U.S. patent number 3,583,748 [Application Number 04/856,280] was granted by the patent office on 1971-06-08 for laundry hopper.
This patent grant is currently assigned to Slings Inc.. Invention is credited to Jason S. Arndt.
United States Patent |
3,583,748 |
Arndt |
June 8, 1971 |
LAUNDRY HOPPER
Abstract
A partially collapsible laundry hopper having top and bottom
frames defining the inlet and outlet thereof respectively, and a
flexible chute and a plurality of extensible supports extending
longitudinally between said top and bottom frames, said supports
being of a length less than said chute. The hopper also has a pair
of downwardly and outwardly opening doors adapted to be
sequentially closed across said hopper outlet and latch means for
releasably securing said doors in their closed position.
Inventors: |
Arndt; Jason S. (Brooklyn,
NY) |
Assignee: |
Slings Inc. (Brooklyn,
NY)
|
Family
ID: |
25323237 |
Appl.
No.: |
04/856,280 |
Filed: |
September 9, 1969 |
Current U.S.
Class: |
294/68.24;
193/25C; 220/9.2; 294/68.1 |
Current CPC
Class: |
D06F
95/004 (20130101) |
Current International
Class: |
D06F
95/00 (20060101); B65d 051/00 () |
Field of
Search: |
;150/48,49,50 ;294/71
;193/25 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Nielsen; Andres H.
Claims
What I claim is:
1. A laundry hopper comprising a top frame defining the inlet to
said hopper; a bottom frame defining the outlet thereof; a flexible
chute extending longitudinally between and secured to said top and
bottom frames; downwardly opening door means hingedly mounted on
said bottom frame for closing said hopper outlet; latch means for
releasably retaining said door means in its closed position; and a
plurality of extensible supports, of a length less than the length
of said chute, extending between said top and bottom frames,
whereby said laundry hopper is partially collapsed when empty while
being extendable to its full length when filled.
2. A laundry hopper as recited in claim 1, including suspension
means secured to said top frame, whereby said hopper may be
suspended from a conveyor belt.
3. A laundry hopper as recited in claim 1, wherein a portion of
said chute is constricted to facilitate the partial collapse of
said chute and hopper when empty.
4. A laundry hopper as recited in claim 1, wherein said door means
includes first and second downwardly and outwardly opening doors,
said first door having a portion extending beneath and supporting
said second door when said doors are closed, said latch means
retaining said first door in its closed position.
5. A laundry hopper as recited in claim 4, including means for
sequentially closing first said second door and then said first
door.
6. A laundry hopper as recited in claim 5, wherein said closing
means includes first pulley means rotatably mounted on said first
door, second pulley means rotatably mounted on said second door,
third and fourth pulley means rotatably mounted on said bottom
frame and a drawstring secured at one end to said bottom frame and
extending along its length about first said first pulley means,
then said third pulley means, then said second pulley means, and
lastly said fourth pulley means, said closing means being operative
by pulling on the end of said drawstring extending from said fourth
pulley means.
7. A laundry hopper as recited in claim 5, wherein said latch means
automatically retains said first door when said first door is
brought into engagement therewith by said closing means, and
includes a release lever operative, when displaced, to release said
first door, said hopper including a second drawstring operatively
secured to said release lever for remote operation thereof.
8. A laundry hopper comprising a top frame defining the inlet to
said hopper; a bottom frame defining the outlet thereof; a chute
extending longitudinally between and secured to said top and bottom
frames; first and second downwardly and outwardly opening doors
hingedly mounted on said bottom frame for closing said hopper
outlet, said first door extending beneath and supporting said
second door when said doors are closed; latch means adapted to
releasably secure said first door in its closed position; and
closing means for sequentially closing first said second door and
then said first door.
9. A laundry hopper as recited in claim 8, wherein said closing
means includes first pulley means rotatably mounted on said first
door, second pulley means rotatably mounted on said second door,
third and fourth pulley means rotatably mounted on said bottom
frame and a drawstring secured at one end to said bottom frame and
extending along its length about first said first pulley means,
then said third pulley means, then said second pulley means, and
lastly said fourth pulley means, said closing means being operative
by pulling on the end of said drawstring extending from said fourth
pulley means.
10. A laundry hopper as recited in claim 8, wherein said latch
means automatically retains said first door when said first door is
brought into engagement therewith by said closing means, and
includes a release lever, operative when displaced, to release said
first door.
Description
BACKGROUND OF THE INVENTION
This invention relates generally to laundry hoppers utilized in
connection with top-loading industrial washing machines. Where a
laundry plant is located in a multistory building, the plant is
generally provided with a fixed laundry chute disposed above each
washing machine and having its input in the floor above said
machine. However, this arrangement is impossible in a single story
laundry plant, and might not be adopted even in multistory plants.
