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Publication numberUS3302355 A
Publication typeGrant
Publication dateFeb 7, 1967
Filing dateJun 8, 1964
Priority dateJun 15, 1963
Publication numberUS 3302355 A, US 3302355A, US-A-3302355, US3302355 A, US3302355A
InventorsChinneck Edgar H
Original AssigneeDowson & Dobson Ltd
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Ceiling structures
US 3302355 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Feb. 7, 1967 E, H. cHlNNEcK CEILING STRUCTURES 2 Sheets-Sheet l Filed June 8. 1964 Feb. 7, 1967 E. H. cHlNNEcK CEILING STRUCTURES 2 Sheets-Sheet 2 Filed June 8, 1964 hwmlk .,I. l.

ik] w United States Patent O 3,302,355 CEILING STRUCTURES Edgar H. Chinneck, Johannesburg, Transvaal, Republic of South Africa, assigner to Dowson & Dobson Limited, Selby, Johannesburg, Transvaal, Republic of South Africa Filed June 8, 1964, Ser. No. 373,296 Claims priority, application Republic of South Africa, Oct. 31, 1963, 63/4,938 4 Claims. (Cl. 52-484) This invention relates toy ceiling structures of the kind in which a series of panels is hung from a framework of sheet metal. Usually the framework is assembled by rivetting or by the use of screws and bolts and the panels are clipped in place.

The fabrication on the site of the framework is apt to be rather troublesome and consequently expensive and the object of this invention is to propose an alternative construction which is advantageous as regards labour, time and cost.

The invention is illustrated, by way of example, in the accompanying drawings in which:

FIGU-RE l is a vertical section through part of a ceiling,

FIGURE 2 is a similar view to FIGURE l,

FIGURE 3 is a plan View of part of a ceiling structure,

FIGURE 4 is a perspective View of part of a ceiling structure,

FIGURE 5 is a vertical section on the line 5--5 of FIGURE 4, and

FIGURE 6 is a vertical section on the line 6-6 of FIGURE 4.

In the drawings, the walls are numbered 10. Around them and secured to them is a rectangular wall beam 12 having a vertical limb 14 (xed to the walls by pins 16) and a horizontal limb 18 extending as a ledge inwardly from the walls. The limb 14 has a series of cuts dening tongues 20 any one of which can be bent inwardly, that is, t-o overlie the limb 18, as shown at 18a in FIGURE 4.

Within the wall beam is a rectangular grid, consisting of peripheral beams 22 of Z-section, identical parallel longitudinals 23, and parallel laterals or crossbeams 24 of channel section. The crossbeams could extend between pairs of longitudinals and be secured to them; or, as shown, they may extend through holes 26 preformed at intervals in the l-ongitudinals 23. The crossbeams are formed with cruciform slots 28 spaced along their length. The hOles 26 are E-shaped. The crossbeams are passed through the holes 26 and the tongued formations 30 of the Es are passed relatively through the slots 28 and bent over `as shown at 32, to stabilize the grid. The longitudinals 23 are attached to the peripherals 22, and the peripherals 22 themselves are attached to each other at the corners of the grid, by means of angle brackets 34, with tongues that are pressed outwardly, passed through slots such as 36 in the beams 22 and 23 and twisted.

The crossbeams 24 project beyond the peripheral grid. Their ends are engaged in channel-shaped brackets 38 that are supported on or are integral with plates 40 pinned to the walls by pins 42 through preformed holes in the wall beams 12. As will be seen, the beams 24 and hence the whole grid 22, 23, 24 is supported above the ledges 18.


The beams 22, 23, 24 are telescopic to be adjustable for length; or lengths may be jo-ined together by complementally shaped connector plates 44 (FIGURES l-3) that have tongues 46 to be received in slots 28 or 36 in the beams. The t-ongues are twisted to secure the lengths of beam together.

The panels 52 are shown as trough-shaped, in FIG- URES 4 and 5 and at n FIGURE 6. They can be perforated. The fourth edge 54 is of L-section, the web forming the wall of the trough and the ange 56 projecting outwardly. The face of each panel may be faceted or otherwise shaped for rigidity.

