Improvements in Nut and Bolt Locks.
Year: 1897

page_text: Date of Application, 12th Aug., 1897-Accepted, 18th Sept., 1897
COMPLETE SPECIFICATION.
Improvements in Nut and Bolt Locks.
I, JOHN BENNETT KEARNEY, of Kokomo, County of Summit, Colorado, U.S.A.,
Miner, 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:-
In the accompanying drawing Fig. 1 is a perspective view of a railway rail
joint with the nut and holt lock of this invention applied thereto. Fig. 2 a partial
cross sectional view of the same taken through a nut and bolt lock.
Fig. 3 an
end view of the nut and bolt with a locking cap in dotted lines. Figs. 4 and 5
detail views.
The device of the invention is shewn applied to railway rails by way of example.
A are the rails having ordinary fish plates B. C bolts having the usual head C¹
and cylindrical body C. C³ is the threaded end of the bolt whereon is placed
a clutch washer D, screw nut E, and locking cap F, the threaded part of the bolt
being thus completely covered and protected from the weather and injury.
The
The threaded part C3 of the bolt has preferably three longitudinal serrated
clutch seats C therein which extend from the end to the smooth cylindrical part
and may be formed by rotary cutters or dies or in any suitable manner.
clutch washer D has a central aperture adapted to fit around the thread and into
the clutch seats C and to slide freely upon the bolt and is provided with. a
tapped hole d for a set screw. The nut E screws upon the bolt and presses the
clutch washer 1) against the fish plate.
The locking cap F is formed to take over the end of the bolt through its suitably
G is a set screw taking
apertured end f and over the nut and clutch washer.
into a tapped boss f on the locking cap said set screw also extending into the
hole d of the clutch washer I by which means the locking cap, nut, and washer
are firmly held together and prevented from turning by the engagement of the
serrated clutch washer and the serrations f¹ cover end of the clutch cap with
the serrated clutch seats C+ of the bolt, thus the nut although fitting loosely on the
screw thread of the bolt will be absolutely prevented from turning thereon.
The screwed part of the bolt is somewhat weakened by the cut out clutch seats
but the clutch cap fitting closely over its end and over the nut and washer secured
thereto as described, reinforces it.
As is obvious, the clutch washer may be dispensed with and the nut locked
by the clutch or locking cap F and set screw G.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is:-
1. A nut and bolt lock comprising a bolt having longitudinal clutch seats,
a clutch washer of corresponding cross section, a nut, a locking cap having a cover
end to fit the end of the bolt, and a set screw to hold the locking cap upon the
washer substantially as described and shewn.

page_text: 2. A nut and bolt lock comprising a bolt provided with longitudinal clutch
seats, a nut screw threaded to fit thereon, a locking cap to fit over said nut and over
the end of the bolt and a set screw provided in the locking cap, substantially as
described and shewn.
Dated this 12th day of August 1897.
THOMAS R. SHILLITO,
89 Chancery Lane, London, W.C., Agent for the Applicant.