US2084490A - Drier felt - Google Patents

Description

June 22, 1937. I. J. E. HooPER 2,084,490

DRIER FELT Filed Jan. 1e, 1937 2 sheets-sheet 1 J. E. HOOPER June 22, 1937.

DRIER FELT Fiied Jan. 16, 1957 2 Sheets-Sheet 2 AVM mvAvAv MUM vances.

Patented `lune 22, 1937 PATENT OFFICE DRIER FELT James E. Hooper, Ruxton, Md., assignor to Wilrliam E. Hooper and Sons Company, Wocdberry,

Md., a corporation of Maryland Application January 16, 1937, Serial No. 120,958

6 Claims.

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- Other products including laundry are dried in this way.

The object of the invention is to provide an improved seam or joint construction for drier felts,A laundry aprons and the like whereby the v'10 paper orpulp sheet or other material being treat- :l25fto the areas which overly the joints.

ed is supported out of Contact with the clips or other fastening means which join the ends of the felt the protecting means and the portions to which the clips are attached being of the same 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 reinforcing strips of duck or similar materials which are U 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 Also the vjoints of the prior art have been so formed that the ends of the felt which support the paper web near the joint are spaced apart over the clips. 'I'hese ends become frayed in use and the frayed ',130 portions become turned upwardly extending above the web supporting surface, increasing the space between the felt ends so that the clips are exposed permitting the paper or pulp Web in more or less moist condition to come into contact 35 with the clips whereby it is permanently marked --and discolored and the frayed ends of the felt rhave a similar action by indenting and thus marking the web in the vicinity of the joint-between the ends of the felt.

m40- AIn -accordance with therimproved joint construction the adjacent edges of the felt drier ends above the clips are formed by folding the felt material near the joint back upon itself against the back side of the apron or drier felt, the folded p45 edges of the felt being, 'when the joint is closed,

placed in close abutting relation completely closing the supporting surface of the felt at the joint so that they support the paper or pulp above and completely out of contact with the clips, and,

-z ,50 by avoiding the presentation of unfinished or exposed edges of the felt at this point, they eliminate fraying so that the yclosure is permanent. The paper is not only protected from Contact with the clips and consequent marking and discolora- :355 tion but is also protected from marking andindentation by the frayed edges, as in the prior construction. Y

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 felt being joined and these end portions beyond the first mentioned folds are turned `or folded forwardly under or lback of the felt or apron. The multiple folds formed in each felt end are then secured together by riveting, stapling, sewing or cementing and the clips are attached to Ythese last mentioned forwardly folded ends beneath or back of the folds or flaps first mentioned as forming the abutting edges of the two sections of felt at thepaper 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 impregnation 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 ing any variation of action in the different parts' of the felt,the improved construction has the i advantage of greatly improved protection of the paper from the clips, extreme durability preventj ing fraying of the ends and marking the paper or opening of the joint and the improved construction has the further advantage that thus formed by folding the integral edge portions of `felt and fastening by riveting, stapling, sewing or cementing, the joint `is formed more quickly and more cheaply than by the addition of reinforcing strips, also the 'formation of these edge contacting and joint attaching folds of the same material integral with the remainder of the felt makes it easy by using the weave lines as a guide to form more quickly astraight joint at right angles to the selvage edges at the sides than by the old method of attached reinforce and these integral attaching and Contact folds have the further advantage that they pull uniformly and -keep the belt straight under tension. The newv to overheating and there is no danger of pull- 'tratedtwo forms of joint ing the clips from the fabric on this account.

VIn the accompanying drawings, I have illustion. i Figure 1 is a plan View of the felt or apron at and adjacent the joint looking from the paper web supporting side. V`

Figure 2 is a similar view of the joint and adjacent portions of the felt or apron looking at the same from the opposite side to Figure 1.

Figure 3 is a section on the line 3, 3 in Figure 1 in which the protecting naps or pleats contact on a line directly over the clips.

Figure 4 is a section on the same line showing substantially the same form of joint in which the protecting flaps or folds which support thermaterial o-ut of contact with the clips abut or meet ona line spaced away from the clips.

Figure 5 is a section similar to Figure 4, the

arrangement being slightly different in that the ends of the felt to which the clips are attached instead of being doubled are of a single thickness and may be treated by impregnation to prevent pulling of the clips.

