Appliances for Giving Motion to Punkahs, Fans, and the like.
Year: 1890

page_text: Date of Application, 3rd Feb., 1890
Complete Specification Left, 3rd Nov., 1890-Accepted, 6th Dec., 1890
PROVISIONAL SPECIFICATION.
Appliances for Giving Motion to Punkahs, Fans, and the like.
We SAMUEL ROBERT BAILDON, of 1, Whitefriars Street, and JAMES KERSHAW, of
97 Wood Street, City of London, Gentlemen, do hereby declare the nature of the said
invention to be as follows :-
This invention relates to novel methods and apparatus for giving motion to
punkahs, fans and the like either for reciprocating or for rotatory action.
For the purpose of this invention we mount a train of wheels movable by a spring
or weight, and cord or chain. The upper of the train is in connection with an
escapement eccentric or equivalent appliance, and an oscillatory lever or a rotatable
shaft according to the direction of movement to be given to the punkah.
If the lever be employed it can be suspended near its upper part from the frame
of the apparatus, and be drawn too and fro by a connecting rod or link, the extreme
lower end having a loosely fitting weight which has a kicking or jerking action at
the end of each oscillation of the lever, the pull cord of the punkab being at the
top of the lever with a counterpoise for assisting the return motion.
Instead of the lever or its attachments, the upper shaft of the train, or an appliance
therefrom, can give a rotatory motion to the punkah or fan, or a crank or
eccentric can be operated from the train, if desired.
The length of pull on the pull cord in proportion to the travel of the lever can
he augmented by a whip pulley arrangement or otherwise.
When weights are used for driving the motor, instead of springs, they can be
suspended with a single, double or triple cord, or more, as usually done in clocks.
The train of wheels and pinions can consist of any number, according to the time
it is required to run, after being wound up. The number of teeth in each wheel
and pinion can also be, as desired, and usual in such trains.
The movement can be regulated by shortening, or lengthening the pendulum, or
rod, or the size of the escapement. The centre of oscillation of the pendulum can be
level with, above, or below the escapement, and hung in the centre of the train of
wheels, or one side, and the cord can be attached to the rod above, or below the
centre of oscillation.
Dated this 3rd day of February 1800
H. GARDNER,
166, Fleet Street, London,
Agent for the said S. R. Baildon and J. Kershaw.
COMPLETE SPECIFICATION.
Appliances for Giving Motion to Punkahs, Fans, and the like.
We, SAMUEL ROBERT BAILDON, of 1 Whitefriars Street, and JAMES KERSHAW, of
97 Wood Street, City of London, Gentlemen, 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 novel methods and apparatus for giving motion to
punkahs, fans, and the like, either for reciprocating, or for rotatory action.
For the purpose of this invention we mount a train of wheels moveable by a spring,
or weight and cord, or chain. The upper of the train is in connection with an
escapement eccentric, or equivalent appliance, and an oscillatory lever, or a rotatable
shaft according to the direction of movement to be given to the punkah.
If the lever be employed, it can be suspended near its upper part from the frame
Paine R71

page_text: of the apparatus and be drawn to and fro by a connecting rod or link, the extreme
lower end having a loosely fitting weight which has a kicking, or jerking action at
the end of each oscillation of the lever, the pull cord of the punkah being at the top
of the lever with a counterpoise for assisting the return motion.
Instead of the lever, or its attachments, the upper shaft of the train or an appliance
therefrom can give a rotatory motion to the punkah, or fan, or a crank or eccentric
can be operated froin the train, if desired.
The length of pull on the pull cord in proportion to the travel of the lever can
be augmented by a whip pulley arrangement, or otherwise.
When weights are used for driving the motor instead of springs, they can be
suspended with a single, double, or triple cord, or more as usually done in clocks.
The train of wheels and pinions can consist of any number according to the time
it is required to run after being wound up. The number of teeth in each wheel and
pinion can also be as desired and usual in such trains.
The movement can be regulated by shortening, or lengthening the pendulum,
or rod, or the size of the escapements. The centre of oscillation of the pendulum
can be level with, above or below the escapement and hung in the centre of the
train of wheels, or one side, and the cord can be attached to the rod above or below
the centre of oscillation.
Our invention will be clearly understood by the annexed drawings.
Figure 1 is a side elevation of apparatus with vibrating punkah action from a
train of wheels and a weight.
Figure 2 an end elevation of an apparatus with rotating punkah operated from a
train of wheels and a weight.
Figure 3 a side elevation of apparatus with vibrating punkah driver, the pull
cord being led over a series of pullies on the whipping system, so that a greater
travel of the punkah can take place than that of the crank eccentric, or other driver
from the train of wheels.
A, Figures 1 and 2, represents a base on staging supporting uprights B, B, between
which a train of gear wheels C is arranged for rotating by a falling weight D.
The upper shaft of the train, Figure 1, has an eccentric disc E encircled by a
strap F for giving a vibrating motion by the rod G to the oscillatory bar H, this
being hung from the projecting bar I as a pivot.
The upper end of the bar H has the pull cord J of the punkah K attached, this
being counterbalanced by the weight L to regulate the back motion.
The lower end of the bar H has a loosely suspended weight M affixed, so that the
speed of oscillation carries the weight with it to the end of the stroke of the bar H,
and then by the sudden stoppage of the bar, the weight by its tendency to drop,
imparts a jerk and gives a first motion to the bar H for its reverse travel. This
sudden action of the weight also produces a tremulous action of the punkah curtain
before the punkah actually starts on its return travel.
According to Figure 3, the motions are practically carried into effect, but to allow
of the punkah having a greater travel to that of the bar H, we arrange the pull
cord Jover two series of pullies N, N, see Figure 4. One series of pullies is attached
to the upper end of the bar H, and the other to the frame B of the machine.
We have referred more particularly to an eccentric disc for driving the oscillating
bar H but it may be driven by cranks P, as at Figures 5 and 6.
If the punkah be a rotatory one, we extend the axle of the upper pinion, as at
Figure 2, and regulate the speed of rotation by a break, or by flyers in any well
known manner.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In connection with swing punkals, the employment of an oscillating bar with a
loose hanging weight on its lower end, as and for the purpose described and sub-
stantially as shown on the annexed drawings.

page_text: 2. The particular arrangement of revolving punkah rotating direct from falling
weight driving gear as described and shown at Figure 2 of the annexed drawings.
The 3rd day of November 1890.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Samuel Robert Baildon and James Kershaw.