US2020964A - Apparatus for testing and assorting - Google Patents

Apparatus for testing and assorting Download PDF

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US2020964A
US2020964A US2020964DA US2020964A US 2020964 A US2020964 A US 2020964A US 2020964D A US2020964D A US 2020964DA US 2020964 A US2020964 A US 2020964A
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lamp
solenoid
circuit
armature
lamps
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34Sorting according to other particular properties
    • B07C5/344Sorting according to other particular properties according to electric or electromagnetic properties
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/01Subjecting similar articles in turn to test, e.g. "go/no-go" tests in mass production; Testing objects at points as they pass through a testing station

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  • Fig.3 is a percandescent lamps and more particularly'to apparatus for automatically: assorting lamps according to their luminous efliciency.
  • One object 'of our invention is to provide anapparatus, which will be entirely automatic, for determining the luminous efliciency, that is, the lumens per watt ratio, of. electric incandescent lamps and assorting said lamps according to the value of said ratio.
  • the life of an incandescent lamp depends chiefly upon the operating temperature of the filament which, in turn, depends directly upon the luminous efliciency, so that the life of the lamp may be predicted upon the determination of said luminous efliciency: This was formerly done by determining the intensity factorin lumens with a photometer and the input factor with a wattmeter and dividing the lumens by the watts.
  • Our invention dispenses with such :0 a calculation.
  • a portion of the screen which indicates allowable values of luminous efliciency is'madetransparent while the rest of the screen is impervious to light. If the light beam strikes the transl0 parent portion of the screen it passes therethrough to a photo-electric cell which operates" to allow the lamp to assume its normal course after delivery. It, on the other hand, the light beam strikes the non-transparent part of the screen, it fails to reach the'photo-electric cell and a solenoid becomes energizedand opensa-trap door through which the defective lamp drops after being released from thejaws of the spider.
  • Fig. 4 shows a chart used to show the value of luminous efliciency of a lamp under test.
  • the lamp is indexed to position B, a preliminarytest posi- 10 tion for the determination of the existence of a broken filament-or a short circuit, where it engages contacts of a circuit l3 which is energized by a source of electrical energy l4 operating at approximately half the normal voltage of the 18 lamp.
  • Said circuit i 3 also comprises two solenoids l5, IS, the armatures l1, l8 of which are normally held against contacts I9, 20 by springs 2
  • the armatures l1, l8 are located in a. circuit com- .20 p g a source of electric energy 23 and a solenoid 24.
  • An'armature 25 of said solenoid 24' is in the form of a pawl, a finger 28' of which normally engages a latch 21 due to the pullpfia spring28.
  • Said latch 21 is actuated by a spring 25 29 when it-is released by the pawl 26.
  • the solenoid 24 will be energized due to the fact that armatures i1 and I8 remaip against 30 the contacts I9, 20.
  • the armature 25 will then be drawn over and disengage finger 26 from the latch 21 which moves up to the position shown in dotted lines.
  • the solenoid I5 is so designed that it is actuated by the flow of a comparatively small amount of current while solenoid i6 does not function unless a comparatively heavy current flows so that if. the lamp is not short-circuited, and the filament is intact, 'onlythe solenoid l5 will be energized.
  • the arma- 40 ture I! will be drawn from the contact l9 to a contact 30 and the circuit throughsolenoid 24 will be broken at a contact 3
  • the lamp I 8 is indexed to position C where automatic determination of the luminous efliciency takes place.
  • a pair of contacts 32 which are normally open. If the lamp tested at B has neither a broken filament nor a short circuit, the latch 21, being in the down position, will not affect the open position of contacts 32, but if the latch is inthe upper position, due to a defective lamp, it willstrike the contacts 32, and bring them together.
  • the purpose of closing said contacts 32 is to render inoperative the lamp l8 has passed the test at position B the 86 the eficiency measuring means at position C.
  • the circuit of contacts 32 comprises asource of energy 33 and asolenoid 34.
  • latch 21 will not disturb the open position of contacts '48; but-if the bulb is defective, said latch 21 will act to close the contacts 48 which will cause the solenoid 42 to be energized, thereby drawing down the combined armature and pawl 38 to allow the armature 35- to swing back to contact 31 so that the efficiency measuring circuit at C is rendered operative for the next lamp.
