IMPROVEMENTS IN MOULDING MACHINERY, BOXES, AND CORES; SUCH IMPROVEMENTS ARE IN UNISON AND APPLICABLE FOR MOULDING ALL SOLID, HOLLOW, CIRCULAR, CYLINDRICAL, SQUARE, OVAL, AND VARIOUS OTHER PATTERNS FOR METAL AND OTHER CASTINGS, AND THE SAID MECHANICAL CONTRIVANCES EMPLOYED IN MOULDING
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by Harold Tyrrell Grainger at the Office
of the Commissioners of Patents on the 19th May 1880.
HAROLD TYRRELL GRAINGER, of 38, New Church Road, in the Parish of Saint
Giles, Camberwell, in the County of Surrey, Iron Founder and Mechanical
Engineer. "IMPROVEMENTS IN MOULDING MACHINERY, BOXES, AND CORES; SUCH
IMPROVEMENTS ARE IN UNISON AND APPLICABLE FOR MOULDING ALL SOLID,
HOLLOW, CIRCULAR, CYLINDRICAL, SQUARE, OVAL, AND VARIOUS OTHER PATTERNS
FOR METAL AND OTHER CASTINGS, AND THE SAID MECHANICAL CONTRIVANCES
EMPLOYED IN MOULDING."
My Invention embraces and relates to improvements in the construction of
moulding machinery for moulding articles in iron, brass, and other metals, either
horizontally, vertically, or at any other desired angle, whereby several articles,
either circular, square, oval, cylindrical, or of other form or shape, and whether
solid or hollow or of various lengths and diameters, can be moulded simultaneously
in one or more moulding boxes, and castings-made under my improved mode or
process will be perfectly moulded and correct to pattern, of any indicated weight,
diameter, or length than hitherto made, and, as in the case of sash weights, one
pattern only is required to mould various sizes and indicated weights; thus I
dispense with a multiplicity of patterns for various sizes, as is now the case.
My moulding machine is constructed of one or several moulding benches or
tables, one or more of which is fixed or stationary, and one or more I construct so
as to slide or move parallel on grooved or flanged wheels running on rails, for the
purpose of carrying the patterns to and fro to be moulded, by motion given or
transmitted by pulley, drum, worm, spur, mitre, or bevelled wheel, pinion, rack, and
fly wheel, or other motion.
My moulding box or boxes are constructed, not as ordinary iron or brass
founders' boxes are, with top and drag (or bottom), but the top, bottom, sides, and
ends can be made in one piece or otherwise, and I sometimes eonstruct them with
open or loose tops or ends, and in some instances with ends partially left open to be
afterwards fitted or otherwise.
In either end of box or boxes I propose to make a circular or other shaped
opening, or a series of openings of certain sizes for the reception of loose sliding
collars.

page_text: Fillets can be cast on each side of moulding boxes at certain measurements, to
admit of a false end being inserted between such fillets when moulding from
patterns of a certain indicated length or weight.
One or more ribs or fillets can be cast at bottom of box or boxes longitudinally,
to serve as a guide or guides to rammers, which may be made of wood, metal,
or other material, having slots to correspond with as many patterns as are being
moulded.
At certain measurements or distances from end of moulding box or boxes I fit
and affix by bolts, nuts, screws, or otherwise, to the stationary bench or benches,
plummer blocks or bearings for spindle or spindles carrying the patterns, and to
correspond and be parallel with collar holes in end of moulding box or boxes for
patterns to slide or rotate in.
On the top of sliding table or tables I also affix by bolts, nuts, screws, or
otherwise, plummer blocks in line and parallel to those on stationary benches for
spindles to also slide and rotate in, and at end of sliding table or tables I fit and
affix cross head or heads to carry gear for transmitting motion, either rotary or
otherwise, to patterns when being moulded horizontally.
The cross head or heads, plummer blocks, and moulding boxes above referred to,
can be by mechanism raised from bench or benches or lowered according to the
various diameters of patterns to be moulded.
One or more guide rods can be fixed parallel to pattern carrying spindle or
spindles, either round, square, or archimedean, and when motion is given or
transmitted by hand, steam, or other motive power to the spindles and guide rods,
the patterns may then be withdrawn from mould with precision.
When cores are necessary I propose to use as such, in some instances, vitrified
clay, in others sand, carboniferous substances, or other suitable material diluted
with clay water, molasses, size, or other fluid to increase the adhesive properties of
such for core making, and in others hay bands and plastic clay, chilled iron, or any
other suitable material.
In the sash weight moulds I introduce cores, either circular or any other suitable
shape, with dome top, cone, or cap, having an aperture through same at or about
centre for reception of other core or cores, which may be composed of either core
sand, chilled iron, vitrified clay, or other suitable material, as aforesaid, having
indicated on said cores' dome top, cone, or cap, figures, numbers, or letters indicating
name, size, weight, or number of casting to be made.
Having described the several materials, parts, and appliances used in con-
structing my improved method of moulding, and combination of the various parts
and the mechanical action thereof, castings can be made more expeditiously by this
new process, and also at far less expense than heretofore.