US3523396A - Grating - Google Patents

Grating Download PDF

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Publication number
US3523396A
US3523396A US724848A US3523396DA US3523396A US 3523396 A US3523396 A US 3523396A US 724848 A US724848 A US 724848A US 3523396D A US3523396D A US 3523396DA US 3523396 A US3523396 A US 3523396A
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United States
Prior art keywords
bars
cross
longitudinal
slot
bar
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Expired - Lifetime
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US724848A
Inventor
Martinus C De Jonge
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MARTINUS C DE JONGE
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MARTINUS C DE JONGE
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Publication of US3523396A publication Critical patent/US3523396A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/42—Gratings; Grid-like panels
    • E04C2/421—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction
    • E04C2/422—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction with continuous bars connecting at crossing points of the grid pattern
    • E04C2/423—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction with continuous bars connecting at crossing points of the grid pattern with notches
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F19/00—Other details of constructional parts for finishing work on buildings
    • E04F19/10—Built-in gratings, e.g. foot-scrapers

Definitions

  • This invention relates to a grating with crossing longitudinal bars and cross bars in which the longitudinal bars and/or cross bars are provided in slots with which portions of the cross bars and/or longitudinal bars are in engagement.
  • gratings may be used for various purposes, for example for platforms, floors, boiler houses or machinery houses and other industrial purposes, in which case they usually consist of steel, while they can also be used as ornamental gratings for ventilators, ventilation openings, air conditioning and similar purposes, in which case they are usually made from aluminium.
  • the invention aims at providing a grating of this kind which may be easily and rapidly manufactured without the necessity of the longitudinal bars and cross bars being welded to each other.
  • both bars are anchored relative to each other in the longitudinal as well as in the transverse direction so that they cannot shift relative to each other and thus a firm unit is obtained. Since the bars need not be welded to each other the corners of the crossing bars remain entirely free of projections so that the grating thus manufactured has a pleasing appearance.
  • a preferred embodiment of the grating according to the invention is characterized in that at least one sidewall of the slots merges via a rounded or chamfered portion into the bottom of the slots. In this way the material of the bar co-operating with the bar comprising a projection is pressed behind said projection and thus a still better anchoring of these bars relative to each other is accomplished.
  • FIG. 1 diagrammatically a top plan view of the grating
  • FIG. 2 a section through part of the grating according to line IIII in FIG. 1;
  • FIG. 3 a view of part of a cross bar
  • FIG. 4 a section through another embodiment of the grating.
  • the grating shown in FIGS. 1 and 2 comprises a plurality of longitudinal bars 1 and a plurality of cross bars 2, which cross at right angles. These longitudinal bars and cross bars consist of strips of metal, preferably of steel or aluminium. Around these longitudinal bars and cross bars a frame 3 is provided which may be constructed in any manner known per se. The ends of the longitudinal bars 1 and of the cross bars 2 are connected with said frame 3 in a manner known per se. The construction of the grating frame and the connection of the ends of the longitudinal bars 1 and the cross bars 2 do not form part of the invention so that these will not be further described.
  • each slot 4 comprises a projection 6 projecting into said slot, said projection 6 being situated at a small distance from the slot bottom 7.
  • the other sidewall 8 merges via a rounded portion 9 into the slot bottom 7.
  • the cross bars 2 also comprise slots 10.
  • the height h of the cross bar portion positioned above the slots 10 is equal to the depth of the slots 4 so that, when the cross bars 2 have been put in place, the upper surfaces thereof are situated in one plane with the upper surfaces of the longitudinal bars 1.
  • FIG. 2 shows four different positions of a cross bar 2 in a longitudinal bar 1.
  • the first position shows the cross bar 2 above the longitudinal bar 1.
  • the slot 10 arrives opposite the slot 4 of the longitudinal bar 1, after which that portion of the cross bar 2 which is positioned above the slot 4 enters said slot 4 and the portion of the longitudinal bar 1 situated below the slot 4 enters the slot 10.
  • the walls of the slots 4 and 10 therefore slide along the sidewalls of the cross bars and longitudinal bars.
  • the cross bar 2 assumes the third position shown in FIG. 2 in which the projection 6 penetrates into the cross -bar 2.
  • the cross bar 2 If thereupon the cross bar 2 is further moved the end of its portion positioned above the slot 10 meets the curved portion 9 of the bottom 7 of the slot 4. Upon further movement of the cross bar 2 the latter arrives in its final position which is shown as the fourth position in FIG. 2.
  • the end of the cross bar 2 is deformed by the curved portion 9 so that the groove which the projection 6 has made in the bottom end of the cross bar when being pressed into the end of the slot 4 is closed. Since the curved portion 9 is onlv small and, moreover, it is closed by the portions of the cross bar 2 lying against the longitudinal bar 1 the thus formed rounded area of the portion of the cross bar 2 positioned in the slot 4 is not visible while nevertheless a reliable mutual locking between the longitudinal bar and cross bar is accomplished.
  • FIG. 4 shows an embodiment in which the height of each cross bar 11 is equal to the depth of the slots 12 in the longitudinal bars 13. Between the sidewall 14 of the slot 4 and the bottom 15 thereof there is provided in this embodiment a chamfered portion 16. The sidewall 17 of the slot 12 is provided with two projections 18.
  • the profile of the longitudinal bars and the cross bars thereby does not play a part.
  • the projections may be provided in the same way as described and shown for the longitudinal bars, as is also apparent from FIG. 3, in the slots of the cross bars or both in the cross bars and in the longitudinal bars. In FIG. 3 such a projection 19 is shown in view in the slots 10 of the cross bar 2.
  • a grating with crossing longitudinal bars and cross bars at least said longitudinal bars being provided with slots with substantially parallel sidewalls into which portions of the cross bars grip, at least one of the sidewalls of each of said slots being provided with at least one projection extending into said slot by which the Width of said slot is diminished at said projection, the remaining sidewall, below said projection, being inclined towards said one sidewall and merging with the bottom of said slot.
  • a grating according to claim 1 characterized in that the width of the portion of each of said slots in the longitudinal bars lying under said projection being smaller than the width of the portion of said slot lying above said projection.
  • a grating according to claim 1 characterized in that the inclined portion of said remaining sidewall is a rounded portion directed towards the Wall provided with the projection.
  • a grating according to claim 1 characterized in that the inclined portion of said remaining sidewall is a chamfered portion directed towards the wall provided with the projection.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sewage (AREA)
  • Incineration Of Waste (AREA)
  • Panels For Use In Building Construction (AREA)
  • Fencing (AREA)

