vaccinating
Year: 1899

page_text: I, EDWARD THOMAS DARKE, of 12, Pall Mall East, London, SW., Secretary,
do hereby declare the nature of this invention to be as follows.-
An improvement of the "vaccinating needle" the form of which was legally
registered by me on the First of April 1882 No. 6520. The needle then regi-
stered has a glass head flattened and roughly ground in a plane at right angles
to the axis of the needle the point of which needle is used for the abrasion of
the skin and the flat of the glass head for rubbing the vaccine (generally
obtamed from a capillary tube) upon the abrasions. The proposed improvements
consists in forming in the flat of the head a hollow which when the plane of
the head is horizontal will contain sufficient glycerinated or liquid vaccine for
the vaccination of one person or child and to further modify the shape of the
head so as to render it convenient to receive a capsule or cover to preserve the
vaccine from the action of the air until used
From this description is should be understood that this invention takes the
form of an instrument for the abrasion of the skin and a receptacle for the
necessary vaccine combined, and as a new instrument of this form is intended
to be used for each vaccination no further apparatus is necessary for an aseptic
vaccination.
1, EDWARD THOMAS DARKE, of 12, Pall Mall East, London, S.W, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
Fig 1 of the drawing represents the vacemating needle enlarged, the design
of which was registered by me on the 1st of April 1882, No. 6520. the glass
heads the spear pointed needle and the Hat rough surface of the head.
Fig 2 shows the modification also enlarged gl is the glass head halt in section
s the spear pointed needle. is the flat rough surface which takes the form of
a ring around the hollow for contaming the vaccine. The glass head glis
made to taper about 1 in G towards the rough surface. The capsule is shown
raised a little from the glass head The walls are tapered to correspond with
[Price S17

page_text: 5
is a
the glass head. In the centre of the crown of this capsule is a little indent i
as shown, the object of which is to press the dise upon the vaccine, in the hollow
so as to expel the an from underneath and to prevent contact & adhesion of the
disc to the crown, on the removal of the capsule from the glass head
disc the diar of which is a little less than the outer dia of the rough surface
of the glass head It is shown iased a little from its intended position which
is to cover the hollow in the glass head. The capsule and the disc I make
from the government" metal sold by Messrs Betts & Co. of City Road, London
When the capsule is pressed by a flat surface into position the hollow being
charged with vaccine the complete head is dipped in melted parafin withdrawn
as quickly as possible and so hermetically sealed. The instrument is used thus.
First scratch the aim with the point on the places of insertion, then, holding
the vaccination needle glass head upwards push oft the capsule by the thumb
nail. The glass head is then applied to the arm near a place of insertion, and
by moving the head with a gentle pressure the disc is left behind, and the
vaccine should then be rubbed well in with the rough surface of the glass head.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what
I claim is―
A charged vaccination instrument in 4 parts as described on their equivalents
sufficient in itself for an aseptic vaccination substantially as described
Dated this Touth day of Novom hoi 1809