US1602635A - Method of making fiber reed - Google Patents

Description

Oct. 12 1926. 1,602,635

E. F. BALDWIN ET AL I METHOD OF MAKING FIBER REED Filed March 25, 1926 3 Sheets-Sheet 1 Oct. 12 1926.

E. F. BALDWIN ET AL METHOD OF MAKING FIBER REED Filed March 25. 1926 3 Sheets-Sheet and-J \k I 4 1r Patented Oct. 12, 1926.

PATENT OFFICE.

nE'rnon 0E MAKING FIBER REED.

Applicationlled March-25, 1826-. Serial No; 97,469.-

This invention relates to a method. of making an artificialor fiber reed adaptedv for use in weaving covering material suitablefor bady carriage bodies and for many similar purposes. Such fiber reed has recently come into extensive use and is com: monly made from a long strip of strong, heavy paper, such as kraft paper, the process involving the folding of the: strip longitudinally and the securing of the folded layers together by a suitable gum or glue.

Ourinvention relates to an improved process or method of forming afiber reed'of the type above described, by which an improved product is cheaply and quickly manufactured.

We have also disclosed in this application a machine capable .of performing our improved process to great advantage,tl1is machine forming the subject matter of a co-.

pending application Serial. No. 97,4 68, filed March 25, 19 26, and also of certain other applications relating to specific parts thereof.

While this machine is for performing our process may also be performed by other suitable machines, and is-capable of being. car ried out manually, and. it does not depend for its utility. upon the use of theparticular machine shown in the drawings.

The drawings forming part of this application illustrate a mach-me by which the process may be carried out, and in these drawings -Fig. 1 is a plan view of the machine;

Fig. 2 is a side elevation thereof;

Fig. 3 is a sectional side elevation of the folding, pressing, and gumming mechanism;

particularly adapted 111g. 4 is a sectional side elevation of the refolding and repressing mechanism;

Fig. 5 is an endview of'a folding trumpet; Fig. 6 is a plan view of an unfolding device;

Fig. 7 is a side elevation thereof, taken along the line 77 in Fig, 6; Fig. 8 is a plan View of-a guidingand scraping device;

Fig. 9 is a. planview of certain ofthe refolding rolls; l

Fig. 10 is a side elevation of a. pair of refolding rolls; and

repressing mechanism G,

improved process, the

Figs. 11 to 16 inclusive illustrate success1ve steps in the carrying out of our improved process.

Referring particularly to Figs. 1 and 2, the machine which we have designed andon which our process may be carried out comprises a supplying mechanism A, a folding mechanism B, a pressing mechanism C, an unfolding mechanism D, a gumming mecha- ,nism. E, a drying portion F, a refolding and a winding mechanism H.

The construction of our improved machine not shown herein, as it does not appear to be necessary for a clear understanding of our improved method, but for a more complete disclosure thereof reference is made to the co-pending application above identified. We will, howe or, briefly describe the general construction and operation of the machine, so that the manner in which the-process is carried out by the use of said machine will be read- 11y understood.

and described. in. full detail The fiber is supplied to the machine in the I form of a strip S from one or morerollsR which are mounted upon supporting bars 41, each of which is detachably mounted on. the frame M of the machine. The construction is such that any particular bar- 4'1 may be removed and replaced as desired,. f0r re-' plenishment of the paper roll mounted thereon. A retarding weight 44 and friction spring 4.9 is provided for each separate roll R.

As the strips 8 leave the roll B, they are drawn through trumpets 55, each having; an opening 66 (Fig. 5) of such peculiar cross section that the flat strip 7 will leave the trumpet the shape shown in Fig. 12.

A: guiding member or anvil 58 projects into the open rear end of each trumpet and a guide plate 62 is pivoted at64 so that it may be adjusted laterally. The guide plate 62 determines the exact transverse position of the folding lines in the finished reed, and by adjusting the guide plate slightlyabout its pivot 64' the edge of the outer'fold may be caused to coincide exactly with the edge of the finished reed, as indicated in F ig- 13, a most desirable result.

As the partially folded strips S leave the trumpets 55, they are drawn between presser rolls and 71. The lower presser roll 70 is provided with grooves 72 which are of the exact desired width of the finished reed, and the upper roll 71 is provided with ribs 73 fitting within the groove 72. The presser rolls 70 and 71 act as feed rolls to draw the reed through the trumpets 55, and also act as sizing devices, as the width of the grooves 72 determines the width of the folded reed. Suitable guide plates 71 assist in conducting the reed from the trumpets to the presser rolls, which firmly compress the folded reed and break down the fiber at the fold line As each strip S leaves the presser rolls, it is freed from its groove 72 by a stripper bar having guide fingers S7 projecting into the grooves 7 The strips S then pass through unfolding devices (Figs. 6 and 7 each of which has a straight unfolding edge 92 and a notch or recess 93. The folded but ungummed paper is opened out by the unfolding device 90. as indicated in Figs. 6 and 7 leaving the unfolding devices in the flat but longitudinally scored condition llltllCt ted in Fig. 1d.

The unfolded and flattened strip S then passes over a drum 95 (Fig. 3), the lower portion of which dips into a tank 97 containing a suitable gum or glue which is kept hot by the circulation of steam or hot water through a jacket J positioned beneath the tank. As each strip S leaves the drum 95, it passes under a guide rod 101 and over a scraper 102 by which surplus gum is removed from the strip.

A swinging support 105 extends across the face of the drum 95 and normally rests in the inoperative position indicated in Fig. 3. hen the machine is stopped, however, it is desirable to raise the strips S away from the face of the drum to permit removal or replacement thereof, and in this event the bar 105 may be swung upward to the operative position indicated in dotted lines in Fig. 3.

