What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
alternate position angle arrow-heads assembly drawing beveled bill of material blade blue-print paper Bolt bolt-heads bond-paper Border Lines boxwood scale broken cast celluloid center line circle circular arcs column should contain commercial mechanical drawing compass convenient curved ruler dash Descriptive Geometry designed detail drawing dimension-line dimensions distances drafting-room draftsman drawing-board drawing-paper drawing-pencil drawn edge exposure figures finished flat Foundation Drawings given glazed side grade gum arabic handle hatch-lines head hole horizontal indicate instruments invisible line knurled length letters light lines of projection Logarithmic spiral machine marks mension needle-point nibs nickel-plated steel notes oilstone outline pencil pencil draw Piping Drawing placed plane pricker-point Print Paper print-paper protractor red ink right line round piece rubbed ruling-pen scheming sheet screw section-lines sectional view shade-line short shown side view sketches space square steel eraser steel scale straight-edge Structural Steel surface shading T-square Tacks tracing-cloth triangle usually V-thread width writing-pen
Page 168 - They must be so placed in the close and complex parts of drawings as not to interfere with a thorough comprehension of the same, and therefore should rarely cross or mingle with the lines. When necessarily grouped around a certain part they should be placed at a little distance, where there is available space, and connected by lines with the parts to which they refer.
Page 164 - The size of a sheet on which a drawing is made must be exactly 10 by 15 inches. One inch from its edges a single marginal line is to be drawn, leaving the "sight
Page 162 - When the invention consists of an improvement on an old machine the drawing must when possible exhibit, in one or more views, the improved portion itself, disconnected from the old structure, and also in another view, so much only of the old structure as will suffice to show the connection of the invention therewith.
Page 164 - This direction applies to all lines however fine, to shading, and to lines representing cut surfaces in sectional views. All lines must be clean, sharp, and solid. Fine or crowded lines should be avoided. Solid black should not be used for sectional or surface shading. Freehand work should be avoided wherever it is possible to do so.
Page 164 - One inch from its edges a single marginal line is to be drawn, leaving the " sight " precisely 8 by 13 inches. Within this margin all work and signatures must be included. One of the shorter sides of the sheet is regarded as its top, and, measuring...
Page 166 - By the observance of this rule the effectiveness of the work after reduction will be much increased. Shading (except on sectional views) should be used only on convex and concave surfaces, where it should be used sparingly, and may even there be dispensed with if the drawing be otherwise well executed!
Page 164 - All drawings must be made with the pen or by a photolithographic process which will give them satisfactory reproduction characteristics. Every line and letter (signatures included) must be absolutely black. This direction applies to all lines, however fine, to shading, and to lines representing cut surfaces in sectional views. All lines must be clean, sharp, and solid, and they must not be too fine or crowded. Surface shading, wThen used, should be open.
Page 170 - When the figure is longer than the width of the sheet, the sheet should be turned on its side with the top at the right.