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Fig 22. Clamp Nailing Press 
Cover boards to table, extending about half over cross pieces (20) on each side Length of 
table, 64 inches. 
Side board to table The palit between the cross pieces (2U) 1s cut down to allow a box 
with bulged bottom to slide oft the press. 
Uprights for attachment of levers (5 and 9). 
Lees of table, 2814 inches lone, 1% inches square. (All the arms, legs and levers of the 
press may be made of 114:314-inch stuff ) 
Levers, 24 inches long. 
Upright arms, 30 inches long 
Steel springs, 3% inch inside diameter The two attached to the levers (5) are fastened 
at the upper end to spanner (19). The center spring is attached to the foot lever (9) 
and a pulley (17). All springs are shown relaxed 
Spring attached to upright arm (6) and support (3). These springs should be long and 
light, such as are often used on screen doors. 
Foot lever, bolted to uprights (3) at back, and working with catch plate and ratchet in 
front It is fastened to plaie (135). 
Brace for legs and lower support for uprights. Three inches from ground 
Horseshoe plate for gripping box cleats and cover It is attached to arm (6) with flat- 
headed stove bolts, and must be made very true 
Iron plates bolted to levers (5), with large holes in piojecting ends, allowing the bolts (16) 
to slide freely. 
Lower plate under leaver (9), 10 which it is bolted loosely, with large holes in each end 
for free play of bolts (16). 
Side plate joining lever (5) and arm (6). Two bolts to arm, and one, fitted loosely, to 
ever 
Iron ratchet 10 engage plate on the front lever (9). 
Half-inch bolts, 2% inches long, working loosely im the holes in the plates (12 and 13). 
Three small pulleys for rope attached to arms (6). Center pulley is attached to center 
spring (7). The other two pulleys are attached to spanner (19). 
Strong 14-inch cord that will not stretch. Runs across from arm to arm (6), passing 
through the three pulleys (17). 
Spanner running parallel with side, back about 10 inches from front side and directly under 
center of box. 
Cross pieces (end view), providing support for box. Attached to it is spanner (19). 
Grooves for holding box in place. They are a trifle over 19%4 inches apart To accommo- 
date the special box, which is 20 inches long, strips may be nailed to the table top one 
inch back from the opening on either side. 
The top of the table must have slots cut in it to allow working of arms. Tables may be of any 
width desired, but arms should be conveniently near the front. 
