Bit Braces
: SPECIAL TOOLS AND THEIR USESThese tools are now made with so many improved features that there is really no excuse for getting poor tools.
The illustrations show merely the heads and the lower operating parts of the tools. Fig. 271 shows a metal-clad ball-bearing head, so called, as its under side is completely encased in metal securely screwed to the wood and revolving against the ball thrust bearing.
D represents a concealed ratchet in which the cam ring governs the ratchet, and, being
The ratchet mechanism is interchangeable, and may be taken apart by removing one screw. The two-piece clutch, which is drop forged, is backed by a very strong spring, insuring a secure lock. When locked, ten teeth are in engagement, while five are employed while working at a ratchet. It has universal jaws (G) for both wood and metal workers.
In Fig. 272, B represents a regular ball bearing head, with the wood screw on the large spindle and three small screws to prevent its working loose. This also has a ball thrust. E is the ratchet box, and this shows the gear teeth cut on the extra heavy spindle, and encased, so that the user's hands are protected from the teeth.
The interlocking jaws (H), which are best for taper shanks, hold up to No. 2 Clark's expansion, and are therefore particularly adapted for carpenter's use.
Fig. 271. Fig. 272. Fig. 273. Types of Bit Braces.
In Fig. 273 the plain bearing head (C) has no ball thrust. The head is screwed on the spindle and held from turning off by two small screws. The open ratchet (F) shows the gear pinned to the spindle and exposed. This has alligator jaws (J), and will hold all ordinary size taper shank bits, also small and medium round shank bits or drills.
Fig. 274. Fig. 275. Fig. 276. 
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76 Fylfat
A rebated cross used as a secret emblem and worn as an ornament. It is also called Gammadium, and more commonly known as Swastika. ... 77 Gambrel Roof
A curb roof having the same section in all its parts, with a lower, steeper and longer part. See Curb Roof and distinguish difference. ... 78 Gargoyle
A spout projecting from the roof gutter of a building, often carved grotesquely. ... 79 Gudgeon
A wooden shaft, A, with a socket, B, into which is fitted a casting, C. The casting has a gudgeon, D. <div> <img src="/images/fig80_93.jpg" alt="Fig. 80.-Fig. 93." height="640" width="112"> </div> ... 80 Guilloche
An ornament in the form of two or more bands or strings twisted together or over or through each other. ... 81 Half Timbered
Constructed of a timber frame, having the spaces filled in with masonry. ... 82 Hammer Beam
A member of one description of roof truss, called hammer-beam truss, which is so framed as not to have a tie beam at the top of the wall. A is the hammer beam, and C the pendant post. ... 83 Haunches
The parts A, A, on each side of the crown of an arch. Each haunch is from one-half to two-thirds of the half arch. ... 84 Header
A piece of timber, A, fitted between two trimmers, B, B, to hold the ends of the tail beams, C, C. ... 85 Hip Roof
The external angle formed by the meeting of two sloping sides or skirts of a roof which have their wall plates running in different directions. ... 86 Hood Molding
A projecting molding over the head of an arch, as at A, forming the outer-most member of the archivolt. ... 87 Inclave
The border, or borders, having a series of dovetails. One variation of molding or ornamentation. ... 88 Interlacing Arch
Arches, usually circular, so constructed that their archivolts, A, intersect and seem to be interlaced. ... 89 Invected
Having a border or outline composed of semicircles or arches, with the convexity outward. The opposite of engrailed. ... 90 Inverted Arch
An arch placed with the crown downward; used in foundation work. ... 91 Keystone
The central or topmost stone, A, of an arch, sometimes decorated with a carving. ... 92 King Post
A member, A, of a common form of truss for roofs. It is strictly a tie intended to prevent the sagging of the tie beam, B, in the middle. If there are struts, C, supporting the rafters, D, they extend down to the foot of the King Post. ... 93 Label
The name given to the projecting molding, A, around the top of the door opening. A form of mediæval architecture. <div> <img src="/images/fig94_104.jpg" alt="Fig. 94.-Fig. 104." title="" height="640" width="109"> </div> ... 94 Louver
The sloping boards, A, set to shed rain water outward in an opening of a frame, as in belfry windows. ... 96 Lug
A. projecting piece, as A, to which anything is attached, or against which another part, like B, is held. ... 97 M-roof
A kind of roof formed by the junction of two common roofs with a valley between them, so the section resembles the letter M. ... 98 Mansard Roof
A hipped curb roof, that is, a roof having on all sides two slopes, the lower one, A, being steeper than the upper portion or deck. ... 99 Newel Post
The upright post at the foot of a stairway, to which the railing is attached. ... A Full Kit Of Tools
A kit of tools necessary for doing any plain work should embrace the following: <blockquote> 1. A Hatchet.<br> 2. A Claw Hammer—two sizes preferred.<br> 3. Cross-cut Saw, 20 inches long.<br> 4. Rip Saw, 24 inches long.<br> ... A True Perspective Of A Cube
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