IMPROVEMENTS IN TILE-MAKING MACHINERY
Year: 1884

page_text: I FERDINAND BOSSHARDT of the firm of Bosshardt & Grant, Mechanical and
Consulting Engineers and Patent Solicitors of 24 & 32 Bulls Head Exchango
Chambers, Market Place, Manchester in the County of Lancaster, do hereby declare .
the, nature of my Invention for "IMPROVEMENTS IN TILE-MAKING MACHINERY to
be as follows:-
My invention relates more particularly, to that class of tile-making machinery,
where a rotary barrel is employed on which the clay to be formed into tiles is
placed, and has for its object to feed or charge the dies carried by the said barrel with
clay and discharge the tile when formed, self-actingly, to increase its efficiency and
to save labour. To this end the rotary barrel mounted in bearings on a suitable
frame, is provided on its periphery with a suitable number of removable dies on
which the clay is laid or fed by means of a travelling apron and which forms the
bottom or top part of the tile, just as the case may be. Another die is fixed on a
frame which latter is actuated by means of two eccentrics from a shaft situated
below the barrel causing the said die to be brought-into contact with the die on the
barrel at suitable times and thus forming the tile. The said barrel is hollow and
provided with channels in its axis and sides which lead directly underneath the
dies carried by the barrel and onto the top of the die fixed to the said frame.
Steam is admitted into these channels by means of a pipe and expansion valve
which causes the clay when being formed into a tilo to dry to some extent and also
discharge the tile, when the tile has made half of a revolution onto a travelling
apron situated underneath the said barrel. The condensed steam accumulates in
the interior of the barrel and discharges itself by means of grooves formed on one
side of the barrel. The delivery apron and the feed apron aro driven by suitable
gearing, from the driving-shaft the latter transmitting motion at suitable times to

page_text: the said barrel. During the forming of the tile takes place, the barrel is arrested
by means of a notch and catch suitably arranged, and the tile which has made half
of a revolution is discharged onto the travelling apron below the said barrel. As
soon as the top die has formed and left the tile the barrel is released and rotated,
bringing another die directly underneath the top die. The latter is then
immediately fed by the travelling apron, with a fresh layer of clay, the action of
the eccentrics is resumed and the top die is again brought into contact with the die
carried by the barrel for the purpose of formning the tile.
These improvements are equally applicable to existing machines.

page_text: I FERDINAND BOSSHARDT of the firm of Bosshardt & Grant Mechanical &
Consulting Engineers and Patent Solicitors of 24 & 32 Bulls Head Exchange
Chambers Market Place Manchester in the County of Lancaster, do hereby declare
the nature of my invention for "IMPROVEMENTS IN TILE-MAKING MACHINERY
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:—
"
My invention relates more particularly to that class of tile-making machinery
where a rotary barrel is employed on which the clay to be formed into tiles, is
placed and has for its object to feed or charge the dies carried by the said barrel,
with clay, and discharge the tile, when formed, self-actingly.
And in order that my invention may be better understood I have caused to bo
appended hereunto one sheet of drawings marked with letters of reference,
corresponding letters indicating like parts in the various figures.
Fig 1 on the said drawings represents a section of the said machinery. Fig 2 is
a side elevation of the same. Figs 3. 4 & 5 are sections of the die, tile, tile-frame
and arrangement for engaging and disengaging the latter. Figs 6 & 7 are plans
of a number of tiles made in one operation. Fig 8 is a section of a part of the
die and tiles, used for forming the latter. In carrying out my invention I mount
the rotary barrel P in bearings u on the frame v. The said barrel is provided on
its periphery with a suitable number of removable dies M. on which the clay G is
laid or fed by means of a travelling apron b. The latter is supported on one end
by the shaft o, the other end being carried by the shaft & which rotates in the arm
or bracket N hinged to the shaft o. The free end of the said arm or bracket is
provided with an anti-friction pulley g and rests on the barrel P. It will thus be
seen that when the latter is rotated the free end of the apron b will always be in
contact with the periphery of the same in order that the clay G may be deposited
onto the dies without interruption. The said apron is driven from the pulley E
fixed on the barrel axis by means of the chain o.
Another die M¹ is fixed to a
frame, consisting of the rods Z, which is capable of sliding in the bosses S of the
frame v.
The frame carrying the die M¹ is actuated by means of two eccentrics B
and B keyed on the shaft A situated below the barrel P working in steps between
two cross brackets Q & Q' fixed to the rods Z and causing the said die to be brought
into contact with the dies on the barrel at suitable intervals and thus forming the
tile. The shaft A has at one end a worm wheel L keyed thereto which gears into
a worm on the driving shaft J. Motion is transmitted to the barrel P by means of
the segmental pulleys or wheels F and H. which cause the barrel to move a certain
part of a revolution at certain intervals. The barrel P is hollow and provided
with channels in its axis, and channels m in its sides which lead directly under-
neath the dies M, Steam is admitted from an expansion valve D by means of the
pipo a first into the die M¹ and then from there by means of the pipe a into the
channels and the condensed steam being drawn off through the hollow-flanged
bracket K¹ situated at the end of the barrel axis and kept tight thereto by means
of the spring t. The pipe a' is provided with a nozzle K which fits into the
When the
channel and is kept tight by means of the screw and hand wheel t.
steam is admitted into the dies, the clay after being formed into tiles becomes dry
to some extent and gets discharged by the steam onto the travelling apron T
situated underneath the said barrel and carried by the rollers y and y'. Motion is
imparted to the said apron by means of a strap and the pulleys p and p' from the
shaft A.

page_text: When the forming of the tile or tiles has taken place the barrel is arrested by
means of a notch and catch suitably arranged and a fraine placed over each tile or
tiles see Figs 3. 4. & 5. Spring catches C and C¹ are arranged on each side on the
barrel P which serve to hold the frame, viz the tile or tiles in the dies during the
time the barrel rotates.
When the tile or tiles have made half of a revolution the said spring catches
meet the projections V and V formed on the frame v, which causes the frame to
he released and deposited with its contents onto the travelling apron T¹ the tile or
tiles being discharged from the die M by the action of the steam. As soon as the
top die has formed and left the tile the barrel is released and rotated bringing
another die directly underneath the top die.
The latter is then immediately fed by the travelling apron with a fresh layer of
clay, the action of the eccentrics is resumed and the top die is again brought into
contact with the die carried by the barrel for the purpose of forming the tile.
These improvements are equally applicable to existing machines.
Experiments have proved that by these means wet and worked earth will become
dry in a few hours without cracking by a temperature of 70 degrees.
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:-
First, in tile-making machinery the combination of the travelling aprons band T
for automatically feeding the clay and delivering the tiles after being formed with
the rotating barrel P substantially as described and illustrated in the annexed
drawing.
Second. The spring catches in combination with the die M and barrel P for
the purpose specified substantially as described and illustrated in the annexed
drawing.
Third. The application of steam for removing the forned tile or tiles from
their dies.