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Publication numberUS257761 A
Publication typeGrant
Publication dateMay 9, 1882
Filing dateFeb 13, 1882
Publication numberUS 257761 A, US 257761A, US-A-257761, US257761 A, US257761A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Waterproofing paper
US 257761 A
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Description  (OCR text may contain errors)

Patented May. 9,- 1882.

(No Model.)


N. Prrnn's. Hmm-ummm". wnhingwn, n. a




SPECIFICATION forming part of Letters Patent No. 257,761, dated May 9, 1882.

I Application filed February 13, 1882. (No model.)

To all whom it 'may concern:

Be it known that I, JOB H. RIDGWAY, a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented an Imprqvementin Waterproofing Paper, of which the following is a specification.

The object of'myinvention is to cheaply water-proof paper or pasteboard by applying parattine to it in the manner described hereinafter.

Heretofore paper has been rendered waterproof by saturating it with melted paratine; but Lhave found that paper can have a thin film of para'ine imparted to it by simply rubbing blocks, lumps, or granulated masses of that material on the surface of the paper.

Different appliances may be used in carrying' out the process. `ln the diagram shown in Figure 1 of the accompanying drawings, for instance, a continuous sheet, A, ot' paper is drawn from a roll in the direction of the arrow over and in contact with a table or support, B,

\ having a smooth face; or, in place of this support, a roller having journals adapted to fixed bearings may be used, as shown in Fig. 2.

A block, D, of 'solid paraffine is contained within a suitable receptacle, E; or there may be a number of slabs or a powdered or granulated inass of parafine in the said receptacle, in which aA Weight or number of weights fit freely, so as to force the parattine down onto the paper with a constant pressure. The paraftine has such an affinity for the paper that the surface of the latter will be coated with a `thin adhesive film of that material.

The coated paper may, it' desired, be passed between pressure-rollers.

When paper in sheets has to be coated appliances for passing the paraftine under pressure over the surface of the stationary sheets may be used. lt should be here understood,

however, that I neither claim nor rtrict myself to any specific mechanism or apparatus Wherewith to facilitate the coating of the paper.

While the paper thus prepared may not be so perm anentl y water-proof as paper saturated Both sides ot' paper may be treated in. the manner described.

I am aware that paraftine has been applied to fabrics for rendering the same water-proof, but always under the influence of such heat as to impregnate the fabric with that substance; but in my invention no heat is used, the solid parafline being applied to the paper while both are cold, and the paper having a thin film of paraiue imparted to the surface only.

I claim as myinvention 1. The mode herein described of imparting a coating of paraftine to the surface ot' paper or pasteboard, the said mode consisting in applying a block or blocks or granulated or powdered masses of paratline to the surface ofthe paper under pressure while the paper or the parafne is in motion, substantially as de

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3103459 *Dec 16, 1959Sep 10, 1963 Paperboard corrugating medium treatment
US3199490 *Dec 13, 1961Aug 10, 1965Laddie KarlikDevice for dispensing, coating and cutting paper webs
US3305392 *May 27, 1965Feb 21, 1967Scott Paper CoModified fibrous web and process of manufacture
US3630802 *Jul 13, 1970Dec 28, 1971Dettling Theodore JMethod and apparatus for producing a coated substrate and a laminated product
US3661626 *May 8, 1970May 9, 1972Procter & GambleMethod of coating a flexible web
US4541273 *Nov 2, 1983Sep 17, 1985Weyerhaeuser CompanyStructural and surface properties tester for paper
US5407697 *Jul 7, 1993Apr 18, 1995John Lysaght LimitedContinuous melt coating method and apparatus
US6649262Jul 6, 2001Nov 18, 2003Kimberly-Clark Worldwide, Inc.Wet roll having uniform composition distribution
US6651924Nov 19, 2001Nov 25, 2003Kimberly-Clark Worldwide, Inc.Method and apparatus for making a rolled wet product
US6866220Dec 21, 2001Mar 15, 2005Kimberly-Clark Worldwide, Inc.Continuous motion coreless roll winder
US7101587Jul 6, 2001Sep 5, 2006Kimberly-Clark Worldwide, Inc.Method for wetting and winding a substrate
US7179502Sep 17, 2003Feb 20, 2007Kimberly-Clark Worldwide, Inc.Wet roll having uniform composition distribution
WO1987001440A1 *Aug 30, 1985Mar 12, 1987Weyerhaeuser CoStructural and surface properties tester for paper
Cooperative ClassificationD21H19/18