Year: 1886

page_text: I, HERBERT JOHN HADDAN, of 67 Strand, in the County of Middlesex, Civil
Engineer, do hereby declare the nature of this invention a communication to me
from abroad by P Jonasen of Horsens, Denmark, Gentleman, and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
The improvement consists, first in the construction of a revolving slide in
connection with the cylinder, and next in a new and special application of the
crank of the piston-rod. Both improvements will be found more closely illustrated
and explained on the annexed drawing. Fig. 1 is a perspective view of the
exterior parts of the gas-motor with the revolving slide to the left. Fig. 2 shows
likewise the motor but in cross section through the working-cylinder and slide.
Fig. 3 is the cylinder with the slide in cross section, and Fig. 4 shows in a vertical
transverse section the position both cylinders have towards one another. As
shown by the drawings the slide forms in its outer appearance a right-angled
slide-case A, which is connected with one end of the cylinder B; the cylindric
slide apparatus C is applied to one side of the slide-case and consists of three
round plates as shown in Fig 5, 6 and 7, D Fig. 5, is the base of the slide or that
base towards which the movable slide is revolving. E Fig. 6, is the revolving slide
on the outside of D, and F, Fig. 7 is the plate, affixed outside the revolving one,
and through which the gas is let in. G is a bar put over the last-named plate
embracing the slide axle E' and fastened by two bolts g and h. In the three
plates, mentioned, are made different perforations, partly for the gas and partly
for the passage of the air; this cannot, however, be characterized as anything
especially new, and it is therefore but loosely mentioned. The slide is shown in
all the figures: in Fig. 1 closed, as seen from the outside, in Fig. 2 in a vertical
and in Fig. 3 in a horizontal section, but it is furthermore to make plain its cou-
struction drawn in larger dimensions in Fig. 8; here is also indicated by a dotted
line the pipe for the influx of gas to the opening n in the plate F, Fig. 7, from
which the gas enters the right-angled slide-case A. The piston-rod E', which is
fastened to the revolving slide E, rests on the opposite end on the pillar K, and
here is on the end of the piston-rod affixed a conical, toothed wheel L, which is

page_text: catching in a smaller wheel on the crank-axle N for the cylinder piston-rod H; the
mentioned smaller toothed wheel o, which is placed in a right angle to the wheel L,
is only indicated by a dotted line, just as the periphery-circle of the crank is
shown by the dotted line R. In this way the revolving slide is put in motion
from the axle of the crank, and the speed of the slide is regulated by the toothed
wheels. It will be noted that the crank-axle for the cylinder-piston-rod is placed
much lower than the horizontal point for the centre of the cylinder-piston. By
this means the connection-rod between the cylinder-piston-rod and the crank is
active on a longer piece of the crank's circle during the passage of the cylinder-
piston from the left to the right, than it would be if the crank was as usually
placed at equal height to the centre of the piston.
Thus is obtained an increase of power, but it must here be observed that this
only is possible by the gas motors having explosion generated in one end of the
cylinder, as is the case with the motor here described. By machines having
explosion in both ends of the cylinder, the increase of power would be illusory as
during the passage of the piston to the one side would be lost what was gained to
the other.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. The revolving slide-apparatus, applied to one end of the cylinder, at an angle
or parallel to it in connection with the slide-case or the chamber A issuing from
the cylinder, where the gas is mingled with air for producing explosion.
2. Placing the crank-axle lower than the centre of the cylinder-piston, by
which a longer effective movement during one passage of the piston is obtained.
All substantially as illustrated and described for the purposes set forth.
Dated this 10th day of February 1886.