Year: 1895

page_text: Date of Application, 24th June, 1895
Complete Specification Left, 14th Mar., 1896-Accepted, 18th Apr., 1896
A communication by the Firm of JETTER & SCHEERER, of Tuttlingen,
Wurtemberg, in the Empire of Germany, Surgical Instrument Makers.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool and 6 Bank Street,
Manchester both in the County of Lancaster, 118 New Street, Birmingham
in the County of Warwick and 31 High Holborn in the County of Middlesex,
Civil Engineer, do hereby declare the nature of this invention to be as
follows:-
:-
This invention has for its object a syringe or injector which can be conveniently
taken to pieces or into its separate parts and the cylinder of which is closed by
axial pressure instead of by radial pressure as hitherto, by which means breakage
of the syringe cylinder, which is generally made of glass, is prevented, and the
separate parts, after the syringe has been taken to pieces, may be easily and
thoroughly cleaned or sterilised.
In the accompanying drawings:
-
Figure 1 is a vertical section of the syringe as a whole;
Figure 2 is a side elevation of same;
Figures 7 and 8 are vertical sections of a modified form of syringe ;
Figure 3 is a cross section of the end of the cylinder;
Figures 4 and 10 are separate side views of the cylinder casing, whilst
Figures 5, 6, 9, 11 and 12 are details.
The syringe or injector cylinder C is surrounded by a casing A which is stamped
out in one piece from sheet metal or some other suitable material and subsequently
suitably bent round as shown in Figures 4 and 10. On the upper open end of this
casing A, if the syringe is to be closed at the top by means of a nut, there is
formed on each side half of a hollow screw threaded pin a. The casing A is
flattened at the top at a¹ and a disc or cap D provided with a groove is seated
thereon, said cap having projections or flanges d (Figure 6) which engage over the
flattened part
of the case A whilst the under edges of these projections d rest
on the cylinder C and are pressed against said cylinder C by a nut which holds
together the two half pins a. The cylinder rests below on a soft inserted washer
ring c and this latter again on a disc B provided with an edging. The disc B may
if desired be ground above and the cylinder rest directly on said disc. The latter
has beneath it a small tube b which passes through the bottom of the casing A and
on said tube a pointed needle / or tube L is fitted. Instead of effecting the joint
or closing at the top by means of the cap D and nut E, said closing may be
effected by screw threading the outside of the tube b and suitably fitting thereon
a nut M which rests on the bottom or bent round part as of the casing A, by
tightening which nut the disc B or rather washer c lying thereon is pressed from
below upwards against the cylinder C and the latter is closed or shut off. The
cylinder C then rests at its upper end against the part a' of the casing, the two
half pins a being again held together by means of a nut N as shown in Figure 7.
In place of the screwed half pins a however, the casing A may be held fast at the
top to the cylinder C in a simpler way as shown in Figure 8. This consists in
depressing the free bent-round ends A¹ of the casing A so as to form grooves