  • the latch 21, it it is in its outward position by virtue of a defective bulb will close a pair of contacts 43 which are located in a circuit comprisingv a source of electrical energy 44 and a-solenoid 45.
  • Said solenoid 45 becoming energized, will attract an armature 46 which forms a door in the bottom of a delivery chute 41 and is normally held up by aspring 48.
  • the lamp I8 is released at position D and slides down'the chute 41, so that it said lamp is defective it will drop through the door 46 into a container 49.
  • the solenoid 45 comprises a parallel circuit by means of which current continues to flow through it after the latch 21 has left the contacts 43 so as to'hold open the door 46 until the lamp has been released at position D, after which the parallel or holding circuit is interrupted so that the door 46 may be drawn to a closed position by the spring 48.
  • the said parallel or holding circuit comprises a conductor 88 connected to one end oi'the cor or armature 46 and to the side of the solenoid 45' on whichthe contact points 43 are located.
  • is connected to the side of the source 44 of electrical energy on which the contactpoints 43 are located; Said'conductor 8
  • a conductor extends from the con-' tact point 83 to another contact point 86 disposed in the path of travel of the armature 46 so as to be in contact therewith when said arma+ a screen 68.
  • the holding circuit functions as follows:
  • the solenoid 45 is energized, as hereinl before explained, and attracts the armature 46 the said holding circuit through the solenoid 45 and allowingthe door 48 to close.
  • the measurement 2( of the efliciency of the lamp takes place at position C.
  • a photometer sphere58 into which the lamp is introduced, said sphere being made impervious to light by means or curved portions 5l' provided on the spider I: which close up a slot provided in said sphere 58 to allow for the passage of the lamp there-' through.
  • said lamp l8 engages the contacts of a circuit comprising a source of electrical energy 52, the armature 35, and a wattmeter 53.
  • light rays 54 leave a projector 55 in the form of a small beam of substantially parallel rays and strike a mirror 56 mounted on the axis of the pointer of a direct reading photometer 51, located in the sphere 58. Said beam 54 3 is reflected itrom said mirror 56 and passes through a reversing prism 58,,the base of which .is inclined at an angle of 45 to the horizontal,
  • the ray 54 which oscillates in ahorizontal plane by the movement of the pointer of the 4 photometer 51, oscillates in a vertical plane after leavingsaid prism 58.
  • the beam 54' then strikes a .a second mirror 59 mounted on the axis of the pointer of the watt-meter 53, and is reflected to It is also possible to mount the4 photometer 51 and wattmeter 53 with the axes oi! the pointers at right angles and dispense with the prism 58.
  • the screen -68 is calibrated as shown by the chart in Fig. 4 in terms of lumens on the ordinate l and watts on the abscissa, so that the beam 54 produces a point of light on said screen 68 which indicates the ratio of lumens to watts.
  • the point of light strikes the chart at E. This would indicate that with an input I of 25 watts, the lamp yields-a flux of 250 lumens for a luminous efilciency of 10 lumens per watt.
  • points of light at F and G would indicate a luminous efiiciency of 10 lumens per watt, and a line a drawn through said points E, F and G would then indicate a luminous efiiciencyof 18 lumens per watt ior any point falling thereon.
  • a line b would indicate-all points at which the efllciency of the lamp is li'lumens per watt and a line c would indicate all points corresponding to an efliciency of 8 lumens per watt.
  • a section 61 of the screen 68 (Fig. 3) represents an area of the chart of Fig. -4-within which the beam 54 would be considered as having an acceptable value, that is, it the beam 54 falls within said area 6
  • a semi-transparent mirror 62 comprising a glass plate with plane and parallel faces lightly silvered on thedrcnt surface, is
  • the reflected beam 64 passes through the transparent area 8
  • a screen 61 similar to screen 60 is provided in the path of the beam 63 merely for p p ses otproviding a visible indication of the exact rating of the lamp being tested apart from the actual control screen 60, so that the mirror 62 and screen 61 could be eliminated and the screen 60 placed in the position of said screen 6! with the photo-electric cell 66 of course disposed behind it. If the light beam 64 passes through the allowable area 6
  • the cathode I2 is also in a circuit comprising a source oi. energy 1.8, a solenoid 9
  • the current impulse which energizes the solenoid I4 and opens the door I6 is arranged to take place just before the lamp leaves position C (Fig. l) by means of a timed contact.
