Builder's hardware; a manual for architects, builders and house furnishers . -friction Strike. Hall. 180 BUILDERS HARDWARE. Chapter XL. Right and LeftHand Locks, plate necessitated by it cuts the door a great deal, and manypersons clo not like it on that account. The custom in regard to latches varies in New York andBoston. In New York the outside knob is generally fixedfirmly so as not to move at all, while in Boston the knobsare arranged with a swivel spindle permitting either to beturned without acting upon the other, and the mechanism in-side of the lock is so devised that by pushing a but
Builder's hardware; a manual for architects, builders and house furnishers . -friction Strike. Hall. 180 BUILDERS HARDWARE. Chapter XL. Right and LeftHand Locks, plate necessitated by it cuts the door a great deal, and manypersons clo not like it on that account. The custom in regard to latches varies in New York andBoston. In New York the outside knob is generally fixedfirmly so as not to move at all, while in Boston the knobsare arranged with a swivel spindle permitting either to beturned without acting upon the other, and the mechanism in-side of the lock is so devised that by pushing a button or aslide the outer knob can be held fast. In cheaper forms offront-door locks, the knob-spindle is made without a swivel,and security is obtained by a bolt on the inside. Locks are designated as being either right or left hand,though the distinction is one which is confined entirely to thelatch. A left-hand lock belongs to a door fitted with left-band hinges, as has been previously explained, the term rightor left being decided by whether the door turns on the hinges. Fig. 290. Right and Left Hand Locks. when opening either in the direction of the hands of a clock orthe reverse. Locks are also designated as being either leftor right hand reverse bevel, the reverse bevel applying to adoor which swings out instead of swinging in. That is to say,in the case of a front door, for instance, if it swings out thenio-ht-lateh would be on the outside, but the latch-bolt would LOCKS. 181 be just the reverse in arrangement from what it would be,relatively, on an ordinary front door swinging in. Figure 290, will fix this distinction clearly in mind. Thefigure is taken from the catalogue of the Yale & Towne Manu-facturing Company. It is believed that the distinction betweenright and left, and reverse bevels is seldom appreciated byarchitects. It is very often desirable to have a latch which can be re-versed so that if any mistake is made in ordering, the lock willnot be useless. Reversi
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