Improvements in and connected with Dredgers.
Year: 1890

page_text: Date of Application, 13th Sept., 1890
Complete "Specification Left, 11th June, 1891-Accepted, 11th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in and connected with Dredgers.
I, HENRY CHRISTIAN L'OBNITZ, of the Slip Dock, Renfrew, in the County of
Renfrew, North Britain, Engineer and Shipbuilder, do hereby declare the nature
of this invention to be as follows, that is to say:
My said invention has for its object to render dredges conveniently and efficiently
capable of operating in various situations and for purposes for which ordinary
arrangements are not so suitable; and my improvements are applicable to combined
hopper-dredgers as well as to others.
In carrying out my invention I construct the framing which carries the upper
end of the bucket ladder together with gearing and other parts so as to be capable
of sliding or moving along the deck of the dredger on suitable rails or guides. The
framing is suitably constructed to render it independent of ordinary permanent
connections; and it is movable along the rails or guides by means of one or more
screws, racks and pinions, or other suitable gear. The gearing for driving the top
tumbler or drum of the ladder is driven from a longitudinal shaft, through a pair of
bevil wheels arranged to shift along the shaft when the frame is moved or by other
suitable means. The framing has fixed to it the delivery shoot and other parts;
and there is, by preference mounted upon and within it the guide wheel the appli-
cation of which is described in the Specification of my Patent No. 3953 of 1882.
The framing to which the lower end of the bucket ladder is connected by hoisting
tackle may be fixed on the dredger in the ordinary way; or it may be movable,
either as an extension of the main framing, or as a separate framing.
"With the improved construction herein before described there may be combined
rock cutting apparatus of the kind described in the Specification of my Patent
No. 14016 of 1886, and such apparatus may be made adjustable in position on the
dredger either along with or independently of the main movable framing.
Dated this Twelfth day of September 1890.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in and connected with Dredgers.
I, HENRY CHRISTIAN LOBNITZ, of the Slip Dock, Renfrew, in the County of
Renfrew, North Britain, Engineer and Shipbuilder, 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, that is to say :-
My said invention has for its object to render dredgers conveniently and
efficiently capable of operating in various situations and for purposes for which
ordinary arrangements are not so suitable; and my improvements are applicable to
combined hopper-dredgers as well as to others.
In carrying out my invention I construct the framing which carries the upper
end of the bucket ladder together with gearing and other parts so as to be capable
of sliding or moving along the deck of the dredger on suitable rails or guides. The
framing is suitably constructed to render it independent of ordinary permanent
connections; and it is movable along the rails or guides by means of one or more
screws, racks and pinions, or other suitable gear. The gearing for driving the top
tumbler or drum of the ladder, is driven from a longitudinal shaft, through a pair
of bevil wheels arranged to shift along the shaft when the frame is moved or by
Pin 21

page_text: other suitable means. The framing has fixed to it the delivery shoot and other
parts; and there is, by preference, mounted upon and within it the guide wheel
the application of which is described in the Specification of my Patent No. 3953
of 1882. The framing to which the lower end of the bucket ladder is connected
by hoisting tackle may be fixed on the dredger in the ordinary way; or it may
be movable, either as an extension of the main framing, or as a separate framing.
With the improved construction described there may be combined rock cutting
apparatus of the kind described in the Specification of my Patent No. 14016
of 1886 and such apparatus may be made adjustable in position on the dredger
either along with or independently of the main movable framing.
And in order that my said invention and the manner of performing the same
may be properly understood I hereunto append a sheet of explanatory drawings to
be hereinafter referred to and showing two examples of my improved arrangements.
Those skilled in the construction of dredgers and dredging machinery will have
no difficulty in practically carrying out my improvements from the foregoing
description and accompanying drawings, the latter being, however, simple diagrams
and not showing in minute and elaborate detail well known parts or constructive
elements.
Figure 1, is a sectional side elevation of a dredger as fitted with one modification
of the apparatus, in which the framing, A, carrying the upper end of the bucket
ladder, B, and other parts, is movable along the deck, C, of the dredger, a second
position of the framing being indicated by dotted lines. The gearing for driving
the top tumbler, D, is driven from a longitudinal shaft, E, shown by a dotted line,
through bevil wheels, F, movable along the shaft and engaging therewith by a
feather and groove.
The framing, A, has the guide wheel, G, mounted within it, according to my
Patent No. 3953 of 1882.
The framing, H, to which the lower end of the bucket ladder, B, is connected by
hoisting tackle, is, in this modification, fixed on the dredger in the ordinary way.
In the modification shown in Figure, 2, which is also a sectional side elevation,
the movable framing, A, is carried by and movable upon a framing, J, fixed in
position upon the deck, and which if desired, may be made higher than as shown,
the framing, A, being in that case made correspondingly smaller. In this modifi-
cation the framing, A, is extended in a forward part, K, having on it the framing, L,
to which the lower end of the bucket ladder, B, is connected by hoisting tackle,
or the framing, L, may be movable separately from the framing, A.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is,
1. In a dredger making the framing carrying the upper end of the bucket ladder
and other parts, movable or adjustable horizontally on guides or rails on the deck
of the vessel or on framing more or less raised above the deck, substantially as
herein before described.
2. In a dredger making the framing to which is connected the hoisting tackle of
the lower end of the bucket ladder movable or adjustable horizontally either along
with or independently of the framing carrying the upper end of the bucket ladder,
substantially as hereinbefore described.
Dated this Tenth day of June 1891.
EDMUND HUNT,
Applicant's Agent.