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Патент USA US2137756

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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'?
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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.
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