Hand-operated production equipment for small industries

A Swaziland based engineering company offers a wide variety of manually operated production equipment aimed at small industries.
Products include construction machinery, water pumps, agri-processing equipment, wire processing machines, stoves and ovens as well as equipment for making items such as paper bricks and clothes pegs.
Although {mosimage}A Swaziland based engineering company offers a wide variety of manually operated production equipment aimed at small industries.
Products include construction machinery, water pumps, agri-processing equipment, wire processing machines, stoves and ovens as well as equipment for making items such as paper bricks and clothes pegs.
Although the factory in Matsapa is relatively new, New Dawn Engineering (NDE) has been developing appropriate technology in South Africa since 1984.
The company is known for its comprehensive approach to development, design and manufacture of labour-intensive production equipment, says research and development manager Crispin Pemberton-Piggot.
NDE also provides training in the design, building, maintenance, use and economics of its own products, and also in customer specified projects and programmes.
Construction machines
The company offers a concrete mixer, tile and brick making equipment and rock and glass crushers.
The hand-operated concrete mixer has a robust 140 litre drum and can mix 65 (wet) litres of concrete in about 45 seconds. Mixing is done with 21 chains rather than the usual three paddles. It can produce dry mixes for making blocks and bricks in about 90 seconds.
Strong, sand-cement roof tiles can be made with a simple, hand-operated tile maker. The tiles are of conventional (and therefore highly desirable) shape. A floor tile maker is also available.
The Terrabric is a ruggedly constructed soil-cement brick making machine. It has axle steel shafts and the top round shaft is of case hardened carbon steel, ensuring that the equipment is able to withstand the high pressures involved in making compressed soil bricks.
The Terrabric uses a minimum amount of water to make bricks. Bricks can be made from either a mixture of soil and cement or subsoil only (depending on requirements). The finished brick size is 290 mm x 154mm x 108mm with which standard 4-1/2 6 and 9 inch walls can be constructed. Because they are made under high pressure, the bricks are solid, smooth-surfaced with high strength and good insulation properties. Capacity maximum is 1,200 bricks per machine per day.
A version of the Terrabric makes two stock bricks (229 x 110 x 75mm) at a time. This machine can also be used to mould clay bricks for firing.
Water pumps
A foot-operated low-lift platform pum, a treadle pump and ram pumps are available.
The foot-operated low-lift platform pump is designed for small-holder irrigation where significant quantities of water are required to be pumped to a low head. An area up to two acres can be irrigated. Different cylinders sizes are available, with which the pump can deliver as much as 5 cubic metres per hour to a low lift, or 350 litres to a head of 65 cubic metres. The pump can draw water from a river, sump or a shallow well.
A treadle pump is a foot-operated, single acting, double cylinder piston pump for low lift irrigation. These pumps were originally developed in Bangladesh for pulling water up to the pump level. Later they were adapted in Kenya to push water higher than the pump. NDE’s pump features 6mm thick cylinder walls and the latest patented valve design for treadle pumping. The ball bearing mounted steel pulley is retained. A wire rope option has been introduced ($3.00 extra) to replace the standard polypropylene rope.
NDE has designed many ram pumps. These pumps pump water uphill without electricity or powered engines. They simply use the water power created by a vertical fall in a river or spring over a slope of about 1 in 5.
Agri-processing equipment
NDE offers a food mixer, an oil press ,a peanut grinding machine and a solar dryer.
The food mixer is a stainless steel version of the concrete mixer. It is robust, solid and compact enough to fit in a pickup truck. It has a 140 litre drum, and can mix a full wheelbarrow (65 litres) of food in about 45 seconds. It does not use fuel, oil, belts, gears, nor wires and needs little servicing.
The NDE oil press can be used to extract oil from oil-bearings seeds and nuts. It is manually operated and can be ordered with different cage bar spacing to suit different sizes and types of seed.
The throughput of the press is around 100kg/day, but can be sped up to 130kg/day. 100kg of hybrid sunflower yields between 25 – 33 litres of raw oil. Once it has settled for a week, the yield will be between 18 – 25 litres of pure, cold pressed oil.
The peanut grinding machine is suitable for making peanut butter from peanuts with a high oil content or peanut powder from low-oil content peanuts.
The grinder has a capacity of about 30kg/hour of peanut butter or 75kg/hour of peanut powder. This depends on the fineness of the grind. The coarser the grind, the faster the throughput.
The peanuts are first broken by a shaped shaft and then advanced towards grinding plates with a coarse screw. The grinding plates are shaped to either macerate the peanuts into a ‘butter’ or to grind them into a powder. The gap between the grinding plates can be adjusted from 0 to 5mm allowing for a variety of texture.
The NDE solar dryer is made with an impact resistant fibreglass covering on the collector and can accommodate up to 15 shelves.
A wide variety of food can be dried including raw beef , fruit, leafy vegetables, seeds, coconut (copra) and chopped vegetables. Soup packaging companies are potential buyers.
Wire processing
A number of wire processing machines such as a barbed wire maker, a chicken wire jig and coat hanger jig are on offer. The latter is a low-cost design innovation for the manufacture of wire coat hangers. It consists of a hardened steel necking and hook rolling tool and a base with pins sticking up. The jig is simple and easy to use – the production rate is typically 300-500 per day.
Paper bricks
The paper brick maker recycles waste paper and cardboard into combustible bricks that can be used in place of firewood in a stove. The paper can be burned alone or it can be mixed with many combustible fuels like wood chips, grass or coal dust. Paper is a very good binder and should be used in combination with any other waste fuel that is available.
The brick maker moulds at a rate of about 1 every 45 seconds.
Clothes pegs
Springs for clothes pegs can be made from ordinary 1,6mm lightly galvanized wire with a small jig and a pair of pliers. Springs left over from broken peg halves can be re-used.
Casting new clothes peg halves from scrap aluminum auto parts is one alternative to importing more product. The cost of producing then is about USC4 each.
Vesto stove
New on the market, the Vesto is a low-cost, biomass burning stove. It uses a third of the wood, charcoal or dung normally used to cook a meal. Two features that set this stove apart are its high-speed lighting and its significantly low smoke emissions, once there are flames. It can be used for both cooking and space warming. Weighing only 5 kg, the Vesto should be lit outside and then carried inside to cook. The stove won an award from the South African Design Institute which recognises excellence in terms of product innovation, affordability, environmental impact and safety. The Vesto costs around $45.
NDE: Tel +268 518-5016 or 518-4194; fax +268 518-5016; info@newdawnengineering.com