Патент USA US2137756код для вставки
Nov. 22, 1938. 2,137,756 C. T. GOULD ET AL INSULATING PAD AND THE LIKE AND METHOD 0F MAKING SAME Filed March 17, 193'? «3,1 r, ¿ff \.~~ s* M: _,~\ Í., Il@ z (y) l Irwenìor: Charles Z Gould, J‘íerberZzMBonue- , Patented Nov. »'22, 1938 2,137,756` PATENT OFFICEy UNITED STATES 2,137,156 1Ns` \ `TING PAD AND THE LIKE AND vrnon oF MAKING SAME > charles T. dma and Herbert M. Bonney, Walpole, Mass. Application March 17, ‘,1937, Serial No. 131,424 8v Claims. (Cl. 154-28) This invention relates to cushioned padsl'which same during the construction of the pad or sub may be used for a variety of purposes, one of sequently thereto. \ which is as an insulating pad forV use in the ' The upper and lower sheets of material I0, »II walls and roofs of buildings, and >it'iurther re and the layer of filling material I2 interposed ' D lates to the «method of making the same. between them are united by a plurality of stitches Cl The main object of the invention is the pro-` I3, the locking portions of these stitches being duction of a cushioned pad, the elements of which beneath the> lower sheet- of material II. are united by a plurality of lock stitches so con When the elements of the pad are being stitched structed that the said pad may be greatly in together thel pad is somewhat compressed, as lo creased in thickness when theñlling material shown in Fig. 2. 10 >expands while permitting the opposite facesJ of ‘ This pad »in its vcompressed condition is fed the pad to remain ilat. and parallel. 4 ` intoa sewing machine by which the lock stitches , This object is attained by the means illustrated I3 are formed by suitable stitching mechanism. in the accompanying drawing. , During this operation as each loop is formed For the purpose of illustrating the invention, - by the stitching mechanism, it is seized and drawn 15 one preferred form thereof is illustrated in the out into elongated condition and extended above drawing, this form „having been found to give the upper sheet I0 as indicated at I4' in Figs. satisfactory and reliable results, although it is to be understood that the various instrumentalitles l and 2. 20 of which the invention consists can be variously arranged and organized, and the invention is is formed and then released. not limited to the precise arrangement and or- , ganization of these instrumentalities vas herein shown and described except as required by th 25 scope of the appended claims. Of the drawing- . ` The elongated loop I4 of each stitch is retained in- its extended position until the next stitch> I3v 20 . By .this means_each stitch I3 is very loosely formed making it possible for the upper and lower sheets Ill, II to further separate from each other when the pad is released from the sewing machine and the filling layer I2 begins to ex ' \ Y Figure 1 represents a plan of a pad embodying pand. Y . the' principles of the present invention, the » While the stitches I 3 are being formed the pad stitches» uniting the various elements thereof~ is about two inches in thickness as indicated in 30 beingshown `drawn out and elongated.l , p Figure 2 represents a section of the same on line 2, 2 on Fig. 1, the elongated loops oi'vthe » stitches being shown extending upwardly al though in practice they never would assume this position but would lie ñat on vthe `upper side of - the pad. ï ' Figure 3 represents an inverted plan of the Fig. 2, but when the filling material expands the sheets I 0, II- may be separated to such an extent that the pad will be four or iive inches thick as shown in Fig. 5, thus making a very soft and compressible cushion which may be used for a variety of purposes, such as car seats and cush 35 ions for the backs of the seats. . - Obviously, many kinds of ñlling material may pad and showing the lock stitches. , be used in the layer I2 accordìngto the purpose Figure 4 represents a plan o-f the pad after the the pad is to be used. . ' 40 layer of wool between the upper and lower sheets One of the prime objects .of/the invention is to 40 ' has expanded to its fullest extent. _provide a pad in which the .layer I2 will be made Figure 5 represents an elevation of4 the same. of glass or mineral wool anda pad thus made Figure 6 represents an enlarged detail of one 4is »particularly desirable for insulating material -of the-stitches uniting the various elements o'f in the walls and roofs of buildings. the ‘pad when `it has expanded to its fullest ex By making the layer I2 of glass or mineral wool tent, and . v v_ ' Figure 7 represents a detail showing the lock it will be ñreproof and also proof against vermin, which is of great advantage. vstitch on the bottom of .the pad. When the stitches I3 have been formed uniting Similar characters indicate like parts through the various elements Ill, -II and I2 oi.' the pad;(Il out the several figures of the drawing'. ' ' - In the drawing, III, II represent two sheets of the under side 4of the lower sheet- II has applied iibrous covering material between which is inter.. thereto an adhesive I5 extending over the lock posed a layer I2 of iluiïy expansible illling mate stitch’es which holds the stitches in position rela. rial such as wool the sheets III, II being of such tively to said sheet II, thus preventing any dis 55 a- characterl as _will prevent the tearing of the placement of the thread forming the stitches vI3 2 2,137,756 while the pad is expanding to take up a part of the slack in the loops I _4 of the stitches. ' In forming the pad the sheets of covering ma terial III, II are flat and in parallelism, and when the pad expands from the condition shown in Fig. 2 to the condition shown in Fig. 5, showing the fullest expansion of the pad, these sheets I0, II remain in parallelism. If a layer of ñlling material such as wool be-- tween two sheets was sewn together Vby tight stitches and then the `layer expanded, the sheets I0, II between the two rows of stitches would bulge out and the pad would have what is known asta biscuit eifect and obviously ~this would be objectionable, particularly where the pad is Yto be used inthe walls or roofs of buildings as an insulating device. In shipping the pads they may be compressed to a considerable extent with the surplus thread 20 in loops Il laying flat on the upper surface of the pad and. when unpacked at their destina~ tion and placed in the cavities they are to the filling material will immediately begin to pand and greatly increase the thickness of 25 pad without permitting the opposite faces of pad to get out of parallelism. The loops Il flll ex the the