U.S. patent number 3,857,494 [Application Number 05/379,789] was granted by the patent office on 1974-12-31 for modular rack assembly.
This patent grant is currently assigned to Rockwell International Corporation. Invention is credited to Emidio D. Giardini.
United States Patent |
3,857,494 |
Giardini |
December 31, 1974 |
MODULAR RACK ASSEMBLY
Abstract
A modular rack assembly for storing and shipping massive metal
articles which includes a rigid rectangular base having a
vertically disposed leg fixed at each corner and a post member
extending vertically above and supported by each leg. The legs and
post members include means providing a pair of open, interfacing
vertically aligned grooves at each side of the rack assembly for
slidably receiving and laterally supporting the opposite ends of
side members disposed on edge along each side of the rack assembly
to provide a load bearing side wall at each side of the rack
assembly.
Inventors: |
Giardini; Emidio D. (New
Castle, PA) |
Assignee: |
Rockwell International
Corporation (Pittsburgh, PA)
|
Family
ID: |
23498690 |
Appl.
No.: |
05/379,789 |
Filed: |
July 16, 1973 |
Current U.S.
Class: |
211/194;
108/53.5; 108/55.1 |
Current CPC
Class: |
B65D
19/08 (20130101); A47B 47/05 (20130101); B65D
2519/00298 (20130101); B65D 2519/00582 (20130101); B65D
2519/00437 (20130101); B65D 2519/00024 (20130101); B65D
2519/00169 (20130101); B65D 2519/00273 (20130101); B65D
2519/00233 (20130101); B65D 2519/00532 (20130101); B65D
2519/00676 (20130101); B65D 2519/00129 (20130101); B65D
2519/00059 (20130101); B65D 2519/0097 (20130101); B65D
2519/00995 (20130101); B65D 2519/00164 (20130101); B65D
2519/00333 (20130101) |
Current International
Class: |
A47B
47/00 (20060101); A47B 47/05 (20060101); B65D
19/02 (20060101); B65D 19/08 (20060101); A47f
005/10 () |
Field of
Search: |
;211/177,178R,148
;108/53,56,55,91 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Britts; Ramon S.
Claims
What is claimed and described to be secured by letters patent
is:
1. A modular rack assembly for storing and shipping massive metal
articles comprising,
a rectangular shaped rigid metal base including a pair of
oppositely disposed side rails, a pair of oppositely disposed end
rails, and a vertically disposed leg member fixed at each corner of
said base,
each of said leg members including means providing a vertically
extending leg groove open in a direction facing the opposite end of
said base and in substantial vertical alignment with a leg groove
at the opposite end of said base,
an upstanding metal post member at each corner of said rack
assembly and means engaging each of said post members with the leg
member at that corner to support said post members above said leg
members,
each of said post members including means providing a vertically
extending groove open in a direction facing the opposite end of
said rack assembly and in substantial vertical alignment with the
leg groove therebelow to provide a pair of open interfacing
vertically aligned grooves extending along a substantial length of
said leg members and post members at each side of the rack
assembly, and
a plurality of wooden boards disposed along each side of said rack
assembly to provide a load bearing wall at each respective side
thereof, the plurality of boards at each respective side being
superimposed one on top of another with each successive board
supported on its edge above a preceding board and with the opposite
ends of each board laterally supported by the means providing said
pair of grooves at that side of said rack assembly.
2. A modular metal rack assembly for storing and shipping massive
metal articles comprising,
a rectangular shaped base including a pair of oppositely disposed
horizontally extending side rails, a pair of oppositely disposed
horizontally extending end rails, and a vertically disposed leg
member fixed at each corner of said base and extending above said
side and end rails,
each of said leg members including means providing a vertically
extending leg groove open in a direction facing the opposite end of
said base and in substantial vertical alignment with a leg groove
at the opposite end of said base,
an upstanding post member at each corner of said rack and means
engaging each of said post members with the leg member at that
corner to support said post members above said leg members,
each of said post members including means providing a vertically
extending groove open in a direction facing the opposite end of
said rack assembly and in substantial vertical alignment with the
leg groove provided by the leg member supporting that post member
to provide a vertically extending continuation of each of said leg
grooves, said leg grooves and said continuations thereby providing
a pair of open interfacing vertically aligned grooves at each side
of the rack assembly whereby at least one side member may be
disposed on its edge along each side of said rack assembly with the
opposite ends of each side member slidably received in said pair of
grooves provided at that side of the rack assembly and laterally
supported by said means providing said grooves.
