US1928616A - Table pad - Google Patents

Description

Uct. 3, 1933. N. c. BREWER 1,928,616

TABLE PAD Filed Feb.. 1o, 19:55

Tg. l.

B7 2796, Jam-#23M 5.

@d lalfS 'v AF hihihi? A'piggy y f y 1,928,616 i n y. {TABLEPAD Y i Nelson C..Brwer, Lhicago, llll., assigner to Chas. A. Brewerdt' Sons, Chicago, Ill., a partnersliipv consisting cf Nelson C.' Brewer, Kenneth E.

Brewer, and Everett llt. Brewer H i sppl'ieanonrcbmary10,1933. sexismo. 656,063

' [afs claims( (o1. 454.63.45 i

This invention relates to pads ofthetype corn-` monly usedon tables tofprovide suitablev heat insulation againstmarring the top of the table byv heatvfrom a het receptacle placed: on the table.Y Padsof this type arecommonly'made `in foldable sections so` as to occupy'but ylittle yspace whenfnot .in use, and they usually ycomprisea cloth casing and a 'comparativelythick ller of,A

felt or other brous material to provide the heat l@ insulation.v `In some cases the ller` has inf cluded one or more sheets of corrugated or indented felted paper designed to produce dead air spaces within the pad, but in such' construction continued use of the pad in time flattens thev corrugated sheet to suchan extent that ythe spaces which normally forni thedead air cell/sA are virtually closed. In other cases it'has been i proposed to employ a plurality of relatively thick flat sheets each provided with holes, with the iltWo apertured sheets overlappingin such a way that the cells thereof communicate with each other and with holes in the margin of ther padto i provide free circulation of air through the pad. This construction, of course, largely defeatsthe insulating eifect of dead air cells.

The chief object of my present invention isf to provide an improved table pad of the character described which shall be of simple and inexpen-` sive structure and possess high heat insulating properties which will not diminish With continued use of the pad. Withthis object in view, the pad of myv present invention isk characterized by the provision of one or more flat filler sheets each formed with a multiplicity of holes therein that are sealed by flat imperforatesheets on both sides thereof so as to form dead air cells dis--y tributed throughout` the entire area of the pad. In structural detail, the invention isncapable of considerable modification `within its broad have illustrated one `simple and practical embodiment of the invention which in practice has been found to satisfactorily effectuate the stated purposes and objects thereof, and referring thereto: l i

Fig. 1 is a top plan view of thefpad unfolded .for use, and broken out to show the iiller struc ture.

Fig. 2 is an' edge view thereof looking from the bottom of Fig. 1.

Fig. `3 is an enlarged vertical longitudinal secn tion, broken out, on the line 3-3 of Fig. 1.

Fig. 4 is a similar section through one edge of the pad taken on the line 41-4 of Fig. l.

Fig. 5 is a fragmentary vertical section through principle, but inthe accompanying drawing I,

yturned inwardly to some extent to form a broad be varied asdesired. l*

The pad covering preferably comprises, for thev top member, a continuous sheet of oilgclothfor` other water-proof material designated by 10, andv .for the bottom member a continuous sheet 11 of cloth felt. By reference to Figs. 2 and 3 it will be observed that the four sections are hinged to each other by the simple expedient of providing a pair of depending loops 12 in the top covering 'm member 10, the sides of one loop 12 being cemented to the adjacent edges of the llers of the sections A and B, and the sides of the other loop '12*` being similarly cemented to the adjacent edges of the llers of the sections C and D. The bottom` covering 1l is similarly formed with a central 4upstanding loop 13, the sides of which are' similarly cemented to the` adjacent edges of the two intermediate sections B and C. In this way both of the covering members 10 and l1 being 80 flexible, the section A can be folded beneath the section B ona hinge indicated at :c in Fig. 3, the sectionC can then be folded on top of thefsection B on the hinge indicatedat y, and the section D can then be folded ontop of the section Con the hinge indicated at z.' This construction does not require any stitching'y at the hinges, although such stitching may be used ifdesired.

y Describing now the preferred filling, which is identical in all of the four sections, 14 designates 90' a comparatively thicksheet of imperforate paper felt which directlyv underliesr the top covering 10', and 15 designates a similar sheet'which directly overliesp the bottom covering section 11. Between the filler sheets 14 and 15 are interposed `a pair of smooth surfaced flat felt sheets 16 and 17, each of which,v as best shown in Fig. 1, is formed with a multitude of longitudinal and transversel rows of holes 18 and 19 respectively. Between thefperforate sheets 16 and 17 is inserted a com- 100 paratively thin imperforate sheet 2i), preferably of noncombustible material, such as` asbestos, al* though a sheet of paper, cardboard or other ma terial may be used. V i V In the formation of the outeredge portions of the pad sections, the top covering 10 is prefer* ably carried down across the edges of the sheets 14 and 16, as shown at 21 in Fig. 4and then overlap 22 on the edge portion of the central sheet 20, being cemented to the latter; and the bottom covering 11 is similarly extended up over the edges of the sheets 15 and 17 as shown at 23, and then carried inwardly and cemented to the upper side of the sheet 17 as shown at 24. This forms two composite sections, the upper comprising the parts 10, 14, 16 and 20, and the lower comprising the parts 11, 15 and 17; and these two sections are united around the edgesv of the pad by inter-locking stitching 25 which, of course, is intermitted on the upper side in the planes of the hinges :c and z and on the lower side in the plane of the hinge y.

In the described construction the holes 18 of the at perforated sheet 16 are sealed at their upper ends by the sheet 14 and at their lower ends by the sheet 20; and similarly the holes 19 of the sheet 17 are sealed at their upper ends by the sheet 20 and at their lower ends by the sheet 15. This construction provides throughout the entire intermediate portion of the pad a multitude of dead air cells, which provide a very effective insulation against the transmission of heat from a hot vessel on the pad through the latter to the surface of the table, and thereby safeguards the latter against disgurement.

I have herein shown and described, for purposes of illustration, one practical and eicient embodiment of the invention, but it is to be understood that the structural details may be varied so long as the principle of sealed dead air cells is preserved, and hence I do not limit the invention to the exact structure shown, but reserve all such variations, modifications and mechanical equivalents as fall within the spirit and purview of the claims.

I claim:

1. A heat insulating table pad, comprising an outer covering, and a filler consisting of a pair of ilat imperforate sheets next to said covering, a pair of fiat perforated sheets between said imperforate sheets, and a flat imperforate sheet between said perforated sheets.

2. A heat insulating table pad, comprising an outer covering, and a ller therefor consisting of a pair of imperforate felt sheets next to said covering, a pair of flat, smooth surfaced perforated felt sheetsbetween said imperforate sheets, and an imperforate asbestos sheet between said perforated sheets.

3. A heat insulating table pad, comprising an outer covering, and a filler consisting of a pair of flat imperforate felt sheets next to said covering, a pair of fiat perforated felt sheets between said imperiorate sheets disposed with the perforations of one sheet substantially in register with the perforations of the other, and a flat imperfo rate asbestos sheet between said perforate sheets.

NELSON C. BREWER.

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