Improvements in the Construction of Nuts.
Year: 1892

page_text: Date of Application, 1st Mar., 1892-Accepted. 2nd Apr. 1892
COMPLETE SPECIFICATION.
Improvements in the Construction of Nuts.
1, HERBERT JOHN ALLISON, of the firm of Allison Brothers, Patent Agents,
doing business at Number 52, Chancery Lane, London, in the County of Middlesex,
England, do hereby declare the nature of this invention, which has been com-
municated to me from abroad by the Elastic Nut Company, located in the City
of Milwaukee, in the County of Milwaukee, and State of Wisconsin, United
States of America, and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
The invention has for its object the construction of a blank nut, which may be
afterwards tapped, if desired, and is an improvement on the device described in
Letters Patent No. 1428 of 1888 (granted, as a communication to me, on January 31,
1888) and to that end, the present invention consists, primarily, in providing the
said blank nut with a slit extending from the top of said nut to a point below the
center thereof, and thence laterally to a point above said center and thence down-
ward to the bottom of said nut, all as is more fully explained hereinafter, in connection
with the accompanying drawings.
DESCRIPTION OF THE DrawingS:
Figure 1 is a view of the improved device, in side elevation,
Figure 2 is a plan view thereof,
Figure 3 is a view of the blank from which the nut is made.
A, Figure 3, represents the said nut blank, consisting of a strip of iron, steel or
other suitable material, the central portion of which is of rectangular form, having
an integral extension marked a and b, respectively, at each end. The extension
is parallel, on its upper edge, with the upper edge of the main portion of the strip A,
while the lower edge of the extension, is similarly parallel with the lower edge of
said main portion. Each of these extensions has a vertical end edge c and d, of a
length or height somewhat greater than one half the height of the main portion A,
and the adjacent ends e and of said main portion are likewise straight and of a
height or depth somewhat greater than one half the height of said main
portion A.
The lower edge 9 of the extension a runs, at an acute angle, from the lower end
of the line e to the upper end of the line e, while the upper edge of the extension b
runs, at a like angle, from the lower end of the line to the upper end of the line d,
all as shown in Figure 3, so that, when the ends of the blank are put together one
of said extensions a (or 6) will exactly fill the space above (or below) the other
extension.
In formning nuts from the described blank, it is customary to employ a suitable
die, or dies, within which the ends of the said blank are brought together, forming
a more or less complete ring, which may then be placed within other dies to give
the required hexagonal or other shape to the exterior of the nut, (as well as the
crown B, when desired), but these dies, and the method of placing the blank or
ring within them form no part of the present invention, as the said nuts may be
formed from the described blank by hand as well as by any suitable machinery.
When the ends of the blank have been brought together, and the nut shaped
therefrom as shown and described, the bore of the nut is tapped in the ordinary
manner, and the described end extensions a and b, form a lock, which prevents
undue lateral spreading or opening of the nut, when the same is screwed upon a
bolt, while, at the same time, the nut is capable of sufficient separation, in use, to
serve as a lock or spring nut, the inherent elasticity of the nut tending always
oward the original closure shown in Figure 1 and hence causing the nut to always
TD 017

page_text: tightly grip and hold the bolt on which it is placed. While the ends of the main
portion of the blank, and of the extensions thereof are shown and described as
being straight or vertical, and the inner edges of said extensions as being oblique
or at an acute angle to the horizontal, which is the preferred construction, it will
be understood that.all, these.lines may be varied at. will, so long as the slit in the
nut extends from the top of the nut to a point below the longitudinal center thereof
(indicated by the dotted line i, in Figure 1) and thence laterally to a point above
.said center, and thence downward to the bottom of the nut.
Having now particularly described and ascertained the nature of the said inven-
stion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is:
1. A nut blank, consisting of a strip of metal, the ends of which are formed with
integral extensions, one parallel at its upper edge with the upper edge of said strip,
while the lower edge of the other extension is parallel with the lower edge of said
strip, and the inner edges of said extensions being formed on oblique lines extending
from a. point below to a point above the longitudinal center of said strip.
2. A nut, provided with a slit .extending from the top of said nut to a point
-below the center thereof and thence laterally to a point above said center and
thence downward to the bottom of said nut.
Dated this 1st day of March 1892.
ALLISON BROS.,
Agents for the Applicant.