Патент USA US2132369код для вставки
Oct. 4, 1938. w. J. GEIGER 2,132,369 Al. LAMP MAKING APPARATUS Filed Jan.‘ 29, 1938 - pég 6/ F.- I. ~ . W i7 % 0/ b mwr arum wiw/Myn” n Re a.‘ elax. 5 Thai? GAI tnd.. 0 rbe % ,H 2,132,369 Patented Oct. 4, 1938 - UNITED STATES PATENT OFFICE ‘ 2,132,369 LAMP MAKING APPARATUS Walterv J. Geiger and Reginald J. Ayres, Cleve land Heights, Ohio, assignors to General Elec tric Company, a corporation of New York > ' ' Application‘Jam/lary 29, 1938, Serial No. 187,709 6 Claims. Our invention relates to apparatus for accu rately locatingv or prefocussing the light source of an electric ‘lamp with respect to a reference surface of the lamp such as a portiorr of an as sociated base. I ,In the manufacture of certain lamps, such as those used for projection purposes, it is highly desirable to locate the light source in a very ac curate predetermined position with respect to a portion of a base, for example. Heretofore, all such accurate positioning operations have been con?ned to apparatus comprising a single sta tionary head having a ?xed holder for the lamp base and an adjustable holder for the bulb con 15 taining the light source, an image of the light source being projected by associated optical ap paratus on a suitable screen, and the bulb holder being adjusted to bring the said image to the correct position on the said screen, after 20 which the lamp base was permanently united to the,‘ bulb. Multiple head machines were used only to locate mounts carrying the light sources in approximately the correct position with ref erence to the bulbs and bases and it was thought 25 that these machines were incapable of pro ducing the high degree of accuracy now de sired. In these machines, an optical device, or focal gauge, was mounted rigidly with reference to the center shaft and the lamp heads were 30 also mounted rigidly on a turret which rotated with the center shaft as an axis. Any warp 'ing of the turret immediately caused misalign ment of the heads. . One of ‘the objects of our invention is to pro vide a multiple head machine for very accu rately prefocussing an electric lamp by optical means. According to our invention, this object is attained by providing means for causing the optical apparatus and each of the heads onga 40 movable carrierto be accurately in predeter mined relationship when the heads are brought before the optical apparatus by movement of the carrier. Further objects and advantages of our invention will appear from the following 45 detailed description of species thereof and from ‘the drawing. In the" drawing, Fig. 1 is a perspective view showing the turret of a multiple head basing machine, only one of the heads being illustrated and also showing in operative relation thereto apparatus for accurately locating a lamp ?la ment with respect to a base in accordance with our invention; Fig. 2 is a side elevation of a portion of a head of the basing machine and means for aligning the optical apparatus there (01. 176—3) with; and Fig. 3 is a side elevation of a portion of a modi?ed head of a basing machine and modi?ed aligning means. Referring to Figs. 1 and 2 of the drawing, a lamp bulb I0 and base II which are to be 5 cemented together are carried in separate hold ers of a head l2 mounted at the periphery of the carrier or turret l3. The head I2 shown is only one of a plurality of heads usually mounted on the turret l3 and is advanced by 10 regular indexing movements of said turret l3 which carry it through a series of stations‘ at which the basing operations are preformed as disclosed in Patent 1,708,756., J. T. Fagan et al., 'Of April 9, 1929. An operator sits adjacent a 15 few of these stations and inserts the bulbs I0 and bases ll into the heads l2 as they pass before her and- a second operator sits adjacent the optical apparatus l4 located at a succeeding station and adjusts the bulb l0 until the ?la 20 ment l5 therein is properly located with refer-' ence to the base II. The remaining stations are occupied by burners and other mechanisms (not shown) used__to harden or set the cement l6 located in the base II and to perform the other 25 usual operations associated with the basing and testing of the lamp. . The bulb I0 is inserted into the base H prior to being placed in the basing machine and both are placed in the head l2 by a single movement 30 of the operator during an interval in which the ?nger I‘! at the upper end of the head is swung up and back. During this period the bulb Ill rests very lightly on the ring of cement IS in the base I l and the leading-in wires I 8 and I9 35 extend respectively upward through an aperture in the insulating plug 20 and laterally through a slit in the shell of the base II. The bulb I0 is lowermost and closes off the open end of the cup-shaped holder 21 