Improved Fastener for Windows, Doors and the like.

... 24,959. Hallsworth, J. Oct. 27. Sliding bolts. - A sliding-bolt fastening for windows, doors, &c., shown as a sash fastening, comprises a bolt a having a stem a<1> and thumbpiece a<2> slidably mounted in a tube d< >in one sash b and engaging a tube d<3> in the other sash b<1>. The bolt is provided with a spring c and projections a<3>, a<4>, which are adapted to pass through slots in a plate d<1> or to engage this latter and lock the bolt in the shot or withdrawn position on rotation of the thumbpiece a. Reference has been directed by the Comptroller to Specifications -840/98 and 11,043/03.