Improvements in and Connected with the Securing of Cast Metal Plate Work together.
Year: 1887

page_text: Date of Application, 29th Dec., 1887
Complete Specification Left, 29th Sept., 1888
Complete Specification Accepted. 9th Nov., 1888
PROVISIONAL SPECIFICATION.
Improvements in and Connected with the Securing of Cast Metal
Plate Work together.
I, WILLIAM DICK, Junior, Partner of the Hecla Foundry Company of 272 Dobbie's
Loan, Glasgow, Lanarkshire, do hereby declare the nature of my said invention, to be
as follows:
This Invention has reference to improvements in and connected with the casting of
flat plates or the flat parts of castings which have to be screwed, fitted and secured to
other articles, with screw nuts in them, specially applicable for the purpose of screw-
ing or securing the flat plate parts of fire grates and cooking ranges together, and for
other cast metal and steel work; and which will save much time and labour in the
marking, boring and tapping of holes for the use of screws and securing such metal
plate work together.
The nature and novelty of the invention consist when applied to the thin plates for
grates and such like articles in which the screw nuts to he cast may be as thick as the
plate itself, in forming a thin washer like "pap or bearing on the pattern either on
one or both sides to give thickness to the plate at that part to strengthen the metal on
opposite sides of the nut to be cast in the plate. The patterns would be formed with
sinall holes in the centre of these bearing parts of the pattern, the size of the hole in
the screw nuts to be inserted; and small round or other shaped cast iron chill rests or
retaining chaplets with centre pins on them would be inserted into these holes in the
pattern over the washer like parts, and be rammed up into the sand over the pattern
or pattern plates from which the moulds are to be made.
And when this mould is turned up and the pattern removed these bearing chaplets
would project up, and the screw nuts would be inserted on them, and when the top
part of the mould was closed over them would grip the nuts and hold them steadily
for being cast and secured in the molten metal, with metal on both sides of the nut.
In some cases the nuts might be made with hollow or projecting V shaped edges, and
so be cast in the plate without the bearing washer parts on either side. When the
plate or bearing washer part referred to, is considerably thicker than the depth of the
nut, then the said chill rests or chaplets would have a small raised circular part round
the pins to raise and retain the nuts in the mould so that they would have metal cast
on each side of them.
1
20:1
100%

page_text: Plate Work together.
T, WILLIAM DICK, Junior, Partner of the Hecla Foundry Company, of 272 Dobbies
Loan, Glasgow, Lanarkshire, do hereby declare the nature of my said invention and
in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement in writing, reference being had to the
accompanying Sheet of Drawings, and to the letters and figures marked thereon,
that is to say :-
My said Invention has reference to improvements in and connected with the casting
of flat plates, or the flat parts of castings, which have to be screwed, fitted, and
secured to other articles, with malleable metal screw nuts in them, specially applicable
for the purpose of screwing or securing the flat plate parts of fire grates and cooking
ranges together, and for other cast-metal and steel work; and which will save much
time and labour in the marking, boring, and tapping of holes for the use of screws in
securing such metal plate work together.
And in order that my said invention, and the manner of performing or carrying
the same into effect or practice, may be properly understood, I have hereunto appended
an explanatory Sheet of Drawings, in which the same reference letters are used to
indicate corresponding parts in all the Figures where shown.
Figure 1 is a sectional elevation of the pattern A, showing the head C of the metal
chaplet, previously cast to shape, resting on its upper "paps" or bearing parts A,
with its centre pin passed through a centre hole a, in the pattern; and Figure 1 A
shows one of the chaplets C, C', detached from the pattern A. Figure 2 shows a
sectional elevation of the sand mould E inverted, with its top part E² closed after the
pattern A, A', has been removed, and the chaplet CC left in the sand mould, and
the screwed nut B inserted on it in the centre hollow pap part E', of the mound before
closing the top part E2 of the mould E, all ready for the molten metal being run in to
form the cast-metal plate D. Figure 3 shows a sectional elevation of the cast-metal
plate D after coming out of the mould E, with the screw nuts B in the casting, and
one of the chaplets CC shown in the casting and one removed. Figures 4 and 5 are
a sectional edge view and a front view, respectively, of two plates D, D³, screwed
together by their countersunk screws b, with the nuts B cast in the one plate D, and
the pap part D, formed all round the one side of the plate D, so that the two
plates D, D², may lie together and form a close joint. The holes for the screws b,
would be marked off and bored and countersunk in the plate D, to suit the nuts B in
the plate D. Figure 6 shows a sectional edge view of a plate in which the nuts B
can be made with V-edges and east in the plate D without paps D¹.
Referring to these Drawings, the nature and novelty of the invention consist,-
when applied to the thin plates A, for grates and such like articles, in which the screw
nuts B to be cast in them may be as thick as the plate itself, in forming a thin

