ers with tie pieces supporting the main framing. This main
framing, also of the "box girder" form, is strengthened with angle
irons and braced together at the tops by a platform supporting the
gearing of the bucket chains, as shown on Fig. 5. The buckets have a
capacity of 160 liters (5.65 cubic feet) and the speed in travel is at
the rate of 25 to 30 buckets per minute, so that with both ladders
working, 50 to 60 buckets are discharged per minute. The top tumbler
shaft is placed at a height of 13 meters (42 ft. 8 in.) above the
water line (Fig. 4), and the dredge conduit has a length of 50 meters
(164 ft.), Fig. 1. The shooting is done at a height of 8.5 meters (27
ft. 10 in.) above the water line, and the shoot catches the dredged
products at a height of 10.5 meters (34 ft. 5 in.) above the water
line, the sliding gradient being 4 to 100. The dredge conduit is
carried by timberwork resting on two of the upright box form
stanchions.

[Illustration: IMPROVED FLOATING ELEVATOR AND SPOIL DISTRIBUTOR.]

All cables are of galvanized steel and provided with open twin
buckles. The main parts of the apparatus are of steel, and all pieces
subject to wear and tear are fitted with bushes so formed that they
can be easily replaced.

The quantity of suitable soil removed by these apparatus amounts to
350 cubic meters (12,360 square feet) per hour. Four plants of similar
construction have been built for the new Baltic Sea Canal, besides a
fixed elevator of the same power and disposition, with the exception
that the top tumbler shaft was suspended at a height of 16.1 meters
(51 ft. 10 in.) above the water line, and the dredge conduit placed at
a distance of 13 meters (43 ft.) from it.

* * * * *

IMPROVED COLD IRON SAW.

[Illustration: IMPROVED COLD IRON SAW.]

The engraving given herewith shows a general view of the "Demon" cold
saw, designed for cutting iron, mild steel, or other metals of fairly
large sections, that is, up square or round, and any rectangular
section up to 8 in. by 4 in. The maker, Mr. R.G. Fiege, of London,
claims for this appliance that it is a cold iron saw, at once
powerful, simple and effective. It is always in readiness for work,
can be worked by inexperienced workmen. The bed plate has T slots, to
receive a parallel vise, which can be fixed at any angle for angular
cutting. The articulated lever carries a saw of 10 in. or 12 in.
diameter, on the spindle of whi