In the alternative, movable laundry hoppers are generally suspended
from a conveyor belt and carried from a loading station to a
position above the washing machine, emptied into said machine, and
carried by said conveyor belt back to said loading position. One
disadvantage of the known conveyor-carried laundry hoppers is the
fact that they remain extended to their full length when empty and
therefore occupy a great deal of space which could be otherwise
utilized. A further disadvantage of the known systems is the lack
of a simple and efficient releasing and closing mechanism for the
bottom door defining the outlet end of said hoppers.
SUMMARY OF THE INVENTION
Generally speaking, in accordance with the invention, a laundry
hopper for transporting laundry from a loading station to a
top-loading washing machine is provided which includes top and
bottom frames defining the inlet and outlet thereof respectively,
and a flexible chute and a plurality of extensible supports
extending between said top and bottom frames, said extensible
supports being of a length less than the length of said chute and
being extensible at least to the length of said chute. The laundry
hopper is partially collapsed, when empty, by said extensible
uprights while being extendable to its full length when filled.
The laundry hopper is also provided with first and second
downwardly and outwardly opening doors hingedly mounted on the
bottom frame for closing the hopper outlet. The first door extends
beneath and supports the second door when the doors are closed and
latch means are provided for releasably securing the first door in
its closed position. Closing means, consisting of a drawstring and
a plurality of pulleys, is also provided for sequentially closing
first said second door and then said first door.
Accordingly, it is an object of this invention to provide a laundry
hopper which may be suspended from a conveyor belt and which is
automatically partially collapsed when emptied.
Another object of the invention is to provide closing and opening
mechanisms for the doors of a laundry hopper which are simple in
construction and readily assembled and operated.
A further object of the invention is to provide a laundry hopper
particularly adapted for use in conjunction with commercial
top-loading washing machines in single story laundry plants.
Still other objects and advantages of the invention will in part be
obvious and will in part be apparent from the specification.
The invention accordingly comprises the features of construction,
combination of elements, and arrangement of parts which will be
exemplified in the construction hereinafter set forth, and the
scope of the invention will be indicated in the claims.
BRIEF DESCRIPTION OF THE DRAWINGS
For a fuller understanding of the invention, reference is had to
the following description taken in connection with the accompanying
drawings, in which:
FIG. 1 is a perspective view of the laundry hopper in accordance
with the invention.
FIG. 2 is a side elevation of the laundry hopper of FIG. 1 disposed
with the doors in the open position; and
FIG. 3 is a side elevational view of the laundry hopper of FIG. 1
when loaded, with the central portion cut away, and with one door
thereof shown in phantom lines in the open position.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to FIG. 1, the laundry hopper 10 shown therein
includes a top frame 12 and a bottom frame 14. Each of said frames
is rectangular and preferably formed from four L-shaped bars welded
together at their ends. Extending between said top and bottom
frames is chute 16 formed from a canvas or other flexible material.
The chute is folded over the top surface of top frame 12 and
secured thereto by means of four bars 18 and fasteners 20. In like
manner, said chute extends under bottom frame 14 and is secured
thereto by four bars 22 and fasteners 24. The chute is provided
with a constricted area 26 adjacent its top to facilitate the
partial collapse thereof as described below. The chute tapers
outwardly from said constricted area to its full width at said top
and bottom frames.
Welded to opposed side edges of top frame 12 are channel-shaped
bars 28. Upstanding from bars 28 and secured thereto are hooks 30
by means of which the hopper may be suspended from the lower run of
an overhead conveyor belt.
Plates 32 are welded to each corner of top frame 12 and extend
downwardly therefrom. Each of said plates is formed with an
aperture 34 in the lower portion thereof. In like manner, plates 36
are welded to each corner of bottom frame 14. Each of the latter
plates extends upwardly from said bottom frame and is also formed
with an aperture 38 extending through the upper portion thereof.
Extending between top frame 12 and bottom frame 14 are four
extensible supports 40. Each of said extensible supports is secured
at its upper end to one of said corner plates 32 by means of
interlocking rings 42 which pass through apertures 34, and at its
lower end to the corresponding corner plate 36 by means of like
interlocking rings which pass through apertures 38. Said extensible
supports are formed from longitudinally extending strips of a
resilient material such as rubber and each is of a length less than
the length of chute 16, whereby hopper 10 is partially collapsed
when empty. When loaded, the extensible supports expand to permit
chute 16 to extend to its full length.
A pair of downwardly and outwardly opening doors 44 and 46 are
provided to retain the laundry within chute 16 when closed. Said
doors are hingedly mounted on bottom frame 14 by means of corner
plates 36 which also extend downwardly from said bottom frame and
bolts 48. Each of said doors preferably consists of only a metal
frame as shown in FIG. 3, the open portion of each door being
closed by a downwardly extending wing 50 of chute 16. Each of said
wings 50 is secured at its outer edge to the leading edge of its
respective door by bars 52 and fasteners 54, as shown in FIG. 2.
Doors 44 and 46 could be provided with separate panels secured to
and closing the frame thereof, in which case wings 50 would be
unnecessary. As best shown in FIG. 2, a block 56 extends downwardly
from bottom frame 14 and cooperates with a second block 58 secured
to the side of door 46 to stop the upward movement of said door.
