IMPROVE- MENTS IN CHARCOAL BOX IRONS
Year: 1884

page_text: We, CHARLES FREDERICK CLARK, of the firm of T. and C. Clark and Company
of Shakspeare Foundry, Wolverhampton in the County of Stafford, holloware
manu'acturers, and HENRY LUCAS of 14 Alexandra Street, Wolverhampton, afore-
said, pattern maker. do hereby declare the nature of our invention for "IMPROVE-
MENTS IN CHARCOAL BOX IRONS" and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement,
reference being had to the accompanying drawing and the letters of reference
marked thereon.
This invention relates to improved means of fastening or holding down when
closed the lids of charcoal box irons, and to improvements in the hinged parts of
such irons.
The lids of charcoal box irons have, according to the latest improvements, been
held down when closed by an internal fastening consisting of a lever immediately
underneath the lid, bent down and shaped so as to clip under a snug projecting
from the side of the box, when moved round by an exterior handle lever connected
to a short spindle passing through the lid and acting as a common axis for the
two levers. This internal fastening is objectionable because the lever and snug
are liable to be coated over with soot and to be twisted or warped by the heat in
consequence of the combustion of the charcoal within the box, and thus rendered
inoperative. Now the object of part of this invention is to arrange the working
parts of the fastening outside the box and to obviate the inconvenience referred to.
A further object of this invention is to make the hinge at the back of the lid and
box in a stronger and better fitting manner than hinges of the ordinary description.
These objects are effected in the manner illustrated by the accompanying drawing,
of which figure 1 is a longitudinal section through a charcoal box iron, figure 2 a
section taken on line x x of figure 1, figure 3 a section taken on line y y of figure 1
looking in the direction of the hinge, and figure 4 a section taken on line
figure 1 so as to shew the catch hereinafter described in front elevation.
figure 4 the lid is omitted and only so much of the box is shewn as is necessary
to shew the connection of the catch therewith. The same letters of reference
occurring upon any two or more of the views indicate corresponding parts. A is
the box for containing the charcoal, B the lid, C the chimney, and D the handle.
The lid B is hinged as usual at E. F is a snug (shewn by dotted lines only
of
In
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page_text: figure 2) cast inwards from one side of the box, as shewn, and upon this snug is
cast a catch G which passes up through a hole in the lid B as such lid is closed.
His a lever consisting of a broad flat bar having a knob handle J at its back end.
This lever H is made capable of turning upon a stud or fulcrum K, by which it is
also held down, and projects beyond the stud K, as shewn at L, so that when the
lever is turned into the position shewn by full lines figure 2 the part L passes
under a shoulder a of the catch G. This shoulder a is formed in a slanting
direction in front elevation as shewn at figure 4 so as to act as an inclined plane
and deflect downwards the forward end L of the lever Has it is turned under the
catch, and thus the part L acts as a strong spring pressing under the catch and
upon the lid B, keeping the lid firmly closed. The lever H is shewn in its
unfastened position by dotted lines figure 2. The working parts of this fastening
are, as will be seen, entirely exterior to the box.
M M are single ears standing up from the box to receive the outer ends of the
hinged pin E. A plain cylindrical barrel N, forming a long single joint between
the ears M M, is formed along the back of the lid for the whole distance between
the ears, and the lower circumference of this barrel fits within a groove O sunk
along the bar P running the whole distance across the back end of the box as
shewn, (specially by figure 3). The underside of the lid closes down on to the
upper edge of the bar P when the lid is fastened down. The hinge pin E which
passes through the axis of the barrel N receives so solid a support against bending
throughout its whole length between the ears, that the outer ends may be rivetted
over with a solid snap head, as shewn, instead of with the flimsy description of
rivetted head commonly used for hinges of the ordinary construction in which the
pin is unsupported for a part of its length. The barrel N, fitting as it does into
the groove O, and the lid closing down on to the ledge b, for the whole distance
across the box, make an efficient joint against the escape of fumes from the box.
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. The exterior fastening for the lids of charcoal box irons consisting of the
catch G carried upon the snug F, and projecting up through the lid of the box
when the same is closed, and the part L of the lever H, constructed and operating
substantially as and for the purpose described and shewn.
2. In a charcoal box iron hinge the long single joint N extending the whole
distance between the ears M M for the purpose of giving efficient lateral support
to the pin E whilst the same is being rivetted, and also such single joint in
combination with the groove O substantially as and for the purpose described and
shewn.
D1 and day of T 1001