IMPROVEMENTS IN MAKING MOULDS FOR CASTING NAILS
Year: 1884

page_text: I SHADRACH WILLIAMS of Aston near Birmingham in the County of Warwick
Manager of Works, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN MAKING MOULDS FOR CASTING NAILS," to be as follows:-
My invention has reference principally to moulds for casting such nails as have
heads of smaller diameter at top than at the part where they join the stem or body
of the nail such for example as nails having heads of the kind called from their
figure mushroom heads.
My invention is however also applicable to the making of moulds generally for
casting nails having ornamental heads.
In making a mould according to my invention for casting nails I proceed as
follows. I take a metallic plate having on it a series of rows of pattern heads of
the kind it is required the nails to be cast shall have. This plate which I will call
the pattern plate is without perforations. I take an impression in sand of this
pattern plate and thereby produce a half mould having the required impressions
for producing the heads of the nails. I make another half mould containing
impressions for producing the bodies of the nails in the following way. I take a
plain plate having in it a series of rows of holes exactly corresponding with the series
o frows of heads on the pattern plate herein before described. I will call this plate
the guide plate. I form a half mould on the guide plate and prick the required
holes or cavities for casting the bodies of the nails by means of a series of prickers
fixed on a plate the prickers being of the size of the bodies of the nails to be cast
and fixed in a series of rows corresponding to the holes in the guide plate. The
prickers are passed through the holes in the guide plate and the half mould formed
on the guide plate is thus pricked with the number of cavities for casting the bodies
of nails corresponding in number and position with the impressions of the heads in
the first made half mould. When the two half moulds thus made are brought and
secured together in the ordinary way each impression of a head on one half mould
coincides with an impression or cavity having the figure of the body of a nail in
the other half mould. By casting in the mould made as described nails having
heads of the kind described are produced.
Instead of forming the half mould in which the bodies of the nails are cast in the
way described the prickers may be passed through the guide plate before the sand
is moulded on it

page_text: Where the underside of the head is to have an ornamental figure the required
ornament is made on the guide plate around each of the guide holes in the said
guide plate.
The pricking may conveniently be effected by means of the machine described
and claimed in the specification of Letters Patent granted to me on the twenty-third
day of August 1882 Nº 4043 but I do not limit myself to the use of this machine
as other machines having a like action may be employed. Or the pricker plate may
be worked by hand.
1
1004

page_text: I SHADRACH WILLIAMS of Aston near Birmingham in the County of Warwick,
Manager of Works do hereby declare the nature of my invention for "IMPROVE-
MENTS IN MAKING MOULDS FOR CASTING NAILS" and in what manner the same is
to be performed to be particularly described and ascertained in and by the
following statement:-
My invention has reference principally to moulds for casting such nails as have
heads of smaller diameter at top than the part where they join the stem or body of
the nail, such for example as nails having heads of the kind called, from their
figure, mushroom heads
My invention is however also applicable to the making of moulds generally for
casting nails having ornamental heads.
In making a mould according to my invention for casting nails I proceed as
follows:-
I take a metallic plate having on it a series of rows of pattern heads of the kind
it is required the nails to be cast shall have. This plate which I will call the pattern
plate is without perforations. I take an impression in sand of this pattern plate
and thereby produce a half mould having the require impressions for producing
the heads of the nails. I make another half mould containing impressions for
producing the bodies and undersides of the heads of the nails in the following way.
I take a plate having on it the ribs for producing the "gets" and also a series of
rows of disc like projections corresponding in size, position and number with the
impressions in the head half mould. I make a half mould on the said plate and
place the half mould so made face downwards upon the guide plate of the pricking
machine, the said guide plate having in it a series of rows of holes exactly
corresponding with the series of rows of heads on the pattern plate herein before
described. I prick the required holes or cavities for casting the bodies of the nails
by means of a series of prickers fixed on a plate the prickers being of the size of
the bodies of the nails to be cast and fixed in a series of rows corresponding to the
holes in the guide plate. The prickers are raised through the holes in the guide
plate and the half mould supported on the guide plate is thus pricked with the
number of cavities for casting the bodies of nails corresponding in number and
position with the impressions of the heads in the first made half mould. When the
two half moulds thus made are brought and secured together in the ordinary way,
each impression of a head on one half mould coincides with an impression or
cavity having the figure of the body and underside of the lead of a nail in the
other half mould. By casting in the mould made as described, nails having heads
of the kind described are produced.
The pricking may conveniently be effected by means of the machine described
and claimed in the specification of Letters Patent granted to me on the twenty
third day of August 1882 N° 4043 but I do not limit myself to the use of this
machine as other machines having a like action may be employed. Or the pricker
plate may be worked by hand.
Figure 1 of the accompanying Drawings represents in plan and Figure 2 in side
elevation, the pattern plate by the use of which I form the head half mould;
Figure 3 represents in plan and Figure 4 in side elevation, a nearly similar pattern
p'ate by the use of which I make in the shank half of the mould impressions for
forming the undersides of the heads or those parts of the heads which immediately
ein the shanks; Figure 5 represents in longitudinal section a pricking machine

