Improvements in and relating to Spiral Hair and other Pins.
Year: 1892

page_text: Date of Application, 6th Sept.. 1892-Accepted, 15th Oct., 1892
COMPLETE SPECIFICATION.
Improvements in and relating to Spiral Hair and other Pins.
I, JOHN. THOMAS LARKIN, a subject of the Queen of Great Britain, residing
at Halifax, Province of Nova Scotia, Canada, Machinist, 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 relates to certain new and useful improvements in that class of
jewelry-pins which are adapted for use as hair, brooch, hat, scarf, shawl pins, and
the like.
The invention has for its immediate object to provide a pin of the character
mentioned, which may be readily inserted, and which will securely retain its place
and will not be liable to accidental displacement; thus greatly diminishing the
danger of loss of the pin either from accident or theft.
I accomplish these objects, by the peculiar construction of the pin, and by the
novel form and arrangement of the head of the pin, all as hereinafter described,
shown in the accompanying drawings described in the following Specification, and
then specifically defined in the appended claims.
The invention is clearly shown in the accompanying drawings, which, with the
letters of reference marked thereon form a part of this Specification, and in which
drawings,
Fi
Figure 1 is a perspective view of a jewelry pin embodying my improvements.
Figure 2 is a central vertical section through the head of the pin.
Figure 3 is a detail showing a modified form of the head of the pin.
Reference now being had to the details of the drawings, by letter, A, designates
the shank or body portion of the pin, which may be constructed of wire of any
suitable or desired size. The said body portion of the pin is made of a spiral or
helical form throughout its entire length, as shown. The head, B, may be of any
desired form, and may be jeweled or otherwise ornamented, as is common in pins
of the class described.
The head, B, is provided with a central vertical opening, through which is passed
the upper end of the shank or body portion of the pin. The upper end of the
head, B, may be provided with a depression, as shown at, b, in Figure 2, of the
drawings, within which depression or recess the extreme upper end of the body
portion of the pin is headed, or, if preferred, the end of the body portion, which
extends above the pin-head, may be provided with an annular collar, which will
serve.to prevent the head from being pulled off from the body portion, and yet
will permit the head to be rotated freely thereon, while a projection, or collar, D,
upon the body portion, beneath the head serves to limit the downward movement
of the said head. It should be understood that in all cases it is necessary that
the distance between the collar or headed portion at the upper end of the body
portion of the pin, and the collar, D, should be sufficient to permit a free rotary
movement of the head of the pin.
It will be readily seen that in use, the pin may be easily and quickly inserted,
by holding the head of the pin firmly between the thumb and finger, while
imparting force to the pin in the direction in which it is to be inserted, and that,
it may be as readily withdrawn, by grasping the head firmly and imparting to the
pin an outward movement. The head being loosely sleeved upon the shank, the
rotary movement which will be imparted to the said shank or body portion, either
in inserting or removing the pin, will serve to insure the free movement of the
pin, while the spiral form will serve to securely retain the pin in place until it is
desired to remove it.
Pins constructed in accordance with my invention will be found to possess many

page_text: advantages over jewelry pins of ordinary construction, and they will be found to
be equally well adapted for any of the uses to which such pins are subjected. The
only change in the form of the pin which will be found to be necessary, in order
to adapt it to the different uses, consisting in changing the pitch of the helix of
spiral as for instance, where the pin is to be used as a hair pin the pitch of the
helix will be less than would be required if the pin were used upon a bonnet, hat
or scarf pin.
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. A pin of the character described, in which the body portion of the pin is of
a helical or spiral form, substantially as described and for the purpose set forth.
2. A hair or jewelry pin, consisting of a body portion of helical or spiral form,
and provided with a swivelled or rotatable head, substantially as described and for
the purpose specified.
Dated this 6th day of September 1892.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.