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Патент USA US2084490

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June 22, 1937.
I. J. E. HooPER
Filed Jan. 1e, 1937
2 sheets-sheet 1
June 22, 1937.
Fiied Jan. 16, 1957
2 Sheets-Sheet 2
.Il .
Patented `lune 22, 1937
¿ 2,084,490'`
James E. Hooper, Ruxton, Md., assignor to Wilr
liam E. Hooper and Sons Company, Wocdberry,
Md., a corporation of Maryland
Application January 16, 1937, Serial No. 120,958
6 Claims. (Cl. 24-33)
The invention relates to paper felts or drier
felts on which the material is carried forwardly
as it progresses from the condition of a pulp being
progressively dried or otherwise treated as it ad
5 vances.
Other products including laundry are
dried in this way.
The object of the invention is to provide an
dentation by the frayed edges, as in the prior con
»In accordance with the preferred form of the
invention, the folds which are thus abutted to
form the juncture of the supporting surfaces of
the two sections of felt being joined are actually
spaced back from the extreme end edges of the
improved seam or joint construction for drier
felt being joined and these end portions beyond
felts,A laundry aprons and the like whereby the
the first mentioned folds are turned `or folded
v'10 paper orpulp sheet or other material being treat
ïed is supported out of Contact with the clips or
-other fastening means which join the ends of the
forwardly under or lback of the felt or apron.
The multiple folds formed in each felt end are
felt the protecting means and the portions to
which the clips are attached being of the same
15 material integral With and part of the main strip
composing the felt or apron.
In the past the ends to be joined have been
strengthened by attachment thereto of reinforc
ing strips of duck or similar materials which are
U20 different from the felt in their action on the
-paper and the absorption of the moisture so that
though they are attached to the back of the felt
there is a tendency to create a difference in the
density and in the nature of the paper web as
then secured together by riveting, stapling, sew
ing or cementing and the clips are attached to
Ythese last mentioned forwardly folded ends be
neath or back of the folds or flaps first mentioned
as forming the abutting edges of the two sections
of felt at the‘paper supporting surfaces.
The end edges to which the clips are attached
may either be doubled by folding and then secured
or may be single and if desired treated by im l20
pregnation with resinous compounds, bakelite or
vthe like. The abutting folds forming the meeting
ends of the felt at the top surface may be either
over and in line with the clips or other joint orY
:l25fto the areas which overly the joints. Also the spaced away from the clips by shortening thefold 25
vjoints of »the prior art have been so formed that on one'end and lengthening the fold on the other
the ends of the felt which support the paper web end thus further protecting the paper from con
near the joint are spaced apart over the clips. - tact with the clips or it may be located in its rela
'I'hese ends become frayed in use and the frayed jtion tothe clips as desired.
',130 portions become turned upwardly extending _ In addition to forming a completely and per
above the web supporting surface, increasing the Vmanently closed joint at the web supporting sur
space between the felt ends so that the clips are face which joint except for the fastening clips or
exposed permitting the paper or >pulp Web in the like is composed of the same uniform ma
more or less moist condition to come into contact terial composing the remainder of the felt, avoid
-. 35 with the clips whereby it is permanently marked ing any variation of action in the different parts' 35
--and discolored and the frayed ends of the felt of -the felt,-the improved construction has the
è rhave a similar action by indenting and thus i advantage of greatly improved protection of the
>marking the web in the vicinity of the joint-be -«paper from the clips, extreme durability prevent
j ing fraying of the ends and marking the paper
or opening of the joint and the improved con 40
has the further advantage that thus
struction the adjacent edges of the felt drier ends
tween the ends of the felt.
m40- A’In -accordance with therimproved joint con
above the clips are formed by folding the felt
formed by folding the integral edge portions of
The paper is not only protected from Contact with
the clips and consequent marking and discolora
integral attaching and Contact folds have the
material near the joint back upon itself against `felt and fastening by riveting, stapling, sewing '
the back side of the apron or drier felt, the folded or cementing, the joint `is formed more quickly
¿p45 edges of the felt being, 'when the joint> is closed, ’ and more cheaply than by the addition of rein '45
forcing strips, also the 'formation of these edge
placed in close abutting relation completely clos
ing the supporting surface of the felt at the joint ` contacting and joint attaching folds of the same
>so that they support the paper or pulp above and material integral with the remainder of the felt
completely out of contact with the clips, and, makes it easy by using the weave lines as a guide
-z ,50 by avoiding the presentation of unfinished or to form more quickly astraight joint at right
exposed edges of the felt at this point, they elim ‘ angles to the selvage edges at the sides than by
inate fraying so that the yclosure is permanent. the old method of attached reinforce and these
:355 ’tion but is also protected from marking andin
further advantage that they pull uniformly and
~keep the belt straight under tension. The newv 155
construction also has the advantage that the
clips are attached directly to the edges of the
felt or apron material instead of to a separate at
tached reinforce so that there can be no breaking
of the belt due to shearing of the reinforce.
