ON SHOW AT KELVIN HALL A number of items of
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equipment on view -it the Scottish Show have not been seen at previous commercial vehicle exhibitions; and there are, of course, some of the "old faithfuls" which can save so many manhours.
Among the new items are several from Tecalemit, and among the others the numerous extractors. pullers and the like from Sykes Pickavant.
Roller brake-tester A roller brake-tester with roller-capacity of up to 4,0001b, shown for the first time by Tecalemit, on .the Whiteford Robertson stand, is suitable for testing most light vans. The unit comprises two pairs of 2 hp motor-driven rollers which revolve at a speed equivalent to 1.24 mph road speed: the motors drive through a reduction gearbox.
Applied braking effort is transmitted through torque reaction arms and a hydraulic load cell to a pair of 8in.-diameter dials, each graduated to 1,6001b. A slave pointer is fitted to each dial face to permit the highest recorded force to be held until calculations have been completed. The roller beds are a fabricated framework and this is made in two halves to permit easy installation. A wheel slip indicator is incorporated in each pair of rollers, slipping being signalled by warning lights which flash alternately while the wheels are turning but one or other of which remains constantly alight as soon as they stop turning.
The recording dials, the controls and the warning lights are contained in a free-standing console desk which can be situated close to the beds. One of the features of the Tecalemit Brake Tester is that it is supplied complete with a pedal oressometer to ensure that the effort put into the braking system is constant.
Also supplied with the unit is a circular slide-rule which quickly and simply converts the recordings to actual braking efficiency.
Price: £695.
Tyre remover/fitter
Also from Tecalemit—and on the same stand—is a new, portable tyre fitting and removing machine which is powered by compressed air. An experienced operator can handle up to 45 tyre changes a minute.
It is claimed that the machine cannot damage wheel rims and will handle tyres of 10 to 17in. diameter. As a member of CM's staff saw at the show demonstration. it can break the beads on both sides of an inflated tubeless tyre.
All the machine's controls are on one side, and because it is completely independent of permanent power connections it an easily be used on site. A tyre lubricant container is fitted to the control side of the unit and the wheel-securing device, a quick-action self-locking threaded cone, can also be operated from this position.
Inspection covers are arranged to expose all working parts and the bead-breakers are arranged so that both the top and bottom discs can be locked in the event of a stubborn upper or lower bead being encountered. The breaker is a directly opposed type ensuring even pressures to both beads during the beadbreaking operation.
The tyre removing device is a swing-down arm which engages between the tyre and the rim. The rim is revolved by an electric motor, running the tyre off or on as the case may be. The motor powering this operation is of hp and the recommended air-pressure for the machine is 150 p.s.i. The turntable rotates at 7 to 8 rpm. Price: £275.
High-pressure washer unit
From Tecalemit again—a highpressure washing unit consisting of a trolley-mounted water tank containing an air-operated motor and pump assembly. The pump can • dispense a detergent mixture, via a hand-held lance, at a strength which can be pre-set for the particular operation. Hand controls on the lance can quickly convert the high-pressure water and detergent mixture to a high-volume flow of clean water for rinsing.
Only air power is required to operate the double-acting 10:1 motor controlling the pump. The supply from the water main is controlled by a ball valve in the tank and because the pump is immersed this helps to preserve a constant temperature throughout the unit.
A long, light, swivelling dispenser lance ensures access to all surfaces from a comfortable operating position free from dislodged dirt and spray bounceback.
The pump is of simple design constructed of corrosion-resistant materials fitted with long-life seals. Working surfaces of the pump are protected from ingress of foreign matter by a detachable strainer.
The supply from a separate detergent container to the pump is automatically controlled by an adjustable metering device.
Adjustment to the mixture strength is provided by a simple hand control. Upon release of a hand-tight lock nut the control can be screwed out or in to adjust the water:detergent ratio between 30:1 and 200:1 by volume. With the control screwed fully in the output of detergent is zero.
A damping chamber inhibits pulsation of the pump output so that delivery from the lance nozzle is smoothed.
Price: £120.
Hose reel
A large-capacity Tecalemit hose reel introduced to meet the increasing demand for high-volume oil dispensing will accommodate the high flow rates (up to 10 gallons per minute, depending on oil viscosity and pump used).
In common with other cabinet hose reels this unit is self-retracting and hose recoil can be automatically arrested by a ratchet and pawl mechanism at selected intermediate positions.
The standard reel is fitted with a 30ft delivery hose complete with swivel and dispensing control nozzle (longer hose lengths are available.). The nozzle, which can be locked in the open position for ease of dispensing, accepts a reducing adapter for smallfilling orifices.
The reel is fitted with a mounting bracket for attachment to a wall, ceiling, flooring or support frame and it is recommended that a Minimeter or Hose-End Meter (both calibrated in gallons) be used in conjunction with it. A specially designed two-unit support frame is available for the installation of this combination, or of the reel as a single unit.
