US1259981A - Method of fixing finger-prints. - Google Patents
Method of fixing finger-prints. Download PDFInfo
- Publication number
- US1259981A US1259981A US17278417A US17278417A US1259981A US 1259981 A US1259981 A US 1259981A US 17278417 A US17278417 A US 17278417A US 17278417 A US17278417 A US 17278417A US 1259981 A US1259981 A US 1259981A
- Authority
- US
- United States
- Prior art keywords
- prints
- fixing finger
- pigment
- shellac
- oily
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/117—Identification of persons
- A61B5/1171—Identification of persons based on the shapes or appearances of their bodies or parts thereof
- A61B5/1172—Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
Definitions
- ing agent in the form of finely powderedshellac, gum, or other suitable adhesive
- able solvent such as grain or. Wood alcohol,-
- the developing powder which has heretofore been used consisted of lamp blacker other pigment and a body substance, such as wheat flour.
- I may addthe powderedshellac, gum, or other material to this'pow der, or'may substitute or. .the whole or a portion of the body material, the powdered material.
- g v l A The method ofoperation is aSjOlZlfOWsf-g a i
Description
shellac or its equivalent a'dhe'sive or coating;
-' STAT EDWIN HEDRICK, 0F KENILWOBTH, ILLINOIS.
, METHOD OIF FIXING: FINGER-PRINTS.
3T0 Drawing.
To all whom it may concern:
Be it known that I, EDWrN Hnnmon, a citizen of the United States, residing at village of Kenilworth, in the county of Cook .and State of Illinois, have inventedcertain "after which the oily and practically invisible lines are, so to speak, developed by dust ng over them a material containing a pigment so that the lines become clearly visible. To preserve these lines and to prevent smearing or obliteration, the imprint-is sprayed with a fixing material, such as a solution of shellac in alcohol. 1
By the present method, Tmmix-with the developing powder a latent binding or fix:
ing agent in the form of finely powderedshellac, gum, or other suitable adhesive, and
then spray onto the developed pr'iiit a suit,-
able solvent, such as grain or. Wood alcohol,-
by, which means the finely owdered Qadh; sive material is dissolved an there is formed over the print a transparent covering:
' The developing powder which has heretofore been used consisted of lamp blacker other pigment and a body substance, such as wheat flour. I may addthe powderedshellac, gum, or other material to this'pow der, or'may substitute or. .the whole or a portion of the body material, the powdered material. g v l A The method ofoperation is aSjOlZlfOWsf-g a i The fingers, if rnot suificiently oily, tfilgf/ pressed-upon spela-lly. prepared oil tcai-daqoi ii which consists in pressing the oily '.:as a 1coho1-.=
Specification of-Letters Patent. t t a 19, 191&
Application filed June 4,1917. Serial No. 172,784.
rubbed upon the hair, and the oily fingers are thenv pressed upon paper or other suitable surface. The practically invisible prints are then dusted with the developing powder comprising the pigment and the powdered shellac, with or without additional powsolution of the adhesive in the solvent. Y
While I havedescribed my invention in detaiLit is to be understood that it is not limited to theparticular materials specified,
except as indicated in the claims.
I cl m. l. .TThe process of making finger prints which consists in pressing the oily fingers on an impression surface, dusting the impression with a powder containing a pigment and an adhesive, and then spraying onto. said impression a solvent for said adh s' ve.e
2.. The process of making finger rints on an impression surface, dusting the impression with a powder containin a pigment and-shellac, and then spraying onto "In test mony whereof Iiaflir: my signature 1 i ",in'pre'senoe ofgrtwo witnesses.
- nDWIN HEDRICK,
.WAILTER F; LYNCH, Ivan Srarnnns.
ngers saidim ression a solvent for the shellac such.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17278417A US1259981A (en) | 1917-06-04 | 1917-06-04 | Method of fixing finger-prints. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17278417A US1259981A (en) | 1917-06-04 | 1917-06-04 | Method of fixing finger-prints. |
Publications (1)
Publication Number | Publication Date |
---|---|
US1259981A true US1259981A (en) | 1918-03-19 |
Family
ID=3327661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17278417A Expired - Lifetime US1259981A (en) | 1917-06-04 | 1917-06-04 | Method of fixing finger-prints. |
Country Status (1)
Country | Link |
---|---|
US (1) | US1259981A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2986831A (en) * | 1958-09-10 | 1961-06-06 | Atlantic Res Corp | Process for lifting skin imprints |
US4226740A (en) * | 1979-02-09 | 1980-10-07 | Criminalistics, Inc. | Infra-red responsive fingerprint composition and method of making |
WO2016128903A1 (en) | 2015-02-10 | 2016-08-18 | Tubitak | Production of humic acid based powders for latent fingerprint detection |
-
1917
- 1917-06-04 US US17278417A patent/US1259981A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2986831A (en) * | 1958-09-10 | 1961-06-06 | Atlantic Res Corp | Process for lifting skin imprints |
US4226740A (en) * | 1979-02-09 | 1980-10-07 | Criminalistics, Inc. | Infra-red responsive fingerprint composition and method of making |
WO2016128903A1 (en) | 2015-02-10 | 2016-08-18 | Tubitak | Production of humic acid based powders for latent fingerprint detection |
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