It is a further advantage of the invention that
the better quality belts being provided with an
asbestos ply for engagement with the paper which
contacts the heating drums, the attaching fold
contains an asbestos ply where the clips are at
tached sothat it affords permanent resistance
` to overheating and there is no danger of pull
ing the clips from the fabric on this account.
'tratedtwo forms of joint embodying the inven
toughened by impregnating with suitable mate
rial of a resinous nature or bakelite or the like
at I8'. In this construction, Figure 5, the two
folds or pleats provide three thicknesses Vof the 10
material I9, 2Q and 2| secured in any suitable
manner as previously described. The heat re
sisting material as asbestos when used is believed '
to give better protection from heating and »to '
VIn the accompanying drawings, I have illus
tenings the other features of this construction
being similar to that of Figures 1, 2 and 3.
The construction of Figure 5 is similar to that
of Figure 4 except that the clip supporting ends
I8 instead of being folded as at 9, 9 and hence
doubled are of a single thickness being preferably
Figure 1 is a plan View of the felt or apron at
and adjacent the joint looking from the paper
web supporting side.
Figure 2 is a similar view of the joint and
>adjacent portions of the felt or apron looking at
assist in avoiding any tendency to loosen. the clips
8 on account of such heating.
Without regard to the nature of the material
of which the felt or apron is made, it is of im
portance that while the paper web or other prod
uct being treated is fully protected from the clips
by the contacting folds substantially inthe sup
the same from the opposite side to Figure 1.
portingrsurface of the felt or apron and formed
Figure 3 is a section on the line 3, 3 in Figure 1 i integrally therewith of the same piece of mate
in which the protecting naps or pleats contact on rial, the attaching portions, to which the clips are
a line directly over the clips. .
secured beneath said folds, may be part of the 25
Figure 4 is a section on the same line showing integral felt or apron and notsubject to separa
substantially the same form of joint in which the tion from the apron by shearing as when separate
protecting flaps or folds which support therma
strips are attached to the back 'of the apron for
terial o-ut of contact with the clips abut or meet
30 ona line spaced away from the -clips.
The joint constructionshown by the Yprovision .30
Figure 5 is a section similar to Figure 4, the of folded edges ofthe felt material, folded edges
arrangement being slightly different in that the of the adjacent sections of felt being in close con
ends of the felt to which the clips are attached tact, said folds being relatively resilient thus
instead of being doubled are of a single thickness maintaining the contact after long use, afford a
and may be treated by impregnation to prevent permanent` support for the paper or other mate 35
pulling of the clips.
rial out of contact with the clips or other joint
Figure 6 is a bottom planV View of the joint Vmechanism and these folds or> foldedflaps being
Figure Y5.
composed of continuous integral portions of fabric
Referring to the drawings by numerals each of knot subject to fraying and therefore dol not mark
which is used to »indicate the same or similar parts or indent the paper material and they retain their 40
in the different figures the construction Figures initial condition and close contact after an in
1, 2 and 3 comprises felt or similar material I
definitely long period of use without any tendency
composing the drier felt'or apron 2. This felt to fray. j
It is of further advantage that the folds or
particularly when used .in the manufacture of
45 paper is preferably provided with a web engag
flaps forming the joint being formed by folding 45
ing >or upper ply 4 of asbestos the lower ply 3 and fastening the integral fabric comprising the
being of cotton, Wool or other suitable textile felt or apron, the joint is much more easily vand
fiber. The asbestos may be omitted from paper cheaplyformed, is easier to align and much less
felts as well as other dryer aprons. 'I‘vvo end apt to get out of alignment than when` formed of
portions 5 and» S of this drier feltor apron are Yseparate reinforcement strips or parts, the lines 50
shown as connected by a joint 1.»"In this form vof the weave being helpfuly in making a true'joint '
of joint the end portions to which the clips 8 at right angles to the selvage Vedges 25 ofthe
are attached are folded forming clip supporting sides. It is alsofound that the end flaps and
S to which Vthe clips 8 or other fastenings the folds being ofthe same material as the Vfelt
are attached in kany suitable manner. Inwardly have the same effect on the paper web'as does the Y 55
of the felt ends in the direction of their length remainder ofthe 'felt avoiding any lack of uni
the felt end portions 5‘, ë are again folded forming `V>formity incident to the use of any other reinforce.
