Year: 1897

page_text: (A communication from EUGENE FOURNIER, of Paris, in the Republic of France,
Pharmaceutical Chemist.)
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, in the County of Middlesex,
Chartered Patent Agent, do hereby declare the nature of this invention to be as
follows:-
The syringe forming the subject of the present invention consists chiefly of a
glass tube the cylindrical part of which is graduated, the graduations being pre-
ferably in cubic centimeters and fractions of centimeters and marked in figures
on both sides, the figures being in opposite directions, so as to enable the indica-
tions to be easily read whether the syringe be used for injecting or for drawing
out. One end of the tube forms a point with an internal passage forming a con-
tinuation of the hollow cylindrical interior. The outer surface of the end is
ground to receive the setting or socket of the injecting needles. The other end
of the tube has preferably a collar or flange of such shape as to form two lugs
forming finger-rests-for the index and middle fingers of the hand when using
the syringe.
In the cylindrical hollow moves an expanding or elastic piston constituted by a
rubber washer the diameter of which can be increased or decreased, as it is held
between a shoulder at the end of a cylindrical tube forming the piston rod, and
a head secured at the end of another rod placed inside the tubular piston rod and
projecting at each end beyond the latter. The rubber-washer is thus carried by
the inner rod which on the side of the shoulder is provided with a hook engaging
with and longitudinally movable in a corresponding recess in the inner surface of
the shoulder of the tubular piston rod.
The other end of the inner rod has a screw-threaded portion on which can be
screwed a milled head with corresponding inner screw-thread and a milled washer
forming a nut on the inner rod below the knob and resting directly on the corre-
sponding end of the piston-rod.
A thin and flexible metal-socket closes the upper orifice of the tube. This socket
also acts as a guide to the piston-rod passing through its centre.
All the different hereinbefore described parts being put together it will be under-
stood that the regulating of the tightness of the piston in the syringe is effected
by means of the washer-nut which is screwed on the inner rod, resting always
against the end of the hollow rod and when the degree of tightness has thus been
regulated, it is ensured by firmly screwing down the knob on the rod against the
corresponding surface of the washer.

page_text: During the screwing of the nut-washer on the rod the latter cannot turn in
the piston-rod as its hook or projection is in the corresponding recess of said
piston-rod. The washer-nut pressing against the end of the tubular piston rod
the screwing will have for its result to pull the inner rod upwards and, consequently
to bring the head nearer the shoulder and thus to compress, and expand the rubber
washer while the unscrewing of the nut-washer will, on the contrary, permit
the rubber washer to contract, by moving the inner rod in the opposite direction,
and moving the head farther away from the shoulder.
The inner-screw threaded portion of the knob preferably extends right through
the latter. The inner recess in the tubular piston rod is made of sufficient length
to enable the inner rod to be moved to a sufficient extent in the tubular rod for
the regulation of the syringe.
The result of the combination of the nut-washer and knob is that if the latter
is accidentally unscrewed during the manipulation of the syringe, it cannot
influence the degree of fitting of the piston which will remain the same owing to 1
the nut-washer being independent of the knob.
The injecting needles specially made to be used with this syringe are formed
so that they can be fixed directly on to the ground portion of the point of the
syringe, but as it is desirable to enable any needles at present in use to be used
with this syringe, it is provided with a special holder having a socket destined to 2
be fixed on to the end of the syringe and with a point for receiving any kinds of
injection needles which could not be directly fixed to the end of the syringe.
Dated this 7th day of April 1897.
91
ни ади нас рух
(A communication from EUGENE FOURNIER, of Paris, in the Republic of France,
Pharmaceutical Chemist.)
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, in the County of Middlesex,
Chartered Patent. Agent, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:
-
The syringe forming the subject of the present invention is represented in the
accompanying drawings, in which
Figure 1 is a perspective view.
Figure 2 a longitudinal section, and
Figure 3 a detail view.
The syringe consists chiefly of a glass tube A the cylindrical part of which is
graduated, the graduations being preferably in cubic centimeters and fractions of
centimeters and marked in figures on both sides, the figures being in opposite
directions, so as to enable the indications to be easily read whether the syringe be
used for injecting or for drawing out. One end B of the tube forms a point with
an internal passage C forming a continuation of the hollow cylindrical interior D.
The outer surface of the end B is ground at E to receive the setting or socket of
the injecting needles. The other end of the tube has, preferably, a collar or
flange F of such shape as to form two lugs or flanges G H forming finger-rests
for the user.

