DATA
The sound of bells enhances any building, whether it be a City Hall a Church, a modern Shopping Centre or a landscaped area.The use of bells in
these environments always creates a friendly and welcoming atmosphere.
BELL CHIMING & BELL SOUND
TIME/MOVEMENT • RETAIL/URBAN • DESIGN MANUFACTURING • INTERNATIONAL
Electro-magnetic
hammers
FOR NEW AND EXISTING BELL
INSTALLATIONS
THE BENEFITS
• Remote and programmable striking,
chiming, tolling, angelus and tune playing
• No mechanical linkage required.
• Will give new life to existing bells, for
instance, where a weight driven clock
or carillon is no longer operational.
Typical internal hammer general arrangement.
• Fast response suited to repeat notes
and much quicker than drop hammers.
INTERNAL HAMMERS
Internal hammers have an action similar to
an internal bell clapper, and are used where
a bell is fixed in position.
They are ideally suited to use in an
outdoor location as the bell partially
conceals the hammer unit and also acts as
a protective cover.
Internal electro-magnetic hammer.
Internal electro-magnetic hammer in situ.
External electro-magnetic hammer.
Re-hung bell, replacement hangers & EMH.
External electro-magnetic hammer in-situ.
Typical external hammer general arrangement.
EXTERNAL HAMMERS
External hammers have an action similar to
a traditional mechanically linked hammer.
They are ideally suited for use on both
static and swinging bells, whether the latter
be either partial or complete rotation. For
ringers safety switch see page 4.
External hammers are also used if it is not
possible to fit an internal hammer, for
instance, when the bell has a crown.
DIMENSIONS
Electro-magnetic hammers are
manufactured in a wide range of sizes,
appropriate for most bells.
POWER REQUIREMENTS
110 to 220v, 50-60Hz single phase supply
fused at 13 amps.
INSTALLATION & CONTROL
Smith of Derby manufacture all of their
own equipment “in house” and provide a
full installation and after-sales service.
Electro-mechanical hammers can be
activated by a microswitch fitted to a clock
movement, or via our C200 series fully
programmable control system, details on
page 7.
2 BELL CHIMING & SOUND
Electro-mechanical
toller units
THE BENEFITS
• Programmable operation of striking,
chiming and angelus on traditional bells.
• Use existing or new mechanical drop
hammers and connecting rods
• Operation identical to a weight driven
clock.
• Will give new life to existing bells, for
instance, where a weight driven clock
or carillon is no longer operational.
REMOTE TOLLER UNIT
Electro-mechanical toller units are located
remote from bell hammers, usually
alongside or in place of an existing clock
movement.Their function is identical to
the lever action of the strike or chime side
of a weight driven clock, to provide the
action for tolling, striking and chiming.
Electro-mechanical toller/strike/chime unit.
Action is transmitted via mechanical
linkage to the bell hammer.
DIMENSIONS
Electro-mechanical tollers are built
according to the size of bell hammer.They
are built with increasing power and
robustness as hammer sizes increase.
Typical hammer assembly unit.
Multiple hammer for rapid repeat on same bell.
Right-angle lever for hammer connecting wire.
Lever action on toller.
POWER REQUIREMENTS
110 to 220v, 50-60Hz single phase supply
fused at 13 amps.
INSTALLATION & CONTROL
Smith of Derby manufacture all of their
own equipment “in house” and provide a
full installation and after-sales service.
Toller units can be activated by a
microswitch fitted to a clock movement, or
via our C200 series fully programmable
control system, details on page 7.
BELL CHIMING & SOUND 3
Bell safety and clock
silencing
FULL RANGE OF PULL-OFF OPTIONS
MANUAL PULL-OFF
This is the simplest form of clock
strike/chime silencing, and comprises a pull
ring and linkage which is attached to the
clock hammer connecting wires. Pulling the
ring and locking it with the pin ensures
that the clock hammers are kept clear of
the bells during any clock strike or chime
sequence, enabling safe bell practice and
change ringing.
Manual pull-off.
