U.S. patent number 3,831,792 [Application Number 05/325,632] was granted by the patent office on 1974-08-27 for railroad car construction.
This patent grant is currently assigned to Otter Trail Power Company. Invention is credited to Colin C. Eldridge, Tadeusz Katyll, Fred W. Waterman.
United States Patent |
3,831,792 |
Waterman , et al. |
August 27, 1974 |
**Please see images for:
( Certificate of Correction ) ** |
RAILROAD CAR CONSTRUCTION
Abstract
An open top gondola or hopper car construction is provided, the
car having a plurality of hinged cover doors which are lifted to
permit loading as the car is moved continuously along a track. When
the loading of a car is completed, the cover doors are returned to
closed position in which they are latched until the car arrives at
a discharge station where again, with the car moving, the latch is
released and the cover is raised a small amount by springs to
permit unloading of the car as the car is rotated in a rotary
dumper of known construction.
Inventors: |
Waterman; Fred W. (Daly City,
CA), Katyll; Tadeusz (San Francisco, CA), Eldridge; Colin
C. (Menlo Park, CA) |
Assignee: |
Otter Trail Power Company
(Fergus Falls, MN)
|
Family
ID: |
23268730 |
Appl.
No.: |
05/325,632 |
Filed: |
January 22, 1973 |
Current U.S.
Class: |
414/373;
105/377.05 |
Current CPC
Class: |
B61D
39/001 (20130101); B61D 7/30 (20130101) |
Current International
Class: |
B61D
39/00 (20060101); B61D 7/00 (20060101); B61D
7/30 (20060101); B61d 039/00 () |
Field of
Search: |
;105/377,251
;214/42R,63,58,152 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Wood, Jr.; M. Henson
Assistant Examiner: Bertsch; Richard A.
Attorney, Agent or Firm: Eckhoff; Robert H.
Claims
We claim:
1. Means for effecting loading of a material into a rail car as the
car is moved continuously over a track section past a chute
discharging the material into the car, a cover on the car hinged
along one side thereof to one side of the car, a latch on the other
side of the cover and car for holding the cover in closed position
over the car, latch engaging means positioned along side of the
track adjacent the path of movement of said other side of the car
for engaging and releasing the latch as the car moves therepast,
means for raising the cover to a position in which the top of the
car is exposed for filling of the car with the material, the
raising means including an upright mast secured at a lower end
thereof to the cover adjacent said other side thereof and extending
upwardly from the cover and having a rail engaging member at an
upper end thereof extending substantially parallel to the plane of
the cover, and rail means supported adjacent the path of travel of
the car in a position for engaging the underside of the member and
pulling the member upwardly and away from the car first to pull the
cover from a closed position to an open position to permit filling
of the car as the car traverses the track and for thereafter
lowering the cover from its open position to a closed position in
which position the cover is retained by the latch.
2. In the means of claim 1 wherein the rail means comprises a pair
of spaced rails which extend over the track section from a first
position in which the rails extend parallel to the track and are
spaced apart vertically to a second position from which the rails
curve away from the track to a third position in which the rails
extend parallel to the track, the rails changing their relationship
between the second position and the third position from one in
which the rails are spaced apart vertically to one in which the
rails are spaced apart horizontally.
3. In the means of claim 2 wherein the rails extend from the third
position to a fourth position spaced along the track from the third
position, the chute for discharge of the material being at the
fourth position.
4. In the means of claim 3 wherein the rails beyond the fourth
position are provided in a mirror image position of the rail
positions between the first and fourth positions.
5. In the means of claim 4 wherein the rails beyond the fourth
position terminate at a point in advance of that position wherein
the car is in closed position to permit the cover to fall into
closed position to engage the latch.
6. In the means of claim 1, wherein the mast includes a base
secured to an upper surface of the cover and extending
substantially perpendicular to the cover, an inclined midportion
extending angularly upwardly from the base, and said member
connected to the upper end of the inclined midportion.
7. In the means of claim 6, wherein the member comprises a roller
mounted for rotation about an axis substantially parallel to the
plane of the cover.
8. In the means of claim 1, wherein there are a plurality of covers
on each car, each cover constructed to cover only a portion of the
length of the open top of the car, said plurality of covers
arranged end-to-end from one end of the car to the other end
thereof and adapted to selectively expose and cover substantially
the entire open top of the car.
Description
BACKGROUND OF THE INVENTION
Heretofore most covered rail cars were loaded through holes in the
covers and unloaded by being either tilted or through assorted
bottom discharge systems. Such systems are not suitable for loading
a car without stopping the entire train. The present invention
makes it possible to load a train of cars without stopping the
train and to close adequately both loaded and empty cars to weather
conditions.
SUMMARY OF THE INVENTION
The main purpose of this invention is to provide for automatic
opening and closing of roof segments on top of a moving rail car
during loading and unloading operations.
Additionally, this invention allows the use of roof segments on top
of a rail car which prevents rain and snow from entering the car to
freeze and cause unloading difficulties. In addition, the roof
segments prevent dust from blowing out of the car.