Description

1970 MC. DE JONGE 3,523,396
GRATING Filed April 29. 1968 FIG.1
ATTORNEY Patented Aug. 11, 1970 3,523,396 GRATING Martinus C. de Jonge, 17 Hobbemalaan, Bilthoven, Netherlands Filed Apr. 29, 1968, Ser. No. 724,848 Claims priority, application Netherlands, May 3, 1967, 6706205 Int. Cl. E04c /04 US. Cl. 52668 4 Claims ABSTRACT OF THE DISCLOSURE A grating having crossing longitudinal bars and cross bars, of which at least the longitudinal bars are provided with slots of which at least one of the sidewalls is provided with a projection by which the cross bars are reliably secured in the slots of the longitudinal bars.
This invention relates to a grating with crossing longitudinal bars and cross bars in which the longitudinal bars and/or cross bars are provided in slots with which portions of the cross bars and/or longitudinal bars are in engagement. Such gratings may be used for various purposes, for example for platforms, floors, boiler houses or machinery houses and other industrial purposes, in which case they usually consist of steel, while they can also be used as ornamental gratings for ventilators, ventilation openings, air conditioning and similar purposes, in which case they are usually made from aluminium.
The invention aims at providing a grating of this kind which may be easily and rapidly manufactured without the necessity of the longitudinal bars and cross bars being welded to each other. This is accomplished according to the invention in that at least one of the sidewalls of the slots of the longitudinal bars and/or cross bars are provided with at least one projection. In consequence of the fact that each time one or each projection of one bar penetrates into the material of the other bar engaging or gripping around the first mentioned bar, both bars are anchored relative to each other in the longitudinal as well as in the transverse direction so that they cannot shift relative to each other and thus a firm unit is obtained. Since the bars need not be welded to each other the corners of the crossing bars remain entirely free of projections so that the grating thus manufactured has a pleasing appearance.
A preferred embodiment of the grating according to the invention is characterized in that at least one sidewall of the slots merges via a rounded or chamfered portion into the bottom of the slots. In this way the material of the bar co-operating with the bar comprising a projection is pressed behind said projection and thus a still better anchoring of these bars relative to each other is accomplished.
The invention will be further explained below with reference to the drawings showing by way of example some embodiments of the grating according to the in vention.
These drawings show in:
FIG. 1 diagrammatically a top plan view of the grating;
FIG. 2 a section through part of the grating according to line IIII in FIG. 1;
FIG. 3 a view of part of a cross bar;
FIG. 4 a section through another embodiment of the grating.
The grating shown in FIGS. 1 and 2 comprises a plurality of longitudinal bars 1 and a plurality of cross bars 2, which cross at right angles. These longitudinal bars and cross bars consist of strips of metal, preferably of steel or aluminium. Around these longitudinal bars and cross bars a frame 3 is provided which may be constructed in any manner known per se. The ends of the longitudinal bars 1 and of the cross bars 2 are connected with said frame 3 in a manner known per se. The construction of the grating frame and the connection of the ends of the longitudinal bars 1 and the cross bars 2 do not form part of the invention so that these will not be further described.
As is apparent from FIG. 2 the longitudinal bars 1 have a greater height than the cross bars 2, but these bars may also have the same height. The longitudinal bars 1 are provided with slots 4. One sidewall 5 of each slot 4 comprises a projection 6 projecting into said slot, said projection 6 being situated at a small distance from the slot bottom 7. The other sidewall 8 merges via a rounded portion 9 into the slot bottom 7.
