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Publication numberUS1195912 A
Publication typeGrant
Publication dateAug 22, 1916
Publication numberUS 1195912 A, US 1195912A, US-A-1195912, US1195912 A, US1195912A
InventorsL. W. Blanchard
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1195912 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

l H! v W; L. cmmmss & L. w. BLAH-SHARE.


' APPLICATION. min NOV. I2, I915.

Patented Aug. 22, 1916.


STATES PATENT wILLIm n cumves mm LAFAYETTE w. Emma, or Lssvmrwon'rn, I



Be it known that we, WILLIAM L CUM- M xes and LAFAYETTE W. BLANCHARD, citizens of the United States, residing at Leavenworth, in the county of Leavenworth and State of Kansas, have invented new and useful Improvements in Fraud-Detectors'of which the following is a specification.

This invention relates to means for detecting fraud corrections in checks, bills, law deeds and similar papers and flaws in precious stones.

Heretofo're', it has been the custom to endeavor to locate such fraudulent corrections or flaws b the use of a magnifying glass, but the etection of fraudin such papers or the flaws in valuable gems has not 1 method.

always been found to be successful by this It is, therefore, one of the principal ob jects of this invention to provide a amply constructed and readily operated device for accurately detecting flaws in gems and frauv as dulent'corrections in negotiable instruments which cannot be detected by the magnifying glam.

Further objectsof this invention will appear as the following specific description is read in connection with the accompanying drawings which form a part of thisapp ica tion, and in which Figure 1 is a side elevation. Fig. 21s a top plan view. Fig. 3 is a longitudinal section on the line 3-3 of Fig. 2. Fig. 4 is a" transverse section on the line 4-4 of Fig. 1.

In the specific embodiment of the invention as illustrated herein, I have mounted the mechanism upon a base-board 1 of any suitable type or size, so that the device may be made readily portable as a unit for purposes of convenience. Mounted upon the base-board adjacent one end thereof, is a casing 2, blackened insideto render the walls thereof more opaque and having a ventilator 3 projecting from its top to take ofi' any heat which may accumulate therein from the light to be hereinafter described. A second casing 4 is mounted 'adjacent'the'opposite end of. the board and is connected to the casing 2 by a tube 5 of opaque material, the

' casing 4 being preferably blackened inside' as is the casing 2. The casing 4 is provided. I with an inclined floor 6 and with an opening 7 in the side thereof through which the placed upon the floor 6.

Patented Aug. 22,1916. 1

Application filed November 12, 1915. Serial in. cans.

casing has projecting therefrom, a fiuoroscope 8 having a sight-opening indicated at 9. This fiuoroscope embodies the usual platinum cyanid screennot shown herein and is utilized for th inspection of flaws and fraudulent corrections'disclomd by the vi t rays to'be hereinafter described;

Located in the box or casing 2 in position to direct its rays of light through the tube 5,

is an incandescent light lQ receiving its source of current'from a storage battery 11 located within the casing. and in circuit with a switch 12 positioned upon the board 1 at any suitable point.

The H ht rays bulb in a ad ustable redectbr 13 mounted upon 8112. porting post ge; These reflected rays are W15 a" lens 15 tube which carried in a fra I8 a g; M h7g1 iii'i provided with a knurled head 10 by wh'iTflT'tlie i od be turned and the prism properl lid tedfo the of the rays i ses i. $51517 y the lens The ray's eiii'a nilting from the prism may, therefore, be directed to the check and as this prism, is preferably constructed of u'artz, or other s imilar' crystal the irected upon the inc incl l ii,o or gy r 'ascen engy, ow i g g'to thefa dt thatquartz and similar cry s tgl; WM, 1551 a trans parent to tliishprt wavegth vibrations of thenltra-vmletiays. These rays being mted iipdii tli fiegotiable paper or gem c 0P8 W1 tieg m mt fitialetmlemo ls.

will expose any defect or fraudulent correction which may be seen upon the screen of the fiuoroscope. o

' \Vhen utilized for detecting fraudulent corrections in bank checks and the like, the device may be placed in a convenient and out-of-the-way position so thatthe checks may be inserted and inspected without ing them, while when used for i arousing the suspicion of the person present- I gems or similar articles, it may be. placed in any convenient position.-

Vhat is claimed is:- An instantaneous fraud detector of the character and for the purpose described comprising, in combination, suitable means for suppqrting the bbjeqt to be tested, a

5 jct gnd a fluoroscope arrang to render 7:1 g y b gg sjfiiblemvthew y of an server to lndj i th under test.

igggx possible imperfections In testimdny'whel eof we afiix our signatunes in prwence of two witnwes WILLIAM L cUmnKGs. LAFAYETTE W. BLANCHABD.

Witness: v I

Gno. W. Bmcn'r;

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2541976 *Nov 22, 1947Feb 20, 1951Magnaflux CorpInstrument for inspecting the interior of cavities
US2548551 *Mar 10, 1949Apr 10, 1951Eastman Kodak CoApparatus for inspection of sensitized materials
US2620445 *Apr 3, 1951Dec 2, 1952Interchem CorpApparatus for determining daylight fluorescence
US5668377 *Mar 27, 1996Sep 16, 1997Erickson; WinPoint of sale counterfeit detection apparatus
U.S. Classification250/461.1, 359/223.1, 356/30
Cooperative ClassificationG01N21/64