3. The modular metal rack assembly defined by claim 2 wherein the
pair of upstanding post members provided at each end of said rack
are fixed together in parallel spaced relation in alignment with
the leg members provided at each end of said base and a channel
shaped metal element is fixed to each respective post member along
a substantial length thereof to provide said vertically extending
groove.
4. The modular metal rack assembly defined by claim 3 wherein a
channel shaped metal element is fixed to each leg member along a
substantial length thereof to provide a vertically extending leg
groove of substantially rectangular cross section.
5. The modular metal rack assembly defined by claim 2 wherein a
plurality of side members are disposed along each side of said rack
assembly to provide a pair of oppositely disposed load bearing side
walls, the side members at each respective side of the rack
assembly being superimposed one on top of another with each
successive side member supported on its edge above the preceding
side member and with the opposite ends of each side member
laterally supported by the means providing said pair of open
interfacing vertically aligned grooves at that side of said rack
assembly.
6. The modular rack assembly defined by claim 5 wherein the
plurality of side members provided along each side of said rack
assembly supports at least one massive metal article disposed
horizontally thereacross and at least one additional side member is
disposed on edge along each side of said rack assembly, the lower
edge of each said additional side member being supported by said
massive metal article and the opposite ends of each said additional
side member being laterally supported by the means providing said
pair of open interfacing vertically aligned grooves at that side of
said rack assembly.
7. The modular rack assembly of claim 5 wherein said side members
are comprised of a plurality of wooden boards disposed on edge to
support a heavy durable metal article without damaging the surface
thereof.
8. A modular rack assembly for storing and shipping a plurality of
massive metal articles comprising,
a rectangular shaped rigid metal base including a pair of
oppositely disposed horizontally extending side rails, a pair of
oppositely disposed horizontally extending end rails, and a
vertically disposed leg member fixed at each corner of said base
and extending above said rails,
a pair of rectangular shaped metal end frames, each end frame
including a pair of post members fixed together in parallel spaced
relation and each post member including means providing a
vertically extending groove open in a direction facing the opposite
end of said base,
the upper ends of said leg members and the lower ends of said post
members being respectively provided with first and second means for
slidably receiving said end of one of said members within said end
of the other of said members in telescopic relation,
said post members of each end frame being spaced to vertically
align said post members of each end frame with a pair of said leg
members at opposite ends of said base and to align each of the
grooves included with the post members of one end frame with one of
the grooves included with the post members of the other end frame
to provide a pair of open interfacing vertically aligned grooves at
each side of the rack assembly when the post members of each end
frame are telescopically engaged with a pair of leg members at
opposite ends of said base, and
at least one side member disposed along each side of the rack
assembly, the opposite ends of each side member being slidably
received in said pair of grooves provided at that side of the rack
assembly and being laterally supported by said means providing said
pair of grooves.
9. The modular rack assembly of claim 8 wherein said means
providing said vertically extending groove to each of said post
members comprises a channel shaped element fixed to each respective
post member and extending along a substantial length thereof.
10. The modular rack assembly defined in claim 8 wherein each of
said leg members include means providing a vertically extending leg
groove open in a direction facing the opposite end of said base and
said means providing each of said leg grooves is disposed in
vertical alignment with the means providing said vertically
extending groove to the post member telescopically engaged with
that respective leg member to provide a pair of open interfacing
leg grooves at each side of the base in substantial vertical
alignment with the pair of grooves provided at that side of the
rack assembly by said post members.
