IMPROVEMENTS IN BOLTS
Year: 1884

page_text: I, WILLIAM EDWARDS, of Queens Road, Battersea, in the county of Surrey
Agent, do hereby declare the nature of my said Invention for "IMPROVEMENTS IN
BOLTS" to be as follows:
By this invention I provide a bolt which is easily manipulated, and which affords
(when shot) perfect security against being unfastened from the outside of door to
which it is affixed.
The bolt ordinary attached in a vertical position to street and other doors, unless
turned, after being shot, so that an arm of same takes into a notch or slot in the
guide, will frequently slip down by its own weight, or may be caused to fall by a
slight vibration, thus offering no security against the door being unfastened by
housebreakers and others. This is entirely obviated in this my invention, and the
inconvenience experienced in reaching to the height required by the bolt at present
in use.is overcome, for by simply pressing a "button" at lower end of my improved
bolt, the said bolt shoots into its socket by the action of a spring, as hereinafter
described.
According to this Invention I fix on, or in the door, a hollow tube in which the
bolt travels. The bolt I form with a spindle at its lower end, to which spindlo
I attach a "knob," or "button" which works through a slot in the hollow tube
aforesaid. I fit a disc in said hollow tube a short distanco below the lower end of
bolt, through the centre of which disc the aforesaid spindle passes; and I place à
spiral spring between the lower end of bolt and the disc aforesaid, surrounding the
spindle. The lower end of spindle I form with a tooth, or catch; and to the inside
of hollow tube, at the bottom, I attach a spring clip operated by a "push" ör
"button" passing horizontally through the said hollow tubo.
"
Upon the bolt being drawn down by means of the "knob," or "button" afore-
said, the spring, above described, is compressed, and the tooth or catch at bottom
of spindle of bolt takes into, and is held by a tooth formed on the spring clip before
mentioned. To bolt the door all that is necessary is to press the "push or
"button" operating the spring clip, when the spindle of bolt is released, and the
spring at lower end of bolt forces said bolt into its socket, and holds it, there
securely.
The bolt can then only be withdrawn by the means of the "knob.” or
fitted to bolt spindle.
button *
Bolts constructed according to this Invention are especially suitable for doors of
private houses, public buildings, theatres, halls, churches and chapels, and the like.
•

page_text: I, WILLIAM EDWARDS, of Queen's Road, Battersea, in the county of Surrey,
Agent do hereby declare the nature of my invention for "IMPROVEMENTS IN
BOLTS" and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
By this invention I provide a bolt which is easily manipulated, and which affords
(when shot) perfect security against being unfastened from the outside of door to
which it is affixed.
The bolt ordinarily attached (in a vertical position) to street and other doors,
unless turned after being shot, so that an arm of same takes into a notch or slot in
the guide, will frequently slip down by its own weight, or may be caused to fall by 1
a slight vibration, thus offering no security against the door being unfastened by
housebreakers and others. This is entirely obviated in this my invention and the
inconvenienco experienced in reaching to the height required by the bolt at present
in use is overcome, for by simply pressing a button at lower end of my improved
bolt the said bolt shoots into its socket by the action of a spring as hereinafter
described.
According to this invention I fix on or in the door a hollow tube in which the
bolt travels. The bolt I form with a spindle at its lower end to which spindle
I attach a knob or button which works through a slot in the hollow tube aforesaid.
I fit a disc in said hollow tube a short distance below the lower end of bolt through
the centre of which disc the aforesaid spindle passes and I place a spiral spring
between the lower end of bolt and tho disc aforesaid surrounding the spindle. The
lower end of spindle I form with a tooth or catch and to the inside of hollow tube
at the bottom I attach a spring clip operated by a push" or "button" passing
horizontally through the said hollow tube.
Upon the bolt being drawn down by means of the "knob" or button aforesaid the
spring above described is compressed and the tooth or catch at bottom of spindle of
bolt takes into and is held by a tooth formed on the spring clip before mentioned..
To bolt the door all that is necessary is to press the "push" or "button" operating
the spring clip, when the spindle of bolt is released and the spring at lower end of
bolt forces said bolt into its socket and holds it there securely.
The bolt can then only be withdrawn by means of the “knob”
fitted to bolt spindle.
or " button
DO
Bolts constructed according to this Invention are especially suitable for doors of
private houses, public buildings, theatres, hotels, churches and chapels, and the like.
In order that my improvements may be more readily and easily understood
I have hereunto annexed a sheet of drawings on which letters of reference are
marked on corresponding parts on all the Figs. alike,

page_text: of bolt, shewing cover c for spiral spring, rod d and drop.catch e. Fig. 3 is a side
view of bolt. Fig. 4 is a side sectional view shewing spiral spring k and catch fon
rod d.
Knob a in Fig. 1 is connected to rod d through slot g in front plate, by pressing
knob a downwards, the catch f on rod d displaces drop catch e (as shewn in dotted
lines) in Fig. 2. Catch e is connected to knob b through slot h in front plate,
when rodd is pulled down the entire length of slot g, catch e falls back into its
normal position holding down rod d. by catch f, rod d is connected to bolt / at its
lower end m which forms a collar, this collar when the bolt is pulled down com-
presses in a spiral spring k, by pressing knob b to right in slot h the rod dis
released, the spiral spring k forcing by its expansion bolt upwards, and holding
same in that position, until again pulled down by knob a. The same arrangement
of spring, catch &c. can be applied to bolts now in use by doing away with lower
catch, the knob of same being pulled down and pressed to the right or left, released
again bringing knob to centre, the spiral spring in this instance, also forcing bolt up
into the recess.
Having now particularly described and ascertained the nature of my said
invention, and in what mannor the same is to be performed, what I desire to
claim is
The construction of a spring bolt for doors, gates, windows, casements and the
like, constructed in the manner as herein substantially described, set forth and
fully illustrated in the drawings annexed.
•