US2933193A - Corner lock construction for racks - Google Patents

Corner lock construction for racks Download PDF

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Publication number
US2933193A
US2933193A US621825A US62182556A US2933193A US 2933193 A US2933193 A US 2933193A US 621825 A US621825 A US 621825A US 62182556 A US62182556 A US 62182556A US 2933193 A US2933193 A US 2933193A
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shelf
rack
post
corner
racks
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Expired - Lifetime
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US621825A
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Mattia Andrew D De
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Rolock Inc
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Rolock Inc
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B57/00—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions
    • A47B57/06—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of the shelves
    • A47B57/08—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of the shelves consisting of grooved or notched ledges, uprights or side walls
    • A47B57/10—Cabinets, racks or shelf units, characterised by features for adjusting shelves or partitions with means for adjusting the height of the shelves consisting of grooved or notched ledges, uprights or side walls the grooved or notched parts being the side walls or uprights themselves
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F5/00—Show stands, hangers, or shelves characterised by their constructional features
    • A47F5/10—Adjustable or foldable or dismountable display stands
    • A47F5/13—Adjustable or foldable or dismountable display stands made of tubes or wire

Definitions

  • This invention relates to a multiple level material handling rack of skeleton construction preferably light enough in weight to be portable and having vertically spaced perforate work carrying shelves or trays that permit free access to the workpieces of heat or a fluid processing medium such as will enable the fluid, if a liquid, to drain off readily through the perforations in the shelves.
  • An object of this invention is to provide racks having multiple level perforate shelves or trays so constructed that each shelf, including its wire mesh fabric and supporting frame rungs, can be prefabricated individually by automatic machine processes and used as an interchangeable component in a knockdown type of rack assemblage including upright corner posts.
  • a further object is to enable the corner posts likewise to be manufactured individually as separate pieces and brought independently one by one into separable joinder with the margins or corners of the prefabricated shelves thereby to form a rack of knockdown construction in which selected prefabricated shelves can be supported by the corner posts at selectively spaced heights and can be individually replaced .if damaged or worn out in use while continuing to utilize all of the other parts of the rack.
  • a further object is to avoid dependence solely on unyielding rigidity of joinder of the shelf corners with the They further have the disadvantage of 2,933,193 Patented Apr. 19, 1960 corner posts by employing mechanical locking means of a nature to permit slight relative movement therebetween in the assembled structure.
  • Fig. 1 shows an assembled annealing rack with multi-' and shelves.
  • Fig. 6 is a plan View looking downward on Fig. 5.
  • Fig. 7 shows the use of welding both for holding a mechanical corner locking element in place and if desired for holding the corner posts and shelves in permanently assembled relation independently of the locking element.
  • Fig. 8 shows a means for mechanically interlocking shelf corners to corner posts by distorting the shelf corners making unnecessary the use of a separate part to serve as locking element.
  • Fig. 9 shows a different manner of distorting the shelf corners to accomplish mechanical interlocking thereof with the corner posts.
  • the rack or multiple level tray of Figs. 1 to 4 is shown to comprise supporting corner posts 12 each of which comprises a vertically disposed bar which may be of V- shape, L-shape, U-shape or other arched shape in cross section having two angularly related side walls which ends which extends crosswise of the post and is continuous through the corner 13 and both side walls of the bar.
  • the shelves herein shown may be prefabricated by attaching the margins of an open mesh stiff wire fabric 16 to a course of shelf framing rungs 17 preferably of wire or rod stock that is coarser and strong er than the wire of the mesh.
  • the shelf corners 1% which extend through the slots 14 in the corner posts 13 protrude into the concavity of the channels of the latter.
  • a tier of closed loops 18 spaced vertically one above another in the concavity of a single corner post there is formed cooperatively by the sides of the post and the aperture bordering shelf corners a tier of closed loops 18 spaced vertically one above another in the concavity of a single corner post.
  • Loops 18 are thus receptive to a vertical straight anchor pin 2:) whose ends 21 may be clinced over either or both the top and/ or bottom ends "of the corner posts 12, respectively. If only one of the ends of anchor pin 20 is turned or clinched over the end of the corner post the pin may be Withdrawn from the loops 1% for separating any corner post from its supported shelf corners without use of tools 'of mutilating the structure in any way.
  • Pin 26 will preferably have a free or snug sliding fit in the loops 18 when the frame rung 17 of each shelf abuts both ends of the slot 14.
  • Fig. 7 shows how a headless straight.
  • anchor pin 29' 'or member 22 which may be substituted for pin 20 and made of bent sheet metal to. lie face to face against the cavity bordering surface of corner post 12.
  • Anchor member 22 sufiiciently fits the. aperture 18 to positively prevent or-limit play between the corner post and the frame rung of the shelf as can the pin 20.
  • Anchor member 22, :like pin 20, may have its end or ends 21 bent to overlap or to loop. and clinch over the end or ends of corner post 12.
  • Anchor. members such as pin 20 and angle iron 22 may be dispensed with altogether if the frame rung 17 which forms the corners of the shelves is bent upward or'downward within the channel of the post as shown in Fig. .8. Or these frame rungs 24 may be bent in a twisting manner as shown in Fig. 9 to effect an equivalent mechanical locking together of the corner posts and the shelves.
  • Parts for making up this improved construction of rack to differing specifications when not in use may be stocked and compactly stored in differing groups of like shelves and like corner posts and selected for assemblage as hereinbefore described to suit the needs of the work currently being processed. This results in much saving of storage space.
  • Skeletonized shelf Webs may consist of apertured sheet metal, one of the apertures therein occurring at each extreme corner of each shelf to occupy the corner post.
  • a support post having a cross section of arched shape directed inward of the rack and, formed by side walls of the post meeting at the crest of said shape said side walls bordering a concavity of the post that faces outward of the rack and said post containing a continuous slot extending cross-Wise thereof through both of said side walls atsaid crest, a rack shelf having a border portion bowed convexly toward said post extending-through said slot and both of said side walls and occupying said concavity of the post, and locking means I within said concavity of the post comprising shelf anchoring detent structure formed and arranged to project from said border'portion of the shelf beyond the Width of said slot'to a position for engagement with both of said side walls of the post in a manner to prevent withdrawal of the said bowed border portion of the shelf.
  • the said rack shelf includes a web of crossed Wires
  • the said shelf border comprises an edge rung attached to and supporting said wires and bent in the said border portion to form a corner of said shelf.
  • slot comprises a portion of said shelf margin twisted, beyond the width of 7 said slot within the said concavity of the post.
  • the said locking means comprises an anchor pin in the said post concavity intervening between said bowed border of the shelf and both of the said side walls ofthe post in a manner positively to block said shelf border against withdrawal from said cavity through the said slot.