The cross bars 2 also comprise slots 10. The height h of the cross bar portion positioned above the slots 10 is equal to the depth of the slots 4 so that, when the cross bars 2 have been put in place, the upper surfaces thereof are situated in one plane with the upper surfaces of the longitudinal bars 1.
FIG. 2 shows four different positions of a cross bar 2 in a longitudinal bar 1. The first position shows the cross bar 2 above the longitudinal bar 1. When the cross bar 2 is moved towards the longitudinal bar 1 the slot 10 arrives opposite the slot 4 of the longitudinal bar 1, after which that portion of the cross bar 2 which is positioned above the slot 4 enters said slot 4 and the portion of the longitudinal bar 1 situated below the slot 4 enters the slot 10. The walls of the slots 4 and 10 therefore slide along the sidewalls of the cross bars and longitudinal bars. Via the second position shown in FIG. 2 the cross bar 2 assumes the third position shown in FIG. 2 in which the projection 6 penetrates into the cross -bar 2. If thereupon the cross bar 2 is further moved the end of its portion positioned above the slot 10 meets the curved portion 9 of the bottom 7 of the slot 4. Upon further movement of the cross bar 2 the latter arrives in its final position which is shown as the fourth position in FIG. 2. The end of the cross bar 2 is deformed by the curved portion 9 so that the groove which the projection 6 has made in the bottom end of the cross bar when being pressed into the end of the slot 4 is closed. Since the curved portion 9 is onlv small and, moreover, it is closed by the portions of the cross bar 2 lying against the longitudinal bar 1 the thus formed rounded area of the portion of the cross bar 2 positioned in the slot 4 is not visible while nevertheless a reliable mutual locking between the longitudinal bar and cross bar is accomplished.
FIG. 4 shows an embodiment in which the height of each cross bar 11 is equal to the depth of the slots 12 in the longitudinal bars 13. Between the sidewall 14 of the slot 4 and the bottom 15 thereof there is provided in this embodiment a chamfered portion 16. The sidewall 17 of the slot 12 is provided with two projections 18.
It is obvious that the invention is not restricted to the embodiments described above and shown in the drawings, but that these may be modified in many ways without departing from the scope of the invention. The profile of the longitudinal bars and the cross bars thereby does not play a part. If required, the projections may be provided in the same way as described and shown for the longitudinal bars, as is also apparent from FIG. 3, in the slots of the cross bars or both in the cross bars and in the longitudinal bars. In FIG. 3 such a projection 19 is shown in view in the slots 10 of the cross bar 2.
I claim:
1. A grating with crossing longitudinal bars and cross bars, at least said longitudinal bars being provided with slots with substantially parallel sidewalls into which portions of the cross bars grip, at least one of the sidewalls of each of said slots being provided with at least one projection extending into said slot by which the Width of said slot is diminished at said projection, the remaining sidewall, below said projection, being inclined towards said one sidewall and merging with the bottom of said slot.
2. A grating according to claim 1, characterized in that the width of the portion of each of said slots in the longitudinal bars lying under said projection being smaller than the width of the portion of said slot lying above said projection.
3. A grating according to claim 1, characterized in that the inclined portion of said remaining sidewall is a rounded portion directed towards the Wall provided with the projection.
4. A grating according to claim 1, characterized in that the inclined portion of said remaining sidewall is a chamfered portion directed towards the wall provided with the projection.
References Cited UNITED STATES PATENTS OTHER REFERENCES 1,184,926, January 1965, German printed application, Walter.
ALFRED c. PERHAM, Primary Examiner
US724848A 1967-05-03 1968-04-29 Grating Expired - Lifetime US3523396A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL676706205A NL140030B (en) 1967-05-03 1967-05-03 GRILL WITH CUTTING LONG AND CROSS BARS ON EACH OTHER.

