Improvements in or relating to Nut-locking Devices.
Year: 1895

page_text: Date of Application, 29th May, 1895
Complete Specification Left, 28th Feb., 1896-Accepted, 29th May, 1896
PROVISIONAL SPECIFICATION.
Improvements in or relating to Nut-locking Devices.
FRIEDRICH WOERNLE of Stuttgart, Militairstrasse 26 in Germany, Merchant.
I do hereby declare the nature of this invention to be as follows:-
The object of my invention is to prevent nuts from unscrewing or becoming loose
through jar or vibration to which it is subjected specially by railway fish-plates or
other machinery. One way of carrying out my invention is as follows, at railway
fish-plates I place between the nuts and the fish-plates which serve for its bearing
or fulcrum and through which passes the bolt or the screw rod upon which the nut
is screwed, a metal rod preferably square shaped, the same is twisted on both
extremities in the form of two spiral spring rings, connected between themselves
with the middle bar or rod, the two spiral ring holes are in respect of size and
distance of each other in accordance with the size and distance of the fish-plate
bolts, each extremity of the spiral ring is open and sufficiently enlarged to look
through from under the nut like an ordinary washer, in this projecting part of the
ring one, or more lips are cut in and rised upwards, so that by screwing down the
out upon the spring ring the mentioned lip or lips are pressed down by the edges of
the nut, but as soon as one of the flat sides of the nut comes in the same line with
the lip, the same springs up and prevents the unscrewing of the nut; at the same
time the entire spring ring forms a constant pressure under the nut which it tightens
with the fish-plates and rails.
Although the invention has been described in connection with metal spring rods
at the extremities of which lips are cut or punched in and prevent the nut from
unscrewing, yet a metal plate may be employed with one or more holes and lips or
tongues punched out in the plate on its edges and preventing in the same way as
above-mentioned the unscrewing of the nuts.
Dand his 07th day of 1005
Improvements in or relating to Nut-locking Devices.
I FRIEDRICH WOERNLE, Merchant, of 26 Militairstrasse, Stuttgart, in the
Empire of Germany, 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 :-
The object of my invention is to prevent nuts from unscrewing or becoming loose
through jar or vibration to which they are subjected, especially when applied to
railway fish plates or other machinery.
Referring to the accompanying drawings:
Fig. 1 is a plan of a metal rod twisted at both extremities in the form of two
spiral spring rings.
Fii on elevation of the come

page_text: Fig. 3 is a plan of a metal rod sufficiently enlarged at both ends to form an
ordinary washer and having projecting upset lips or elastic tongues cut in them.
Fig. 4 is an elevation of Fig. 3.
Fig. 5 is a plan of the nut locking device punched or cut out of a metal plate in
which elastic lips or tongues are cut as in Figs. 3 and 4.
Fig. 6 is an elevation of Fig. 5.
Referring more particularly to Figs. 1, 2, I place between the nuts and the fish
plate or the like which serves for their bearing, and through which the bolts upon
which the nuts are screwed pass, a metal rod a preferably of square cross section
and bent at both ends to form two spring rings 6 the holes c in which are, in respect.
of size and distance apart of each other, in accordance with the size and distance
apart of the fish plate bolts.
Referring to Figs. 3 and 4, each extremity of the spiral ring b is open and
sufficiently enlarged to project from under the nut. In these projecting parts of the
enlarged rings one or more lips or tongues d are cut and set up so that by screwing
down the nut upon the spring ring the before mentioned lip or lips are pressed down
by the edges of the nut; but as soon as one of the flat sides of the nut come in the
same line with a lip the latter springs up and prevents the unscrewing of the nut,
while at the same time the entire spring ring exerts a constant pressure against the
nut which it tightens.
Although the invention has been described in connection with metal spring rods
at the extremities of which lips are cut which engage with the flat sides of the nut
to prevent its unscrewing yet, a metal plate e shown in Figs. 5, may be employed
with one or more holes c and hips or tongues d cut or punched out in the plate
which, on screwing down the nut, spring up beside one of the flat sides of the nut
against which it bears to prevent its unscrewing.
A single lip or tongue, or several, may be used in order to increase the number
of stops, each tongue acting separately and successively so that with a hexagonal
nut and two tongues for example, the nut may be screwed up and stopped or fixed
at each twelfth part of its circumference.
The lips or tongues should be cut out of the flat or flattened spring ring, so that
their inner edges come even with the side of the nut which presses against it to
form an obstacle to its unscrewing.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is :
1. The use of a metal bar or rod bent at both ends into a spiral spring ring and
enlarged so as to project beyond the nut in the enlargement of which lips or tongues
are cut preventing the unscrewing of the nut which it tightens up substantially
as described.
2. A metal plate in which lips or tongues are cut to prevent the unscrewing of
the nut substantially as described.
3. The improvements in nut locking devices arranged, constructed and operating
substantially as described in the foregoing Specification, and illustrated in the
drawings hereunto annexed.
Dated this 28th day of February 1896.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.