USRE3677E - Improvement in the manufacture of glue - Google Patents
Improvement in the manufacture of glue Download PDFInfo
- Publication number
- USRE3677E USRE3677E US RE3677 E USRE3677 E US RE3677E
- Authority
- US
- United States
- Prior art keywords
- glue
- manufacture
- salt
- improvement
- slices
- Prior art date
Links
- 239000003292 glue Substances 0.000 title description 16
- 238000004519 manufacturing process Methods 0.000 title description 14
- 239000011780 sodium chloride Substances 0.000 description 24
- 150000003839 salts Chemical class 0.000 description 22
- 238000000034 method Methods 0.000 description 18
- 238000001035 drying Methods 0.000 description 16
- 239000000243 solution Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000001828 Gelatine Substances 0.000 description 6
- 229920000159 gelatin Polymers 0.000 description 6
- 235000019322 gelatine Nutrition 0.000 description 6
- 235000015110 jellies Nutrition 0.000 description 4
- 239000008274 jelly Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000006011 modification reaction Methods 0.000 description 4
- 210000000003 Hoof Anatomy 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
Definitions
- my invention consists in an improved process of solidifying and drying the gelatinous menstruum, obtained in the usual manner, from any of the known materials, such as clippings of hides, hoofs, &c.; and whereas the application of my improvement requires no modification of the ordinary machinery used in the manufacture, it can be fully and clearly described without the use drawings.
- the stiffened gelatinous solution containing about eighty (80) per centum of water, is cut into slices, and these are exposed to the air for drying. This process of drying, is, however, the precarious stage in the manufacture of glue, as any disturbance of the weather may injure the product, especially during the first few days.
- My invention will obviate these difficulties, and not only avoid thereby the present risk in manufacturing, but also diminish the time and the number of handlings required in the process as now conducted.
- My improved process is as follows: After obtaining the gelatine in any ordinary manner from the usual materials, and having evaporated and cooled it to a due consistency, I out it, as usual, into slices. These slices I submerge in a solution of one part of salt in eight parts of water. After a lapse of about ten or twelve hours the slices assume a somewhat hardened and tough consistency. I now add two (2) parts more of dry salt to the men; struum, and allow the slices to remain in the same for ten or twelve hours longer. They will then be found so much hardened on the surface as to permit taking them out and wipthem off, to remove the salt adhering to the surface. The slices may now be rapidly dried by subjectin g them, in any appropriate place,
- the salt can be easily recovered by evaporation and used again.
- My above process of quick drying may be modified and made even more expeditious by placing the jelly into a solution of one (1) part of salt to three (3) parts of boiling water.
- This hot solution will deprive the jelly at once of its water, so'that it can be taken out almost immediately, washed off to remove the salt, and dried as above.
- method of quick drying in the hot saline solution imparts, however, to the glue an opaque whitish appearance, and is therefore only advantageous where this appearance of the glue does not lessen its commercial value on account of the absence of the customary transparent clearness of the better qualities of glue.
- Another modification of my process of quick drying consists in extracting a large amount of water from the gelatine by placing the slices upon or into a layer of dry salt, which should be finely broken or ground.
- the salt solutions or dry salt used in my improved process are weakened in direct proportion to the quantity of water extracted from the gelatine, and may be concentrated or entirely evaporated in suitable vessels, and then used again.
Description
-UNITED STATES HUGO FLEGK, OF DRESDEN, SAXONY, ASSIGNOR TO WILLIAM A. FLEOK,
PATENT OFFI E.
OF PHILADELPHIA, PENNSYLVANIA.
IMPROVEMENT IN THE MANUFACTURE OF GLUE.
Specification forming part of Letters Patent No. 90,160, dated May 18, 1869; Reissue No. 3,677, dated October 19, 1869.
T0 at whom it may concern;
Be it known that I, Dr. HUGO FLEoK, professor of chemistry at the Polytechnical School of Dresden, in the Kingdom of Saxony, have invented a new and useful Improve- I ment in the Manufacture of Glue; and I do hereby declare that the following is a full and exact description thereof.
The nature of my invention consists in an improved process of solidifying and drying the gelatinous menstruum, obtained in the usual manner, from any of the known materials, such as clippings of hides, hoofs, &c.; and whereas the application of my improvement requires no modification of the ordinary machinery used in the manufacture, it can be fully and clearly described without the use drawings.
In the manufacture of glue, as heretofore practiced, the stiffened gelatinous solution, containing about eighty (80) per centum of water, is cut into slices, and these are exposed to the air for drying. This process of drying, is, however, the precarious stage in the manufacture of glue, as any disturbance of the weather may injure the product, especially during the first few days.
My invention will obviate these difficulties, and not only avoid thereby the present risk in manufacturing, but also diminish the time and the number of handlings required in the process as now conducted.
My improved process is as follows: After obtaining the gelatine in any ordinary manner from the usual materials, and having evaporated and cooled it to a due consistency, I out it, as usual, into slices. These slices I submerge in a solution of one part of salt in eight parts of water. After a lapse of about ten or twelve hours the slices assume a somewhat hardened and tough consistency. I now add two (2) parts more of dry salt to the men; struum, and allow the slices to remain in the same for ten or twelve hours longer. They will then be found so much hardened on the surface as to permit taking them out and wipthem off, to remove the salt adhering to the surface. The slices may now be rapidly dried by subjectin g them, in any appropriate place,
to a temperature of from 40 to 1120 Fahrenheit. The salt can be easily recovered by evaporation and used again.
My above process of quick drying may be modified and made even more expeditious by placing the jelly into a solution of one (1) part of salt to three (3) parts of boiling water. This hot solution will deprive the jelly at once of its water, so'that it can be taken out almost immediately, washed off to remove the salt, and dried as above. method of quick drying in the hot saline solution imparts, however, to the glue an opaque whitish appearance, and is therefore only advantageous where this appearance of the glue does not lessen its commercial value on account of the absence of the customary transparent clearness of the better qualities of glue.
Another modification of my process of quick drying consists in extracting a large amount of water from the gelatine by placing the slices upon or into a layer of dry salt, which should be finely broken or ground.
The salt solutions or dry salt used in my improved process are weakened in direct proportion to the quantity of water extracted from the gelatine, and may be concentrated or entirely evaporated in suitable vessels, and then used again.
Having thus described the nature of my invention, I do not intend to limit its practi cal application to the exact described proportions of salt in the drying solutions, nor do I confine myself to the use of any particular kind of saltin the process, since various alkaline or metallic salts are applicable for the purpose; but
What I claim as my invention, and desire to secure by Letters Patent, is
The herein-described use of salts, either dry or in solution, in the process of drying glue.
HUGO FLEOK, Per WILLIAM A. FLEOK,
Sole Owner of Patent.
IVitnesses:
N. G. BURNHAM, A. BIMMER.
This last
Family
ID=
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