Printing apparatus for the use of amateurs. Containing full and practical instructions for the use of Cowper's parlour printing press. Also the description of larger presses on the same principle, and various other aaparatus for the amateur typographer ... The pamphlet contains, likewise, numerous specimens of plain and ornamental types, brass rules, checks, borders, ornaments, corners, arms, &, &.

  • Holtzapffel & Co.
Date:
1846
Catalogue details

Licence: Public Domain Mark

Credit: Printing apparatus for the use of amateurs. Containing full and practical instructions for the use of Cowper's parlour printing press. Also the description of larger presses on the same principle, and various other aaparatus for the amateur typographer ... The pamphlet contains, likewise, numerous specimens of plain and ornamental types, brass rules, checks, borders, ornaments, corners, arms, &, &. Source: Wellcome Collection.

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    A NEW SYSTEM OF SCALES OF EQUAL PARTS, Applicable to various purposes of Engineering, Architectural, and General Science. Illustrated by a fac-simile of the scales on copper-jilate. By Charles Holtzapffel. 8vo. cloth, Price 25. Gcf. Published by John Weale, London. Sold also by Holtzapffel & Co., Engine, Lathe, and Tool Manufacturers, 64, Charing Cross, and 127 Long Acre, London. “ Mr Holtzapffel could not have done a better service foi- the profession y than turning his attention to the. construction of scales suitable for their purposes.— We have for tnang pears been in the habit oj using scales made of paper, both for estimating and drawing, on account of their convenience.— We luxve very carefully examined several of the scales, and have much pleasure in testifying their accuracy and utility.—The Civil Engineer and Architects’ Journal. HOLTZAPFFEL AND CO.’S. ENGINE- DIVIDED SCALES, applicable to (Jrngiiuenng, ^rcljitfctural, auK General ^ci'encf. As the least expensive fabric, each scale is ruled in the Dividing Engine, on a different slip of card paper, 18 inches long, the figures and inscription having been previously printed dry. By this arrangement the confusion of crowded scales is entirely avoided, and any of them may be applied directly to the drawing, or compared with one another, without the employment of the compasses. The material of the scales and of the drawing paper being identical, they will be found well adapted to the majority of the drawings used in common practice., Numerous experiments on this head are detailed in the pamphlet. ORDINARY DRAWING SCALES. A series of ^ scales, containing the usual reductions of the foot, from one si.vteenth of an inch to 6 inches to the foot, including three lines of inches, divided into eighths, tenths, and twelltlis, and the English foot decimally divided. Sold also in quarter-sets, or singly. . CHAIN SCALES. A series of 12 scales in chains and links, namely, 1, 1^, 2, 3, 4, 6, 8, 10, 16, 20, 30, 40, chains to the inch ; various others, and also scales of chains and miles e.vpressed in feet. PROPORTIONAL SCALES. A series of 25 Proportional Scales, for the enlargement and diminution of dramngs and models, so as to suit all transpositions of scale, required by the limitation of the drawng paper, the copper plate, or of the materials to be used in the Lathe or otherwise. The series gives 400 distinct and different ratios of proportion, whichare giv^n in a tabular form in the Pamphlet. COMPARATIVE SCALES. A series of 24 Comparative Scales, by which any len^h in Berlin, Brussels, English, Florence, French, Leipsic, Lisbon, Munich, Neapolitan, Polish, Rhineland, Roman, Sicilian, Spanish, Swedish, Venetian, Vienna, measures, whether in feet, bracchi, palms, inches, or parts, can be transposed on inspection into corresponding quantities, expressed in any other of the linear measures of the series. The same method is equally applicable to the transposition of the measures, weights, moneys, miles, leagues, &c. of different Countries, and for any of which purposes, scides will be made to order, from the measures of the National Standards given in Kelly’s Cambist. A Series of 24 Scales for showing the comparative bulks and weights of eqiml quantities of the metals, woods, stones, and materials principally used in the arts. Contraction Rules,, used in making foundry patterns. Any of the above, and many other Scales (fully described in the Purn^Metf graduated on separate slips of Card Board, 18 inches long, at ds. the dozen, or separately, at U. each. If ruled to order, 2s. each. Cases covered with cloth, for one dozen, li. tjd.; for tufo dozen, 2#. each. THE LIBRARY, SKETCHING OR POCKET-BOOK SCALE. A rectangle of card, 4^ by 2?, cut out in the annexed form, and divided on the sever.al edges. It combines the Protractor, and ^ the usual Scales for Drawing, and it may be used as a set square, or bevil, parallel rule, Ma-rquois Scale, <kc. Price, on card, 3i., is>, bs., according to the number of graduations. THE ODONTOGRAPH, Invented by the Rev. R. WILLIS, A.M., F.R.S., «/acAr5om'a» Professor, Cambridge, ^c. This is an instrument of easy application, used for describing the teeth of wheels by circular arcs, so that any two wheels of a set may work truly together. Price of the Odontograph on card and Tirnished, .5a. The theoretical e.xplanation of this system of teeth, which has been extensively adopted by practical mens, will be fo<ind in the Trans. InsL Civil Engineers,. VoL II., and in Willis’s Principle* o£ Mechanism, 1842.