Improvements in Vacuum Hand Pump Apparatus for Medical and the like purposes.
Year: 1899

page_text: Date of Application, 18th Dec., 1899
Complete Specification Left, 17th Sept., 1900-Accepted, 1st Dec., 1900
PROVISIONAL SPECIFICATION.
Improvements in Vacuum Hand Pump Apparatus for Medical and the
like purposes.
We, JAMES HENRY STONE, of Bracebridge Street, Manufacturer, PHILLIP HENRY
BAILEY, 131, Nelson Road, Aston, Brassworker, HERBERT STONE, of Bracebridge
Street, Manufacturer, and CHARLES NOBLE MILNER, of Bracebridge Street, Works
Manager, all in the City of Birmingham, do hereby declare the nature of this in-
vention to be as follows:-
-
This invention relates to improvements in vacuum hand pump apparatus,
primarily intended for use in combination with medical appliances such as breast
exhausters or other similar devices.
In such appliances usually a glass vessel is used comprising a well, a suction
cap and a nozzle pipe to which an india-rubber tube is attached at whose outer
end is connected the mouthpiece, or the pump, or in some cases instead of the tube
and pump, an india rubber vacuum ball may be used.
Now this invention relates to the pump apparatus, and consists as follows:-A
short barrel is made with one end closed, and provided at its outer end with a
(screw) removable cover having a central hole to accommodate a tubular plunger
rod. The plunger itself has a central valve self-closing on the tubular rod, while
its exterior is provided with a cup leather acting upon the interior of the barrel.
Behind the plunger, and in the barrel, is a strong spring which forces forward the
plunger. At the outer end of the plunger rod, provision is made for one or more
fingers for compressing the same. This is conveniently effected by a projecting
finger piece on each side, so that by resting the rear end of the barrel against the
thumb (or palm of the hand) the first and second finger tips are simultaneously
brought to press upon the said projections to force downwards the plunger and
expel the air from the barrel, which escapes past the leather cup and through an
outlet hole provided in the barrel cap. Upon the removal of pressure of the fingers
the spring forces forwards the plunger and in so doing, the vacuum created behind
it, opens the central valve and thereby draws air &c. down the plunger rod into
the barrel from whence it is again expelled on the succeeding movement. Thus
a continuous exhausting action may be effected as long as desired, there being an
increasing vacuum in the tube or vessel to which the tube is attached. In some
if not most of medical usuages the removal of the instrument from the wound or
other sore part, while under a vacuum is objectionable-a condition existing in
instruments of present make-inasmuch as it frequently causes great pain to the
patient. In order to obviate this difficulty, one or more relief pressure air holes
are provided in the finger tip pressure projections upon the plunger rod, which,
under operation are covered (closed) by the fingers, but upon removal of the
fingers admits air to destroy the vacuum so that the instrument may be removed
perfectly easy.
Did thin 10th date of Donamban 1900
CHARLES T. POWELL,
Applicants' Agent,

page_text: #
Improvements in Vacuum Hand Pump Apparatus for Medical and the
like purposes.
We, JAMES HENRY STONE, of Bracebridge Street, Manufacturer, PHILLIP HENRY
BAILEY, 131, Nelson Road, Aston, Brassworker, HERBERT STONE, of Bracebridge
Street, Manufacturer, and CHARLES NOBLE MILNER, of Bracebridge Street, Works
Manager, all in the City of Birmingham, do hereby declare the nature of this in-
vention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This invention relates to improvements in vacuum hand pump apparatus,
primarily intended for use in combination with medical appliances such as breast
exhausters or other similar devices.
In such appliances usually a glass vessel is used comprising a well, a suction
cap and a nozzle pipe to which an india-rubber tube is attached at whose outer
end is connected the mouthpiece, or the pump, or in some cases instead of the
tube and pump, an india-rubber vacuum ball may be used.
Now this invention relates to the pump apparatus, and consists as hereinafter
described, reference being made to the accompanying sheet of drawings, in
which:
Fig. 1, is a sectional view of the pump apparatus.
Fig. 2, is a plan view of the apparatus.
Fig. 3, is a skeleton sketch showing the completed apparatus.
In the illustrations Figs. 1 and 2, we have only shown the pump device which
forms this our invention, and have omitted to show the well and the suction cap,
as such may be considerably varied in shape and arrangement, but in order to
explain their relative position, we have shown them in Fig. 3.
A short barrel 5, is made with one end closed, and provided at its outer end with
a (screw) removable cover 6, having a central hole to accommodate a tubular
plunger rod 7. The plunger 8, itself has a central valve 9, self-closing on the
tubular rod, while its exterior is provided with a cup leather 10, acting upon the
interior of the barrel. Behind the plunger, and in the barrel, is a strong
spring 11, which forces forward the plunger. At the outer end of the plunger
rod, provision is made for one or more fingers for compressing the same. This
is conveniently effected by a projecting finger piece 12, on each side, so that by
resting the rear end 13, of the barrel against the thumb (or palm of the hand)
the first and second finger tips are simultaneously brought to press upon the upper
side of the said projections 12, to force downwards the plunger and expel the air
from the barrel, which said air escapes past the leather cup and. through an outlet
hole 14, provided in the barrel cap. Upon the removal of pressure of the fingers
the spring forces forwards the plunger and in so doing, the vacuum created behind
it, opens the central valve 9, and thereby draws air &c. down the plunger rod 7,
into the barrel from whence it is again expelled on the succeeding movement.
Thus a continuous exhausting action may be effected as long as desired, there
being an increasing vacuum in the well 15 (see Fig. 3), to which the tube is
attached. It will be here understood that the suction cap 16, is placed upon the
breast, or wound, or the like, from which suction is desired.
In some, if not most of medical usuages, the removal of the instrument from the
wound or other sore part, while under a vacuum is objectionable, such a condition
existing in most if not all instruments of present make, inasmuch as it frequently
causes great pain to the patient. In order to obviate this difficulty, one or more
relief pressure air holes 17, are provided in the finger tip pressure projections 12,

page_text: upon the plunger rod, which communicate with the interior of the plunger 7,
and which, under operation are covered (closed) by the fingers, and thus inopera-
tive, but upon removal of the fingers, admits air to destroy the vacuum so that
the instrument may be removed perfectly easy.
Having now particularly described and ascertained the nature of this our said
invention, and in what manner the same is to be performed, we declare that what
we claim is;
In vacuum hand pump apparatus for medical and the like purposes, the com-
bination with the pump barrel, plunger and plunger rod, of vacuum releasing air
passages or holes such as 17 which may be readily closed or opened at will sub-
stantially as set forth and shown.
2. The general combination and arrangement of vacuum hand pump as herein-
described and shown upon the drawings, comprising the barrel 5, spring 11,
plunger leather 10, valve 9, outlet 14, and hollow rod 7, with outstanding pro-
jections 12, having finger tips with air communications 17, all substantially as
set forth and shown.
Dated this 15th day of September 1900.
CHARLES T. POWELL,
Applicants' Agent, 158, Edmund Street, Birmingham.