  • the said time contact mechanism is illustrated asa pair of segments 81-88 mdunted on a disc 89 on a shaft 90 which makes one complete revolution for each indexing of spider I2.
  • a solenoid 9I which is connected on one side to the said source I3 and on the other side to a. conductor 92 and contact 93, segment 81, contact 94 and conductor 95 to the anode I of tube II.
  • which acts on an armature 96.
  • Said circuit comprises a contact point 91, which the armature 96 engages when attracted by the'solenoid 9 I a conductor 98, contact 99, the segment 88, a contact point I08,
  • conductor IOI resistance I 02 equalto the resistance of the tube II, and conductor I03 which is.
  • armature 96 is connected on the same side of the source 18 as cathode I2.
  • the end of armature 96 is connected to the end of solenoid 9! on the same side as segment 81.
  • Said armature 96 is normally held open by a spring I04.
  • the solenoid I4 is actuated by a. source I05 through a conductor I06, conductor 98, armature 96 and conductor I01. 5
  • the operation of these circuits is as follows:
  • the segment 81 is arranged at-such a position on the disc 89 that it will not close the circuit through the solehold 9
  • An apparatus for testing and assorting elec-- tric lamps comprising a photometer chamber, means for automatically inserting into and removing lamps from said chamber, means for measuring automatically the luminous efliciency of said lamps comprising a measuring instrument indicating lumens and a second measuring in- 80 strument indicating energy input, and means for producing a light beam which is deflected by mirrors which are in turn actuated by said measuring instruments and means for assorting said lamps comprising a screen disposed in the path of said light beam which passes said beam to or obstructs it from a photo-electric cell according to the luminous efliciency of the lamp, and means controlled by said cell for determining the path of discha'rge'of the lamp under test from the 70 apparatus.
  • An apparatus for testing and asserting electric lamps comprising a revolving carrier for said lamps, a circuit into which a lamp is introduced for the determination of the existence or nonexistence of a broken illament or short circuit which circuit comprises a plurality oi solenoids which operate to reject detective lamps, means for measuring automatically the lumens per watt ratio of said lamps comprising a measuring instrument indicating lumens and a second measuring instrument indicating energy input and means for producing a light beam which is deflected by mirrors which are in turn actuated by said measuring instruments and means for assorting said lamps comprising a screen disposed in the path of said light beam which passes said beam to or obstructs it from a photo-electric cell according to the luminous eiiiciency of the lamps and means controlled by said cell for determiningthepath of dischargeotthelampundertest from the apparatus.
  • An apparatus for testing and asserting electric lamps comprising a revolving carrier for said lamps, a circuit into which a lamp is introduced for the determination of the existence or non-existence of a broken filament or short circuit which circuit comprises a plurality of solenoids which operate to reject detective lamps, means cooperating with said circuit for rendering inoperative alight output measuringcircuit in case a lamp is defective, means for measuring automatically the lumens per watt ratio of said lamps compris- 5 ing a measuring instrument indicating lumens and a second measuring instrument indicating energy input and means for producing a light a beam which is deflected by mirrors-which are'in turn actuated by said measuring instruments and 10 means for asserting said lamps comprising a screendisposed in the path of said light beam which passes said beam to or obstructs it from a photo-electric cell according to the luminous eiiiciency of the lamp and means controlled by said cell for determining the path or discharge 0! the lamp under test from the apparatus.
  • MAX 1 caoss mmr.

