Year: 1888

page_text: Date of Application, 16th May, 1888
Complete Specification Left, 7th July, 1888
Complete Specification Accepted, 10th Aug.,
1888
EDMUND ROBERT BALLER 9 Rosalie Street Birmingham Engraver do hereby
declare the nature of this invention to be as follows:-
My invention consists in constructing & arranging parts to barrel & flush bolts to
compel the use & co-operation of two hands to withdraw the same & also to prevent
the forcing back of the bolt from the outside of the door by the use of instruments
pressing against the end of the bolt or against the knob or handle of the bolt generally
used in withdrawing the same.
In the bolt & preferably at the fore end that is shot into the staple I make a
number of grooves, these grooves are made or formed at right angles with the bolt &
each forms an inclined plain & recedes in an upward direction towards the knob & thus
form a rack, see Fig. 1 barrel bolt, & Fig. 2 flush bolt on drawing herewith, the
barrel bolt having the grooves on the front & the flush bolt the grooves on the back,
the purpose of which I will hereafter describe. The bolt is fixed in the barrel in the
usual way.
I also make an extra barrel Fig. 5 which I secure to the frame of barrel bolt on the
front & to the flush bolt on the back directly over the grooved portion of bolt, A on
Figs. 3&4. On the inside of said barrel l'affix a spring Bon Figs. 3 & 4, at one
end of the spring & at right angles with the same I affix a plate or wedge C on
Figs. 3&4, the plate or wedge on flush bolts has an aperture large enough to allow
the bolt to pass through it when it is shot or withdrawn.
I will now proceed to describe the action of my invention & in what manner iho
same may be performed
The bolt may be shot with one hand & as it passes through the extra barrel the
spring B forces the plate or wedge (into each groove in turn so that the bolt is
locked & securely fixed in any one of the grooves.

page_text: To withdraw the bolt two hands are required. To operate the barrel bolt the
plate is lifted out of the groove, which forces back the spring, this is held' with one
hand while the bolt is withdrawn with the other. The first & last groove on the barrel
bolt is continued partly round' on either side so as to take the strain off the spring
when the knob of bolt is turned up or down after being shot or withdrawn.
In the front side & through the main plate or frame D Fig. 4 of flush bolts &
opposite the wedge or plate C Fig 4 I make an aperture E large enough to allow
the part of the wedge marked F to pass through.
To withdraw the bolt in this case the part of wedge marked F before mentioned is
pressed back through the aperture in plate D & held back with one hand so as to be
clear of the grooves while the bolt is being withdrawn with the other hand.
Fig. 5. represents the extra barrel.
Fig. 6. The spring & plate or wedge for barrel bolts.
Fig. 7. The spring & plate or wedge for Aush halts

page_text: EDMUND ROBERT BALLER 43 St. Mark Street Birmingham Engraver do hereby
declare the nature of this invention 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 in constructing and arranging parts to barrel and flush bolts
to compel the use and co-operation of two hands to withdraw the same, and also to
prevent the forcing back of the bolt from outside the door by the use of instruments
pressing against the end of the bolt or against the knob or handle of the bolt generally
used in withdrawing the same.
In the bolt and preferably at the end that is shot into the staple I make a number
of grooves the grooves are made or formed at right angles with the bolt and each
forms an inclined plain and recedes in an upward direction towards the knob and thus
form a rack, see Fig. 1 barrel bolt, and Fig. 2 flush bolt on drawing herewith (the
drawings referred to are those left with the provisional specification) the barrel bolt
having the grooves on the front and the flush bolt the grooves on the back the purposo
of which will hereafter describe. The bolt is fixed in the barrel in the usual
way. I also make an extra barrel Fig. 5 on drawing herewith which I secure
to the barrel bolt on the front, and to the flush bolt on the back directly over tho
grooved part of bolt, see A on Figs. 3 and 4 on drawing herewith, on the inside of
said barrel I affix a spring marked B on Figs. 3 and 4, at one end of the spring and
at right angles with the same I affix a plato or wedge marked C on Figs. 3 and 4,
the plate or wedge on flush bolts has an aperture large enough to allow the bolt to
pass through it when it is shot or withdrawn. I will now proceed to describe with
reference to the accompanying drawings the action of my invention and in what
manner the same may be performed :-The bolt may be shot with one hand and as it
passes through the extra barrel the spring B before mentioned forces the plate or
wedge C into each groove in turn so that the bolt is locked and securely fixed in any
one of the grooves.
To withdraw the bolt two hands are required, to withdraw the barrel bolt the
plate C is lifted out of the groove which forces back the spring, this is held in one.
hand while the bolt is withdrawn with the other, the first and last groove on the barrel
bolt is continued partly round on either side so as to take the strain off the spring
when the knob of the bolt is turned down after being shot or withdrawn.
In the front side and through the main plate or frame D of flush bolts and opposite
the wedge or plate C Fig. 4 before mentioned I make an aperture E Fig. 4, large
enough to allow the part of the wedge marked E to pass through. To withdraw the
bolt in this case the part of wedge F is pressed back through the aperture in plate D
and held so as to be clear of the grooves while the bolt is being withdrawn with the
other hand.

page_text: g. 5. represents the extra barrel.
"
6. The spring & plate or wedge for barrel bolts.
"1
7. The spring & plate or wedge for flush bolts.
I do not bind myself to any particular shape or configuration of the different parts
herein described neither as to which side of the bolt I cut the grooves, as I may make
the barrel bolt similar to the flush bolt herein described, by having the grooves at the
back of the bolt; a spring attached to the back of the main plate, one end of which
would be bent or turned up to work through a slot or aperture in the main plate into
the grooves at the back of the bolt. To withdraw the bolt the spring would be pressed
back by means of a stud attached thereto and passing through an aperture in the main
plate in a similar manner to the wedge marked F on flush bolt hereinbefore described.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
The construction of -bolts which cannot be withdrawn except by the use and
co-operation of two hands, by cutting grooves in the bolts attaching a spring or
spring and wedge to the main plate, extra barrel or other part, the said spring to be
acted upon by a stud or similar appliance working through the main plate to the front
of the bolt, or by the plate C hereinbefore described.