Self-help Mechanical Drawing: An Educational TreatiseT. Audel & Company, 1903 - 287 σελίδες |
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Αποτελέσματα 1 - 5 από τα 37.
Σελίδα 17
... curves abounding in this book , let him consult an experienced draughtsman or teacher , who , by a few strokes of a lead pencil , can easily make them plain ; that knowledge -- which cannot be printed or self - taught - termed the ...
... curves abounding in this book , let him consult an experienced draughtsman or teacher , who , by a few strokes of a lead pencil , can easily make them plain ; that knowledge -- which cannot be printed or self - taught - termed the ...
Σελίδα 27
... curves and figures . Many a man can chalk out on a blackboard , or on a piece of sheet - iron , or on the floor , just what he wants to show , and make his meaning very plain ; hence , in every workshop , and many other places , a ...
... curves and figures . Many a man can chalk out on a blackboard , or on a piece of sheet - iron , or on the floor , just what he wants to show , and make his meaning very plain ; hence , in every workshop , and many other places , a ...
Σελίδα 35
... curve as shown , joining the middle point and the upper point ; now draw the as shown below it ; finally complete figure as shown . curve Fig . 26 . Fig . 27 . Fig . 28 . 66 Fig . 29 . ੧੧ Fig . 30 . Hawkins ' Mechanical Drawing . 35.
... curve as shown , joining the middle point and the upper point ; now draw the as shown below it ; finally complete figure as shown . curve Fig . 26 . Fig . 27 . Fig . 28 . 66 Fig . 29 . ੧੧ Fig . 30 . Hawkins ' Mechanical Drawing . 35.
Σελίδα 36
... curves to complete the figures . When two or more students are working together , with each having a blackboard , the counting may be in concert - or a teacher could count for a class . In these line examples care should be used in ...
... curves to complete the figures . When two or more students are working together , with each having a blackboard , the counting may be in concert - or a teacher could count for a class . In these line examples care should be used in ...
Σελίδα 37
... curve previous to marking it , will guide the eye and give confidence to the hand in chalking the curve . A proper distance from the blackboard is essential , the face being about two feet away from it . Draw with the whole arm extended ...
... curve previous to marking it , will guide the eye and give confidence to the hand in chalking the curve . A proper distance from the blackboard is essential , the face being about two feet away from it . Draw with the whole arm extended ...
Άλλες εκδόσεις - Προβολή όλων
SELF-HELP MECHANICAL DRAWING A N. (Nehemiah) 1833-1928 Hawkins Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
addendum circle Area axis beam compasses bisect blade Boiler bolt called center line Circum circumference compasses curved line cylinder desc Diam diameter dimensions direction distance dividers dotted draughtsman drawing board drawn edge end view equal erased figure fingers finished free-hand front elevation gear geometry hand Hawkins illus illustration inches India ink instruments length letters Linear Perspective machine measurements mechanical drawing object oblique Office Rules outlines paper parallel lines pencil perpendicular picture plane pitch circle pitch line polygon position practice projection proportion radius represents retina right angles rods scale screw section lines Set-Square shading shaft sheet shop drawings shown in fig shows side views sketch solid space spur gear spur wheel square Steam Engine steel straight line student surface T-square tee-square thickness of tooth three views thumb tion top view triangle vanishing points vertical lines visual rays width
Δημοφιλή αποσπάσματα
Σελίδα 238 - 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, when used, should be open.
Σελίδα 87 - POSTULATES. I. LET it be granted that a straight line may be drawn from any one point to any other point.
Σελίδα 240 - ... at the lower lefthand corner, all within the marginal line, but in no instance should they trespass upon the drawings.
Σελίδα 18 - ONE step and then another, And the longest walk is ended ; One stitch and then another, And the largest rent is mended ; One brick upon another, And the highest wall is made ; One flake upon another, And the deepest snow is laid.
Σελίδα 238 - The scale to which a drawing is made ought to be large enough to show the mechanism without crowding...
Σελίδα 95 - From a point P in this line draw the perpendicular P B to the line AB, and on P describe the circle BD, touching the lines and cutting the center line at E. From E draw EF perpendicular to the center line, cutting AB at F, and from Fig.
Σελίδα 240 - They should, if possible, measure at least one-eighth of an inch in height, so that they may bear reduction to one twenty-fourth of an inch; and they may be much larger when there is sufficient room.
Σελίδα 87 - A Proposition, is something which is either proposed to be done, or to be demonstrated, and is either a problem or a theorem.
Σελίδα 88 - AXIOMS. 1. Things which are equal to the same thing are equal to each other. 2. When equals are added to equals the wholes are equal. 3. When equals are taken from equals the remainders are equal.
Σελίδα 53 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.