Improvements in and connected with Brooch Pin Joints.
Year: 1893

page_text: Date of Application, 5th July, 1893
Complete Specification Left. 5th Apr., 1894-Accepted, 12th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in and connected with Brooch Pin Joints.
I, JOHN GROVE, of No. 47, Great Hampton Street, in the City of Birmingham,
Stamper and Piercer, do hereby declare the nature of this invention to be as
follows:-
This invention consists of the herein described improvements in and connected
with the hinge joints of brooch pins. By my said invention the cost of manu-
facture of the combined brooch pin and joint is considerably reduced as the brooch
pin joint is so constructed that the use of the joint pin is dispensed with thus
saving time in making the joint and moreover an ordinary toilet pin can be used for
the brooch pin and when this pin is broken it can by any inexperienced person be
removed and replaced by a new pin.
In carrying out my invention the brooch pin has a spherical or other knob at
that end which has to be jointed to the joint. Thus an ordinary toilet pin will
answer the purpose but the head should be as near spherical as possible to prevent
side play of the pin in the joint.
In order to make the brooch pin joint I take an elongated sheet metal blank
which may be long enough to turn up at one end to form the brooch pin catch, or
the blank may be only long enough to form the joint and its base. This blank is
pierced with an oval hole disposed longitudinally in the blank a short distance
from that end which is to be jointed to the pin. This hole is of the same
width as the diameter of the pin and is somewhere about twice as long as it is
wide. At or near each end of the said hole I form a depression of a size to
partly admit the head of the brooch pin. The blank is then folded upon itself
across the said hole the headed brooch pin having first been inserted in the hole
so that the two depressions will now be brought together and enclose the head
of the pin between them thus forming a kind of ball and socket joint except
that the sides of the hole prevent the pin moving sideways. This joint part of
the blank is turned up at about right angles to the body of the blank which
latter forms the base for fixing to the back of the brooch. The said slotted
hole in the blank is made of such a length that when the pin is turned down
into position for springing in the catch the pin will come in contact with that
end of the hole and bear against the same which thus gives the necessary
elasticity to the pin and causes it to spring up into the catch. When it is
desired to remove the pin from the joint it is only necessary to open apart the two
parts of the blank in which the depressions are formed which can readily be done
by a knife when the pin can be pushed back head first out of the slot and then
when a new pin has been inserted therein the parts of the blank in which are the
depressions are again closed together embracing the pin head between them and
forming the joint as before.
Dated this 4th day of July 1803.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.

page_text: COMPLETE
SPECIFICATION.
Improvements in and connected with Brooch Pin Joints.
I, JOHN GROVE, of No. 47, Great Hampton Street, in the City of Birmingham,
Stamper and Piercer, 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 :-
This invention consists of the herein described improvements in and connected
with the hinge joints of brooch pins. By my said invention the cost of manufacture
of the combined brooch pin and joint is considerably reduced as the brooch pin
oint is so constructed that the use of the joint pin is dispensed with thus saving
time in making the joint and moreover an ordinary toilet pin can be used for the
brooch pin and when this pin is broken it can by any inexperienced person be
removed and replaced by a new pin.
I will describe my invention by referring to the accompanying drawings on
which
Fig. 1 is a plan and side view of a sheet metal blank for forming a brooch pin
joint according to this invention this blank forming also the catch for the pin;
Fig. 2 shews the same blank when advanced one stage towards the formation of
the brooch pin joint and catch;
Fig. 3 is a plan, Fig. 4 is a side view and Fig. 5 is a cross sectional view of the
said joint and catch ready for the insertion of the brooch pin;
Fig. 6 shews the brooch pin separately;
Fig. 7 is a plan, Fig. 8 a side elevation and Fig. 9 a sectional elevation of the
brooch pin and joint complete.
The same letters of reference indicate the same parts in all the figures of the
drawing.
In carrying out my invention the brooch pin A has a spherical or other knob a¹
at that end which has to be jointed to the joint. Thus an ordinary toilet pin will
answer the purpose but the head a' should be as near spherical as possible to
prevent side play of the pin in the joint.
In order to make the brooch pin joint I take an elongated sheet metal blank B
such for instance as shewn by Fig. 1, which may be long enough to turn up at one
end to form the brooch pin catch, this end being formed as a hook as shewn to
engage with the brooch pin; or the blank B may as shewn for instance by the
dotted lines c in Fig. 1 be only long enough to form the joint and its base. This
blank B is pierced with an oval hole d (see Fig. 2) disposed longitudinally in the
blank a short distance from that end 62 of the blank which is to be jointed to the
pin A. This hole d is of the same width as the diameter of the pin A and is
somewhere about twice as long as it is wide. At or near each end of the hole d I
form a depression which depressions are marked e¹ e² each being of a size to partly
admit the head a' of the brooch pin A. This will be clearly understood by an
examination of Fig. 2. The blank B is, as shewn in Figs. 3, 4 and 5, folded upon
itself across the hole d, the portion of the blank in which the depressions el e² are
being also turned up at about right angles to the body of the blank (see Fig. 4)
which latter forms the base 63 for fixing to the back of the brooch. When the
headed brooch pin A has been inserted in the hole d in the direction indicated by
the arrow in Fig. 4 as far as the head a¹ will allow, the head a¹ will be in the
depressions ele which are then closed together as shewn in Figs. 7, 8 and 9 thus
forming with the head a' a kind of ball and socket joint except that the longer
sides of the hole d prevent the pin A moving sideways. This slotted hole dis
made of such a length that when the pin A is turned down into position for
springing into the catch part b¹ the pin A will as shewn in Fig. 9 come into
contact with the end of the hole d and bear against the same which thus gives
the necessary elasticity to the pin A and causes it to spring up into the catch 6¹.

page_text: When it is desired to remove the pin A from the joint it is only necessary to
open apart the two parts 62 4 of the joint in which the depressions e¹ e² are which
can readily be done by inserting a knife between them and opening them apart so
that the pin A can be pushed back head first out of the slot d and then when a new
pin similar to that marked A has been inserted in the slot d the parts b²
blank are again closed together embracing the pin head a' between them and
forming a joint as hereinbefore described and shewn by Figs. 7, 8 and 9.
of the
I wish it to be understood that I do not make any exclusive claim to the headed
brooch pin except in combination with my improved brooch pin joint hereinbefore
described.
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 :-
1. In combination with an ordinary toilet pin or other round headed pin the
employment of the improved brooch joint constructed applied and connected to such
pin in the manner substantially as hereinbefore described and illustrated by the
accompanying drawing.
2. Making a brooch pin joint for round headed pins from a sheet metal blank
pierced for the pin to pass through and raised and bent to enclose the head of the
pin so as to be connected thereto in the manner substantially as hereinbefore
described and illustrated by the accompanying drawing.
3. In combination with an ordinary toilet pin or other round headed pin the
employment of the herein described improved brooch joint and catch the said joint
being constructed applied and connected to such pin in the manner substantially as
herein before described and illustrated by the accompanying drawing.
Dated this 4th day of April 1894.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.