ROLLER-SKATING 



ROLLO 



Roller-Skating. Pastime of 

 skating on wheels, usually on a 

 floor of polished wood or cement. 



Roller-Skating. Ball-bearing 4-wbeel 

 type of roller-skate 



This form of skating was in vogue 

 in the United Kingdom as early as 

 1800, but was not publicly ex- 

 ploited until 1815, at the Floral 

 Hall, Covent Garden, London. At 

 first a fixed axle type of skate was 

 used, but with the inclined axles 

 principle and four wheels to each 

 skate, introduced from America 

 in 1863, the execution of figures on 

 roller-skates became possible. In 

 1879 the National Skating Asso- 

 ciation was formed to promote the 

 sport ; and in 1890 the Olympia 

 hall, at West Kensington, was 

 opened as a roller-skating rink. 

 With the advent of the ball-bearing 

 skate the pastime increased in 

 favour. See Rink ; Skating. 



Rolleston. Parish of Stafford- 

 shire, England. It stands on the 

 Dove, 3 m. from Burton-upon- 

 Trent, with a station on the N. 

 Staffs. Rly. In it is the township of 

 Anslow. The old church of S. Mary, 

 restored in the 19th century, con- 

 tains monuments of the Mosleys. 

 Rolleston Hall, standing in a fine 

 park, is the seat of Sir Oswald 

 Mosley, Bart., but much of the 

 estate was sold in 1919. Here Sir Os- 

 wald Mosley introduced the manu- 

 facture of standard bread. Pop.900. 

 Rolleston, THOMAS WILLIAM 

 (1857-1920). Irish author. Born 

 at Glasshouse Shinrone, King's 

 County, he" 

 was educated 

 at Rathfarn- 

 h a m and 

 Trinity Col- 

 lege, Dublin, 

 and spent 

 four years in 

 Germany. He 

 then edited 

 The Dublin 

 University Re- 

 view, 1885-86, 

 wrote for the Dublin and London 

 press, and published a Life of Less- 

 ing, 1889. He worked for several 

 organizations for the development 

 of Irish arts and crafts, industries, 

 and trade. At the same time he 

 established his reputation as an 

 interpreter of Irish literature, 

 editing with his father-in-law, 

 Stopford A. Brooke, The Treasury 

 of Irish Poetry, 1900, and writing 

 Imagination and Art in Gaelic 

 Literature, 1900, and Myths and 



Thomas W. Rolleston, 

 Irish author 



Elllolt A Fry 



Legends of the Celtic Race, 1911. 

 His other works include Parallel 

 Paths : a Study in Biology, Ethics, 

 and Art, 1908, and a volume of 

 poems, Sea Spray, 1909. He died 

 Dec. 5, 1920. 



Rolliad, THE. Political satire in 

 verse and prose, published in two 

 parts in The Morning Herald, 1784- 

 85. Its full title is Criticisms on 



Roller-Skating. Champion skater 

 doing the change bracket figure 



the Rolliad, and the skit comprised 

 extracts from an imaginary epic 

 poem, these giving opportunity for 

 caustic comments on contem- 

 porary men and matters. The imme- 

 diate occasion of the satire was a 

 speech made by Col. John (after- 

 wards Lord) Rolle (1750-1842) on 

 the Westminster Scrutiny, when 

 the government attempted to un- 

 seat Fox ; but the attack was 

 mainly directed against Pitt and 

 the members of his government. 

 The Rolliad, a brilliant ephemeral 

 performance, was the production 

 of several witty men of fashion 

 belonging to the Whig party. 



Rollin, CHARLES (1661-1741). 

 French historian. Born at Paris, 

 Jan. 30, 1661, he was educated at 

 the College du Plessis and studied 

 theology. He became professor of 

 eloquence at the College de France, 

 1688, rector of the university, 

 1694-96, and principal of the 

 college of Beauvais, 1699-1712. 

 He there exercised great intellectual 

 influence, but was accused of 

 Jansenism and obliged to retire, 

 and continued to teach at the 

 College de France. His writings 



include the Traite des Etudes, 

 1726-28 ; Histoire Ancienne, 1730- 

 38 ; and the uncompleted Histoire 

 Romaine, 1738. He died Sept. 14, 

 1741. His complete works were 

 edited by Guizot, 1821-27. 



Rollinat, MAURICE (1853-1903). 

 French poet. Born at Chateauroux, 

 Indre, he occupied an administra- 

 tive post in Paris, and early 

 showed literary and musical abili- 

 ties. His father was a friend of 

 George Sand, and he himself was 

 deeply influenced by Poe and 

 Baudelaire. His first book, Dans 

 les Brandes, 1877, attracted little 

 notice, but Les Nevroses, 1883, 

 drew wide attention by its macabre 

 quality. Rollinat then retired to a 

 country life, and published, among 

 other works, L'Abime, 1886, and La 

 Nature, 1892. He died Oct., 1903. 



Rolling Mill. Machine used for 

 rolling plates, sheets, bars, angles, 

 etc., from billets of metal. The 

 simplest form of rolling mill con- 

 sists of two cast-iron cylinders, 

 mounted in standards or housings 

 through which by screws the dis- 

 tance between the rolls can be 

 adjusted. Suitable gearing ensures 

 that the two rollers revolve 

 uniformly with one another. They 

 are driven, through further gear- 

 ing, by a driving engine. The 

 rollers may either be reversed in 

 their action or there may be three 

 rollers, the plate or bar of metal 

 passing through the middle and 

 lower roller on one journey and 

 through the middle and upper 

 on the return, thus obviating the 

 delay due to reversing in a two- 

 roller mill. The whole action of 

 rolling has to be done gradually 

 on account of the great stresses 

 set up, the steel ingots, etc., 

 usually being raised initially to a 

 white heat and reduction taking 

 place down to red heat. For the 

 rolling of sectional forms, e.g. rail- 

 way rails, H-section girder forms, 

 etc., the rollers are grooved. 



Rolling Stock. Name given to 

 the engines, carriages, wagons, 

 trucks, etc., of rly. and tramway 

 companies. See Railways. 



Rollo, ROLF, OR Rotr (c. 860- 

 932). Duke of Normandy. Son of 

 Rognvald of Norway, he left Nor- 

 way about 875, took part in in- 

 vasions of Scotland and England, 



LL- 



Rolling Mill. Diagram of 2-high bar mill and 3-high plate mill. A. Bar mill. 



B. Plate mill. C. Gear box. D. Driving wheel, e. Mill couplings, r. Rolls. 



f. Pressure screws, g. Handles for screwing up rolls 