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  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Description

Nov. 12, 1935. c. REITER'ET AL 2,020,964
APPARATUS FOR TES'I'ING AND ASSORTING ELECTRIC INCANDESCENT LAMPS Filed Dec. 28, 1931 Z Sheeis-Sheet 1 IIIIMIM .DWE TQRE EAsF/ua REZTER. I I PIL THEA-WTNFRIED L BEBE- CUAT Smsazv FELIX B05511" NAXR. GR assmzvm Tamra. Arran er? Nov. 12, 1935. c; REIT-ER El AL 2,020,964
APPARATUS FOR TESTING AND ASSORTING ELECTRIC INCANDESCENT LAMPS I Filed Dec. 28, 1931 2 Sheets$heet 2 v 67 r f 2 c3 7 Watts .Z'WENTERE EAEPAR REITE'R I I IAL-THER-I I Y NPRIEZ? Lazar BURT SAMEUN FELIX Baas NAXTR.5R US5MANN T's/22m A'rrazuvzrr" "Patented Nov. 12, 1935 APPARATUS FOR TESTING ASSORTING ELEQTRIC INCANDESCENT LAIVIPS Our invention relates to testing of electric inelm. lbeiter, Berlin-Treptow, and Walther- Winiried Loebe; 'Berlin-Waidmannslust, and Curt Samson, Felix Bobck, and Max B; Grossmann, Berlin, Germany, assignors to} General v Electric Company, a corporation oi New York Application December.28, 1931, 'Sel'ial No. 583,51'0
In Germany January28, 1931 3 Claims. (01.209 81) ing to their luminous efllciency; Fig.3 is a percandescent lamps and more particularly'to apparatus for automatically: assorting lamps according to their luminous efliciency.
5 One object 'of our invention is to provide anapparatus, which will be entirely automatic, for determining the luminous efliciency, that is, the lumens per watt ratio, of. electric incandescent lamps and assorting said lamps according to the value of said ratio. The life of an incandescent lamp depends chiefly upon the operating temperature of the filament which, in turn, depends directly upon the luminous efliciency, so that the life of the lamp may be predicted upon the determination of said luminous efliciency: This was formerly done by determining the intensity factorin lumens with a photometer and the input factor with a wattmeter and dividing the lumens by the watts. Our invention. dispenses with such :0 a calculation.
We accomplish the above-mentioned objects by supplying the lamps to the jaws'oi an indexing spider which carries the lamps to a position where they are first. tested for broken filaments or short :5 circuits. If a lamp has either of these defects it will continue around with the spider but when released therefrom, diverting means will operate to guideit into a special receptacle. From this preliminary test position, the lamp is introduced into a photometer sphere for determination of -the luminous efliciency. Said efficiency is recorded by means of a lightbeam which is deflected by mirrors which are in turn actuated by a direct reading photometer and a wattmeter, said light 35 beam being directed, after reflection, upon a screen. A portion of the screen which indicates allowable values of luminous efliciency is'madetransparent while the rest of the screen is impervious to light. If the light beam strikes the transl0 parent portion of the screen it passes therethrough to a photo-electric cell which operates" to allow the lamp to assume its normal course after delivery. It, on the other hand, the light beam strikes the non-transparent part of the screen, it fails to reach the'photo-electric cell and a solenoid becomes energizedand opensa-trap door through which the defective lamp drops after being released from thejaws of the spider.
Additional features and advantages of our in- 50 vention will appear from the following detailed spective view of the automatic means for luminous. efliciency measurement; and Fig. 4 shows a chart used to show the value of luminous efliciency of a lamp under test.
