Construction Of Joints
: ON THE CONSTRUCTION OF JOINTSIn uniting two or more elements, some particular type of joint is necessary. In framing timbers, in making braces, in roof construction and supports, in floor beams, and in numerous other places, where strength is required, the workman should have at his command a knowledge of the most serviceable methods.
Fig. 292. Bridle Joints. Reference has
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| Fig. 293. Spur Tenon. |
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| Fig. 294. Saddle Joints. |
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Tusk Tenon
Two forms of tusk construction are given. Any number of forms have been devised, all for special purposes, and designed for different kinds of woods. These shown are particularly adapted for soft woods, and the principal feature that is valuable lie... Heel Joints
This is by far the most secure of the framing type of joints. This, if properly made, is much better than the construction shown in the previous illustration, but the difficulty is to make the rafter fit into the recesses properly. This is no excuse... Construction Of Joints
In uniting two or more elements, some particular type of joint is necessary. In framing timbers, in making braces, in roof construction and supports, in floor beams, and in numerous other places, where strength is required, the workman should have... Roofing Trusses
The chapter on Bridge Building gives some suggestions as to form of trusses, the particular types there shown being principally for wide spans. Such trusses were made for one purpose only, namely, to take great weight, and they were, as a conseque... 108 Queen Post
One of two suspending posts in a roof truss, or other framed truss of simple form. Compare with King Post. A, B, tie beam; C, C, queen posts; D, straining piece; E, principal rafter; F, rafter. ... 119 Stile
The main uprights of a door, as A, A; B, B, B, rails; C, C, mullions; D, D, panels. ... 69 Detents
Recesses to lock or to serve as a stop or holding place. ... 95 Lintel
A horizontal member. A spanning or opening of a frame, and designed to carry the wall above it. ... Anchor Joint
This form of connection is designed for very large timbers, and where great care must be taken in making the parts fit together nicely, as everything depends on this. This style is never used where the angles are less than 45 degrees, and the dept... Braced Collar Beam
This is a modification of the last type, but is adapted for thick walls only. The tie rod braces (A, A) have to be brought down low to give a good bracing action, and this arrangement is capable of considerable ornamentation. The steeper the pit... Bridle Joints
This is a form of joint where permanency is not desired, and where it is necessary to readily seat or unseat the vertical timber. It is also obvious that the socket for the upright is of such a character that it will not weaken it to any great exten... Cogged Joints
This differs from the regular tenoning and mortising methods, principally because the groove or recess is in the form of an open gain. It is used where the member is to be inserted after the main structure is put together. <div> <table summar... Door Trim Plane
This is a tool for making mortises for butts, face plates, strike plates, escutcheons, and the like, up to a depth of 5/16, and a width of 3 inches. The principal feature in the plane is the method of mounting the cutter, which can be instantly set ... Double Tusk Tenons
The distinguishing difference between this and the preceding is in the tusk, which in this form of construction goes through the upright member, and is held by a cross key. The double tusk is intended for hard woods, and it is regarded as the fine... Framing Joints
These are the simplest form in which two members are secured together. They are used almost wholly in rafter work, and have very few modifications. The depth of the cut, for the toe of the rafter, depends on the load to be carried, and also on the d... Joggle Joint
This joint is used almost exclusively for brace work where great weight must be supported. The brace has a tenon, and the end must also be so arranged that it will have a direct bearing against the upright, which it braces and supports, or it may ... Miter Boxes
The advantages of metal miter boxes is apparent, when accurate work is required. The illustration, Fig. 267, shows a metal tool of this kind, in which the entire frame is in one solid casting. The saw guide uprights are clamped in tapered sockets in... Raised Surfaces
Fig. 133 shows it in the form of a block, simply by thickening the lower and the right-hand lines. ... Roof Pitch
In Fig. 227 draw a vertical line (A) and join it by a horizontal line (B). Then strike a circle (C) and step it off into three parts. The line (D), which intersects the first mark (E) and the angle of the lines (A, B), is the pitch. In Fig. 228 the ... Router Planes
This is a type of plane used for surfacing the bottom of grooves or other depressions parallel with the general surface of the work. The planes are made in two types, one, like Fig. 281, which has a closed throat, and the other, Fig. 282, with an... Saddle Joint
This is still another manner in which a quickly detachable joint can be constructed. The saddle may be mounted on the main base, or cut into the base piece. An infinite variety of forms of saddles are made, most of them being used in dock work, and ... Saws
As the saw is such an important part of the kit, I shall devote some space to the subject. <em>First</em>, as to setting the saw. The object of this is to make the teeth cut a wider kerf than the thickness of the blade, and thereby cause the saw to t... Shadows Cast By Moldings
Always bear in mind that a curved surface makes a blended shadow. A straight, flat or plain surface does not, and it is for that reason the concaved and the convexed surfaces, brought out by moldings, become so important. <div> <img src="/images/fi... Spur Tenon
This tenon can be used in many places where the regular one is not available. This, like the preceding, is used where the parts are desired to be detachable, and the second form is one which is used in many structures. ... Stub Tenon
This is another form of tenon which is made and designed to be used where it is in close proximity to another tenon, or where the mortises, if made full size, will weaken the member. The long tusk can be shortened, to suit the place where it project... Terms Of Angles
The relation of the lines to each other, the manner in which they are joined together, and their comparative angles, all have special terms and meanings. Thus, referring to the isometric cube, in Fig. 145, the angle formed at the center by the lines...