Edition du 25/02/09
/18
U508219-e Revision : 2
4
Figure 1. Series 7888 Meter Printer Mounted on Series 7887 Meter Register
SECTION 2. DESCRIPTION
A. OPERATION OF ZERO START PRINTER.
The Series 788800 Meter Printer (Zero Start)
mechanically
records
and
prints
digital
information delivered to its drive shaft. This
shaft positions the print wheels according to
the ratio of internal and external gears. Reset
and print operations are manually actuated.
The Zero Start Meter Printer is so named
because it begins the count at zero and returns
to zero when reset. The printed total is the
amount of the delivery.
1. Drive. The shaft, Figure 2, on the bottom of
the printer is driven by a bevel gear from a
meter register or other equipment. The
printer's bevel gear and shaft assembly turns
in a counterclockwise direction. The internal
bevel gear on the shaft drives the clutch
assembly, associated pin ions and the gear
assembly of the right-hand print wheel.
Note: The zero start clutch assembly prevents
the print wheels from turning in a reverse
direction.
2. Reset. During printing operation, the print
wheels, Figure 2, are reset to zero through
rotation of the reset gear train and reset shaft,
Figure 3. During the "Print ln" cycle, one
complete clockwise revolution of the reset
drive gear turns the reset shaft gear and reset
shaft to reset the print wheels to zero.
3. Printing. ln printing operation, a ticket is
inserted into the slot of the ticket tray unit it
bottoms on the internal stop.
a. As the printing knob is turned, the reset
drive gear, Figure 3, makes one complete
clockwise revolution until a positive stop is
reached. As the ticket tray moves into position,
the seal pin pierces the ticket, holding it in
place. This initial printing is made with wheels
at zero.
b. At the completion of delivery, the knob is
turned in a clockwise direction one complete
turn until the stop is again reached. During this
cycle the second printing is made recording
the amount of delivery. At the end of the print
cycle, the ticket tray returns to its original
position and the gear pin releases the ticket.
B. OPERATION OF ACCUMULATIVE
PRINTER.
The
Series
788801
Meter
Printer
(Accumulative) mechanically records and
prints digital information delivered to its drive
shaft. This shaft positions the print wheels
according to the ratio of internal and external
gears. Print operations are manually actuated.
The Accumulative Meter Printer is so named
because it is a non-resetting type that begins
the count at the accumulated total of the last
delivery, prints it, accumulates a new total for
the new delivery and prints it. The amount
delivered must be calculated by the operator:
