Year: 1886

page_text: I, HERBERT JOHN ALLISON, of the firm of Allison Brothers, of 52 Chancery
Lane, London, in the County of Middlesex, Patent Agents, do hereby declare the
nature of this invention which has been communicated to me from abroad by
George Haseltine, of 247 Broadway, New York City, United States of America,
Gentleman, to be as follows:-
The invention consists in certain improvements in a nut fastener, whereby the
nut is securely held and unscrewing of the same is readily accomplished. The
invention is specially applicable to secure nuts on the bolts of fish plates of railway
rails.
C
A front metallic plate is employed having an opening for the passage of the bolt
with one of the sides of the plate slit at a tangent to a circle, the diameter of
which is equal to the smaller diameter of the nut, or the cut is made in a line
perpendicular to the terminus of a radius of a circle, the diameter of which is
equal to the smaller diameter of the nut, thus forming a spring locking lip, which
is bent or turned outward, the inner edges of the said lip being coincident with
the sides of the nut. Between this plate and the fish plate is a rear plate which
may be constructed of any shape, so long as it does not interfere with the motion
of the locking lip when pressed inward or below the plane of the nut or face of
contact with the front plate to permit the unscrewing of said nut. This plate
being angular and meeting the flange and base of the rail, is thus prevented from
being rotated.
The front and rear plates are connected as one, and this is accomplished in the
present case by making the two plates of one piece of metal, properly bent, thus
rendering the fastening strong and durable, as the rear plate acts as a re-enforce to
the body of the front plate, the inner plate, however, leaving sufficient space for the
[Price 8d.1

page_text: locking lip. It is readily seen that when the nut is rotated the rear or inner faces
of its corner parts ride over and on the portions of said lip beneath the nut, thus
forcing back the lip. As soon as a corner of the nut clears the inner edge of the
lip, the latter springs out and projects across the side of the nut, the inner edges
engaging with the contiguous side of the nut, thus fastening the nut. Should the
nut become loosened, it is further rotated, and its rear face again rides over and
presses the lip, another side of the nut then engaging with the edge and locking
the nut. In order to unscrow the nut, the lip requires to be forced back in order
to permit the passage of the nut thereover.

page_text: Figure 2 is an end view thereof.
Figure 3 is a section of the fastener showing the back plate thereof.
Figure 4 is a view of the front plate thereof.
Figure 5 is a perspective view of the complete fastener.
Similar letters of reference indicate corresponding parts in the several figures.
This invention consists in certain improvements in a nut-fastener whereby the
nut is securely held and unscrewing of the same is readily accomplished, as will be
hereinafter fully set forth.
Referring to the drawings;
A represents a fish-plate or splice-piece, and B represents a metallic plate having
an opening for the passage of the bolt. One of the sides of the plate is slit, as at u,
at a tangent to a circle the diameter of which is equal to the smaller diameter of
the nut, or the cut is made in a line perpendicular to the terminus of a radius of a
circle the diameter of which is equal to the smaller diameter of the nut, thus
forming a spring or locking lip C, which is bent or turned outward, the inner
edges, a', of the said lip being coincident with the sides of the nut. Between the
plate B and the fish-plate is a plate, D, which may be constructed of any shape, so
long as it does not interfere with the motion of the locking-lip C when pressed
inward or below the plane of the nut or face of contact with the plate B to permit
the unscrewing of the said nut. The plate B, being angular and meeting the
flange and base of the rail, is thus prevented from being rotated.
The plates B, D, are connected as one, and this is accomplished in the present
case by making the two plates of one piece of metal, properly bent, as shown in
Fig. 5, thus rendering the fastening strong and durable, as the rear plate acts as a
re-enforce to the body of the front plate, however, reaching to the tangential line a¹,
(see Fig. 5,) leaving sufficient space for the locking-lip.
It is readily seen that when the nut is rotated the rear or inner faces of its
corner parts ride over and on the portions of the lip C beneath the nut, thus
forcing back the lip. As soon as a corner of the nut clears the inner edge of the
lip, the latter springs out and projects across the side of the nut, the inner edges, a³,
engaging with the contiguous side of the nut, thus fastening the nut.
Should the nut become loosened, it is further rotated, and its rear face again
rides over and presses the lip, another side of the nut then engaging with the
edge al and locking the nut.

page_text: In order to unscrew the nut, the lip requires to be forced back in order to permit
the passage of the nut thereover.
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 fastener consisting of the two connected plates, B, D, the outer plate
having a spring-lip which extends tangentially to a circle whose diameter is equal
to the smaller diameter of the nut, and the rear plate being entirely removed
from said lip and re-enforcing the body of the front plate, substantially as
described.
Dated this 12th day of Santavabos 100%