FIELD OF THE INVENTION
The present invention relates to a wiper system for installation on the cabin glass of
operating cabins in EOT cranes. More particularly, the present invention is directed to
providing a wiper system for cleaning glass pane of operator's cabin of an EOT crane
wherein the operator himself can clean the glasses as and when required while working to
ensure clear visibility in a quick, simple and safe manner.
BACKGROUND ART
It is a common experience in a typical steel plant, particularly in the area where iron and
steel is produced, the shop environment is very dusty. The dust floating in air regularly
settles on the cabin glasses of EOT cranes operating in the bay causing visibility problem to
the operator. As these cranes handle liquid metal at very high temperature, clear visibility is
extremely important to the operator for safe operation. Conventionally, the cabin glasses of
EOT cranes are cleaned manually at regular intervals. Since these cabins are attached to the
crane girder, cleaning etc. is done by opening existing cabin windows. This is very
cumbersome, time consuming and prone to safety hazards. Also such cleaning requires
stopping of crane operation for the time during which cleaning is carried out causing loss of
productive time.
There has been therefore a persistent need in the related field to developing a device for
cleaning of cabin glasses of operator's cabin which would be built-in and can be operated by
the operator himself to solve visibility problem to the operator in simple yet safe manner
without causing down-time.
OBJECTS OF THE INVENTION
The basic object of the present invention is thus directed to providing a wiper system for
operator's cabin of EOT crane which can be operated by the crane operator himself from
within the cabin to clean the dust deposited on cabin glass ensuring clear visibility required
for safe operation of crane.

A further object of the present invention is directed to said wiper system for operator's
cabin of EOT crane which would be fast, simple and safe to operate without need for
opening of cabin window.
A still further object of the present invention is directed to said wiper system for operator's
cabin of EOT crane using which the operator would clean the glasses as and when required
while working.
A still further object of the present invention is directed to said wiper system for operator's
cabin of EOT crane wherein the wiper mechanism is made very simple yet effective and
user friendly.
A still further object of the present invention is directed to said wiper system for operator's
cabin of EOT crane wherein the pressure of wiper on the glass is adjusted by operating
adjusting nuts for desired cleaning action.
A still further object of the present invention is directed to said wiper system for operator's
cabin of EOT crane which would enable avoiding downtime of crane due to cleaning of cabin
glass.
SUMMARY OF THE INVENTION
The basic aspect of the present invention is directed to providing a wiper system for
cleaning dust deposit on the cabin glass of operating cabin in EOT cranes, comprising
a wiper arm mounted on cabin wall with a wiper shoe attached to it comprising of
shoe with felt wiper;
an operating handle operatively connected to said wiper arm adapted to provide a
swinging motion to said wiper arm from within the operators cabin.
A further aspect of the present invention is directed to said wiper system wherein said
operating handle is placed at a convenient place inside cabin and is easily approached by
the operator.

A still further aspect of the present invention is directed to a wiper system which comprises
spring means adapted to maintain the wiper shoe in intimate contact with the cabin glass to
effect desired wiping action.
A still further aspect of the present invention is directed to a wiper system which comprises
adjusting nuts for adjusting desired pressure of wiper on the glass.
A still further aspect of the present invention is directed to a wiper system which comprises
a counterweight means to balance wiper arm and shoe.
A still further aspect of the present invention is directed to a wiper system which is adapted
to clean dust on cabin glass as and when needed when the crane is in operation.
A still further aspect of the present invention is directed to a wiper system wherein said
wiper shoe comprises a metallic shoe housing said felt wiper.
The various objects and advantages of the present invention are described hereunder in
greater details with reference to the following accompanying nonlimiting illustrative
drawings.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Figure 1: is the schematic illustration of a typical arrangement of EOT crane used in steel
plant particularly in the area where iron and steel is produced , showing the disposition of
its operator's cabin.
Figure 2: is the schematic arrangement of the operator cabin of EOT crane with the wiper
device according to the present invention installed on front panel for cleaning of cabin glass.
Figure 3: is the enlarged sectional view of the wiper device according to the present
invention showing internal details of the system and its different components installed in
relation to the operator's cabin of EOT crane.

