US2206836A - Pressing pad - Google Patents

Description

July 2. 1940- c. J. CRARY 2,206,836

PRESSING PAD Filed nay 24, 1958 C. JOHN CQHEY.

/ ATTORNEY.

Patented July Z, 1940 @PATENT NOFFICE PRESSING PAD i `Clarence John` Crary, Chicago, Ill., assignor to George Beary, Chicago, Ill.

Application May 24, 1938, Serial No. 209,669

4 Claims.

n dustries.

A particular object of the invention is to pro` Vide a pressing pad so constructed that it will n stand up for a long period under constant main present day use. `The machines are equipped with pressure rendering means that exceed the chine pressures as employed in pressing machines pressure possible to beexerted by the human operator of a pressing machine and the `result of these high pressures applied continuously will V soon break down a pad that is not" constructed especially to withstandthem.

` It is an important object of the invention therefore, to so construct the pad that it will stand up under pressure for a reasonable length of time, will be subjected to high pressure during manufacture so that the `strands of the material employed in makingthe pad will not be further compressed by the pressing machine, and the pad so constructed that it is heavier along its longitudinal center and stronger through `its mid-portion than pads in` present day use.`

A further object of the invention is to construct the entire pad out of three padsthat are made up individually and each subjected to pressure and thereafter combined with each other under pressure and wrapping to resist thepressure encountered in the pressing machines. I have found that by employing steel wool in ribbon form,` and winding the same laterally to form the central or inner pad, that better results are obtained due to the fact that the ribbons are on edge and wound closely to give a solid, yet yieldmade, which are called outer or crown pads. The` crown pads have disposed between them a pad made by laying the ribbon strand of steel laterally on edge and back and forth to ll the die, and then piling or wrapping the strand lengthwise therearound to bring the center of the pad higher,

the combination of three pads being then united under pressure to complete the pad construction which may be placed in a fabric covering.

With these and other objects in'view, my invention comprises the method of construction and articleof manufacture as hereinafter described and particularly illustrated in the accompanying drawing, in which:

Figure 1` is a plan View illustrating the first step of" the invention and formation of one of the crown or outer pads, v

Figure 2 isla View similar to Figure l and shows the method of constructing the other crown pad which is the same as illustrated in Figure 1,

Figure 3 isa view showing the two steps of construction employed in making the center pad.

Figure 4 is a view showing the finished pad and part of the fabric cover used therewith,

Figure 5 is a view in side elevation showing the three pads in the Vfinal formation ready to `be used in the pressing machine,

Figure 6 isa view in perspective of a `ribbon.

strand of steelwool showing how it appears commercially and as used in the construction of the center pad, i i Figure 7 is a transverse section of either of the pads illustrated in Figures 1 and 2 and showing in diagram the appearance of the pad before being subjected to pressure,

Figure 8 is a view similar to Figure 7 showing the" appearance` of the central or intermediate pad as illustrated in Figure 3, and

Figure 9 `is a View in cross section through the n finished pad showingthe three layers or individual pads united in one. i

Referring to the drawing in detail, I0 indicates a ribbon of steel wool as manufactured and consisting of many strands of the Wool, the rib- -bon coming in various lengths and in itself not material to the invention except as employed in my novel process wherein it is laid longitudinally and on edge back and. forth as illustrated in Figures 1 and 2 in a suitable die to form a pile, the steel wool being in the form of the ribbon or strand shown in Figure 6 and laid on edge and passed back and forth lengthwise to form the pad mass as at Il. The mass is then compressed under approximately 100 pounds pressure to the square inch to shape it into padform, the separate padsv as shown in Figures 1 and 2 and indicated as outer pads I2 and I3 being similarly formed and referred to as crown or outer pads. In Figure '7, the outline position indicates the thickness of the mass Il before compressionto form the crown pad.`

In Figure 3, the center pad I1 of a finished pad structure is formed by first laying the ribbon I0 back and forth on edge crosswise of the die `form to provide a mass of the steel wool, the strands of which are on edge as at IB to give a substantial body to the pad. After the pad form fr i is so constructed, the steel wool in ribbon form I0 is wound lengthwise about the mass in flat position, that is the strand of ribbon wool is flat wound about the mass to form. the body of the center pad il'. The strands are so laid that the longitudinal vcenter of the pad is covered with more of the wool than the outer edges thereof and the pad is consequently thicker through its middle than along its outer edges. ,This laying ofthe wool to form the thickened center is indicated as at I8 in Figures 3 and 8. In this way more pad body is provided where the greatest wear occurs and the piling of the steel wool along i the center to form a thickened portion in the pad lengthwise thereof prevents high and low spots and maintains the pad at equal thickness, and permits the alternate use of opposite sides of the pad for even wear. After the wrapping as at I8,

the mass is compressed from the outline position in Figure 8 to the full line indication.

Thus is provided three pads, a center pad I1 (Figures 3 and 8) and two outer pads I2 and I3 (Figuresl, 2 and 9). The center. pad is then placed between the outer pads I2 and I3 and the Whole assembly placed under a pressure suicient to unite the three pads in unitary construction. The pressureemployed in compressing thek center pad il alone may be 200 pounds per square inch and the pressure used in compressing all three pads l2, I3 and Il to complete the operation may be 150 pounds .per square inch. These working pressures are indicative of what can be used to make the pad properly, but they can andare Varied for pad constructions for use in different industries and can accordingly be varied as desired.

After the pad is completed, it may be placed inra fabric covering. When the three pads are combined and before pressure may be again appliedthereto, the unit is wrapped about with strands ISA of the steel wool as illustrated in Figure fl. The die that is employed in the compression pinches the edges of the pads and provides smooth. edges and smooth surfaces to the pad which is usually enclosed as noted in any What I claim is:

1. The method of making a pressing pad consisting in laying separate masses of steel wool in pad shape, with the strands of the steel wool extending-longitudinally of the pad, compressing the masses to form individual crown pads, laying another mass of steel woolin pad shape with the strands of the steel wool extending widthwise and compressing thesame to form a center pad, interposing the center pad between the crown pads and then subjecting the three pads to pressure to form a unitary structure.

2. The method of making a pressing pad consisting in laying separate masses of steel wool in pad shape with the strands of the wool extending lengthwise of the pad and compressing the masses to form two separate identical outer pads, laying anothermass of steel wool with the strands of the wool extending longitudinally and laterally of the mass the longitudinal strands being greater in number about thecentral portion of the pad to provide a median section of increased thickness and compressing the mass to form` a center pad, then interposing the said center pad between the outer pads and subjecting all of them to pressure to form a unitary structure and then enclosing the pad in a fabric covering.

3. The method of making a pressing pad consisting in laying separate masses of steel wool in pad shape with the strands of steel wool extending widthwise, compressing the masses to form separate pads, laying another mass of steel wool to form a central pad with strands thereof extending longitudinally and laterally and compressing said latter mass to form a pad and then combining all the pads and subjecting them to pressure. y

Ll. The method of making. a pressing pad consisting in laying separate masses of steel wool in pad form with the strands of wood extending widthwise, compressing the masses to form separate pads, laying another mass of steel wool to form a central pad. with strands extending widthwise and longitudinally of the pad with the, longitudinal strandsy arrangedto increase the thickness of the pad `along the center thereof and compressing said latter mass and then combining all the pads and subjecting them to pressure to unite them in a single multi-layer pad.

' C. JOHN CRARY.

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