to which a source of vac 40 uum is connected which holds the bulb ?rmly in place. The base II in this case is a type having a reference surface or engagement means consisting of a flange 22 at the end of the shell adjacent to the bulb l0 and is placed in the 45 basing machine with said ?age 22 ?tting snugly in an aperture in arm 23 and- seating against the shoulder 24 therein. The bulb l0 and‘base H are preferably ‘orientated so that the lat erally projecting leading-in wire I9 extends 50 radially outward from the turret l3. After the bulb l0 and base II have been placed in the head 12, the ?nger I1 is lowered" onto the upper end of said base ll so that it is held ?rmly in place in the, shouldered aperture 24 and is there- 55 2 7 by de?nitely located. 2,132,869 The ?nger I1 is pivoted on the pin 25 mounted in the upper end'of the - frame 26 of the head l2 and is pressed against the base II by the torsion spring 21. Following the insertion of the bulb l0 and base || into the basing head l2, said head t2 is in dexed into a station before the optical apparatus M which focuses on the screen 28 two enlarged images of the lamp ?lament l5 taken from direc 10 tions at right angles to eachother in a horizon tal plane. In this particular instance the ?la ment I5 is brought to incandescence to produce the light for projection of its image by the com pletion of an electrical circuit therethrough by 15 the pairs of jaws 29 and 30 which engage the leads l8 and. I9 respectively. These jaws 29 and 30 move down to grip the leading-in wires l8 and I9 and are of the type shown in the Fagan et a1. Pat ent 1,724,831. The optical apparatus | 4 is of the 20 type shown in said Patent 1,724,831 and consists of a housing 3| supporting two optical systems each consisting of the lenses 32 and 33, prism 34 and mirror 35 which sight the ?lament | 5 from directions'at right angles to each other in a plane 25 perpendicular to the longitudinal axis of the bulb Ill. The housing 3|, as shown, is fastened to a bracket 36 which in turn is fastened to the block 31 mounted on the center column 38 of the basing ‘machine. The center column 38 extends through 30 a sleeve 39 to which the turret I3 is attached and in this instance is the only support for the hous ing 3|. The images of the ?lament l5, as viewed by each section of the optical apparatus, appear enlarged at the sides of the frosted glass screen 35 28 which is provided with a pair of vertical hair 40 45 50 55 of the basing head I 2. The spindle 49 extends through said arm 52' and a lower arm 53' of the frame 26 and is connected by a ?exible hose 53 to a source of vacuum rotating with the turret. The vacuum reaches the cup 2| through a bore in the spindle 49, the block 46 and the slides 45 and 4l. The spring 54 located between the upper arm 52' of the frame 26 and the block 55 on the spindle 49 expands as the cup 2| and the spindle 49 are moved down. 10 We have found that in some cases the appa ratus described above is not sufficient to cause the bulbs Ill to be uniformly based with the ?lament |5 within the required limits since the rigidity of the optical apparatus l4 and the turret l3, the 15 uneven expansion and contraction of the machine parts, etc;, cause misalignment of these parts. In the apparatus shown in Figs. 1 and 2, we pro vide means for locating each head |2 laterally or circumferentially of the turret and vertically with 20 respect to the optical apparatus M to assure the required accuracy of basing. The circumferen tial alignment of the head I2 is brought about by the insertion of a plunger 56, located in slide ways in the vertical portion of a bracket 51 ex tending from the housing 3| and in permanent alignment with the optical apparatus, into the aperture 58 in the frame 26 of the basing head l2. This plunger 56 is of such width as to snugly engage the sides of the aperture 58 and is tapered 30 at the end so as to enter said aperture and turn the head I2 slightly in a. horizontal direction to the correct position when it is misaligned. In this case, the slight lateral movement of the head is provided by a slight rotational movement of the 35 lines 40740 and a horizontal hair line 4| for in- ' turret l3. Vertical clearance is provided for the dicating the center of the desired position of the plunger 56 in the aperture 58 so that it does not filament IS. affect the vertical position of the head. The The machine is constructed and adjusted so plunger 56 is moved by the lever 59 fastened to that the ?lament |5 is correctly located with ‘re the shaft 60 supported in the bracket 51. Said spect to the base II when the images thereof are lever 59 engages the pin 6| extending from said 40 centrally located about the intersections of the plunger 56 and is operated atv the proper inter hair lines 40 and 4|. An operator viewing the vals by means (not shown), which may be the screen 28 isrequired to make the proper adjust means for operating the pairs of jaws 29 and 30. ment of the bulb ID to bring the ?lament |5 in The heads l2 are aligned vertically with respect 45 this position. The operator brings about the ad to the optical apparatus H by means of the roller justments required by rotating the knurled screws 62 on the horizontal arm portion of bracket 51 42 and 43‘ and the knurled wheel 44 to shift the which engages the top horizontal surface of the position of the bulb-holding cup 2|.