Referring to Fig. 1, lamps ill to be tested'are' supplied at position A to jaws H mounted on a spider 12, either directly. from a base cementing machine (not shown) or by hand. The lamp is indexed to position B, a preliminarytest posi- 10 tion for the determination of the existence of a broken filament-or a short circuit, where it engages contacts of a circuit l3 which is energized by a source of electrical energy l4 operating at approximately half the normal voltage of the 18 lamp. Said circuit i 3 also comprises two solenoids l5, IS, the armatures l1, l8 of which are normally held against contacts I9, 20 by springs 2|, 22, said contacts I9, 20 being interconnected. The armatures l1, l8 are located in a. circuit com- .20 p g a source of electric energy 23 and a solenoid 24.. An'armature 25 of said solenoid 24' is in the form of a pawl, a finger 28' of which normally engages a latch 21 due to the pullpfia spring28. Said latch 21 is actuated by a spring 25 29 when it-is released by the pawl 26. In case the bulb at position B has a broken filament there will of course be no flow of currentin the circuit 43, but the solenoid 24 will be energized due to the fact that armatures i1 and I8 remaip against 30 the contacts I9, 20. The armature 25 will then be drawn over and disengage finger 26 from the latch 21 which moves up to the position shown in dotted lines. The solenoid I5 is so designed that it is actuated by the flow of a comparatively small amount of current while solenoid i6 does not function unless a comparatively heavy current flows so that if. the lamp is not short-circuited, and the filament is intact, 'onlythe solenoid l5 will be energized. In this case the arma- 40 ture I! will be drawn from the contact l9 to a contact 30 and the circuit throughsolenoid 24 will be broken at a contact 3| which is connected to contact 30,-thereby resulting in the non-energlzation of said solenoid 24. Since solenoid 24 is not energized the armature 25 is'not attracted and the finger 26 keeps the latch 2'! in place. Finally, if the lamp I0 is short-circuited, both solenoids l5 and IE will be energized and will draw the armatures i1 and I8 to the contacts 30 and 3|, thereby completing the circuit through the solenoid 24 and drawing the finger 26 out of engagement with the latch 21 which moves up. Durins the subsequent indexing the latch 21 rotates along with the lamp so that said latch may be mounted on the spider l2. A latch is provided for each of the receiving Jaws II, but only one of said latches is shown in the drawings in several diflerent positions for clearness.
Fromposition B the lamp I 8 is indexed to position C where automatic determination of the luminous efliciency takes place. Between positions 3 and C are located a pair of contacts 32 which are normally open. If the lamp tested at B has neither a broken filament nor a short circuit, the latch 21, being in the down position, will not affect the open position of contacts 32, but if the latch is inthe upper position, due to a defective lamp, it willstrike the contacts 32, and bring them together. The purpose of closing said contacts 32 is to render inoperative the lamp l8 has passed the test at position B the 86 the eficiency measuring means at position C. The circuit of contacts 32 comprises asource of energy 33 and asolenoid 34. An armature 35 of solenoid 34 is drawn from the position shown by dotted lines, where it is normally held by a spring 36, to that shown in full lines, thereby breaking, at contact 31, the measuring circuit which is fully described hereinafter, The end of armature 35, in drawing toward the solenoid 34, slides across the face of a pawl 38 which is drawn up by a spring 39 to hold said armature 35 awayirom the contact 31 during the duration of the bulb l8 at-position C; Between positions C and D are located another pair of contacts 48 which are disposed in a circuit comprising a source of electrical energy 4| and a solenoid 42 having for its armature the pawl 38. As with contacts 32, if
latch 21 will not disturb the open position of contacts '48; but-if the bulb is defective, said latch 21 will act to close the contacts 48 which will cause the solenoid 42 to be energized, thereby drawing down the combined armature and pawl 38 to allow the armature 35- to swing back to contact 31 so that the efficiency measuring circuit at C is rendered operative for the next lamp. Shortly after leaving the contacts 48, the latch 21, it it is in its outward position by virtue of a defective bulb, will close a pair of contacts 43 which are located in a circuit comprisingv a source of electrical energy 44 and a-solenoid 45. Said solenoid 45, becoming energized, will attract an armature 46 which forms a door in the bottom of a delivery chute 41 and is normally held up by aspring 48. The lamp I8 is released at position D and slides down'the chute 41, so that it said lamp is defective it will drop through the door 46 into a container 49. The solenoid 45 comprises a parallel circuit by means of which current continues to flow through it after the latch 21 has left the contacts 43 so as to'hold open the door 46 until the lamp has been released at position D, after which the parallel or holding circuit is interrupted so that the door 46 may be drawn to a closed position by the spring 48. The said parallel or holding circuit comprises a conductor 88 connected to one end oi'the cor or armature 46 and to the side of the solenoid 45' on whichthe contact points 43 are located. A conductor 8| is connected to the side of the source 44 of electrical energy on which the contactpoints 43 are located; Said'conductor 8| t extends to a contact point 82 which is normally in contact with a second point 83, said contact point 83 being heldin the closed position by a spring 84. A conductor extends from the con-' tact point 83 to another contact point 86 disposed in the path of travel of the armature 46 so as to be in contact therewith when said arma+ a screen 68.
ture 46 is in the position shown in dotted lines. The holding circuit functions as follows:
When-the finger 21, in its extended position,
passes across the contact points 43 and closes them, the solenoid 45 is energized, as hereinl before explained, and attracts the armature 46 the said holding circuit through the solenoid 45 and allowingthe door 48 to close.
