The Mechanical Handling and Storing of Material
Forfatter: A.-M.Inst.C E., George Frederick Zimmer
År: 1916
Forlag: Crosby Lockwood and Son
Sted: London
Sider: 752
UDK: 621.87 Zim, 621.86 Zim
Being a Treatise on the Handling and Storing of Material such as Grain, Coal, Ore, Timber, Etc., by Automatic or Semi-Automatic Machinery, together with the Various Accessories used in the Manipulation of such Plant
Søgning i bogen
Den bedste måde at søge i bogen er ved at downloade PDF'en og søge i den.
Derved får du fremhævet ordene visuelt direkte på billedet af siden.
Digitaliseret bog
Bogens tekst er maskinlæst, så der kan være en del fejl og mangler.
196
THE MECHANICAL HANDLING OF MATERIAL
run, there is no difficulty in arranging such a device, but if the sacks have to be lowered
perpendicularly, gravity sack shoots are the best 'means for handling all goods in sacks,
such as flour, grain, cement, sugar,
Pig. 263. Spiral Gravity Shoot of Cast Iron.
etc. Fig. 262 shows such a shoot,
which is fitted inside with a number
of slides or baffles which, while direct-
ing the course of the sack downwards,
prevent it from attaining an excessive
velocity. The sack glides from curve
to curve until it reaches its destina-
tion either on a take-off table on any
floor of a warehouse or to an in-
clined shoot leading to either rails
or vessel. The take-off table is
hinged and can be closed up out of
the way when not in use. This use-
ful device was first brought out by
Messrs Sutton, Sharp & Hardwick,
of the Imperial Flour Mills, Elles-
mere Port, where it has proved
thoroughly satisfactory, the gliding
motion preventing any damage to
sacks, which can be fed in on any of
the upper floors and taken off at any
lower one. The apparatus takes very
little room and is inexpensive to in-
stall. It will work equally as well
with sacks of 50 lb. as with those
of 280 lb.
Spiral Gravity Shoot.—An
ideal method of lowering sacks verti-
cally from a higher to a lower level
is the spiral sack shoot. Figs. 263
and 264 show it in two forms, the
former being of cast iron and the
latter of timber. The apparatus is
self-supporting like a spiral staircase,
and the cast-iron one in particular
may be used for sacks and also for
such goods as small barrels, boxes
and packages of almost every de-
scription. The diameter is 170 cm.
or 5 ft. 8 in. Eight segments of the
cast-iron one form one complete
spiral, and the weight per foot is just
about 1 cwt. rI he makers are Richard Simon & Sons, Ltd., of Nottingham.
A gravity shoot on the same principle as the foregoing, but for much larger packages,
is shown in elevation and plan in Figs. 265 and 266. It is the first of its kind and size
to be constructed, and was built by Francis Norton, Junior, & Co., of London, to convey