A NEW OR IMPROVED FASTENING FOR LOCKETS
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by George Mantle at the Office of the
Commissioners of Patents on the 26th February 1878.
GEORGE MANTLE, of Birmingham, in the County of Warwick, Jeweller. "A
NEW OR IMPROVED FASTENING FOR LOCKETS."
My said Invention consists of a new or improved fastening for lockets, the parts
of which fastening are constructed and arranged as herein-after described.
On the edge of one half of the locket, and by preference immediately opposite the
hinge by which the two parts are jointed together, and on which they open and
shut, is a spring bolt, and on the edge of the other half of the locket is a staple, the
said staple being of a size suitable for the bolt to engage in, and situated at that
part of the edge to which the spring bolt is presented when the locket is closed.
The said spring bolt is contained and slides in a tube fixed or formed on the edge
of one half of the locket. The said bolt is inclined at its end, and is surrounded by
a coiled spring which urges it into its shot position. A pin or projection on the
said bolt passes through and works in a slot in its tubular case, and by pressing
the thumb or finger nail against the said pin or projection the bolt can be with-
drawn into its case. The axis of the bolt is in a line with the edge of the side of
the locket to which it is attached. In the said side of the locket two recesses are
formed, one at one end and the other at the other end of the case of the bolt, the
said recesses being formed by cutting away portions of the edge of the locket.
the edge of the other half of the locket is the staple already referred to, and also a
projection nearly similar in size to the said staple. These two parts, namely, the
staple and the projection described, occupy and fill up when the locket is shut the
two recesses described in the edge of the bolt side of the locket.
On
Between the staple and projection a portion of the rim of the locket is cut away
for the reception of the case of the bolt. As the two halves of the locket are shut
down upon one another, and their edges pressed into contact, the case of the bolt
enters the space between the staple and the projection on the staple side of the
locket. The inclined end of the bolt coming in contact with the staple the said
bolt is pressed back into its case, and when the two halves of the locket are shut
closely down the end of the said bolt is brought opposite the hole in the staple, and
Dis 071

page_text: the said bolt is shot into the staple, and the two parts of the locket are securely
fastened together. At the same time the projection on the staple side of the locket
enters the recess in the bolt side, and prevents any strain upon the hinge by the
pressing back of the bolt. When the two halves of the locket are in this position
the parts of the fastening described are so engaged with and fitted into one another
that the outline of the locket is scarcely interfered with.
In order to open the locket it is only necessary to push back the bolt by applying
the thumb or finger nail to the pin or projection on the bolt, when the two parts
are released, and may be opened on their hinge.