Improvements in the Construction of Fasteners to Secure Doors and Windows.
Year: 1887

page_text: Date of Application, 19th Oct., 1887
Complete Specification Left, 9th June, 1888
Complete Specification Accepted, 2nd Nov., 1888
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Fasteners to Secure Doors and
Windows.
JAMES GEORGE WATERS FAIRBAIRN Holly Cottage 80 Victoria Street Small
Heath Birmingham County of Warwick Electrical Engineer and ROBERT JONES
73 Ravenhurst Street Camp Hill Birmingham County of Warwick Patternmaker
do hereby declare the nature of this invention to be as follows:-
Our Invention relates to Improvements in the construction of Fasteners to secure
Doors and Windows quickly and firmly in their right position. One part of this
Fastener is attached to the part to which it is desired to secure the door or window or
window sash for convenience we call this the Socket Part. The other part of the Fastener
is attached to the door or window frame or window sash as the case may be for convenience
we call this the Bolt Part. The Socket Part consists of a base plate with a boss or projec-
tion in said boss or projection is a tapered or parallel hole large enough to receive the end
of the bolt of the Bolt Part. The Bolt Part consist of a bolt with suitable bearings and a
Scroll Slot Piece with suitable bearings. The bolt may be of any section and tapered
at the end nearest the Socket Part. A pin or roller is fixed in the bolt in such a
position that it will engage in the Scroll slot. The scroll slot piece is provided with a
suitable boss or pin in the centre and is carried in a bearing attached to the base or
bearings of the Bolt Part of the Fastener. The Scroll Slot Piece and the bolt may be
encased and the bolt operated by means of a loose key or a lever or knob working in
a hole or slot through the casing. To make the fastener compact the Scroll Slot Piece
may work in a slot in the centre of the bolt or the half of the bolt may be cut away
on one side to allow the scroll slot piece to come nearer to the centre of the bolt.
When the fastener is used to secure window sashes together the scroll slot piece is
provided with a projecting hook in such a position that when the scroll slot piece is
turned round on its centre the hook catches hold of a projecting piece, pin, roller or
slot in the Socket Part of the Fastener. The centre of the Scroll Slot piece and the
pin or roller attached to the bolt are in one line said line being parallel to centre line
of bolt. The centre line of the bolt is in such a position to the curves and centre of

page_text: the Scroll Slot piece that pressure on the end of the bolt cannot turn the scroll slot
piece round on its centre and the bolt cannot move untill the scroll slot piece is turned
round. The end of the bolt being tapered admits of the Fastener performing
readily with doors and windows which have droped out of their original position. In
water tight doors any number of Fasteners may be operated together by means of
connecting rods. The bolt of the Bolt Part may be provided with a weight or spring
giving the bolt a normal tendency to project towards the Socket Part. In closing the
door or window the side of the projecting end of the bolt comes in contact with the
Socket Part pressing the bolt back against the weight or spring and when the door or
window gets into its right position the weight or spring shoots the bolt into the Socket
Part. In this arrangement to enable the bolt to slide back it is necessary to have
either a straight slot at the end of the scroll slot in the scroll slot piece or a slot in the
bolt with the pin which engages in the scroll slot free to move therein, or the bolt
may be in two pieces sliding one in the other or the bolt and scroll slot piece may
slide together in a guide in the case.

page_text: COMPLETE SPECIFICATION.
Improvements in the Construction of Fasteners to Secure Doors and
Windows.
JAMES GEORGE WATERS FAIRBAIRN Electrical Engineer Holly Cottage 8) Victoria
Street Small Heath Birmingham and ROBERT JONES Patternmaker 73 Ravenhurst
Street Birmingham County of Warwick do hereby declare the nature of this inven
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
Our invention relates to improvements in the construction of fasteners to secure
doors and windows quickly and firmly in their right position. The manner in which
we carry out our invention will be readily understood on reference to the drawings
accompanying and forming part of this complete specification. Fig. 1 shews one form
of the fastener in plan and Fig. 2 the same form in section. A is the scroll slot
piece B the bolt D a case and bearing for the scroll slot piece and bolt C the socket
part with a tapered recess to take the end of the bolt B. The scroll slot piece is
carried in a bearing in the case D a handle E is fixed to the scroll slot piece outside
the casing the bolt B is half cut away on one side to admit of the scroll slot piece
coming near to the centre of the bolt, a pin is fixed in the bolt in such a position that
it will engage and work freely in the slot of the scroll slot piece. Fig. 3 shews the
end of the bolt B slotted to take the scroll slot piece, the bolt B is in two pieces
working one in another with a spring G between them. F is a pin or knob attached to
the tapered part of the bolt passing through and free to work in a slot in the case D.
The socket part C has an incline plane on the side which would come in contact with
the end of the bolt when the door or window was being closed forcing the bolt against
the spring untill the parts were in their closed position when the spring shoots the
bolt into the recess in C. The bolt is tapered on one side. E is a handle attached to
the scroll slot piece. There is a slot in the bolt B to allow of the centre pin of the
scroll slot piece to work freely therein. Fig. 4 shews two scroll slot pieces A. A. with
the bolt B reduced on each side. A pin is fixed in the bolt and projects on each side
into the slot of the Scroll slot piece. Fig. 5 shews a straight slot at one end of the
scroll slot this is to allow of the bolt being withdrawn by means of a pin or projection
attached thereto Figs. 6 & 7 the scroll slot piece is arranged to give the desired
travel of the bolt in two turns. A half turn or any number of turns may be used,
Figs. 8 & 9 three fasteners connected together by a rod H working on a pin attached
to each of the scroll slot pieces any number of fasteners may be opperated in the same
manner. E is a handle attached to the rod H Figs. 10 & 11 A. A. are the scroll
slot pieces B the bolt I. I. weights fixed to the scroll slot pieces, D the case,
J, J, pinions fixed to the centre of the scroll slot pieces N a loose key with teeth on the
outside of the same pitch as the pinions J, J. Figs. 12. 13. 14. A is the scroll slot
piece with the handle E, and recessed at one side to take the projection K part of the
socket part C or it may be provided with a spring ball as shewn on Fig. 14 at M. Lis
a stop pin passing through the side of the case D and behind the bolt B when the
fastener is closed.

page_text: Having now particularly described and ascertained the nature of our said inven-
ion and in what manner the same is to be performed we declare that what we
claim is
1. One, two, or more scroll slot pieces A opperating a bolt or bolts B to secure doors
and windows substantially as described.
2. A Scroll Slot Piece A recessed to take a projection K or made to take a spring
ball M substantially as described.
3. The combination of one or more scroll slot pieces opperating a bolt or bolts with
tapered or parallel ends into a tapered or parallel socket C substantially as described.
Dated this 6th day of June 1888.
JAMES GEORGE WATERS FAIRBAIRN.
ROBERT JONES.