A NEW OR IMPROVED DETACHABLE SPRING BROOCH BACK
Year: 1874

page_text: LETTERS PATENT to Harry Barrett, of 2, Brecknock Road, Camden
Road, in the County of Middlesex, for the Invention of "A
NEW OR IMPROVED DETACHABLE SPRING BROOCH BACK,
PROVISIONAL SPECIFICATION left by the said Harry Barret at the
Office of the Commissioners of Patents, with his Petition, on the
18th March 1874.
I, HARRY BARRETT, of 2, Brecknock Road, Camden Road, in the
5 County of Middlesex, do hereby declare the nature of the said
Invention for "A NEW OR IMPROVED DETACHABLE SPRING BROOCH BACK," to
be as follows: —..
First. There is a flat slide with raised edges slightly turned over
towards each other; the said slide is made a fixture on to the back of a´
brooch or other similar ornaments.

page_text: Second. A strip of metal is made with a joint catch and pin attached
as in an ordinary brooch, but with the addition of a flat spring running
along the upper side, at the farther end of the spring a pin is so fixed
that as the strip of metal is pushed forward between the raised edges of
the fixed slide the pin springs down through two holes made in the
strip and the slide holding the two firmly together.
Third. To wear the brooch as a pendant the back must be removed,
which is done simply by putting the thumb nail under a little catch at
the end of the spring, and slightly raising it, the back will then slido
out, leaving the ornament free of incumbrance to be worn as a pendant, 1
or placed upon an armlet, which is fitted with a similar slide and
spring.
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Patent, and of an Order of the Lord Chancellor, by the said Henry
Barrett in the Great Seal Patent Office on the 25th September 1874.
r
:
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HARRY
BARRETT, of 2; Brecknock Road, Camden Road, in the County of
Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of March, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Harry Barrett, Her special licence that
I, the said Harry Barrett, my executors, administrators, and assigns, or
such others as I, the said Harry Barrett, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to
time and at. all times thereafter during the term tlicrein expressed,
should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for. "A. NEW OR. IMPROVED DETACHABLE.
SPRING BROOCH BACK," upon the condition (amongst others) that I, the
'

page_text: DUITER 8 Improved DIVVER DUON.
said Harry Barrett, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the
same to be filed in the Great Seal Patent Office on or before the
Thirtieth day of September, One thousand eight hundred and seventy-
four.
NOW KNOW YE, that I, the said Harry Barrett, 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:-
First. There is a flat slide with raised edges slightly turned over
towards each other; the said slide is made a fixture on to the back of a
brooch, or other similar ornaments.
Second. A strip of metal is made with a joint catch and pin attached
as in an ordinary brooch, but with the addition of a flat spring running
along the upper side, at the further end of the spring a pin is so fixed.
that as the strip of metal is pushed forward between the raised edges of
the fixed slide the pin springs down through two holes made in the
strip and the slide holding the two firmly together..
Third. To wear the brooch as a pendant the back must be removed,
which is done simply by putting the thumb nail under a little catch at
the end of the spring, and slightly raising it, the back will then slide
out, leaving the ornament free of incumbrance to be worn as a pendant,
or placed upon an armlet, which is fitted with a similar slide and
spring.
7
Fourth. It can be used for an ornament for the hair.
And to fully explain this my said Invention I now refer to the
accompanying Drawings, and the figures and letters of reference shown
thercon, the same letters referring to like parts.
The slide before mentioned is fixed on to the back of the brooch or:
ornament, see a, Figure 1, and is a flat piece or strip of metal with the
edges slightly turned over towards each other, so as to allow the dove-
tailed slide, Figure 2; to be pushed in or out easily between the turned-

page_text: over adges. This slide, Figure 2, on which is soldered the joint and;
pin band catch c, is also furnished with a spring d running along the
top on the under part of the spring. At the end is fixed a pin or
catch h, shown on Figures 3, 5, and 7, sloped so as to offer no obstacle in
pushing in the dovetail. When the dovetail is pushed into the slide the
pin or catch h attached to the spring d snaps down through a hole e,
Figure 3, in the dovetail slide and a corresponding hole ƒ (Figures 1
and 5) in the fixed slide, and holding the two firmly together. To
remove the dovetail from the slide the end of the spring d has to be
slightly raised by the catch g (Figures 3 and 5), and the dovetail will
readily push out, so that the detachable brooch back and the brooch
work, i.e. the pin joint and catch can be removed in a moment, leaving
the brooch or ornament unincumbered to be worn as a pendant, or
attached to a bracelet by means of the slide and dovetail, see Figures 1,
8. and 9.

page_text: herein-before in part recited Letters Patent is, the said Invention for a
new or improved detachable spring brooch back, substantially as herein
described, and as shown on the accompanying Drawings, or any mere
modification thereof.
In witness whereof, I, the said Harry Barrett, have hereunto set
my hand and seal, this Twenty-fourth day of September, in
the year of our Lord One thousand eight hundred and seventy-
four.