IMPROVEMENTS IN FASTENINGS FOR DOORS AND WINDOWS AND OTHER OnITY AD Annun PROVISIONAL SPATION
Year: 1883

page_text: LETTERS PATENT to Henry Hancock of Southampton Buildings Holborn
London for an Invention of "IMPROVEMENTS IN FASTENINGS FOR DOORS AND
WINDOWS AND OTHER
OnITY AD Annun
PROVISIONAL SPECIFICATION left by the said Henry Hancock at the Office
.
of the Commissioners of Patents on the 26th November 1883.
$6
IMPROVEMENTS
HENRY HANCOCK of Southampton Buildings Holborn London
IN FASTENINGS FOR DOORS AND WINDOWS AND OTHER SIMILAR OPENINGS
"
This Invention has for its object improvements in fastenings for street and other
doors and windows and other similar openings and is as follows:-I make the
spindle of the centre knob revolving and of sufficient length to allow of a second
knob being affixed thereto on the inside so that the mechanism may be actuated
either from the interior or exterior and I place around the edge of the door any
convenient number of bolts which are connected by chains or their equivalents
attached to a disc affixed to the centre spindle on the inside so as to allow of such
bolts being thrown forward or backward by turning the inside or outside door
handle and causing the spindle to revolve
One of such bolts (hereafter called the main bolt) is placed' in a horizontal line_
with the lock of the door and is furnished with a slotted plate affixed to or cast on
the end thereof-A stud takes into the slot in such plate and thus holds it in
position such slot being of sufficient length and width to allow the plate to move
freely to and fro when the bolt is thrown forward or backward-When the bolt is
thrown forward the plate projects over the keyhole and so prevents the lock being
tampered-with and in order to prevent the plate being forced back a suitable spring
is fitted either just above or below the door spindle or if preferred springs may be
placed, both above and below such spindle the action of which spring or springs is
regulated as follows:-A small cog wheel is mounted on the spindle of the door on
the inside above or below the disc before mentioned while suitable arms or
projections are formed upon such spindle which arms or projections actuate the
before mentioned spring or springs and either cause them to gear into or release
[Price 6d1

page_text: them from the teeth of the cog wheel By inserting a suitable regulating key into
an aperture formed in the door just behind the door handle and by turning this
key slightly to the right or left as desired such arms or projections together with
the cog wheel and springs are brought into action and so either cause the slotted
plate to be held fast over the keyhole or to recede therefrom-The aperture
through which the regulating key is inserted is perforated through the entire
thickness of the door so that such key may be applied from the outside when
desired and is concealed from observation by a suitable sliding plate fitted over
the same on the outer side-It will thus be seen that in order to prevent the lock
being picked it is only necessary to turn the centre knob either from the inside or
outside and so cause the slotted plate to be thrown across the keyhole of the lock
and when it is desired to secure the door for the night or otherwise by inserting
the regulating key before mentioned such plate may be firmly secured over such
keyhole so as to resist all attempts to force the same back
In adapting my improved door fastening to strong room doors and other similar
places where great security is required the springs may be multiplied and each
spring actuated and governed by an independent key of a different formation
My improved fastening may also be adapted to windows provided with hinged
shutters
I would also remark that it may be readily adapted to existing locks and that in
order to simplify the arrangement for ordinary purposes the supplementary bolts
and chains first mentioned as being placed round the edge of the door may be
dispensed with and only the main bolt and chain retained

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Hancock in the Patent Office on the 26th May 1884.
HENRY HANCOCK of Southampton Buildings Holborn, London IMPROVEMENTS
IN FASTENINGS FOR DOORS AND WINDOWS AND OTHER SIMILAR OPENINGS
This Invention has for its object improvements in fastenings for street and other
doors and windows and other similar openings and is as follows
**I.make the spindle a of the centre knob of the door revolving and of sufficient
length to allow of a second knob a¹ being affixed thereto on the inside of the door
so that the mechanism may be actuated either from the interior or exterior-and I
place around the edge of the door any convenient number of bolts b which are
connected by chains or rods or their equivalents c furnished with racks d and
attached to a disc or its equivalent affixed to the centre spindle on the inside so as
to allow of such bolts being thrown forwards or backwards by turning the inside
or outside door handle and causing the spindle to revolve
One of such bolts-hereafter called the main bolt-is placed in a horizontal line
with the lock of the door, and furnished with a slotted plate e which is affixed to,
or cast on the end thereof-A stud f takes into the slot in such plate and thus
holds it in position, such slot being of sufficient length and width to allow the plate
to move freely to and fro when the bolt is thrown forwards or backwards-When
thrown forwards such plate covers the keyhole and so prevents the lock being
tampered with and in order to prevent the plate being forced back a suitable
spring g is fitted either just above or below the door spindle-or, if preferred,
springs may be placed both above and below such spindle. The action of these
springs is regulated as follows-A small cog wheel h is mounted on the spindle of
the door on the inside above or below the disc or its equivalent before mentioned
while suitable arms or proje tions i are formed upon such spindle which arms or
projections actuate the before mentioned spring or springs and either cause. them to
gear into or release them from the teeth of the cog wheel-By inserting a suitable
regulating key jinto an aperture formed in the door, just behind the door handle
and by turning it either to the right or left as desired such arms or projections
together with the cog wheel and springs are brought into action and so either
cause the slotted plate to be held fast over the key hole or to recede therefrom
The aperture through which the regulating key is inserted is perforated through
the entire thickness of the door so that such key may be applied from the outside
when desired and in order to conceal such aperture from observation I fit a suitable
sliding plate over the same on the outside
In order to prevent the lock being picked it is only necessary to turn the centre
knob either from the inside or outside and so cause the slotted plate to be thrown
across the keyhole and when it is desired to secure the door for the night or
otherwise by inserting the regulating key such plate may be firmly secured over
the keyhole so as to resist all attempts to force the same back
In adapting my improved door fastening to strong room doors and other similar
places where great security is required the springs may be multiplied and each
spring actuated and governed by an independent key of a different formation
My improved fastening may also be adapted to windows provided with hinged
hutters
I would also remark that it may be readily adapted to existing locks and that in
order to simplify the arrangement for ordinary purposes the supplementary bolts
nd chains first mentioned as being placed round the edge of the door may be
lispensed with and only the main bolt and chain retained

page_text: Fig 1. of the accompanying drawings shews a back elevation and Fig. 2 a front
elevation of a door fitted with my improved mechanism
Fig 3 shews the sliding plate f-the main bolt b with its rod c and rack d
Fig 4 shews the spring g on plate
Fig: 5 shews the projections i on spindle
Fig: 6 shews the key j
Fig: 7 shews the cog wheel h mounted on spindle
Figs 8-9 shew detail views of the rods c and racks d
Having thus described the nature of my said invention and the manner of
carrying the same into effect I claim as novel and of my invention the improved
mechanism for fastening doors and windows arranged and fitted substantially in
the manner herein before described and shewn
In witness whereof I the said Henry Hancock have hereunto set my hand and
seal this twenty sixth-day of May in the Year of Our Lord One thousand eight
hundred and eighty four
HENRY HANCOCK (L.B.)