As hereinbefore mentioned, the measurement 2( of the efliciency of the lamp takes place at position C. Here is provided a photometer sphere58 into which the lamp is introduced, said sphere being made impervious to light by means or curved portions 5l' provided on the spider I: which close up a slot provided in said sphere 58 to allow for the passage of the lamp there-' through. 'Said lamp l8 engages the contacts of a circuit comprising a source of electrical energy 52, the armature 35, and a wattmeter 53. Referring to Fig. 3, light rays 54 leave a projector 55 in the form of a small beam of substantially parallel rays and strike a mirror 56 mounted on the axis of the pointer of a direct reading photometer 51, located in the sphere 58. Said beam 54 3 is reflected itrom said mirror 56 and passes through a reversing prism 58,,the base of which .is inclined at an angle of 45 to the horizontal,
so that the ray 54 which oscillates in ahorizontal plane by the movement of the pointer of the 4 photometer 51, oscillates in a vertical plane after leavingsaid prism 58. The beam 54' then strikes a .a second mirror 59 mounted on the axis of the pointer of the watt-meter 53, and is reflected to It is also possible to mount the4 photometer 51 and wattmeter 53 with the axes oi! the pointers at right angles and dispense with the prism 58.
The screen -68 is calibrated as shown by the chart in Fig. 4 in terms of lumens on the ordinate l and watts on the abscissa, so that the beam 54 produces a point of light on said screen 68 which indicates the ratio of lumens to watts. Let us assume that the point of light strikes the chart at E. This would indicate that with an input I of 25 watts, the lamp yields-a flux of 250 lumens for a luminous efilciency of 10 lumens per watt. Similarly, points of light at F and G would indicate a luminous efiiciency of 10 lumens per watt, and a line a drawn through said points E, F and G would then indicate a luminous efiiciencyof 18 lumens per watt ior any point falling thereon. Similarly a line b would indicate-all points at which the efllciency of the lamp is li'lumens per watt and a line c would indicate all points corresponding to an efliciency of 8 lumens per watt. A section 61 of the screen 68 (Fig. 3) represents an area of the chart of Fig. -4-within which the beam 54 would be considered as having an acceptable value, that is, it the beam 54 falls within said area 6|, the luminous efliciency o! the lamp under test is acceptable.
Referring to Fig. 2, a semi-transparent mirror 62, comprising a glass plate with plane and parallel faces lightly silvered on thedrcnt surface, is
placed in the path of the beam of light 64 at. an angle of 45 thereto so that a portion 68 of the beam goes through said mirror and a portion 64 is reflected at an angle of 90. The reflected beam 64 passes through the transparent area 8| of the screen 60 and through a condensing lens 65 to a photo-electric cell 66, provided the luminous efllciency of the lamp is an allowable one as otherwise the beam 64 will strike the non-transparent screen 60 outside the area 6|. A screen 61 similar to screen 60 is provided in the path of the beam 63 merely for p p ses otproviding a visible indication of the exact rating of the lamp being tested apart from the actual control screen 60, so that the mirror 62 and screen 61 could be eliminated and the screen 60 placed in the position of said screen 6! with the photo-electric cell 66 of course disposed behind it. If the light beam 64 passes through the allowable area 6| and strikes the photo-electric cell 66 it sets up a current in the circuit of that cell, which comprises a source of electrical energy 68, a large'resistance 69, which is preferably a'nother photo-electric cell, a grid 10 of an amplifying tube II, and a cathode I2 of said tube II. The cathode I2 is also in a circuit comprising a source oi. energy 1.8, a solenoid 9|, which in turn influences a solenoid I4 and an anode I5 of the tube II. Due to the energization of the grid I by the vflow of current through the circuit of photo-electric cell 68, said grid assumes a negative potential which results in an interruption of the current flow between the cathode I2 and anode I5. In this event, the solenoid I4, being de-energized by means of an intermediate circuit through solenoid 9I, hereinafter described, will not exert a pull on a combined armature and door I6, so that said door is held close against the bottom of the chute 41 (see also Fig. 1) by a spring 11, and a lamp released at position D will pass over said door I6 into a receptacle I8. If, on the other hand, the lamp does not have the desired luminous efllciency, the beam of light 64 will strike the screen 60 outside of the area 6| and will not reach the photoelectric cell 66, with the result that no'current will flow in the circuit of said cell 66 and the grid I0 will not have a potential. There will then.
