INFROVE- MENTS IN DIES OR MOULDS OF MACHINES USED FOR MANUFACTURING BRICKS, TILES, PIPES, AND OTHER LIKE ARTICLES
Year: 1873

page_text: PROVISIONAL SPECIFICATION left by Joseph Hamblet and George
Davies at the Office of the Commissioners of Patents, with their
Petition, on the 4th March 1878.
We, JOSEPH HAMBLET, of West Bromwich, in the County of Stafford,
Brickmaker, and GEORGE DAVIES, of West Bromwich aforesaid, Brick-
maker, do hereby declare the nature of the said Invention for "INFROVE-
MENTS IN DIES OR MOULDS OF MACHINES USED FOR MANUFACTURING BRICKS, TILES,
PIPES, AND OTHER LIKE ARTICLES,” to be as follows :—
-
Our Invention has reference to the dies or moulds of such brick-
making and other like machines as manufacture bricks and other
articles by producing a stream or column of clay of the required
sectional figure, which stream or column by being divided transversely
is cut into bricks, tiles, pipes, and other articles. The said moulds as
ordinarily constructed consist of a box or frame in which are secured
blocks or pieces of wood having such figures as produce a wide funnel-
shaped opening at the side or face at which clay from the rollers enters,
and tapering to a rectangular or other required figure at the side or face
from which the shaped or fashioned stream of clay emerges. The blocks

page_text: or pieces of wood referred to have their inner or acting faces covered
with smooth plates of brass.
The forcing of the clay through the die or mould for the purpose of
producing a stream or column of the required section, produces a great
strain upon the parts of the machine concerned in effecting it, and the 5
resistance of the clay is largely increased by its friction against the
sides of the mould. Where the die or mould is angular the parts of the
stream or column of clay moulded or fashioned by the angular parts are
frequently imperfect in form.
The object of our Invention is to diminish the friction between the 10
clay and the mould, and to render the stream or column of clay
emerging therefrom more perfect in form than that produced by dies or
moulds of the ordinary kind.
Our said Invention consists of the improvements herein-after described,
whereby the surfaces of the moulds are supplied during the passage of 15
the clay over the said surfaces with oil, water, or other lubricant, and
the friction between the mould and the clay much diminished.
We will describe our Invention in connection with a rectangular die
or mould. On the upper side of the box or frame of the mould two
reservoirs for oil, water, or other lubricant are fixed. These reservoirs 20
are situated respectively near the ends of the frame, and are connected
with pipes or passages passing through the upper wooden portion of the
mould and communicating with slots or recesses in the acting faces of
the mould at or near the narrowest part or the part where the clay
is most compressed. The stream or column of clay in passing the 25
said slots receives a portion of the lubricant whereby its passage from
the mould is much facilitated, and the figure which has been given.
to it is preserved from injury on its final passage from the die or mould.
The precise position of the slots delivering the lubricant, as well as their
extent, varies with the kind of mould.
.
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