Another object of this invention is to eliminate the need for
manual opening and closing of roof segments during loading
operations and obviate resulting schedule delays.
Still another purpose of this invention is a system which will
allow cars to be emptied by a rotary car dumper.
Other objects of this invention will become apparent upon an
understanding of the following description of the preferred
embodiment of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view showing a gondola car having several
covers each of which is raised to permit loading while the car is
moved along a track.
FIG. 2 comprises three front views of a rail car showing the cover
being moved from a closed position to an open position for loading,
these being respectively designated as A, B and C.
FIG. 3 is a plan view showing how a latch holding the cover in
closed position is released.
FIG. 4 is a side elevation of a portion of the car showing the
latch structure.
FIG. 5 is a section taken along the line 5--5 in FIG. 3.
FIG. 6 is a section taken along the line 6--6 in FIG. 5, showing
the latch mechanism and means for releasing the latch.
FIG. 7 is a view taken along the line 7--7 in FIG. 4 showing the
mast which is attached to the top of the cover and its relation to
the spaced rails for effecting movement of the cover.
FIG. 8 is a section taken along the line 8--8 in FIG. 3 showing the
hinge for the cover.
FIG. 9 is a plan view showing the relation between the spaced rails
for moving the cover from closed to open position and the relation
of these to the railroad track.
FIG. 10 is a side elevation of the spaced rails which effect the
movement of the cover and the supports for the rails.
FIGS. 9 and 10 show only that portion of the rails which effect the
movement of the cover from closed to open position, the rails
continue so that the cover is moved from open to closed position,
in this section the rails being a mirror image of the showings of
FIGS. 9 and 10. In these views, the overall length of the scroll
rails 60 and 65 has been compressed by approximately one-fourth to
facilitate showing of these figures.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIG. 1, I have shown railroad track 20 and 21 with a
gondola car 22 being moved along the track continuously. In
practice a group of cars are attached together by coupling means 23
at each end of the cars to make up a train which is moved past the
loading chute 24 which discharges a fluent solid material from a
hopper (not shown).
The car shown in FIG. 1 has five roof segments but more or less
than this number can be utilized. Each cover 27 is hinged by two
hinges, generally indicated at 28, provided adjacent opposite ends
of each cover and on one side of the car. Details of the hinge are
shown in FIG. 8.
Each cover is maintained in a closed position during transit of the
train by a latch, generally indicated at 31, including a recessed
member 32 engaged with a rod 33 extending between spaced ears 34
attached to an angle iron 36 fastened to the upper outer edge of
the car. Latch 31 is supported for pivotal movement on pin 37
extending between ears 38 attached to the underside of the angle
iron 36. The latch includes a depending portion 39 which is engaged
with a leaf spring 41 secured to the side of the car and which
urges the latch member into latching position. The extending end 42
of the latch member is engaged with a horizontally extending
release member 43 which is suitably supported from an inverted
U-shaped frame 72A extending over the track 20 on each side thereof
and adjacent the side of the car adjacent to a first position 51 to
move the latch counterclockwise in FIG. 6 and so release the latch.
Several spring means 35 are provided (FIGS. 5 and 6) so that, upon
the release of the latch, the cover moves upward and is free of the
latch.
To effect the lifting of each cover from a position in which the
cover is closed to a position in which the cover is in an open
position, I provide a mast, generally indicated at 61, on each
cover, the mast including a base member 62 attached to the cover
and having an arcuately formed portion 63 extending upwardly and
terminating in a roller support 64 which extends horizontally.
Roller 66 is mounted on the roller support 64 on bearings 67.
To effect the movement of the cover, I provide in suitable relation
to the track 21 a pair of scroll rails 60 and 65 which the roller
66 engages to the spaced rails at position 51 whereat the spaced
rails are in a position substantially over track 20. The rails are
supported by a series of spaced supports 72 and which are provided
in such relation to tracks 20 and 21 that movement of the cover by
the spaced rails is effected as the train traverses the tracks 20
and 21. Thus the spaced rails extend over the track from the first
position 61 in which the rails extend parallel to the track and are
spaced apart vertically. The rails curve away from the track as at
the second position 52 to a third position 53 in which the rails
extend parallel to the track. The rails change their spaced
relationship between the second position and the third position
from one in which the rails are spaced apart vertically to one in
which the rails are spaced apart horizontally. This changing in the
relation of the rails is shown in FIGS. 2A, B and C.
The rails extend from the third position 53 to a fourth position 54
corresponding to the location of the chute 24 for filling up each
car as it moves along tracks 20 and 21. Beyond the fourth position,
the tracks are provided in a mirror image of the track between the
first and the fourth positions so that each cover is gradually
lowered and is released to drop into a position in which the latch
31 is engaged by the rod 33 and the cover is secured in latched
position so that the contents of the car are protected against
wind, rain and snow during movement of the train to a point whereat
the contents of the car are discharged.
* * * * *