CLOCK STRIKE/CHIME
AUTOMATIC NIGHT SILENCING
Mechanical clocks
An electrical actuator (APO series) is
installed with linkage to the clock
mechanism hammer levers.The system is
controlled by a programmable timer.
According to the programme, the clock
hammers at the bells will be pulled clear to
effectively silence the clock strike/chime.
The standard timer installation is
programmable on a 7-day basis with night
stop times and morning start times to suit
the local requirements.
Electrical Actuator Pull-Off (APO series).
BELL FIXINGS
Traditional bells are often secured to the
timber stock or beam via a series of loops
cast into the top of the bell.This is known
as the “crown”. A set of threaded rods or
bolts holds the bell in place.
Optional extras include a second timer
which allows individual timed control for
the strike and chime respectively.
Ringers safety switch
Where the church tower has a ringing
peal, the system can include a ringers
safety switch which overrides the timer or
automatic programme to allow bell
practice and change ringing. Indicator lamps
show the status of the installation: safe or
unsafe for change ringing.
Night silencing timer with optional second timer.
Electric hammer/toller installations
These systems have a fully programmable
controller which includes night silencing
for the clock strike and chime.
DESIGNING YOUR SYSTEM
For all bell ringing installations we offer a
free and without obligation initial site visit.
This enables our Technical Sales Engineer
to determine your exact requirements,
following which we can offer a full
specification, with all the various options,
together with appropriate fixed price
quotation.
4 BELL CHIMING & SOUND
Example of a bell with crown and fixing rods.
Ringing room safety switch.
We can include repairs to these fixing rods
as part of an overhaul of your bell
installation.This is sometimes necessary if
the bells need to be re-hung in a new
location, for example, where the condition
of original timbers no longer permits use
of the bells.
Bell sound system
THE BENEFITS
• Authentic re-creation of bell sound.
• For interior and exterior settings.
• No existing clock required.
• Fully programmable for wedding peals,
change ringing, chimes, tunes, night
silencing and special events.
THE SOUND OF REAL BELLS
Bell sound at a municipal city hall.
Bell sound at a church with no external clock.
Bell sound in a pillar clock.
C200 series controller and amplifier.
Our digital Bell Sound System recreates
the sound of traditional bells so faithfully
that you would believe they were real.
Authentic bell harmonics and sound
characteristics make the system a perfect
alternative to real bells, particularly where
there are cost, space and structural
limitations.
The 30W output system is designed for
interior settings or limited space
applications such as within a pillar clock or
roof turret.The 120W output system gives
an excellent sound range which in most
locations will equal that of real bells.
The Bell Sound System is equally at home
in large public buildings, leisure
developments, churches and civil wedding
venues. It can be used with or without a
clock dial.
D
SOUND GENERATION
The standard bell sound system contains
up to 15 separate bell notes which
provides scope for a wide variety of tunes.
A bespoke 30 note system is also available.
Please refer to Bell Sound Tunes on page 8.
C
30W system
120W system
E
C D E
Weight
380 300 155 9.6 kg
380 380 210 17.3 kg
AMPLIFIER UNIT
Amplifier cabinet.
Amplifier cabinet dimensions.
C200 series controller display.
MIDI keyboard.
High fidelity amplification ensures quality
sound reproduction with a wide volume
range free of distortion.The bell
microchips and amplifier are housed in a
robust steel cabinet, or within the column
base of a pillar clock.
CONTROLLER
Our C200 series controller is the main
interface for the bell sound system. See full
description on page 7.
KEYBOARD
An optional MIDI keyboard converts the
bell sound system into a modern day
carillon. As standard it can control up to 15
bell notes, however, up to 30 notes can be
included if required.
BELL CHIMING & SOUND 5
Bell sound system
SPEAKERS
B
Round type reflex horn high efficiency:
• 30W system: 2 x 270mm diameter.
• 120W system: 2 x 510 diameter.
A
More speakers can be added if required to
overcome prevailing site conditions.
A 2-core 5A 100V cable is used to link the
speakers to the bell sound amplifier.