The panels are butted edge to edge to form a continuous rectilinear surface. The assembly of panels is secured by spring clips 58 (FIGURE 6), that are mounted on the edges of the panels and are passed into and through preformed holes 60 in the peripherals and the longitudinals. The anges 56 overlie the edges of adjacent panels so that each panel assists in supporting its neighbour.

Cross braces 62 are used to stiften the framework grid and are screwed to the beams.

The spaces between the peripherals 22 and the walls 10 are filled by panels'64 (FIGURES 5, 6) the outer edges of which rest on the ledges 18 and the inner edges of which are held up by spring clips 66, that pass through holes in the peripherals. The outer edges are anchored by bending out the tongues 18a to clamp the panel edges against the ledges 18.

The grid is held up by a seriesI of straps 68 anchored to fix-ed structure above the ceiling. The strap is connected to the grid by screws 70 passed through preformed holes in the upper flanges of the crossbeams 24 and screwed into brackets 72 on the straps; or clips 74 may be used as shown in FIGURE 3 to secure the straps to the crossbeams 24.

I claim:

1. A ceiling structure of the kind in which a series of panels is hung from a framework of sheet metal elements, in which the framework consists in a rectangular wall beam of L-section that extends around the wall with one limb of the L extending inwardly to pro-vide ledges for the outer edges of the outside panels; a rectangular outer frame inside the wallbeana and spaced from it, made up of Z-beams, a series of parallel longitudinal beams inside the outer frame and connected to it at the ends of the longitudinal beams, a series of crossbeams passing through preformed holes in the longitudinals and the outer frame and supported at their ends by the wall beam above the level of the ledges, straps to support the framework; a series of rectangular panels juxtaposed to form a continuous rectilinear surface, the outer edges of the outer panels resting on the ledges, and spring clips connecting the panels to the beams of the framework.

2. The structure of claim 1 comprising tongues on the wall beams bent inwardly from the wall and over lying the panel edges to anchor the panels between the bent tongues and the ledges.

3. The structure of caim 1 in which the longitudinal beams have a series of preformed holes spaced along their length, each hole having indentations to provide tongues and in which the crossbeams have a series of slots spaced along their lengths; tongues in the longitudinal beams bent over, passed through slots in the crossbeams and twisted over, and corner pieces connecting the corner of the outer frame together as Well as the 2,710,679 6/1955 Bibbs 189-36 ends of the lotngitudinal beams to the outer frame. 3,190,208 6/1965 Styne 52--484 4. The structure of claim 3 in which the corner pieces 3,204,383 9/1965 Adams 52-484 secure the frame elements togather by means of slots 3,212,224 10/1965 Spangenberg 52-484 and tongues passed through the slots and twlsted over. 5 FOREIGN PATENTS References Cited by the Examiner 1,274,880 9/1961 France.


2,640,570 6/1953 Horowitz 189-36

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2640570 *Feb 26, 1948Jun 2, 1953Alexandre HorowitzSupporting construction for building layers
US2710679 *Oct 24, 1950Jun 14, 1955Bibb John MSuspended ceiling construction
US3190208 *May 21, 1963Jun 22, 1965Lee JamesCeiling construction
US3204383 *Jan 24, 1963Sep 7, 1965Adams George CMetal pan acoustical ceiling
US3212224 *Oct 29, 1962Oct 19, 1965Hunter Douglas Int Quebec LtdCeiling or wall paneling structure
FR1274880A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3590546 *Apr 21, 1969Jul 6, 1971Air FactorsSuspended ceiling support and air distribution outlet assembly
US3678641 *Sep 9, 1970Jul 25, 1972Alcan Aluminum CorpCeiling suspension system
US5081812 *May 16, 1990Jan 21, 1992Reynolds Henry BCeiling devices
US6516581 *Mar 22, 2001Feb 11, 2003William PaulWall angle for use in suspended ceiling grid structure and including multi-purpose measurement indicia
US6516582 *Sep 12, 2001Feb 11, 2003William PaulWall angle for use in suspended ceiling grid structure and including multi-purpose measurement indicia such as differently configured indentation or punch-out portions
WO2004007863A1 *Jul 3, 2002Jan 22, 2004Carol PaulWall angle for use in suspended ceiling grid structure and including multi-purpose measurement indicia
U.S. Classification52/506.6, 52/664
International ClassificationE04B9/06, E04B9/12
Cooperative ClassificationE04B9/125
European ClassificationE04B9/12B1