PRINTING ROLLERS 665 



A simple arrangement of apparatus for printing and numbering cards has been 

 introduced by Mes'srs. Harrild and Sons. The types are fixed in a metal frame, -which 

 also carries the numbering discs. This frame is mounted on a rocking shaft, and is 

 furnished with a handle, whereby it is rocked to bring down the types and discs upon 

 the card, to produce the impression. When the frame is raised again, the units disc 

 is moved forward one figure, and the types are inked by a small roller, which takes its 

 supply of ink from an inking-table, that forms the top of the frame. 



M. Baranowski, of Paris, invented a machine for printing and numbering tickets, 

 and also indicating the number printed. The types and numbering discs are carried 

 by a horizontal rotating shaft, upon which, near each end thereof, is a metal disc ; and 

 upon the periphery of these discs a metal frame is affixed, which carries the types and 

 numbering discs, and corresponds in curvature with the edge of the discs. The types 

 for printing the inscription upon the ticket are arranged at right angles to the length 

 of the shaft, which position admits of some lines of the inscription being printed in 

 one colour, and the remainder in another colour. In the type-frame a slot or opening 

 is formed lengthwise of the shaft ; and behind this opening are three numbering discs, 

 and three discs for indicating the quantity of tickets numbered, all standing in the 

 same row. The numbering discs are made with raised figures, which project through 

 the slot, in order to print the number upon the ticket ; and on the peripheries of the 

 registering discs (which move simultaneously with their corresponding numbering 

 discs), the figures are engraved. The tickets to be printed and numbered are placed 

 in a rectangular box or receiver, having at the bottom a flat sliding piece, which has 

 a reciprocating motion for the purpose of pushing the lowest ticket out of the box, 

 through an opening in the front side thereof, beneath an elastic pressing-roller of india- 

 rubber ; the type-frame (with the types and figures properly inked), is at the same 

 time brought, by the rotation of its shaft, into contact with the ticket beneath the 

 pressing roller, and as it continues its motion, it causes the ticket to move forward 

 beneath the pressing roller, and to be properly printed and numbered. The ticket 

 then falls from the machine ; and the type-frame, carried on by the revolution of the 

 shaft, brings that number on the registering discs which corresponds with the number 

 printed on the ticket, under a small opening in the case, covered with glass ; whereby 

 the number of tickets printed will be indicated. 



PRINTING, NATURE. See NATURE PRINTING. 



PRINTING ROLLERS. Elastic inking-rollers were introduced by Messrs. 

 Donkin and Bacon. They are made of a mixture of glue and treacle, or of glue and 

 honey ; the American honey, it is said, being preferred. 1 pound of good glue is 

 softened by soaking in cold water for twelve hours, and then it is united, by means of 

 heat, with about two pounds of ordinary treacle. See PRINTING. 



Messrs. Hoe & Co. give the following directions for making and preserving 

 composition-rollers : For cylinder-press rotters, Cooper's No. 1. x glue is sufficient 

 for ordinary purposes, and will be found to make as durable rollers as higher-priced 

 glues : 



Place the glue in a bucket or pan, and cover it with water ; let it stand half an 

 hour, or until about half penetrated with water (care should be used not to let it soak 

 too long), then pour it off, and let it remain until it is soft. Put it in the kettle and 

 cook it until it is thoroughly melted. If too thick, add a little water until it becomes 

 of proper consistency. The molasses may then be added, and well mixed with the 

 glue by frequent stirring. When properly prepared, the composition does not require 

 boiling more than an hour. Too much boiling candies the molasses, and the roller 

 consequently will be found to lose its suction much sooner. In proportioning the 

 material, much depends upon the weather and temperature of the place in which the 

 rollers are to be used. 8 pounds of glue to 1 gallon of sugar-house molasses, or 

 syrup, is a very good proportion for summer, and 4 pounds of glue to 1 gallon of 

 molasses for winter use. 



Hand-press rollers may be made of Cooper's No. 1^ (one and a quarter) glue, using 

 more molasses, as they are not subject to so much hard usage as cylinder-press rollers, 

 and do not require to be as strong ; for the more molasses that can be used the better 

 is the roller. Before pouring a roller, the mould should be perfectly clean, and well 

 oiled with a swab, but not to excess. 



Rollers should not be washed immediately after use, but should be put away with 

 the ink on them, as it protects the surface from the action of the air. When washed 

 and exposed to the atmosphere for any length of time, they become dry and skinny. 

 They should be washed about half an hour before using them. In cleaning a new 

 roller, a little oil rubbed over it will loosen the ink, and it should be scraped clean 

 with the back of a case-knife. It should be cleaned in this way for about one week, 

 when lye may be used. New rollers are often spoiled by washing them too soon with 



