Meccano No1 CLOCK KIT Mode D'emploi

MECCANO
To ensure correct operation of this Meccano Clock, it is important to check the following points during
and/or after construction:
I. That the framework is "square" and rigid with
no distortion.
in perfect alignment
must be tightened fully, using a screwdriver
and spanner. )
2. That the gear assemblies and supporting
run perfectly
by removing the escapement mechanism (7)
and allowing the weight to drive the operating
mechanisms
"drag" occurs, trace back through
anisms until
then rectify.
aligned bearings, distorted framework, or not
enough end-float on one or more of the
shafts.)
That the escapement mechanism (7) is correct-
3.
ly assembled. (This requires very careful atten-
tion and may take some patient adjusting to
achieve. The cross-shaft (18a) carrying the
escapement Pallet Pins (251) must be at right-
anglesto the pendulum (252) is alsomust be
Note that, if the driving clutch unit in assembly3a is transferred from shaft 3 to shaft 6 to increaserunning time, the
clutch — with the driving cord and weight — must be reversed (see fig. 1 below) as shaft 6 rotates in the opposite
direction to shaft 3. The cord guide (Strip 6a) at the bottom of the Clock must also be reversedto project outwards to
the left, when viewed from the front, while the hanging support bracket (Flat Girder 103h) at the top of the Clock
must be reversed so that the positions of its circular and slotted holes are transposed, then moved two holes to the
right to compensate for the repositioned driving weight. The clutch, when removed from shaft 3, must be replaced by
a Spring Clip (35) and a Washer (38) to hold the shaft in the correct position. A Spring Clip is included in the Kit
for this purpose.
—.Note also thatÄ0 fit the
be fixed on the shaft and held stationary.
tion indicated by the arrows in the accompanying diagrams, so that the coils of the Spring tend to unwind. This allows
the Spring to be "screwed" onto the shaft without difficulty.
Please note that a sli#lt modification has been made to this Clock since the building plans were prepared.
Assembly 3A now incorporates only two Washers (38) in place of the four shown in the original illustrations.
(See fig. 2 below)
Printed in England
OPERATING
(All rod bearing points must be
and all Nuts and Bolts
freely without binding. (Check
unhindered. If any binding
all mech-
the cause of friction is found
The cause will probably be mis-
The clutch unit, complete with Spring, should then be rotated in the direc-
meccanoindex.co.uk
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Nol CLOCK
CHECK LIST
the Pallet
centres should be approximately
apart
Short Coupling (63d). The Pallet Pins must be
adjusted so that they never allow the escape-
ment wheel (P83) to turn by more than one
tooth at a time. Each swing of the pendulum
rods
should release one tooth of the escapement
wheel and the bottom
should swing through an arc of between three
or
and four inches (77-103mm)
and
4. That the driving weight is sufficiently heavy.
(The accuracy of construction used in building
the Clock has a direct bearing on the amount
of driving weight required. A perfectly-assem-
bled, free-running Clock requires a minimum
driving weight of I lb., but a heavier weight
may be needed to overcome the greater fric-
tion produced by inaccurate assembly.)
5. That the Clock hangs exactly vertical when
viewed
IMPORTANT
either shaft, the 2% in. Gear Wheel (27c) in the assembly should first
CORRECTION
KIT
Pins themselves. The
1 in. (26mm)
and equally spaced from
end of the pendulum
maximum.)
from both side and front.
CODE
Pallet Pin
the centre
152303