DETAILED DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE
ACCOMPANYING DRAWINGS.
The present invention is directed to a wiper system for installation on operating cabins in
EOT cranes for cleaning deposited dusts from glass pane of operator's cabin by the operator
himself as and when required from within the cabin while the crane is in operation.
It is well known that in a typical steel plant, particularly in the area where iron and steel is
produced, the shop environment is very dusty. Accompanying Figure 1 is the schematic
illustration of a typical arrangement of EOT crane used in steel plant particularly in the area
where iron and steel is produced , showing the disposition of its operator's cabin.
The dust floating in air regularly settles on the cabin glasses of EOT cranes operating in the
bay causing visibility problem to the operator. This is highly unsafe for crane operation
particularly when handling liquid metal in SMS. Clear visibility of the operator is thus an
essential requirement under such shop condition. The present invention thus implements a
dust wiper system for cabin glass of EOT crane to solve the problem of poor visibility.
Accompanying Figure 2 is the schematic arrangement of the operator cabin of EOT crane
with the wiper device according to the present invention installed on front panel for cleaning
of cabin glass. With the proposed wiper, cleaning can be done from inside the cabin by the
operator himself as per requirement. It is quick, and absolutely safe. The design of the
wiper mechanism has been made very simple yet effective and user friendly.
Accompanying Figure 3 is the enlarged sectional view of the wiper device according to the
present invention showing internal details of the system and its different components
installed in relation to the operator's cabin of EOT crane. It can be seen in Figure 3 that the
wiper is operated by the operating handle(l) which is placed at a convenient place and is
easily approached by the operator. A spring(2) has been used to keep the wiper shoe(3) in
intimate contact with the cabin glass(4). The wiper shoe(3) consists of metallic shoe which
houses felt wiper(5). The pressure of wiper on the glass(4) is adjusted by operating
adjusting nuts(6). A counterweight(7) has been provided to balance wiper arm(8) and
shoe(3).

The wiper system for cabin glass of EOT crane according to the present invention has been
tested for successful performance on installation in SMS crane and found to having the
following advantageous features:
1. The cabin glasses can be cleaned while the crane is in operation.
2. No safety hazard is involved.
3. The mechanism is simple and user-friendly.
It is thus possible by way of the present invention to providing a wiper system for
installation on operating cabins in EOT cranes for cleaning deposited dusts from glass pane
of operator's cabin by the operator himself while the crane is in operation, which is simple,
yet effective and reliable for safe operation of the crane in dusty shopfloor such as in steel
melting shop avoiding downtime of crane or hindrance to shopfloor activity.

We Claim:
1. A wiper system for cleaning dust deposit on the cabin glass of operating cabin in EOT
cranes, comprising
a wiper arm mounted on cabin wall with a wiper shoe attached to it comprising of
shoe with felt wiper
an operating handle operatively connected to said wiper arm adapted to provide a
swinging motion to said wiper arm from within the operators cabin.
2. A wiper system as claimed in claim 1, wherein said operating handle is placed at a
convenient place inside cabin and is easily approached by the operator.
3. A wiper system as claimed in anyone of claims 1 or 2, comprising spring means
adapted to maintain the wiper shoe in intimate contact with the cabin glass to effect
desired wiping action.
4. A wiper system as claimed in anyone of claims 1 to 3,comprising adjusting nuts for
adjusting desired pressure of wiper on the glass.
5. A wiper system as claimed in anyone of claims 1 or 4, comprising a counterweight
means to balance wiper arm and shoe.
6. A wiper system as claimed in anyone of claims 1 or 5, which is adapted to clean dust
on cabin glass as and when needed when the crane is in operation.
7. A wiper system as claimed in anyone of claims 1 or 6 wherein said wiper shoe
comprises a metallic shoe housing said felt wiper.

ABSTRACT

The present invention relates to a wiper system for installation on the wall of operating
cabins in EOT cranes adapted to clean dust deposited on the cabin glass of operating cabin
in EOT cranes. More particularly, the present invention is directed to providing a wiper
system for cleaning glass pane of operator's cabin of an EOT crane wherein the operator
himself can clean the glasses with a wiper as and when required while working by simply
operating a handle from within the cabin while the crane is in operation to ensure clear
visibility in a quick, simple and safe manner avoiding downtime of crane or hindrance to
shopfloor activity.