Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1292326 A
Publication typeGrant
Publication dateJan 21, 1919
Filing dateMar 30, 1918
Priority dateMar 30, 1918
Publication numberUS 1292326 A, US 1292326A, US-A-1292326, US1292326 A, US1292326A
InventorsSidney D Jacobson
Original AssigneeSidney D Jacobson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Means for inspecting the interior of gas-engines and the like.
US 1292326 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

sac-M5 SR NW w y s. u. mcossou. f mums ros msrscnus we INTERIOR or GAS sucmzs' AND we 1mg.-

' ly 7 APPLICATION 'I'ILED Ill 30' {918- 1,292,326. Patented Jan. 21,1919.



. SIDNEY D. JAconsoN, or NEW YORK, N. Y.


To all whom it may concern:

Be it known that I, SIDNEY Darrmm J ACOBSON, residing at New York, in the county and State of New York, have invented certain new and useful Improvements in Means for Inspecting the Interior of Gas- Engines and the like, of which the following is a specification.

This invention relates to a new and improved optical device designed primarily to examine into the interior of gas engines and similar contrivances, whereby the observer can ascertain the interior condition of the en e. I

he device is intended to be used with a device for removing carbonaceous deposits from gas engines shown and described in my application jointlywith Joseph Strauss filed of even date herewith.

One of the objects of the invention is to provide a simple and efiicient device of this character of such construction that all parts of the interior of the gas engine may be inspected.

Other objects and aims of the invention, more or less specific than those referred to above, will'be in part obvious and in part pointed out in the course of the following description of the elements, combinations arrangements of parts and applications of principles, constituting the invention; and the scope of protection contemplated will be indicated in the appended claims.

In the accompanyin drawing, wherein I have illustrated a pre erred embodiment of my invention:

Figure 1 is a top plan view thereof.

Fig. 2 is a side elevation thereof, partly in section.

Fig. 3 is a sectional view taken on line 33 of Fig. 2, looking in the direction of the arrow.

Fig. 4 is a side elevation view thereof with a detachable part removed; and

Fig. 5 is a view of said detachable part.

Referring now to the drawings, wherein similar reference characters refer to similar parts, the reference numeral 1 denotes a tubular member, the upper end of which is provided with an aperture 2, to which the eye of the observer is to be applied, a suita le magnifying lens 3 being in position on the eye piece transversely of said tubular member. The lower end of said tubular member 1 is opened as at 4. Extending longitudinally of said tubular member 1,

Patented Jan. 21, 1919.

Serial No. 225,625.


and fastened to the same, is a small tube 5,

which is designed to inclose conducting wires which lead to an incandescent lamp 6, located at the lower end of the small tube 5, and opposite a lateral aperture 7 provided in the tubular member 1, the construction being such that the lamp 6 will illuminate the lower end of said tubular member 1.

The upper end of said tube 5 is offset, as at 8, to form a handle for the device. 9 de notes a detachable part comprising a tubular member formed to fit about the lower end of the tubular member 1, as well as the lower end of the tube 5, that is, it has a circular part 10 designed to have a sliding engagement with the lower end of the tubular member 1, and a semi-circular part 11 designed to fit over the tube 5. By means of this construction it will be noted that the part 9 is non-rotatably engaged with the tubular member 1. It will a so be noted that the member 9 is so disposed upon the lower end of the tubular member 1 that the rays emitted from the lamp 6 are not directly projected upon the mirror 13. The member 9 at its lower end is beveled off, as at 12, and carries at its lower end a mirror 13, which is set at an angle of 45 relative to the longitudinal axis of said member.

By means of the construction just described, it will be noted that the device may be inserted in the valve aperture of a gas en inc and when the incandescent lamp is lig ted the interior thereof may be readily observed in a manner which will be obvious.

When the part 9 is detached all parts of the en e beneath the device may be inspectec When, however, it is designed to inspect the lateral parts of the interior of an en e which are inaccessible to the device, t e art 9 may be attached thereto, as shown in ig. 2, whereb the light rays will be reflected in a lateral irection, and where-' by the parts of the engine out of alinement with the axis of the device may be examined.

It will accordingly be seen that I have provided a. device well adapted to attain, among others, all the aims and objects above pointed out in a simple yet efiicient manner, a simple construction, inexpensive to manufacture, and extremely useful for the purpose it is intended. a

As many changes could be made in this construction without departing from the scope of the followin claims, it is intended that all matter contamed in the above description or shown in the accompanying drawing shall be interpreted as illustrative onl and not in a. limiting sense.

aving thus described my invention what I claim as new and desire to secure by Letters Patent is: i

1. A device of the class described, comprising an elongated tubular member havmg an eye piece, means for illuminating said tubular member, and a detachable device having a reflector mounted upon one end of said tubular member.

2. A device of the class described, comprising an elongated tubular member having an eye piece, an illuminating device located in said tubular member at a position remote from said eye piece, and a detachable device provided with a reflector mounted upon the end of said tubular member adjacent said illuminating device.

3. A device of the class described, comprising an elongated tubular member having an eye piece, an illuminating device located in said tubular member at a position remote from said eye piece, a detachable device provided with a reflector mounted upon the end of said tubular member adjacent said illuminating device, and means whereby said detachable device and tubular member are held in non-rotative relation.

4. A device of the class described, in com- Gopies of this patent may be obtained for five eente elcm by addressing Wuhington, D. 0." 1

bination, an elongated tubular member provided with an eye piece, said tubular member'having a lateral-aperture near its lower end, a lamp located adjacent said aperture, a tube extendin lon tudinally of said tubular member adapteg for carrying the conducting wires to said lamp, and -'a' handle connected with said tubular member near its upper end through which said conducting 40 members extend.

5. A device of the class described, comprising an elongated tubular member r0 vided with an eye piece, a tube ext'en ing longitudinally of said tubular member,' the 5 lower end of which is provided with jalamp, said tubular member being providedwith a lateral aperture adjacent said la rip, and said tube being adapted to carr the conducting 7 wires to said lamp, a secon tubular, member 9 adapted to be positioned upon said tubular member at the lower end thereof so as to register therewith, and a reflector carried upon the lower end of said second named tubular member. 1 In testimony whereof I afiix mysignature in the presence of two witnesses. g,


Witnesses: I i I EMMA WEINBERG, a IRVING A. Ham,

the "cbmmiut PM" '1 I

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2479237 *May 16, 1946Aug 16, 1949American Cystoscope Makers IncExamining instrument
US3435820 *Feb 16, 1966Apr 1, 1969Stanley TaubIlluminating endoscope with detachable shield
US3945375 *Apr 30, 1973Mar 23, 1976Surgical Design CorporationRotatable surgical instrument
US5052802 *Jul 24, 1990Oct 1, 1991Hewlett-Packard CompanyDevice for viewing beneath circuit boards
US5644438 *Oct 30, 1995Jul 1, 1997Pottash; Paul C.Optical device for viewing into restricted areas
US6853448 *Jun 14, 2002Feb 8, 2005Karl J. LenzMulti-directional mirror device and method for optical inspection and autofocus measurement of objects
US7356936Jan 14, 2004Apr 15, 2008Honda Motor Co., Ltd.Apparatus and method for measuring coating accumulations in a spray booth
U.S. Classification359/503, 359/726, 600/248, 359/798, 362/109
Cooperative ClassificationG02B23/08