Improvements in Lacing Studs for Boots and Shoes.
Year: 1891

page_text: Date of Application, 1st Dec., 1891-Accepted, 2nd Jan., 1892
COMPLETE SPECIFICATION.
Improvements in Lacing Studs for Boots and Shoes.
I, GILMAN CRANE HILL, of 44, Leavenworth Street, in the City of Waterbury
and State of Connecticut, in the United States of America, Manufacturer, 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
statements :-
This invention relates to improvements in lacing studs for boots and shoes, of the
class wherein the top is formed of a composition of hardened plastic material, the
same as, or resembling that employed in the manufacture of hard rubber buttons,
or imitations thereof.
The object of the invention is the construction of a lacing stud having a metallic
body or shell and composition top, which is most easy of production, cheap and
strong, and having the composition portion thereof so engaged or interlocked with
the metallic portion, that there will be no liability of the former separating from
the latter.
The invention consists in the novel formation and construction of the metallic
body or shell, and furthermore in the combination therewith of the composition or
plastic material forming the top which is interlocked with the metallic body, all
substantially as will hereinafter more fully appear.
The present improvements are clearly illustrated in the accompanying drawings:
Figure 1 is a perspective view of the stud,
Figure 2 being an axial section through the stud, and
Figure 3 is a plan view of the metallic body, without composition top.
All of said views are on an enlarged scale.
The body of the stud consists of the annular shell A and the collet or eyelet, B.
The shell, A, consists of the tubular shank, o, above which is the annular rib or.
flange, b, while above the latter the shell is necked or contracted as at d, and then
upwardly flaring, the top of the shell consisting of the flange or ledge, f. The
shoulder, g, is thus internally formed at the junction of the inner wall of the shank, a,
with the inner wall of the necked portion of the shell.
,,
The collet, B, which has a proportionate length substantially as indicated in
Figure 1, is applied, while in the form of an unclinched eyelet at and within the
contracted portion of the shell, A; that is, the said collet is outwardly turned as
at h, only at its upper end the lower extremnity thereof being practically of
cylindrical form. The cyclet or collet having been by its lower extremity entered
within the shell, 4, about as far as the shoulder, y, the same is by a proper tool or
appliance upset or outwardly turned as indicated at i, and caused to closely hug
the inner wall of the outer shell at the contracted portion thereof.
It will therefore be seen that there is thus constituted in or at the top of the
metallic body of the stud an annular space between the top of the flaring wall, f,
of the shell, a, and the upper portion of the collet, which is peculiarly adapted to
permit of a most effectual interlocking thereat of the plastic material, x, which
forms the top.
The plastic material, , is also entered within and fills the internal space within
the collet and also for a slight distance below the latter, engaging the shoulder, g,
and has its upper portion molded and of rounded or other desired form for the top
of the stud.
In the application of the plastic material, by the molding thereof, the body of
the stud, which in practice is a very thin shell,-being struck up or otherwise
formed, is subjected to a considerable strain or compression which in some cases
might result in the rupture thereof, or the widening of the neck, d, but at present.

page_text: however, by the provision of the internally applied collet the body is practically
and materially reinforced, there being no liability at the time of the molding and
compression, or packing in, of the plastic material, of warping or rupturing the
stud at its neck.
An inspection of Figure 1 will clearly show the very efficient anchoring or
interlocking of the plastic material both at the space outside of the upper flanged
part of the collet,-between the latter and the shell flange, f,-and within and
under the collet.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed-I declare that what I,
claim is :
A lacing stud consisting of an annular metallic shell having intermediately
thereof a contracted neck and having thereabove the outwardly flaring flange or
ledge surrounding the opening which is at the upper end of the shell and the
metallic bushing or collet in the form of an annular section with the opening which
is in its upper end surrounded by an outwardly extended flange, and said collet
having its extremity furthest from said flange entered into the neck in said shell
and engaged therewith, whereby the upper outwardly flange part of the collet is
supported within and separated from the flaring ledge of the shell, and the plastic
material entered within said collet and also covering same and the said ledge, and
having an interlocking engagement within the annular space between the ledge
and collet flange, substantially as described.
Dated this Fifth day of November 1891
GILMAN CRANE HILL.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.