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  • Assembled Shelves (AREA)

Description

April 1960 A. D. DE MATTIA 2,
, CORNER LOCK CONSTRUCTION FOR RACKS Filed Nov. 13, 1956 INVENTOR v mfilwemawa ATTORNEY 2,933,193 CORNER LOCK CONSTRUCTION FOR RACKS Andrew D. De Mattia, Fairfieid, Conn, assignor to Rolock, Incorporated, Fairtield, Conn, a corporation of Connecticut Application November 13, 1956, Serial No. 621,825 Claims. (Ci. 211-134) This invention relates to a multiple level material handling rack of skeleton construction preferably light enough in weight to be portable and having vertically spaced perforate work carrying shelves or trays that permit free access to the workpieces of heat or a fluid processing medium such as will enable the fluid, if a liquid, to drain off readily through the perforations in the shelves.
it has been proposed to make a rack or tray for this purpose in the form of a unitary structure usually in cluding upright corner posts supporting the margins of work carrying shelves or trays in vertically spaced relation and on which posts the rack may stand. In former types of construction it has been proposed to weld the corner of each shelf rigidly and permanently to its sup porting post. Where open mesh, stiff wire fabric serves as the web of the shelf it has been proposed first to weld a course of horizontally extending shelf framing rungs to the corner posts and thereafter to apply the open wire mesh fabric by anchoring its marginal edges to such framing rungs. Edge anchorage is sometimes accompiished by clinching fringe ends of individual wires of the shelf forming fabric about the frame rung or by welding the margins of the wire mesh thereto.
These formerly proposed constructions have proven costly because involving much hand labor. They fail to lend themselves to economical quantity production of skeleton racks. relying on positive rigidity alone at the points of joinder of the shelves to the corner posts which rigidity can promote a tendency of the welds or welded members to be torn apart by intense stress. and strain caused by abrupt temperature changes that are unevenly distributed over different portions of the rack structure in high temperaturetreating processes. Even more abrupt temperature changes occur when heat treatment is followed by the sudden dropping. of rack temperature occasioned by plunging the rack and its carried work pieces into a cooling liquid for quenching. b
An object of this invention is to provide racks having multiple level perforate shelves or trays so constructed that each shelf, including its wire mesh fabric and supporting frame rungs, can be prefabricated individually by automatic machine processes and used as an interchangeable component in a knockdown type of rack assemblage including upright corner posts.
A further object is to enable the corner posts likewise to be manufactured individually as separate pieces and brought independently one by one into separable joinder with the margins or corners of the prefabricated shelves thereby to form a rack of knockdown construction in which selected prefabricated shelves can be supported by the corner posts at selectively spaced heights and can be individually replaced .if damaged or worn out in use while continuing to utilize all of the other parts of the rack.
A further object is to avoid dependence solely on unyielding rigidity of joinder of the shelf corners with the They further have the disadvantage of 2,933,193 Patented Apr. 19, 1960 corner posts by employing mechanical locking means of a nature to permit slight relative movement therebetween in the assembled structure.
The foregoing and other objects of the invention will appear from the following description of, preferred embodiments of the impovements having reference to the figures of the drawings wherein:
Fig. 1 shows an assembled annealing rack with multi-' and shelves.
Fig. 6 is a plan View looking downward on Fig. 5.
Fig. 7 shows the use of welding both for holding a mechanical corner locking element in place and if desired for holding the corner posts and shelves in permanently assembled relation independently of the locking element.
Fig. 8 shows a means for mechanically interlocking shelf corners to corner posts by distorting the shelf corners making unnecessary the use of a separate part to serve as locking element.