page_text: corresponding to the diameter of the cylinder which engage over the cylinder edge
and hold the cylinder fast.
In order to washer or render the piston K tight, the piston rod F is made hollow
and provided at its lower end with a disc f and a cone f¹. A second rod H is
adjustably arranged in the hollow piston rod F and has also, below, a disc / and a
cone h¹. Between the two discs and h a soft piston washer K is placed. The
inner piston rod H is screw threaded at the top and may be axially adjusted within
the hollow threaded rod F by means of a nut J which engages with the threaded
top of rod H, this nut J being revolubly attached to the head G of the hollow
rod F. By this axial adjustment the two cones fl and h¹ may be approached to
one another or separated and the elastic washer ring K more or less tightly
pressed.
The cylinder may be provided with a double scale so that the quantity of the
liquid which is drawn in or expelled may at any time be accurately ascertained.
It is evident that other suitable devices may be employed for fixing the cylinder
in the casing without however altering the character of the invention.
Dated this 22nd day of June 1895.
A communication by the Firm of JETTER & SCHEERER, of Tuttlingen,
Wurtemberg, in the Empire of Germany, Surgical Instrument Makers.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, 118 New Street, Birmingham,
in the County of Warwick, and 31 High Holborn in the County of Middlesex,
Civil Engineer, 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 has for its object a syringe or injector which can be conveniently
taken to pieces or into its separate parts and the cylinder of which is closed by
axial pressure instead of by radial pressure as hitherto, by which means breakage
of the syringe cylinder, which is generally made of glass, is prevented, and the
separate parts, after the syringe has been taken to pieces, may be easily and
thoroughly cleaned or sterilised.
In the drawings accompanying the Provisional Specification,
Figure 1 is a vertical section of the syringe as a whole;
Figure 2 is a side elevation of same;
Figures 7 and 8 are vertical sections of a modified form of syringe;
Figure 3 is a cross section of the end of the cylinder ;
Figures 4 and 10 are separate side views of the cylinder casing, whilst
Figures 5, 6, 9, 11 and 12 are details.
The syringe or injector cylinder C is surrounded by a casing A which is stamped
out in one piece from sheet metal or some other suitable material and subsequently
suitably bent round as shown in Figures 4 and 10. On the upper open end of this
casing A, if the syringe is to be closed at the top by means of a nut, there is
formed on each side a half of a hollow screw threaded pin a. The casing A is
flattened at the top at a¹ and a disc or cap D provided with a groove is seated
thereon, said cap having projections or flanges d (Figure 6) which engage over the
flattened part al of the case A, whilst the under edges of these projections & rest

page_text: on the cylinder C and are pressed against said cylinder C by a nut E which holds
together the two half pins a. The cylinder rests below ou a soft inserted washer
ring c and this latter again on a disc B provided with an edging. The disc B may
if desired be ground above and the cylinder rest directly on said disc. The latter-
has beneath it a small tube b which passes through the bottom of the casing A. and
on said tube a pointed needle / or tube L is fitted. Instead of effecting the joint
or closing at the top by means of the cap D and nut E, said closing may be
effected by screw threading the outside of the tube 6 and suitably fitting thereon
a nut M which rests on the bottom or bent round part a² of the casing A, by
tightening which nut the disc B or rather washer clying thereon is pressed from
below upwards against the cylinder C and the latter is closed or shut off. The
cylinder C then rests at its upper end against the part a' of the casing, the two-
half pins a being again held together by means of a nut N as shown in Figure 7.
In place of the screwed half pins a however, the casing A may be held fast at the
top to the cylinder C in a simpler way as shown in Figure 8. This consists in
depressing the free bent-round ends A' of the casing A so as to form grooves.
corresponding to the diameter of the cylinder which engage over the cylinder edge.
and hold the cylinder fast.
In order to washer or render the piston K tight, the piston rod F is made hollow
and provided at its lower end with a disc f and a cone f¹. A second rod H is.
adjustably arranged in the hollow piston rod F and has also, below, a disc h and a
cone h. Between the two discs fand ha soft piston washer K is placed. The
inner piston rod H is screw threaded at the top and may be axially adjusted within
the hollow threaded rod F by means of a nut J which engages with the threaded.
top of rod H, this nut J being revolubly attached to the head G of the hollow
rod F. By this axial adjustment the two cones f¹ and h¹ may be approached to
one another or separated and the elastic washer ring K more or less tightly
pressed.
The cylinder may be provided with a double scale so that the quantity of the
liquid which is drawn in or expelled may at any time be accurately ascertained.
It is evident that other suitable devices may be employed for fixing the cylinder
in the casing without however altering the character of the invention.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated.
to me by my foreign correspondents, I declare that what I claim is :-
A syringe or injector adapted to be taken to pieces and to be closed by axial
pressure, characterised by the cylinder (C) being enclosed by a casing (A) which
has two sides cut away and an open end which is closed or held together by means
of the cylinder itself by inward flanges (A') formed at the ends of the casing to
engage the cylinder end, or by means of a special cap D which engages over a
screwed split pin (a) formed on the casing (A) and a nut (E), the washering or
tight-closing of the lower end of the cylinder being effected either by tightening
the said nut (E) or by means of a nut (M) engaging the thread of a nozzle
tube (b) between the bottom (a2) of the casing and a washer disc B over the
bottom of the cylinder, that is to say always by axial pressure, substantially as.
described.
Thin 12th dow of March 1006
WM. P. THOMPSON & Co.,
Agents.