US2077713A - Acoustical material - Google Patents
Acoustical material Download PDFInfo
- Publication number
- US2077713A US2077713A US65181A US6518136A US2077713A US 2077713 A US2077713 A US 2077713A US 65181 A US65181 A US 65181A US 6518136 A US6518136 A US 6518136A US 2077713 A US2077713 A US 2077713A
- Authority
- US
- United States
- Prior art keywords
- sheets
- rails
- sound absorbing
- sheet
- sound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 title description 14
- 238000010276 construction Methods 0.000 description 11
- 239000011358 absorbing material Substances 0.000 description 5
- 230000029058 respiratory gaseous exchange Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- -1 felt Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/8409—Sound-absorbing elements sheet-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
- E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
Definitions
- This invention relates to sound absorbing materials such as are used generally on the interior walls of oillces, auditoriums and rooms generally for the purpose of deadening sound and improvlng the acoustical properties of such rooms.
- a further object is to provide means for applying the material to a surface whereby the securing-elements have the additional advantage of enhancing the beauty of the surface to which it is applied.
- Fig. 1 is a perspective view, looking upwardly at the corner of a room with a portion of the ceiling covered according to our invention
- Fig. 2 shows a cross section of one form of construction with one means for connection of the several sections of material
- Fig. 3 is a cross section of a form of construction in which two forms of attaching devices are shown with the incorporation of trim strips on said devices;
- Fig. 4 is an enlarged view of a part of the at- 55 taching means shown in Fig. 3 with its lower portion formed into the combined slab or sheet retainer and trim strip, and
- Fig. 5 shows a form of slab or sheet connection and trim strip which may be used in our ini'ention.
- the sound absorbing construction includes, generally, a plurality of sections of sound absorbing elements I0 of suitable material which may be made of rock wool, felt, cellulose lbers and other substances, and they may be cut in squares as shown, or in relatively long strips.
- the shape of these elements is not necessarily limited to rectangular form, but may be made in diagonal, parallel shape and other forms.
- retaining means comprising relatively thin stili sheets or diaphragms, il.
- These may be made of suitable materials, such .as phenolic condensation products7 asbestos, metal and compressed ber board and may or may not have sound absorbing qualities, as desired. lt is preferred that these sheets il be made resilient so that they may be bowed slightly fora purpose to be explained later.
- the sheets are provided with suitable holes I2 to permit passage of sound therethrough to the absorbing elements l0.
- the apertures i2 are preferably formed in the sheets or diaphragms II by punching the material from the outer surface, the punching raising small conical portions I2a around the inner surfaces of the sheet.
- the said conical portions increase lthe thickness of the sheet at the apertured portions, producing a more eilicient sound-dissipating action in the buffeting of the sound waves as they pass through the apertures.
- the edges of the conical portions l2a are irregular and jagged.
- Securing members I3, in the form of rails, are preferably made of metal and are provided with means for engaging and retaining the edges of the sheets II, as by grooves I4 formed in said rails, best shown in Fig. 4.
- Rails I3 may be secured to a ceiling or other surfaces by various fastening means such as the toggle bolt I5 and ordinary nails or screws as at I in Fig. 3.
- a simple strap fastener I1 suitably secured, may be bent over the flanges of the rail members to anchor them.
- the grooves Il are defined at their outer or lower side by a trim strip I8 and may be at as shown, or may be formed in various ornamental designs as desired.
- the rails I3 are shown in this embodiment secured in parallel position. Where the sound absorbing elementsA and the sheets form joints transverse to the rail, the trim strip Il is used.
- the application of our improved construction is accomplished in the following manner.
- the rails are secured to the supporting surface, such as a wall or ceiling and the sound absorbing elements or mats are placed in the space between the rails.
- Sheets Il are inserted between the rails and in the grooves i4 of said rails. by flexing them slightly and slipping the edges of the sheets into the grooves. 'I'he stiffness of the sheets causes them to spring back to their original fiatness.
- one of the cross strips l! is placed, as shown in Fig. 2.
- the cross strip may be in the form of a longitudinally divided half portion of one -of the strips Il.
- the rails il may be made for abutting surfaces. or the member as shown may have one of its base plates 2li bent over or cut ofi.
- the method of interlocking the sheets Il is of distinct advantage in that the trim strip and its corresponding construction on the rails i3 eifectively seals the joint between the sheets, and no air can circulate through the joints to permit breathing and the resulting soiling of the surface with accumulated dust and dirt. Further, these trim strips add an attractive and finished touch to the surface in the style of paneling. The outer faces of the strips may be finished in colors contrasting to that of the sheets Il if desired.
