IMPROVEMENTS IN BLOWING-MACHINES
Year: 1883

page_text: כן
LETTERS PATENT to Friedrich Carl Glaser of Berlin in the Kingdom of
Prussia and Empire of Germany, Engineer and Patent Solicitor for an
Invention of "IMPROVEMENTS IN BLOWING-MACHINES cominunicated to him
by Bernhard Glöckner a person residing at Tschirndorf near Halbau in the
Kingdom of Prussia and German Empire
PROVISIONAL SPECIFICATION left by the said Friedrich Carl Glasor at
"
the Office of the Commissioners of Patents on the 2nd November 1883.
FRIEDRICH CARL GLASER of Berlin in the Kingdom of Prussia and Empire of
Germany, Engineor and Patent Solicitor IMPROVEMENTS IN BLOWING-MACHINES
[communicated to him by Bernhard Glöckner a person residing at Tschirndorf near
Halbau in the Kingdom of Prussia and German Empire]
This invention has reference to a blowing machine in which the hermetic
confinement of the air to be forced is effected by a fluid. The construction of the
machine will be readily understood on reference to the accompanying drawings in
which Figs. 1 and 2 shew vertical sections thereof and Fig. 3 a plan. The blowing
cylinder a is open at both ends and has at about its middle a partition to which is
fixed the discharge pipe c and the admission valve d. It is moved up and down in
the vessel b which is open at top and is filled with water or other liquid to such
an extent that the cylinder a, when in its highest position as at Fig. 1, still dips
with its bottom edge to a sufficient extent into the water to form an airtight joint.
The cylinder being raised, the valve d opens so as to admit air into it, which air,
on the descent of the cylinder is forced out through the pipe c, the pressure causing
the valve d to close. The pipe c is made of a diameter proportionate to the
pressure which the air blast is required to attain. According as this pressure is
greater or less, the water will stand at a higher or a lower level in the annular
space of the vessel b when the cylinder a is in its lowest position, as at Fig. 2, and
a column of water of about 13 inches in height will be equal to about 13 lbs. of
the mercury pressure gauge.
The advantages of this improved construction of blowing machine are, first, a
great saving of driving power, second, absolute hermetic enclosure by a liquid, and
third, the facility with which any desired pressure can be attained by regulating
the height of the column of water between the cylinder a and the vessel b.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
"
the said Friedrich Carl Glaser in the Patent Office on the 29th April 1884.
FRIEDRICH CARL GLASER of Berlin, in the Kingdom of Prussia and Empire of
Germany Engineer and Patent Solicitor. "IMPROVEMENTS IN BLOWING MACHINES
A communication to me by Bernhard Glöckner, a person residing at Tschirndorf
near Halbau in the Kingdom of Prussia and German Empire
This invention has reference to an improved construction of blowing machine in
which the hermetic confinement of the air to be forced is effected by a fluid.
The construction of the machine will be readily understood on reference to the
accompanying drawing. It consists of an outer cylinder or tank b, fig. 1, in which
an inner cylinder a is moved up and down by any convenient means, it being
guided in its motion by means of vertical guiding bars. At about the middle of its
height, the cylinder-a has a conical partition, on which is situated the air admission
valve d, communicating with the space below the partition, with which also
communicates the air discharge pipe c. The tank b is charged with water to such
'an extent that when this is displaced by the immersion of a, it will riso to within
a short distance of the top edge thereof, as shewn at fig. 2, while at the highest
position of a, its lower edge will still be immersed to a sufficient extent in the
water to form an effectual seal, as shewn at fig. 1.
The action of the machine is as follows:
On the cylinder a moving upwards, air will enter the space formed below the
partition through the valve d; on the descent of the cylinder, the descending
partition in pressing upon the confined air below it, will force it out through the
discharge pipe c at a pressure corresponding to that of the column of water in the
tank 6 produced by the displacement of the water from within the cylinder, as
shewn at fig. 2. As by sufficiently restricting the annular space between a and b,
and making the cylinder a of a height proportionate to the displacement, a column
of water of any desired height can be obtained, it will be seen that this apparatus
can be made to work with considerable pressure of blast, there being no other loss
loss of power than that due to the friction of the cylinder a in the water, and that
of the air passing through the pipes. Figs. 3 and 4 show a modified construction
of the apparatus in the two oxtreme positions, in which the discharge pipe c is led
down through the bottom of the apparatus instead of through the top, as in the
former case.
Having thus described the nature of this invention and in what manner the
same is to be performed, as communicated to me by my correspondent, I claim in
respect of the description of blowing machine herein referred to :-
First: The peculiar construction of the blowing cylinder a having a partition
at about the middle of its height and operating in combination with a tank b
containing liquid, in such manner that when the cylinder is immersed in the liquid
this will rise to a considerable height above the partition in the annular space
surrounding the cylinder, producing a corresponding pressure of the confined air,
substantially as herein described.
Second: In combination with the cylinder a, the inlet valve & mounted on the
partition, and the discharge pipe c communicating with the space below the
partition
In Witness whereof I the said Friedrich Carl Glaser have hereunto set my
hand and seal this twenty-third day of April in the year of our Lord, one thousand
oight hundred and eighty-four.