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The Purchase Department.

1st May 1913, Page 23
1st May 1913
Page 23
Page 23, 1st May 1913 — The Purchase Department.
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Which of the following most accurately describes the problem?

Where to Buy your Supplies.

You Can:Get,It At- " G.A.S." (Birmingham). A practical rigid motorflap, which can be used both for communication between driver and passenger, and also as a means of ventilation, is made by john Hall and Sons (Bristol and London), Ltd., 173, St. Pancras Road, London.

The Question of Shock Absorption.

It is now almost general practice to equip motor vehicles intended for pleasure purposes with some satisfactory shock absorber. On a commercial motor, also, it is by no means an unusual sight to notice a vehicle so fitted during the last year or so.

From time to time we receive at this office complaints from users in regard to the main springs fitted to their machines. In some cases we are assured that the springs were too light in the first place, but on occasion, after investigation, we have advised that the leaves be separated and, lubricated, and this advice, when followed, has led to satisfactory results.

There is little doubt, however, that it is only recently that the question of springing has received the attention which its importance warrants. Some few years ago under-sprung vehicles were coniparatively common. Manufacturers realized this fact, and, knowing the tendency of the average user to overload his vehicle, attempted to solve the difficulty by the fitting of springs having a safety margin considerably greater than was necessary_ Tires also have received quite a large amount of consideration, and manufacturers are urging the importance of fitting tires having a larger section than the actual load carried demands.

On top of these problems conies the question of shock absorption. Several satisfactory appliances of this nature are already on the market, and are inconstant demand. 'We have had our attention directed quite recently to a new type of shock absorber, which is known as the Acme, and which is made in a range of sizes for use on wagons capable of carrying a useful load of one-and-a-half to five tons. As will be seen from the line drawing which we reproduce, the construction of this new appliance is simple and clean. Certainly springs are largely employed in the construction, but these are not inaccessible, and in case of failure or breakage, they can easily be removed and replaced. We understand that these devices have been subjected to very searching tests, and have given great satisfaction to the maker, Car Springs, Ltd., Kingston-on-Tharnes. The latest device for !shock absorption. A "Quick Repair" Sparking Plug.

Most drivers have experienced annoyance and delay due to sparking plug failure when some distance from a garage. Many attempts have been made to manufacture a reliable and serviceable plug, on which any part can be replaced without lowering the general efficiency of the fitting. At the same time reliability must not be sacrificed to accessibility. A plug of this nature which has impressed us most favourably is that known as the " A.Y." which is sold by G. H. Smith and Co. (London), Ltd., 14a, Great Marlborough Street, London, W.

When Overhauling Springs.

We have often remarked on the carelessness of the average driver with regard to the overhauling of the springs on motorvans and steam wagons. Having been in service for periods varying from six months to several years, if not periodically overhauled, and cleaned, the leaves become rusted together, and, to all intents and purposes, resiliency is lost.

Many drivers are not aware how to renew the life of leaf springs. We do not think we should be overstating the case were we to remark that 90 per cent. of these fittings on vehicles on the road do not receive the necessary attention. It is only when many machines go into the workshop for repair that springs are given attention. Brown Bros., Ltd., Great Eastern Street, London, F.C., has recently placed upon the market the Duco spring jack. This is a simple, yet efficient tool, intended for springing open the leaves of laminated springs. It will be seen from the illustration herewith that the tool is strongly made, neatly designed, and is unlikely to break or to become out of order. By screwing up the adjustable end, the pointed centres enter on each side of the spring between the leaves, so holding the separate sections apart. When opened in this manner, accumulated rust and dirt can be removed, and the leaves well lubricated.

By keeping the springs in an efficient condition, shocks from the road are taken very largely from the tires, a point which leads to a considerable saving. Quietness in running is also effected, owing to the absence of squeak, which is so noticeable from the ill-kept vehicle spring.

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