US2289653A

US2289653A - Ventilating metal ironing table top

Info

Publication number: US2289653A
Application number: US415727A
Authority: US
Inventors: Edward T John
Original assignee: J R Clark Co
Current assignee: J R Clark Co
Priority date: 1941-03-08
Filing date: 1941-10-20
Publication date: 1942-07-14
Anticipated expiration: 1959-07-14

Description

July 14, 1942. JQHN .VENTILATING METAL IRONING TABLE TOP Original Filed March 8, 1941 2 Sheets-Sheet l Inv ntor': Edward. T John.

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Patented July 14, 1942 UNITED, STATES v 2,289,653 vsnrmrmo new. moms. new ror Edward T. John, Minneapolis, Minn., assignor to The J. R. Clark Company, Minneapolis, Minn,

a corporation Original application March 8,1941, Serial No. 382,359. Divided and this application October 20, 1941, Serial No. 415,727

4 Claims.

My invention relates to ventilating metal ironing table tops and has -for its object to provide an ironing table top having its upper surface and a series of supporting members comprised in a single sheet of expanded metal so formed that parts of said sheet will be imperforate and can be folded to form longitudinal ribs. This application is a division of my application Ser. No. 382,359, filed March 8, 1941, and now issued as Patent No. 2,276,981.

Efforts to obtain a metal ironing table top have not been successful because when a sheet of metal is subjected to the heat of a flatiro'n those heated parts of the area, within unheated parts of the sheet, at the heated place will expand rapidly and produce serious buckling which ultlmately becomes permanent and results in a deformed and uneven 'top. Further eil'orts heretofore have failed because sheet metal does not permit passage of steam or moisture therethrough. It loses heat rapidly from the underside and thus results in condensation of steam upon the sheet metal. Accumulations of moisture follow which interfere with the ironing operation and increase the direct outflow of steam 25 about the wrist and arm of the ironer.

As noted in the above identified application I have discovered that a top sheet of expanded metal applied to a, supporting framework, preferably also of metal, so that the expanded metal 80 becomes the ironing surface, solves the problems of a metal ironing table top and overcomesthe difficulties which have made the use of metal ironing table tops ineffective and unsuccessful. I have further discovered that expanded metal may be made in sheets wherein alternate portions are formed of expanded metal with intervening strips of imperforate sheet metal and that said strips can be bent upon themselves to form longitudinal supporting members with very great advantage in the positioning and means of support of the expanded metal surface.

It is a principal object of my invention therefore to form the expanded metal ironing table top of alternate portions of expanded metal and unperforated metal with the unperforated metal folded-to bring the edges of expanded metal strip together and provide longitudinal supporting ribs for the entire table top.

It is a further object of my invention to provide a framework including said longitudinal strips so formed, wherein transverse strips and a peripheral member with inwardly turned top flange, which member may be U-shaped in' cross section, all are integrally united together.

f noted will be particularly pointed out in the claims. t

In the drawings illustrating an application of my invention in one form:

Fig. 1 is a plan view of my ironing table top viewed from-the underside.

Fig. v2 is an enlarged plan view of the large end of the ironing table top embodying the features of my invention.

Fig. 3 is a plan view of a metal sheet formed ,with alternating strips of expanded metal and unperforated sheet metal.

Fig. 4 is an enlarged fragmentary plan view of a part of what is shown in Fig. 3.

Fig. 5 is a transverse sectional view showing the manner of forming the supporting ribs in conjunction with the strips of expanded metal.

Fig. 6 is a transverse sectional view across the ironing table top showing the relation of the ribs of Fig. 5 to the transverse supporting mem-- bers. o

Fig. 7 is an enlarged plan view ofa small portion of a sheet formed of alternate strips of expanded metal mesh and unperforated sheet metal with the expanded metal diamonds positioned transversely to the position of those diamonds in Figs.-10 and 11.