- the conical projections l2a have jagged or saw-tooth extremities which engage and distend the absorbent pad at a multiplicity of points on the ceiling or wall, giving the sound an opportunity to spread laterally through the apertures caused by the saw-toothed edge and across the outer surface of the absorbent pad, thus increasing the area exposed to the sound waves transmitted through the perforations.
- the said jagged edged projections Ila furthermore, by engagement with the pads iii, prevent the pads from slipping or becoming displaced with reference to the retaining sheets. By the elimination of such slipping or displacement. caitraction and expansion, resulting in "breathing” action is substantially eliminated. s
- a soft sound absorbing material disposed against a supporting surface, a plurality of polygonal facing sheets covering said material and having edges thereof disposed in close opposing relation, a plurality of rails secured to a supporting surface and having elements for engaging the opposing edges of said sheets.
- said sheets having limited flexibility to enable the same lto be bowed to permit engagement of opposite edges cf a sheet with a pair of such rails.
- a sound absorbing construction comprising a sound absorbing medium, a series of nat sheet for retaining said absorbing medium.
- said sheets being disposed with certain of their edges in close opposing relation, a plurality of rail members having means for attaching to a supporting surface, means on said rail members for engaging and sealing said sheets at their adjacent edges. and means positioned at an angle to said rail members for engaging and sealing adjacent edges of the same sheet.
- a pad of relatively soft, sound absorbing material 3.
- a dat facing sheet having a multiplicity of perforations formed therein, the inner surface of said sheet having projections formed about said perforations. said projections engaging said pad and preventing displacement thereof relative to said sheet and means for securing said sheet in spaced relation to a supporting surface with said pad disposed therebehind.
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Description
April 20, 1937. D F, R055 -1- AL 2,077,713
AcoUsTIcAL MATERIAL Filed Feb. 24, 1936 5y Zhll iitarzeysy UNITED STATES PATENT OFFICE ACOUSTICAL MATERIAL Donald F. Ross and Walter A. Elliott, Minneapolis, Minn.
Application February 24. 1936, Serial No. 85,181
4 Claims.
This invention relates to sound absorbing materials such as are used generally on the interior walls of oillces, auditoriums and rooms generally for the purpose of deadening sound and improvlng the acoustical properties of such rooms.
It is an object of our invention to provide means for installing such materials in a manner which is simple to carry out and at the same time presents an attractive appearance.
There are several types of sound absorbing materials and devices in use at this time, but they possess disadvantages which it is one of the objects of our invention to overcome. One such disadvantage is the tendency for these materials to gather dust at the joints of the several sections of material due to the breathing action peculiar to this class of building material. Breathing takes place at the joints in most cases due to the space between each separate part of such construction, which space causes a slight circulation of air through the joint. The circulation thus induced, results in the deposit of dust at the joints in the material and consequent discoloration of the surface covered with the sound absorbing agent. Many of the materials used depend upon their porosity for eiectiveness and thus cannot be painted to cover the accumulated dust. An object of our invention -is to apply sound absorbing materials to a surface in a manner which will eliminate any danger of breathing.
A further object is to provide means for applying the material to a surface whereby the securing-elements have the additional advantage of enhancing the beauty of the surface to which it is applied.
These and other objects and advantages of the invention will more fully appear from the following description made in connection with the accompanying drawing, wherein like reference characters refer to the same or similar parts throughout the various views, and in whichz Fig. 1 is a perspective view, looking upwardly at the corner of a room with a portion of the ceiling covered according to our invention;
Fig. 2 shows a cross section of one form of construction with one means for connection of the several sections of material;
Fig. 3 is a cross section of a form of construction in which two forms of attaching devices are shown with the incorporation of trim strips on said devices;
Fig. 4 is an enlarged view of a part of the at- 55 taching means shown in Fig. 3 with its lower portion formed into the combined slab or sheet retainer and trim strip, and
Fig. 5 shows a form of slab or sheet connection and trim strip which may be used in our ini'ention.
in one embodiment of our invention, the sound absorbing construction includes, generally, a plurality of sections of sound absorbing elements I0 of suitable material which may be made of rock wool, felt, cellulose lbers and other substances, and they may be cut in squares as shown, or in relatively long strips. The shape of these elements is not necessarily limited to rectangular form, but may be made in diagonal, parallel shape and other forms.
