US2649627A - Method of attaching mats - Google Patents

Description

Aug. 25, 1953 A. l.. GUsTlN, .JR

METHOD OF' ATTACHING MATS Filed Jan. 2l, 1950 Patented Aug. 2n5, 1953 2,649,627 'i METHOD; 0F ATTACHING' Mars Alberti. L.; ;Gustin, t Jr., JchnsonzCounty, '-LKans., .zassignorr to; Gnustix-BaccnfManufacturingComfffpanyif a-corporation offMiSsouri Application' January 21, 195p0SeljialNoi '139,950

8 :Glaims.

il ff-Thisfinvention relates/tothe applicationof re- 4'-silient 'compressiblemats tomwallsvorothersur- .'rfaces; and 'refers moreparticularly" vto` afmethod "fof r-appllyingE 4resilient :compressible mat which -fai'ill`l insure" better-1 finsulati-ve properties adjacent it'ainedf by having Ethewmate'rialfof considerable rthzck-ness1 'at all1-points-fwhere optimal-"insulation isis' desired. lorweverftheiinherent nature 'of the frmate'rial;y in .itsvrresilience'l =and-usua11ysponge- -frlikevstafte; :causesiitf fto"l iwcompressed beneath whatever fastening means areused/to-attachitfO 'securely-:to1 a surface. This compression of the @material .adjacentf"the Ifastening "means,= usually fib'attens for 'f` fasteners -with appreciable con- :fined-iama atl that hp'oint land. -hence a 4'substantial fimpairment' of the` -insul'ative properties.

It-can beaseenfthlatfthere is a needfor amore ',:uniform'l rinsulation 11 surface, y and it' desirable 'ih'tl-fe1='efore` thatay f'm'ethcd bf fapply-ingt tresi-lient :moz-npressible:mat:be1 provided infwhichlthisfobvious disadvantageof the loss of-iinsnlation-'atfthe @fasteningfmeansfbef overcome.

ff'Eorthis-reasonit isI yan--olojectfofmy invenrtionftoeprovide awmethodv fof application of -re- "isilient-compressible mat inlfwhich a` maximum of 1'finsulativeffeffect may belfobtained- -adj acent the Mmeansifwhich are--used to-secure the mat ftov a surface. -feature fin connection Ptherewith -is .-'theflslittingY "of ifthe surface of the compressed mat adjacent lthe-edges of i the fastening means .litofallowfithe :mat toi-V decompress and prov-ide a wnormalthickness iat thatA point.

"-"It is=-often desirable that m'at ofthey nature de- -f layers,` 'inwhich 'caselthe successive= Amats vare ap- 'pIiedWithsimilar lfasteningi means. =`HoWever,- it is' frequently-found that, due -to the nature-'of ffthe-:slirfac'e'l toY which v'the mat isapplied, it `is wmeinberxfilhis isf'especially 1trueliin the case- .-wherethefmatf-is applied to ai Waltofsteel` 01' ('Qlio-V-fi) 1 2 flotherfmetal, askin' the example of. arailW-ay car, `7whereinK members ofwood or .softer composition *have'beenfprexedfto :the'vmetal vsurface at in- :rtervals' to= provide Aaereceptive surface:I forirthe r `n`fasteningmeans.cthe mat. In such cases'V as rHthose-described the alignment 'of compressed mat Lsurfaces.. adiacenti l1the`--loattens or :,otherameans vagain--vdefeats` the .purpose of :mat thick-ness' for insulationI and results in. an impairedinsulation wf surface iat those 1points.

IIt--is a"iurther`object ofmy` inventiom'thereforegto provide. a method of applying? a vplu-ral- 'ity-w'of successi-vewlayers of resilient compressible mat to a isurface'vinwwhich af minimum lossfrof 1 i )winsulative effect :is-attained adjacentthe attach- I `vment surfaceswof", the successive.layers 'v A-' featuref in Y'connectioir-therewith is the slitting .fof "the lcompressed matfsuriaces adjacent.eachfiasten- PV-`ingr means to allow decompression *of'fthe-mat :at

that point to its normal thickness.

