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Sargent Cam-Style “Teapot” Sash Locks, Pat. Dec. 27, 1887 Item # R0875
Sargent’s patented variation on the Ives-style cam sash fastener popular during the 1890s. These four examples feature a handsome combination of cast iron body and rounded bronze cap finials.
In Clarence Howard Blackall’s indispensable 1889 reference “Builder’s Hardware” he states that the cam sash fasts as “a type are quite difficult to represent by a drawing. The action of the fast is as follows: The levers are fastened to the lower sash. When the upper lever is turned the lower or locking lever is first thrown out until released from the hook on the upper sash and then drawn around and in toward the hub until both levers are on a line with the edge of the sash, the upper lever moving through 180 degrees while the lower lever is moved only 90 degrees. Though the action sounds complicated the sash fast is perfectly simple in its construction and there is nothing about it that can get out of order or even wear loose except by such excessive use as would practically never be given it in a house. There are no springs about it, consequently it has no automatic action, and in unlocking care must be taken that the locking lever is turned clear around as otherwise it will project beyond the meeting rail and catch on the sash muntins. This is really the only objection to it.”
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