Fig. 9 shows a different manner of distorting the shelf corners to accomplish mechanical interlocking thereof with the corner posts.
The rack or multiple level tray of Figs. 1 to 4 is shown to comprise supporting corner posts 12 each of which comprises a vertically disposed bar which may be of V- shape, L-shape, U-shape or other arched shape in cross section having two angularly related side walls which ends which extends crosswise of the post and is continuous through the corner 13 and both side walls of the bar.
Through each of slots 14 in four or more corner posts .such as 12 there extends horizontally on a common level the outward pointing corners 19 or other bowed border of a rack shelf 15. The shelves herein shown may be prefabricated by attaching the margins of an open mesh stiff wire fabric 16 to a course of shelf framing rungs 17 preferably of wire or rod stock that is coarser and strong er than the wire of the mesh. The shelf corners 1% which extend through the slots 14 in the corner posts 13 protrude into the concavity of the channels of the latter. Thus there is formed cooperatively by the sides of the post and the aperture bordering shelf corners a tier of closed loops 18 spaced vertically one above another in the concavity of a single corner post. Loops 18 are thus receptive to a vertical straight anchor pin 2:) whose ends 21 may be clinced over either or both the top and/ or bottom ends "of the corner posts 12, respectively. If only one of the ends of anchor pin 20 is turned or clinched over the end of the corner post the pin may be Withdrawn from the loops 1% for separating any corner post from its supported shelf corners without use of tools 'of mutilating the structure in any way. Pin 26 will preferably have a free or snug sliding fit in the loops 18 when the frame rung 17 of each shelf abuts both ends of the slot 14.
Fig. 7 shows how a headless straight. anchor pin 29' 'or member 22 which may be substituted for pin 20 and made of bent sheet metal to. lie face to face against the cavity bordering surface of corner post 12. Anchor member 22 sufiiciently fits the. aperture 18 to positively prevent or-limit play between the corner post and the frame rung of the shelf as can the pin 20. Anchor member 22, :like pin 20, may have its end or ends 21 bent to overlap or to loop. and clinch over the end or ends of corner post 12. Anchor. members such as pin 20 and angle iron 22 may be dispensed with altogether if the frame rung 17 which forms the corners of the shelves is bent upward or'downward within the channel of the post as shown in Fig. .8. Or these frame rungs 24 may be bent in a twisting manner as shown in Fig. 9 to effect an equivalent mechanical locking together of the corner posts and the shelves.
Parts for making up this improved construction of rack to differing specifications when not in use may be stocked and compactly stored in differing groups of like shelves and like corner posts and selected for assemblage as hereinbefore described to suit the needs of the work currently being processed. This results in much saving of storage space. a
Skeletonized shelf Webs. may consist of apertured sheet metal, one of the apertures therein occurring at each extreme corner of each shelf to occupy the corner post.
. ciples of construction of the rack examples herein illustrated and described will be suggested to those skilled in the art by the present disclosure and all such variants are intended to covered that come within a broad interpretation of the language of the claims.
I claim:
1. In a rack an interlocking construction embodying in combination, a support post having a cross section of arched shape directed inward of the rack and, formed by side walls of the post meeting at the crest of said shape said side walls bordering a concavity of the post that faces outward of the rack and said post containing a continuous slot extending cross-Wise thereof through both of said side walls atsaid crest, a rack shelf having a border portion bowed convexly toward said post extending-through said slot and both of said side walls and occupying said concavity of the post, and locking means I within said concavity of the post comprising shelf anchoring detent structure formed and arranged to project from said border'portion of the shelf beyond the Width of said slot'to a position for engagement with both of said side walls of the post in a manner to prevent withdrawal of the said bowed border portion of the shelf.
