The two G’s must have a one fourth inch hole bored one fourth of an inch from the back end, and a corresponding one bored through E about an inch from the bottom; these holes are for pins, on which the G’s may turn.
Instead of the six-inch C which joins the two G’s at a point one and one half inches from outer end, there should be two pieces seven inches long fastened with brads, at points respectively three inches and six and one half inches from outer ends of G. The piece six and one half inches from end can be left out—though it looks neater with it—but the back will shut closer without it.
FIG. 2.
Now put the peg through the G’s and into the E’s.
Draw the back of the book-rest from the front, put ends of G’s through the spaces bounded by pieces A, B and D, and you will find that the G’s rest in the corners made by A and B.
When you want to shut up the book-rest, you must draw the G’s out, and turn them away from front on to the back of the E’s, and then shut the E’s up on to the A’s as in [figure].
I don’t think this quite as pretty as the fixed book-rest, and there are of course other ways of changing the original plan which would be more ornamental; but this is very easy and will answer the purpose. You will find it good fun and good practice to experiment on changes in any of the designs given, after you have mastered the simple forms and the plain directions given in these papers.