Practical sheet metal duct construction; a treatise in the construction and erection of heating and ventilating ducts by Neubecker William 1864-

Author:Neubecker, William, 1864-
Language: eng
Format: epub
Tags: Sheet-metal work
Publisher: New York, The Sheet metal publication company
Published: 1916-03-25T05:00:00+00:00

fitting into the register box or collar as shown. E : represents the valves, which can be turned in a vertical or. a horizontal position, thus opening or closing the register.

The Use of the Heat Deflectors When the heat registers are placed near the floor, a heat deflector made from galvanized iron or brass, as shown by A in Fig. 146, can be used for deflecting . the heat towards the floor. The hot air striking the upper shield A is deflected in the direction of the

Fig. 146—Heat Deflector on a Register

arrows. A hem edge is placed along the bottom of the deflector at the sides and front as shown by a and b, and it is double seamed along the curved part at c and c. At the back of the sides and top a J^-incli flange is bent as indicated by d and e, which is slipped behind the register face, so that when the screws i i

are securely fastened, the deflector will be held firmly in place.

Fastening Registers to Marble or Slate Side Walls

When the heat inlets or vent outlets connect to

marble or slate side walls, great care must be taken

to have the duct properly and accurately located, so

Fig. 147—Drilling the Marble or Slate for the Register Fig. 148—Screw Anchor for Fastening the Register to Slab

that the marble or slate work will fit accurately, as shown in Fig, 147, when the registers are sometimes fastened by means of plaster of paris, which, however, makes their removal difficult. A better plan which allows for their easy removal, is obtained by holding the register in position, marking the holes and drilling the

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marble as shown at a a, etc. The holes having been drilled in the marble or slate, the register faces are secured by means of a screw anchor and ordinary wood screws, as shown respectively by a and b in Fig. 148. The screw anchor is made of a lead composition metal in one piece, and is so constructed that the screw cuts its own thread. This^ enables it to be used with any wood, machine or other screw. As the lead anchor requires a small hole for its insertion, there is no tendency to break, chip or deface the finest marble. The lead coipposition being non-rusting, no streaks will show on the marble face. The screw can be of brass or nickel plated to suit the register face. The holes being drilled, the lead anchor is inserted flush with the surface of the marble, as shown in the sectional view at the right, after which the register is held in place and the screws passed through holes in same, into the lead anchor, and fastened tightly.

Locating Register Openings by Means of the

Water Level

The location of the vent or heat openings being given, or the location being given on one side of the room, it often becomes a question how these openings' can be located on a large job, where a great number are required, or how a

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