“ As shown, arm 23 when the heads l2 are indexed into posi the cup 2| is mounted on a slide 45 located in tion before said apparatus and either lifts the ways in the block 46 which is also provided with optical apparatus M to a given predetermined ways for the slide “which in turn is mounted relation to the head |2 or presses the head I2 by means of a bracket 48 on the spindle 49. down to a given height. In this case the very Movement of the slide 45 and block 46 moves the slight adjustment required is provided from spring bulb ID in a horizontal plane in directions at right in the parts, although the optical apparatus |4 angles to the axes of the pairs of lenses 32 and 33 could of course be made vertically adjustable on so as to shift the images of the ?lament |5 lat the column 38. The roller 62 is held in place on erally on the screen 28 and is brought about in the bracket 51 by the plate 63 attached thereto. each case by movement of the screws 42 and 43 The housing 3| for the optical apparatus l4 and respectively in or out of the block 46. Both screws the bracket 51 are extremely rigid so that there 42 and 43 engage threads in the block 46 and each is little chance of any misalignment occurring in 60 is provided with an integral collar 58 which en gages a groove 50' in each slide 45'and 4'! respec tively. A pair of springs 5| (only one being shown 65 in Fig. 2) located partly within wells in the block 46 and engaging tongues extending from the slides 45 and 41 (only tongue 5|’ on slide 45 being shown) take up all play in the adjustment means for slide 45 and block 46, i. e., the loose ?t 70 of threads and the loose ?t of the collars 56 in the grooves in said slides 45 and 41. _ The knurled wheel 44 is threaded on. the spindle 49 which causes the bulb II] to be raised and lowered as the wheel 44 is turned. The said wheel 44 rests upon 1" the bearing 52 on'the arm ‘52' of the frame 26 this portion of the apparatus. Since the roller 62 ‘engages the arm 23 which supports the base | | directly and the plunger 56 engages the frame 26 which is particularly rigid and fastened tightly 65 to the arm .23, there is little possibility of any misalignment occurring in any part of the appa ratus. » ‘ Should the carrier for the heads |2 be of an other construction such as, for instance, an end less belt or a more flexible turret, or be subjected 70 to more heating and cooling, means may also be provided, as shown in the modi?cation in Fig. 3, for locating the head I 2 in all planes. In this case the head |2 or the optical apparatus, which 75 3 2,182,869 ' , ever is the more ?exibly mounted, is positioned vertically by the roller 62 on the bracket 51'. and in all ‘other planes by the plunger 64. The bracket 51' corresponds to the bracket 51 in Figs. 1 and 2 and is fastened'rigidly to they housing 3| of the optical means. The plunger 64 is slidably cent the. path of movement of said head for in dicating when the light source of, said lamp is accurately located with respect _to a reference surface on the lamp, and means for causing said optical apparatus and said head to be accurately mounted in a hole in the bracket 51 which def-v movement of said carrier, said means comprising initely ?xes its position and is moved down by‘ lever 66 into a hole 65 in the frame 26' of the 10 basing head l2 in which it fits quite snugly. The end of plunger 64 is tapered so as to pass into the hole or aperture 65 when the head I2 is slight ly oif position. The lever 66 engages’ the plunger 64 through a pin 61 on said lever extending into 15 a groove in the upper end of said plunger and is pivoted on the ‘pin 68 supported by the bracket 51'. As in the former instance, the means (not shown) for operating the jaws 29 and 30 may, for instance, be used to operate the lever 66 and Obviously the turret III of Fig. 1 20 plunger 64. aligned in predetermined relationship when said head is brought before said optical apparatus by an arm extending substantially horizontally from said optical apparatus and arranged to engage 10 a substantially horizontal surface on said head to vertically align said head and optical apparatus. 