11. The modular rack assembly defined by claim 10 wherein said
means providing said vertically extending groove to each of said
post members and said means providing a vertically extending leg
groove to each of said leg members are comprised of a formed metal
element fixed to each respective post member or leg member along a
substantial length thereof to provide a vertically extending groove
of substantially rectangular cross section.
12. The modular rack assembly defined by claim 8 wherein said base
rails and leg members are hollow metal tubular members of
rectangular cross section fixed together at each corner of said
base and reinforced at each corner by a formed gusset plate two
intersecting edges of which are respectively welded to the outer
surface of a side rail and the side surface of a leg member at that
corner of said base, that portion of the gusset plate which extends
toward the leg member at the opposite end of said base being formed
outwardly to space the interior surface of said gusset plate
outward of said side surface of said leg member, and
said post members of said end frames are formed from the same
tubular stock as said leg members and are of a length less than the
length of said side rails to enable said end frames to be stored
horizontally one on top of the other on said base with said post
members supported by said side rails between the leg members at
each end of said base and restrained from substantial lateral
movement by said outwardly formed gusset plates which provide
lateral clearance at each side of the rack assembly.
13. The modular rack assembly defined by claim 12 wherein each of
the tubular post members are reinforced by a metal band positioned
around and fixed to the external surface thereof and said gusset
plates are formed to space their respective interior surfaces a
sufficient distance outward from the side surface of its respective
leg member to accommodate the thickness of said band when said end
frames are stored between said gusset plates.
Description
BACKGROUND OF THE INVENTION
This invention relates to a novel modular rack assembly for storing
and shipping articles of manufacture. More specifically, this
invention relates to a knock-down, self-storing, returnable type of
modular rack assembly which is particularly suitable for storing
and shipping massive durable articles such as automotive axles.
The use of wooden pallets and modular rack assemblies as some of
the more sophisticated storage and shipping units have become
known, is well known in the field of material handling. Such units
have enjoyed great success in providing for unitized storage and
transportation of many types of products because they can be easily
moved by modern material handling equipment and can be stored in a
manner which takes maximum advantage of the space available in
warehouse facilities and transportation vehicles. The modular unit
concept has become so well accepted that many types of relatively
expensive modular rack assemblies which can be stacked on top of
similar racks for storing and shipping articles of manufacture and
then partly disassembled or knocked-down to provide a returnable
unit of considerably less volume are presently in use.
Many of the prior art rack assemblies incorporate a rectangular
base member and a pair of end frames which are slidably received in
upright position in the leg members disposed at opposite ends of
the base to provide a modular unit for shipping and storing
articles. After the articles have been delivered, some of these
rack assemblies can be partly disassembled by removing the end
frames and stacking them on the base to provide a relatively
compact knocked-down unit which is then returned to the shipper or
manufacturer. Several such modular rack assemblies are disclosed in
U.S. Patent No. 2,956,763, issued Oct. 18, 1960; U.S. Pat. No.
3,499,398, issued Mar. 10, 1970 and U.S. Pat. No. 3,565,018 issued
Feb. 23, 1971.
In many instances such modular rack assemblies have provided
substantial economic advantages over the wooden pallets, packing
boxes or crates in which many articles of commerce were previously
stored and shipped. Unfortunately such advantages have not been
effected in all areas of manufacture and there are many areas in
which wooden crates or other wooden structures are still employed
because the heretofore known modular rack assemblies have been
inadequate for one reason or another.
One such area involves the storing and shipping of massive products
such as automotive axles. Notwithstanding many advances in material
handling techniques and equipment, many such products are shipped
and stored on wooden frame structures because the heretofore known
modular rack assemblies have either lacked sufficient strength to
adequately support a number of such articles or, when fabricated
from metal members strong enough to support such a load, the metal
supporting members failed to provide adequate dunnage to prevent
damage to the surfaces of the metal articles. Such articles have
traditionally been shipped in boxes or crates constructed of
hardwood. The wooden supporting members of such boxes or crates
have traditionally provided sufficient resiliency to cushion the
load supported thereby and restrain lateral displacement of the
article. A modular rack assembly incorporating metal supporting
members will not cushion the articles supported thereby and may
even induce surface damage. Moreover, the relatively low
coefficient of friction between a metal supporting member and a
metal article supported thereby is such that it will not
effectively restrain lateral movement of the metal article in the
same manner that a wooden supporting member will.