3. In a rack an interlocking construction as defined in claim 1, in which the said rack shelf includes a mesh of crossed wires and the said shelf border includes an edge rung framing said mesh and secured thereto and forming the said bowed border portion of the shelf.
4. In a, rack an interlocking construction as defined in claim 1, in which the said rack shelf includes a web of crossed Wires, and the said shelf border comprises an edge rung attached to and supporting said wires and bent in the said border portion to form a corner of said shelf.
5. In a rack a plurality of interlocking constructions as defined in claim 1, in which the said shelf includes an open mesh webof stiff wire fabric and the said shelf 6. In a rack an interlocking construction as defined in 1 claim 1, in which the said means to prevent withdrawal of p the said shelf margin from the said post slot comprises a portion of said shelf margin bent beyond the width of said slot within the said concavity of the post.
7. In a rack an interlocking construction as defined in 7 claim 1, in which the said means to prevent withdrawal of.
the said shelf margin from the said post, slot comprises a portion of said shelf margin twisted, beyond the width of 7 said slot within the said concavity of the post.
8. Ina rack an interlocking construction as defined in claim 1, in which the said locking means comprises an anchor pin in the said post concavity intervening between said bowed border of the shelf and both of the said side walls ofthe post in a manner positively to block said shelf border against withdrawal from said cavity through the said slot.
9. In a rack an interlocking construction as defined in claim 8, in which both the said bowed border of the shelf and the said side walls of the post interloop with each other'to form and surround a space occupied by the said anchor pin. V i e 10. In a rack an interlocking construction as defined in claim 8, in which the said bowed border of the shelf forms an angle-flanking two sides of the said anchor pin and the said side walls of the post form an angle flanking two other sides of said pin thereby to imprisonv said pin in relation to said bowed border of the shelf. I
References Cited in the file of this patent UNITED STATES PATENTS.
893,786 Collis et al July 21, 1908 1,060,919 Luten May 6, 1913 1,172,026 Hough Feb. 15, 1916 1,625,612 Jensen Apr. 19,1927
1,827,449 Wood, Oct. 13, 1931 2,093,137 Re'ev's Sept. 14, 1937 2,240,367 Fe rnholtz Apr. 29, 1941 2,300,783 Grubel et a1. Nov. 3, 1942. 2,652,768 Moreno Sept.'22, 1953 2,804,227 Elfgren Aug. 27, 1957 v FOREIGN PATENTS 122,204" Sweden July 13, 194s 931,418 France Oct. 20, 1947 l. man
US621825A 1956-11-13 1956-11-13 Corner lock construction for racks Expired - Lifetime US2933193A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4391378A (en) * 1981-10-09 1983-07-05 The Sherwood Corporation Shelving console furniture
US4457239A (en) * 1978-09-22 1984-07-03 Heinze Bjarne C Shelving system and its production procedure
US4879800A (en) * 1988-07-29 1989-11-14 Rumman Sally H Method of producing a columnar support structure
US5348170A (en) * 1991-10-17 1994-09-20 Mckechnie (Uk) Limited Free-standing shelving system
US5685238A (en) * 1994-12-02 1997-11-11 P & G Industries Plc Shelving apparatus
WO2000016659A1 (en) * 1998-09-18 2000-03-30 Edoardo Gargano A system for connecting and fixing modular elements for shelvings with a plurality of shelves, ladders and furniture in general
US20040154262A1 (en) * 2002-11-21 2004-08-12 Joseph Jaroff Workstation
US20050046133A1 (en) * 2003-09-03 2005-03-03 Bielefelder Kuchenmaschinen Apparatus for the disposition and transportation of items
US20050139562A1 (en) * 2003-12-31 2005-06-30 Po-Ju Chen Support stand for shelf
US20130240461A1 (en) * 2012-03-16 2013-09-19 Ryan Scott Inc. Product display tower
US9084484B2 (en) 2011-08-22 2015-07-21 The Stanley Works Israel Ltd. Shelving system
GB2528299A (en) * 2014-07-17 2016-01-20 Ping-Hsien Wu Multiple-layer shelf assembly
US20160192776A1 (en) * 2013-08-21 2016-07-07 Lcc 2015 Aps A shelf
US20160198848A1 (en) * 2013-08-21 2016-07-14 Lcc 2015 Aps A system for the mounting of shelves

