Year: 1886

page_text: We CHARLES GROOMBRIDGE of Cliftcotte, Oliver Road Leyton in the County of
Essex, Inventor, and JAMES PELLATT RICKMAN, of 17 Saint-Bride Street in the
City of London Manufacturer, do hereby declare the nature of said Invention to be
as follows:
"3
Our Invention relates to an improved door chain or fastening for doors which
is so constructed and arranged that the act of "putting up the chain shall
operate a bolt or tongue, as hereinafter described and thereby securely fasten the
door.
For the purpose of our invention we employ, in combination with the ordinary
slotted casing, a second but shorter slotted casing or box which we affix to the
door jamb, and in this second slotted casing or box, works a bolt or tongue,
connected to one end of the chain in any suitable manner. The other or free end
of the chain is provided with the usual stud or button. This chain is of a
determined length in order that, on the "putting up or drawing over of the same,
to insert the stud or button into the slotted casing, on the door, the bolt or tongue
in the second casing will be drawn or shot into a recess specially contrived for its
reception at one of the slotted casing on the door.
"

page_text: An Improved Door Chain or Fastening for Doors.
We, 'CHARLES GROOMBRIDGE, of Clifcotte, Oliver Road, Leyton, in the County of
Essex, Inventor, and JAMES PELLATT RICKMAN, of 17 Saint-Bride Street, in the City
of London, Manufacturer, do hereby declare the nature of this invention, and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement, reference being had to the accompanying
drawings, and to the letters and figures marked thereon, that is to say :-
Our Invention relates to an improved door chain, or fastening for doors, which
is so constructed and arranged that the act of "putting up" the chain, to engage
the button in the slot in the casing or box, shall operate a bolt or tongue, as herein-
after described, and thereby securely fasten the door.
For the purpose of our Invention we employ, in combination with the ordinary
slotted casing, a second but shorter slotted casing or box, which we affix to the
door jamb, and in this second slotted casing or box works a bolt, or tongue,
connected to one end of the chain, in any suitable manner. The other or free end
of the chain is provided with the usual stud or button. This chain is of a deter-
mined length, in order that, on the "putting up" or drawing over of the same, to
insert the stud or button into the slotted casing on the door, the bolt or tongue in
the second casing will be drawn or shot into a recess specially contrived for its
. reception at the outer end of the slotted casing on the door.
And in order that our Invention may be clearly understood, we proceed to
describe the same with reference to the accompanying drawings, in which Fig. 1,
is a front view of our improved door chain or fastening, shewn applied to a door,
and with the chain "put up." Fig. 2, is a similar view, with the chain "put
down." Figure 3, is a longitudinal section, taken on the line x, x of Fig. 1.
A, is the ordinary casing or box which is affixed to the door Z, and has the usual
longitudinal slot B, cut in it, but for the purpose of our invention, its outer end is
left open. Immediately opposite the slotted casing is a second but shorter slotted
casing or box C, which is affixed, by any convenient means, to the door jamb Z*.
In this second casing works a bolt or tongue D, which is connected to the chain E,
by an eye F, and this eye is secured to the bolt or tongue D, in any suitable
manner. G, is the usual stud or button attached to the free end of the chain E;
it is shewn in Fig. 1, as engaging in the slot B, of the casing A. This chain is of
such a length that its stud or button cannot be inserted into the slot B, until the
bolt or tongue D, has been shot into the opening in the outer end of the casing or
box A, but directly the bolt has been shot, by the action of "putting up" the
chain, this chain becomes of sufficient length to allow the stud or button to be
readily inserted into the slot. If desired the stud or button may be disengaged
from the slot without withdrawing the bolt or tongue, in which case the bolt or
tongue will serve as an additional fastening for the door.

page_text: Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, we declare that we
claim:-
1. A door chain, or fastening for doors, so constructed that the action of "putting
up" the chain to engage its stud or button into the usual casing or box, operates
a bolt and shoots the same into the said casing or box, substantially as herein
described.
2. The combination with the slotted casing or box of a door chain, of a second
slotted casing or box affixed to the door jamb, and provided with a bolt or tongue
arranged to be shot into the casing or box on the door, by the action of "putting
up" the chain, as herein described and as shewn in the drawings..