We have a reputation for inventive, innovative and practical
design and production techniques.
Lister-Petter Ltd diesel engines incorporate various
Doig compression, extension and torsion springs - also
pressings and complex wire forms.
An Arianespace Launch. The nose cone incorporates a
series of extremely high-precision compression springs
designed to eject the nose cone straight and true prior
to satellite deployment.
Some examples of unusual applications
for which we have designed solutions are illustrated here:
An MEM Ltd circuit breaker incorporating a high precision
copper coil. The rectangular section enamelled copper
wire has the enamel automatically removed at the ends
as part of the production process.
John Crane International Ltd - mechanical seals incorporating
compression springs in a wide range of corrosion resistant
materials including Monel and Hastalloy.
A Black & Decker "Professional" power
drill incorporating various Doig compression and torsion
springs and also pressings and complex wire forms.
British Aerospace Tornado fighters incorporate
various Doig Springs including compression, extension
and torsion springs as well as complex wire forms
up to 1.25 metres long, each containing up to
90 bends.
Flight Refuelling Group plc - in-flight refuelling
equipment being used to charge the tanks of several
aircraft simultaneously. Various Doig compression,
extension and torsion springs are used and pressings
and complex wire forma re also incorporated.
A Stoves Ltd domestic cooker incorporating a variety
of Doig extension and torsion springs and pressings.
A GPT Payphone incorporating a feather-light torsion
spring.
A Mountfield lawn mower incorporating a heavy-duty zinc
plated pressing on the height adjustment lever.
These are just a few examples of
applications of Doig's practical and innovating designing and
production capabilities.
In 1993 the largest manufacture of domestic cookers approached
us to manufacture a spring currently being produced by one
of our competitors. By carefully analysing the function of
the spring we managed to redesign the part and thereby reduce
the cost from £1.00 to £0.15 each. The present
price of the component is £0.10 each.
Many of Doig's customers are
household names and our springs, pressings and
wireforms are used in a wide variety of industries including:
Advertising Display
Aerosol Containers
Aerospace and Defence
Air Conditioning
Automatic Vending
Automobile Prototype Development
Baggage Handling
Bathroom Equipment
Bearing Manufacture
Computer
Currency Handling
Dairy
Data Transfer
Die-Casting
Domestic Appliance
Electrical Switch Gear
Electrical Fusegear
Electro-Chemical
Engine Speed Governor
Farming and Agricultural
Fire Detection & Prevention
Fluid Pumping Devices
Fluid Flow-Control
Food Processing
Fuel Injection
Greenhouse & Conservatory
High Pressure Valves
Horticultural
Hydraulics
In-Flight Refuelling
Industrial Ventilation
Industrial Material Handling
Industrial Cleaning
Injection Moulding
Instrumentation
Iron and Steel Manufacture
Laboratory
Lighting Control
Marine Engineering
Materials Testing
Measurement & Metrology
Mechanical Engineering
Mechanical Seals
Metal Treatment Plant
Mining
Missile Guidance
Motor Vehicle, including Formula 1
Navigation
Nuclear
Oil and Petroleum Refining
Oil and Gas Exploration
Optical
Packaging
Paint and Chemical
Pharmaceutical
Photographic
Pneumatics
Power Tool
Radar
Refrigeration
Robotics
Scientific and Medical
Security Systems
Spectrographic Analysis
Sub-Sea Exploration
Telecommunications
Thermostatic Control
Yarn & Textile Manufacture
We gratefully acknowledge the assistance of the following
companies in the production of this Web Site:
Arianespace
Bespak plc
Black & Decker Ltd
British Aerospace Defence Ltd
Caradon Mira Ltd
Flight Refuelling Group plc
GPT Payphone Systems
Hoover plc
John Crane International
Lister-Petter Ltd
MEM Ltd
Ransomes Consumer Ltd
Stoves Ltd