`"fCther and" further fobj ectsV will appear. --in the cc 1-ns'e-=oiitheollowingdescription. Inthe accompanyi-ngf'drawings-I whichv form a partI vof the jf instant specificationv andare. to be .read .l in ccnjunctiontherewith; and in: whichilike .reference =-f numerals are useditoz-indicatef'like partsfin'r'the r various Aviews,

Eig.l 1z` is anvertical section through a surface f n`tofwhiclra'- resi1ient' compressible mat --has lbeen aoappliedaccordingf-to the-method ofthis invenrtion, and

'-1 Fig. 2-is afragmentary-vertical section through f 'the'wallsf'of a-railway-- car tc- Which successive layers of resilient com-pressiblemat-have been Myinvention-may readilybe appreciated from ff-Figi 1- which-shows `an insulatingfmat 3 -fastened "to a Wallor-fsimilar-su'rface I-by laterally spaced 40; para'llelbatten-strips 5,-'each-strip beingsecured i *to*the-"Walle-by -bolts- 6-spacedalong its length 'which-serve -toidrawftheastrip toward; the Wall 4corrrpiessirlg andclamping'the'mat as shown at i 1. `Thefmatis-of resilient material; forrexam- 45f-ple;"vegetable Yand/or mineral` bers bonded Vby a'resin atstheir` junctions to integrate them into amunitary Asprinlgyvmat-structure having a labyrinth "o' open interstices.

*In'fclam'ping amat l'of vthis character 'G0/.the

50 wall atrintervalswith battensyit will be noted that the lmat is compressedvnot only inthe re- "gion fdirectly under each, hatten but also to a lesser; 'degree-- in'the `regions immediately .adjafce'nt Vth've sides 'ofiv the batteri. The insulative 55"valueof*the-'mat:in the compressed region 1 obviously is less than at the points where it is unrestrained and of full thickness, but this loss and its insulating properties is somewhat offset by the insulating effect offered by the batten 5 superimposed over this region. However, the compressed regions immediately adjacent the batten form an open air space or notch 8, so here there is aloss of insulating effectv without any corresponding gain whatever through the agency of an auxiliary covering.

The salient novelty of my invention resides in recovery of the loss of insulating effect represented by the open notch 8 along the margins of the securing member. This I accomplish sim` ply by placing the blade of a knife 9 or other sharp cutting instrument fiat against first one marginal edge 5a of the batten and then against the other, and in each case drawing therknife along the batten to out a slit in the mat on either side of the compressed region 1. By so doing it will be seen that I sever the fibers extending from the compressed region I across the plane of edge 5a so that the severed portions lying out from under the batten are permitted to spring back up to their unrestrained position. The slit naturally must not extend all the way through the mat but must be deep enough to permit decompression of the mat beside the batten substantially to full, unrestrained thickness. In this fashion the notches 8 are eliminated and full insulating value of the mat is obtained close to the battens as well as farther away. The finished assembly also has a much neater appearance than before. The lower batten 5 in Fig. 1 shows the appearance of the mat after being treated in accordance with my method; the lower edge of the upper edge of the batten shows the treatment in process, while the upper edge illustrates the conformation of the mat prior to slitting.

Fig. 2 illustrates the application of the foregoing method to the insulation of a railroad car wherein two thicknesses or layers of mat are employed. The rst layer I I is positioned against the inner walls I2, and against this layer of mat are placed battens I3, beneath which the mat is compressed, the battens and compressed mat being secured to the car-wall side members I 4. A cutting instrument is then inserted with its blade surface flush with the batten edges, and the compressed mat adjacent the battens is slit to a depth which will allow the mat to vdecompress at the batten edges to its normal thickness as described hereinbefore. y

The second layer of mat l5 lis now placed over the first layer, and other battens I6 are positioned over the battens I3 of the preceding layer. The mat is compressed beneath the batten and the batten and mat are similarly secured to the members I3 beneath the batten and the batten and mat are similarly secured to the members I3 beneath the mat. Now the compressed mat adjacent the batten edges is slit, as before, to a1- low the decompression of the mat along the length of the batten. Repeating this operation with each succeeding layer of mat applied provides a minimum of compressed mat surfaces at the edges Where the mats are fastened, thereby presenting a more normal insulating structure adjacent the fastening means and hence a resultant better insulation at that point. O-Ver the last layer of mat it is contemplated that a panel of woodYI'I may be placed to offer a more durable inner wall surface for the car. The same method of application may be used for the mat 4 which is applied under the floor surface I8 of the car.

It should be understood that the foregoing illustration of the application of thermal or acoustical insulation mat to railway cars is merely exemplary and should in no way be construed as limiting the invention, as it will be seen that it may apply toallforms `of resilient compressible mat in their application to any surfaces for insulative or other purposes.

From the foregoing it will be seen that my invention is well adapted to attain the ends and objects hereinbefore set forth together with other advantages which are obvious and which are inherent to the invention.

It will be understood that certain features and subcombinations are of utility and may be employed without reference to other features and subcombinations. 'I'his is contemplated by and is within the scope of the claims.