It is therefore an important object of this invention to provide a
modular rack assembly which incorporates the material handling
advantages of a returnable metal rack assembly and the load bearing
supporting characteristics of hardwood supporting members.
It is also an object of this invention to provide a returnable,
modular rack assembly employing wooden side members which can be
quickly and easily assembled and disassembled.
It is a further object of this invention to provide a returnable,
modular metal rack assembly employing wooden load bearing side
walls which can be quickly assembled and disassembled without the
necessity of using any fastening elements or tools.
Another object of this invention is to provide a modular storage
rack incorporating wooden load bearing side walls and which is
collapsible and permits storage of the disassembled parts in a
minimum of space.
A still further object of this invention is to provide a modular
storage rack assembly incorporating wooden load bearing side walls
arranged to support a plurality of massive metal articles disposed
horizontally across the load bearing walls at different horizontal
levels.
SUMMARY OF THE INVENTION
The novel metal rack assembly of this invention attains these and
other objects through the combination of a rigid rectangular base
member having a vertically disposed leg fixed at each corner
thereof, a post member extending vertically above and supported by
each leg, and the provision of a pair of open, interfacing
vertically aligned grooves associated with the pair of post members
and legs at each side of the rack assembly to slidably receive and
laterally support the opposite ends of side members disposed on
edge along each side of the rack assembly. In one embodiment of the
invention, separate groove means are provided to each leg and post
member, the grooves provided to each member being arranged to be in
vertical alignment when each post member is supported by its
respective leg, and a number of hardwood boards are disposed on
their edges on each side of the rack assembly with the boards at
each side being superimposed one on top of the other with their
opposite ends laterally supported by the pair of vertically
extending grooves provided at that side of the rack assembly.
Other objects, features and advantages of the invention will become
apparent from the following description, taken in conjunction with
the accompanying drawings.
DESCRIPTION OF THE DRAWINGS
In the drawings, wherein like reference numerals refer to like
parts:
FIG. 1 is a perspective view of the modular rack assembly of this
invention;
FIG. 2 is a perspective view of the rack assembly of FIG. 1 with
the end frames removed and stacked on the base;
FIG. 3 is an exploded view of the rack assembly of FIG. 1;
FIG. 4 is a plan view of the base of the rack assembly of FIG.
1;
FIG. 5 is a side elevation of the rack base of FIG. 4;
FIG. 6 is an end elevation of the rack base of FIG. 4;
FIG. 7 is an end elevation showing one of the end frames of the
rack assembly of FIG. 1; and
FIG. 8 is a plan view of the end frame of FIG. 7.
DESCRIPTION OF AN EMBODIMENT OF THE INVENTION
Referring now to the drawings, and particularly to FIGS. 1-3, the
modular rack assembly 10 of this invention generally includes a
base 11, a pair of oppositely disposed end frames 40, 41 and a
plurality of side members 50 disposed along the opposite sides of
the rack assembly.
The base 11 is rectangular in shape and includes a pair of
oppositely disposed horizontally extending side rails 12, 13, a
pair of oppositely disposed horizontally extending end rails 14,
15, and a vertically disposed leg member 16, 17, 18 and 19. The leg
members 16-19, side rails 12, 13, and end rails 14 and 15 are
preferably provided by appropriate lengths of hollow steel tubing
of square cross section and each leg member is vertically disposed
at one corner of the base where it is secured, preferably by
welding, to one end rail and one side rail. The base 11 is
structurally reinforced at each corner by a pair of gusset plates
28, 29. The gusset plates 28 are welded to the outer end surfaces
of an end rail and a leg member at each corner of the base 11. The
gusset plates 29 are welded along two intersecting edge surfaces
30, 30' to the side surface of a leg member and the outer surface
of a side rail at each corner of the base 11. The portion of the
gusset plate 29 intermediate the edges 30, 30' and extending toward
the opposite end of the base 11 is formed outwardly from the edges
30, 30' for a purpose which will be described more fully
herebelow.
