This section is from the book "A Treatise On Architecture And Building Construction Vol3: Stair Building, Ornamental Ironwork, Roofing, Sheet-Metal Work, Electric-Light Wiring And Bellwork", by The Colliery Engineer Co.. Also available from Amazon: A Treatise On Architecture And Building Construction.
40. The construction of the enclosure, as well as the design shown in Fig. 61, differs considerably from that of the preceding example. With the exception of three details, it is entirely of wrought iron, these exceptions being the sill, the transom, and the molding at the top of the lower panels. By referring to the plan (a) of the small scale detail, Fig. 62, also the section (d), the surroundings governing the design may readily be seen. The main support of the screen is a round bar or column, shown at a, Fig. 61, which consists of a wrought-iron pipe 2 1/2- inches in diameter fitted with a cap and base. The top is secured to the soffit of the brick arch over the partition with an expansion bolt, and also to the cast-iron sill at the floor level. The grille screen is separated from this column by a small post b, which forms the sides of the grille frame and is finished with base and finial. It is secured to the main column b by collar straps c on the lower part, and by the transom extension d at the top. The jambs of the door opening are formed of half rounds to correspond to the post b and to strengthen the center of the screen. The space between the post and the partition is fitted with a small bar f to fill the space between the column a and the side walls. The sill shown in detail at (f), Fig. 62, has a tongue b cast on it to receive the finished floor, which is grooved to fit over this tongue and thereby make a snug and unyielding joint. The stationary panels of the screen each side of the door have a dado panel in plate iron, and grille-work above; the same treatment being used in the door.
41. A section of the screen at c, Fig. 61, shows the sliding door on the inside of the shaft and the hanger above. Fig. 62 shows, at (f), a section through the cast-iron sill and the method of screwing it to the wooden-floor construction. At d is a section of the bottom of the sliding door, while at c is the fixed panel. The sections of the upper moldings on the dado panel of the door and screen are shown in Fig. 62 (e); and at g is seen the elevation of the lower part of the bars of the grille, and the screw which secures each of them to the channel iron forming the surrounding and protecting frame. In Fig. 62 (c) a section of the transom bar is shown at g; a section of the top of the door at f, and the track on which it slides at h.
42. The general construction of all elevator enclosures is pretty much the same as the examples given in the preceding figures, and further details are unnecessary. In the enclosure screen shown in Fig. 63, the architrave is of cast iron, the general outlines and form of which are designed to correspond with the adjoining trim. This architrave is decorated on the jamb side with a spool-and-spindle fillet mold, and on the outer edge with an egg-and-dart echinus molding. The dado panel is of sheet iron surrounded with a tooth molding, and the center decorated with a wreath of myrtle leaves, berries, and ribbon in wrought or cast iron. The grille of the door is much closer than the transom grille, thus giving a heavier and close effect in the proper place. Both these grilles are formed of 1/16"x3/8" strap iron set with the edge to the front, the very open portions being relieved by twisting the bars so as to produce a spiral, showing the full width of the bar to the front.
43. In Fig. 64 the whole screen is formed of wrought iron, except the transom bar. This design presents several most agreeable and pleasing features; it is well balanced, and the transition, which should always be studied in design, from the heavy effect in the dado to the light area in the transom, is here well defined. The dado is especially good, as it combines protection, good design, and cheapness. The pattern, which is a diaper, is made of the usual basket strap work with the edges cut to the form shown. The rail is not too heavy, and shows a molding with a rosette-and-leaf decoration. The filling of the panel is of a series of bars well braced and bound together with three rows of rings. The transom bar - the only piece of cast iron - is finished at the ends with fluted and molded collar bands, through which the columns supporting the screen pass. The transom grille border is a repetition of the door grille, and the center is composed of six very open panels, separated by small button washers, thus completing the screen.