Improvements in the Manufacture of Hinges.
Year: 1893

page_text: Date of Application, 26th Jan., 1893
Complete Specification Left, 16th Oct., 1893-Accepted, 18th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Hinges.
I CHARLES SHOWELL of Lower Loveday Street, Birmingham, Brassfounder,
do hereby declare the nature of this invention to be as follows:-
This invention relates to the manufacture of hinges, and consists in the method
or arrangement by which the moulding operation is carried out prior to the casting
of the parts forming the said hinges.
In each part of the hinge and between the knuckles, (or those parts through
which the joint pin passes) and in that part of the plate which conjoins therewith,
it is desirable that it should be what is termed as "hollow formed," that is it should
embrace the knuckle of the opposite part as far as possible, so as to avoid an open
space or gap thereat. This is at present effected in certain ways which are
troublesome and costly, and this my invention is to effect this in a simpler and less
costly manner.
In carrying out my invention, I make the pattern from which they are to be cast,
with the knuckles having the spaces for the opposite knuckles. The plates at
such spaces are shaped in the desirable "hollow" form.
Upon and between the said knuckles I provide moulding core prints, which form
an impression in the sand to receive the pin cores. In addition to this I also
provide what may be termed chills, or removeable pieces of metal (or other suitable
material) which pass down in the knuckle recesses or openings behind the pin
prints, whose front (or lower) edges are shaped corresponding to the desired hollow
form. The pattern is now moulded in the usual manner, and when the upper
mould is removed the aforesaid chills forin part of the said mould, so far as their
front edges are concerned, by which the " hollow" is made. Sand cores or the
usual metallic pins may now be placed in the moulds for the holes for the joint pins
in the ordinary manner of moulding such hinges. When the hinges are cast, the
chill pieces are readily removed for re-use. The precise shape of these chills may
be varied according to circumstances.
Dated this 24th day of January 1893.
CHARLES T. POWELL,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Hinges.
I CHARLES SHOWELL, of Lower Loveday Street, Birmingham, Brassfounder,
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 the manufacture of hinges, and consists in the method
or arrangement by which the moulding operation is carried out prior to the casting
of the parts forming the said hinges.
In each part of the hinge and between the knuckles, (or those parts through
pin which the joint passes) and in that part of the plate which conjoins therewith, it
is desirable that it should be what is termed as "hollow" formed that is, it should
embrace the knuckle of the opposite part as far as possible, so as to avoid an open
space or gap thereat, when the hinge is complete. This is at present effected in
certain ways which are troublesome and costly, and my invention is to effect this
in a simpler and less costly manner.

page_text: I will now proceed to more particularly describe this my invention, by the aid
of the accompanying sheet of drawings, upon which are figures and numbers of
reference, like numbers referring throughout the several views to the same thing
or part, and in which :-
Fig. 1, is a plan view and Fig. 2, an end view of the pattern for one half of
the hinge.
Fig. 3, is a front view and Fig. 4, an end view of the chill hereinafter named.
Fig. 5, is a sectional end view through the complete (top and bottom) moulds,
showing position of chill between knuckles, on line A-B Fig. 1.
Fig. 6, is a sectional end view through the complete (top and bottom) moulds,
taking its sectional line through C-D, Fig. 1.
Fig. 7, is a plan view of the lower half of the mould on line E-F of Fig. 5.
Fig. 8, is an inverted plan view on line E-F, Fig. 5, of the upper half of the
mould.
Fig. 9, is a front view of a hinge made according to my invention.
I first make the pattern 10, from which the hinge is to be cast, (one half of
which I have only illustrated Fig. 1) having the knuckles 11, spaces 12, and
"hollow formed" parts 13, also moulding core print 14.
I also provide what may be termed chills or removable pieces of metal (or other
suitable material) 15, the front edges 16, of which are shaped corresponding to the
desired "hollow form," 13; these chilis are passed down in the knuckle spaces or
openings 12 of the pattern, and behind the core prints 14. The pattern is now
moulded in the usual manner so that when the one (upper) half 17, of the mould is
removed, the chills 15, remain in the other lower half 18, of the mould, forming a
part of same, so far as their front edges 16, are concerned, as seen in Figs. 5 & 7.
The sand pin core 19, is now placed in the mould, and the two moulds secured &c.
together in the ordinary manner ready for casting.
The casting having been effected, the chill core 15, is readily removed, leaving
the perfectly hollow formed " part 13, upon the newly made casting.
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By this my improved arrangement, am able to produce hinges in a simpler, and
quicker, and less costly manner than heretofore, as I dispense with the usual
cumbersome core for forming the space or openings 12, for the opposite knuckles,
and also avoid the troublesome present necessary method of "guaging" the correct
position of such cores.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what I
claim is :-
In the manufacture of hinges, the combination with the pattern 10, & print 14,
of the removable chill 15, substantially as herein set forth and shown, and for
the purposes specified.
Dated this 14th day of October 1802
CHARLES T. POWELL,
12, Cherry Street, Birmingham, Applicant's Agent.