Year: 1897

page_text: Date of Application, 8th Apr., 1897-Accepted, 7th Apr., 1897
The object of this invention is to utilise Venetian masts as stands for sightseers
and is accomplished as illustrated in the attached drawings where,
Fig. 1 is an elevation of the mast.
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2 a section at a-b and c-d on Figs. 1 and 5.
3
do.. c-d on Fig. 1 enlarged.
4 a plan at ef on Fig. 3.
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"
5 do. at gh on Fig. 1.
"
6, 7 and 8 are details of the lifting chains and hook supports for the cages.
The mast 1 is made of any material steel tube illustrated carrying as shown any
number of cages 2, 3 and 4 having floors 5 and seats 6 and able to be raised from
the dotted to the elevated positions, when at the former the seat supports 7 of the
cages and 3 being hinged at 50 are extended that the seats 6 may be lowered as
much as possible; at the latter all the cages rest on jaws 40 that centre at 41 rest
on the mast 1 at 47 and have springs 48 slots 42 through which a spindle 43 passes
and for cages 3 and 4 carries stirrups 44 having a spring 45 and bolt 46 resting on
the top of it; the cages 2, 3 and 4 are raised by the pitch chains 8 passing over the
wheels 9 and 10 carried on spindles 11 and 12, and 13 over wheels 14 and 15 on
spindles 16 and 12 of the same pitch; the chains 8 and 13 are endless and carry
hooks 17, Figs. 6 to 8, that centre at 18 and are able to take the dotted position;
they receive motion simultaneously through the spur wheels 19 and 20 and pinion 21
fixed on the spindles 16, 11 and 22 which receive any power, manual being shown,
by the handle 23. The mast 1 is removeable and passed through a ring 24 carrying
gusset plates 25 and arms 26 and into a socket 27 below carried on a stone 28 and
receives lateral support by concrete 29.
WORKING.
The cages 2, 3 and 4 are put upon the mast as dotted at Fig. 1 after it is raised
into position and ties 30 for decorative purposes render it rigid.
The hooks 17 of chains 8 and 13 are turned up and passed through holes in the
floor of the top cage 4; the handle 23 is turned, the chains by the wheels 9 and 14
travel in opposite directions so that the hooks 17 lifting at two points 31 and 32,
Fig. 5, equi distant from the centre of the mast 1 and radial thereto raise the cage 4
in a level position; at the raised sites of the cages 2, 3 and 4 it thrusts back the
jaws 40 passes on until the springs 48 thrust them out again and the handle 23
being reversed the cage rests on the jaws. The chains 8 and 13 bring the jaws 17
down again, they take their dotted positions, are passed through the floor of cage 3
and similarly raises it and others in succession to their sites.
'
The lowest cage 2 is lowered first by the hooks 17, not removed, raising it clear
of the jaws 40 and by drawing down the rod 46 the spindle 43 draws the diagonal

page_text: slots 42 together and draws back the jaws 40 the springs 45 of cages 3 and 4
allow the motion without affecting these cages or their jaws, the handle 23 receives
motion and lowers the cage 2 and after its freight has alighted the jaws 17 are
passed through its floor raised to cage 3 which it lifts, rod 46 is again drawn down
to clear the jaws 40 from the cage, which if desired, is retained on the jaws 40 of
cage 2 or brought to the bottom; the top or any number are similarly lowered.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is:-
Utilising Venetian masts for the accommodation of sight seers; raising one or
many cages successively from a telescopic position near the ground to their elevated
positions, by two endless chains travelling reverse ways, suspending cages at two
points equi distant from the centre of the mast and radial thereto, by double hook
evers that can be turned up and be passed through the floor of each cage and being
turned back support it; supporting the cages when raised on jaws centering on the
mast and resting on it at four points at right angles; the slots spindle stirrup
springs and vertical rod wherewith all the cages are successively released from their
supporting jaws for lowering without disturbing the others substantially as
described and shown on the drawing.