US606882A - Process of making waterproof leather - Google Patents
Process of making waterproof leather Download PDFInfo
- Publication number
- US606882A US606882A US606882DA US606882A US 606882 A US606882 A US 606882A US 606882D A US606882D A US 606882DA US 606882 A US606882 A US 606882A
- Authority
- US
- United States
- Prior art keywords
- leather
- waterproof
- waterproof leather
- compound
- making waterproof
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000010985 leather Substances 0.000 title description 48
- 238000000034 method Methods 0.000 title description 20
- 150000001875 compounds Chemical class 0.000 description 14
- 239000011148 porous material Substances 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 206010022114 Injury Diseases 0.000 description 2
- 210000003491 Skin Anatomy 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H5/00—Special paper or cardboard not otherwise provided for
- D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
- D21H5/0007—Pretreatment of paper to which liquids or other fluent materials are to be applied
Definitions
- the object of my invention is to render hides or leathers waterproof, filling up all the pores in the skin, so as to render its waterproof qualities permanent and perfect without any injury to the leather, the latter, in fact, being greatly improved, toughened, and strengthened by the process.
- I first subject the leather, particularly if it is heavy leather, such as sole-leather, to a dampening process'1.'. 6., I dampen orwet the leather with water and allow it to dry, and when it is almost dry the leather is put under pressure and rolled to harden it, and it is then allowed thoroughly to dry. This preliminary step in the process is used with heavy leather in order to toughen it and render it in a condition to be receptive to the compound when heated. The leather is then warmed to about 80 Fahrenheit.
- the leather thus impregnated with the compound is placed in an oven or other covered receptacle and submitted to heat of 80 to 100 Fahrenheit, so that the compound will find its way into every portion of the leather, and thereby prevent any dry spot therein which the rolling and working process may have chanced to miss.
- the compound is worked into the hide from the flesh side by the rolling or rubbing process and is then subjected to heat in a covered receptacle, as above explained.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Description
NHE; STATES A'IEN'I Brion.
PROCESS OF MAKING WATERPROOF LEATHER.
SPECIFICATION forming part of Letters Patent No. 606,882, dated July 5, 1898. Application filed May 6,1897. Serial racemes. (No specimens.)
. Melrose, in the'county of Middlesex and State of Massachusetts, have invented an Improvement in Processes of Making Vt aterproof Leather and Compound Therefor, of which the following description is a specification.
I-Ieretofore the processes of tanning or ourrying leather by bark, grease, or chemical processes have been insufficient to make it waterproof or to permanently close the pores of the hide without doing the latter damage. Consequently the leather when submitted to dampness is penetrated by the water, becoming soft and non-waterproof.
The object of my invention is to render hides or leathers waterproof, filling up all the pores in the skin, so as to render its waterproof qualities permanent and perfect without any injury to the leather, the latter, in fact, being greatly improved, toughened, and strengthened by the process.
I first subject the leather, particularly if it is heavy leather, such as sole-leather, to a dampening process'1.'. 6., I dampen orwet the leather with water and allow it to dry, and when it is almost dry the leather is put under pressure and rolled to harden it, and it is then allowed thoroughly to dry. This preliminary step in the process is used with heavy leather in order to toughen it and render it in a condition to be receptive to the compound when heated. The leather is then warmed to about 80 Fahrenheit. In the case of fine leatherssuch as are used in the uppers of boots and shoes, for instance-this heating of the leather is attained by placing it upon a heated slab, so that it is raised to a temperature of from 70 to 90 Fahrenheit, and it being remembered that the waterproofing compound is used at a temperature itself of from 70 to 90 Fahrenheit. I work in the latter either by rolling or rubbing, or in some cases by immersion, continuing the working in of the compound until it has penetrated through every pore, the length of time depending upon the quality and weight of the leather being operated upon. the leather is made absolutely waterproof. In order to complete the treatment, the leather thus impregnated with the compound is placed in an oven or other covered receptacle and submitted to heat of 80 to 100 Fahrenheit, so that the compound will find its way into every portion of the leather, and thereby prevent any dry spot therein which the rolling and working process may have chanced to miss.
Particularly in fine leathers the compound is worked into the hide from the flesh side by the rolling or rubbing process and is then subjected to heat in a covered receptacle, as above explained.
Having fully described my invention, what I claim, and desire to secure by Letters Patent, is
The process of rendering leather waterproof, consisting of dampening the leather and when the latter is partially dried, subjecting it to pressure, then allowing it to dry, heating the leather to approximately 80, applying a waterproof dressing thereto, while the leather is at said temperature, the dressing also being at substantially the same temperature, causing said dressing to thoroughly penetrate the leather, then baking or warming said leather in a chamber at a temperature from 80 to 100 more or less, substantially as described.
In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.
CHARLES H. STONE.
WVitnesses:
GEO. W. GREGORY, FREDERICK L. EMERY.
By this means
Publications (1)
Publication Number | Publication Date |
---|---|
US606882A true US606882A (en) | 1898-07-05 |
Family
ID=2675506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US606882D Expired - Lifetime US606882A (en) | Process of making waterproof leather |
Country Status (1)
Country | Link |
---|---|
US (1) | US606882A (en) |
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0
- US US606882D patent/US606882A/en not_active Expired - Lifetime
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