Hydraulic Tyre Setting.
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One of the difficulties which has caused some amount of inconvenience to heavy wagon users in the South of England has now been removed by Mr. H. C. Bauly. When the large-size artillery wheels have needed re-tyring, it has been necessary to send them away to Yorkshire, with the inevitable delays which a double railway journey involves. Mr. Bauly, foreseeing that there must immediately be a large demand for this class of work, has recently installed upon his premises at Bow Road, E., the largest hydraulic tyre setter in London, and we inspected this at work a few days ago. A gas engine drives the hydraulic compressors, which work with oil as the pressure medium. From the pumps the oil is conveyed to 18 rams arranged horizontally around the circumference of the setter. Each ram has a maximum throw of about 2iin. Attached to each ram (in slides) are dies, which can be varied according to the size of tyre in hand, and can be faced up by additional dies
for outside sizes. Two tons to the square inch is the maximum pressure available, but this is rarely used, as about it ton is found sufficient for all purposes. The machine has a very wide range of output, the few minutes to change the dies being sufficient for it to tackle wheels from a diameter of 2ft. 6in. up to 6ft. 6in. It will also deal with any width of tyre up to x2in. and any thickness up to 'tin. By the aid of this machine it is possible to tyre a wheel in five minutes, but a little longer time is given, so that the pressure shall be brought on very gradually. The enormous advantages of this hydraulic setter as compared with the ancient plan of heating the steel tyre and shrinking it on to the wood needs. hardly pointing out. It is so easy (and comparatively cheap) to have either a new wheel tyred or an old one refitted that users will find an economy in periodically (about every 5,000 miles) sending their wheels to Mr. Bauly, whose address is t3ta, Bow Road, London, E.