Figure 6 is a bottom planV Figure Y5. Y

Referring to the drawings by numerals each of which is used to indicate the same or similar parts in the different figures the construction Figures 1, 2 and 3 comprises felt or similar material I composing the drier felt'or apron 2. This felt particularly when used .in the manufacture of paper is preferably provided with a web engaging or upper ply 4 of asbestos the lower ply 3 being of cotton, Wool or other suitable textile fiber. The asbestos may be omitted from paper felts as well as other dryer aprons. 'Ivvo end portions 5 and S of this drier feltor apron are shown as connected by a joint 1."In this form of joint the end portions to which the clips 8 are attached are folded forming clip supporting View of the joint redges S to which Vthe clips 8 or other fastenings are attached in kany suitable manner. Inwardly of the felt ends in the direction of their length the felt end portions 5, are again folded forming the folded clip supporting edges 9 ,are also Vfolded forwardly toward the joint forming a fold at I3 and the multiple thicknesses of material resulting from the three folds which may be formed in any convenient order or sequence are fastened 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 used to designate any suitable end fastening.

Figure 4 shows a foid I4 corresponding to the fold I of increased width and the fold I5 corresponding to the fold Iii of decreased width displacing the line of contact I6 to the right so that it is spaced away from the clips 8 or other fasembodying the inventenings the other features of this construction being similar to that of Figures 1, 2 and 3.

The construction of Figure 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 toughened by impregnating with suitable material 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 material I9, 2Q and 2| secured in any suitable manner as previously described. The heat resisting material as asbestos when used is believed to give better protection from heating and to assist in avoiding any tendency to loosen. the clips 8 on account of such heating. j

Without regard to the nature of the material of which the felt or apron is made, it is of importance that while the paper web or other product being treated is fully protected from the clips by the contacting folds substantially inthe supportingrsurface of the felt or apron and formed i integrally therewith of the same piece of material, the attaching portions, to which the clips are secured beneath said folds, may be part of the integral felt or apron and notsubject to separation from the apron by shearing as when separate strips are attached to the back 'of the apron for this purpose. k

The joint constructionshown by the Yprovision of folded edges ofthe felt material, folded edges of the adjacent sections of felt being in close contact, said folds being relatively resilient thus maintaining the contact after long use, afford a permanent` support for the paper or other material out of contact with the clips or other joint Vmechanism and these folds or foldedflaps being composed of continuous integral portions of fabric knot subject to fraying and therefore dol not mark Yseparate reinforcement strips or parts, the lines vof the weave being helpfuly in making a true'joint at right angles to the selvage Vedges 25 ofthe sides. It is alsofound that the end flaps and the folds being ofthe same material as the Vfelt have the same effect on the paper web'as does the Y remainder ofthe 'felt avoiding any lack of uni- `V formity incident to the use of any other reinforce.

I have thus described an integral foldgand protected joint for paper` felts, laundry aprons and the like embodying the features of the in-fv` vention, the description being specific and indetail in order that the manner of constructing, applying, operating and using the invention may be fully understood, however, the specificterms herein are used descriptively rather than in a 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 prlsing two integral e-nd portions of the material composing the felt attached to which end portions 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 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 supporting 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 of said felt and belt fastening means for joining said ends the joint also comprising folded portions on each side of said joint, said folded portions being composed of the felt material integral and continuous with the remainder of the felt and having supporting surfaces substantially ush with the supporting surfaces of the main felt and having the bends of said folds on the respective ends of said felt and on the opposite sides of said joint in close abutting relation when the joint is closed the felt material on each side 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 means being secured to said back folds.

3. A fabric drier apron having a joint connecting two ends of said apron said joint cornprising 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 fabric, the bends of the folds abutting substantially in the supporting surface of the apron, portions of said fabric beyond said first mentioned folds being folded toward the plane of said meeting bends, and overlying said rst mentioned folds on the back side of the apron, said latter folded portion being further folded to double thickness and having cooperating fastening means for said respective ends attached thereto.

4. A fabric drier apron having a joint connecting two ends of said apron said joint comprising 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 substantially in the supporting surface of the apron, the edge portions of said fabric beyond said rst mentioned folds being folded toward the plane cf said bends beneath said first mentioned folds and having cooperating fastening means for said respective ends attached thereto, and covered by said first mentioned folds, the fabric being impregnated to prevent loosening of the fastening means and the respective folds on each side of the joint having securing means for retaining 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 substantially in the supporting plane of the apron, said folds being secured and having additional means v attached to each fold on the side remote from said supporting surface and fastening members 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 supporting 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 means, the line of contact of said abutting bends of the folds being spaced away from said fastening means in the direction of the length of said apron.

JAMES E. I-IOOPER.

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