A Textbook on Mechanical Engineering ... |
Common terms and phrases
axis base line bolt border line center line mn circle cone construction convenient corresponding Cosine Sine Cosine Cotang Tang Cotang cube curve cutting plane cylinder describe an arc diameter distance divided dotted lines draftsman draw the center draw the line DRAWING PLATE edge lines eleva ellipse figure formula front elevation frustum full view hole horizontal line inches indicated interedge lines left-hand letters line A B lines of sight located mantissa method number of equal object octagonal prism outline paper parallel lines pencil perpendicular pitch position pounds pressure prism projection drawing pyramid radius equal represented revolutions per minute right angles rivet scale screw screw thread sectional view shown in Fig shows side elevation similar Sine Cosine Sine solid space square straight line stretchout student Tang Cotang Tang tangent temperature thread tion triangle true length upper vertical lines weight
Popular passages
Page 63 - The pressure per unit of area exerted anywhere upon a mass of liquid is transmitted undiminished in all directions, and acts with the same force upon all surfaces, in a direction at right angles to those surfaces.
Page 64 - A Pyramid is a solid whose base is a polygon, and whose sides are triangles meeting in a common point, called the Vertex.
Page 60 - W= weight of body at the surface; w = weight of a body at a given distance above or below the surface ; d= distance between the center of the earth and the center of the body ; R = radius of the earth = 4,000 miles.
Page 28 - Through a given point, to draw a straight line parallel to a given straight line.
Page 58 - To find the area of a segment of a circle: Rule. — Draw radii from the center of the circle to the extremities of the arc of the segment ; find the area of the sector thus formed, subtract from this the area of the triangle formed by the radii and the chord of the arc of the segment, and the result is the area of the segment.
Page 38 - B, from B to C, etc. will form the required octagon. PROBLEM 18. — To inscribe a regular polygon of any number of sides in a given circle.
Page 64 - The curve formed by the intersection of a cone by a plane parallel to one of its elements is called a parabola. The plan and front elevations of the cone and curve of intersection are found in a manner similar to the method used in the last problem. To find the side elevation, proceed as follows : Draw the side elevation O" A" B" of the cone with the center line tv as its axis.
Page 70 - Law. — The temperature remaining the same, the volume of a given quantity of gas varies inversely as the pressure.
Page 52 - O of the two center lines as a center, and with a radius equal to the radius of the hole, describe a circle. Through the points A, B, E, and F, draw indefinite straight lines parallel to m n. On both sides of the center line/ q, lay off on these lines DS and SA, equal to £ DA, and HR and RE, equal to £ HE, both DA and HE being measured on the frustum.
Page 64 - That is, the upward pressure exceeds the downward pressure by the weight of a volume of water equal to the volume of the body.