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US893786A (en) * 1907-04-29 1908-07-21 Collis Company Sectional stacked letter-tray.
US1060919A (en) * 1907-06-07 1913-05-06 Daniel B Luten Clamp for concrete-reinforcing members.
US1172026A (en) * 1912-03-29 1916-02-15 Patented Devices Company Reinforcement for concrete construction.
US1625612A (en) * 1926-04-05 1927-04-19 Carl C Jensen Fastening device
US1827449A (en) * 1930-07-15 1931-10-13 Burris D Wood Method of designating temperature zones in iceboxes
US2093137A (en) * 1934-01-17 1937-09-14 Gen Motors Corp Refrigerating apparatus
US2240367A (en) * 1939-04-08 1941-04-29 E A Jackson Heater
US2300783A (en) * 1940-11-16 1942-11-03 Wright Aeronautical Corp Furnace charging fixture
FR931418A (en) * 1939-02-27 1948-02-23 shelf
US2652768A (en) * 1951-07-09 1953-09-22 Jose H Moreno Cooking pan
US2804227A (en) * 1956-02-09 1957-08-27 Ernest T Elfgren Wire container structure

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US893786A (en) * 1907-04-29 1908-07-21 Collis Company Sectional stacked letter-tray.
US1060919A (en) * 1907-06-07 1913-05-06 Daniel B Luten Clamp for concrete-reinforcing members.
US1172026A (en) * 1912-03-29 1916-02-15 Patented Devices Company Reinforcement for concrete construction.
US1625612A (en) * 1926-04-05 1927-04-19 Carl C Jensen Fastening device
US1827449A (en) * 1930-07-15 1931-10-13 Burris D Wood Method of designating temperature zones in iceboxes
US2093137A (en) * 1934-01-17 1937-09-14 Gen Motors Corp Refrigerating apparatus
FR931418A (en) * 1939-02-27 1948-02-23 shelf
US2240367A (en) * 1939-04-08 1941-04-29 E A Jackson Heater
US2300783A (en) * 1940-11-16 1942-11-03 Wright Aeronautical Corp Furnace charging fixture
US2652768A (en) * 1951-07-09 1953-09-22 Jose H Moreno Cooking pan
US2804227A (en) * 1956-02-09 1957-08-27 Ernest T Elfgren Wire container structure

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4457239A (en) * 1978-09-22 1984-07-03 Heinze Bjarne C Shelving system and its production procedure
US4391378A (en) * 1981-10-09 1983-07-05 The Sherwood Corporation Shelving console furniture
US4879800A (en) * 1988-07-29 1989-11-14 Rumman Sally H Method of producing a columnar support structure
US5348170A (en) * 1991-10-17 1994-09-20 Mckechnie (Uk) Limited Free-standing shelving system
GB2260482B (en) * 1991-10-17 1996-01-10 Savage Ltd Free-standing shelving system
US5685238A (en) * 1994-12-02 1997-11-11 P & G Industries Plc Shelving apparatus
WO2000016659A1 (en) * 1998-09-18 2000-03-30 Edoardo Gargano A system for connecting and fixing modular elements for shelvings with a plurality of shelves, ladders and furniture in general
US20040154262A1 (en) * 2002-11-21 2004-08-12 Joseph Jaroff Workstation
US20050046133A1 (en) * 2003-09-03 2005-03-03 Bielefelder Kuchenmaschinen Apparatus for the disposition and transportation of items
US20050139562A1 (en) * 2003-12-31 2005-06-30 Po-Ju Chen Support stand for shelf
US7093728B2 (en) * 2003-12-31 2006-08-22 Po-Ju Chen Support stand for shelf
US9084484B2 (en) 2011-08-22 2015-07-21 The Stanley Works Israel Ltd. Shelving system
US20130240461A1 (en) * 2012-03-16 2013-09-19 Ryan Scott Inc. Product display tower
US20160192776A1 (en) * 2013-08-21 2016-07-07 Lcc 2015 Aps A shelf
US20160198848A1 (en) * 2013-08-21 2016-07-14 Lcc 2015 Aps A system for the mounting of shelves
US9775436B2 (en) * 2013-08-21 2017-10-03 Lcc 2015 Aps Shelf
US9781998B2 (en) * 2013-08-21 2017-10-10 Lcc 2015 Aps System for the mounting of shelves
GB2528299A (en) * 2014-07-17 2016-01-20 Ping-Hsien Wu Multiple-layer shelf assembly
GB2528299B (en) * 2014-07-17 2016-07-27 Wu Ping-Hsien Multiple-layer shelf assembly

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