New Equipment, Processes and Publications
Page 50
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New Loader Has Four-wheel Drive
ANEW 2-cu.-yd. front-end loader known as the TL.20D Tractoloader, manufactured by the Tractomotive Corporation, of America, is to be distributed in Britain by Mackay Industrial Equipment, Ltd., Eaggs Road, Feltham, Middx.
Features include a one-piece welded frame, four-wheel drive and a complete power-shift transmission with torqueconverter drive which multiplies engine torque by up to 35.0 per cent. Planetary axles are said to provide more rim pull with less stress on the axles, transmission, universal joints and differential. The axles are pinconnected to the frame and equipped with a high-traction differential.
Steering is power-assisted and fourwheel power brakes may be operated with either the right or left foot. There is also a separate, positive-locking mechanical parking brake.
The Allis-Chalmers 344-cu.-in. oil engine develops 95.5 b.h.p. at 2,600 r.p.m. A 24-v. electrical system is used, with an electric starter. Three forward and reverse gears are provided and a maximum speed of 25 m.p.h. is attainable.
The bucket has a 40° tip-back taken at ground level, and maximum power is transmitted to it through the use of straight-line linkage. Dumping clear. ance is 9 ft.
A fully enclosed hydraulic system includes a full-flow filter as well as a magnetic filter; a suction-line screen is also provided.
Muir-Hill Loader Changes rHANGES have been made in the
design of the Muir-Hill 2-WL hydraulic loader produced by E. Boydell and Co., Ltd., Old Trafford, Manchester, 16. They affect the standard bucket range and the bucket control linkage.
The model 2-WL is now available with six different buckets ranging from the standard 1-cu.-yd. 4-ft. 6-in.-wide type to an oversize 3-cu.7yd. (nominal capacity) full-width bucket for coke loading. Also included are ,1-cu.-yd. quarry-type buckets and a 11-cu.-yd. full-width model for light materials.
These are all based on the curvedback design, and it is claimed that their use, in conjunction with the roll-hack action provided, greatly enhances the loading ability of the machines, as well as reducing transmission and tyre wear.
A further advantage claimed • is in c 10 transport, a heaped_ load in a level bucket being carried at any beam height, thus improving stability and giving the driver better vision.
The redesigned linkage incorporates oil-less bushes. The tipping angle is increased, positive bucket stops being provided at all tipping heights above 6 ft. 9 in. to tipped bucket lip, in order to ensure positive. discharge.
Hardening Starter Rings ISE of the British Oxygen flame t—.1 hardening process at the Birmingham gear manufacturing firm of Francis B. Willmott (Dalmans), Ltd., is stated to have resulted in increased strength of starter ring teeth, together with greater hardness and consequent improved life.
The flame hardening machine which is used, was designed by Mr. K. G. Walton, the firm's chief engineer, and enables a high production output to be obtained on a large variety of starter rings. Fach ring is rotated at a speed suitable for giving a uniform distribution of heat in the peripheral regions. Heating is controlled by an automatic time mechanism, and the ring is then immersed in a water-based soluble-oil quench.
Made from medium-carbon steel, starter rings can be flame hardened up to 2 ft. 6 in. in diameter and 2-in, face width, the hardness obtained being in the range of Rockwell C47 to C52.
To avoid brittleneSs and the subsequent breaking of teeth, the rings are tempered for one hour at a temperature of 265° C. The hardness pattern is under control, as is the degree of hardness, and these can be varied to suit individual customers' requirements. Hardening is followed by a strain draw tempering operation in a low temperature, air circulating over.
The teeth are hardened over their complete length, but the remainder of the body of the gear is in a normalized condition.
Additions to Crypton Range
'TWO additions to the range produced 1 by Crypton Equipment, Ltd., Bridgwater, Somerset, are the Hydrolek combined battery and charging-circuit tester, and a fast charger to be known as the AD.50 Batterymaster.
The tester enables an unskilled operator to check the state of charge and cell condition or a battery, test the charging-circuit voltage conditions and voltage regulator setting, and locate short circuits in wiring.. It is claimed that it is possible to make a complete battery and regulator test in less than two minutes. The Hydrolck costs £6 15s.
The new fast charger will handle 6v., 12v. and 24v. batteries, and is .compact in design, with large-diameter rubber-tyred wheels_ Costing £98, it will charge 6v. batteries at a maximum of 100 amps., 12v. batteries at 50 amps.
and 24v. batteries at 50 amps. • It will also develop up to 250 amps. for fast-starting petrol and oil engines, or will slow-charge up to 10 batteries overnight. Another feature is that it can be used to test batteries for sulphation.
An automatic overload switch protects the charger against misuse and a Crypton thermostat takes care of the battery during charging.
Invisible Heat
HOW crankshafts, camshafts, cylinder liners, gears and rocker tips can be locally hardened by the use of induction heating is an example of the topics discussed in "Induction and Dielectric Heating," published recently by the British Electrical Development Association (Ss. 6d.).
Intended for both technical and nontechnical management executives, the work is well written and excellently illustrated.
Trader Handbook, 1957
DEVISED and brought up to date, the
51st edition of the Trader Handbook has been published by the Trader Publishing Co., Ltd., at 15s. (16s. by post).
There are six sections, divided by guide cards with thumb indexes for easy reference. Preceding these sections is a legal guide covering the motor, motorcycle and cycle industries with informatibn on points of law which experience has shown to be most troublesome to traders, The main sections are: technical and general (cars and commercial vehicles), technical and general (motorcycles and cycles), transport service equipment, buyers' guide, proprietary names, and trade addresses.