole of bolt and the cuts or scores in the nut and
to hold them together as if it were a pin both nut and bolt. The small end of key
is then bent around the bolt to prevent it working or slipping backwards.
Dated this Fifth day of April One thousand eight hundred and ninety-two.
COMPLETE SPECIFICATION.
Improved Means for Locking Nuts, Washers, and the like upon
their Bolts.
We ERNEST MAXMILLAN BIEBER of Surry Hills Sydney in the Colony of
New South Wales, Mining Engineer and FRANK LACROIX GARDNER of Bond.
Street Sydney aforesaid Gentleman 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 an improved nut-lock or contrivances for fastening nuts
on screw bolts to prevent such nuts becoming loose through jarring or tremulous'
motion of the subject in or on which the bolt may be used and it has been specially
devised in order to produce such of a cheap easily adjustible and effective con-
struction and arrangement. While especially suitable for use for nuts on screw

page_text: bolts this nut-lock is applicable as a lock for washers or loose heads on plain bolts
or trunnells or other fastenings.
"
22
To form this improved nut-lock a small hole is bored through the bolt as near
the end as practicable and then at right angles to this hole and through the centre
of the bolt a narrow cut or slot is made dividing the bolt longitudinally within the
range of the "screwing up of the nut and slightly below the extreme "tight'
position of the outside of the nut. A small pin is then made to fit through the
bored hole and forms the top of the cut or slot and the point of resistance whence
pressure is obtained to keep the nut in place. After the nut is tightly screwed to
the position in which it is desired to lock it, little cuts.or scores are made by means
of a thin chisel or a hacksaw at both sides of its outside face in the inside.periphery
of the nut and in juxtaposition with the ends of cut or slot through the bolt. A
peculiarly constructed key then completes the lock such key having convex and
concave peripheries formed of parts of circles set eccentrically and of a thickness
to easily pass through the cut or slot through the bolt and fit the cuts or scores in
the nut and so shaped as to be capable of being driven hard between the through
peg or pin in the bored hole of bolt and the cuts or scores in the nut and to hold
them together as if it were a pin both nut and bolt. The small end of key to
prevent it working or slipping backwards is then bent around the hole.
But in order that this invention may be clearly understood reference will now be
made to the drawings herewith in which:
Figure 1 is a sectional elevation of a nut fastened by this improved nut-lock.
Figure 2 is a plan and Figure 3 a perspective view of same while
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J
Figure 4 is an elevation of the nut-lock used on the head of a stay or trunnel or
such like..
Figure 5 is a side view an edge view of a key with a split end.
Through the bolt A near its end a hole is bored to carry pin B and at right
angles to this hole cut or slot C is made in the bolt for some little distance from
the point. Now when nut D is screwed up tightly pin B which is an easy or
comfortable fit in the bored hole is put in place and its central part forms a head
or top within the slot or cut C. A cross cut or other chisel or a hack saw is then
taken and notches or cuts or scores D' made in the inside edge of the top of the
nut in juxtaposition with the slot C. The key E having concave and convex
peripheries formed of circles or curves set eccentrically to one another is then
inserted in slot C with its convex edge resting in notches or scores D' in the nut
face and being then hammered or driven at its broader end acts as a wedge between
pin B and nut D tightly fastening said nut from turning on the bolt A which holds
the key. E. The key É if it be a solid one as is preferably for cheapness is then
clipped off at one or both ends if necessary and the smaller end bent around the
bolt as shown in Figures 1, 2 and 4 or if it be split as in Figure 5 it is fastened in
the usual manner by widening the split. Should it be desired to release the nut-
lock the key end may be straightened and the key E driven backwards from its
place in the slot C after which the pin B may be withdrawn or if from any cause
it be difficult to loosen the key E the pin B may be driven out by means of a
"drift" which will pass through the hole in the bolt end.
In the modification shown in Figure 4 the loose washer or head D' on the smooth
stay pin or trunnel A' is substituted for the nut D on bolt A but all the other
parts are identical with those described save that the notches or scores D' may or
may not be dispensed with.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed we declare that what we
claim is :-
First. An improved nut-lock consisting essentially of a slotted or split bolt end
having across its slot or split a pin (preferably removable) and; a key adapted to
take in and through said slot or cut under said pin and into the inner peripheral
edges of the bolt nut substantially as herein described and explained...

page_text: Second. In a nut-lock of the class set forth the combination and arrangement
with a bolt end A having slot C therein and a pin B set across said slot, of a
nut D with notches or scores D¹ on its inner peripheral edge and a peripherally
curved key E adapted to take in slot C and to be locked against withdrawal
substantially as herein described and explained and as illustrated in the drawings.
Third. In a nut-lock of the class set forth the combination and arrangement with
bolt A and nut D having pin B across slot C, of a key E having concave and
Convex peripheries formed of circles or curves set eccentrically to one another and
whether or not having a split end substantially as herein described and explained
and as illustrated in the drawing.
Fourth. In a nut-lock of the class set forth the combination and arrangement
with stay pin or trunnel A' and washer or head D' of pin B slot C and key E
substantially as herein described and explained and as illustrated in the drawing.
Dated this Second day of May One thousand eight hundred and ninety-two.
E. G. BRISSENDEN.
ALFRED Chapple.
ERNEST BIEBER.
FRANK L. GARDNER.