be a flow of current between the cathode I2 and anode I5, resulting in the energization oi the solenoid I4 which pulls open the door I6 and allows the lamp to drop into a receptacle I9. The current impulse which energizes the solenoid I4 and opens the door I6 is arranged to take place just before the lamp leaves position C (Fig. l) by means of a timed contact. The said time contact mechanism is illustrated asa pair of segments 81-88 mdunted on a disc 89 on a shaft 90 which makes one complete revolution for each indexing of spider I2. The direct action of the circuit comprising the source 18 and tube II is on a solenoid 9I which is connected on one side to the said source I3 and on the other side to a. conductor 92 and contact 93, segment 81, contact 94 and conductor 95 to the anode I of tube II. In order to maintain the setting of the door 16 until a bulb has been released at position D, a parallel holding circuit'is provided for solenoid 9| which acts on an armature 96. Said circuit comprises a contact point 91, which the armature 96 engages when attracted by the'solenoid 9 I a conductor 98, contact 99, the segment 88, a contact point I08,
conductor IOI, resistance I 02 equalto the resistance of the tube II, and conductor I03 which is.
connected on the same side of the source 18 as cathode I2. The end of armature 96 is connected to the end of solenoid 9! on the same side as segment 81. Said armature 96 is normally held open by a spring I04. The solenoid I4 is actuated by a. source I05 through a conductor I06, conductor 98, armature 96 and conductor I01. 5 The operation of these circuits is as follows:
Assuming that there is a lamp in position C of unallowable eillciency, the beam of light 64 will not pass through the area 6| of screen 60 (Fig.
2) so that the circuit of the photo-electric cell 10 66 will not be energized and consequently a potential will not exist at the grid I0, thus allowing a flow of current to pass between the anode and cathode I2. This would then immediately cause the solenoid 9I to be energized by the 15 source I8 and attract the ,armature 96 to close the circuit through the source. I05 and solenoid I4 which would open the door I6. However, this action must not be allowed to take place immediately because a. lapse'of time must be allowed for the release of a lamp at position D which must slide over the said door I6 if it recorded a proper efllciency in position C. Therefore, the segment 81 is arranged at-such a position on the disc 89 that it will not close the circuit through the solehold 9| and source I3 until a suflicient amount of time has elapsed for a lamp at position D to pass over door I6. After the lapse of said time interval the segment 81 closes the said circuit through the solenoid 9!, which is then'maintained by the parallel holding circuit through the armature 96 and segment 88. The circuit through the solenoid I4, source I05 and armature 96 is also established, thus opening the door I6. The door'is held open by the action of the. hold- 86 ing circuit until the lamp under test reaches po: sition D and is released, after which time the segment 88 has been rotated until the gap I08 reaches contacts 99-I00. This, of course, breaks the said holding circuit, releasing armature 96. 40 which then releases armature 16, thus clearing the circuits, which are then reset by the segment 81 if another poor lamp is under test at C. When a lamp having an allowable efliciency is under test at c, the fact that the light beam 64 strikes the as cell 66 and sets up a potential in the grid I0 of tube II will, of course, break the circuit through the said tube II, source I3, and solenoid 9I, so that the armature 96 will not be-attracted thus breaking the circuit through solenoid I4 and causing 60 the door I6 to remain in a closed position.
