Self-help Mechanical Drawing: An Educational TreatiseT. Audel & Company, 1903 - 287 σελίδες |
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Αποτελέσματα 1 - 5 από τα 33.
Σελίδα 30
... examples can also be most profitably practiced with pencil and paper . Very rapid drawing upon the board should not be encouraged , as it is likely not to be accurate enough ; again , the board should be entirely free from grease ...
... examples can also be most profitably practiced with pencil and paper . Very rapid drawing upon the board should not be encouraged , as it is likely not to be accurate enough ; again , the board should be entirely free from grease ...
Σελίδα 31
... example , it is intended that the lower point should be made first , next the upper , and lastly the line drawn from the upper to the lower point , but the order may be re- versed ; at one the upper point , at two the lower , at three ...
... example , it is intended that the lower point should be made first , next the upper , and lastly the line drawn from the upper to the lower point , but the order may be re- versed ; at one the upper point , at two the lower , at three ...
Σελίδα 32
... examples and an item of elementary practice never to be forgotten - like the help to be derived by the first round of a ladder . Fig . 18 Fig . 17 . The student will note that the two motions -- at the words one and two - are to fix the ...
... examples and an item of elementary practice never to be forgotten - like the help to be derived by the first round of a ladder . Fig . 18 Fig . 17 . The student will note that the two motions -- at the words one and two - are to fix the ...
Σελίδα 35
... example , fig . 21 , the arrangement of the points is changed - let the student draw at the words , as follows : One ... examples to practice , making first the points and then the connecting lines and afterward the parallel lines to ...
... example , fig . 21 , the arrangement of the points is changed - let the student draw at the words , as follows : One ... examples to practice , making first the points and then the connecting lines and afterward the parallel lines to ...
Σελίδα 36
... examples care should be used in making them of uniform length . There is a difference to be noted between a crooked line and a broken line , the latter being a straight line and the former deviating . from it . Square chalk crayons are ...
... examples care should be used in making them of uniform length . There is a difference to be noted between a crooked line and a broken line , the latter being a straight line and the former deviating . from it . Square chalk crayons are ...
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.