As the gummed strips leave the gumming mechanism E, they are next delivered to th refolding and repressing mechanism G. The mechanisms E and G, however, are somewhat widely separated so as to provide a drying portion F for the freshly gummed strips. The free stretch of the fiber in the drying portion F is commonly from 8 to 10 feet and during the passage of the fiber through this portion F of the machine the gum has a chance to dry partially and to become verysticky or tacky.

The strips S are then drawn between pair of refolding rolls 111 and 112 (Figs. 9 and 10). These rolls are preferably formed of brass or some other non-corrosive metal and the roll 111 is provided with a substantially semi-circular groove 115 while the roll 112 is provided with a thin flange or rib 116 projecting into the groove 115 at its lower portion.

As the gummed and sticky paper is drawn between these freely rotatable rolls, it is again folded along the previous lines to the section indicated in Fig. 15. The refolded strip S then passes between repressing rolls 121 and 122 (Fig. 1). The roll 121 has series of grooves formed therein similar to the grooves in the presser roll 70 previously described. The rolls 122 are each of a width substantially equal to that of one of the grooves 120 and each roll 122 is mounted upon a vertically slidable support 12st and is pressed yieldingly downward by a spring 127. Handles are provided for separately raising the upper rolls 122 and holding them in inoperative position when it is desired to thread up the machine.

The refolded and repressed strip of reed S is removed from the grooves 120 of the r0ll'121 by a second series of presser fingers 133 (Fig. at), and is drawn past guides 156 and swinging guide arms 157 by winding reels 152. The guides 156 and guide arms 157 are mounted upon a transverse bar and suitable IDBCllttlliSlll is provided for reciprocating the transverse bar 155 vertically and for continuously rotating the winding spindles 1 12 upon which the spools or reels 152 are frictionally mounted.

The speed of the spindles 1&2 is somewhat in excess of the speed required to wind up the reed on the smallest diameter of the spools 152. The spools accordingly rotate as ragidly as is necessary to take up the reed and the surplus speed of the winding'spindles 1 12 is taken care of by the slip between the spindles and the spools.

Suitable driving connections are provided by which all of the various parts of the machine operate in correct timed relation and the operator may start and stop the machine at will by the use of one of the shipper handles conveniently located at both ends of the machine.

Having described generally the construction of a machine by the use of which our improved method maybe carried out, we will now indicate specifically the successive steps of the method and the advantages thereof.

The ungummed strip S is first folded longitudinally, preferably to produce the threeply structure indicated in Figs. 12 and 13. Great care is taken that-the longitudinal fold lines will be so positioned laterally that the outer fold of the fiber will exactly coincide with the edge of the finished reed. The reed is then subjected to a combined press ing and sizing operation by which it is fiattened and pressed upon itself as indicated in Fig. 13, and the reed is also brought to an exact width which may be conveniently de- I termined by the width of the groove or other fiber, folding opening in which it is com ressed. This operation also breaks down the fiber at the fold lines, which is essential to the successful folding of this strong, heavy material.

All of the operations thus far described are performed before any gum is applied to the fiber.

The folded strip is then unfolded and flattened, and after being unfolded it is gummed on one face, the surplus gum is scraped therefrom, and the remaining gum is then allowed to partially dry and to become very sticky.

The partially dried and very sticky fiber is then refolded to the condition indicated in Fig. 15 and is repressed and again brought to exact size and uniform width in any convenient manner, as by being compressed within the grooves 120 of the repressing roll121. The finished reed is then disposed of as may be desired, preferably by winding the reed upon spools as indicated in Figs. 1 and 2.

The above-described succession of operations, by which the heavy tough fiber is first folded and compressed to exact uniform width while free from gum and is thereafter gummed and refolded along the lines on which the fiber has been previously broken down, enable us to produce a very firm uniform product and one which has no tendency to thereafter separate into its constituent layers. Furthermore, the provision of a definite and sufficient period for permitting the gun to partially dry and be come sticky contributes very largely to the success of our improved method.

Having thus described our improved method and the advantages thereof, we do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what we claim is 1. The method of making fiber reed which consists in taking a strip of ungummed flat it longitudinally, breaking down and pressing the folded fiber, unfolding the fiber, and thereafter gumming, refolding and repressing the fiber to form a finished fiber reed.

2. The method of making fiber reed which consists in taking a strip of ungummed flat fiber, folding it longitudinallyto a three ply" thickness, breaking down and pressing thefiber, folding it longitudinally to a three ply thickness, breaking down and pressing the folded fiber, unfolding the fiber, and thereafter gumming and partially drying the unfolded fiber, and then refolding and repressing the fiber to form a finished reed.

5 Themethod of making fiber reed WlllCh consists in longitudinally folding and pressing the ungummed fiber, unfolding and gumming the fiber, and thereafter refolding and repressing the fiber ished fiber reed.

6. The method of making fiber reed which consists in longitudinally folding and pressing the ungummed fiber, unfolding and gumming the fiber, allowing the gum to set long enough to become sticky, and thereafter refolding and repressing the fiber to form a finished fiber reed.

7. The method of making a fiber reed which consists in folding, pressing and sizing the ungummed fiber to uniform width, unfolding and gumming the fiber, and thereafter refolding and repressing the fiber to form a finished fiber reed.

8. The method of making fiber reed which consists in folding a strip of ungummed flat fiber to a three-ply thickness, pressing the folded fiber to a firmly compressed structure having the free edge of the outer ply of fiber coinciding with the edge of the folded reed, and thereafter unfolding, gumming, refolding and repressing the fiber to form a finished reed. In testimony whereof We have hereunto affixed our signatures.

EARL F. BALDWIN. FRANK E. woons.

to form a fin-

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