The Purchase Department.
Page 19
Page 20
If you've noticed an error in this article please click here to report it so we can fix it.
Where to Buy your Supplies.
Interesting and New Supplies from Factoryand Showroom.
Self-,oiling Bearings.
Of recent years, the question of suitable bearings for shafting has received much attention, owing to the increased demand for greater transmission efficiency. A satisfactory example of a swivelling
self-oiling bearing is that made by Samuel Platt, Ltd., King's Hill Foundry, Wednesbury. When this device is in use, the bearing portion of the shaft is flooded with oil by means of two revolving rings, which dip into an oil reservoir. This ensures the shafts' being supported on a film of oil, so reducing friction and wear to a minimum.
Owing to the construction, there is little or no waste of oil, as, after being used on the shaft, the surplus is returned to the reservoir, and can be employed again and again. The maker claims that one filling of oil will supply the shaft with sufficient lubricant for 12 months of continuous running. A large number of these supplies has been ordered by motorbus companies, railway companies, and big engineering concerns in many parts of the world.
A Safety Starting Handle.
It is both annoying and expensive for a user of motorvans to have a driver incapacitated from work through the breaking of an arm, owing to backfiring taking place when starting the engine. The safety handle supplied by Q. T. Riches and Co., Ltd., Store Street, Tottenham Court Road, W., is intended to obviate any such risk. This appliance is as free from complication as is possible. It consists, briefly, of a pawl-and-ratchet action working inside a metal case.
The handle is substituted for the ordinary starting handle, and for this purpose it is provided with an adapter, which is capable of being fitted to the usual shaft of any make of chassis. As has been mentioned, small wearing parts are practically eliminated.
You Can Get It At " E.S.W. (Worthing).—In reply to your query as to the makers of heating apparatus for the insides of vans, you should get in touch with Messrs. Thompson, Bennett and Co., Arden Workst Cheapside, Birmingham, who are makers of cast-iron boxes of special shape, through which the hot exhaust gases pass. " A.E.B." (Bow).—You should get into touch witb.. Alfred Herbert, Ltd., Coventry, and send samples of the work you wish to machine. This company will then quote you prices for a suitable capstan lathe, and will, at the same time, give you an estimate of the machining cost.
Improved Vices for the Wo.kshop.
Mr. Horace W. Shaw, John Bright Street, Birmingham, markets a range of vices which are of particular interest to repair works and motor shops generally. The flat vice has a top and bottom grip, which consists of a plate having a bolt let into it. A dog-plate and a nut fit over this bolt. This appliance is intended to be held in the jaws of an ordinary bench vice, either of the leg or the parallel type, and small finished articles, such as bushes, terminals, small screws, metal nuts, and so on, can be held and worked with ease with the aid of this improved appliance. Another pattern of vice sold by Mr. Shaw, is the bench type with swivelling jaws. This enables awkwardly-sized work to be gripped with safety, Special V-snaped jaws are supplied with this vice, which can be dropped into place when required, for holding circular bars and similar work. The tools intended for use on planing, milling and drilling
machines should also interest our readers. These productions have several strong and exclusive points in their favour, amongst these being that the work can be adjusted as well as gripped, by means of the swivelling jaws, and the pull-down action cannot be blocked by dirt or swarf. A Mechanical Shock Absorber.
The device illnstrated herewith shows a neat shock absorber manufactured by Benton and Stone, .Ltd., Birmingham. The makers claim that this appliance is not adversely affected by climatic conditions. It is of the friction type, which works as follows : Friction is produced between two plates by the action of a powerful helical spring. The long arm acts as a nut, on which the base-plate acts as a bolt. The thread on the bolt is a double one, and when the nut is screwed up it compresses the spring, and this acting on the plates produces the necessary friction for absorbing the movement of the van. The higher the vehicle moves, the more the nut screws on the bolt, further compressing the spring on the plates. Immediately the van comes down to road level, the nut is slackened and the friction ceases.
The "UnitnatooL" The device saddled with this weird name will he found of the greatest use in the small repair shop such as is generally maintained by the user of a small motorvan fleet. It dispenses largely with the necessity for a special keyway-cutting machine. Th...s appliance can be fitted to the ordinary centre-lath without any great alterations being required. The makers claim that, owing to the constructio adopted, there is no spring in the free end of the cutter bar. The " Unimatool " has an adjustable roller guide which keeps the cutter in a firm position during the operation of cutting, and prevents it from jumping, even when a long keyway is being cut. A milled nut and screw in an accessible position enables the tool to be adjusted to any desired height.
Oil Pumps and Lubricators.
The annual oil wastage on tractors and vehicles must amount to a very considerable quantity. The lubricators made by the British Manzel Oil Pump Co., Carlisle, are intended to obviate a considerable amount of this wastage. The tractor-type lubricator is supplied with a double plunger pump, on which one plunger takes 'the oil from the reservoir while the other forces it to the cylinders, crank pins, and other parts requiring lubrication. The oil supply is adjusted by means of a feed regulator. The entire mechanism is located in the oil reservoir, and so works continually in an oil bath. Stuffingboxes and glands are dispensed with, and the internal anatomy of the device is very accessible.
General utility lubricators for tractors. The Auxiliary Lubricator.
The drawing reproduced herewith represents the latest feed pump lubricator made by Benton and Stone, Ltd., of Bracebridge Street, Birmingham, This company is already well known by its patented appliances, which are intended to supplement many mechanical parts which have been, in the course of time, adopted as standard features on motor chassis. There is little that can go wrong on the pump which is here illustrated. When the plunger is depressed, the cylinder is filled with oil, and, if it be desired to feed this oil direct, to some part requiring lubrication, the feed is immediately begun following the depression of the plunger. Should it be desired to knock the pump out of action, the small clip shown at the top prevents the oil from leaving the barrel, when it is slipped over the piston collar shown. This is a useful appliance, which can be fitted as an auxiliary to many chassis where possibly a rather important, but isolated, part requires some little special attention in lubricating.