for Comminuting the Ground and Separating out Coarse Parts.
Year: 1888

page_text: for Comminuting the Ground and Separating out Coarse Parts.
I, HERMANN VERING, engineer, residing at Hamburg, German Empire, do hereby
declare the nature of this invention to be as follows:-
The subject of my invention consists in an apparatus to be used in connection with
pumping dredgers and with such other dredgers as are provided with appliances for
Hoating away the ground by a current of water, and its purpose is to divide or
commninute the ground and to separate therefrom stones, pieces of wood and other
coarse parts previous to its being admitted to the pipe designed to convey the same.
In view hereof I arrange, at the receiving end of the suction or conveying pipe,
a grate and a series of blades revolving in the spaces between the bars of the grate,
the said blades having such shape as that their operating edges form an angle of
about 90 degrees or more with the outer edges of the grate-bars, the blades being thus
capable of pushing the coarse and indivisible parts along and away from the grate-bars
and to keep the grate clear, while they stir up and reduce the ground.
Dated the Twenty-third day of March 1888.
CARL PIEPER,
Agent for Applicant.

page_text: WICH DIEugers
for Comminuting the Ground and Separating out Coarse Parts.
I, HERMANN VERING, engineer, residing at Hamburg, German Empire, 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:-
The subject of my invention consists in an apparatus to be used in connection with
pumping dredgers and with such other dredgers as are provided with appliances for
floating away the excavated ground by a current of water, and the purpose of the
same is to divide or comminute the ground and to separate therefrom stones, pieces
of wood and other coarse parts previous to its being admitted to the pipe designed to
convey the same.
In view hereof I arrange, at the receiving end of the suction or conveying pipe,
a grate and a series of blades revolving in the spaces between the bars of the grate,
the said.blades having such shape as that their operating edges form an angle of
about 90 degrees or more with the outer edges of the grate-bars, the blades being thus
capable of pushing the coarse and indivisible parts along and away from the
grate-bars, and to keep the grate clear, while they stir up and reduce the ground.
Figures 1 and 2 of the annexed drawing show this apparatus applied to a pipe
serving to convey away the ground dug up and raised by a bucket dredger.
Figures 3, 4 and 5 represent the same in combination with the suction pipe of a
pumping-dredger.
In figures 1 and 2, is the trough into which the buckets of the dredger discharge
the ground at c, and e the pipe in which the latter is conveyed by means of a stream
of water, the water entering through holes fand passing by lateral orifices into the
trough . are the grate-bars and a the rotating blades, the said blades being fixed
to an axle driven by a strap and a pulley, or by other suitable means. During their
rotation these blades push the coarse solid parts upon the inclined wall d of the
trough, from where they may he removed, while the disintegrated ground passes in
mixture with water into the pipe e.
In the apparatus represented by figures 3, 4 and 5 in connection with a pumping-
dredger, the grate b and the blades a are located in a widened portion of the suction-
pipe el, the arrangement being such that the solid parts fall towards both sides of the
apparatus. The axle carrying the blades may in this case be driven by a chain
passing around the wheel g.

page_text: Having now particularly described and ascertained the nature of tis
tion and in what manner the same is to bo performed, 1 declare that what I
claim is:
The combination, with the pipe e of a bucket dredger, or with the suction-pipe e¹
of a pumping dredger, of a grate band of blades a revolving in the spaces between
the grate-bars, the operating edges of the blades being arranged to form an angle of
about 90 degrees or more with the outer edges of the grate-bars, substantially as and
for the purpose specified.