Improvements in the Manufacture of Machines for Making Moulds for Casting Claw Headed and like Hollow Headed
Year: 1884

page_text: Improvements in the Manufacture of Machines for Making
Moulds for Casting Claw Headed and like Hollow Headed
I FREDERICK THEOPHILUS GILES of Stanley House, Coronation Road, Bed-
minster, near Bristol in the county of Somerset Nail Manufacturer do hereby
declare the nature of the said invention for "IMPROVEMENTS IN THE MANUFACTURE
OF MACHINES FOR MAKING MOULDS FOR CASTING CLAW HEADED AND LIKE
HOLLOW HEADED NAILS AND OTHER SIMILAR HOLLOW ARTICLES HAVING SHANKS
to be as follows :-
"
This invention relates to improvements in the manufacture of machines for
making moulds for casting claw headed and like hollow headed nails and other
similar hollow articles having shanks or stems.
Hitherto in making moulds for this class of goods it has been the practice to
have a set of loose sprays placed upon a pattern board or odd side; a half mould
is taken from one side of the sprays. The half mould thus formed with the sprays
and pattern board are then reversed and the pattern board or odd side being
removed a half mould taken from the opposite side of the sprays forms the second
half mould; the two halves of the mould are then separated and the shank side is
pricked by hand and the patterns turned out from the other half mould and the
two half moulds are then clamped together and raised on end ready for pouring.
This method of making moulds is tedious and expensive and the object of my
invention is to so construct the machines for making the moulds that moulds for
this class of goods can be made and pricked in a manner similar to that employed
in making moulds for nails flat under the heads.
Now according to my invention I make the impressions or models of what are
known in the trade as the head and shank plate (upon which the moulds are to be
made) in sections or segments of one or more patterns or sprays each from any
suitable metal or material which can be cast, moulded or made in any known
mauner to the required shape and then fix the sections or segments in a frame
or recessed plate in such a manner and in such number as to form a suitable
surface or plate for moulding upon and so that when the half mould for the heads
also the half mould for the shanks are made and closed together they will exactly
correspond with each other as regards centres and shape.

page_text: In practice I have found the following method of making the said sections or
Begments to answer well.
"
"
I make in the usual way what is known in the trade as an "Original." I fix this
Original" upon a suitable surface for moulding from it, I then make in any known
manner & half mould of the top side also of the under or shank side of the
Original," this being done I remove the "Original" from the said surface upon
which it was placed and put in exactly the same position a strip of metal or other
suitable substance about the size of the section or segment required, I then take a
half mould from it in any usual way after which I prepare a "Get" at one end for
the purpose of receiving the said suitable metal or other material. I theu close
this half mould upon the said half. mould of the under or shank side of the
"Original" and cramp both together, the metal or inaterial is then poured in and
a section or segment bearing the impression of the under or shank side will be
formed, I then make a half mould upon a planed plate, I remove it from the plate
and form a "Get" as before mentioned for receiving the metal or material I then
close it on the said half moulds of the top side of the "Original" and cramp both
together, the metal or material is then poured in and a model of the top side of the
Original" is formed in the desired shape to exactly correspond with the section
or segment for the under or shank side. A sufficient number of patterns or models
are then made therefrom of metal or other suitable material to cover the desired
space for the head plate and from the model of the section or segment for the
under or shank side a sufficient number of sections or segments are made in metal
or other suitable material to form what is known as the shank or pricker plate
which are fixed and secured in the said frame or recessed plate in any known
manner.

page_text: I FREDERICK THEOPHILUS GILES of Stanley House Coronation Road, Bed-
minster near Bristol in the county of Somerset, Nail Manufacturer do hereby
declare the nature of the said invention for "IMPROVEMENTS IN THE MANUFACTURE
OF MACHINES FOR MAKING MOULDS FOR CASTING CLAW HEADED AND THE LIKE
HOLLOW HEADED NAILS AND OTHER SIMILAR HOLLOW ARTICLES HAVING SHANKS
"
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 improvements in the manufacture of machines for
making moulds for casting claw headod and the like hollow headed nails and other
similar hollow articles having shanks or stems.
Hitherto in making moulds for this class of goods it has been the practice to
have a set of loose sprays placed upon a pattern board or odd side; a half mould is
takon from one side of the sprays. The half mould thus formed with the sprays
and pattern board are then reversed and the pattern board or odd side being
removed a half mould taken from the opposite side of the sprays forms the second
half mould; the two halves of the mould are then separated and the shank side is
pricked by hand and the patterns turned out from the other half mould and the two
half moulds are then clamped together and raised on end ready for pouring.
This method of making moulds is tedious and expensive and the object of my
invention is to so construct the machines for making the moulds, that moulds for
this class of goods can be made and pricked in a manner similar to that employed
in making moulds for nails flat under the heads.
Now according to my invention I make the impressions or the models or patterns
of what are known in the trade as the head and shank plate (upon which the
moulds are to be made) in sections or segments of one or more patterns or sprays
each from any suitable molten metal, or from other material which can be cast,
moulded or made in any known manner to the required shape and then fix the
sections or segments in a frame or recessed plate in such a manner and in such
number as to form a suitable surface or plate for moulding upon and so that when
the half mould for the heads also the half mould for the shanks are made and closed
together they will exactly correspond with each other as regards centres and shape.
In some cases I find it advantageous to attach the head models or patterns to a
plain plate.
In order to enable my invention to be fully understood I will describe the same
by reference to the accompanying drawing which illustrates my invention as
applicable to the manufacture of machines for making moulds for casting hollow
headed nails and in the several figures of which similar letters represent similar
parts.
In practice I have found the following method of making the hereinbefore
described sections or segments to answer well.
"
I make in the usual way what is known in the trade as an Original" one of
which is represented in plan and cross section at figures 1 and respectively.
I fix this "Original" upon a suitable surface for moulding from it, I then make
in any known manner a half mould of the top side also of the under or shank side
of the "Original; this being done I remove the "Original" from the said
surface upon which it was placed and put upon the said surface in exactly the
same position as was occupied by the "Original" a strip of metal or other suitable
"

