IMPROVEMENTS IN THE CONSTRUCTION OF MOULDERS NAILS AND CHAPLETS".
Year: 1882

page_text: LETTERS PATENT to William Motherwell, of Glasgow in the County of Lanark
North-Britain for an Invention of "IMPROVEMENTS IN THE CONSTRUCTION
OF MOULDERS NAILS AND CHAPLETS".
PROVISIONAL SPECIFICATION left by the said William Motherwell at the
Office of the Commissioners of Patents on the 10th October 1882.
WILLIAM MOTHERWELL, of Glasgow in the County of Lanark, North Britain,
"IMPROVEMENTS IN THE CONSTRUCTION OF MOULDERS' NAILS AND CHAPLETS,"
This Invention relates to Improvements in the construction of moulders nails
and chaplets, and in the appliances connected therewith, which are used in
moulding and casting to the cores or core bars, and regulate the thickness of
metal of pipes, or hollow and other metal castings. In forming such nails and
chaplets hitherto, the stems, nails, or studs which carry the plate used to support
the core, have been usually forged, and have their upper ends turned to exact sizes
to form the rivets by which they are secured to the plate, and at the same time to
form a bearing shoulder on each stud for supporting the plate. The rivetting of
the studs to the plate has had to be effected while cold, or the studs be reheated
for that purpose.
By the present Invention however, the stems, nails, or studs are struck or formed
while hot in gripping cresses or dies, with broad bearing solid heads or shoulders,
and to the exact length between the shoulders, and they are at once, fitted into the
holes in the plate and rivetted without requiring re-heating. The rivet part over
the shoulder is formed to fit the corresponding hole in the plate, while in the
gripping cress or die, by the beating down cress or bolster for forming the shoulder
and head; and the chaplet or nail is thus completed at much less cost than by the
ordinary mode of construction.
In forming the nails or stems used with the curved or other shaped plates for
supporting or steadying cylindrical cores for casting pipes or other articles, the nail
or stem is indented or roughened near the shoulder by the gripping cresses or dies,
while being struck in the cress or die, so that it may the better unite with or adhere
to the metal of the casting, than the ordinary twisted stems heretofore used.

page_text: .
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Motherwell in the Great Seal Patent Office on the
5th April 1883.
WILLIAM MOTHERWELL, of Glasgow in the county of Lanark, North Britain
"IMPROVEMENTS IN THE CONSTRUCTION OF MOULDERS NAILS AND CHAPLETS
"
My said Invention relates to improvements in the construction of moulders'
nails and chaplets, which in moulding and casting are fitted to the cores or core
bars, and regulate the thickness of metal of pipes, or hollow or other metal
castings. In forming such nails and chaplets hitherto, the stems, nails, or studs
which carry the plate used to support the core, have been usually forged, and have
their upper ends turned in a lathe to exact sizes to form the rivets by which they
are, secured to the plate, and at the same time to form a bearing shoulder on each
stud for supporting the plate.
The rivetting of the studs to the plate has had to be effected while cold, or the
studs had to be relented for that purpose.
By the present Invention however the stems, nails, or studs aro struck or formed
while hot or cold in gripping cresses or dies, with broad bearing solid heads or
shoulders, and to the exact length between the shoulders, and they are at once
fitted into the holes in the plate and rivetted without requiring re-heating. The
rivet part over, the shoulder is formed to fit the corresponding hole in the plate
while in the gripping cress or die, by the beating down cress or bolstor for forming
the shoulder and head; and the chaplet or fail is thus completed at much less cost
than by the ordinary mode of construction. In forming the nails or stems used
with the curved or other shaped plates for supporting or steadying cylindrical cores
for casting pipes or other articles, the nail or stem is indented or roughened near
the shoulder by the gripping cresses or dies while being struck in the cress or dic,
so that it may tho better unite with or adhere to the metal of the casting, than the
ordinary twisted stems heretofore used.
My Invention is illustrated by the accompanying Drawings, in which Figure 1 is
a longitudinal section, and Figure 2'an end elevation of the improved chaplet of a
form adapted for use in supporting flat cores in casting.
Figure 3 shows the stud A in its unfinished forin, and Figure 4 shows the stud A
after it has been struck in a cress or die, and is ready for rivetting to the plate .B.
In forming the stud, the shank A is held in a pair of gripping tongs, while the
head A' rests on an anvil or bearing plate. The bearing shoulder a and rivet
part a' are formed at one operation by a cress or die which may either be struck
by a hammer by hand, or which may be fitted in the bolster cross of a machine
similar to a punching machine. Holes are punched in the plate B into which the
rivet part al of each stud is fitted, and that part is rivetted over to complete the
chaplet.
Figure 5 is a section, and Figure 6 an end elevation of a form of nail or chaplet
adapted for holding up a round core in casting, the plate. B being formed to fit the
periphery of the core. The nail part A is in this case struck or formed out of a
Jength of iron or steel rod to the shape shown in Figure 7. The bearing shoulder a
and rivet part a² are formed at one operation by a cress or die in which the rod A
is gripped and struck by preference while hot. The nail A is at the same operation
indented or roughened below the shoulder at a. The nail A is rivetted to the
curved plate B while the nail is hot, and the cliplet is thus formed at,much less.
cost and witli less labour than by the ordinary mode.

page_text: Having now described the nature of my said Invention, and the manner in which
the same is to be performed, I declare that what I claim is,-
First. The mode of constructing moulders' nails or chaplets, which consists in
striking the nail or stud in a cress or die to form a bearing shoulder and a rivet
part by which the plate of the chaplet is rivetted to the nail or stud, substantially
as herein described and illustrated by the accompanying Drawings.
Second. A moulders' nail or chaplet formed by striking the nail or stud in a cress
or die to form a shoulder and rivet part, and rivetting such nail or stud to a metal
plate, substantially as herein described and illustrated by the accompanying
Drawings.
4
In Witness Whereof, I, the said. William Motherwell, bave hereunto set my
hand and seal this second day of April, in the year of our Lord One thousand
eight hundred and eighty three.
WILLIAM MOTHERWELL. (L.S.)