EXAMPLES OF CONSTRUCTION AND DRAWING

d	t	d	t
⁹⁄₁₆″	¹⁄₄″	¹⁵⁄₁₆″	⁵⁄₈″
¹¹⁄₁₆″	⁵⁄₁₆″	1¹⁄₁₆″	³⁄₄″
³⁄₄″	³⁄₈″	1¹⁄₈″	⁷⁄₈
⁷⁄₈″	¹⁄₂″	1³⁄₁₆″	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.]

Fig. 53.

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 = (2¹⁄₂)d, it means that the distance from the centre of one rivet to the centre of the next shall be 2¹⁄₂ the diameter of the rivet, see example, page [115.]

Fig. 55.

Fig. 56.

Example.

If the size of the rivet used is ⁷⁄₈ths, then ⁷⁄₈ × 2¹⁄₂ = 2²⁄₁₀ inches nearly, and this gives the proportionate strength of the plate and the rivet, see page [113.]

Fig. 57.

Figs. [57], [58], [59] and [60] show quite clearly the joints and rivet work done in locomotive and marine work. [Fig. 60] shows method of riveting 3 plates, A, B, and C, together.

Fig. 58.

Fig. 59.

Fig. 60.