A New or Improved Safety Pin.
Year: 1894

page_text: Date of Application, 2nd May,
ስለ
TUOT
Complete Sannifination Loft Ath Fab 1905 Accented
Oth Mar 1895
Date of Applicationly and may
Complete Specification Loft, 4th Feb, 1905.
Accepted 9th Mar
1895
A New or Improved Safety Pin.
I, JOHN JAMES BAILEY, of Hazlewood, Woodside Park, Finchley, in the
County of Middlesex, Dental Surgeon, do hereby declare the nature of this inveu-
tion to be as follows:-
My invention relates to safety pins for fastening bandages, garments and the
like and it has for its object the rendering of the same more efficient.
:
Hitherto safety pins have been constructed of wire pointed at the end of one
arm and coiled or bent in the middle so as to form a spring, the other arm being
brought round parallel with the pointed one and either bent at its end so as to form
a retaining device, hereinafter termed the shield, or else fitted with a separate
shield of stamped metal or the like. In the said known form both the shield arm
and the pointed arm are straight or nearly so and parallel or nearly parallel when
closed.
The said known form of safety pin presents several drawbacks. It is practically
impossible to use it with one hand. If it is employed in fastening say a surgical
bandage arranged in several layers, these layers have to be gathered up in puckers
in order that the point of the pin may transfix then all and emerge therefrom so as
to be grasped in the shield. If the bandage be tight the layers have a tendency to
straighten themselves and in doing so strain the pointed arm and withdraw it from
the shield.
My invention is designed to overcome all these drawbacks.
In carrying it into effect instead of having the two arms straight or nearly so, I
make them curved, the pointed arm being flat in the plane of the safety pin but in
the plane at right angles thereto bent into a bold outwardly convex curve. The
shield arm is also curved in the same plane as the pointed arm but not so boldly as
the pointed arm and its curve is outwardly concave. I sometimes flatten the wire
of one or both arins in the plane of the safety pin so as to render the arms more
rigid in the direction of the said plane.
A safety pin constructed according to my invention may be manipulated with one
hand, and it does not pucker the bandage or garment which it transfixes, or require
disarrangement of the same during insertion or withdrawal therefrom.
Dated thin and Joy of M... 1001
1, JOHN JAMES BAILEY, of Hazlewood, Woodside Park, Finchley, in the
County of Middlesex, Dental Surgeon, do hereby declare the nature of this inven-
40 tion, and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
My invention relates to safety pins for fastening bandages, garments and the
like and it has for its object the rendering of the same more efficient.

page_text: Hitherto safety pins have been constructed of wire pointed at the end of one
arm and coiled or bent in the middle so as to form a spring, the other arm being
brought round parallel with the pointed one and either bent at its end so as to form
a retaining device, hereinafter termed the shield, or else fitted with a separate
shield of stamped metal or the like. In the said known form both the shield arm
and the pointed arm are straight or nearly so and parallel or nearly parallel when
closed.
The said known form of safety pin presents several drawbacks. It is practically
impossible to use it with one hand. If it is employed in fastening say a surgical
bandage arranged in several layers, these layers have to be gathered up in puckers
in order that the point of the pin may transfix them all and emerge therefrom so as
to be grasped in the shield. If the bandage be tight the layers have a tendency to
straighten themselves and in doing so strain the pointed arm and frequently
withdraw it from the shield.
My invention is designed to overcome these drawbacks and it is illustrated in
the accompanying sheet of drawings, in which :-
Figure 1 is view of an ordinary well known form of safety pin shown open.
Figure 2 is a view of the same known form shown closed and in position with its
pointed arm transfixing four plies of a fabric.
Figure 3 is a side elevation of one form of my new or improved safety pin.
Figure 4 is a side elevation of the form of pin shown in Figure 3 in position as
used and transfixing four plies of.fabric.
Figure 5 is a side elevation of a modified form of my new or improved
safety pin.
Figure 6 is a cross section on an enlarged scale of the form of pointed arm shown
in Figure 3.
Figure 7, also on an enlarged scale, is a cross section of the flattened pointed arm
shown in Figure 5.
In the several figures similar letters of reference apply to similar or equivalent
parts, a representing the pointed arm, the shield arm, c the spring hinge and d the
shield.
In carrying my invention into effect, instead of having the two arms straight, or
nearly so, as in the known form of safety pin shown in Figures 1 and 2, I make
them curved as is shown in Figures 3, 4 and 5. I make the pointed arm flat in
the plane of the safety pin, and bend it into a bold outwardly convex curve the
said curve being preferably a true arc of a circle. I may also make the shield arm
curved in the same plane as the pointed arm, but preferably with a curve less bold
than that of the pointed arm or in other words one of larger radius. The curve of
the shield arm also differs from that of the pointed arm in that it is outwardly
concave instead of outwardly convex as in the case of the pointed arm. The said
curved arms are clearly shown in Figures 3, 4 and 5.
I sometimes flatten the wire of one or both arms in the plane of the safety pin so
as to render the arms more rigid in the direction of the said plane. This is
generally advantageous when the pin is made of softish metal such as brass. This
modification of my invention is shown in Figure 5.
A safety pin constructed according to my invention may be manipulated with one
hand, whereas the ordinary form of safety pin requires the use of two hands in
order to be properly and neatly applied. Another advantage of my form of safety
pin is that it does not pucker the bandage or garment which it transfixes, or
necessitate disarrangement of the same during insertion or withdrawal. This will
be seen by a comparison of Figures 2 and 4. In the case illustrated in Figure 2 in
which the ordinary safety pin is used, it will be seen that the fabric has to be
gathered up in a bulge and that it remains bulged, a serious matter frequently in
the case of a surgical bandage, or in a garment. In the case illustrated in Figure 4,
where my safety pin is used, it will be seen that there is no bulge or pucker, and
that the fabric is not disturbed by passing the pin into the same, as the pointed arm
passes through the fabric in a curved path corresponding with the curve of the

page_text: pointed arm. This advantage is especially noticeable in the case of surgical
bandages.
In some cases I use a pointed arm curved as herein before mentioned in combiu-
ation with a shield arm of the ordinary well known form.
My invention does not embrace any particular form of shield. Any convenient
form of shield may be used in my new or improved safety 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. In a safety pin the employment of a curved pointed arm substantially as
set forth.
2. In a safety pin the employment of a curved shield arm substantially as set
forth.
3. In a safety pin, a pointed arm flattened and bent into a bold outwardly
convex curve.
4. In a safety pin, a shield arm flattened and bent into an outwardly concave
curve.
5. In a safety pin, the combination of a curved pointed arm and a curved shield
arm substantially as set forth.
Dated this 2nd day of February 1895.
For the Applicant,
J. G. LORRAIN, M. Inst. E.E., M. Inst. M.E.,
Norfolk House, Norfolk Street, Strand, London, W.C.,
Chartered Patent Agent.