Year: 1887

page_text: Date of Application, 20th.Oct., 1887
Complete Left, 14th Apr., 1888
Complete Accepted, 18th May, 1888
I FRED HUDSON, of Union Castor Works, Sheep Street, Birmingham, in the
county of Warwick Manufacturer, do heroby declare the nature of this invention to
be as follows:-
This invention relates to the manufacture of rollers for castors, which are composed
of clay, or similar compounds, and has for its object the compressing of the clay
forming such rollers, in a cylindrical die, with falso sliding bottom and a compressing
top tool, after the following manner :-
I provide a cylindrical die of a greater depth than the thickness of the roller, and
having an internal diameter, equal to the outer diameter of the said roller. This
would rest upon the bed of the press or other suitable machine. Within this die, and
working upwards from the bottom, I provide a false or sliding bottom, which is
supported or carried upon rods or other firm base.
Through the centre of this false bottom, I prepare a hole to receive a pin, which is
carried from the bed &c. of the press, underneath, and made stationary, so that when
the bottom rises, it slides within the die, and on the pin. This pin extends upwards,
beyond the top of the false bottom (when the latter is in its normal position) a distance
little more than the thickness of the roller.
The top tool is made to enter the die, upon its descent, and to within a distance of
the false bottom, equal to the thickness of the roller, and in its centre 1 provide a
hole, into which the upper end of the wire enters; this hole being further extended
to the outside.
Thus when the clay is put in the die, the top tool is brought down, and if there is
more clay than required, the surplus is forced upward through the hole, ere it
reaches the top of the pin, when the escape is then cut off; and by reason of the top
tool still descending the clay is compressed into shape.
The top tool having been withdrawn, by suitable arrangements of mechanism, the
bottom tool is lifted, stripping the roller off the pin, until it reaches the top of
the cylindrical die, when it may be removed.
Rollers made in this manner, I find are not likely to crack or break, as they do
in the ordinary method of manufacture, where there is a top and bottom die,
meeting about mid thickness of the roller.
1
1007
CHARLES T. POWELL,
4, Cherry Street, Birmingham,
Applicant's Agent.

page_text: Improvements in the Manufacture of Rollers for Castors.
I FRED HUDSON, of Union Castor Works, Sheep Street, Birmingham, in the
county of Warwick, Manufacturer, do hereby declare the nature of this invention
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 the manufacture of rollers for castors, which are composed
of clay or similar compounds, and has for its object, the compressing of the clay,
forming such rollers, in a cylindrical die, with false sliding bottom, and a compressing
top tool, after the following manner:
I provide a cylindrical die of a greater depth than the thickness of the roller,
and having an internal diameter, equal to the outer diameter of the said roller. This
would rest upon the bed of the press or other suitable machine. Within this die,
and working upwards from the bottom, I provide a false or sliding bottom, which
is supported or carried upon rods or other firm base.
Through the centre of this false bottom, I prepare a hole to receive a pin, which is
carried from the bed &c. of the press underneath, and made stationary, so that when
the bottom rises, it slides within the die and on the pin. The pin extends upwards,
beyond the top of the false bottom (when the latter is in its normal position) a
distance little more than the thickness of the roller.
'
The top tool is made to enter the die upon its descent, and to within a distance
of the false bottom, equal to the thickness of the roller, and in its centro I provide
a hole, into which the upper end of the wire enters, this hole being further extended
to the outside.
Thus when the clay is put in the die, the top tool is brought down, and if there
is more clay than required, the surplus is forced upwards through the hole, ere it
reaches the top of the pin, when the escape is then cut off, and by reason of the
top tool still descending, the clay is compressed into shape.
The top tool having been withdrawn, by suitable arrangements of mechanism, the
bottom tool is lifted, stripping the roller off the pin, until it reaches the top of the
cylindrical die, when it may be removed.
Rollers made in this manner, I find are not likely to crack or break, as they do in
the ordinary method of manufacture, where there is a top and bottom die, meeting
about mid thickness of the roller.
'
- Having now described the nature of this my invention, I will now proceed to morė
particularly explain how it may be performed, having reference to the accompanying
illustrative sheet of drawings, upon which are figures and letters of reference, like
letters referring throughout the several views to the same thing or part; and
in which:
Fig. 1 is a general view, shewing a practical working of the invention.
Fig. 2 is a side sectional view of the tools as seen when the roller has been
compressed.
Fig. 3 is a front sectional view of the tools under similar conditions.
Fig. 4 is an inverted plan of the underside of Figs. 2 & 3, shewing the position of
the guide rods, bolts &c. -
.
Fig. 5, shews an enlarged sectional view of the tools, when the compressed roller
has been ejected, ready for removal.

page_text: For the sake of illustration, I have shewn what is called a fly screw press, as the
machine for operating the necessary tools, but such arrangement of tools may of
course be adopted in any suitable kind of machine.
a,
is the fly screw press, having a base b, and mounted upon a bench or frame c.
I then provide and suitably fix in the said press a cylindrical die d, which is of a
greater depth than the thickness of the roller e, which latter is shewn in section in
Figs. 2, 3 & 5. The internal diameter of this die, as will be seen, is equal to the
outer diameter of the said roller.
This die rests upon the bed or base 6 of the machine. Within this die, I provide a
false or sliding bottom piece f, which is capable of a vertical motion from off its base,
by means of the two vertical, adjustable rods g, g', the upper ends of which are
screwed into the said bottom piece, and their lower onds attached to a cross head h,
which slides freely upon the rods i, .
To this cross head h, is attached also the upper end of the connecting rod j at k,
while the lower end of such connecting rod is attached to the treadle 7. The rod j,
treadle 7, bottom piece f&c., are kept down in their lowest position by means of the
spring m.
Again, through the centre of this false bottom piece f, I prepare a hole to receive a
pin n, which is carried upwards from the underside of the bed &c. of the machine by
means of the cross block o, which in it sturn is firmly held to the bench or frame, by
the bolts p, p, or other equivalent means; thus the block o is stationary.
At the lower end of the pin n, where it passes the block, I provide adjusting
screw nuts q, q', by which it may be raised or lowered, thus when the bottom
picce is made to rise, it slides upon the said pin n, and also within the die d.
This pin n, extends upwards beyond the top of the false bottom, a distance a
little more than the thickness of the roller e, as seen in Figs. 2 & 3. s is the
top tool, which is made to enter the die d, upon its descent, and to within a
distance from the bottom piece f, equal to the thickness of the roller e. In the
centre of the top tool, I provide a hole t, into which the upper end of the pin n
enters, this hole being further extended to the outside, see Fig. 3.
Thus when a required amount of clay is placed in the die d, the top tool s is
brought down, and should there be more clay than is required, the surplus will
be forced upwards through the hole t ere it reaches the top of the pin, when the
escape is then cut off, and by reason of the top tool still descending, the clay is
compressed into the proper shape, as seen in Figs. 2 & 3.
The top tool having then been raised, by placing the foot upon the treadle 1,
the bottom piece of is lifted, stripping the roller e, from off the pin n, until it
reaches the top of the cylindrical die d, when it may be removed, see Fig. 5.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
The improvements in the manufacture of castor rollers, and in the combination of
tools to be used in the said manufacture, substantially as hereinbefore described and
illustrated, that is to say: compressing the clay forming such rollers, within the
cylindrical die, which shall embrace the whole depth of such roller, in conjunction
with the sliding bottom piece, stationary central pin, and top tool, each and all
acting substantially as set forth.
1000
CHARLES T. POWELL,
12, Cherry Street, Birmingham,
Applicant's Agent.