page_text: which I use for pricking or moulding the shank half of the mould after the said
shank half of the mould has been impressed with the pattern plate Figures 3 and 4;
Figure 6 represents in longitudinal section the head half mould; Figure 7 the
shank half mould and Figure 8 the two half moulds Figures 6 and 7 brought
together ready for casting the nails.
The pattern plate Figures 1 and 2 is unperforated and has on its acting face a
series of rows of pattern heads a, a of the kind it is required the nails to be cast
shall have and also a series of ribs b for forming the "gets" in the head half
mould.
The pattern plate Figures 3 and 4 is also unperforated and has on its acting face
disc like projections c, c for forming the impressions in the shank half mould for
casting the undersides of the heads and the said plate also has ribs b for forming
the "gets" in the shank half mould. The projections c, c on the pattern plate
Figures 3 and 4 exactly correspond in number and position with the series of rows
of pattern heads a, a on the pattern plate Figures 1 and 2.
I use in the pricking or moulding machine Figure 5 or other like machine, or
with a pricking plate worked by hand, a pricker guide plate marked d through the
holes in which the series of prickers e on the rising and falling pricker plate f pass
to prick the holes or cavities in the half mould for casting the bodies of the nails.
The holes in the guide plate d agree in number and position with the pattern
heads a, a on the plate Figures 1 and 2 and also with the disc like projections c, c on
the second pattern plate Figures 3 and 4.
Each of the said holes in the guide plate d is surrounded by a disc of the same
size and thickness as the discs c, c on the pattern plate Figures 3 and 4, so that
when the half mould is placed face downwards upon the guide plate & the disc like
projections surrounding the holes in the guide plate enter and support the disc like
depressions in the half mould and prevent injury to the said depressions during the
pricking operation.
In making a mould according to my invention I take an ordinary mould box
filled with sand and impress the said sand with the pattern plate Figures 1 and 2
and thereby produce the half mould represented in Figure 6, the said half mould
having the required impressions k for producing the heads of the nails. I next form
the shank halt mould in the following way. I take au impression in a second half
mould box from the pattern plate Figures 3 and 4 and thereby form shallow
impressions having figures the exact counter parts of the undersides of the heads
or those parts which immediately join the shanks in the finished nails, the said
shallow impressions corresponding in number and position with the head impressions
in the head half mould. I next place the partly made shank half mould in the
machine represented in Figure 5 the said half mould being placed face downwards
on the guide plate d in the position represented. The position of the shank half
mould upon the guide plate d is determined by three pegs on the pricker plate f
passing through holes in the guide plate d and taking into holes in snugs on the
half mould box. as is well understood. By the adjustment described of the half
inould box upon the plate d the centre of each disc like impression in the half
mould is made to coincide with the axis of the corresponding guide hole in the
pricker guide plate d. The half mould having been thus arranged and fixed in the
machine the pricker plate f is raised and the several prickers e, e are made to pass
through the holes in the guide plate d and prick in the sand in the mould box the
required impressions for the stems or shanks of the nails as represented in Figure 5.
By an examination of the said Figure 5 it will be seen that the prickers pierce the
centres of the disc like impressions made in the face of the half mould by the
pattern plate Figures 3 and 4.
There is thus formed the shank half mould represented in Figure 7 the said half
mould Figure 7 having besides the impressions h for the shanks ring like
impressions i around the shank impressions h. The said ring like impressions i in
the shank half mould Figure 7 when the head half mould Figure 6 is combined

page_text: with it in the manner represented in Figure 8, form continuations of the head
impressions in the head half mould.
The mould is now ready for casting the nails.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is of "Improvements in making moulds for casting nails" :-
First Forming the head half mould by the use of an unperforated pattern
plate of the kind represented in Figures 1 and 2 of the accompanying Drawings.
Secondly The use of the unperforated pattern plate represented in Figures
and 4 of the accompanying Drawings for moulding in the shank half mould,
impressions for forming the undersides of the heads of the nails.
Thirdly Making the perforated guide plate used for supporting the shank half
mould during the pricking operation with disc like projections surrounding the
pricker guide holes in the said plate, the said projections on the guide plate filling
and supporting the disc like impressions in the shank half mould during the
pricking operation substantially as herein before described and illustrated in the
accompanying Drawings.
Jantahan 100%.