AN IMPROVED MECHANICAL ARRANGE- TO BE EMPLOYED IN CONNEXION WITH SELF-ACTING VALVES
Year: 1868

page_text: LETTERS PATENT to Auguste Bochkoltz, Civil Engineer, Inspector-
General of Railways, of the City of Vienna, in the Empire of
Austria, for the Invention of "AN IMPROVED MECHANICAL ARRANGE-
دو
Sealed the 17th April 1868, and dated the 18th January 1868.
PROVISIONAL SPECIFICATION left by the said Auguste Bochkoltz
at the Office of the Commissioners of Patents, with his Petition,
on the 18th January 1868.
I, AUGUSTE BOCHкOLTZ, Civil Engineer, Inspector-General of Rail-
ways, of the City of Vienna, in the Empire of Austria, do hereby
declare the nature of the said Invention for "AN IMPROVED MECHANICAL
ARRANGEMENT TO BE EMPLOYED IN CONNEXION WITH SELF-ACTING VALVES," to
be as follows:-
The object of this Invention is to prevent the waste of motive power
in self-acting valves, especially such as those which are employed in
pumps. No such valve having pressure on its upper surface can open
spontaneously until the pressure on its under surface overcomes that
which keeps it in its seat, and in obtaining such last-mentioned pressure

page_text: a considerable waste of motive power takes place. This loss may be to a
great extent if not wholly avoided by means of the mechanical arrange-
ment which is the subject of this Invention, such arrangement acting
as a "regenerator" of power.
In the annexed Drawings Figures 1, 2, and 3 represent respectively
a front, a side, and a plan view of the arrangement. Its essential parts
are a weight Q fixed on the end of the arm o, b, which has an oscillating
or pendulum-like motion from the axis o. To this arm o, b, is attached
a second arm o, a, the two arms forming together a crank lever, by
means of which the weight Q is easily placed in communication with
the main pump rod m, n, from which it receives the oscillatory motion.
The arm o, a, is connected with the main pump rod by the connecting
rod a, c, as usually practised with counterbalanced beams, or the
weight may be connected with the main pump rod by any other
suitable and known manner, provided that it imparts to the weight Q
at each single motion of the main pump rod a double motion, namely,
first, a descending, and secondly, an ascending motion, bringing it up
to its original level. The result may be attained in different ways;
but the use of the crank lever and the connecting rod is preferred. In
order to reduce to a minimum the transverse strain of the connecting
rod on the main pump rod, and consequently the lateral inflexion and
friction in the guides used for the rod, the two arms a, c, and o, b, being
at right angles to each other the entire angle of oscillation at a, o, a¹,
is divided into two equal parts by the horizontal plane passing through
the axis of oscillation o, and the connecting rod is so arranged that the
angle of oscillation which it describes in its entire course is divided
into two equal parts by the vertical plane parallel to the axis of oscil-
lation passing through the point c, at which the connecting rod is
attached to the main pump rod, as indicated by the line c, d. When
it is not considered essential to reduce to a minimum the transversal
strain of the connecting rod on the main pump rod the arm a, o, and
the connecting rod may be so arranged that their angles of oscillation
are not respectively divided into two equal parts by the horizontal
plane passing through the axis o, and the vertical plane passing
through the point c, provided that the weight Q fulfils the essential
condition of falling and rising through equal distances at every stroke
of the main pump rod. In cases where, notwithstanding the pre-
cautions above described, the transverse strain of the connecting rod
on the main pump rod may be too great, arising either from the size

page_text: of the weight Q or from the dimensions given to the arms of the lever
on which it acts, or from any other cause, in place of one regenerator
of power, such as that previously described, two may be arranged sym-
metrically, one on each side of the main pump rod, the same being of
equal power, as frequently done with large counterbalance beams. The
transverse strain of each will not only be reduced one-half, but they
will reciprocally counterbalance each other and cease to have any
injurious effect on the main pump rod. The axis of oscillation o with
its journals rests upon scats fixed in the ordinary manner on. their
foundations, which should be placed sufficiently wide apart to allow
the arm o, b, and the weight attached thereto to oscillate freely to an
extent corresponding with the stroke of the main pump rod. In the
Figures 1, 2, and 3 of the annexed Drawings the main pump rod is
supposed to be at its lowest point, and the arms and weight or regenerator
in a corresponding position. The dotted lines indicate the arcs described
by the arms a, o, and o, b, and that of the arms themselves when their
position is reversed. The size of the weight Q depends on the supple-
mentary effect to be brought to bear on the main pump rod in order to
produce the spontaneous opening of the pump valves and the relative
strength of the lever arms; it must be calculated for each case. The
length of the arms a, o, and o, b, and that of the connecting rod may be
varied as required, regard being had to the rules usually observed in
the adjustment of balance beams. More than one weight may be used,
and whether there be one or several they can be arranged in various
ways. The arrangement as above described may be combined with a
counterbalance beam. It is shewn at Figure 4, in which P is the
ordinary counterbalance weight. Finally, this last arrangement may
be superseded by that shewn in Figure 5, where the weight R replaces
the two weights Q and P, and effects singly the purpose of the two.
By means of this Invention the loss of effective work in pumping
engines, caused by the excess of weight which it has hitherto been
necessary to give to the main pump rod in order to work the self-acting.
valves, or to obtain more speed in such engines, is avoided, and the said.
excess of weight dispensed with.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Auguste Bochkoltz in the Great Seal Patent
Office on the 4th July 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, AUGUSTE
BOCHKOLTZ, Civil Engineer, Inspector-General of Railways, of the City
of Vienna, in the Empire of Austria, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of January, in the
year of our Lord One thousand eight hundred and sixty-eight, in
the thirty-first year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Auguste Bochkoltz, Her
special licence that I, the said Auguste Bochkoltz, my executors,
administrators, and assigns, or such others as I, the said Auguste
Bochkoltz, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention
for "AN IMPROVED MECHANICAL ARRANGEMENT TO BE EMPLOYED IN CONNECTION
WITH SELF-ACTING VALVES," upon the condition (amongst others) that I,
the said Auguste Bochkoltz, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within
six calender months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said Auguste Bochkoltz, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the Drawings here-
unto annexed, and to the figures and letters marked thereon, that is
to say:-
My said Invention consists in certain arrangements the object of
which is to prevent the waste of motive power in self-acting valves,
especially such as those which are employed in pumps. No such valve
having pressure on its upper surface can open spontaneously until the.