To retain the elements it, we provide retaining means comprising relatively thin stili sheets or diaphragms, il. These may be made of suitable materials, such .as phenolic condensation products7 asbestos, metal and compressed ber board and may or may not have sound absorbing qualities, as desired. lt is preferred that these sheets il be made resilient so that they may be bowed slightly fora purpose to be explained later. The sheets are provided with suitable holes I2 to permit passage of sound therethrough to the absorbing elements l0. The apertures i2 are preferably formed in the sheets or diaphragms II by punching the material from the outer surface, the punching raising small conical portions I2a around the inner surfaces of the sheet. The said conical portions increase lthe thickness of the sheet at the apertured portions, producing a more eilicient sound-dissipating action in the buffeting of the sound waves as they pass through the apertures. The edges of the conical portions l2a are irregular and jagged.
Securing members I3, in the form of rails, are preferably made of metal and are provided with means for engaging and retaining the edges of the sheets II, as by grooves I4 formed in said rails, best shown in Fig. 4. Rails I3 may be secured to a ceiling or other surfaces by various fastening means such as the toggle bolt I5 and ordinary nails or screws as at I in Fig. 3. In Fig. 1, a simple strap fastener I1, suitably secured, may be bent over the flanges of the rail members to anchor them. The grooves Il are defined at their outer or lower side by a trim strip I8 and may be at as shown, or may be formed in various ornamental designs as desired.
The rails I3 are shown in this embodiment secured in parallel position. Where the sound absorbing elementsA and the sheets form joints transverse to the rail, the trim strip Il is used.
It has grooves and an outer facing surface similar to that on the sheet retaining edge of the rails il.
The application of our improved construction is accomplished in the following manner. The rails are secured to the supporting surface, such as a wall or ceiling and the sound absorbing elements or mats are placed in the space between the rails. Sheets Il are inserted between the rails and in the grooves i4 of said rails. by flexing them slightly and slipping the edges of the sheets into the grooves. 'I'he stiffness of the sheets causes them to spring back to their original fiatness. On. the edge of the sheet transverse to the rails Il, one of the cross strips l! is placed, as shown in Fig. 2. When an abutting surface is reached, the cross strip may be in the form of a longitudinally divided half portion of one -of the strips Il. In the same manner. the rails il may be made for abutting surfaces. or the member as shown may have one of its base plates 2li bent over or cut ofi.
The method of interlocking the sheets Il is of distinct advantage in that the trim strip and its corresponding construction on the rails i3 eifectively seals the joint between the sheets, and no air can circulate through the joints to permit breathing and the resulting soiling of the surface with accumulated dust and dirt. Further, these trim strips add an attractive and finished touch to the surface in the style of paneling. The outer faces of the strips may be finished in colors contrasting to that of the sheets Il if desired.
'Ihe small conical projecting portions Ila on the inner surface of the sheets I2 cooperate with the sound absorbing pads l0 to produce a more efficient absorption of sound than is possible with perforated containers or retaining sheets heretofore used. With our construction the conical projections l2a have jagged or saw-tooth extremities which engage and distend the absorbent pad at a multiplicity of points on the ceiling or wall, giving the sound an opportunity to spread laterally through the apertures caused by the saw-toothed edge and across the outer surface of the absorbent pad, thus increasing the area exposed to the sound waves transmitted through the perforations.
The said jagged edged projections Ila furthermore, by engagement with the pads iii, prevent the pads from slipping or becoming displaced with reference to the retaining sheets. By the elimination of such slipping or displacement. caitraction and expansion, resulting in "breathing" action is substantially eliminated. s
It will. of course, be understood that various changes may be made in the form, details. arrangement and proportions of the various parts without departing from the scope of our invention. which, generally stad, consists in the construction Vcapable of carrying out the objects above set forth and inthe novel parts and combinations of parts disclosed and defined in the appended claims.
What is claimed is:-
1. In sound absorbing construction, a soft sound absorbing material disposed against a supporting surface, a plurality of polygonal facing sheets covering said material and having edges thereof disposed in close opposing relation, a plurality of rails secured to a supporting surface and having elements for engaging the opposing edges of said sheets. said sheets having limited flexibility to enable the same lto be bowed to permit engagement of opposite edges cf a sheet with a pair of such rails.
2. A sound absorbing construction comprising a sound absorbing medium, a series of nat sheet for retaining said absorbing medium. said sheets being disposed with certain of their edges in close opposing relation, a plurality of rail members having means for attaching to a supporting surface, means on said rail members for engaging and sealing said sheets at their adjacent edges. and means positioned at an angle to said rail members for engaging and sealing adjacent edges of the same sheet.
