Quarter turn
The sash or window driver is a simple window fitting comprising a pivotable lever to the locking of windows , doors , hatches , bulkheads and covers. It is mostly made of brass or iron.
The locking surface of the fastener slides on an inclined plane of the moving part, the "string", mouldboard or friction plate , so that the pressure on it increases as the angle of rotation of the fastener increases.
Quarter turns were also used to lock the smoke chamber door on steam locomotives .
Double driver
The double scraper is used to close two window sashes at the same time. Typically for the Renaissance, it is cast or forged from round iron and has a wide center through which the double chisel is attached to the center mullion of the window with a nail or screw.
Cam with wood screw thread ,
rotatably mounted in the threaded connection
two quarter turns,
above: rotatable around a separate screw
below: with its own swivel joint
Window closed with quarter turn,
with wire bracket on the window sash as an inclined plane ("Strings")
Rustic double rub
Classic double driver
Individual evidence
- ↑ Quarter turn, window driver, Reiber, Doppelreiber, Streichdraht, spacer tube , art fittings Hummel, accessed on November 13, 2016.
- ↑ Thomas Noky, The window fitting: The development in form and in technology, In: PaX Classic symposium Windows in the architectural monument: for the monument 2000, Ivo A Piotrowicz (editor), p.56, ISBN 3931836541
Web links
literature
- Eduard Japing: The practical iron and ironware connoisseur , p. 402, ISBN 3955806162