What we claim as new and desire to secure by Letters Patent of the United States is: g
1. An apparatus for testing and assorting elec-- tric lamps comprising a photometer chamber, means for automatically inserting into and removing lamps from said chamber, means for measuring automatically the luminous efliciency of said lamps comprising a measuring instrument indicating lumens and a second measuring in- 80 strument indicating energy input, and means for producing a light beam which is deflected by mirrors which are in turn actuated by said measuring instruments and means for assorting said lamps comprising a screen disposed in the path of said light beam which passes said beam to or obstructs it from a photo-electric cell according to the luminous efliciency of the lamp, and means controlled by said cell for determining the path of discha'rge'of the lamp under test from the 70 apparatus.
.2. An apparatus for testing and asserting electric lamps comprising a revolving carrier for said lamps, a circuit into which a lamp is introduced for the determination of the existence or nonexistence of a broken illament or short circuit which circuit comprises a plurality oi solenoids which operate to reject detective lamps, means for measuring automatically the lumens per watt ratio of said lamps comprising a measuring instrument indicating lumens and a second measuring instrument indicating energy input and means for producing a light beam which is deflected by mirrors which are in turn actuated by said measuring instruments and means for assorting said lamps comprising a screen disposed in the path of said light beam which passes said beam to or obstructs it from a photo-electric cell according to the luminous eiiiciency of the lamps and means controlled by said cell for determiningthepath of dischargeotthelampundertest from the apparatus. I
3. An apparatus for testing and asserting electric lamps comprising a revolving carrier for said lamps, a circuit into which a lamp is introduced for the determination of the existence or non-existence of a broken filament or short circuit which circuit comprises a plurality of solenoids which operate to reject detective lamps, means cooperating with said circuit for rendering inoperative alight output measuringcircuit in case a lamp is defective, means for measuring automatically the lumens per watt ratio of said lamps compris- 5 ing a measuring instrument indicating lumens and a second measuring instrument indicating energy input and means for producing a light a beam which is deflected by mirrors-which are'in turn actuated by said measuring instruments and 10 means for asserting said lamps comprising a screendisposed in the path of said light beam which passes said beam to or obstructs it from a photo-electric cell according to the luminous eiiiciency of the lamp and means controlled by said cell for determining the path or discharge 0! the lamp under test from the apparatus. a
casraa asmm.
WALTHER-WINFRIED 140mm. go cua'r SAMSON. V
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MAX 1:. caoss mmr.
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2417488A (en) * 1942-06-13 1947-03-18 Du Pont Machine for testing and assorting resistance elements
US2430080A (en) * 1944-09-23 1947-11-04 Remington Arms Co Inc Machine for testing and assorting articles according to electrical characteristics
US2451613A (en) * 1944-08-02 1948-10-19 Remington Arms Co Inc Electrical conductivity testing machine
US2566767A (en) * 1946-05-01 1951-09-04 Motorola Inc Selecting device
US2634859A (en) * 1947-04-09 1953-04-14 Gen Motors Corp Gauging and segregating of rollers
US2640590A (en) * 1948-12-09 1953-06-02 Arthur H Mcclelland Can label sorting device
US2713943A (en) * 1951-11-09 1955-07-26 Carl L Tapper Electric cord testing device
US2972409A (en) * 1954-08-12 1961-02-21 Westinghouse Electric Corp Detecting and sorting device for high speed incandescent lamp finishing machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2417488A (en) * 1942-06-13 1947-03-18 Du Pont Machine for testing and assorting resistance elements
US2451613A (en) * 1944-08-02 1948-10-19 Remington Arms Co Inc Electrical conductivity testing machine
US2430080A (en) * 1944-09-23 1947-11-04 Remington Arms Co Inc Machine for testing and assorting articles according to electrical characteristics
US2566767A (en) * 1946-05-01 1951-09-04 Motorola Inc Selecting device
US2634859A (en) * 1947-04-09 1953-04-14 Gen Motors Corp Gauging and segregating of rollers
US2640590A (en) * 1948-12-09 1953-06-02 Arthur H Mcclelland Can label sorting device
US2713943A (en) * 1951-11-09 1955-07-26 Carl L Tapper Electric cord testing device
US2972409A (en) * 1954-08-12 1961-02-21 Westinghouse Electric Corp Detecting and sorting device for high speed incandescent lamp finishing machine

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