Improvements in and connected with Bolts for Fish Plates and the like.
Year: 1896

page_text: Date of Application, 24th Mar., 1896--Accepted, 20th June, 1896
COMPLETE SPECIFICATION.
Improvements in and connected with Bolts for Fish Plates and
the like.
We JAMES TYZICK, Machinist, and JAMES FREDERIC LAUTON, Manu-
facturer, both of St. John, in the County of St. John and Province of New
Brunswick, in the Dominion of, Canada. 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 generally to a fastening device for fish plate bolts, but it
is equally as well adapted for use upon bolts in other constructions; the object of
our invention being to provide a cheap, simple and efficient substitute for the
ordinary threaded nut, and also to dispense with the threaded bolt.
With these objects in view, our invention consists broadly in providing a bolt
with an essentially arrow or T.shaped end,,a.slotted wedge shaped key or washer
adapted to straddle said bolt below said end, and means for securing said key or
washer upon the bolt to prevent its being jarred or wrenched therefrom.
Our invention consists also in certain details of construction and novelties of
combination, all of which will be fully described and then pointed out in the claims.
In the drawings forming a part of this Specification:
Figure 1, is a perspective view of our device applied to a fish plate bolt.
Figure 2, is a vertical sectional view of the same.
Figure 3, is a detail view of the bolt.
Figure 4, is a detail view of the retaining plate, and
Figure 5, shows the key or washer and a different form of the retaining devices.
for holding the key or washer in place.
Referring to the drawing, A, indicates a section of railroad rail, and B, the fish
plates thereon.
Passing through the rail and plates is a bolt C, having the usual head c, but
at its opposite end the sides of the bolt are cut away as shown at c', thus
providing an arrow or T shaped end e2, and the rear faces c, of the end c, are
inclined as shown, providing sharp edges c', the purpose of which will appear
further on.
Upon the bolt C, is preferably arranged a metallic retaining plate D, said plate
having an oval opening d, to receive the bolt C.
Between the end of the bolt C, and the plate D, is forced a wedge shaped key
or washer E, said key or washer, having a flange or shoulder e, and a longitudinal
slot el, by which latter means the washer is made to straddle the bolt to the rear of
its end, and inasmuch as the forward face of this key or washer is inclined and
slides upon the inclined surfaces c, the fish plate B, will be bound securely, and
also the bolt. The inclined surface of the washer may also be formed with
serrations, which will engage the sharp edges c', and hold the key or washer
securely in place.
After the parts have been assembled as above described the portion of the
plate D, projecting beyond the flange or shoulder e is bent down upon said flange
or shoulder, thus securely locking said washer E, upon the bolt and prevents its
turning or jarring off.
If desired, the plate D, may be dispensed with, and a retaining wire F, such as
shown in Figure 5, may be employed; and in this construction, a perforation is

page_text: made in the flange e, in which one end of the wire is secured, while the opposite
end of the wire is passed around and secured to the end of the bolt C, which end
in this instance will have a groove to receive the wire.
Either form of retaining device may be used, or if desired, both of them can be
used at one and the same time.
In operation the bolt C, is passed through the parts to be secured, and the
plate D, arranged in place. The key or washer E, is then forced astride the
bolt C, and the inclined faces of the key and bolt end contacting, the parts will be
bound tightly together.
The plate D, is then bent to lock the key or washer. The serrations upon the
washer may be dispensed with if desired, the retaining devices being used to lock
the same.
It will thus be seen that we provide an exceedingly cheap, simple, and efficient
device for securing the fish plates and bolts, and it will also be seen that we
dispense with the expensive threaded bolt and nut, and provide a cheap and safe
substitute, and one that can be assembled and removed much easier and quicker
than the ordinary nut.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:
1. An improved bolt, having an arrow or T shaped end.
2. An improved bolt having an arrow or T shaped end, the rear faces of which
are inclined as described.
3. In combination, a bolt having an arrow or T shaped end, and a slotted wedge
shaped key or washer, arranged as described.
4. In combination, a bolt constructed as described, and a slotted wedge shaped
key or washer arranged thereon, the inclined face of the key or washer being
serrated for the purpose described.
5. In combination, a bolt constructed as described, a slotted washer having
a flange, and means for locking said washer in place, substantially as described.
6. In combination, a bolt C, constructed as described a slotted washer E, and the
retaining plate D, all arranged as described.
Dated this 24th day of March 1896.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.