New Equiprnent and Publications
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High-Frequency Electric Tools
tAA RANGE of high-frequency portable electric tools has been introduced by Wolf Electric Tools, Ltd., Pioneer Works, Hanger Lane, London, W.5. The range includes 1-in., 1-in., 1-in., Fin. and
capacity drills, a reamer, shears, screwdrivers, grinders and a sander. All operate on 200 cycles, 3-phase supply and have a squirrel-cage induction • motor with a rotor speed of 12,000 r.p.m.
Main application for these high-frequency tools is on intensive production work where the advantages of constant speed under load, increased power with less weight, low operating costs and, in particular, the virtual elimination of motor failures will he most beneficial. The capital expenditure involved in obtaining a high-frequency supply is relatively high but in many cases will be warranted.
Collapsible Pallets A STANDARD form of collapsible
post or box pallet that has a number of interesting features has been developed by E. Stephens and Son, Ltd., 58/66 Bath Street, London, E.C.1. It can be supplied in any size required and when collapsed is only 8-in, high and can also be stacked with any other make.
Link joints at the bottom of the posts allow them to be folded down along the sides. The posts can be square or round and are said to be sufficiently rigid when erected that they need no bracing.
The detachable sides which can be mesh or sheet, are easily and quickly removed and replaced.
Heavy-duty Tow Pole AHEAVY-DUTY towing pole of 25ton capacity has been introduced by Harvey Frost and Co., Ltd., one of the companies in the Brockhouse Organization, 25 Hanover Square. London, W.I.
The new pole is called the Maxi-Haul and is double cranked to avoid fouling the body of the towed vehicle. A 844 detachable axle clamp forms part of the equipment and the pole, which has a swivelling eye at its end, is attached to it by means of a spring-loaded dropnosed pin.
Harvey Frost have also designed a special towing attachment for use with the Maxi-Haul pole. This incorporates a quick-acting positive self-locking pin.
Alternative Bumper Fixings LEXIBLE fixings for the ends of the I front bumpers of -Bedford CA vehicles have been introduced by Marflex, Catterick Road, Boroughbridge, Yorkshire. These are to replace the standard brackets attaching the ends of the bumpers to the body sides. Fitting the Marflex units will overcome the possibility of damage to the body panel if the bumper is pushed back.
Two types of fixing have been developed. Both use a short coil spring If-in. long with dia. eyes at both ends. One has a seticrew rigidly fixed in the eye at one end, the other has setscrews at both ends. The former is intended for use when the studs welded to the bumper ends are in good condition. The double-setscrew fixing is used if the bumper stud is damaged. In this case a hole has to be drilled in the bumper. With both types a hole has to be drilled in the body panel.
Retail prices of the fixings are 2s. 6d. a pair with a single setscrew and 4s. a pair for the double-setscrew type. Charge for postage and packing is 10d.
Sealing Compounds SEALANTS based on Viton synthetic rubbcr, which give exceptional resistance to high temperature and fuels, are now available from B.B. Chemical Co.. Ltd.. of Leicester.
Two special-purpose compounds have been developed. One is brushable and intended for the sealing of joints and as an overcoating for bolt and rivet heads. The other is a high-solids material, applied by spatula or extrusion gun.
The compounds are supplied in two-part form and. after mixing and solvent evaporation, will cure to rubber-like solids within seven days at normal room temperature. When fully cured by increasing the temperature. they will withstand temperatures up to 250° C.