page_text: "
"
Get "
substance shown in plan and end elevation at ngures 3 and 4 respectively, about
the size of the section or segment required. I then take an impression in a half
mould from the said strip of metal in any usual way after which I prepare a
at one end of the half mould for the purpose of receiving the said suitable molten
metal or other material. I then close this half mould upon the said half mould of
the under or shank side of the "Original" and cramp both together, the molten
metal or material is then poured into the mould and a section or segment bearing
the impression or exact shape of the under or shank side of the nail heads will be
formed. A section or segment so moulded is shewn in plan, cross section and
longitudinal section at figures 5 6, and 6ª respectively. I then prepare a half
mould upon a planed plate; I remove it from the said planed plate and form a
Get" at one end of the said half mould for receiving the molten metal or material;
I then close the half mould on the hereinbefore described half mould of the top
side of the " Original" and cramp both the half moulds together; the molten
metal or material is then poured in through the " Get" therein and a model of the
top side of the "Original" is formed (such as is shewn in plan at figure 7 and in
cross section at figure 8) in the desired shape to exactly correspond with regard to
the centres of the nail heads and with the section or segment for the under or
shank side (figures 5 and 6). A sufficient number of patterns or models are then
cast in metal or other suitable material from moulds formed from the pattern
shewn in figures 7 and 8 to cover the desired space on the head plate which is
sbewn in plan and elevation partly in section at figures 9, and 10, respectively;
from moulds formed from the model of the section or segment for the under or
shank side figures 5 and 6, a sufficient number of sections or segments are cast in
metal or other suitable material to form what is known as the shank or pricker
plate shewn in plan, elevation-partly-in-section, and cross section at figures 11, 12
and 13 respectively.
a represents the frame or recessed plate on which the sections or segments b, are
fixed and secured in any suitable known mannor such as by bolts c, and nuts &;
In figures 9 and 10 the sections, segments or patterns e, of the top side are shewo
fixed to a plane head plate f, which I generally employ for this purpose but in some
cases I fix them to recessed plates similar to that shewn for the pricker plate in
figures 11, 12 and 13 but it is then necessary to cast the top or head sections,
segments or patterns with a plate in a similar manner to that in which the shank
plate is cast with the strip or plate of metal shewn in figures 3 and 4.
The mould having been taken of the head plate made as hereinbefore described
the mould of the pricker plate is taken and the holes pricked therein by the
ordinary mechanical means to form the shanks of the nails.
g, figures 11, 12 and 13, are the half sprays which I fix to the sections or
segments on the pricker plate to correspond with those formed on the head sections,
segments or sprays. h, h, are pins which are passed through plates i, i, in the ends
of the recessed plate to bring this part of the plate level with the top of the
pricker segments; j, j, is the main feeder or ridge fixed on the top of the central
projection K.
Figure 14 is an elevation of a claw beaded or hollow headed nail made from
a mould formed from head and sbank plates manufactured according to my
invention.
I have described and illustrated my invention as applied to the manufacture of
machines for making moulds for casting claw headed and like hollow headed nails
its application to the manufacture of machines for making moulds for casting other
similar hollow articles having shanks or stems will be understood without further
description.
In order to make the sections and segments of the head and shank plates
accurately correspond with each other both as regards the centres and the shape
I prefer to employ the means substantially as described for this purpose in the
former specification of William Giles No 4774 dated the 12th of March 1884.

page_text: 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
(1). The herein described method of making head and shank or pricker plates
for making moulds for casting claw-headed and like hollow-headed nails and
other similar hollow articles having shanks or stems by forming the patterns
therefor in sections or segments and then fixing the shank sections or segments
in a frame or recessed plate and the head sections or segments on a like frame
or plate or on a plane plate substantially as and for the purpose hereinbefore
described.
(2). The herein described method of making the sections or segments to form
the head and shank or pricker plates substantially as hereinbefore described and
illustrated by the accompanying drawing.
(3). The manufacture of machines in segments or sections for making moulds
for casting claw headed and like hollow headed nails and other similar hollow
articles having shanks or stems as hereinbefore described.
G. F. REDFERN,
4, South Street, Finsbury, London,
Agent for the Applicant.