Blueprint reading; a practical manual of instruction in blueprint reading through the analysis of typical plates with reference to mechanical drawing conventions and methods, the laws of projection, etc . dard fireshutter. A straight line indicates the presence of wire glass. Theinitial H within a hollow square is used to represent a hoistway or hatch. _S_ | | | | | | | [ The letter S within a hollow square is used to represent a stairway. A stairway is also represented by a ^ rectangular outline crossed by straight lines supposed to represent the stair steps. A solid black oblong figure repre
Blueprint reading; a practical manual of instruction in blueprint reading through the analysis of typical plates with reference to mechanical drawing conventions and methods, the laws of projection, etc . dard fireshutter. A straight line indicates the presence of wire glass. Theinitial H within a hollow square is used to represent a hoistway or hatch. _S_ | | | | | | | [ The letter S within a hollow square is used to represent a stairway. A stairway is also represented by a ^ rectangular outline crossed by straight lines supposed to represent the stair steps. A solid black oblong figure represents a horizontal boiler, while a solid black circle represents a vertical boiler. A thin line around the solid black oblong figure |^BBB|^ and the margin 60 HF. colored in red represents a horizontal steam boiler which is brickedin. A small thin-lined circle with diagonals and a black dot at their intersection OO-^.a indicates an automatic sprinkler riser. A sprinkler pressure tank is represented thus \ 1). Plate XXXVI is a copy of a map issued in connection with theadoption of these symbols by the Fire Underwriters UniformityAssociation and brings into use practically all the symbols needed. 65. MECHANICAL DRAWING PART I The subject of mechanical drawing is of great interest andimportance to all mechanics and engineers. Drawing is a methodof showing graphically the minute details of machinery; it is thelanguage by which the designer speaks to the workman; it is the mostgraphical way of placing ideas and calculation on record. A briefinspection of an accurate, well-executed working drawing gives abetter idea of a machine than a lengthy written or verbal description*The better and more clearly a drawing is made, the more intelligentlythe workman can comprehend the ideas of the designer. Thoroughtraining in this important subject is necessary to the success of every-one engaged in mechanical work. The draftsman is dependent for his success, to a certain extent,upon the quality
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmechanicaldrawing
