IMPROVEMENTS IN APPARATUS FOR LOCKING AND FASTENING NUTS ON FISH PLATE AND OTHER BOLTS
Year: 1876

page_text: LETTERS PATENT to Francis Ley, of the Vulcan Iron Works, Derby, for the
Invention of "IMPROVEMENTS IN APPARATUS FOR LOCKING AND FASTENING
NUTS ON FISH PLATE AND OTHER BOLTS."
Scaled the 9th September 1876, and dated the 23rd March 1876.
PROVISIONAL SPECIFICATION left by the said Francis Ley at the Office of
the Commissioners of Patents on the 23rd March 1876.
FRANCIS LEY, of the Vulcan Iron Works, Derby. "IMPROVEMENTS IN APPARATUS
FOR LOCKING AND FASTENING NUTS ON FISH PLATE AND OTHER BOLTS."
This Invention has for its object improvements in apparatus for locking and
fastening nuts on fish plate and other bolts. For these purposes I employ a locking
bar which is held by and is able to slide through a socket or sockets like an
ordinary door bolt. The ends of this locking bar project beneath the flat sides of
two adjacent nuts, which are thus secured and rendered unable to turn until the
locking bar is drawn back or removed from beneath them. The socket or sockets
in which the locking bar slides are upon a plate through which by suitable holes
the screw bolts pass, and the nuts, when screwed on, lock the plate securely in its
place.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Francis Ley in the Great Seal Patent Office on the 22nd September
1876.
FRANCIS LEY, of the Vulcan Iron Works, Derby. "IMPROVEMENTS IN APPARATUS
FOR LOCKING AND FASTENING NUTS ON FISH PLATE AND OTHER BOLTS."
This Invention has for its object improvements in apparatus for locking and
fastening nuts on fish plate and other bolts. For these purposes I employ a locking
bar which is held by and is able to slide through a socket or sockets like an
ordinary door bolt. The ends of this locking bar project beneath the flat sides of
two adjacent nuts, which are thus secured and rendered unable to turn until the
locking bar is drawn back or removed from beneath them. The socket or sockets
in which the locking bar slides are upon a plate through which by suitable holes
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page_text: the screw bolts pass, and the nuts when screwed on lock the plate securely in its
place.
In order that my said Invention may be most fully understood and readily
carried into effect, I will proceed to describe the Drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side elevation of apparatus for locking and fastening nuts arranged
according to my Invention; Figure 2 is a plan; and Figure 3 is a transverse
section of the same taken on the line a, a, Figure 1. b, b, are portions of the fish
plates in connection with which the locking apparatus is shown to be applied;
c, c, are the screw bolts; and d, d, are the nuts upon them which require to be
locked; e, e, is a plate having holes in it corresponding to the bolts, and which is
placed over them before the nuts are screwed on; ff, are sockets which are formed
on the plate c, they receive and hold the locking bolt g. The locking bolt is
provided with a handle which also serves as a stop to limit the distance which the
bolt can slide. As shown in the Drawings the handle is in contact with a stop e¹
on the plate e, and a lug g¹ at the other end of the bolt is in contact with the
stop e on the same plate, so that the bolt cannot move endwise in either direction
until it has first been turned partly round by hand. The ends of the bolt g when
in this position project beneath both the nuts d, so that neither of them can
unscrew; but when the handle his moved to the right hand as far as it will go,
the bolt having first been turned partly round, the left hand nut is free to be
turned either to tighten or to remove it. Similarly, when the handle is moved to
the left to the other side of the stop e¹ the right hand nut is set free.
Having thus described the nature of my said Invention and the manner of
performing the same, I would have it understood that I claim the construction of
apparatus for locking and fastening nuts on fish plate and other bolts, substantially
as herein described.
In witness whereof, I, the said Francis Ley, have hereunto set my hand and
seal, this Twenty-first day of September, in the year of our Lord One
thousand eight hundred and seventy-six.