Individual volume controls can be supplied
for each speaker as an option, but this will
require a separate 2-core 5A 100V cable
for each speaker.
A
B
Weight
30W system
250
270
3 kg
120W system
582
510
6 kg
120W speaker.
Speaker dimensions.
30W speaker.
30W speakers in a pillar clock.
POWER REQUIREMENTS
110 to 220v, 50-60Hz single phase supply
fused at 5 amps.
INSTALLATION & CONTROL
Smith of Derby manufacture all the parts
required to complete your bell sound
system, and provide a full installation and
after-sales service.
The bell sound system is operated by our
C200 series fully programmable controller,
details on page 7.
CONNECTIONS
Additional speakers (if required)
Provision of power supply and cable
between amplifier and speaker locations
must be done by a qualified electrical
contractor prior to installation of the
system by Smith of Derby.
2-core 5A 100V speaker cable
Multi-wire signal cable is required to
connect the C200 controller to the
amplifier cabinet.We supply sufficient cable
for when the two units are installed
adjacent to each other, but if they are to
be further apart, this cable must be in
place prior to installation of the system.
20-core cable is typical.
Splitter box
2-core 5A 100V speaker cable
C200 CONTROL SYSTEM
Switched fused spurs with 5 amp fuses are
required: one for the amplifier unit, one for
the C200 controller and one for the radio
control option described on page 7.
Multi-core screened cable:
3 to 17 core depending on
number of bells
BELL SOUND
SYSTEM
AMPLIFIER UNIT
2-core
+earth 5A
2-core+earth 5A
3-amp double pole switched fused spurs
fitted close to control system and amplifier
15A supply:Voltage: 110 - 240, Fequency: 50 or 60 Hz
Typical wiring scheme for a 30W or 120W Bell Sound system.
6 BELL CHIMING & SOUND
Control system
FEATURES AND BENEFITS
• Suitable for controlling electromagnetic hammers, tolling units and
electronic bell sound systems.
• Factory set to client specifications.
• User adjustable, with reset facility.
• Security key for tamper-proof mode.
• Manual override for special events
C220 series control system keyswitch, display and pushbuttons.
PROGRAMMED CONTROL
The Smith of Derby C200 system offers
the most flexible and comprehensive
control option for bell hammers or our
bell sound system.
260
Control includes hour striking, chiming,
angelus, tune playing and night silencing. It
is factory set to a specified programme to
which the user can add future
amendments.
In standard form it can control up to 15
bell hammers and/or bell sound notes,
which covers a wide range of tunes. A 30
note version is available if required.
A 70 year battery back-up ensures that the
pre-programmed memory is not affected
by power failures.
The configuration of each unit is
determined by individual requirements in
terms of the functions to be controlled.
Please see the table opposite for more
detail.
325
145
Weight: 3.7 kg
C220 series control system dimensions.
FUNCTIONS
C210
C220
C230
C240
C250
Angelus Tolling
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Continuous Tolling
Funeral Tolling
Single Blow
Clock Hour Strike
Ding-dong quarter chimes
Westminster quarter chimes
OPERATION
The controller is supplied preset with
specified programmes to which the user
can add future amendments. Manual
override can be used on special occasions,
for instance to play wedding peals before
and after the ceremony.
The C200 series controller has 10 separate programme memories, each holding a
full range of instructions including variable
speed of repetition.You can pre-set
programmes, for example, for Easter and
Christmas, and set the controller to
automatically change from one programme
to another.
Automatic Night Silencing
•
Automatic Tune playing
Automata control
Electrical conversion of weight driven strike and chimes
REMOTE CONTROL
Remote control is available for operation
of a bell, for example by the minister
during a church service.Two versions are
available: a fixed pushbutton or a hand-held
radio remote control with wall-mounted
receiver.
C270
•
Wall-mounted
radio signal
receiver
Hand-held
remote control
unit
The C240 controller has full tune playing
facilities, and the C250 also includes full
automata control. For bell sound tune
information see page 8.
Hand-held remote control.