The base 11 is further reinforced by inboard side members 22
horizontally disposed between the end rails 14 and 15 and cross
supports 23 horizontally disposed between the inboard side members
22 and their respective side rail 12, 13. The upper horizontal
surfaces of the side rails 12, 13, inboard side members 22, cross
supports 23 and end rails 14, 15 are preferably disposed in a
common horizontal plane with the leg members 16, 17, 18 and 19 and
gusset plates 28, 29 extending vertically a substantial distance
above that plane.
The lower ends of each of the leg members 16-19 are provided with a
rectangular truncated insert 20 press fitted therein which are
adapted to seat within the upper ends of the leg members of a
similar base 11 or in the upper ends of the end frames of a similar
modular rack assembly 10. The upper end of each leg member 16-19 is
reinforced with a metal band 21 suitably shaped to fit around the
exterior surface of the leg member where it is fixed in place by
welding.
The base 11 is provided at its opposite ends with metal runner bars
or skids 24 extending between the leg members 16, 19 and 17, 18 for
supporting the rack on a floor surface with the lower ends of the
truncated inserts 20 spaced slightly above the supporting surface.
Each runner bar 24 is formed with a substantially flat center
support portion 25 and upwardly directed end portion 26 secured to
the respective end rail 14 or 15 as well as to the inwardly
directed surfaces of the leg members. Vertically disposed
reinforcing angles 27 are secured between the bars 25 and end rails
14 and 15. The angles 27 are suitably spaced from one another to
provide openings for receiving the fork of a conventional lift
truck.
The leg members 16, 17, 18 and 19 are provided with a vertically
disposed channel shaped element 36, 37, 38 and 39 respectively. The
channel elements are preferably formed from a suitably bent metal
plate and each channel element is welded to its respective leg
member along a substantial length thereof to provide a groove of
rectangular cross section associated with each leg member and open
in a direction facing an oppositely disposed channel element at the
opposite end of the base 11. The channel elements are so disposed
that the grooves provided by channel elements 37 and 38
respectively fixed to leg members 17 and 18 are open toward and in
vertical alignment with the grooves provided by the oppositely
disposed channel elements 36 and 39 which are respectively fixed to
leg members 16 and 19. The channel elements 36, 37 provide a pair
of open interfacing vertically aligned grooves at the side of rack
base 11 between the leg members 16 and 17, and the channel elements
38, 39 provide a pair of open interfacing vertically aligned
grooves at the opposite side of the rack base between leg members
18 and 19.
The end frames 40, 41 are each comprised of a pair of upstanding
post members 42, 45, and 43, 44, respectively fixed together in
parallel spaced relation by a pair of horizontally disposed tubular
elements 31, 32. The upstanding post members 42, 43, 44 and 45 are
preferably formed from the same hollow tubular stock as the leg
members 16-19 of the base 11. The lower end of each post member
42-45 is provided with an appropriate length of a hollow tubular
extension 34 slidably received within the post member and
permanently fixed thereto by means of a circular or button type
weld 35 effected through a hole provided near the lower end of the
post member. The upper end of each post member is reinforced by a
metal band 33 formed to fit around the periphery of the post member
and welded thereto.
Each post member 42, 43, 44, 45 is provided with a vertically
disposed, channel shaped element 46, 47, 48, 49, respectively. Each
channel shaped element 46-49 is welded to the inner side of its
respective post member along a substantial length thereof. The
channel elements 46-49 like the channel shaped elements 36-39 are
preferably formed from a suitably bent metal plate to provide each
post member with a vertically extending groove of substantially
rectangular cross section which is open in a direction facing the
opposite end of the rack base 11.
