The Hyatt Roller Bearing.

Progress, Volume IV, Issue 1, 2 November 1908, Page 18

The Hyatt Roller Bearing.

This is an important invention worthy the notice of engineers all the world over. It is claimed for it that this well-known flexible roller bearing corrects the errors of the principal types of bearing, and has besides merits and advantages of its own. In the ordinary bearing, for example, the load must be carried on a limited number of points of contact, a condition, immaterial in bicycles, sewing machines, and machines of that class, but where the saving of power is essential very defective. The distinctive feature of the Hyatt Flexible Roller Bearing is the roller, which is made from

a strip of steel wound into a coil or spring of a unform diameter. The greatest advantage of a roller of this construction lies in its flexibility, enabling it to present at all times a bearing along its entire length, resulting in a uniform distribution of load on the roller itself, as well as the surfaces on which and in which it operates. All tendency, therefore, to distortion of these surfaces is entirely eliminated, for the roller will adjust itself to all irregularities that may be present, there being no necessity for hardening the various parts of the bearing, any soft steel surface satisfactorily answering all requirements. It will also be seen from its construction that the roller essentially acts as an oil reservoir, while the spiral and roller together perform the function of an oil carrier, thereby assuring perfect lubrication of all parts at all times, making it possible to operate the bearing for a considerable interval without attention. By varying the diameter of the roller as well as the thickness, width and character of stock from which

it is made, it is possible to so vary its nature as to enable it to operate under the most varied conditions, from the heaviest load on one hand to the highest speed on the other. Of this type of roller there are now over tw o million in use. The Hyatt Roller Company, of London, are the manufacturers ; they have wide ramifications in the old and new worlds. Messrs. E. W. Hursthouse and Co., 156 Featherston street, Wellington, are the sole agents for the Dominion. They record having supplied several firms and hear that the bearings are giving great satisfaction.