US150548A - Improvement in the methods of preventing alterations of checks - Google Patents
Improvement in the methods of preventing alterations of checks Download PDFInfo
- Publication number
- US150548A US150548A US150548DA US150548A US 150548 A US150548 A US 150548A US 150548D A US150548D A US 150548DA US 150548 A US150548 A US 150548A
- Authority
- US
- United States
- Prior art keywords
- checks
- improvement
- methods
- preparation
- alterations
- 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
- 230000004075 alteration Effects 0.000 title description 4
- 238000000034 method Methods 0.000 title description 3
- 239000012530 fluid Substances 0.000 description 7
- 238000002845 discoloration Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 241000736873 Tetraclinis articulata Species 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- XOGGUFAVLNCTRS-UHFFFAOYSA-N tetrapotassium;iron(2+);hexacyanide Chemical compound [K+].[K+].[K+].[K+].[Fe+2].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] XOGGUFAVLNCTRS-UHFFFAOYSA-N 0.000 description 1
- BYGOPQKDHGXNCD-UHFFFAOYSA-N tripotassium;iron(3+);hexacyanide Chemical compound [K+].[K+].[K+].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] BYGOPQKDHGXNCD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/62—Rosin; Derivatives thereof
Definitions
- My invention consists in applying to the surface of checks, drafts, stamps, and other paper, a preparation of such a nature that when fluid of any kind is applied thereto for the purpose of altering; or removing the writing on the check, &c., or for removing the canceling-ink on stamps, &c., the fluid will combine with the preparation, and cause an inefl'aceable discoloration or stain on the article to which the preparation has been applied.
- such fluid will quickly combine with the ingredients of the applied preparation, and thus cause a discoloration or stain wherever the fluid has been applied, thus reliably indicating attempts at alterations of, tampering with, or removal of, the writing or cleansing of stamps previously used and canceled.
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Description
" UNITED STATES PATENT ()rrron .LOUIS H. G. EHRHARDT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO RICHARD B. WIZE, TRUSTEE, OF SAME PLACE.
IMPROVEMENT IN THE METHODS OF PREVENTING ALTERATIONS OF CHECKS, &c.
Specification forming part of Letters Patent No. 150,548, dated May 5, 1874 application filed November 3, 1873. e
To all whom it may concern.-
Be itxknown that I, LOUIS HENRY Gus TAVUS EHRHAR'DT, of the city and county of Philadelphia and State of Pennsylvania, have invented "a new and useful Process for Preventing Alteration of Checks, Drafts, &c., reuse of stamps, &c.; and I do hereby declare the following to be a clear and exact description of the nature thereof, sufflcient to enable others skilled in the art to which my invention appertains to fully understand, make, and use the same.
My invention consists in applying to the surface of checks, drafts, stamps, and other paper, a preparation of such a nature that when fluid of any kind is applied thereto for the purpose of altering; or removing the writing on the check, &c., or for removing the canceling-ink on stamps, &c., the fluid will combine with the preparation, and cause an inefl'aceable discoloration or stain on the article to which the preparation has been applied.
In carrying out my invention I take: Sulphate of iron, (dried 210 white sa1t,) ten parts; gallio acid, ten parts gum sandarac, four parts red or yellow prussiate of potash, one part.
These ingredients are finely pulverized, and well mixed or combined, and constitute a dry preparation ready for use.
I take a quantity of the preparation and merely rub or otherwise similarly apply it in a dry state to the surface of the check, draft,- receipt, document, revenue-stamp, postagestamp, or other article desired to be protected, either before or-after the same has been written upon, printed, or manufactured,
by the use of any fluid, whether acid, alkaline,
or neutral, such fluid will quickly combine with the ingredients of the applied preparation, and thus cause a discoloration or stain wherever the fluid has been applied, thus reliably indicating attempts at alterations of, tampering with, or removal of, the writing or cleansing of stamps previously used and canceled.
All efforts to remove the applied preparation by fluids of any kind will likewise be indicated by discoloration or stains, and thus the security of the paper is insured.
Having thus described my invention, what I claim as new, and desire to secure by Let ters Patent, is
The within-described compound, consisting of the ingredients and in about the proportions named, or their equivalents, andconstitut-ing a dry preparation for application to the surfaces of checks, drafts, stamps, and other papers, and operating to discolor the the paper when a fluid is applied thereto, for the purpose set forth.
L. H. e. EHRHARDT.
Witnesses:
J OHN A. WIEDERSHEIM, G. S. HETrtERINeToN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US150548A true US150548A (en) | 1874-05-05 |
Family
ID=2219961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US150548D Expired - Lifetime US150548A (en) | Improvement in the methods of preventing alterations of checks |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US150548A (en) |
-
0
- US US150548D patent/US150548A/en not_active Expired - Lifetime
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