The horizontally disposed cross members 31, 32 are of a length
which will permit the tubular extensions 34 of the post members of
each respective end frame 40, 41 to be slidably received in a pair
of hollow tubular leg members 16, 19, or 17, 18, with the post
members of that end frame supported by that pair of leg members.
The channel members 46, 49 and 47, 48 associated with each
respective end frame 40, 41 are so disposed that the vertically
extending grooves provided thereby will be in vertical alignment
with the grooves provided by the channel element 36, 39 or 37, 38
respectively associated with the leg members 16, 19 and 17, 18 at
opposite ends of the base 11.
With particular reference to the rack assembly 11 as shown in FIG.
1, the vertically extending grooves provided by channel members 46
and 47 associated with the post members supported by legs 16 and 17
are arranged to be in substantial vertical alignment with the
groove means provided by channel members 36 and 37 to conjointly
provide a pair of open interfacing and oppositely disposed grooves
at the side of the rack assembly 10 between the leg members 16 and
17. The grooves provided by channel members 48, 49 associated with
the post members 44, 45 supported by leg members 18 and 19 are
likewise disposed to be in substantial vertical alignment with the
grooves provided by channel elements 38 and 39 to provide a pair of
open interfacing grooves at the side of the rack assembly 11
between leg members 18 and 19.
The two pair of open interfacing vertically aligned grooves
extending along the leg members and post members at each side of
the rack assembly serve to receive and support a number of side
members 50. The side members 50 are preferably formed of hardwood 2
.times. 4's cut to a suitable length to permit the opposite ends
thereof to be slidably received in a pair of the open interfacing
vertically aligned grooves at one side of the rack assembly.
With reference to FIGS. 1 and 3, the rack assembly 10 is assembled
by positioning the hollow tubular extensions 34 of each end frame
40, 41 in a pair of hollow upstanding leg members 16, 19 or 17, 18
at one end of the base 11. A pair of load bearing side walls are
then provided at each side of the rack assembly 10 by disposing an
appropriate number of hardwood side members in the open interfacing
vertically aligned grooves provided at each side of the rack
assembly. Each hardwood side member 50 is disposed on its edge with
its opposite ends laterally supported by the legs of the channel
members providing the pair of vertically aligned grooves at that
side of the rack assembly. The lowermost side member 50 at each
side of the rack assembly is supported by a portion of the end
rails 14, 15 and the cross supports 23 disposed between the side
rails 12, 13 and the inboard side members 22. Each successive
hardwood member 50 is disposed with its lower edge in contact with
and supported by the preceding hardwood side member. The hardwood
side members 50 are thus superimposed one on top of the other to
provide a hardwood side wall at each respective side of the rack
assembly to provide a load bearing, wooden side wall of a height
satisfactory to accommodate the articles of manufacture to be
supported thereby.
In the case of automotive axles such articles of manufacture are
usually about eight foot in length and, although the center section
of an axle may be on the order of about 4 to 8 inches square, the
outer extremities are formed to a complex shape to accept a wheel
assembly. The rack assembly of this invention, although it may be
fabricated with the leg and post members at the corners of a 3 1/2
foot square, is particularly suitable for storing and transporting
massive automotive axle assemblies because of the novel load
bearing, hardwood side wall structure provided by the hardwood side
members 50.