page_text: In the interior D moves an expanding or elastic piston constituted by a rubber
washer I the diameter of which can be increased or decreased, as it is held between
a shoulder J at the end of a preferably cylindrical tube K forming the piston rod,
and a head L secured at the end of another rod M placed inside the tubular piston
rod K and projecting at each end beyond the latter. The rubber-washer I is
thus carried by the inner rod M which is provided with a hook or projection N
engaging with and longitudinally movable in a corresponding recess in the
inner surface of the shoulder J of the tubular piston rod K.
The other end of the inner rod M has a screw-threaded portion P on which is
screwed a milled head with corresponding inner screw-thread R and a milled
washer Qforming a nut on the inner rod M below the knob Q and resting directly
on the corresponding end T of the piston-rod K.
A thin and flexible metal or like socket U closes the upper orifice V of the
tube A. This socket also acts as a guide to the piston-rod K passing through its
centre.
All the different herein before described parts being put together in the manner
clearly shown in Figure 2 it will be understood that the regulating of the tightness
of the piston in the syringe is effected by screwing the washer-nut Q up or down
which rests always against the end of the hollow rod K and when the degree of
tightness has thus been regulated, it is ensured by firmly screwing down the
knob on the rod M against the corresponding surface of the washer Q.
During the screwing of the nut-washer Q on the rod M the latter cannot turn
in the piston-rod K as its projection engages with the corresponding recess of
said piston-rod. When the washer-nut, pressing against the end T of the tubular
piston rod K is rotated or screwed up it will pull the inner rod M upwards and,
consequently, bring the head L nearer the shoulder J and thus compress and
expand the rubber washer I, while the unscrewing of the nut-washer Q' will, on
the contrary, permit the rubber washer I to contract, by moving the inner rod M
in the opposite direction and moving the head L farther away from the shoulder J.
The inner screw-threaded portion R of the knob Q preferably extends right
through the latter. The inner recess in the tubular piston rod K is made of
sufficient length to enable the inner rod M to be moved to a sufficient extent in
the tubular rod K for the required degree of regulation of the syringe.
The result of the combination of the nut-washer Q and knob Q is that if the
latter is accidentally unscrewed during the manipulation of the syringe, it cannot
influence the degree of fitting of the piston which will remain the same owing to
the nut-washer Q¹ being independent of the knob Q.
The injecting needles to be used with this syringe are formed so that they can
be fixed directly on to the ground portion E of the point B, but as it is desirable
to enable any needles at present in use to be used with this syringe it is provided
with a special holder X Figure 3 having a socket X1 adapted to be fixed on to
the end E of the syringe, and with a point X" for receiving any kind of injection
needle which could not be directly fixed to the end E of the syringe.
Having now particularly described and ascertained the nature of this said inven-
tion as communicated to me by my foreign correspondent, and in what manner the
same is to be performed, I declare that what I claim is :--
1. A hypodermic or similar syringe consisting of a cylinder made in one piece
and having a ground point for receiving the injecting needles and a rear collar
with flanges serving as finger rests, said cylinder being graduated and indexed in
two directions, in combination with a piston constituted by an expansible washer
the pressure of which against the wall of the cylinder is regulated and maintained
y the combined action of a washer nut and knob screwing on the end of a central
rod M carried within a tubular piston rod and provided with a projection prevent
ing it from turning in the tubular rod whilst allowing it to move longitudinally
therein for the purpose of effecting the contraction or expansion of the washer

page_text: between the shoulders provided respectively on the said rods substantially as
described.
2. The combination and arrangement of parts constituting the complete syringe
substantially as described and illustrated in the accompanying drawings.
Dated this 21st dox of Donember 1897
BOULT & WADE,
Agents for the Applicant.