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WAYS AND MEANS.
Page 143
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Useful Contributions from Our Driver and Mechanic Readers.
Two Getting-home Tips.
k BROKEN water pipe is not a common occurrence, but a correspondent, r.E.," of Leyton, E., seems to have d this happen on a Leyland lorry and ereame the trouble in the following inner:—
The fracture occurred, as shown, in a pipe leading from the pump to the dieter, so he unbolted the pump from 3 pipe leading from the cylinders and to unbolted the flange of the broken n, which, by a lucky chance, was of
e stune size as that of the upper pipe. sea Ire made l a joint between the oken pipe and the upper pipe, turd unected the broken entiZa—the radiator means of a piece of -gibber hose, so thing the water circulation thermoIonic and was able to get home in is manner.
The same correspondent tells .us of other case where one of the Piercerow lorries under his charge was ).ught to a stop through the square las of one of the universal joints ving come adrift and dropped someera along along the road. The driver did t care to drive on without them, so toned headquarters for advice.
Ere was told to procure two common Are nuts as near as possible to the e of the lost blocks and file them Ill they fitted, and to bore or file out ! holes to fit the trunnions. In this miler he was able to get home quite 'el y.
Using an Angle-plate.
CORRESPONDENT, 0.L.," of London, N.5, sends us the follow::—When holding a piece of work on angle-plate it often happens that the z1c-plate projects so far beyond the :a of the faceplate that the latter mot revolve ; this is especially the e if the lathe happens to be rather all. The following is a way out of difficulty : Reverse the angle-plate the faceplate, as shown in Fig. 1, I in most cases it will not project rond the edge of the faceplate. Of irse, the inner surfaces of the anglete ought to be machined, but in an ergency job this can sometimes be pensed with for the time being. If shaper or planer be available for chining the inner surface of the le-plate, this operation can be permed in the lathe itself, as shown in 2.
['wo holes are tapped in the anglet 1M that it can be held on the facete by tap bolts or studs the ends vhich are just below the surface, By Eting the angle-plate across the facete as shown in Fig. 2, the whole face can be operated on by the turntool. This should be a stout tool tool bar of some size, because it has project from the top plate of the le rest for a distnnee equal to the lth of the part of the angle-plate t is not being operated on.
tome angle-plates have a gusset, ich would be in the way, but the ter has had to use this dodge more n once and in these cases has re-. red the gusset by sawing it away with
Most angle-plates are quite stiff enough without the gusset.
The example shown in Fig. 1 is a universal joint, the trunnions of which. are worn out of round and have to be trued up, and the best way to locate the job properly on the angle-plate so that the trunnions will be in line with each other when finished is as follows :—Before putting the angle-plate on the faceplate, bolt a piece of iron on to the latter, say, about 4 ins. by 11 ins. by in., and bore a hole in it, as shown, the front half of which will fit the trunnion, before it is trued up, and the back half be of the diameter of the trunnion after it has been trued. This arrangement will give the correct distance of the angle-plate from the centre and also true the back trunnion, all that is necessary being to see that the front trunniou ruus true.
A. Hot-air Muff.
THE advantages of drawing into the
carburetter air that has been slightly warmed by contact with the exhaust pipe is well recognized by those who have been in the habit of driving lorries so fitted, especially in cold weather.
A correspondent, " G.A.C.," of Wakefield, tells us how he fitted an air-heating device to two 5-ton lorries with beneficial results.
He first made a tube to slip over the carburetter, which he secured with four small screws. Round this tube he fitted a collar, which was split, a tight fit over the tube and had holes drilled right through it and the tube to allow cold air to enter, and so provide an adjustment for all weathers.
To this tube he attached a piece of flexible pipe of a suitable length to reach from the carburetter to the exhaust pipe. A piece of pipe about an inch larger than the exhaust pipe (if this be not available two pieces of sheet steel bent to shape will do) was used for the muff. Some pieces of angle-iron riveted on served for the damps, and convenient pieces of metal welded or riveted to the muff served to space it from the exhaust pipe so that the cold air could enter to be warmed. Our correspondent suggests 6 ins, as a good length for this muff, which he has found to give excellent results on his Pierce-Arrow lorries.
The Carbon-monoxide Danger.
THE following is sent us by
" D.Mac.G.," of South Uist. During the winter months the danger of carbonmonoxide poisoning cannot be given too much consideration by drivers and mechanics when working in the garage. In this letter I propose to give a few hints of the " prevention-is-better-thancure " type, and I shall confine myself to treating of how to prevent poisoning. To deal with the method of restoring the breathing of a person suffering from the effects of carbon-monoxide poisoning would take up too much space.
The most important point to remember is never to run the engine in the garage Without ample ventilation. During cold and frosty weather one is liable to overlook the question of sufficient ventilation, and if the engine be run for any length of time the atmosphere in the garage becomes contaminated with the deadly carbon-monoxide gas, which is odourless and invisible. When this as is inhaled in certain quantities, unconsciousness occurs cod often, unless instant attempts at 'resuscitation are made, death follows. Therefore the obvious way is that given above, or, better still, one may slip a length of tubing over the exhaust pipe and convey the exhaust fumes outside the