The flush sash lift, the general type of which is shown in [Fig. 78], makes a better appearance than the hook lift, and is considerably stronger, from the fact that the casing forming the grip is let into the lower rail of the sash, and the strain is taken by this, rather than by the screws. These lifts are made in either steel or bronze, and in all finishes; they can also be had ornamented to correspond with the lock trim.
For heavy sashes, such as those in public and commercial buildings, the bar sash lift illustrated in [Fig. 79] is the best. This type of lift should always be used for heavy sash. A sash lift similar to the type shown at (a) is sometimes fastened to the under side of the meeting rail of the upper sash for the purpose of lowering the sash.
Fig. 80
Fig. 81
67. Sash Sockets and Pole Hooks.—In buildings having high ceilings, where the top sash is some distance from the floor, as is likely to occur in institutions, schools, and factories, it is necessary to provide “pull-down” poles for the purpose of raising and lowering the upper sash. The hooks used on the ends of such poles, which are made of some tough wood, are as illustrated in [Fig. 80]. Unless the upper sash is furnished with metal plates that have a hole, or aperture, the pole will be used against the mullion or upper rail of the window sash and thus mar the woodwork. The plates, or metal sockets, to engage the sash and pull-down poles, are illustrated in [Fig. 81]. They may be had in all metals and finishes and in several sizes.
Fig. 82
68. Stop-Screws.—The stop-bead screws, or washers, or, as they are more commonly known, the window-stop, or bead, adjusters, types of which are illustrated in Figs. [82] and [83], are necessary hardware adjuncts to the window trim for buildings of the better class. In ordinary work, these stops are secured to the frame by nailing, but when they are fastened in this manner, the stop-beads are disfigured if it is necessary to remove them. A cheap and good way of fastening these stop-beads is to use ordinary round-headed screws. While these adjusters answer the purpose very well, they do not allow for the adjustment of the stop-bead sidewise, so as to take up any shrinkage that might occur in the sash and prevent it from rattling, as well as making it air-tight.