Price: C105 10s.
Transfer pump
The transfer pump introduced by Tecalemit supplements the range of air-operated pumps designed to facilitate the handling of fluids in garages, servicing depots and fleet transport depots. It meets the demand for an efficient, economical means of handling oils and other non-corrosive liquids at high flow rates. Its use enables small containers, gearboxes, sumps, etc., to be replenished from a bulk supply, rapidly and without spilling.
Operating at air pressures from 45 to 150 lbf/in.:' the transfer pump has an air-to-fluid pressure ratio of 1:1. A double-acting pump housed in the barrel assembly ensures smooth operation and a constant flow of liquid. The pump performance is related to the air pressure available (maximum 150 lbf/in.'), oil viscosity and the configuration of the delivery pipe-work, for which a minimum bore of 0.75 is advised. The following flow rates are claimed using the pump fitted with a 6ft 1in. 0.75-bore hose and a large-capacity nozzle and operating at 150 lbf/in.2:
SAE 10 oil—Uo to 14 gal/min (63.64 litres/min) SAE 40 oil-6 gal/min (27.28 litres/min) SAE 140 oil-21 gal/min (11.36 litres/min) The pump is available in two lengths and with alternative mounting adapters to suit either storage tank or barrel installation. The air inlet connection accepts a standard Tecalemit Quick-Fix Coupler and the outlet port is threaded lin. BSP for delivery hose or pipeline connection. A large bore, trigger operated dispensing nozzle may be attached to the hose and a special reducing adapter is available for smaller orifices. A float valve assembly to provide automatic control of the pump when used for waste oil disposal is also available.
Basic design and construction of the transfer pump are very simple and, with few working parts, maintenance is reduced to a minimum.
Price: €23 10s.
Oil drain unit
A mobile, automatic oil drain unit by Tecalemit is shown on the stand of James Aitchison and Co. (Tyres) Ltd. Redesigned and restyled, the unit embodies a number of advantages over earlier models.
The increased bore of the drain column gives quicker filling. Discharge by air pressure empties the container in approximately 2+ minutes (at 10ft head) and coupling the unit to permanent wall fittings is simplified by locating both coupling points on the top of the unit. A float valve is fitted to seal off the drain column when waste oil is being discharged from the unit, the capacity of which is 27 gallons (123 litres).
The unit comprises a welded steel tank mounted on a fourcastored base. It is fitted with a telescopic drain column and a large-capacity collector bowl, and is designed to be used in conjunction with ramp entry pits, servicing docks, or vehicle lifts, etc. The bowl is provided with a gauze strainer to retain solid matter for inspection. An oil-level sight tube is provided so that overfilling and flooding can be avoided. An oil discharge hose of clear PVC incorporating a check valve, together with an air supply hose, are supplied with the unit. A pressure regulator and a safety valve fitted in the air supply pipe under the top cover are easily accessible for servicing checks. Made by: Tecalemit (Engineering) Ltd., Plymouth, Devon.
Price: E6010s.
Tachometer
A new transistorized electronic tachometer designed for use with diesel engines while they are being tested on dynamometers is on show on the Thompson Brown Brothers stand. This unit is produced by Dunedin Dieseltune and operates magnetically.
An external magnetic field is created by a sensor and when this field is broken by a ferro-magnetic object a voltage pulse is set up in the sensor coil and converted into a true engine speed reading on a scale calibrated from 0 to 3,000 rpm and from 0 to 6,000 rpm.
Selector switches in the cabinet containing the mechanism permit either of these two rpm scales to be selected at will and the unit is also provided with a calibration check and means of checking the condition of the two 9V batteries with which it is powered.
The ferro-magnetic interrupter is fitted into some exposed rotating part of the engine such as a fuel pump jack-shaft or crank shaft pulley and the sensor is mounted adjacent to it on a fixed part of the engine.
Made by: Dunedin Dieseltune Ltd., 28 High Street, Tooting, London, 5W17. The Swan Tennent and McMeeking stand has a host of Sykes-Pickavant handtools. Among the most useful of these is one which introduces a new concept in thread chasers. Whereas former chasing sets literally cut damaged thread material away to restore access for female threaded parts, this chaser takes the form of a series of hardened steel rollers attached to an adjustable carrier and threaded around their peripheries with matching threads of numerous styles.
The method of use for these units is that they are started in a good portion of a damaged thread and run off backwards. During this action the damaged portion is rolled back to its original shape without loss of metal, and therefore strength, of the thread.
The sets are known under the SykesPickavant number 355 with various suffixes according to the contents of the sets.
Made by: Sykes-Pickavant Ltd., Warwick Works, Kilnhouse Lane, St. Annes on Sea, Lancs.
Left: A visit to any stand showing Sykes-Pickavant tools is always worthwhile. Many useful items are on this one occupied by Swan Tennent and McMeekin at the Scottish Show.
Price: from £13 13s 4d to £32 17s 4d according to content.