Inasmuch as many possible embodiments may lbe made of the invention without departing from the scope thereof, it is to be understood thatall matter herein set forth or shown in the drawings is to be interpreted as illustrative and not in a limiting sense. i

Having thus described my invention, I claim:

1. The method of supporting a resilient, compressible mat which comprises clamping and compressing the mat at spaced intervals between fixed fastening members positioned against opposite faces of the mat, and slitting the compressed mat partially therethrough along the margin of one of the fastening members adjacent one of said intervals to permit the mat adjacent said one member to decompress to substantially its normal unrestrained thickness, the uncut section of said mat serving to anchor the unconined area to the area clamped between the fastening members.

2. The method of supporting a resilient,com pressible mat which comprises clamping and compressing the mat at spaced intervals between fixed fastening members positioned againstopposite faces of the mat, and incising the mat to a fraction ofk its thickness along the margin of one of the fastening members adjacent one of said intervals thereby to permit the portion of the mat adjacent said one member to decompress, the uncut fraction of'said mat serving to anchor the unconned area of the mat vto the area clamped between the'fastening members.

3. The method of supporting a resiliently compressible bonded, fibrous mat which comprises clamping and compressing the mat at spaced intervals between fixed fastening members positioned against opposite faces of the mat, and severing a substantial portion of the fibers in the mat without completelysevering the mat Where they cross the plane of an edge of one clamping member adjacent one of said. intervals which `is transverse to the clamping face of that member, the uncut portion of said fibers serving to anchor the unconned area of the mat to the area clamped between the fastening members.

4. A method ofv applying aresilientcompressible mat to a supporting surface comprising the steps of positioning one face of the mat against the surface, placing clamping members of limited frontal area at spaced intervals against the opposite face of the mat, advancing the clamping members toward said surface and securing them to the surface to vhold and compress the mat, and incising the compressed mat partially therethrough V adjacent the edgesv of the clamping members to a depth which will allow the mat to decompress substantially to its normal unrestrained thickness, the uncut section of said mat serving to anchor the unconned area of the rnat to the area clamped between the fastening members.

5. A method of applying a resilient compressible mat to a supporting surface comprising the steps of positioning,r one face of the mat against the surface, placing battens at spaced intervals against the opposite face of the mat, advancing the battens toward said surface to `hold the mat and compress the portions under said battens against the surface, inserting a blade into the mat while holding the blade flush with the longitudinal edge of a batten, and drawing the blade along said edge of the batteri to slit said mat partially therethrough to a depth which will allow decompression of the mat adjacent the batten edge substantially to its normal unrestrained thickness, the uncut section of said mat serving to anchor the unconined area of the mat to the area clamped between the fastening members- 6. In a method of applying a resilient, cornpressible thermal insulating mat to a supporting surface wherein the mat is compressed beneath spaced battens which secure it to the supporting surface, the step of drawing a sharpened blade along the edges of each batten to slit the compressed mat partially therethrough adjacent the battens to a depth allowing decompression of the mat to its normal thickness adjacent the batteri edges, the uncut section of said mat serving to anchor the unconned area of the mat to the area clamped between the fastening members.

7. In a method of applying a resilient, cornpressible acoustical insulating mat to a supporting surface wherein the mat is compressed beneath spaced battens which secure it to the supporting surface, the step of drawing a sharpened blade along the edges of each batten to slit the compressed mat partially therethrough to a depth allowing decompression of the mat to its normal thickness adjacent the batteri edges, the uncut section of said mat serving to anchor the unconiined area of the mat to the area clamped between t'ne fastening members.

8. A method of applying successive layers of resilient compressible mat to a supporting surface, including the steps of positioning a first layer of mat against the surface, placing battens against the exposed face of the mat, advancing the battens toward said surface and securing them to the surface to hold and compress the mat, slitting the compressed mat partially therethrough adjacent the hatten edges and along their length to a depth allowing decompression of the mat substantially to its normal unrestrained thickness adjacent the batten edges, placing another layer of mat over the first mentioned layer, positioning additional battens against the exposed face of the second mat layer and over said first battens, advancing said additional battens toward said first battens and securing them thereto to hold and compress said second mat layer, and slitting the second mat layer partially therethrough adjacent the edges of said second battens along their length to a depth allowing decompression of the second mat substantially to its normal unrestrained thickness along the batten edges.

ALBERT L. GUSTIN, JR.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 2,137,883 Ross Nov. 22, 1938 2,239,109 Lundvall Apr. 22, 1941 2,245,611 Schultz June 17, 1941 2,326,717 Zeidler Aug. 10, 1943

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