Square the stock of the lever (Chapter II., Paragraphs 2, 3, 4, 5); lay out and execute the dimensions of the lever as shown in the drawing. In forming the notches in the top part of the lever, it would be well to bore holes equally spaced at the proper distance from the edge, and then saw into these holes, thus forming the notches. The piece of strap iron on the front of the lever is to protect it from wear. You can drill the holes in the strap iron with an ordinary drill bit used in a brace. Countersink the holes with an ordinary rose countersink.
The two side pieces are to be fastened to the base with bolts, as indicated in the drawing. It might be well to put the two side braces in position, and fasten them with two or three small brads, making sure that the joints fit snugly on the top edge of the base. Then bore for the bolts through all three of the pieces at once, testing with the try-square to make sure that you are boring perpendicularly (Chapter II., Paragraph 11). Do not bore entirely through from one side (Chapter II., Paragraph 9).
Drive the bolts in position, place a washer on each, and run the nuts on perfectly tight.
The hole for the lever bolt might be bored in like manner by clamping the lever in position between the two side pieces. This can be done by putting them in the vise. When you are attempting to bore through all these pieces of material at one operation, care must be exercised to bore the hole perpendicularly (Chapter II., Paragraph 11).
The rod may be bent by fastening it in the vise at about 1" from the end, carefully bending it over. A few careful blows with . the hammer will help to form a perfect right angle. In like manner another short crook must be bent on the other end. Measure to find the middle of the rod and make the middle bend. By carefully working with this rod you will be able to adjust it so it will fit perfectly.
When the wagon jack is completed, with a sharp steel scraper (Chapter II., Paragraph 16), or wood file and sandpaper, remove all pencil or tool marks, and give it one or two coats of linseed oil. This will make it wear smooth, and will protect it against moisture. It may be painted if desired (Chapter IV., Paragraph 52).
1. Suggestion No. 1 shows a very convenient form of wagon jack which has the advantage of catching at any point, for the rod holds by friction, rather than by a notch as is usually the case. The portion of the rod which does the holding should be mashed slightly so as to present a flat surface and edge. It may require a little experimenting to get it shaped to hold satisfactorily.
2. Suggestion No. 2 shows still another method of providing the wagon jack with a means of holding in position. This notched brace is attached to the lever by means of two small pieces of strap iron, one on either side, as shown in the drawing.