page_text: "
washer-like" pap or bearing A' on the pattern A, either partly on both sides or all
on the one side, as shown in Figure 1, to give thickness to the plate at that part to
strengthen the metal on opposite sides of the nut B to be cast in the plate D. The
patterns A are formed with small holes a in the centre of these
pattern, the size of the hole in the screw nuts B to be inserted; an Parts A¹, of the
small round or
other shaped cast-iron chill rests or retaining chaplets C, with centre pins C¹ on them,
shown separato in Figure 1 A, are inserted into these holes a, in the pattern A over
the washer like parts A', and rammed up into the sand of the lower part B, of the
mould over the pattern or pattern plates A, A', from which the moulds are to be made,
as shown in Figure 2.
And when this mould is turned up and the pattern removed as shown in Figure 2,
the pins C, of these bearing chaplets C, would project up, and the scrow nuts B would
be inserted on them, and when the top part E2, of the mould was closed over them,
would grip the malleable screw nuts B, and hold them steadily for being cast and
secured in the molten metal, with metal on both sides and round the edges at E¹, of
the nut B. In some cases the nuts B might be made with hollow or projecting
V-shaped edges, and so be cast in the plate D, without the bearing washer parts Di
on either side, as shown in Figure 6. When the plate or bearing washer part D'
referred to, is considerably thicker than the depth of the nut B, then the said chill
rests or chaplets C, C, would have a small raised circular part (round the pins (",
to raise and retain the nuts B in the mould, so that the metal would be cast on each
side of them and all round their edges. And two plates might be jointed together
edge to edge in the same plane in this way, by casting the nuts B in a lower flange
piece, as shown at D" in Figures 4 and 5.
Although the screw nuts B have only been shown as cast in the flat plates D, it
will be understood that they might also be used and cast in knee flanges D, at the
ends of the plates D), and be screwed to plates at right angles to each other, when this
was required as shown dotted in at Figure 4 or otherwise, corner angle-iron
pieces could be cast with nuts B in both of the flanges, and have the edges of the two
plates requiring to be secured together at right angles, marked off and bored and
countersunk to suit the nuts in the angle-iron as shown at 6 in Figure 4.
Having now particularly described and ascertained the nature of my said
invention, and the manner of performing the same, I declare that what I claim is,
First. The mode and means of securing together the cast-metal plate work of fire-
grates, cooking ranges, and such like light plate work, consisting in the use of patterns
with paps and metal chaplets to be left in the mould for the supporting and casting of
screw nuts in these plates, substantially in the manner herein described in reference
to and shown in the accompanying Drawings.
Second. The forming of the cast-metal plate work of fire grates, cooking ranges,
and such like light plate work, with internal screw nut or nuts cast in them for securing
the plates together by screw pins, substantially as and in the manner herein described
in reference to and shown in the accompanying Drawings.
Third. The forming of the patterns of the cast-metal plate work of fire-grates,
cooking ranges, and such like light plate work with " paps,” and with centre hole for
the metal chaplets, substantially as herein described in reference to and shown in the
accompanying Drawings.