IMPROVEMENT OF TURN BUCKLES
Year: 1887

page_text: Date of Application, 7th Feb., 1887
Complete Left, 7th Nov., 1887
Complete Accepted, 16th Dec., 1887
1, WILLIAM CUNNINGTON of 61 Bedford Road Clapham in the county of Surrey
Shop-fitter and air-tight case maker do hereby declare the nature of my invention
for THE IMPROVEMENT OF TURN BUCKLES to be as follows:-
The application of a perforated or slotted locking plate substantially as shewn in
the annexed drawings in order to fix the screw nut which secures the inner portion
to the handle or knob by which the buckle is turned, and thereby to prevent the
said nut from becoming unscrewed.
Figure I represents inner or back elevation of one of the eccentric turn-buckles
in general use for fastening cabinets, air-tight cases and other doors and sashes.
Figures II and III represent two forms of the locking plate,-the subject of this
invention.
Figure IV shows the locking plate (Figure III) as attached to the turn-buckle by
the screw (a) thereby preventing the hexagon nut from becoming unscrewed.
Figure Vis side elevation of inner portion of turn buckle with locking plate
attached.
The locking plate may be varied as regards shape, thickness and material but by
preference it is made of sheet metal of the shape indicated in Figures II or III and
of the thickness shewn in Figure V.
The plate shewn in Figure II, will secure a hexagon nut at every twelfth part of a
turn, but the simpler form (Figure III) securing such a nut at every sixth part of a
turn will generally be found sufficient.
The locking plate may be used as a spanner for adjusting the nut as well as for
fixing it when in position, and it may be made to fit nuts of any shape or size.
Dated this 7th day of February 1887.

page_text: COMPLETE SPECIFICATION.
The Improvement of Turn-buckles.
WILLIAM CUNNINGTON of 61 Bedford Road Clapham in the county of Surrey
Shop fitter do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
My invention consists in the application of a perforated or slotted locking plate
substantially as shewn in the annexed drawings left with the provisional specification
in order to fix the screw nut which secures the inner portion to the handle or knob
by which the buckle is turned, and thereby to prevent the said nut from becoming
unscrewed.
Fig. I represents inner or back elevation of one of the eccentric turn buckles in
general use for fastening cabinets, air-tight cases and other doors and sashes.
Figs. II and III represent two forms of the locking plate-the subject of this
invention.
Fig. 1V shows the locking plate (Fig. III) as attached to the turn-buckle by the
screw (a) thereby preventing the hexagon nut from becoming unscrewed.
Fig. V is side elevation of inner portion of turn-buckle with locking plate attached.
The locking plate may be varied as regards shape, thickness, and material but by
preference it is made of sheet metal of the shape indicated in Figs. II or III and of
the thickness shewn in Fig. V.
The plate shewn in Fig. II will secure a hexagon nut at every twelfth part of a
turn, but the simpler form (Fig. III) securing such a nut at every sixth part of a turn
will generally be found sufficient.
The locking plate may be used as a spanner for adjusting the nut as well as for
fixing it when in position and it may be made to fit nuts of any shape or size.
Having now particularly described and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is -
The use of a locking plate substantially as described thus securing the following
.advantages:-
1 It absolutely prevents the nut from becoming unfastened.
2 It can be used as a spanner for regulating or adjusting the nut.
3 It can be used to fix nuts of any shape or size.
4 It can be attached or removed by means of an ordinary screw driver or knife
without the use of a forked driver or other special appliance.
5 Great simplicity and cheapness of construction.
Dated this 7th day of November 1887.
WILLIAM CUNNINGTON.