AsshowninFigs. 3, 4 and? itisknown and '.practical to make expanded metal wherein successive strips 10- of expanded metal are formed in esral with intervening strips II of sheet metal whichis unperiorated, the strands of the expanded metal being integrally continuous at their points of union with the uniform plane unperforated sheet metal strips Ii, as clearly shown in 4 Figs. 3, 4 and 7. The expanded metal strips ll of Figs. 3 and 4 have the diamonds forming the body of expanded metal with their longer dimensions at right angles .to the strips ll of unperforated metal. In Fig. 7 strips I! of expanded metal have their longer dimensions of the diamonds forming the mesh of expanded metal running parallel to the edges of the unperforated metal strips ll. v

In forming the expanded metal top the imperfol-ate strips II of sheet metal will be scored as indicated at II, II and It in Figs. 3 and 4, and, in a suitable former, will be doubled back upon themselves so that the scorings l5 become the ends and the scorings I4 and It become the top bases of longitudinalrib members l1, l8 and II,

the parts of which are brought together as indicated at 20 in Fig. 5 to form longitudinal supforated portions extending along its longer dimension, the unperforated portions being folded down from the top face of the ironing table and brought together to form longitudinal supporting ribs, the perforated portions being positioned and held in a common plane over and integral with said ribs to form the ironing surface, and spaced members secured to the ribs and to the edges of the sheet along its sides for restraining the top from transverse bending movements.

2. An ironing table top comprising a single sheet of metal having expanded metal perforated their ends rest upon the bottom flange 21 of the peripheral member 25, as shown in Fig. 6. The integral rib members i1, i8 and I! enter slots in the flange members 26, as indicated at 21 in Fig. 6, being held so as to raise the expanded metal strip portions ill .to give a crown effect, as clearly shown in Fig. 6. Also as shown in .Figs. 1 and 6 the lateral margins of expanded metal strips of the outer expanded metal strips i0 underlie the top peripheral flange". The forward-transverse member 22 is preferably bifurcated as indicated at 29, and'ears 30, II and 32 form means of attaching the ironing table top to suitable leg structure for supporting the same.

The advantages of my invention will sufflciently appear from the foregoing description. Not only is there a frame supported metal ironing table top which is light and strong for its weight and which has a large percentage of its upper surface open so that the act of ironing and resulting generation of steam beneath the hot iron will have the, effect of inducing steam through the pad over the metal top and through the openings in said expended metal top away from the hand of the operator, but further that the expanded metal top is itself made integral with the longitudinal supporting ribs. and their flanges into which the longitudinal ribs are countersunk, makes an exceptionally strong construction and one in which the ironing surface is smooth and supported in the most effective manner possible.

I claim:

1. An ironing table top comprising a single sheet of metal having perforated and unperportions and intervening unperforated portions extending along the longer dimension of the sheet, the unperforated portions being folded down from the top face of the ironing table and brought together to form longitudinal supporting ribs, the expanded metal perforated portions being positioned and held in a common planeover and integral with said ribs to form the ironing surface, and spaced members secured to the ribs and to the edges at the sides of the sheet for restraining the top from transverse bending movements.

3. An ironing table top comprising a single sheet of metal having perforated and unperforated portions extending along its longer dimension, the unperforated portions being folded down from the top face of the ironing table and brought together to form longitudinal supporting ribs, the perforated portions being positioned and held in a common plane over and integral with said ribs to form the ironing surface, and a peripheral member secured to the ends of said ribs and to the edges of the sheet.

4. An ironing table top, comprising a surface member formed of a continuous sheet of metal having alternate strips of expanded metal and unperforated metal, said strips of unperforated metal being folded together to form longitudinal supporting ribs integral with the expanded metal surface part of the top, and a series of transverse supporting members having upstanding flanges, said integral ribs and upstanding flanges being countersunk relatively to form a unitary supporting frame.

EDWARD T. JOHN.