4. .In a device of the type described, the com bination of a carrier constructed and arranged to move in a substantially horizontal plane hav 15 ing a head mounted thereon for supporting an electric lamp, optical apparatus mounted adja cent the path of movement of said head for in dicatlng when the light source of said lamp is accurately located with respect to a reference 20 on the lamp, and means for causing said " and the optical apparatus l4 are quite rigid in surface, optical apparatus and said head to be accurately a radial direction and if that type of construc aligned in predetermined relationship when said tion is used with this latter type of positioning head is brought before said optical apparatus by apparatus (Fig. 3), some freedom of movement in ' movement of said carrier, said means compris 25 25 a radial direction must be provided for either ing an arm-extending substantially horizontally the optical apparatus of the heads. This free from said optical apparatus and having a spac- _ dom may consist, for instance, of a slidable ing roller thereon arranged to engage a substan mounting forthe optical apparatus I4. tially horizontal surface on said head to vertical While we have shown and described certain -ly align said head and optical apparatus. .30 preferred species “of our invention, it will be ob 30 5. In a device of the type described, the com vious‘to those skilled in the art that various bination of a carrier constructed and arranged changes, substitutions and omissions may be to move in a substantially horizontal plane and made therein without departing from the spirit having a head mounted thereon for supporting of our invention. For instance, in ‘some cases an electric lamp, optical apparatus mounted ad 35 35 extremely accurate positioning of the ?lament jacent the path of movement of said head for‘ in may be required only in a vertical direction, i. e., dicating when the light source of said lamp is for light-center length, in which event the later accurately located with respect to a reference ally aligning means comprising plungers 56 and surface on the lamp, and means for causing said 64 may be omitted. optical apparatus and said head to be accurately What we claim as new and desire to secure by _ aligned in predetermined relationship when said 40 Letters Patent of the United States is: head is brought before said optical apparatus by 1. In a device of the type described, the com movement of said carrier, said means compris bination of a movable carrier having a head ing a plunger on~said optical apparatus con mounted thereon for supporting an electric lamp, structed and arranged to enter a closely ?tting 45 optical apparatus mounted adjacent the path of 45 movement of said head for indicating when the aperture in said head to horizontally align said and optical apparatus, and an arm extend light source of said lamp is accurately located ' head ing horizontally from said optical apparatus and with respect to a reference surface on the lamp, arranged to engage a horizontal surface on said and means for causing said optical apparatus head to vertically align said head and optical ap 50 and said head to be accurately aligned in pre determined relationship' when said head is paratus. 6. In a device of the type described, the com brought before said optical apparatus by move bination of a movable carrier having a head ment of said carrier. _ thereon comprising a ?xed holder for a lamp 2. In a device of the type described, the com base and an adjustable holder for a lamp bulb bination of a movable carrier having a head containing a light 'source,‘ optical apparatus 55 55 mounted thereon for supporting an electric lamp, mounted adjacent the path of movement of said optical apparatus mounted adjacent the path of head for indicating when the light source of said movement of said head for indicating when the lamp is accurately located with respect to said light source of said ‘lamp is accurately located. base, means for causing said optical appara, 60 with respect to a reference surface on the lamp, 60 and interlocking engagement means on said head and said head to be accurately aligned in pre determined relationship when said head is and optical apparatus for causing them to be ac curately aligned in predetermined relationship brought before said optical apparatus by move ment of said turret, and means for adjusting when said head is brought before said optical ap said bulb holder to locate the said light source 65 paratus by movement of said carrier. in a predetermined position with respect to the 65 3. In a device of the type described, the com- , bination of a carrier constructed and arranged said base. to move in a substantially horizontal plane hav WALTER J. GEIGER. ‘ ing-a head mounted thereon for supporting an 70 electric lamp, optical apparatus mounted adja-y REGINALD J. AYRES}.