As pointed out previously, the side members 50 may be superimposed
one on top of the other to provide a load bearing side wall section
of any suitable height. With reference to FIG. 1 it will be noted
that the brackets identified by the numerals 52 and 53 designate a
lower load bearing wall section provided by three wooden side
members 50 disposed on edge along each respective side of the rack
assembly 10. The lowermost side member 50 of each wall section 52,
53 is supported by the cross supports 23 and the uppermost side
member 50 of each wall section is disposed with its opposite ends
laterally supported across the telescopic joint between a post
member and a leg member by a portion of the channel member
associated with each respective post and leg member. The lower wall
sections 52, 53 are so disposed to accommodate several axles laid
horizontally thereacross with their relatively complex shaped outer
ends spaced outwardly at each side of the rack assembly 10. After a
first layer of axles has been disposed across the load bearing wall
sections 52, 53, a second wall section identified in FIG. 1 by
bracketed numerals 54, 55, is provided above the first layer of
axles at each side of the rack assembly to provide a second level
wall section at each side of the rack assembly to support another
horizontally disposed layer of axles. The wooden side members 50 of
the second level wall sections 54, 55 are assembled one by one in
superimposed layers with the lowermost wooden side member 50
supported directly on top of the first layer of axles. After the
second wall sections 54, 55 have been built to a suitable height, a
second layer of axles are disposed horizontally across the
uppermost wooden side members 50 of the wall sections 54, 55. The
horizontal rows of axle assemblies are then suitably secured by
conventional metal strapping and the loaded modular rack assembly
is then ready for storage or transportation to some other
location.
The modular rack assemblies are designed to permit them to be
stacked one on top of the other, the truncated inserts 20 provided
at the base of each leg of one rack base 11 being slidably received
within the hollow upper end of a post member reinforced by the
metal bands 33.
Once a shipment has been completed and the axle assemblies have
been removed, the modular rack assembly of this invention can be
readily disassembled for return by removing the wooden side members
50, the end frames 40 and 41 and stacking or nesting the same on
the base 11.
With reference to FIG. 2 the end frames 40, 41 are fabricated to
such dimensions as will permit them to be stacked one on top of the
other along the side rails 12, 13 of the base 11. The post members
42-44 are preferably formed from the same hollow tubular stock
material as the side rails 12, 13 and leg members 16-19. The
laterally disposed tubular elements 31, 32 of each end frame 40, 41
are of such a length as permits the post members associated with
each respective end frame to be vertically aligned with the leg
members at one end of the base 11 and, when disassembled, to be
supported directly above the side rails 12, 13 as shown in FIG. 2.
The length of the post members 42-45 including the hollow tubular
extension members 34 provided at the lower ends thereof is
preferably about 1 inch short of the length of the side rails 12,
13 to permit the post members to be disposed horizontally between
the leg members provided at opposite ends of the base 11.
The gusset plates 29 provided at each end of the side rails 12, 13
are formed outwardly a distance d as best shown in FIGS. 4 and 6 to
provide a slight clearance to permit easy stacking of the post
members 42-45 of the end frames when they are nested on top of the
base 11 as shown in FIG. 2. In the embodiment just described the
distance d is preferably about three-eights inch to accommodate the
one-fourth inch thickness of the metal reinforcing bands 33 and
allow sufficient clearance to easily stack the end frames 40, 41 on
the base 11.
With reference to FIG. 2 the hardwood side members 50, although not
shown, may be horizontally disposed on top of the end frame 40 with
their opposite ends supported by the upper surfaces of post members
42-45 to provide a very compact, knocked-down modular rack which
can be strapped to secure the wooden side members thereto and
returned to the point of origin. The compact, knocked-down modular
rack as shown in FIG. 2 may be stacked on top of another similar
rack base 11 with the truncated inserts 20 provided at the lower
end of each leg member of the rack base 11 slidably received in the
hollow upper ends of the leg members of a similar rack base.
The foregoing has described the provision of a rigid metal rack
assembly incorporating novel means for quickly and easily providing
and disassemblying wooden load bearing side walls without the
necessity of using any fastening elements or tools. As such, this
invention has incorporated a quick and inexpensive means for
providing a rigid, metal modular rack assembly with hardwood load
bearing wall sections to support a number of massive metal articles
of manufacture to take advantage of the supporting characteristics
of wooden frame members and the efficiency of modern material
handling techniques and equipment.
This invention may be embodied in other specific forms without
departing from the spirit or essential characteristics thereof. The
embodiment of this invention described hereinabove is therefore to
be considered in all respects as illustrative and not restrictive,
the scope of the invention being indicated by the appended claims
rather than by the foregoing description and all changes which come
within the meaning and range of equivalency of the claims are
therefore intended to be embraced therein.
* * * * *