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The Supply Department.

30th November 1911
Page 18
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Page 18, 30th November 1911 — The Supply Department.
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Which of the following most accurately describes the problem?

A Commercial Head Lamp.

We reproduce a photograph herewith of a special form of acetylene head lamp, which has been designed by Bleriot, Ltd., for use in connection with industrial vehicles.

The lamp which is the subject of our illustration has been submitted to comparatively rough usage on several steam-wagon services in Lancashire over a period exceeding six months. The wagons in ques tion have been running on steel tires over Lancashire setts. Bleriot, Ltd., informs us that, judging from the results of this test, which may reasonably be admitted to be a severe one for apparatus of this class, they have no hesitancy in guaranteeing the hard-wearing capabilities of the lamp. It will be seen from our illustration that this "Bleriot" appears to have suffered nothing from the point of view of external appearance, and the maker assures us that its efficiency was unimpared. The generator is a. separate component of the Bleriot vertical type ; this includes a positive shut-off for the water when no gas is required.

A Compact Odometer.

In the course of a test, which was conducted by a member of the staff of this journal on a three-ton, rubber-tired Garrett steam wagon, use was made of what was described in the article concerning this test as a " Perfect " distance recorder. Several of our readers, subsequent to the publication of the results of trial, wrote to us and asked for particulars of the odometer in question. We find that the instrument is marketed by De Dion-Bouton, Ltd. ; it may be of interest briefly to describe its special constructional features.

We reproduce two photographs of the apparatus, one a view of the back of the instrument, and the other a view of the dial. The recorder is made both as a trip instrument, and as a non-trip instrument; each of these two patterns can be supplied to suit any size of wheel, and to indicate either miles or kilometres. An alteration to bring it into line either for a new diameter of road wheel or for a new unit of registration can be very easily and quickly effected. This is an advantage that is of considerable moment to users who desire to secure individual records from time to time of different machines.

The instrument is of that type which is fixed to the hub cap and revolves with the road wheel. A large proportion of axle designs provides for the locating of the wheel on a fixed axle by means of a hexagonal nut. The " Perfect" recorder utilizes this type of design by the provision of a spring steel fork, which can be seen in one of our illustrations, and this drives the " movement " when the instrument is revolved by the road wheel. These forks have slots that are cut in the broad flat ends by which they are attached, so that the distance between the open ends is adjustable to suit any particular type of construction of axle end. There is no need to describe in any detail the actual reduction gear, which is of a normal type. The standard recorders are made to fit the offside, front-wheel hub cap, and, as a rule, they can be placed in position without any structural alteration. Care must be taken, however, to see that there is sufficient clearance between the end of the axle and the shaft supporting the driving springs of the recorder. The non-trip pattern is sold at 40s„ and the trip pattern at 50s., no extra charge being made for fitting to the hub cap. An Interesting Non-skid.

1Ve reproduce below a photograph of a new type of non-skid attachment for twin rubber tires. Ordinary linked chains have in the past been employed in the manner shown, but the "B. and B." device is built up from specially-shaped malleable-iron links.

Some New "Brown" Specialities. Brown Bros., Ltd., advises us that it eontinues to receive increas

ing orders for its extensive range of accessories and supplies. As we have frequently reminded our readers, there is very little in this direction which cannot be secured with the utmost promptitude from the Great Eastern Street house. Brown's were, of course, much in evidence at the recent Olympia pleasure-car show, and, during the other motor exhibition which has just taken place, it also staged a large range of useful supplies. Amongst, tile more recent ties to which our attention has been drawn by this company, we must mention the Gabriel " rebound snubber " ; in the letter of advice with regard to this component, we are glad to say we are told that a

snubber" is a shock absorber ! The " Gabriel " consists of a compact case, half of which is bolted to the frame of the car and the other half suspended on a stud and sleeve. This Ibase is encircled by four coils of Balata belting faced with flexible metal band, the whole enclosed in a dust-proof steel case. The belting is fastened to the axle by an adjustable clamp, and the shock-absorbing capabilities of this device are due to the slack in the Balata being taken up by the expansion of the single-coil spring that is housed inside the device. The coils of metal-faced beltin:-; absorb the rebound.

Another interesting device is a petrol filter that has just been introduced by Brown Bros., Ltd. An example of this was exhibited at Olympia. The filter itself is practicallya sump inserted in the petrol-pipe line. The spirit enters at the top on one side, and leaves at the opposite point on the other side of the fitting. The efficiency of the device is secured by allowing any water and other foreign matter which may be in the petrol to settle at the bottom of the sump. Petrol, which, of course, will float on water, escapes from the filter by way of a conical gauze on its way to the carburetter. .A cock is fitted at the bottom of the filter for the draining off of water and other impurities.

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