Improvements in Elevators for Removing Debris from Mill Races and the like.
Year: 1891

page_text: Date of Application (in United Kingdom), 20th June, 1097
Complete Specification Left, 26th June, 1891-Accepted, 7th Nov., 1891
.
· COMPLETE SPECIFICATION.
Improvements in Elevators for Removing Debris from Mill Races
and the like.
I, PHARES R. GRABILL, of Millersburg, in the County of Dauphin and State
of Pennsylvania, United States of America, Manufacturer, do hereby declare the
nature of my invention for IMPROVEMENTS IN MILL RACE FENDERS AND
SCREENS, 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 an endless elevator for mill sluices or races for removing
ice, coal-dirt, &c., from the water and it consists in the novel construction and
combination of the parts, hereinafter more fully set forth, and pointed out in the
claims.
In the accompanying drawings,
Fig. is a perspective view of my improvement as applied to a mill race or
sluice, the power end of the driving-shaft being removed.
Fig. 2 is a front elevation of a modification, and
Fig. 3 shows a side elevation of the same modification, the rack or rods being
outside of the endless hook and scoop-carrying belts or chains, and also shows the
carrier for removing the leaves and other obstructions.
In carrying out my invention I employ a series of two endless belts or chains A. A,
encompassing sprocket or rag wheels B B, secured to shafts C C, suitably journaled
in inclined side pieces a a, arranged and secured in the mill sluice or race, preferably
as shown, or otherwise, and a horizontal or inclined carrier consisting of a trough A,
secured in position in any ordinary manner, between the side walls of which the
belt A, having hooks A, passes, conveying the leaves, brush, &c., away from the
rack or sluice, the wheels upon which the carrier plays being constructed in any
ordinary manner. The driving end B of the upper shaft has secured to it a
pulley, to which power is applied by a belt c from a suitable motor.
endless belts or chains A have secured to them transverse plates e, carrying a row
or series of upwardly-curved teeth, or the teeth may be carried directly by the
chains or belts themselves, each row of teeth constituting a rake to gather up or
remove from the water heavy as well as light pieces of wood and heavy "brush ;" also
to remove leaves floating upon the surface thereof. Also, secured transversely to the
endless belt or chains A are scoops e, in order to take up brush, leaves, also coal-
dirt, that "flood" down from the mines.
These
E is a rack consisting of a series of rods E, arranged at short intervals apart and
extending in the direction of the length of the elevator, their upper ends being
secured to a board e', fastened to a platform, and their lower ends secured to a cross-
piece e, fastened to the side pieces a. The rack E' is disposed a suitable distance
from and in the rear of the endless belt, and it prevents the escape or passage of
floating brush, leaves, ice, &c., and until caught and carried off by the teeth and
scoops.
F is a series of guards pivoted in the Hoor of the sluice or race at their outer

page_text: ends, and resting upon the cross-pieces at their free ends, thus lifting and permitting
the passage of the rakes and scoops, said guards being arranged in an upwardly and
forwardly inclined position, and designed to prevent heavy pieces of water-soaked
wood sinking and getting under the rack..
In Figs. 2 and 3, as before intimated, the rack is arranged outside or in rear of
the endless belt of rakes and scoops, the latter in that case having a reverse
movement, as indicated by the arrow.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, declare that what I
claim is :-
1. In a mill-race fender, the combination of the endless belt or chain of fakes
and scoops, the rack consisting of the series of rode; the pivoted guards, and the
horizontal or inclined carrer, substantially as shown, and described.
2: The combination, with the endless belt or chain of rakes and scoops, of the
pivoted guards having their free ends resting in alignment with the rakes or scoops,
substantially as specified.
3. The combination of the horizontal or inclined carrier, the trough, the endless
belt or chain of rakes or scoops, and the rack consisting of a series of rods,
substantially as shown, and for the purpose described.
4. The combination of the endless belt of rakes and scoops, the rack consisting
of the series of rods, and the pivoted guards, substantially as and for the purpose
set forth.
.
Dated this 25th day of June 1891
F. W. BARKER,
Applicant's Agent.