Builder's hardware; a manual for architects, builders and house furnishers . Fig. 209. & Sons. J. B. Figure 209 illustrates a veryprimitive appliance, consistingsimply of a ratchet rail, with a spring-catch on the bottomsash. Figure 210 shows a more complete form, which is mor-tised into the face of the hanging-style, the levers working into SASH-FASTENINGS. 137 holes in each sash. The sashes are fitted with other holes onthe edges, at intervals, so that they can be locked at variousheights. In the cut the section shows more clearly the working. A single spring, coiled a
Builder's hardware; a manual for architects, builders and house furnishers . Fig. 209. & Sons. J. B. Figure 209 illustrates a veryprimitive appliance, consistingsimply of a ratchet rail, with a spring-catch on the bottomsash. Figure 210 shows a more complete form, which is mor-tised into the face of the hanging-style, the levers working into SASH-FASTENINGS. 137 holes in each sash. The sashes are fitted with other holes onthe edges, at intervals, so that they can be locked at variousheights. In the cut the section shows more clearly the working. A single spring, coiled about each lever, serves to throwthem both out. Pushing up the knob on the inside bead drawsback the upper lever, releasing the upper sash. Pushing theknob down releases in the same manner the lower sash. Chapter fJa */J *°3 n Fig. 210. Timby Sash-fast. Jenkins & Timby. Figure 211 represents the Attwell sash-fast, which differsfrom the foregoing chiefly in that the levers are worked by asingle spindle, coming through the window-frame onto the faceof the finish, and so arranged that when the spindle crank isturned up, the upper lever is drawn back without moving thelower, and vice versa. There are a few forms of sash-fasts which will hold the win-dow in any position. Figure 212 is a very common form, con-sisting of an excentric cam which screws to the face of the sashand wedges against the stop-bead, holding the sash by 213 and Figure 21-4 are used chiefly for car work, theformer acting in the same manner as Figure 212, while thelatter works into slots in the jamb. The sash-fasts thus far considered include all the principal Excentric Cam-fast. 138 B UILDERS HARD IVA RE. Chapter vui. forms commonly known to the hardware trade, as well as typesof many styles which h
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