IMPROVEMENTS IN MACHINERY FOR MANGLING. CALENDERING OR PRESSING GOODS
Year: 1857

page_text: LETTERS PATENT to John Chedgey, of the Grove, Southwark, in the
County of Surrey, Engineer, for the Invention of "IMPROVEMENTS IN
MACHINERY FOR MANGLING. CALENDERING OR PRESSING GOODS."
Scaled the 15th September 1857, and dated the 20th March 1857.
PROVISIONAL SPECIFICATION left by the said John Chedgey at the Office
of the Commissioners of Patents, with his Petition, on the 20th March
1857.
I, JOHN CHEDGEY, of the Grove, Southwark, in the County of Surrey,
Engineer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN MACHINERY FOR MANGLING, CALLENDERING, OR PRESSING GOODS," to be as
follows:-
This Invention relates to the employment of polished glass instead of metal
or hard wood for the pressing or friction surfaces of mangles, callendering and
other like pressing engines or machines, the object being to effect the pressing
or glazing of woven and other goods in a more expeditious, economical, and
efficient manner than heretofore.
In constructing mangles according to this Invention, I form the bed of
the machine by cementing a polished plate of glass on to a slab of slate
or other suitable substance, and the bottom of the travelling box I face on
its under side with a plate of polished glass, also cemented to a slab of

page_text: slate or other suitable material.
Between these two glass surfaces I insert
loose rollers as usual, round which the cloth or other material to be pressed
is wound. The kind of rollers which I prefer to employ are glass rollers, con-
structed after the manner described in a Patent granted to me on the 15th
day of May 1854.
For the watering of corded silks and the pressing of silks and other goods,
and also for the callendering of cottons, hollands, &c. in which operation a
rubbing pressure is required, I propose to use glass as the pressing or rubbing
surfaces, whether in the form of flat, rounded, or curved surfaces, the form
of the glass surfaces being regulated by the nature of the machine to which
they are to be applied.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Chedgey in the Great Seal Patent Office on the
19th September 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
'CHEDGEY, of the Grove, Southwark, in the County of Surrey, Engineer, send
.greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of March, in the year of our Lord One
thousand eight hundred and fifty-seven, in the twentieth year of Her reign
did, for Herself, Her heirs and successors, give and grant unto me, the said
John Chedgey, Her special license that I, the said John Chedgey, my
executors, administrators, and assigns, or such others as I, the said John
Chedgey, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN MACHINERY
FOR MANGLING, CALLENDERING, OR PRESSING GOODS," upon the condition (amongst
others) that I, the said John Chedgey, by an instrument in writing under my
hand and seal, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and cause the
same to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Chedgey, do hereby declare the
nature of my said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following state-

page_text: ment, reference being had to the Drawing hereunto annexed, and to the
letters and figures marked thereon (that is to say): —
This Invention relates to the adaptation to mangles, callendering and other
like pressing engines or machines, of polished glass for the pressing or friction
surfaces in place of metal or hard wood, as heretofore employed for the like
purpose, the object being to effect the pressing or glazing of woven and other
goods in a more expeditious, economical, and efficient manner than has yet
been attained.
In the accompanying Drawing, Fig. 1 shews in longitudinal section a
mangle with my improvements applied thereto, and Fig. 2 is a cross section of
the same, taken in the line 1, 2, of Fig. 1. The mangle is provided as usual
with a strong rectangular frame a, a, and a travelling weighted box b, b, for
imparting pressure to the goods supported on the bed or table c. Instead of
constructing this bed of hard wood, which is liable to warp and thereby impair
the efficiency of the machine, I form it by preference of a slab or slabs of slate
or stone, and upon its upper surface I cement a slab or slabs of polished glass,
by which means I obtain a smooth, true, and unyielding surface. The box b,
which in other respects is made as usual, I face on its under side with a plate
of polished glass, cementing the same by preference to a slab of slate or stone
interposed between the glass and the bottom of the box. In order further to
secure the glass covering in its place, I chamfer the edges thereof and apply
clamping pieces thereto, as shewn in the Drawing. Between these two glass
surfaces I insert loose rollers d, d, round which the cloth or other material to
be pressed is wound. The kind of rollers which I prefer to employ are glass
rollers, constructed after the manner described in a Patent granted to me on
the Fifteenth May, One thousand eight hundred and fifty-four. These rollers
d, d, with the fabric lapped round them having been placed in their proper
positions on the bed c, the box b charged with its required load is caused by
the well-known mangle wheel motion to traverse backwards and forwards, and
roll the glass rollers on which it bears over the polished surface of the bed,
thereby causing the rollers to wind up and unwind alternately the fabric which
was lapped upon them before placing them in the machine. By this means
the mangling operation will be quickly and efficiently performed.
From the above explanation it will be readily understood that the Invention
is not only applicable to engines for the mangling of goods, but may also be
applied to engines for imparting a polish to woven and other goods, as chintzes,
hollands, &c.
I likewise propose to adapt the Invention to engines for pressing corded
silks and stuffs, and thus producing a watered pattern thereon.

page_text: Having now set forth the nature of my Invention of "Improvements in
Machinery for Mangling, Callendering, or Pressing Goods," and explained the
manner of carrying the same into effect, I wish it to be understood that under
the above in part recited Letters Patent, I lay no claim to the use of glass
rollers for effecting the above-named operations; but I claim the application
to mangles and callendering engines of the improvements above set forth,
whereby the efficiency of such engines or machines will be greatly increased.
In witness whereof, I, the said John Chedgey, have hereunto set my hand
and seal, the Nineteenth day of September, in the year of our Lord
One thousand eight hundred and fifty-seven.
Witness,
J. W. MOFFATT,
66, Chancery Lane.
JOHN CHEDGEY. (L.S.)