US1707663A - Resilient padding - Google Patents

Description

April 2, 1929. J. J. HOERGER RESILIENT PADDING Filed March 5, 1928 v 2 Sheets-Sheet l ATTORNEYS April 2, 1929. J. J. HOERGER RESILIENT PADDING Filed lia-.rch 5, 1928 2 Sheets-Sheet Patented Api. 2, A1929.

y 1,701,663 PATENT oFFicE.

JOHN J'. HOERGER, 0F HILLSIDE, NEW JERSEY.

RESILIENT PADDING.

Application led March 5, 1928. Serial No. 259,072.

rlhis invention relates to padding for use in ironing or pressing machines and which includes al plurality of resilient coils or springsattached at one end to a supporting plate and supporting upon their other ends a -work engaging fabric pad.

' One object of the invention is to provide a novel and improved combination and con nection of the springs and the supporting plate whereby the springs are directly attached to and frictionally held upon the supd porting plate so as to be easily and quickly springs are frictionally held in sockets the attachable but at the same time sufiiciently securely held against accidental displacement upon or disconnection from the plate.

Another object is to provide resilient padding of this character wherein the supporting plate contacts with the surface of the ironing roll or table only at spaced/points and is perforated to provide space for circulation of air between the plate and said roll or table.

Further objects are to prov-ide a resilient padding for ironing machines wherein the mouths of which are less in diameter than Isaid springs-and their walls undercut, and to provide such padding wherein said springs arel frictionally and resiliently -secured in sockets having expanding or yielding walls inwardly 'of the mouths lof the sockets which are of less diameter than said springs so that said' walls are expanded by the radial resiliency of said springs.

Other objects are to provide such padding wherein the supportin plate is metal and has stamped therefrom soc ets to frictionally and resilier'itly hold the springs therein; to provide a padding of this character wherein the spring holdin sockets are formed of a plurality of resilient tongues stamped from the supporting plate and projecting from one side. thereof .to rovide in such padding helically coiled springs each having its free end in the form of a spiral coil to provide ample support for the fabric pad; to provide in such padding double conical sprin to obtain great resiliency and permit yie ding of they work engagin surface the maximum distance, and to o tain other results and advan-,h tages as will be brought out by the following description.

designated throughout the ,several viewsY by the same reference character, i Figure 1 is a `transverse sectional view through an ironing machine roll with pad- Lling embodying the invention applied there- Figures 2 and 3 are transverse vertical sectional views through two different types of ironing machine beds showing the invention applied thereto.

Figure is an enlarged fragmentary transverse vertical sectional View throu h the padding embodying the invention an a portion of an ironing machine bed.

Figure 5 is a transverse -vertical sectional View through a portion of the padding showing a modified form of spring.

Figure 6 is a top plan view of the upper end of the spring shown in Fi ure 5.

ing another type of spring.

Figure 8 is a fra entary plan View of the supporting plate, s owing the first operation in the formation of the spring holding sockets,

Figure 9 is a fragmentary plan view of the supporting plate showing one of the sockets completed.

Figure 10 is a fragmentary sectional view, partially iii elevation, showing another form ofspring, and

Figure/1l is a top plan view of the sprin shown in Figure 10 illustrating in dot and dash lines the arrangement of a plurality of such springs oii the supporting plate.

I The padding embodying my invention consists in general of a sheet metal su porting plate 1 over which are distribute which are secured at one end a plurality of lielically coiledl springs 2. Over the other or free ends of the springs 2 is arranged a fabric work-engaging pad 3. The pad may be applied lto theironing machine roll A as shown in Figure 1, or to a fiat ironing maand tochine bed B as shown in Figure 2, or a curved f A, plate'and are foi-med of aplurality of tongues Referring to the accompanying drawings in which corresponding and like parts are- 5 which' arel integrally connected to the plate at one end 'adjacent the mouths 6 of the sockets and are spaced at their other ends at the bases of the sockets.` In plan view the sockpreferred way will be iio the present instance circular, and the mouths of the sockets are of a diameter less than the diameter of the corresponding end 7 of the springs, as clearly shown in Figure 4 of the drawing. The tongues 5 which forni the side walls of the socket are outwardly yieldable, and the springs are inserted in the sockets by slightly radially compressing the ends 7 ofv the springs and forcing them into the mouths of the Sockets.

The radial resiliency of the springs then forces the tongues 5 outwardly as shown at 8 in Figure 4 of the drawings,so that the walls of the sockets are undercut, andthe springs are then held upon the plate by the joint actionof the radial resiliency of Athe springs and thel undercut kwalls of the sockets 4. Preferably the metal of which the supporting plate l is formed, is also resilient so that the walls of the sockets formed'by the. tongues 5 areresiliently yieldable. Figure 4 shows at the right hand side, a spring about to be inserted into a socket, while the spring at the middle of thefigure is shown seated inthe socket.

