Perth Amboy evening news., 1912-12-13

even during the latter part Oh the
hut's construction, in conveying build
ing materials. But, whether a tree
hut, a tree platform, or a window or
! porch railing is used for the elevators
p landing, the scheme will be very
similar, and any boy can easily fig
ure out what changes are necessary.
Get a small p~acking-case or a large
grocery box for the elevator car. The
top Of this box will be the open front
Of the car and should have the board
A Zig. 81 nailed across 1t as shown
to form a ledge to keep small arF
from falling out. Find the exacA
tiers of both sides Of the box, by q
Ing lines ~diagonally across them
corner to corner, and at each of thu
centers-the intersections Of the din
gonal lines, screw a screw-eye into
the box (B, Figs. 2 and 81. Also screw
two screw-eyes (B and D, Fig. 81 into
each end Of the boz, one directly over
the other and in line with screw-eyes
B. The lifting ropes, for which strong
clothesline should be used. are fas-
tened to screw-eyes B, and the screw
eyes G and D slide on wire guides.
The opening in tbs foor of the tree
hut is cut just enough larger than
the car to allow plenty Of clearance
for 1t and the guides. To get the prop
er position for the pulley 3, in the
roof Of the hut, fasten the rope which
you are going to use for a lifting cable
to screw-eye B in the top Of the car.
and then using the car as g. pendulum
let It hang In the floor opening and
hold the rope against the hut ceiling.
Then shift the position of tho rope I'M
til the car hangs in the exact center
Of the floor opening. After screwing
pulley E into the roof boards at this
point, bore a hole through the wall of
the hut directly in line with the pulley
(F, Fig. q, and screw pulley G into
the roof at the extreme end of the
caves (see Fig. p.
The counterbslance for the car Oh,
Fig. p is a section OF 8 or S-inch
~stovepipe filled with earth or sand.
Fig. 4 shows how 1t Is prepared. Cut
the two circular pieces l of the proper
diameter to fit In the ends OF the
piece of stovepipe, and screw a screw
eye into the center OF each. Then
slip n into one end Of the s~tovepipe
and nail the s%tovepipe to 1t with Inch
nails, fill the pipe with enough earth
or sand to make 1t a trife heavier
than the emrty car, and fasten the
second wooden end in place.
The upper lifting rope should be of
the proper length SO when the car is
pulled up above the floor level the
counterbalance will clear the ground.
The rope attached to the
In the lower end Of the counterbalance
n screw-eye B in the bottom of the
car Is for the purpose of operating
the elevator from the ground. The
pulley j Gigs. 2 and 81 should be
screwed into a stake driven into the
ground directly below the top pulley
E. for this lower lifting cable to run
over.
The wire guides are necessary to
Keep the car from swinging and twist
Ing about. Almost any kind OF wire
WIZ
Will do for these. Fasten the two
screweyes K into the roof of the hut
to fasten the top ends Of these guides
TO, and the screw-eyes L into stakes
or1Ven into the ground, to fasten the
lower ends to. The screweyes must
De very carefully located, so that the
guides Will be perfectly vertical. Pull
the wires as tight as you can with
our hands, and then after twisting
the ends upon themselves, use a spike
t0r a lever to twist them tighter.
VI course, 1t is well to build q rail.
ing around the elevator opening, as q
protection when the car has been low.
eieu' II this is built as shown in Fig.
| inc car can be reached from be-
meath the top rail.
fCnNY-gla