I have thus described an integral foldgand
protecting flaps or pleats I0 and I0’ which when
the clips 8 are attached have their bends forced protected joint for paper` felts, Ílaundry aprons
into close contact at II. Beyond the folds I0, >and the like embodying the features of the in-fv`
the folded clip supporting edges 9 ,are also Vfolded ‘ vention, the description being specific and inde
forwardly toward the joint forming a fold at I3 tail in order that the manner of constructing,
applying, operating and using the invention may
and the multiple thicknesses of material result
be fully understood, however, the specific- terms
any convenient order or sequence are fastened herein are used descriptively rather than in a
together backwardly of the clips by riveting,
stitching or stapling at I2 or they may if desired
be cemented for this'purpose. 'I'he word clip is
y70 used to designate any suitable end fastening.
Figure 4 shows a foid I4 corresponding to the
fold I0 of increased width and the fold I5 cor
responding to the fold Iii’ of decreased width dis
placing the line of contact I6 to the right so that
it is spaced away from the clips 8 or other fas
limiting sense, the scope of theinvention being
defined in the claims.
What I claim as new and desire to secure by
Letters Patent is:
A dryer felt or apron having a joint com-c- 70
prlsing two integral e-nd portions of the material
composing the felt attached to which end por
tions are detachable means for joining the ends
of the drier felt to close said joint, an integrally
woven portion of the felt material on each side> 75
said ends the joint also comprising folded por
tions on each side of said joint, said folded por
tions being composed of the felt material integral
necting two ends of said apron said joint com
prising a fold on each side of said joint, said folds
being formed of the apron fabric and integral
with the remainder of the fabric, the bends of the
respective folds abutting in close contact substan
tially in the supporting surface of the apron, the
edge portions of said fabric beyond said ñrst
mentioned folds being folded toward the plane cf
said bends beneath said first mentioned folds and
having cooperating fastening means for said re 10
spective ends attached thereto, and covered by
said first mentioned folds, the fabric being im
pregnated to prevent loosening of the fastening
and continuous with the remainder of the felt
means and the respective folds on each side of
of said joint and adjacent each of said ends
being folded upon itself and fastening means
securing said folds to said end portions the bends
of the folds on each side of the joint being in
closely abutted relation substantially in the sup
porting surface of the felt closing the supporting
surface of the felt when the joint is closed by the
said detachable means.
2. A paper felt joint comprising adjacent ends
10 of said felt and belt fastening means for joining
15 and having supporting surfaces substantially
ñush with the supporting surfaces of the main
felt and having the bends of said folds on the re
spective ends of said felt and on the opposite
sides of said joint in close abutting relation when
20 the joint is closed the felt material on each side
the joint having securing _means for retaining 15
the folds in fixed relation.
5. A fabric drier apron for paper or the like
having a joint comprising folded portions of the
apron fabric integral therewith on each side of
the joint, the bends of the folds meeting substan~
tially in the supporting plane of the apron, said
folds being secured and having additional means
of the joint being further folded on the back
side of Said felt, the multiple folds of each felt
end being secured together and the belt fastening v attached to each fold on the side remote from
said supporting surface and fastening members
means being secured to said back folds.
3. A fabric drier apron having a joint con
necting two ends of said apron said joint corn
prising a fold on each side of said joint, said
folds being formed of the apron fabric and
woven integrally with the remainder of the apron
30 fabric, the bends of the folds abutting substan
tially in the supporting surface of the apron,
portions of said fabric beyond said first men
tioned folds being folded toward the plane of
said meeting bends, and overlying said ñrst men
tioned folds on the back side of the apron, said
latter folded portion being further folded to
double thickness and having cooperating fasten
ing means for said respective ends attached
4. A fabric drier apron having a joint con
for the joint secured to said means.
6. A fabric drier `apron for paper or the like
having a joint comprising folded portions of the
apron fabric woven integrally with the fabric of
said apron on each side of said joint, the bends
of the folds meeting substantially in the sup 30
porting surface of the apron when the joint is
closed said folds being respectively secured and
having additional means secured to each fold on
the side remote from said supporting surface and
fastening members for the joint secured to said 35
means, the line of contact of said abutting bends
of the folds being spaced away from said fasten
ing means in the direction of the length of said
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