. The plate 1 is shown as secured to the bed,

B of the ironing machine by means of headed screws 9 fitted in a correspondingly threaded opening 10 in the bed, each of said screws passingr through the opening in the bottom of one of the sockets 4' formed by the ends of ythe tongues 5. 'Preferably the screw 9 also serves to secure va special `form of spring within the corresponding socket as indicated at-ll at the left hand side of Figure 4, said spring having its endmost convolution 12 of smaller diameter than the other convolutions so as to be clamped between the head of the screw and the base of the socket 4. Obviously, however, the springs may be omitted from the sockets 4 inwhich the fastening screws 9 are arranged. I y

Any suitable form'of spring may be utilized in -my padding, but preferably double conical springs 13 shown in Figure 4 of the drawings, are used, the convolutions of said springs gradually decreasing in diameter from the ends of the springs inwardly toward the longitudinal center thereof, and the convolutions being arranged so that each thereof may telescope over the smaller when the springs are compressed as by pressure upon lthe work engaging pad 3.

Also, preferably the outer or pad engaging ends of the springs are formed into the spirals 14 as shown in Figures 5 and 6, theplanes 0f which are at substantially right angles to the axes of the springs. This spiral formation provides a supportfor the pad 3 which is sufficiently solid but vat what yielding. Also theinner end of the spiral convolutions may be pointed and upturned as at 15 to penetrate the underside of the pad and hold .the spring against lateral movements relative to the pad. It is desirable resulting from the iexin `2, right incline upwardl at an angle to t e fpla'ne of the plate. When the same time some that the formation of the spiral end 14 of the spring be somewhat concave as shown in Figure 5 of thedrawings. v .A

As shown in Figures 10 and 11 the spiral coil 22 maybe coiled outwardly from the center of the spring 24 as at 23 to a size much greater in diameter than the body vof the spring. lVith such a construction a plurality of the springs can be arranged .on the supporting plate with the spiral coils 22 in almost circumferentially contacting relation,

as shown by dot and dash lines in Figure 11,

so as to.l provide an almost continuous supporting surface for the work engaging pad. 3.

ln many instances an ordinary straight helical coil spring 16,' as shown in Figure 7 may be utilized instead of the double conical springs 13, but the endmost convolution 17I of such a spring should be somewhat greater in diameter than the mouth of the spring receiving .socket 4 of the supporting plate 1, as is the end convolution-"1f of the double conical spring 13 shown in Figure 4.

It will beobserved that the springs of the padding embodying., my invention are fricl9() tionallyand resiliently heldin the sockets 4, it `being possible to forcibly pull the springs from the sockets; but the springs aresufticiently securely held in the sockets as to prevent accidental displacement or discon hane'ed, due tothe distortion of the sockets of the supporting plate. Obviously -w en the plate -is exed the sockets 4 are distorted into a more or less elliptical form which causes a more secure engagement ofthe walls of the Sockets with the end convolutions of the springs.

The sockets 4 may be formed in any suitable manner but preferably a socket is formed by'producing in the supporting plate angularly disposed slits 18 which are of equal length and'intersect and mutually bisect, as lclearlyshown lin Figure 8. The tongues 21thus' formed are pressed toward one side of the platev by suitable dies and bent intermediate their ends as at-19 (Fig-y ure 4) toform the sockets as illustrated at the right hand side of Figure 4.

It will be noted that the free end portions 20 `of the tongues are initially at an angle to the plane of the bedl B and inwardly of the socket the spring is inserted in the socket, the outward expanding of the tongues. under the inliuence of the spring swin these end portions 20 downwardly paralle to the plane of of the machine and the plate and into contact with the surface of the bed B as shown in the middle of Figure 4. This initial formation of the sockets admits of the easier expansion of tongues outwardly under the influence of the spring than would be possible were the end portions 2O initially arranged as shown at the middle ot' Figure 4.

M v construction above described has another advantage in that the plate l contacts with the ironing machine roll or bed only at spaced points, that is, at the bases otl the sockets l, and the sockets with the spaces betweenthe tongues in effect form perforations in-the plate, whereby air may freely circulate in the space between the plate and the ironing machine roll or bed upwardly through the sockets and into the space around the springs between the plate and the work engaging pad 3. i

While l have shown and described several embodiments ot` my invention, it will be understood that this is primarily for the purpose of illustrating the principles thereof and that many modifications and changes may be made in the details of construction by those skilledin the art, Without departing from the spirit or scope of the invention. Having thus described my invention, what I claim is:

` A resilientpad for ironing machines com prising, a plurality of helical springs, and a supporting plate having a pluralityv of sockets thereon with outwardly yieldingly expansible walls and the mouths of which are of less diameter than one end of said springs, said springs each having said end secured in one ot' said sockets by the joint action of radial resiliency ot' said spring and the outwardly yielding Walls of said sockets.

JOHN J. HOERGER.

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