Year: 1885

page_text: I, OLIVER IMRAY, of N° 28. Southampton Buildings, Chancery Lane in the
County of Middlesex, Fellow of the Institute of Patent Agents, do hereby declare
the nature of this invention to be as follows:-
This invention relates to a method of locking nuts, such for example as are used
to secure fish plates of railways, so as to prevent them from becoming loose by
vibration or otherwise. For this purpose, assuming that the method is applied to
lock two nuts of a fish plate for rails, a washer plate is placed against the fish plate,,
this washer plate having two holes or slots through which pass the two bolts. The
nuts are screwed down on this washer plate to such an attitude that they present.
flat sides towards each other. Then between the two nuts is placed another plate,
which may be termed a locking plate having its two ends fitting against the flat
sides of the two nuts so as to prevent those nuts from turning. The locking plate,.
if it is thin, has its ends turned forward so as to form flanges bearing against the
sides of the nuts, but a thicker locking plate without flanged ends may be used. In
order to secure the locking plate to the washer plate, a piece of bent hoop is passed
through vertical slots made in the two plates, its ends projecting beyond the face
of the locking plate, and when the locking plate is put in position, these ends are
bent over the face of the locking plate. When the nuts have to be screwed or.
unscrewed, the ends of the hoop are first straightened out, and then the locking
plate can be removed allowing the nuts to be turned. The locking plate instead of
being held as described to the washer plate, may have its upper edge hinged to the
washer plate, so that it hangs by gravity between the nuts, which can only be
turned when the locking plate is held up in a horizontal position. Or the locking
plate may have at its upper edge a backwardly projecting dovetail lip which enters
a corresponding recess in the upper edge of the washer plate. In this case, the
locking plate, in order to be removed, must be raised sufficiently to disengage its
lip from the recess. When the locking plate is hinged to or engaged with the
washer plate, it may also be secured by the bent hoop as in the other cases, the
slots for the hoop being elongated to allow for the upward movement of the locking
plate when it is to be removed. In cases where only one nut has to be locked,
the washer plate is provided with a steady pin to keep it in position, and the
locking plate is held on it by the bent hoop as described above.
Dated this 21st day of Santamba- 1005
ABEL & IMRAY,
Agents for the Applicant.
ว

page_text: I, OLIVER IMRAY of N° 28 Southampton Buildings Chancery Lane in the
County of Middlesex, Fellow of the Institute of Patent Agents 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 a method of locking nuts, such for example as are used
to secure fish plates of railways, so as to prevent them from becoming loose by
vibration or otherwise. For this. purpose, assuming that the method is applied to
lock two nuts of a fish plate for rails, a washer plate is placed against the fish plate,
this washer plate having two holes or slots through which pass the two bolts. The
nuts are screwed down on this washer plate to such an attitude that they present
flat sides towards each other. Then between the two nuts is placed another plate
which may be termed a locking plate, having its two ends fitting against the sides
of the two nuts, so as to prevent those nuts from turning. The locking plate, if it
is thin, may have its ends turned forward so as to form flanges bearing against the
sides of the nuts, but a thicker locking plate without flanged ends may be used. In
order to secure the locking plate to the washer plate, a split key which may be a
piece of bent hoop is passed through vertical slots made in the two plates, its ends
projecting beyond the face of the locking plate, and when the locking plate is put
in position, these ends are bent over the face of the locking plate. When the nuts
have to be screwed or unscrewed, the ends of the hoop are first straightened out, and
then the locking plate can be removed allowing the nuts to be turned. The locking
plate instead of being held as described to the washer plate, may have its upper
edge hinged to the washer plate, so that it hangs by gravity between the nuts,
which can only be turned when the locking plate is held up in a horizontal
position. Or the locking plate may have at its upper edge a backwardly projecting
dovetail lip which enters a corresponding recess in the upper edge of the washer
plate. In this case the locking plate, in order to be removed, must be raised
sufficiently to disengage its lip from the recess. When the locking plate is hinged
to or engaged with the washer. plate, it may also be secured by the split key or
bent hoop as in the other cases, the slots for the hoop being elongated to allow for
the upward movement of the locking plate when it is to be removed. In cases
where only one nut has to be locked, the washer plate is provided with a steady pin
to keep it in position, and the locking plate is held on it by the key or hoop as
described above.
The accompanying drawings shew various ways in which locking plates such as
are above referred to may be applied according to this invention. In Fig. 1, which
is a side elevation, and Fig. 2 a transverse section, shewing the locking of two
nuts I of a fish plate G for rails, the locking plate B is hinged to the upper edge of
a washer plate A so that it hangs between the nuts and prevents them from
turning. On lifting the locking plate as indicated by the dotted lines D, the nuts
can be turned.
As shewn in the perspective view Fig. 3 and sectional plan Fig. 4 the locking
plate B is comparatively thin and has its ends bent at right angles so as to stand

page_text: forwards as flanges against the sides of the nuts preventing them from turning.
The plate B is held to the washer A by a bent piece of hoop J the ends of which
are passed through a slot in A and a corresponding slot in B and then bent
backwards like those of a paper fastener.
Fig. 5 is a perspective view and Fig. 6 a sectional plan shewing a locking plate B
applied to a single nut? In this case the washer plate A is prevented from turning
by a steady-pin or dowel C. Figs. 7 and 9 are elevations and Figs. 8 and 10 are
sectional plans shewing locking plates B held by fasteners J, the plates B being
themselves sufficiently thick to hold the nuts without requiring their ends to be
bent as in Figs. 3 and 4. In the arrangement shewn by Figs. 9 and 10 and Fig. 11
which is a transverse section the upper edge of the locking plate B is made to
engage as a dovetail at E with the upper edge of the washer plate A, and the slot
in B through which the fastener J passes is deepened sufficiently to allow of the
plate B being lifted a little to disengage the dovetail.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. The method, substantially as herein described of locking a nut by jointing or
fastening to a washer plate held under the nut a locking plate with its end bearing
against a side of the nut and so preventing it from turning.
.
2. Securing together a locking plate and a washer plate such as are referred to
in the preceding claim by a split key or piece of hoop which is passed through slots
of both plates and has its ends bent over the locking plate, substantially as
described.