page_text: pressure on its under surface overcomes that which keeps it on its seat,
and in obtaining such last-mentioned pressure a considerable waste of
motive power takes place. This loss may be to a great extent if not
wholly avoided by means of the mechanical arrangement which is the
subject of this Invention, such arrangement acting as a "regenerator"
of
power.
The nature of my said Invention will be more clearly understood
by reference throughout the following description to the annexed
Drawings.
Figures 1, 2, and 3 represent respectively a front, a side, and a plan
view of the arrangement. Its essential parts are a weight Q fixed on
the end of the arm o, b, which arm has an oscillating or pendulum-like
motion from the axis o. To the arm o, b, is attached a second arm o, a,
the two arms forming together a crank lever by means of which the
weight Q is easily placed in communication with the main pump rod
m, n, from which it receives the oscillating motion. The arm o, a, is
connected with the main pump rod by the connecting rod a, c, as
usually practised with counterbalanced beams, or the weight Q may
be connected with the main pump rod in any other suitable and known
manner provided that it imparts to the weight Q at each single motion-
of the main pump rod a double motion, namely, first a descending
motion, and, secondly, an ascending motion, bringing it up to its original
level. The result may be, obtained in different ways, but the use of
the crank lever and the connecting rod is preferred. In order to reduce
to a minimum the transverse strain of the connecting rod on the main
pump rod, and consequently the lateral inflexion and friction in the
guides used for the rod, the two arms a, o, and o, b, being at right
angles to each other, the entire angle of oscillation at a, o, a', is divided
into two equal parts by the horizontal plane passing through the axis
of oscillation o, and the connecting rod is so arranged that the angle
of oscillation which it describes in its entire course. is divided into
two equal parts by the vertical plane parallel to the axis of oscillation
passing through the point c at which the connecting rod is attached
to the main pump rod, as indicated by the line c, d. When it is not
considered essential to reduce to a minimum the transversal strain of
the connecting rod on the main pump rod the arm a, o, and the con-
necting rod may be so arranged that their angles of oscillation are not
respectively divided into two equal parts by the horizontal plane passing.

page_text: through the axis o and the vertical plane passing through the point c
provided that the weight Q fulfils the essential condition of falling and
rising through equal distances at every stroke of the main pump rod.
In cases where notwithstanding the precautions above indicated the
transverse strain of the connecting rod on the main pump rod may
be too great, arising either from the size of the weight Q, or from the
dimensions given to the arms of the lever on which it acts, or from
any other cause, in place of one regenerator" of power such as that
previously described, two may be arranged symmetrically one on each
side of the main pump rod, the same being of equal power, as frequently
done with large counterbalance beams. The transverse strain of each
will not only be reduced one-half but they will reciprocally counter-
balance each other and cease to have any injurious effect on the main
pump rod. The axis of oscillation o with its journals rests upon seats
fixed in the ordinary manner on their foundations, which should be
placed sufficiently wide apart to allow the arm o, b, and the weight
attached thereto to oscillate freely to an extent corresponding with
the stroke of the main pump rod.
In the Figures 1, 2, and 3 of the annexed Drawings the main pump
rod is supposed to be at its lowest point and the arms and weight or
"regenerator" in a corresponding position. The dotted lines indicate
the arcs described by the arms a, o, and o, b, and the arms themselves
when their position is reversed. The size of the weight Q depends on
the supplementary effect to be brought to bear on the main pump rod
in order to produce the spontaneous opening of the pump valves and
the relative strength of the lever arms; it must in fact be calculated
in each case. The length of the arms a, o, and o, b, and that of the
connecting rod may be varied as required, regard being had to the rules
usually observed in the adjustment of balance beams. More than one
weight may be used, and whether there be one or several they can be
arranged in various ways. The arrangement as above described may
be combined with a counterbalance beam. It is shown at Figure 4, in
which P is the ordinary balance weight. Finally, this last arrangement
may be superseded by that shewn in Figure 5, where the weight R
replaces the two weights Q and P, and effects singly the purpose of
the two.
By means of my said Invention the loss of effective work in pumping

page_text: necessary to give to the main pump rod in order to work the self-acting
valves, or to obtain more speed in such engines, is avoided, and the said
excess of weight is dispensed with.
Having thus declared and ascertained the nature of my said Invention,
and the manner in which it is to be performed, I would observe in
conclusion that what I consider novel and original, and therefore claim
as constituting the Invention secured to me by the said herein-before
in part recited Letters Patent are, the arrangement and combination
of parts and mechanism herein-before described and set forth as and for
the purposes aforesaid, or any mere modifications thereof.
In witness whereof, I, the said Auguste Bochkoltz, have hereunto
set my hand and seal, this Ninth day of June, in the year of our
Lord One thousand eight hundred and sixty-eight.
AUGUSTE BOCHKOLTZ. (L.S.)
5 Witnessed upon request by
LOUIS LEO WOLF,
A citizen of the U. S.,
residing at Vienna.