Читать книгу The Handyman's Book of Tools, Materials, and Processes Employed in Woodworking - Paul N. Hasluck - Страница 45

Floor boards are commonly cramped or tightened up by means of “dogs,” of which two forms are shown respectively by Figs. 118 and 119. The boards being already close together, the dog is inserted across, that is, at a right angle to the line of joint, one point being in one board and one in the other. The further in the dog is hammered, the closer are the boards cramped together. Floor boards can be tightened up without the aid of a floor dog by the method shown at Fig. 120. The board next the wall should be well secured to the joists, and then three or four boards can be laid down and tightened up by means of wedges, as shown. The following is the method of procedure:—Place a piece of quartering about 2 in. by 3 in. next to the floor board, as at C. Cut a wedge, and place it as at B; then nail down a piece of batten to the joists, as at A (both this and the wedge can be cut out of odd pieces of floor board). The wedge B should be driven with a large hammer or axe until the joints of the board are quite close.

Fig. 119.—Dog, Square Section.

Fig. 120.—Wedge Cramp for Floor Boards.

Fig. 121.—Circular Seat with Cut Cramping Pieces.

Fig. 122.—Circular Seat with Flexible Cramp.

Figs. 123 and 124.—Wood Horn of Flexible Cramp.