Practical problems for vehicle draftsmen and mechanics by Birge R. B. (Raymond Bernard) b. 1890 & Sargent Hugh M. (Hugh McCalder) b. 1869 joint author

Author:Birge, R. B. (Raymond Bernard), b. 1890 & Sargent, Hugh M. (Hugh McCalder), b. 1869, joint author
Language: eng
Format: epub
Tags: Carriage and wagon making
Publisher: Philadelphia, Pa., Ware bros. company
Published: 1912-03-25T05:00:00+00:00

PRICKING OFF CORNER PILLAR ON TWISTED OR WINDING SURFACES OF A LANDAULET BODY W

FOR LAYING OUT JOINT IRONS.

Pbactic^u. Problems for Vehicle Draftsmen and Mechanics.

5 Out of a Coupe Pillar and Construction of Forward Part

of an Enclosed Body

our object is to teach the student how Lipe pillar in detail, which makes a very nstructive problem. In addition we have 1 ujj briefly the ordinary construction for an enclosed body. This will be especially ginner, as it will give him a better insight onstruction.

ecided upon the side view, turn-under and body, we will proceed to lay out the shut pillar. The bevel of the pillar where the d be made to conform as much as possible face of the lock. From this point to the bevel is the same.

I lines II. III. IV. Y and VI, Fig. 1, and m lines 2, 3, 4, 5 and 6, in Fig. 3. Deter-lius the door will swing to open at sections it 5 the bevel is the same as that on the ill open without any trouble, but we cannot on the pillar below section 5, as the turn-)or opening farther away from the center jessitating a greater bevel in order to have ' trying the shut bevel at each section in iiiel points it will be found that the greatest e bottom of the door. Set the trammel lie rear outside edge of the coupe pillar in ion, and describe an arc cutting the inside

and outside edges of the door, and connect intersections with a straight line, thus establishing the bevel on which the door will open at each section.

In order to obtain a perfect fitting door, the lock pillar and coupe pillar must be worked off to these different bevels, causing the inside face of the coupe pillar to be on a twist below the lock. Notice that the bevels of the coupe pillar are worked each time from the rear outside edge of the coupe pillar. This gives us a straight line for the front of the door and rear of coupe pillar in Fig. 1.

Referring to Fig. 3, A, B, C and D are points on the outside of the coupe pillar at sections 2, 3, -i and G. Points a, b, c, d are points on the inside of the coupe pillar at corresponding sections.

From the door line to the inside of the coupe pillar same should be rabbeted out ^4 "i^li to allow for the trimming. This is shown on Fig. 1 at sections II, III and IV, also on Fig. 4 at section YI.

In connection with Figs. 2 and 4 we have shown the header, which should be securely framed into the coupe pillar by means of a mortise and tenon joint, as illustrated in section 10. p in Figs. 1 and 4 represents the head rail or roof rail, into which the coupe pillar should be framed b\' means of a mortise and tenon joint, as illustrated more clearly in Fig. 2 and section 10.

Between the two coupe pillars there are two drop windows which require a center post.

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