BELL CHIMING & SOUND 7
Bell tunes
BELL SOUND TUNES
Representative sample of available
peals, hymns and tunes
Title
Bells req.
PEALS
The standard bell sound system with C240
controller contains 15 separate bell notes:
C, D, E, F, F#, G, A, A#, B, C, C#, D, E, F and
G.These provide scope for a wide variety
of tunes.
8-bell wedding peals - rounds
8
8-bell peals - Bob Major
8
10-bell peals,10 minutes - Little Bob Royal
10
Our current list of tunes contains over 250
and is regularly updated.The table gives a
sample selection. A full list is available on
request.
Tune availability
The C240 controller comes complete with
4 installed pre-programmed memory
modules.This enables each system to
provide a wide variety of tunes themed to
your location, whether it be a City Hall a
Church, a modern Shopping Centre or a
landscaped area.
10-bell peals,10 minutes - Grandsire Caters
10
10-bell peals - Queens Peal
10
Call changes - various
12
Monastic bells, European style - random
6
ROMAN CATHOLIC HYMNS
Alleluia
14
Hymn to St. Patrick
11
O Sanctisima
10
Salve Regina
10
CHURCH OF ENGLAND TUNES
REAL BELL TUNES
Abide With Me
14
Praise My Soul The King Of Heaven
12
The Old Rugged Cross
14
Brother James’ Air
14
TRADITIONAL AIRS
The content of our memory modules is:
Auld Lang Syne
H1, H2, H3: hymns and christmas tunes.
Bobbie Shaftoe
10
Clementine
14
Myafnwy
14
G1, G2: traditional airs, nursery rhymes,
national anthems, general tunes.
C1, C2, C3, C4, C5, C6: change ringing and
peals. (These include longer sequences, and
therefore require more capacity.)
Custom requirements
Special selections from our list of bell tunes
can be programmed into the system if
required.We can also input other tunes
from sheet music. However, the individual
notes must be within the standard range
available, which may necessitate a tune
being transposed from its original key.
Additional bell notes can be provided to
special order, up to a maximum of 15 notes
plus the standard 15 notes.
Electro-magnetic hammers on a peal of bells.
14
Anniversary Waltz
14
Lincolnshire Poacher
10
NURSERY RHYMES
Boys And Girls Come Out To Play
12
Baa Baa Black Sheep
10
Hickory Dickory Dock
10
Oranges and Lemons
14
Our C240 controller can be programmed
to play tunes on any existing or a new bell
installation.
The range of tunes possible on a peal of
real bells will obviously be limited by the
number and notes of the bells. For
practical purposes, a minimum of 8 bells is
required to give scope for a choice of
tunes.
Our electro-magnetic hammers have a fast
response suited to repeated notes in
tunes, for example, Baa Baa Black Sheep,
Jingle Bells and Clementine.
CHRISTMAS
Away In A Manger
14
Silent Night
14
Deck The Halls
14
White Christmas
8
We Wish You A Merry Christmas
9
NATIONAL ANTHEMS
God Save The Queen
14
American National Anthem
14
BELL SOUND DEMONSTRATION
An 18-track Bell Sound System
demonstration CD is available on request.
Alternatively, visit our website at
www.smithofderby.com to hear a short bell
sound demonstration chime. Please note
that these are subject to the sound output
quality of your stereo equipment or
computer.
If you are UK or Eire based and seriously
interested in purchasing a Smith of Derby
Bell Sound System, an on-site
0demonstration using our portable system
can be arranged.
Sample Bell Sound CD.
Portable demonstration unit.
COPYRIGHT: All designs © Smith of Derby Limited 2006.The design, price and specification of our products may vary without prior notice.
John Smith & Sons • Wm Potts & Sons • J B Joyce & Co • John Smith & Sons (Ireland) • These companies are divisions of
SMITH OF DERBY LTD, 112 Alfreton Road, Derby DE21 4AU United Kingdom
tel • +44 (0)1332 345569 fax • +44 (0)1332 290642 e-mail • sales@smithofderby.com web • www.smithofderby.com
8 BELL CHIMING & SOUND February 2006 issue