Improvements in Sash Fasteners.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in Sash Fasteners.
I ALEXANDER MELVILLE CLARK, of the firm of A. M. & Win. Clark, of
53 Chancery Lane in the County of Middlesex, Fellow of the Chartered Institute
of Patent Agents, do hereby declare the nature of this invention (a communi-
cation to me by Joseph De Mars, of Albuquerque, Bernalillo County, Territory
of New Mexico, United States of America, Inventor) and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement:-
This invention is an improved sash fastener designed for locking either the lower
sash only or both the upper and lower sashes either in the closed or in any desired
open position, and the invention consists in certain novel constructions and
combinations of parts as will be hereinafter described and pointed out in the
claims.
Reference is to be had to the accompanying drawings, forming part of this
Specification, in which Figure 1 is a face view of a part of a window provided
Figure 3
with the improvements and Figure 2 is a horizontal section of the same.
is a longitudinal, and Figure 4 is a transverse, section of the sash-fastener separately.
Figure 5 shews the several parts thereof in detail.
A is the casing of the fastener preferably formed of a top part or shell B open
at the bottom and provided with notches or guides C in its sides and notches D in
its ends and of a plate E fitted to the open bottom of the shell and secured thereto
by screws or in other suitable manner. This bottom plate is provided with short
lugs C and D which close the lower ends of the notches CD respectively and
also serve to keep the bolts presently described in position. These bolts being
removable with the bottom plate, permit of the easy insertion and removal of the
bolts from the casing. The shell B is arched centrally between its ends at b to
receive the bent or arched portion G of the bolt F, which arched portion fits in a
guide-way in the shell B so as to prevent the bolt from turning, in the
longitudinal movement of the bolt through the guide notches D in its ends. The
arched portion G of the bolt F has at its rear side an almost straight wall or
surface at g against which abuts the crank arm of a crossbolt I hereinafter
described. His a spring placed on the bolt F between the bent portion G and
the end of the casing and serving to move the bolt F in opposition to the arm J of
the crossbolt I. The crossbolt I is arranged transversely of the bolt F and has a
knob handle i by which it is rotated and also moved longitudinally in one direction
in guides C, the bolt being moved in the opposite direction by a spring / confined
between the arm J and the casing. The crank arm J of bolt I operates in the
arched portion G of bolt F and acts against the bearing surface g when the cross-
bolt I is turned. The bolt I may be moved lengthwise out of engagement with the
sash it locks and be turned to retract the bolt F. It will be noticed that the
crank arm J and bearing y are so formed that the arm will engage and operate
the bolt F whether the crossbolt be shot or retracted.
In use the fastener is secured upon the meeting rail of the lower sash at the
right hand end thereof, the bolt being arranged to engage in sockets in the
window frame while the crossbolt I is arranged to engage in sockets in the upper
sash. By this construction of fastener, the lower sash may be locked either when
closed or at any desired height and the lower sash may also be locked to the upper
sash so that the two sashes may be held in any suitable position or may be entirely
closed as desired.

page_text: Having now particularly described and' ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. An improved sash fastener comprising a suitable casing or support and two
bolts supported thereby and arranged transversely of, and at right angles to, each
other one of such bolts being movable longitudinally and the other being movable
both. longitudinally and rotatively and provided with means whereby its rotary
movement may operate the first bolt, all substantially as and for the purposes set
forth.
.. 2. The improved sash fastener herein described consisting of the casing or
support, the two bolts supported thereby, independent springs for operating the
said bolts in one direction, one of, said bolts being movable longitudinally and
provided with a bearing and the other bolt being movable both longitudinally and
rotatively and having a crank-like arm arranged to engage the bearing of the first
bolt, all substantially as set forth.
3. The improved sash fastener comprising the casing or support, the bolt I'
having the arm J and movable both longitudinally and rotatively in the casing,
and the bolt F moving longitudinally in the casing and having between its ends a
recess in which the said arm operates, all substantially as and for the purposes set
forth.
4. In a sash fastener, the combination of the casing formed with a shell open at
the bottom and provided with notches C C and D D the bottom plate fitted to said
shell and having short lugs C1 C', D' D', fitted to said notches C, D, the bolt F
held in notches D and having a bearing 9 and an actuating spring and the cross-
bolt having a crank arm to engage the bearing g and a spring for actuating the
said bolt I, all substantially as set forth.
Dated this 17th day of November 1901
A. MELVILLE. CLARK,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents: