Builder's hardware; a manual for architects, builders and house furnishers . Fig. 195. Triumph Sash-fast. Ireland Fig. I 96. Sash-fast. P. & F. Corbin. Mfg. Co. is perfectly simple. The lever is on the lower sash, and isheld either open or shut by a smaller hinged lever which drops 130 B UILDERS HARD WARE. Chapter VIII. Locking LeverSash-iasts. by gravity into the rebates of the becl-plate. Figure 195shows a fast which operates in exactly the same manner, thesmaller, gravity lever being raised to release the main lever;and Figure 196 is a type of a number of similar forms manu-factured by P. &
Builder's hardware; a manual for architects, builders and house furnishers . Fig. 195. Triumph Sash-fast. Ireland Fig. I 96. Sash-fast. P. & F. Corbin. Mfg. Co. is perfectly simple. The lever is on the lower sash, and isheld either open or shut by a smaller hinged lever which drops 130 B UILDERS HARD WARE. Chapter VIII. Locking LeverSash-iasts. by gravity into the rebates of the becl-plate. Figure 195shows a fast which operates in exactly the same manner, thesmaller, gravity lever being raised to release the main lever;and Figure 196 is a type of a number of similar forms manu-factured by P. & F. Corbin. The lever in this example is re-leased by raising the secondary lever at the rear. IV. Locking lever sash-fasts. This class includes thosesash-fasts in which the lever locks itself when turned. Figure197 is a form which has been on the market for some time, and. Fig. 198. Paysons Sash-fast. J. B. Johnston. Fig. 197. Mathes Sash-fast. Nimick & Brittan. is now comparatively little used, though the chief objection toit is only in reference to its size. It is as near to beingabsolutely burglar-proof as any form of sash-fast which hasbeen devised. Half the axis, about which the lever is rotated,forms a part of the upper and of the lower sash portion of thefast. The figure shows the position when the sashes arelocked, the lever hooking down under both half-axles, and notonly drawing the two sashes together, but binding and holdingthem so they cannot be moved. To unlock the sash, the leveris thrown up to a vertical joosition. SASH-FA S TENINGS. 181
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