Improvements in and relating to Pivots for Reversible Casements and Window Sashes.

摘要

13,222. Hall, G. June 7. Pivot adjustments.-Casements or window sashes are pivoted about pivot bolts K which pass through plates A let into the stiles, the plates having semicircular low-angled wedge-faces C which bear against one another under the influence of springs S and hold the window in any position.