Improved Means for Holding Doors Partially Open when on the Chain.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improved Means for Holding Doors Partially Open when on the
Chain.
1 JOHN HUNT of Baldwin Street, Iron Works, Derby Street, Bolton, in the
County of Lancaster, Machine Maker, do hereby declare the nature of this
invention to be as follows:-
My said invention relates to improved means for holding doors in a partially
opened position wben secured on the chain. At present when a door is partly
opened and secured by the ordinary chain, it is liable to be closed or swung to and
fro by draughts and the like.
The object of my invention is to hold it fixed in its partially opened condition,
and this I do by means of a strut hinged or otherwise movably secured to the door
post or might be to the door. When the door is placed on the chain and opened,
the said strut is hooked or otherwise connected to one of the last links of the chain
or to a staple on the door. The door is thus held at a fixed distance ajar, and any
accidental movement is absolutely prevented.
The strut might be made with holes or with an adjustable catch or other means
which would enable it to engage with different points so that the door could be
fixed at different distances ajar.
Dated this 17th day of June 1895.
EDMUND CHADWICK, F.I.C.P.A.,
Agent,
COME LEIE DI DUIFICATION.
Improved Means for Holding Doors Partially Open when on the
Chain.
I, JOHN HUNT of Baldwin Street Iron Works, Derby Street, Bolton in the
County of Lancaster, Machine Maker, do hereby declare the nature of my said
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My said invention relates to improved means for holding doors in a partially
opened position when secured on the chain. At present when a door is partly
opened and secured by the ordinary chain, it is liable to be closed or swung to and
fro by draughts and the like.
The object of my invention is to hold it fixed in its partially opened condition,
and this I do by means of a strut hinged or otherwise movably secured to the door
post or it might be to the door. When the door is placed on the chain and opened,
the said strut is hooked or otherwise connected to one of the last links of the chain
or to a staple on the door. The door is thus held at a fixed distance ajar, and any
accidental movement is absolutely prevented. The strut might be made with holes
or with an adjustable catch or other means which would enable it to engage with
different points so that the door could be fixed at different distances ajar.
Го

page_text: DESCRIPTION OF DRAWINGS.
Fig. 1 is an elevation of a door with my improvements applied-Fig. 2 a plan
of same, and Fig. 3 a side elevation of strut.
A is the door-B the jambs, and C the wall.
The object of my invention is to hold a door in a fixed or partially opened
condition which I effect by means of the strut D hinged to the door post or jamb B.
When the door A is placed on the chain E and open, the strut D is hooked into
one of the links of the chain E as shown in the drawings. The chain E is secured
to the door post or jamb B, and is provided at its outer end with the projection or
knob F constructed to slide in the slotted block G fixed on the door A. To
prevent the door A closing it is held at a fixed distance ajar by the hinged
strut D, by which any accidental movement is absolutely prevented.
The hinged strut Ď may be provided with one or more projections H as shown
in Fig. 3 to allow of the chain E being secured at varying points to regulate the
amount of opening of the door.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed declare that what I
claim is :-
In combination with swinging doors when held ajar by a chain the use of the
hinged strut D having one or more projections H for the purpose specified,
substantially as described and shown in the drawings.
Dated the 6th March 1896.
EDMUND CHADWICK, F.I.C.P.A.,
Agent.