IMPROVE- MENTS IN MAKING MOULDS FOR CASTING FENDERS, AND IN FITTING BOTTOMS TO FENDERS, WHICH IMPROVEMENTS IN MAKING MOULDS FOR CASTING FENDERS MAY ALSO BE APPLIED TO THE MAKING OF MOULDS FOR CASTING OTHER ARTICLES
Year: 1867

page_text: PROVISIONAL SPECIFICATION left by James Bate and George Asher
at the Office of the Commissioners of Patents, with their Petition,
on the 19th January 1867.
We, JAMES BATE, of Smethwick, in the County of Stafford, Manufacturer,
and GEORGE ASHER, of Birmingham, in the County of Warwick, Designer and
Modeller, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN MAKING MOULDS FOR CASTING FENDERS, AND IN FITTING BOTTOMS TO
FENDERS, WHICH IMPROVEMENTS IN MAKING MOULDS FOR CASTING FENDERS MAY
ALSO BE APPLIED TO THE MAKING OF MOULDS FOR CASTING OTHER ARTICLES," to
be as follows:-
Our improvements in making moulds for casting fenders are as follows:-
We take two patterns, having respectively the figure of the front and back of
the fender, or a part of a fender that is to be cast; we support these patterns
vertically in frames or boxes by embedding them therein in plaster of Paris or
otherwise, the face only of each pattern being exposed. The frames or boxes
carrying the patterns are supported on two rails on which they slide, each box
having on its under side two bearings which fit the said rails. One of the
boxes carrying the patterns may be connected with a crane or other lifting
apparatus and be raised from the rails as herein-after explained.
In making the moulds we employ moulding boxes open at top, and at
front and back; the said moulding boxes have bearings on their under sides
which fit the rails similar to the bearings on the under sides of the frames
carrying the patterns. One of the said moulding boxes is placed on the rails

page_text: between the patterns, and the patterns are drawn close up to the moulding
box on either side and clamped or fixed in that position by means of hooked
arms on one of the frames carrying the moulds engaging with studs on the
other frame. Sand is filled and rammed in the moulding box, and impressions
are thus taken of the front and back patterns, the said impressions being on
the opposite and parallel vertical sides of the mould. On unclamping the
frames carrying the patterns, and separating them by sliding one of them
on the rails, the moulding box carrying the mould may be removed. It is
convenient to lift out of the way by means of the crane, herein-before referred
to, the frame which has been separated from the other frame and mould by
sliding on the rails. The mould may be moved away on the rails, and a
second mould box be placed upon the rails. The raised frame is lowered on
to the rails and drawn up to the other frame with the moulding box between
them and the two frames are clamped together, and another mould made in
the manner already described. When a number of moulds have been made
and placed together in the order in which they have been made the enclosed
spaces between their vertical faces have the figure of the fenders or parts of
fenders to be cast, and the said moulds are secured together and metal cast
in them in the usual way, each of the frames carrying the patterns has a
pattern half get, two of these half gets coming together when the moulds are
properly arranged form the required gets for pouring the metal into the
mould.
In fitting bottoms to fenders we cast a series of tabs on the inside lower
edge of the fender, the said tabs being alternately higher and lower than the
plane in which the bottom is to be fitted. In putting the bottom in its place
the said tabs engage alternately above and below its edge, and by fixing the
bottom by screws at each end it is firmly supported in its whole length by the
said tabs.
Our improvements in making moulds for casting fenders may be applied to
the making of moulds for casting other articles.