(6). The mechanism controlling the movement of the carriage should act rapidly and uniformly, and its tension should be adjustable. The carriage should have a sure and regular paper feed and be capable of accommodating any smaller width of paper; also the margin regulators and bell trip should be easily and readily altered.
(7). The platen roll should be instantly interchangeable, thereby allowing of a soft substance platen being used for a single copy work and a hard one for manifolding. If the hard platen is of reduced diameter, more perfect alignment is secured on machines employing a complete circle of rigid type bars and a central top carriage.
(8). The line-spacing mechanism should be variable, and effected by one movement at all times; that is, the same movement that accomplishes the line feed should be utilized to return the carriage for a new line.
(9). The ribbon movement should consist of a reliable feeding mechanism, and allow of the fabric being quickly withdrawn, replaced, or adjusted. It should bring the whole surface in contact with the type, and also automatically reverse the endwise travel.
(10). The machine should be as noiseless in operation as possible. Machines differ very much in this particular. The employment of the guides to force the alignment introduces metallic contact, and consequent friction and noise.
COPYRIGHTS
Directions for Securing Copyrights, under the revised act of Congress, which took effect August 1, 1874.
(1). A printed copy of the title of the book, map, chart, dramatic or musical composition, engraving, cut, print, photograph, or a description of the painting, drawing, chromo, statue, statuary, or model or design for a work of the fine arts, for which copyright is desired, must be sent by mail or otherwise, prepaid, addressed: Librarian of Congress, Washington, D. C.
This must be done before publication of the book or other article. No entry can be made of a written title.
(2). A fee of fifty cents, for recording the title of each book or other article, must be enclosed with the title as above, and fifty cents in addition (or one dollar in all), for each certificate of copyright under seal of the Librarian of Congress, which will be transmitted by early mail.