AN IMPROVED STOP OR BOLT FOR PREVENTING THE FURTHER OPENING OF WINDOWS SHUTTERS SLIDING DOORS & THE LIKE WHEN PARTIALLY OPEN FOR VENTILATION.
Year: 1885

page_text: W43
Partially Open for Ventilation.
I FREDERICK ROBERT WILDEGOSE, 20 Cambridge Place Paddington, London,
Middlesex, Builder & Decorator, do hereby declare the nature of my invention for
AN IMPROVED STOP OR BOLT FOR PREVENTING THE FURTHER OPENING OF
WINDOWS SHUTTERS SLIDING DOORS & THE LIKE WHEN PARTIALLY OPEN FOR
VENTILATION. to be as follows:-
My Invention consists of a method for secureing window sashes when open for
Ventilation, and prevent the possibility of opening the sashes from the out side
further than the distance allowed for Ventilation by means of a bolt fixed in stile
of top sash which may be four inches more or less from meeting rail of bottom
sash, and which is performed by pressing the larger circle or Thumb plate which
shoots out the Bolt and projects over meeting rail of bottom sash, and renders it
impossible to move the sashes up or down further than the distance allowed for
Ventilation untill the Bolt has been pressed back.
The manner in which I carry my Invention out is described by reference being
had to accompanying drawing.
In longitudinal plate A. Fig. 1 near the upper end I form a Circular hole in
which I fit a Thumb plate B. Near the lower end of plate A, I form a hole oval or
other shape in which I fit a bolt marked C, which is attached and part of beam D,
which passes up the centre at the back of plate A, thus connecting bolt C, and
Thumb plate B, which are attached to beam D, on the back of plate A. I form
two nug's E, which forms a slot which receives Beam D, and through which pin F
passes which may be riveted, and which forms a Pivot or Axel on which beam D.
works It will now be seen that on pressing Thumb plate B. the bolt C, projects,―
wereby rendering it impossible to move the Sashes up or down further than the
distance allowed for Ventilation untill the Bolt C, has been again pressed back,
Fig. 1
on drawing shows front elevation of longitudinal Plate A, with thumb
Plate B. and Bolt C. Fig. 2 is the back elevation of plate A, showing beam D,

page_text: nug's E, and pin F. Fig. 3 being a section with bolt C, pushed in Fig. 4 being a
section with bolt C. pushed out. This bolt is also applicable to Slideing Shutters
the bolt being fixed in bottom rail of upper shutter, and for Sliding Doors &c.
The Bolt is fixed in one of the meeting stiles of Sliding Doors or Casements, the
feature in this Bolt is the greater the pressure to open the sashes &c. increases its
security.
An Improved Stop or Bolt for Preventing the Further Opening
of Windows, Shutters, Sliding Doors, and the like, when
Partially Open for Ventilation.
I FREDERICK ROBERT WILDEGOSE, of 20, Cambridge Place Paddington, London
Middlesex, Builder & Decorator do hereby declare the nature of my invention for
AN IMPROVED STOP OR BOLT, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:-
My Invention consists of a method for secureing window sashes & the like
when partially open for ventilation and prevent the possibility of opening the
sashes from the out side, further than the distance allowed for ventilation; By
means of a stop or bolt fixed in stile of top sash which may be four inches more or
less from meeting rail of bottom sash and which is performed by pressing the larger
Circle or Thumb plate which shoots out the bolt and projects over meeting rail of
Bottom sash and renders it impossible to move the sashes up or down further than
the distance allowed for ventilation untill the bolt has been pressed back; the
manner in which I carry my Invention out is described by refference being had to
Drawings accompanying my provisional Specification; In longitudinal plate A,
Fig. 1. and near the upper end I form a Circular hole, in which I fit a Thumb
plate, B. Near the lower end of plate A, I form a hole oval or other shape in
which I fit a Bolt marked C, which is attached and part of beam D, which passes
up the centre at the back of plate A, thus Connecting Bolt C, and Thumb_plate B,
which are attached to beam D, on the back of plate A, I form two nug's E, which
forms a slot, which receives Beam D, and through which pin F. passes which may
be riveted and which forms a Pivot or axel on which beam D, works. It will now
be seen that on pressing Thumb plate B, the bolt C, projects, wereby rendering it
impossible to move the sashes and the like up or down further than the distance
allowed for ventilation untill Bolt C, has been pressed back; Fig. 1. on drawing
shows front elevation of longitudinal plate A, with thumb plate B, and bolt C.
Fig. 2. is the back elevation of plate A, showing nug's E, beam D, and pin F,

page_text: Fig. 3, being a section with bolt C, pressed in, Fig. 4, being a section with the
bolt C, pushed out, a thin strikeing plate may be used with bolt, This bolt or stop
is also applicable to Slideing Shutters the bolt being fixed in bottom rail of top
shutter for slideing doors the bolt is fixed in one of the meeting stiles, and as stop
for room doors, it is fixed fush in the Floor; the feature in this bolt is-The greater
the pressure to open, the more it increases the security.
Having thus described and assertained the nature of my Invention and in
what manner the same is to be performed, I declare that what I claim is
The herein described method of secureing windows shutters, doors and the like,
by means of a Stop or Bolt substantially in the manner herein before described and
Illustrated in drawings accompanying my provisional Specification.
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