are of such a length as to permit the greatest ex pansion of the material between the two sheets without bending either sheet inwardly at any 30 point. The covering sheets III, II are preferably made of fibrous material having two sets of fibers cross ing each other. slsting of feeding to a sewing machine two sheets of tough material between which is interposed a thick layer of compressed expansible wool, unit ing said sheets and layer by a plurality of lock stitches, and drawing out the loop of each stitch above the upper sheet during the formation of the next stitch to a length sufficient to permit the extreme expansion of said wool. 2, The method of forming cushioned pads con sisting of feeding to a sewing machine two sheets of tough material between which is interposed a thick layer of compressed expansible wool, unit ing said sheets and layer by a plurality of lock stitches, drawing out the loop of each stitch above the upper sheet during the formation of the next stitch to a length suiiìcient to permit the extreme expansion of said wool, and subsequently releas ing the drawn out loop after the fcrmation of the next stitch. 3. As a new article of manufacture, a cushioned 20 pad consisting of two separated parallel sheets of covering material having between them a thick layer of compressed expansible material, said sheets being iiat and connected together by threads loosely stitched through said layer of ma terial with elongated loops of surplus thread above ' the upper sheet thereby permitting further sep ation of said sheets upon the expansion of said filling material, said sheets remaining flat and parallel during and after the expansion of said 30 filling material. v 4. As a new article of manufacture, an insu lating pad consisting of two separated parallel ' The covering sheets I0, II could be made either 35 of' paper or-cloth and in some high temperature insulation work these sheets might be made of sheets of covering material having between them a thick layer of compressed expansible mineral wool, said sheets being fiat and connected to woven asbestos or cloth made of >glasswool thread gether by threads loosely stitched through said layer of wool with elongated loops of surplus to resist extremely high steam temperatures up 40 to a top limit of approximately 900°. thread above the upper sheet thereby permitting Ordinarily the sheets are made of paper having I further separation of said sheets upon the ex 40 fibers embedded in asphalt between two sheets pension of said wool. said sheets remaining ñat or paper and calendered into a single sheet. and parallel during and after the expansion of However, the formation of such sheets I0, I I forms said wool. no part of the present invention as the material 5. As a new article of manufacture, a cushioned used in these sheets is a patented product and pad consisting of two separated parallel sheets of 45 purchased in the open market covering material having between them a thick While throughout the specification the word layer of compressed expansible filling material, "wool” is referred to as the filling material, this wool may be of glass-wool, mineral wool, natural wool, or of any loose, soft fibrous material, or said sheets being flat and connected together even formed of asbestos or kapok. . In Fig. 3 of the drawing is shown an adhesive I5 which extends over the lock stitches I3, this being a ready means of preventing the lock 55 stitches from movement relatively to the under sheet II. A It is obvious that other means might be em ployed to produce this same result. For in stance, it is only necessary that the adhesive be put on to the thread so that when it hardens the thread is sized stillly and has the effect of a kinked wire preventing the loops from drawing through each other. It is also possible to do this with a thread that is sized before sewing and applying moisture to it after sewing, the moisture giving the thread a permanent set in further separation of said sheets upon the ex pansion of said filling lmaterial, said stitches being locked together beneath the lower sheet and having above the upper sheet loops of sufli 55 cient length to permit the extreme expansion of said filling material without bending said sheets. 6. As a new article of manufacture, a cushioned pad consisting of two separated parallel sheets of covering material, a layer of compressed ex pansible filling material between said sheets, and a plurality of stitches extending through said fill ing material and sheets with loose elongated loops of surplus thread permitting a greatly increased separation of said sheets, the length of said loops being sufficient to permit said filling material to the >loop position. In constructing the pad it is expand to a thickness over twice as great as its intended that there shall always be some slack ness in the loops I4, even when the pad has fully thickness when compressed Without bending either sheet from its normal flat plane. 70 expanded.> It is believed that the operation and many ad vantages of the invention will be readily under stood without further description. ` Having thus described our invention, we claim: 75 by threads loosely stitched through said layer of filling material with elongated loops of surplus 50 thread above the upper sheet thereby permitting l. The method of forming cushioned pads con 7. As a new article of manufacture, a cushioned pad consistingof two flat sheets of ñbrous cover` ing material in parallelism with a layer of com pressed expansible filling material between them all connected togetherrby stitches, each stitch having an elongated loop of surplus thread ex 2, 137,756 tending above the upper sheet, said loops of sur plus thread being adapted to_ permit a much 3 loosely stitched through said layer of filling ma teria! with loops of thread extending above the upper sheet thereby permitting a greatly in greater separation of said sheets upon expansion of said ñlling material While permitting said » creased separation of said sheets upon the ex sheets to remain in'parallelism during and after pansion of said ñlling material without affecting C21 such expansion. the parallelism of said sheets, said stitches being 8. As a new article of manufacture, a cushioned locked together beneath the lower sheet and se pad consisting of two separated parallel sheets cured to said lower sheet by an adhesive sub of covering material having between them a thick stance. layer of compressed expansible filling material, CHARLEST. GOULD; 10 said‘ sheets being connected together by threads HERBERT M. BONNEY.