Principles of decorative design . Take ourordinary forms of tea-pot, and see how far the centre of the weight (the centre ofgravity) is from the handle in a horizontal direction, and you will be able to judgeof the leverage acting disadvantageously to the ]Xrson who may pour te;) from such 140 PIIINCIPLES OV DKSIGN. pots. N(i\v if the part which is grasped is to the right or left of a right linepassing througli the centre of gravity of any vessel, there is leverage acting tothe disadvantage of the person desiring to ponr from that vessel, and this leverageincreases just as the point held is re
Principles of decorative design . Take ourordinary forms of tea-pot, and see how far the centre of the weight (the centre ofgravity) is from the handle in a horizontal direction, and you will be able to judgeof the leverage acting disadvantageously to the ]Xrson who may pour te;) from such 140 PIIINCIPLES OV DKSIGN. pots. N(i\v if the part which is grasped is to the right or left of a right linepassing througli the centre of gravity of any vessel, there is leverage acting tothe disadvantage of the person desiring to ponr from that vessel, and this leverageincreases just as the point held is removed fnmi the central line spoken of. Fi. 151 would pour when in the position shown in Fig. 15£, but see how farthe hand that holds it would he to the right of the centre of gravity («), which distanceis of -reat disadvantage, as it causes the vessel to appear much heavier than itactually is, and recpnres a much greater expenditure of force in order that the tea-potbe put to its usj than is necessary were it properly Fig. 101. Fiff. 155. Fig. 153. The law governing the application of handle and spnut to vessels is this, andthe same principle applies whether the vessel be formed of metal, glass, or earthen-ware :—Find the centre of gravity of the vessel, wliich can easily be done by lettinga vertical line drop over it when placed in two different positi(]ns, as m Figs. 153,154, and where the two vertical lines intersect, as in a in Fig. 155, is the centre ofgravity. The position of the handle being iixed on, draw a line through the centreof the handle, and continue it througli the centre of gravity of the vessel. The spoutmust now be at right angles to this line. If this lie the ease the vessel will pourfreely while the handle is just hung upon the thuml) or linger of the person desiringto pour from it, as may be seen from Figs. 15t), 157, in which the straight line A, SPOUTS -IXD HANDLES. 141 passing through the centre of gravity a, is at right angles, as it shoul
Size: 1833px × 1363px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookdecad, bookpublisherlondon, booksubjectdecorationandornament
