Well-buck′et El′e-vator.
A common mode of elevating water is by reciprocating buckets, which are fastened to the ends of a chain plying over a wheel above in alternate directions.
The empty one in descending forms a partial counterbalance for the ascending bucket of water.
 |
|
Reciprocating buckets. |
Fig. 7149 shows an arrangement by which the lip of the elevated bucket is engaged so as to tip the bucket and spill the contents into a trough, which has a discharge-spout on the outside of the curb.
An automatic reciprocation of two buckets having varying capacities when full and weights when empty was invented by Gironimo Ferugio at
Rome, in 1616.
The bucket
a is larger than the bucket
b, and consequently holds more, giving
a the preponderance over
b when full.
When empty,
b weighs more than
a, being purposely weighted, giving
b the preponderance when it descends for another load from the cistern.
The tank
e is constantly supplied with water, which as constantly escapes by the spout
f. The water escaping from the cistern
e into bucket
a depresses the same and raises a smaller quantity of water in the bucket
b to the elevated cistern
o. On the middle hoop of the bucket
b is an ear which catches the hook on the edge of the cistern
o, so as to tilt the contents of the bucket into the cistern.
The lower hoop of the bucket
a has also an ear, which, at the bottom of the descent, catches upon a hook and tilts its contents.
The buckets being emptied, the preponderance of weight is in favor of
b, which descends, raising the bucket
a to be again filled, and plunging itself in the cistern
e to receive another supply.
The toothed wheel
s engages a pinion
t to insure regularity of motion, by means of a fly-wheel on the pinion-shaft.
When the fall of the bucket
a is less than the elevation of the bucket
b, a wheel and axle
m n are employed, with a corresponding decrease in the capacity of
b in the proportion of the radii of
m n.
 |
|
Bucket-tipping arrangement. |
 |
|
Ferugio's water-elevator. |
At
Dares, near
Dieppe, the garrison was supplied with water from a deep well by means of buckets raised alternately by a rope passing around a drum on a vertical axis rotated by 6 men, who each exerted a force of 25 pounds upon the ends of the levers, and raised 13 cubic feet of water at a haul.
The Anglo-Saxons used the chain and wheel; the pivoted and weighted well-pole; two buckets on a chain with a wheel; buckets with iron hoops.
See also Shadoof; sweep; etc.
 |
|
Well of Dares. |
