IMPROVED SLIDING FLUSH BOLT
Year: 1884

page_text: I CHARLES FREDERICK HALL (Storekeeper) of 14 Vicar's Rd. Kentish Town N.W.
in the Parish of St. Pancras in the County of Middlesex do hereby declare the
nature of my Invention for AN IMPROVED SLIDING FLUSH BOLT to be as
follows:-
On the ordinary flush bolt instead of the usual sunken finger-hold I have hung
a piece of metal which on being touched at one end throws the other into the
grasp of the fingers and forins an easy handle for raising or lowering the rod of the
bolt I have also placed a barrier so that this handle can be stopped half-way if
required.
Dated this 1st day of January 1884
I CHARLES FREDERICK HALL (Storekeeper) Formerly of 14 Vicars Rd. Kentish
Town N.W. But now of 32 Crogsland Rd. Chalk Farm N.W. in the Parish of
St. Pancras in the county of Middlesex do hereby declare the nature of my
Invention for AN IMPROVED SLIDING FLUSH 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 has for its object an improvement on the ordinary flush bolt used
on cabinet doors window blinds sashes etc.
Instead of the usual small finger-hold sunken beneath the surface which is
always very difficult to grasp and which frequently tears and breaks the finger-
nails I have hung a piece of metal (of the drawings attached to my provisional
[Price 4dr

page_text: specification Figs. 2 & 3) which on being pressed at one end causes the other to fly
into the grasp of the finger and thumb and form a convenient holding-piece or
handle by which the rod of the bolt can be easily and comfortably raised and
lowered and I submit is a great improvement on the vexatious old-fashioned
sunken finger-piece. Immediately the holding-piece is let go by the fingers it falls
flush with the surface of the bolt as shown at Fig. I.
On Figs. 4 and 5 the letter "A" is marked to indicate a barrier by which the
finger-hold can if required be maintained at right angles with the surface of the
bolt and not be allowed to fall flush until the doors on which, the bolt is used are
properly fastened. Thus obviating the serious accidents that sometimes occur
when a pair of doors are not firmly bolted.
This barrier is also introduced to prevent the rod of the bolt from slipping or
being pressed down.
Fig. 4 represents a longitudinal section of the bolt and Fig. 5 a general view of
the same.
I do not confine myself to any dimension or proportion or shape or design shown
on drawing herewith or to any material in which they (i.e., the bolts) may be
produced The bolts are to be made in pairs That is to say the finger-hold of
one bolt will be suspended so that it will fall flush when the bolt is fastened on
the. top of a door etc. This to be called a top bolt. And in the other case the
finger-hold will be suspended in the opposite direction so that it will fall flush
when the bolt is fixed on the bottom of a door etc. This to be called a bottom bolt.
The two bolts thus arranged to be called a pair.
The bolts can also when required be made with a reversible finger-hold so that
one bolt will serve the purpose both of a top and bottom bolt. This to be effected
by allowing a sufficient length in the slot of the bolt so that the finger-hold can
be turned end for end at discretion and then by reversing the centrage the finger-
hold can be made to fall flush in any position.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what I
claim is :-
1. The application to an ordinary flush bolt or similar apparatus the principle
of a finger-hold balanced on a centerage by which the bolting rod can be conveniently
raised and lowered.
2ndly. The employment of a barrier to maintain this finger-hold square with the
surface of bolt. and also to prevent the rod from slipping or being pushed down.
3rd. To make the bolts in pairs and the finger-hold reversible so that it can fall
flush in any position.
Dated this 20th day of January 1884