New Equipment, Processes and Publications
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Electric Power for Floor Cleaning
A N additional range of battery powered floor-cleaning equipment has been introduced by Diamond Motors (Wolverhampton), Ltd., Upper Villiers Street, Wolverhampton. Known as the Mechocleen range, it consists or three machines—a dry scrubber-polisher, a wet-dry scrubber-polisher and a dryer. All three have Exide traction batteries.
The two scrubbing machines may be adapted to clean any type of floor merely by changing the brushes. The scrubber unit, consisting of the brushes, a I h.p. electric motor, wheels and handlebar, may be separated from the battery cradle and castors. The separate battery cradle takes up less room in the charging bay and, where shift work is necessary, each machine can be equipped with two battery cradles, so that it may be kept constantly in operation.
Brushes scrub and polish the full 19-in width of the machine, so that floor areas alongside walls and immov able objects may be reached. .
The wet-scrubber has a 44-gal. tank mounted on the handlebar and a variable-feed control.
An aluminium dust cover encloses the gears between the electric mote)] and the brushes, whilst glasspol mouldings Cover the motor unit and switch
mechanism. .
New Overhead Door Gear THE latest addition to the range ot door equipment manufactured by P. C. Henderson, Ltd., Harold Hill. Romford, Essex, is the Ultra overhead gear. There are three standard sets available, the Ultra 150 which costs £10. the Ultra 210 costing £10 2s. 6d. and the Ultramatic 180 priced at £14 17s. 6d. The Ultramatic is self-opening once the securing catch has been released.
Suitable for various sizes of door, the gear employs nylon wheels running in steel tracks and specially tempered springs having a dead-balance adjustment.
Reduced prices have been introduced for many other products in the Henderson range.
Additions to Holt's Range FIVE newcomers to the ,range of products manufactured by Douglas Holt (Est. 1919), Ltd., New Addington. Surrey, have been announced.
Rubbabild is pure rubber in paste form and costs 3s. a tin retail. Easy to spread with a knife, it is intended for building up worn rubber, filling cuts in tyres and so on.
Holt's rust remover is available in 4-oz. and 8-oz. bottles priced at 2s. and 3s. 8d. retail, respectively. It is designed to break down deposits so that they may be wiped off with a cloth. Even severe cases are said to respond to treatment if the remover Is worked in with steelwool.
For cleaning garage floors, chassis and engine components, Holt's degreaser may be applied by brush and rinsed off with water. The retail . price is I Is. 6d. per gallon.
Soldapaste, which costs Is. 6d per tube retail, is d tin-lead solder with flux and °thei ingredients in fine paste form To make a joint it is necessary only to clean the mating surfaces and apply the paste and heat. Small jobs, such as electrical connections, May be carried out rapidly, using a cigarette lighter or match as the source of heat, as a test by The Commercial Motor proved.
Available in two grades, fine and medium, and coloured red and orange for identification. Holt's rubbing-down compound is priced at 16s. 8d. for 7 lb.. retail The medium grade is for removing surface irregularities and gives a matt finish, whilst the fine is intended for obtaining a gloss surface preparatory to waxing.
Solid Forged Sockets • rAA NEW range of sockets, employing 1-in, square drive, has been intro: duced by Thomas Meldrum, Ltd., Freedom Works. John Street, Sheffield. 2. Instead of being bi-hexagonal, as is usual, these sockets have only a single hexagon, which is said to give a more positive fit on the bolt ca nut.
Priced at 4s. 6d. each retail, they are being produced in sizes ranging from ele irk to I in. Whitworth, with equivalents in B.S.F. and A.F. A range of
sizes from .4,in. to in. A.F., with equivalents in S.A.E. except for the in. size, is also available.
New Process Cuts Costs A NEW method of producing high
strength synchronizing rings for transmission systems by powdered metallurgy has been introduced by Machine Products, Ltd...Swindon, Wilts. It is estimated that the cost of synchronizing rings made by the new process will be much reduced.
Complex-contour components may be made to a degree of accuracy which does away with many of the machining operations hitherto essential. Of the six operations previously necessary, four have been eliminated, and the only machining still required is slotting and cutting a thread on the inside of the ring, which is made from 10-per-cent. tin-bronze.
It is stated that laboratory and road tests over the past two years have proved by synchronizing rings by the process to be V.S satisfactory as parts produced by conventional methods.
For the Transport Engineer DUBLISHED on Monday by Temple
Press Ltd., at 21s. net (21s. 9d. by post), "The Road Transport Engineer." edited by Mr. G. Mackenzie Junner, should prove a useful addition to the reference works of engineers, whatever their status.
The contents of this volume range from basic principles to the economics of road transport engineering, and cover vehicle and fleet maintenance, workshop and garage layout, the principles of storekeeping, insurance, road transport law and a number of related subjects, including a chapter on management.
75 Y ears' History THOSE interested in motoring history I will find "The World's Automobiles, 1880-1955," by G. R. Doyle, an excellent work of reference. It was published on Monday by Temple Press Ltd. at 15s. net (15s. 9d. by post). The major part of this I65-page volume contains an international 'and alphabetical list giving the name. date and place of manufacture of nearly 4,000 cars produced in 75 years.
Technical Book Revised AGOOD deal of valuable information is contained in the fifth edition of" High-speed Diesel Engines," by A. W. Judge (Chapman and Hall, 65s. net). Chapters on supercharging, small vehicle engines, air-cooled units. special engines and starting technique have been added. commendable coverage of a complex subject is given by this 60-page volume which, apart from a few lapses, is generally tip to date.