IMPROVEMENTS IN HORSE MILLS
Year: 1860

page_text: PROVISIONAL SPECIFICATION left by Richard Archibald Brooman at
✓ the Office of the Commissioners of Patents, with his Petition, on the
9th May 1860.-A communication from abroad by William Wells-
Grollier, of Poitiers, France.
I, RICHARD ARCHIBALD BRCOMAN, of 166, Fleet Street, in the City of
London, Patent Agent, do hereby declare the nature of the said Invention.
for "IMPROVEMENTS IN HORSE MILLS," (communicated to me from abroad by
William Wells-Grollier, of Poitiers, France,) to be as follows:-
Upon the frame of a truck with wheels, or upon an ordinary bed, I bolt a
hollow boss with horizontal radial arms. The hollow boss receives the lower
end of a hollow vertical shaft, and by means of flanges on the shaft, which rest
upon the upper inner surface of the boss, supports it. A key fixes the shaft,
and prevents it turning within the boss. Surrounding the shaft, and resting
upon the outer upper surface of the boss, is a collar cast in a piece with a
hoop or band, which extends some distance from the collar in a horizontal
direction. On the inside of the hoop I place segmental blocks or plates of
iron, lined on their inner faces with leather. An independent hoop or crown,.
toothed on the inside, is placed inside of the segmental plates, and pressure.
screws passing through the outside hoop regulate the friction or pressure.
against the inner crown. The shaft or shafts to which the animal or animals-
is or are harnessed bear against the lower end of the collar, and are bolted to
the bottom of the outer hoop plate. The arrangement of the boop, segmental
plates, inner crown, and pressure screws is intended to guard against breakage.

page_text: and shocks to the mill, which might arise from any sudden pull or jerk of the
animals driving it, for upon any such jerk the outer hoop would turn round
the inner toothed crown without carrying the latter with it, and which would
afterwards take its motion gradually, therefore the pressure screws must be
nicely regulated to allow of the outer hoop revolving round the inner crown
under the circumstances above mentioned. The hollow shaft has cast on one
side, and in a piece with it, two arms, which support bearings for the top and
bottom of a vertical shaft, to which is keyed at bottom a toothed pinion, which
is geared into by the teeth on the inner crown before named. At top this
shaft carries a toothed wheel, which gears into a pinion carried on a second
vertical shaft, supported inside of the hollow shaft first herein mentioned. A
portion from the side of this hollow shaft is cut away, to allow of the toothed
wheel gearing into the last-mentioned pinion. The shaft to which this pinion
is keyed rises above the top of the hollow shaft, and has keyed on its upper
end a bevelled toothed crown wheel. On the neck of the hollow shaft there
is a ring, which supports a collar carrying forked arms curved upwards by
means of a set screw. These arms may be fixed in any direction required by
the work to be performed. The upper ends of the forked arms form bearings
for a horizontal shaft, to which is keyed a bevelled pinion into which the
bevelled toothed crown wheel gears. On the outside of the arms this last-
named shaft has keyed, or otherwise fixed to it, pulleys, from which bands are
led to communicate power for the work to be performed.