IMPROVEMENTS IN GLASS SYRINGES 13
Year: 1883

page_text: LETTERS PATENT to Edmond Charles Williams of 79, Fairfoot Road, in the
county of Middlesex, Manufacturer for an Invention of "IMPROVEMENTS IN
GLASS SYRINGES
13
PROVISIONAL SPECIFICATION left by the said Edmond Charles Williams
at the Office of the Commissioners of. Patents on the 2nd June 1883.
EDMOND CHARLES WILLIAMS, of 79 Fairfoot Road, in the county of Middlesex,
Manufacturer "IMPROVEMENTS IN GLASS SYRINGES
"
This invention relates to improvements in glass syringes whereby their action
is improved and their construction simplified and a neater appearance given to
the article.
Hitherto in the construction of glass syringes it has been the practice to provide
a cork plug in the top of the barrel or cylinder through which the piston rod
worked; this construction gives rise to several disadvantages amongst which may
be mentioned that the glass cylinder is frequently broken in forcing in the cork
plug, and the cork frequently becomes dry in hot weather and comes out of the
cylinder thereby rendering the syringe useless.
Now by my improvements these defects are obviated.
I provide a glass cylinder with the usual piston and rod but instead of the cork
plug I provide a packing box constructed of a plug of suitable material such as
vegetable ivory, hard wood or the like; the said plug is provided with a head or
cap which fits over the top of the cylinder and is formed with a central hole
through which the piston rod works, the diameter of the plug is less than the
interior diameter of the cylinder and over the plug is sprung a tube or band of
suitable elastic material such as vulcanized india rubber so that the plug may be
fitted tight into the cylinder.
By this construction the piston can be more easily operated, the packing when
worn can be easily and quickly replaced and there is no risk of the packing box
becoming detached from the cylinder; further, the syringes can be more easily
fitted up in manufacturing and have a neater appearance than those now in use.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Edmond Charles Williams in the Great Seal Patent Office on the
29th November 1883.
EDMOND CHARLES WILLIAMS, of 79, Fairfoot Road, in the county of Middlesex,
Manufacturer "IMPROVEMENTS IN GLASS SYRINGES"
This invention relates to improvements in glass syringes whereby their action
is improved and their construction simplified, and a neater appearance given to
the article.
Hitherto, in the construction of glass syringes, it has been the practice to provide
a cork plug in the top of the barrel or cylinder through which the piston rod
worked; this construction gives rise to several disadvantages amongst which may
be mentioned that the glass cylinder is frequently broken in forcing in the cork
plug, and the cork frequently becomes dry in hot weather and comes out of the
cylinder, thereby rendering the syringe useless.
Now by my improvements these defects are obviated.
1. provide a glass cylinder with the usual piston and rod but instead of the cork
plug, I provide a packing box constructed of a plug of suitable material such as
vegetable ivory, hard wood or the like; the said plug is provided with a head or
cap which fits over the top of the cylinder and is formed with a central hole
through which the piston rod works; the diameter of the plug. is less than the
interior diameter of the cylinder and over the plug is sprung a tube or band of
suitable elastic material such as vulcanized india rubber, so that the plug may be i
fitted tight into the cylinder.
In order to enable my invention to be fully understood I will proceed to describe
the same by reference to the accompanying drawing in which figure 1, is an
elevation, figure 2, an end view and figure 3, a longitudinal section of a glass
syringe constructed according to my invention; figure 4, is a side elevation and
figures 5, and 6, end elevations of the plug through which the piston rod works;
figures 7 and 8, side and end elevations respectively of the tube or band of elastic
material. Similar letters in all the figures represent similar parts.
a, is the glass cylinder or barrel of the syringe which is of ordinary construction
and b, is the usual piston and c, the piston rod; d, is the plug of suitable material
such as vegetable ivory, hard wood or the like; e, is the head or cap with which
the plug d, is provided, and which fits over the top of the cylinder or barrel a, as
shewn; f, is the central hole in the plug d, through which the piston rod works;
g, is the tube or band of suitable elastic material such as vulcanized india rubber
which is sprung over the plug d, and causes the plug to fit tight into the cylinder
or barrel a, the plug d, and tube or band g, thus forming a packing box through
which the piston rod c, can freely work.
By this construction the piston b, can be more easily operated, the packing
when worn can be easily and quickly replaced and there is no risk of the
packing box becoming detached from the cylinder; further, the syringes can be
more easily fitted up in manufacturing, and have a neater appearance than those
now in use.
Having thus described my invention and the best means with which I am

page_text: acquainted for carrying the same into effect, I wish it to be understood that what
I claim is
The manufacture and use of the improved glass syringes hereinbefore described
and represented in the accompanying drawing.
In witness whereof I the said Edmond Charles Williams have hereto set my
hand and seal this twenty sixth day of November in the year of our Lord one
thousand eight hundred and eighty three.
EDMOND CHARLES WILLIAMS (L.s.)