AT THE HEART OF THE ROAD TRANSPORT INDUSTRY.

Call our Sales Team on 0208 912 2120

The Purchase Department.

21st May 1914, Page 23
21st May 1914
Page 23
Page 23, 21st May 1914 — The Purchase Department.
Close
Noticed an error?
If you've noticed an error in this article please click here to report it so we can fix it.

Which of the following most accurately describes the problem?

Where to Buy your SuppEes.

The Latest Warrow Valve-grinder.

We have received for inspection from Brown Bros., Ltd., Great Eastern Street? London, E.C., the latest type of Warrow valve-grinding tool, which has several new anti interesting features. With the original tool it, was found that there was a tendency for the inteirupted bevel wheel, which produces the reciprocating movement, to jam.

In the latest construction, however, which we have carefully examined and tested, the small bevel pinions 411e mounted loosely on the spmdie, but are compelled to rotate through the medium of case-hardened pins which engage in slots cut longitudinally on the spindle. They are, however, kept up to their work by means of two small coiled springs. If the interrupted bevel wheel should tend to jam when engaging with either of the small pinions, the latter will slide away just sufficiently to allow the two wheels to mesh noiselessly.

An improvement has also been made in the manufacture of the wheels, whereby perfect alignment is secured, and the tool works extremely smoothly and consequently absorbs very little power. The rotation of the handle of the valve-grinder produces a reciprocating motion of the spindle, and the valve is moved round just over half a revolution in each direction for one complete turn of the handle. By using this simple and ingenious tool, the valves can be ground in very quickly, and the particular movement of the grinding spindle ensures the valve seatings' being accurately and evenly ground.

The Bowden ".Accurator."

Owners of commercial,vehicles have long desired an instrument which will tell them if they are getting the highest fuel-efficiency from the engines and, if they are not, to enable them to adjust. the carburetter to give that efficiency.

A neat and compact device which combines the ordinary type of speedometer with a fuel-consumption meter, has recently been brought to our notice. The consumption indicator is worked from the partial vacuum which occurs in the neighbourlicod of the jet, this negative pressure operating a diaphragm, which in turn moves the indicating needle. The

principle of operation is based upon the theory that the amount of Petrol flowing from the jet is directly proportional to the degree of vacuum, and in practice this has been found very accurate.

The readings for speed and consumption are on a single dial, and they are so arranged that the most economical running of the engine for any speed is when the two indicating needles are superimposed.

When the " aecurator " is first fitted, the vehicle is run along the level road for a short distance at a constant speed, and the consumption hand is then ad• lusted to the speed hand, the back wheels are then

placed on a special set of rollers, which are provided with a brake, and the engine run at speeds corresponding to certain vehicle-speeds ; measuring tanks are provided, and the instrument can be calibrated by noting the time required at various speeds and resistances for burning a certain quantity or petrol.

Hydraulic Tire Presses.

The tire presses marketed by Hollings and Guest, Ltd., of Thimble Mill Lane, Birmingham, are well known, and are used to a great extent throughout the industrial-vehicle industry. To facilitate the changing of solid-rubber tires without sending wheels away, a tire press of some kind is an essential part of the equipment of workshops and garages. The illustration we include is of a hydraulic press made by this concern. The machine is worked by a double-ram pump operated by hand the larger ram is for raising the press quickly and the smaller is for obtaining high pressure. The press can be sunk in the ground to a convenient working height.

In the illustration which we reproduce the press is shown fitted with hand pumps, but the press can be operated by means of belt-driven or motor-driven pumps.

The framework is of rolled-steel channels riveted together, whilst the cylinder and rams are made of eastiron. A runway is fitted with the press for the lifting of heavy wheels.

The company also makes a smaller tire press, particularly suited for Overseas use. Hollings and Guest make a number of other specialities, including hydraulic pumps, gas-heated stoves, and bending presses.

Tags

Organisations: Purchase Department
Locations: Birmingham, London

comments powered by Disqus