Plates 60 welded to the leading edge of door 44 and extending
outwardly therefrom are adapted to extend beneath and support door
46 when said doors are closed.
Latch means 62 is provided for releasably retaining doors 44 and 46
in their closed position. To this end, finger 64 is secured to and
extends outwardly from the side of door 44. Latch means 62 is
provided with a notch 66 adapted to receive finger 64 and a spring
loaded lock member 68 which automatically closes to retain finger
64 and therefore doors 44 and 46 when said finger engages heel 70
of said lock member. Release lever 72, when displaced, displaces
lock member 68 to its open position, thereby releasing finger 64
and permitting the doors 44 and 46 to open. Release lever 72 is
operated by means of draw string 74 which is tied at one end to
said release lever and passes through staple 76. The other end of
drawstring 74 is tied to pull ring 78 and a further ring 80 is
secured intermediate its length to prevent the drawstring from
passing upwardly through said staple.
Door 46 must be closed slightly in advance of door 44 in order to
permit the former to clear plates 60 extending from the latter.
Accordingly, the means provided for closing doors 44 and 46, namely
drawstring 82 and associated pulleys is specifically adapted to
sequentially close first door 46 and then door 44. In this manner,
plates 60 support door 46 in the closed position, door 44 being in
turn retained and supported by latch means 62.
As shown in FIGS. 1 and 2, aside from drawstring 82, the closing
means includes pulley 84 rotatably mounted on door 44, a pair of
transfer pulleys 85 and 86 mounted on bottom frame 14, pulley 88
mounted on door 46 and pulley 90 also rotatably mounted on bottom
frame 14. Each of said pulleys is provided with a cage 92 to retain
the drawstring therearound and to provide a support for the axles
thereof. Drawstring 82 is tied at one end to staple 76 and extends
along its length about pulley 84, then the pair of transfer pulleys
85 and 86, then pulley 88 and finally pulley 90, from which the
other end of drawstring 82 hangs downwardly. Pull ring 94 is tied
to the latter end of drawstring 82 and a further ring 86 is secured
to said drawstring between pull ring 94 and pulley 90 to prevent
said drawstring from passing upwardly past the latter pulley.
In operation, hopper 10 is suspended from the lower run of a
conveyor belt by means of hooks 30 and, with doors 44 and 46
closed, is loaded with laundry through the inlet end thereof
defined by top frame 12. When loaded, extensible supports 40 permit
the hopper to extend to its full length, as determined by the
length of chute 16. The loaded hopper 10, as shown in FIG. 3, is
then carried to a position above a top-loading washing machine,
with bottom frame 14 defining the outlet of said hopper in
registration with the inlet to said machine. Pull ring 78 secured
to drawstring 74 is then pulled, either by hand or by means of a
hooked pole to displace release lever 72 to open latch means 62.
The weight of the laundry then forces doors 44 and 46 open,
permitting said laundry to pass out of hopper 10 and into said
washing machine. The hopper is automatically partially collapsed by
means of resilient supports 40 which contract upon the removal of
the weight of the laundry to reduce their length. The constriction
26 in chute 16 facilitates the telescoping of said chute as bottom
frame 14 is raised by supports 40 to effect the partial collapse of
the hopper. FIG. 2 shows hopper 10 disposed in this position.
The doors 44 and 46 can be readily closed by pulling on pull ring
94, either by hand or by means of a hooked pole. The drawstring 82
secured to said pull ring and the pulleys associated therewith are
specifically adapted to sequentially close first door 46 and then
door 44 so that the former may be supported by plates 60 extending
from the latter. When finger 64 engages heel 70 of lock member 68,
said lock member is displaced to retain the doors in the closed
position. The hopper is now carried by the conveyor back to the
loading position for recycling.
Because it is partially collapsed, the space occupied by the empty
hoppers is substantially reduced as compared to the known
arrangements. Further, the construction of the doors of the hopper
and the arrangement for closing and releasing same is extremely
simple, the hopper according to the invention being inexpensive to
manufacture, and readily operated. If the partially collapsible
feature of the laundry chute according to the invention is not
desired, resilient supports 40 may be dispensed with completely,
provided chute 16 is of a sufficiently strong material to bear the
weight of bottom frame 14, doors 44 and 46 and the laundry. In the
alternative, inflexible supports may be substituted for resilient
supports 40, in which case the supports would preferably be of a
length substantially equal to the length of chute 16. Further, the
latch means need not be of the form shown in the drawings and
described herein, but rather, any type of latch adapted to
releasably retain doors 44 and 46 may be utilized.
It will thus be seen that the objects set forth above, among those
made apparent from the preceding description, are efficiently
attained and, since certain changes may be made in the above
construction without departing from the spirit and scope of the
invention, it is intended that all matter contained in the above
description or shown in the accompanying drawings shall be
interpreted as illustrative and not in a limiting sense.
It is also to be understood that the following claims are intended
to cover all of the generic and specific features of the invention
herein described, and all statements of the scope of the invention
which, as a matter of language, might be said to fall
therebetween.
* * * * *