Year: 1885

page_text: I BRUNO VERSEN of Number 3 Kuhstreet, Dortmund, Prussia, in the Empire of
Germany, 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 relates to the process of ramming or punning converter bottoms
without air-holes by machinal contrivances and subsequently producing air holes
by piercing or boring. Also to the apparatus therefor, in which is moved over the
curved part of the bottom a rammer actuated in the manner of a whip hammer,
spring-hammer or rock borer, and secured to a revolvable crane-lever, adapted to
be raised, the rammer working vertically or obliquely. Also of a mechanically
moved rammer arranged to revolve round a spindle placed in the axis of the
converter, and capable of being raised to correspond to the increasing ramming.
Referring to the annexed drawings:-
The converter bottom is completely rammed by means of the stamping
apparatus I without the aid of needles. Subsequently the air holes are pierced
by a pressing knob fitted with needles and adapted to be moved by hydraulic
force, as shown by the drawings, or by a screw.
The stamping apparatus I Figs 1, 2 and 3, consists essentially of a revolvable
crane-lever a, to the extremity of which is secured the rammer proper b, revolvable
round a horizontal axle 6'. This rammer is in some measure like a whip hammer,
preferably with automatical regulation, and may be driven by compressed air,
steam or gas and with a crane lever can easily be lifted by hydraulic force, by the
pressing cylinder a' forming the upper crane-post being brought in connection with
the hydraulic main through the perforated post a². This vertical motion. may also
be effected by gearing from the crane post, saine being provided with a screw
thread and arranged to revolve. Also the rammer may be constructed as a spring
hammer and likewise driven by gearing.
In the middle under the rammer proper the table c is arranged and in the present
case it has an annular shape for allowing the piercing contrivance to be placed
directly under the same." The table is supported by four rollers c¹ and provided
outside with a toothed tyre d gearing into the toothed wheel d', which is driven

page_text: by the friction disc e and the friction beam f from the pulley g by the aid of
gearing. The frict on beam f is arranged radially changeable by hydraulic force
under the friction disc e by means of the small cylinder h, for allowing the number
of revolutions to be easily regulated according to necessity corresponding to the
size of the circle, covered by the rammer. The rotary motion is easily interrupted 5
' every moment by the friction disc m being adapted to be withdrawn from the
driving beam f by the foot lever i.
-
For ramming the apparatus is operated by the handle by the right hand, from
the rim to the centre of the bottom and vice versa, and thereby describes concentric
circles on the simultaneously rotating bottom.
The regulator e for raising and lowering the crane-lever and for changing the
friction beam, is placed suitably at the left hand of the operator so as to allow him
to manage the whole apparatus every moment.
After the ramming is finished, the air holes are pierced by needles m¹ arranged
under the ramming table and moved by hydraulic force through a cylinder m. For
more easy regulation the pressing knob is slightly radially changeable, the converter
bottom being held by a strong and easily detachable hooping.
The apparatus II Figs 5 and 6, shows a modification of the first arrangement
and is chiefly adapted to produce nozzle-bottoms. The crane-lever a is furnished
with a binge v for allowing the intermediate space round each nozzle to be suitably
.touched. The bottom c is revolved so that two opposite rollers of the four rollers c¹,
by which it is supported, are moved by the toothed wheels p and toothed bars q of
the bydraulic cylinder r. The bottom revolves thereby more than its entire
circumference alternately in the one and the contrary direction. 8 are guides of
the traverse 8. The management of the apparatus while 'ramming is similar to
that of the former apparatus but the revolution while ramming must be produced
intermittently.
For allowing every surface of rotation to be rammed as needed the rammer
proper is again arranged to revolve round a horizontal axle f¹. The piercing
contrivance is of course dispensed with.
•
For ramming converters, a spindle t is erected stationary in the centre axle of
the same as shown by Fig. 7. With the arrangement Figa 8 and 9, the spindle is
provided with a screw thread, to which fits the rammer tube 24.
With the latter
the rammer v capable of revolving is connected by a hinge, and radially changeable
with two fork bars. The operating is effected so that the person ramming moves
the rammer like a pendulum, that is to say radially, and, walking simultaneously
round in a circle, raises the stamping apparatus and himself by means of the screw
thread For effecting this, a tube x is loosely coupled by a flange w with the
stamping tube and prevented from turning by two springs y.
A banging scaffold can easily be suspended from the tube x to serve as a solid
resting-place. For the purpose of accelerating the work, a further rammer can
easily be arranged at the second or upper tube u¹. In the case of a converter of
the shape represented a part remains below, which cannot be rammed immediately.
For stamping this part the spindle a is worked in an inclined manner, and
subsequently this latter part is stamped. The converter is dressed inside with a
tin mantle in rings in the usual manner.
In Fig. 10 the ramming tubes revolve in a coupling box z, which is clipped fast
on the smooth spindle ¹, the upward motion being effected simply by banging the
coupling box z on a tackle.
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 process of ramming or punning converter bottoms without air holes by
machinal contrivances and subsequently producing air holes by piercing or boring.

page_text: 2. The apparatus therefor, in which is moved, over the curved part of the
bottom, a rammer actuated in the manner of a whip hammer, spring-hammer or
rock burer, and secured to a revolvable crane-lever, adapted to be raised, the
rammer working vertically or obliquely.
.
3. A mechanically moved rammer arranged to revolve round a spindle placed in
the axis of the converter, and capable of being raised to correspond to the increasing
ramming.
had and illustrated