Improvements in Apparatus for Covering Eyelets.
Year: 1896

page_text: Date of Application, 17th Mar., 1896-Accepted, 18th Apr., 1896
COMPLETE SPECIFICATION.
Improvements in Apparatus for Covering Eyelets.
I, ELEAZER KEMPSHALL, of Newton, County of Middlesex, State of
Massachusetts, United States of America, Gentleman, 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 to apparatus for applying to the exposed ends of sheet-
metal eyelets an annular covering of plastic material such as a pyroxyline compound,
to present a wearing surface which will prevent the exposure of the metal of the
eyelet. The invention has for its object particularly to provide such improvements
in apparatus of this class as will enable the portion of the cover that extends into
the interior of the eyelet to be accurately formed and prevent the formation of a
rough or abruptly projecting shoulder at the inner margin of the cover. The
invention consists in the improvements which I will now proceed to describe and
claim.
Of the accompanying drawings, forming a part of this Specification,
Figure 1 represents a sectional view, showing a portion of the eyelet-covering
apparatus which embodies my improvement.
Figure 2 represents a view similar to Figure 1, showing an additional member of
the apparatus.
Figure 3 represents a sectional view of an eyelet formed by the apparatus shown
in Figures 1 and 2.
The same letters of reference indicate the same parts in all the figures.
In the drawings-
a represents a die-plate having a socket a¹ formed to receive the tubular body b of
an eyelet, the upper surface of the plate a constituting a molding face surrounding
the eyelet and adapted to impart a suitable form to the under surface c¹ of an
annular head or cover c formed on the outer end of an eyelet.
d and e represent the members of a two-part male die, which co-operates with
the plate a in forming the head or cover c, the member d having a molding
portion d' which forms the crown of the head or cover, while the member e has a
molding face el which forms the inner end portion 2 of the cover. The member d
is provided with a central projection d formed to enter the body of the eyelet, said
projection being of considerably less diameter than the body of the eyelet, as shown
in Figure 2. The member e has a recess or cavity formed to receive the
projection d, the said member e being formed to closely fit the interior of
the eyelet and enter the space between the inner surface of the eyelet and the
projection d².
In covering an eyelet with the described apparatus, the eyelet is placed in the
socket of the plate a, and the member e, which is supported by a suitable base or
holder e³, is inserted in the eyelet, as shown in Figure 1. An annular washer of
the plastic material is then placed upon the upper edge of the eyelet, and the
member d is brought down to the position shown in Figure 2, the projection d
entering the interior of the eyelet and coming to a bearing upon the wall of the
recess of the member e. The surfaces d'and e¹ of the two members are thus
caused to meet and form a practically continuous molding surface which forms all
parts of the head or covering except the under surface c'. The material of the
cover is softened and rendered plastic by heat, the dies being heated during the
operation.

page_text: It will be seen that by making the male die in two separable members which
meet within the die, one of said members closely fitting the interior of the eyelet
below its molding surface, I am enabled to accurately form the inner end portion
of the cover c, giving the same a gradual inclination or bevel, as indicated at c², and
avoiding the formation of a rough or abrupt shoulder.
I am also enabled to make the inner end portion of the cover c terminate at
any given point on the inner wall of the blank by means of the length of the
member e.
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. As a means for covering the exposed ends of eyelets with plastic material, a
die-plate having a socket to receive the body of the eyelet, and a male die
composed of two separable members adapted to co-operate in molding the cover
within the eyelet.
2. As a means for covering the exposed ends of eyelets with plastic material, a
die-plate having a socket to receive the body of the eyelet, a male die-member
formed to enter the body of the eyelet and having a recess or socket at one end
and a molding face surrounding said recess and adapted to mold the inner portion
of the cover, and another male die-member adapted to mold the outer portion of
the cover, said members meeting within the eyelet.
Dated this 24th day of February 1896.
ELEAZER KEMPSHALL.
Haseltine, Lake & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.