PREPAEATION AND USE. 239 



machine made by Eobinson and Andrew, of Stockport ; it 

 is spoken of in very favourable terms by English manu- 

 facturers, and received a diploma of merit at the Phila- ,- > 

 delphia Exhibition. The machine consists of a combina- I " 

 tion of 3 rollers, whose surfaces are made of segments, to 

 which lateral to-and-fro motions are given by cams 

 attached to the stands on which the axles of the rollers 

 rotate. The tobacco occupies the central space between 

 the 3 rollers, and it is carried through the machine by the 

 lateral to-and-fro motions given to the segments. The 

 fillers and wrappers are laid on a table joined to the 

 machine. The filler is placed in the cover, and they pass 

 together between the rollers, whose action twists and 

 compresses the tobacco into a roll ; this is carried forward 

 and wound on a bobbin, revolving in an open frame, and 

 provided with a guide for equalizing the distribution of 

 the tobacco. 



The machine is shown in Figs. 19 (elevation), 20 

 (plan), and 21 (end view). The tobacco is laid on the 

 table a, provided with a rib n, on which the sliding rest b 

 is free to move to and fro ; c d are the two lower 

 segmental rollers, the axles of which revolve in stationary 

 bearings ; e is the top roller, the axle of which revolves 

 in sliding bearings, fitting in the swing-frame /, and each 

 acted upon by a spring o, pressing on a pin communica- 

 ting with the bearing, and putting an elastic pressure on 

 the tobacco. 



Each segment-roller consists of an axle with four 

 segments, best shown in Figs. 22 and 23. The outer 

 shell of the segments is made of hard wood, fitting 

 an inner shell of malleable cast-iron, the projections on 



