IMPROVEMENTS IN MANGLES
Year: 1861

page_text: LETTERS PATENT to Henry Nunn, of Chelsea, in the County of Mid-
dlesex, Whitesmith, for the Invention of "IMPROVEMENTS IN MANGLES."
Sealed the 25th March 1862, and dated the 26th September 1861.
PROVISIONAL SPECIFICATION left by the said Henry Nunn at the Office
of the Commissioners of Patents, with his Petition, on the 26th Sep-
tember 1861.
I, HENRY NUNN, of Chelsea, in the County of Middlesex, Whitesmith, do
hereby declare the nature of the Invention for "IMPROVEMENTS IN MANGLES,"
to be as follows:-
The first part of my Invention has for its object improvements in the
mechanism employed for giving motion to the ordinary box mangle, or those
consisting of a heavy weight moving to and fro upon rollers supported in a
suitable frame; and my Invention consists in improved arrangements of the
mechanism employed for converting and transferring the continuous rotatory
motion of the main driving axis into an alternating rectilinear to-and-fro
movement of the travelling weight, this arrangement of mechanism being more
simple and less liable to injury or derangement than that usually employed,
and generally known as "Baker's mangle motion."
In constructing mangles according to my Invention, a central driving axis

page_text: is supported in suitable bearings on the side frames, and upon it a winch
handle and fly wheel may be fixed. Upon the driving axis there are two
loose pullies or drums, to which chains or ropes are attached, the other ends
being attached to the opposite ends of the travelling box or weight. Between
the two loose pullies or drums there is a fixed boss on the driving axis, on
each side of which a pin or projection is fixed, which enters into holes or
recesses formed in the inner ends of the loose pullies or drums, when they
are moved along the axis to engage and disengage alternately with the fixed
boss, by which each pulley or drum is caused to wind up and unwind its
rope or chain alternately, and thus move the box and weight to and fro in
its frame. The loose pullies or drums are moved to and fro on the driving
axis, to reverse the motion of the mangle, by means of a sliding rod having
projections thereon, which embrace the flange of each pulley or drum. This
rod is caused to slide to and fro by levers, which act alternately on each end
of the sliding rod, the levers which are attached to the frame being acted
upon for this purpose by inclines fixed near each end of the box or travelling
weight, so that when the sliding rod is thus moved in either direction, one of
the pullies on the driving axis is disengaged from and the other is caused to
engage with the boss or clutch fixed on the driving axis, by which arrangement
the movement of the box or travelling weight is alternately reversed.
Another part of my improvements in mangles consists in arranging appa-
ratus for lifting the end of the box or travelling weight when it arrives at
either end of its journey; for this purpose grooves or inclines are formed on
the sides of the box or travelling weight near each end, and when it is desired
to raise either end of the mangle, pins or projections are interposed on the
inner sides of the frame by the attendant, so as to act on the grooves or
inclines, to raise the mangle, such pins or projections being connected by
a rod and lever, so as to be acted upon simultaneously on each side of
the box.