3. In sound absorbing construction. a pad of relatively soft, sound absorbing material. a dat facing sheet having a multiplicity of perforations formed therein, the inner surface of said sheet having projections formed about said perforations. said projections engaging said pad and preventing displacement thereof relative to said sheet and means for securing said sheet in spaced relation to a supporting surface with said pad disposed therebehind.
4. The structure set forth in claim 3 wherein said projections have jagged annular edges permitting lateral -distribution of sound across the outer surface of said absorbent pad.
DONALD F. ROSS. WALTER A. ELLIOTT.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US65181A US2077713A (en) | 1936-02-24 | 1936-02-24 | Acoustical material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US65181A US2077713A (en) | 1936-02-24 | 1936-02-24 | Acoustical material |
Publications (1)
Publication Number | Publication Date |
---|---|
US2077713A true US2077713A (en) | 1937-04-20 |
Family
ID=22060864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US65181A Expired - Lifetime US2077713A (en) | 1936-02-24 | 1936-02-24 | Acoustical material |
Country Status (1)
Country | Link |
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US (1) | US2077713A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2450911A (en) * | 1943-07-20 | 1948-10-12 | Armstrong Cork Co | Acoustical structure |
US2540331A (en) * | 1945-06-18 | 1951-02-06 | Rudolf F Hlavaty | Insulation |
US2553363A (en) * | 1945-11-09 | 1951-05-15 | Carl C Droeger | Building construction |
US2755882A (en) * | 1952-04-22 | 1956-07-24 | Maccaferri Mario | Acoustic tiles |
US2771164A (en) * | 1949-01-27 | 1956-11-20 | Western Engineering Associates | Wall construction |
US2785099A (en) * | 1950-09-05 | 1957-03-12 | Badham Insulation Company | Fire resisting insulating material and building construction embodying the same |
US2897551A (en) * | 1957-01-15 | 1959-08-04 | Fenestra Inc | Sound absorbing structure |
US3084402A (en) * | 1958-11-17 | 1963-04-09 | Mosaic Tile Company | Acoustical panel |
US3183996A (en) * | 1959-09-04 | 1965-05-18 | Forty Eight Insulations Inc | Acoustical structural panel |
US4627199A (en) * | 1984-09-24 | 1986-12-09 | Capaul Raymond W | Tackable acoustical structure |
US6122867A (en) * | 1997-12-02 | 2000-09-26 | Isover Saint-Gobain | Acoustic building structure |
US6640507B1 (en) * | 1999-09-23 | 2003-11-04 | Saint-Gobain Isover | Acoustic building structure |
US20070125011A1 (en) * | 2005-12-06 | 2007-06-07 | Weir Charles R | Acoustic partition for removable panel finishing system |
-
1936
- 1936-02-24 US US65181A patent/US2077713A/en not_active Expired - Lifetime
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2450911A (en) * | 1943-07-20 | 1948-10-12 | Armstrong Cork Co | Acoustical structure |
US2540331A (en) * | 1945-06-18 | 1951-02-06 | Rudolf F Hlavaty | Insulation |
US2553363A (en) * | 1945-11-09 | 1951-05-15 | Carl C Droeger | Building construction |
US2771164A (en) * | 1949-01-27 | 1956-11-20 | Western Engineering Associates | Wall construction |
US2785099A (en) * | 1950-09-05 | 1957-03-12 | Badham Insulation Company | Fire resisting insulating material and building construction embodying the same |
US2755882A (en) * | 1952-04-22 | 1956-07-24 | Maccaferri Mario | Acoustic tiles |
US2897551A (en) * | 1957-01-15 | 1959-08-04 | Fenestra Inc | Sound absorbing structure |
US3084402A (en) * | 1958-11-17 | 1963-04-09 | Mosaic Tile Company | Acoustical panel |
US3183996A (en) * | 1959-09-04 | 1965-05-18 | Forty Eight Insulations Inc | Acoustical structural panel |
US4627199A (en) * | 1984-09-24 | 1986-12-09 | Capaul Raymond W | Tackable acoustical structure |
US6122867A (en) * | 1997-12-02 | 2000-09-26 | Isover Saint-Gobain | Acoustic building structure |
US6640507B1 (en) * | 1999-09-23 | 2003-11-04 | Saint-Gobain Isover | Acoustic building structure |
CZ304662B6 (en) * | 1999-09-23 | 2014-08-27 | Saint-Gobain Isover | Acoustic building structure |
US20070125011A1 (en) * | 2005-12-06 | 2007-06-07 | Weir Charles R | Acoustic partition for removable panel finishing system |
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