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Publication numberUS692481 A
Publication typeGrant
Publication dateFeb 4, 1902
Filing dateMay 23, 1901
Priority dateMay 23, 1901
Publication numberUS 692481 A, US 692481A, US-A-692481, US692481 A, US692481A
InventorsWillard E Robinson
Original AssigneeWillard E Robinson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Soap cake.
US 692481 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 692,48l. Patnted'Feh. 4, I902. W. E. ROBINSON.


(Application filed May 23, 1901.)

(No Model.)




SPECIFICATION forming part of Letters Patent N 0. 692,481, dated February 4, 1902. Application filed May 23, 1901. Serial No. 61,531. (No specimens.)

To all whom it may concern:

Be it known that I, WILLARD E. ROBINSON, of Malden, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Soap Cakes or Bars, of which the following is a specification.

This invention has for its object to assemlole in a single cake two kinds or qualities of soap having different capabilities and arranged so that both kinds shall be exposed at the exterior of the cake and so that the two kinds may be used simultaneously or either kind alone.

The invention as here shown is embodied in a cake comprising a body portion, two side layers projecting therefrom and separated from each other, the said body portion and side layers being composed of suitable nonabrasive toilet soap and made in a single integral piece, so that the side layers form extensions of the body portion and are securely held thereby, and an intermediate layer of abrasive soap which is somewhat harder and wears away less rapidly than the material of the body portion and side layers, the intermediate layer being composed, for example, of so-called pumice soap and inserted between the side layers, so that the series of layers are held together by the body portion. One edge and the ends of the intermediate layer are exposed between the edges and ends of the side layers, the edges and ends of the series of layers collectively forming a lami-. nated surface on one edge of the cake and laminated surfaces extending partly across the ends of the cake. The relative broadness of the intermediate layer causes it to wear less rapidly than the side layers, so that it is caused by the Wear of thecake to bulge slightly between the side layers, its exposed surfaces being therefore adapted to be conveniently applied to the surface requiring its action. 1

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a perspective view of a cake of soap embodying my invention. Fig. 2 represents a sectional view of the same. Fig. 3 represents a View similar to Fig. 2, showing the effect of wear on the cake.

In the drawings the same reference characters indicate like parts or features wherever they occur.

2 represents the body portion, and 3 3 the side layers, which are integral with the body portion and project therefrom, the side layers being separated from each other.

4 represents the intermediate layer, which fills the space between the side layers.

The cake thus formed has homogeneous faces, a homogeneous edge composed wholly of non-abrasive toilet soap, and laminated faces composed in part of non-abrasive and in part of abrasive soap, the abrasive layer Wearing more slowly than the other layers and being caused by the wear of the cake to bulge, as shown in Fig. 3. By thus locating the two kinds of soap in j nxtaposition they can be used simultaneously with better results in many cases than would be attained by using either kind alone. When no abrasive action is required, only the homogeneousfaces of the cake are to be used.

By extending the layers through the cake from end to end I am enabled to manufacture the soap in bars of indeterminate length and out the same into sections, each constituting a complete cake.

The cake or bar may be produced in any preferred way, as by placing the strip which is to form the layer 4 in a suitable mold and pouring the other soap while in a sulficiently soft condition into the mold, so as to form the body 2 and the layers 3, the strip or layer 4 being of course located close to one side of the mold, or the layer 4, being relatively hard, may be simply pressed into a bar of the other soap, so that the latter will overlie the former, as indicated in the drawings.

I do not limit myself to the form and proportions of the several parts of the cake here shown.

I claim A cake of soap, comprising a body portion, two side layers projecting from one side of the body portion and separated from each other, the body and the side layers being integral with each other and composed of a given kind or quality of soap, and an intermediate layer between said side layers, composed of a harder kind or quality of soap, so

, faces of the cake wear away, the edges of the In testimony whereof I have affixed my sig that the intermediate layer wears more slowly ries of layers being held together by the body and is caused to protrude slightly as the surportion. 10

two sidelayers and of the intermediate layer nature in presence of two witnesses.

forming a laminated surface extending along WILLARD E. ROBINSON. one edge and partly across the two ends of Witnesses: the cake, the other three surfaces of the cake 0. F. BROWN,

presenting only one kind or quality, the se- GEO. PEZZETTI.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4081394 *Sep 17, 1976Mar 28, 1978Bartley Louise MSoft shell, hard core
US4996000 *Feb 3, 1989Feb 26, 1991Redeker Dale RMultilayer cleansing bar
US5536433 *Sep 18, 1992Jul 16, 1996De Gaye; Emmanuel J.Cake of soap
US6211129 *Jun 4, 1993Apr 3, 2001Ecolab Inc.Two part chemical concentrate
US6455484Sep 22, 2000Sep 24, 2002Ecolab Inc.Two part chemical concentrate
US6506369May 16, 2001Jan 14, 2003The Gillette CompanyCosmetic or drug in applicator device that as the surface wears away through use, a visual usage indicator in the container shows that a predetermined portion of the composition has been consumed.
US6723269Feb 15, 2001Apr 20, 2004The Gillette CompanyMethods of manufacturing personal care products
US6752982Sep 9, 2002Jun 22, 2004The Gillette CompanyVolatile silicone, a high melting wax, and antiperspirant salt.
US6776981Jan 29, 2002Aug 17, 2004The Gillette CompanyPersonal care product
US6790817Aug 13, 2002Sep 14, 2004Ecolab Inc.Two part chemical concentrate
US6838032Feb 15, 2001Jan 4, 2005The Gillette CompanyMethods of manufacturing personal care products
US7229611Aug 1, 2003Jun 12, 2007The Gillette CompanyDisclosed are clear antiperspirant or deodorant compositions that include visible capsules.
US7517846Oct 20, 2005Apr 14, 2009Ecolab Inc.Inwardly curved bar having an inner opening with an insert interlocking with the bar by insertion into the opening; each part contains a hardener and a source of alkalinity, a surfactant, an enzyme, or an antimicrobial agent; covered with a water soluble or dispersable polymeric film; cleaning detergents
US8048406Feb 15, 2001Nov 1, 2011The Dial CorporationAntiperspirant
Cooperative ClassificationC11D13/18