+--------+--------+---------+---------+
| _d_ | _t_ | _d_ | _t_ |
+--------+--------+---------+---------+
| _9/16″_| _1/4″_ | _15/16″_| _5/8″_ |
+--------+--------+---------+---------+
|_11/16″_| _5/16″_|_1-1/16″_| _3/4″_ |
+--------+--------+---------+---------+
| _3/4″_ | _3/8″_ |_1-1/8″_ | _7/8_ |
+--------+--------+---------+---------+
| _7/8″_ | _1/2″_ |_1-3/16″_| _1″_ |
+--------+--------+---------+---------+
_d_ = DIAM. OF RIVET.
_t_ = THICKNESS OF PLATE.
The small table above is of use in this and the four succeeding pages;
in all places in the drawings where “d” is used it indicates _the
diameter of the rivet_; “t” means _the thickness of the plate_; “p”
stands for _pitch_. The table also shows the proportion of rivet to the
plate—thus, a 1/4-inch plate requires a 9/16 rivet, etc.
It is recommended, in view of the increased disposition on the part of
official examiners to test the applicant’s knowledge of drawing, for
any one interested, to redraw to a _full size_ all the rivets, plates,
and methods of joining the two contained on pages 113-116.
[Illustration: Fig. 53.]
[Illustration: Fig. 54.]
The figures 53 to 60 will be understood without much explanation.
In figures 53 and 54 _the cup head, the conical head and pan head
rivets_ are shown.
Figs. 55 and 56 exhibit the details (and drawings) of single and double
riveting. Where the cut reads p = (2-1/2)d, it means that the distance
from the centre of one rivet to the centre of the next shall be 2-1/2
the diameter of the rivet, see example, page 115.
[Illustration: Fig. 55.]
[Illustration: Fig. 56.]