CERTAIN IMPROVEMENTS IN THE MANUFACTURE OF HINGES
Year: 1843

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
COOK MATCHETT, of Birmingham, in the County of Warwick, Manufacturer,
send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Sixteenth day of March, in the sixth year of Her reign, did, for
Herself, Her heirs and successors, give and grant unto me, the said Frederick
Cook Matchett, Her especial licence, full power, sole privilege and authority,
that I, the said Frederick Cook Matchett, my exors, adñiors, and assigns, or
such others as I, the said Frederick Cook Matchett, my exors, adors, or
assigns, should at any time agree with, and no others, from time to time and.
at all times during the term of years therein expressed, should and lawfully.
might make, use, exercise, and vend, within England, Wales, and the Town
of Berwick-upon-Tweed, my Invention of "CERTAIN IMPROVEMENTS IN THE
MANUFACTURE OF HINGES;" in which said Letters Patent is contained a pro-
viso that I, the said Frederick Cook Matchett, shall cause a particular
description of the nature of my said Invention, and in what manner the same is
to be performed, to be inrolled in Her said Majesty's High Court of Chancery
within six calendar months next and immediately after the date of the said in
part recited Letters Patent, as in and by the same, reference being thereunto
had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Frederick Cook Matchett, do hereby declare that the nature of my said

page_text: described and ascertained in and by the following description thereof, reference
being had to the Drawings hereunto annexed, and to the figures and letters
marked thereon (that is to say) :-
My Invention consists,―
--
Firstly, of forming the centres or axes of hinges, with flanges or shoulders,
so as to admit of the two flaps or sides of such hinges being cast on the said
centres or axes at the same time, the flanges or shoulders on such centres or
axes preventing the metal of the two sides or flaps running together during
the process of casting; and,
Secondly, an improved method of casting.hinges.
Figure 1 of the accompanying Drawing represents one of my improved
centres or axes for hinges. It consists of a cylindrical rod of metal a, having
a series of flanges or shoulders 6, 6, 6", bi, formed on it at equidistant points,
and in planes at right angles to its axis. When the centres or axes are cast,
I turn or otherwise render smooth those parts between the flanges b, b', and
6,6 The form of the flanges may be varied, as seen in the centres or
axes 1, 2, 3, Figure 2. I prefer, however, that form of flange represented in,
Figure 14. Those parts of the centres or axes between the flanges b, b', and
61, 61, Figure 1, are covered with a thin coating of some glutinous substance,
such as varnish or white lead, mixed with oil, and are afterwards sprinkled
over with fine sand or dust previous to casting the sides or flaps of the hinges
thereon. The manner of casting the flaps of the hinges on the centres or axes
thus prepared is illustrated in Figure 3. a, b, represents the casting frame or
mould; a is the upper frame, and 6 the lower frame. The line c shews the
division between the sand of the two frames. The parts marked d, d, are the
spaces or cavities into which the liquid metal runs to form the flaps or sides of
the hinge. e, e, are the centres or axes, constructed and prepared as herein-
before described; and placed in their proper positions in the mould. The
method of forming the mould, Figure 3, is as follows:-I take a model, in
wood or metal, of the form represented in plan in Figure 4, and in end view
in Figure 5. This model I will call a "pattern." When the hinges to be
cast are of a large size, such for example as are ordinarily used for suspending
the doors of rooms, a casting from a proper pattern is formed in the sand in
the usual way; but when the hinges are of small size, such for example as are
used for cupboard doors or other light purposes, it is difficult to form a mould
in sand in which the parts marked a, Figure 5, and a, Figure 6, are left clear
and sharp. In order to avoid this difficulty I use moulds formed partly of
sand and partly of metal. That part of the mould which I form of metal is

page_text: represented in plan in Figure 7, in elevation in Figure 8, in end view
Figure 9, in transverse section Figure 10, and in perspective Figure 11. In.
the mould, Figure 3, this metallic piece constitutes the mould for the back of.
the hinge, and I will call it the "back mould." The object of this "back
mould" is to obtain a perfect casting at that part of the hinge marked a,
Figure 5, and a, Figure 6.. It consists of a metallic piece, of the form repre-
sented, the projections x, x, serving as the mould for the parts a, a,
(Figures 5 and 6). The hollow part of the "back mould" w (Figures 7, 9,
10, and 11), is filled with sand during the process of forming the mould, so
that the parts of the hinge marked v, Figure 6, are cast in sand, and the rapid
cooling of the metal, which would take place if the whole of the back of the
hinge joint were cast in a metal mould, is avoided. The manner of using
this "back mould" is as follows:-An impression of the front or face, u of
the pattern, Figures 4, 5, and 6, is made in the sand of the upper frame a
(Figure 3); and the pattern being still left in its place in the mould, the
metallic "back mould," Figures 7, 8, 9, 10, and 11, is placed thereon, so that
the projections x, x, fall into the spaces a, a, Figure 6. The frame 6 is then
placed upon the frame a, and sand being placed therein, the mould is com-
pleted in the usual manner. When the frame 6 is removed, for the purpose
of taking the pattern out of the mould, the "back mould," Figures 7, 8, 9,
10, and 11, is retained in its place by its inclined sides wedging in the sand.
The moulds for casting hinges having been thus formed, the centres or axes,
prepared as herein-before described, are carefully placed in the lower mould
or frame in such a position that the flanges b, 6, 61, 61, of the centro or axes,
Figure 1, rest in the grooves formed by the flanges or projections t, t, of the
pattern, Figures 4 and 5. The casting of the hinge is then effected in the
ordinary manner. Figure 12 represents in section one of my improved
hinges; and Figure 18 is a front view of the same. f.f, are the sides or
flaps of the binge, and a (Figure 12) the centre or axis.
that should the centre or axis be broken at any part, as at a³, Figure 12, tho
flaps or sides would still hold together as effectually as if it were whole.
Figure 2 shews a pattern from which a number of centres or axes may be
cast at once. Figure 14 is an end view of the same.
It will be observed,
Having now described the nature of my Invention, and the manner in
which the same is to be performed, I wish it to be understood that I do not
claim as my Invention the casting of the two flaps or sides of hinges on the
centres or axes of such hinges at one operation. But I claim,--
Firstly, the addition of flanges, shoulders, or projections to the centres or
axes of cast hinges, such flanges, shoulders, or projections being cast or other-

page_text: wise formed in one piece with the said centres or axes, whether the flaps or
sides of such hinges be cast on the centres or axes at one or more operations;
and,
Secondly, the method of constructing "back moulds" for casting hinges,
herein-before described and represented in the accompanying Drawing.
In witness whereof, I, the said Frederick Cook Matchett, have hereunto
set my hand and seal, this Eighth day of September, in the year of
our Lord One thousand eight hundred and forty-three.
JAMES, Extra.
FREDERICK COOK (L:S:) MATCHETT.
AND BE IT REMEMBERED, that on the Eighth day of September, in the
year of our Lord 1843, the aforesaid Frederick Cook Matchett came before
our said Lady the Queen in Her Chancery, and acknowledged the Specification
aforesaid, and all, and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose.
Enrolled the Fifteenth day of September, in the year of our Lord One.
thousand eight hundred and forty-three.