IMPROVEMENTS IN BOLTS FOR DOORS SHUTTERS AND SIMILAR PURPOSES
Year: 1884

page_text: 1 ROBERT WHISTON of Number 7 Clifton Terrace Chapel Ash Wolverhampton
in the County of Stafford Architect do hereby declare the nature of my invention
for IMPROVEMENTS IN BOLTS FOR DOORS SHUTTERS AND SIMILAR PURPOSES to be
as follows:-
This invention makes the action of the Bolt more simple and security certain..
In using it the knob of the Bolt is pushed straight along the barrel or case in
which it is placed and in which there is formed a groove about one inch long.
When this is done a part of the Bolt rises to the surface of the aforesaid groove by
the pressure of a spring fixed to the underside of the Bolt and makes it secure and
cannot be pushed back only by a slight pressure on the knob of the Bolt When
this is done the Bolt returns to its former place and is unfastene. The accom-'
panying Drawing shews the make and action of the aforesaid Bolt.
These Bolts are made of Brass and Iron,

page_text: 1, ROBERT WHISTON, 7, Clifton Terrace, Chapel Ash, Wolverhampton, Stafford-
shire, Architect, do hereby declare the nature of my invention for "IMPROVEMENTS
IN BOLTS FOR DOORS, SHUTTERS AND SIMILAR PURPOSES" and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement:-.
مة
The object of my Invention is to provide a bolt for fastening doors, shutters and
similar purposes which shall be simple in construction and which by the simple
action of bolting shall be securely fastened.
I will describe with reference to the accompanying drawing the manner in
which my said Invention is to be performed; the same letters of reference indicate
corresponding parts in all the corresponding Figures.
Figures 1 and 2 are a plan and a side view respectively of one form of bolt made
according to my Invention; Figure 3 is a longitudinal section with the bolt shot
forward; Figure 4 is a longitudinal section of the same with the bolt withdrawn ;
Figure 5 is a cross-section of the same and Figure 6 is a modified form of the
Bame.
A is the barrel or case of sheet metal being blind at one end a¹ and open at the
other end a and having a groove d³ provided at the top near the blind end.
Within the said barrel or case I provide the metal bolt B having a knob b¹ screwed,
or in some other suitable manner fixed, to it and projecting through the groove a³..
To the side of the bolt I provide a spring C which bears against the barrel or
case A and when the bolt B is shot forward, as shewn in Figures 1, 2 and 3, it
forces a lateral projecting part 62 of the bolt B through the groove a³ or the said
projecting part 3 catches against some other projection fixed to or forming.part of
the casing, for instance as shewn in Figure 6, and thereby prevents its being with-
drawn.and securely fastens it. The bolt can be withdrawn as shewn in Figure 4
after first compressing the spring c by means of the knob bl.
I wish it to be understood that I do not limit myself to the precise details or the
shape of the bolt and casing as herein described and illustrated as modifications
may be made without departing from the nature of my Invention.
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. In a bolt for doors, shutters and similar purposes the combination of a
latéral projecting part with a spring which said lateral projecting part when the
bolt is shot forward is caused by the action of the said spring to catch against
part of the barrel or case and prevent its withdrawal as hereinbefore described
and illustrated in my drawing.
2. A bolt for doors, shutters and similar purposes constructed to operate
substantially as and for the purpose herein before described and illustrated in my
drawing.