Improved Nut Locking Device.
Year: 1892

page_text: Date of Application, 7th June, 1892.
Complete Specification Left, 7th Mar., 1893-Accepted, 29th Apr., 1893
PROVISIONAL SPECIFICATION.
Improved Nut Locking Device.
I, ERNST JOSEPH KOESTER, of Harkorten, Westphalia, Prussia, Germany,
Gentleman, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved device for locking the fish plate nuts of
railway rails, which is durable and capable of being used repeatedly.
and
Referring to the accompanying drawings
Fig. 1 is a plan of the nut-locking device;
Fig. 2 shows in section a screw-nut, to which such a locking device is applied,
Fig. 3 is a section through the locking device.
The locking device cousists as shown in Fig. 1 of a pair of washers which
are connected together by means of a strip preferably made in one therewith,
and are provided with any suitable number of radial tongues or extensions a.
The inner portions of these tongues bear directly against the fish plate d and
the free ends are doubly curved as shewn, the outer ends being bent towards
the fish plate as shown in Fig. 3 in order to prevent the screw key from striking
against these ends of the tongues when the nut is screwed home. The above
described shape is given to the tongues prior to the screwing on of the nut b
thereby obviating the necessity of bending up the same when the nut is in place.
By these means the tongues are not bent to a sharp angle and fracture thereof
is consequently avoided, so that it is possible to employ the locking device
repeatedly. When the nut has been screwed home, the tongue a is bent by a
few gentle blows of a hammer into the position shown in Fig. 2 at a¹ whereby
accidental unscrewing of the nut is prevented.
With a nut locking device according to this invention it is not necessary to
employ a mandrel (Fig. 2) over which to bend the tongues.
Dated this 7th day of June 1892.
E. J. KOESTER,
By L. W., per F. B.
COMPLETE SPECIFICATION.
Improved Nut Locking Device.
I, ERNST JOSEPH KOESTER, of Harkorten, Westphalia, Prussia, Germany,
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 device for locking the fish plate nuts of
railway rails which is durable and capable of being used repeatedly.
and
Referring to the drawings left with my Provisional Specification,
Fig. 1 is a plan of the nut-locking device;
Fig. 2 shows in section a screw-nut, to which such a locking device is applied,
Fig. 3 is a section through the locking device.
The locking device consists as shown in Fig. 1 of a pair of washers which are
connected together by means of a strip preferably made in one therewith, and
are provided with any suitable number of radial tongues or extensions-a. The
nner portions of these tongues bear directly against the fish plate d and are
Prine 21

page_text: doubly curved as shewn the outer ends being bent towards the fish plate as shown
in Fig. 3 in order to prevent the screw key from striking against these ends of
the tongues when the nut is screwed home. The above described shape is
given to the tongues prior to the screwing on of the nut b which is preferable
to bending them up when the nut is in place; the tongues are not bent to a
sharp angle and fracture thereof is consequently avoided, so that it is possible
to employ the locking device repeatedly. When the nut has been screwed home,
a tongue a is bent by a few gentle blows of a hammer into the position shown
in Fig. 2 at a¹ whereby accidental unscrewing of the nut is prevented.
It is not necessary to bend the tongues of a nut locking device according to
this invention over a mandrel (Fig. 2).
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
:-
An improved nut locking device consisting of a pair of connected washers
provided with doubly curved tongues each of which can be bent up and pressed
against a face of the nut, substantially as described and shown in the accompanying
drawings.
Dated thin 744 10–
1000
E. J. KOESTER,
By L. W., per F. B.