Publications (1)

Publication Number Publication Date
US3523396A true US3523396A (en) 1970-08-11

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ID=19800028

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Application Number Title Priority Date Filing Date
US724848A Expired - Lifetime US3523396A (en) 1967-05-03 1968-04-29 Grating

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US (1) US3523396A (en)
JP (1) JPS4834693B1 (en)
BE (1) BE714374A (en)
CH (1) CH473957A (en)
DE (1) DE1759436A1 (en)
DK (1) DK131355B (en)
FR (1) FR1563396A (en)
GB (1) GB1222531A (en)
NL (1) NL140030B (en)
NO (1) NO127139B (en)
SE (1) SE327525B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864887A (en) * 1972-09-12 1975-02-11 Erich Arens Grating
US3992163A (en) * 1969-09-30 1976-11-16 Reliance Steel Products Company Aluminum-containing welded grating
NL1027589C2 (en) * 2004-11-25 2006-05-29 Godefridus Cornelis Johannes H Schedule and method for assembling it.
US20130081607A1 (en) * 2011-09-30 2013-04-04 Christopher D. WEYANDT Portable cooking apparatus
US20140209083A1 (en) * 2012-04-30 2014-07-31 Clifford Kenneth Young Portable Camping and Survival Stove
CN105605410A (en) * 2016-03-14 2016-05-25 烟台胜闻斯国际贸易有限公司 Plug-in type aluminum grating plate and preparing method thereof
US20210025751A1 (en) * 2018-03-28 2021-01-28 Megaterm Plus Spolka Z Ograniczona Odpowiedzialnoscia Weighing platform with a latticed load-bearing structure

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8208932U1 (en) * 1982-03-29 1982-08-12 Heinrich Nickel GmbH Klima- und Lufttechnik, 5240 Betzdorf PRESSURE SHAFT VALVE FOR CHANNELS OF VENTILATION AND / OR AIR CONDITIONING
CH658509A5 (en) * 1982-07-09 1986-11-14 Multisafe Ag PROTECTIVE GRILLE.
DE29712032U1 (en) * 1997-07-09 1997-09-04 Dick Metallkonstruktionen und Laserschneidtechnik GmbH, 67112 Mutterstadt Metal grating
DE102006000862B4 (en) * 2006-01-05 2017-01-05 Arno Domnick grating

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1674479A (en) * 1926-08-19 1928-06-19 Tri Lok Company Grating
GB343456A (en) * 1929-11-12 1931-02-12 Otto Schultz Improvements in gratings and the like
US2918995A (en) * 1956-07-26 1959-12-29 Smithcraft Corp Joints and method of making joints

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1674479A (en) * 1926-08-19 1928-06-19 Tri Lok Company Grating
GB343456A (en) * 1929-11-12 1931-02-12 Otto Schultz Improvements in gratings and the like
US2918995A (en) * 1956-07-26 1959-12-29 Smithcraft Corp Joints and method of making joints

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3992163A (en) * 1969-09-30 1976-11-16 Reliance Steel Products Company Aluminum-containing welded grating
US3864887A (en) * 1972-09-12 1975-02-11 Erich Arens Grating
NL1027589C2 (en) * 2004-11-25 2006-05-29 Godefridus Cornelis Johannes H Schedule and method for assembling it.
US20130081607A1 (en) * 2011-09-30 2013-04-04 Christopher D. WEYANDT Portable cooking apparatus
US8919335B2 (en) * 2011-09-30 2014-12-30 Christopher D. WEYANDT Portable cooking apparatus
US20140209083A1 (en) * 2012-04-30 2014-07-31 Clifford Kenneth Young Portable Camping and Survival Stove
US9854936B2 (en) * 2012-04-30 2018-01-02 James Fisher Portable camping and survival stove
CN105605410A (en) * 2016-03-14 2016-05-25 烟台胜闻斯国际贸易有限公司 Plug-in type aluminum grating plate and preparing method thereof
US20210025751A1 (en) * 2018-03-28 2021-01-28 Megaterm Plus Spolka Z Ograniczona Odpowiedzialnoscia Weighing platform with a latticed load-bearing structure
US11892341B2 (en) * 2018-03-28 2024-02-06 Megaterm Plus Spolka Z Ograniczona Odpowiedialnoscia Weighing platform with a latticed load-bearing structure

Also Published As

Publication number Publication date
FR1563396A (en) 1969-04-11
CH473957A (en) 1969-06-15
NO127139B (en) 1973-05-14
DE1759436A1 (en) 1971-06-03
DK131355B (en) 1975-06-30
NL6706205A (en) 1968-11-04
GB1222531A (en) 1971-02-17
SE327525B (en) 1970-08-24
BE714374A (en) 1968-09-16
JPS4834693B1 (en) 1973-10-23
NL140030B (en) 1973-10-15
DK131355C (en) 1975-11-24

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