US1878877A - Scanning disk - Google Patents

Description

Sept. 20, 1932. F. E. MILLER 1,878,877

SCANNING DI SK Filed June 27, 1930 2 Sheets-Sheet l INVENTOR ATTORNEY 23), 1932; F MILLER I 1,878,877

SCANNING DISK Filed June 27, 1930 2 Sheets-Sheet 2 ATTORNEY Patented Sept. 20, 1932 V UNAITEDNSTATES SCANNING DISK Application filed June 27,

This invention has reference to electric transmission of views or pictures to a distant'point and particularly to television.

An object is the provision of simple means for bringing a televised view, picture, or image in focus (or squaring the same as it is usually termed) after the image has been synchronized.

A further object is the provision of a means for this purpose in which the scanning disk is centrally mounted on the shaft of a motor and supported in bearings whereby the motor and disk can be simultaneously turned in the hearing so that the televised vision may be brought to the exact position or square with respect to the frame of the picture without interfering with the speed of the motor or the speed of the scanning disk.

The invention will be fully and comprehensively understood from a consideration of the following detailed description when read in connection with the accompanying drawings which form part of the application, with 'the understanding, however, that the improvement is capable of extended application and is not confined to the exact showing of the drawings nor to the precise construction described and, therefore, such changes and 'modifications may be made therefrom as do not alfect the spirit of the invention nor exceed the scope thereof as expressed in the appended claims.

In the drawings:

Figure 1 is a side elevation of the improvement.

Figure 2 is a sectional view approximately on the line 22 of Figure 1.

Figure 3 is a plan view of the improvement.

Figure 4 is a rear end view thereof.

As the art to which my invention relates is fully understood by those interested in television detail mention thereof is not believed necessary nor is it thought necessary to disclose the casing in which the scanning disk may be arranged, the lens from which the rays of light that pass through the apertures of the disk are transmittednor other details 1939. seria no. 4 4,405.

Of cOnstruCtiQn other than thmerelating to my; particular invention. As disclosedby the drawings the improve: ment includes asuitable' base 11 fromv which there arisesone orfmore bearings 2. In the showingof the drawings only a single bearing is provided and through thisfbearing. there is-passed the round or. nose end 3 for the casing 4:. ofan electricmotor. "As disclosed byFigure 2 ofthe'drawings the bear-.

ing support Qis constructed from 'a' single piece of suitable material bent upon itself to provide the rounded bearing proper and formed with depending. normally parallel legs 2 whose lowerends are ofiset to provide feet that are attached to the base 1. There. is passed through suitable alining openings in the legs2 a bolt ll which is engaged by a nut'12. The bolt when adjusted on the screw will force the legs 2 together, andconsek quently compress the roundbe'aring 2 against the. nose 3. ;This frictional contact is sulfi cient to prevent the accidental or free turning. of the motor-in itsbearing; The shaft of the motor isindicated by the numeral5 andrto the outerendof this shaft thereis centrally fixed; thescanning disk- 6. As. disclosed; by. the drawings the scanning diskis provided with a spirally arranged series of spaced small openings? forthe light rays. T he motor. on the end thereof opposite. that provided with: the nose is provided "with, a round extension 8 provided with around handle 9. which is preferably peripherally knurled. This. end of the motor casing hasfixed; thereto the vertical arm of a substantially. L-shapedjmemav ber 9 ,the longitudinal arm of the said bracket being in the path of contact with apivotallysupported stop member .10 hose pivoted end is received'in. a depression in the base 12f As disclosed by Figure 4 .of the drawings the pivot 1-3for the stop member l'O-is arranged inja' line with the vertical center of the mo-. tor {4, asis the LrShapedmember 9'; Also as disclosed by'the said-'figurethe opposite end" walls ll provided by the depressionf15, in. whichth e lower-end'ofthe'stop member 10, is received-5 are arranged at-opposite angles with. respectto each other,"each of said walls being struck-at anangle "of" approximately 45.

i As stated there is a frictional contact be- I tween the bearing 2 and the nose o fextension a stop finger having one end received and pivotally secured in the recess and its outer end in the path of contact with the angle end of the member, as and for the purpose set forth. In testimony whereof I atfix my signature.-

FREDERICK E. MILLER.

completerevolution in either direction and haltedwhen such revolution is completed. As disclosed by Figure 4 of the drawings the, angle end of the member 9" is in contact with one of the edges of the stop member 10 and therefore the motor cannot .be'revolved in the direction of thesaid stop 10. The motor, however, can be turned in a second direction or away from the stop and when the same has completed a revolution the angle end of the member 9"will contact with the second or outer edge ofthe stop 10, swinging the said stop to the dotted line position in said Figure 4 to cause the stop to rest upon the second angle end wall l l provided by the depres sion 15. Thus the stator structure may be given a complete revolution in'either of two directions. V

- Havingdescribed the invention, I claim:

' 1. A picture transmitting or receiving apparatus, including a rotary scanning disk, and

I a current'driven' motor on'whose shaft the disk is fixed, a base having a support affording a bearing for the motor casing adjacent the scanning disk, and the casing having its second end provided with a knob, a depending substantially L-shaped member fixed on the said end of the motor, and a pivo'tally sup-' ported stopelement in the base extending thereabove for contact with either side of the angle endof the bracket to cause a limited swinging of the stop element when the motor isfimparted a complete revolutionin one direction andsuch engagement of the angle member with the swingable stop preventing the turning of the motor in the direction of the stop susceptible for being sprung away from such contact. I e

2. A picture transmitting or recelving apparatus'which includes a rotary scanningdisk v and a current driven motor on whose shaft the disk is fixed and the casing for the motor having its ends provided with rounded extensions, acompressible bearing support carried by the base for the rounded extension of the casing adjacent the scanning disk, means for adjustably compressing the bearings, a

knurled operatinghead onthe end of the'second casing extens on, a member having an angle end depending from said extension, the,

base having a substantiallyV-shaped recess,

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