Патент USA US2108217код для вставки
Feb. 15, 193s. L, C. S'TRINGER 2,108,217 TUBE CUTTÍNG DEVICE Filed May 5, 1957 3 Sheets-Sheet l Á?iorneys i Feb» 15, 1938. 1_. ci STRINGER 2,108,217 TUBE CUTTING DEVICE Filed May 5, 1937 5 sheets-sheet 2 Áí?orneys Feb. -15, 1938. L. C. STRINGER 2,108,217 TUBE CUTTING DEVICE ` Filed May 5, 1957 3 Sheets-Sheet 3 Inventor . .4 Hornet/.s Patented Feb. 15, 1938 UNITE; 2,108,217 STTE-S PNT GFFECE 2,108,217 TUBE CUTTING DEVICE Louis C. Stringer, Chicago, Ill., assignor to Elec tronics Supply Corp., a corporation of Dela Application May 5, i937, Serial No. 140,957 10 Claims. The present invention relates to what is be lieved to be a structurally new and improved device for scoring glass tubes in general, the speciñc concept as herein illustrated and par 5 ticularly described having to do with an ingen ious method and means to facilitate accurate and reliable severance of incandescent bulb por tions. . Looking toward the promotion of a better 10 understanding of the nature and type of this novel bench-style manually controlled machine, it seems to be in keeping with good vpolicy to direct attention to the specific line of endeavor in which it is particularly adapted for expedient> _15 use, To this end it is to be pointed out that certain methods of reclaiming electric lamps and bulbs have been brought into vogue to renovate, repair, and adequately recondition so-called burnt-out lamps. Persons skilled in the art to which the inven 20 tio-n relates are familiar with the fact that when the filament of an incandescent lamp is broken or otherwise impaired, or the effectiveness of gas 2 is destroyed, the lamp is useless unless the iila ment is properly reconditioned and replaced, this calling for a complete rebuilding of said lamp. I have discovered the need for the perfection of a complete and systematic method of rejuve nating and reclaiming incandescent bulbs, and inasmuch as one of the procedural steps involved therein necessitates severance of the neck from the bulbous shell to free the filament-equipped mounting, a machine or tool adequate to accom plish this result properly is in demand. Owing 35 to the fragile nature of incandescent bulbs or envelopes, it has been found that the device needed for the purpose intended must be of a manually regulated and hand controlled type, and thus, the purpose of the present invention is to 40 perfect this phase of the general reclamation method through the instrumentality of a struc ture aptly designed to do the job well. The procedural aspects and accompanying fea tures and advantages of the invention will be 45 come more readily evident from the succeeding detailed description and the accompanying illus trative drawings disclosing the preferred- em bodiment of the invention. (Cl. 33-21) Figure 2 is a top plan View of the arrangement depicted in Figure l. Figure 3 is an enlarged fragmentary view, part ly in section, and partly in elevation, said View being on the plane of the line 3--3 of Figure 2. 5 Figure 4 is a detail section on the line á-li of Figure 3. Figure 5 is what may be called a front end elevation of the oscillatory cutter head with the cover plate removed. 10 Figure 6 is a horizontal section on the line 6_6 of Figure 5. Figure 7 is what may be called an end eleva tion of the adapter abutment. Figure 8 is a perspective View of one of the spring pressed cutter or diamond point mounts. Figure 9 is a cross-section on the line 9-9 of Figure. 3. In the drawings, as shown in Figures 1 and 2, the base or supporting frame i@ comp-rises a suitable bench-type base plate il having stand ards or uprights i2 provided at their upper ends with bearings to accommodate the oscillatory horizontal shaft or arbor i3. This is longitudi nally shiftable in the bearings parallel to the by the set screws M. On the outer end of the arbor is the adapter abutment or iitting to accommodate the incandescent bulb i5 being repaired. The adapter ñxture is denoted con- , veniently by the numeral Hi. It comprises a detachable cup ll’ having a cushion i8 fitted therein. The cup is detachably mounted on the arbor in any suitable fashion, as indicated at I9. In practice several different sizes of adapter ñx tures i6 will be utilized to accommodate Varying types of conventional glass bulbs, or tubes, as the case may be. Incidentally, it may be men tioned that the bulb` i5 embodies the conven tional bulbous body or shell 2u having a neck 2l formed with the customary sealed-in tip car rying the ñlament-equipped mount (not shown). During the course of repair, it becomes neces sary, in accordance with my prescribed method, to sever the neck 2l from the body in order that the mount may be removed for recondi tioning and repair. This being a precision job, it is necessary to form the score line 212 at a pre determined point forming the juncture of the r, In the drawings: neck and shell or body 2li. Figure l is a side elevational view of the com factorily accomplished in the present machine through the instrumentality oi the cutter plete assemblage in readiness to accommodate structed in accordance with the principles of the 55 inventive concept. _ plate H and held in predetermined set positions "0 the bulb for severance or cutting, this being con 5 This may be satis- 5U equipped mandrel unit mounted on the arbor I3. The aforementioned unit comprises a mandrel proper in the form of a sleeve 23, this being slìd- 55 2,108,217 2 ably and rotatably mounted on the arbor. The sleeve forms a convenient hand grip and it is provided at a predetermined point with a re silient latch 24 having a V-shaped detent 25 releasably engageable with threads 26, whereby to provide a sort of a rack and pawl locking connection between the mandrel and arbor. The use of the annular threads 25 makes'it possible to readily slide the mandrel to the desired posi tion on the arbor, lock it, and thereafter freely oscillate it or ,turn it for the cutting operation. On the end of the sleeve is a cross-head 21 pro vided with a pair of spaced parallel supporting rods 28 carrying the cutter head 29. The pre ferred type of head comprises a disk or plate 30 having diametrically opposite grooves formed therein, as seen to advantage in Figure 5. The disk is centrally apertured, as at 3l, to admit the entrance of the neck of the bulb, and in ef 2.0 fect becomes an oscillatory annulus. Mounted in the grooves are spring pressed blocks or mounts S2 having the scoring point 33 preferably dia mond-point. The blocks are pressed simulta neously inwardly under the action of the spring 33 held in place by retention cleats 34. These spring pressed cutter elements are shielded and held in place by a detachable face or cover plate 35, as illustrated in Figures 3 and 6. This complete cutter head, as a unit, is remov 30 ably supported on the outer ends of the rods 28 by quick removable set screws 3E of the type seen in Figure 6. Incidentally, to accommodate dif ferent types of bulbs, different sized cutter heads must be employed. The cutter heads are stand 35 ardized to ñt on the rods 2d. Moreover, each cutter head is the same in construction, and the only difference is in the accommodation aper ture at the center to take care of different sized bulb necks. I next call attention to the numerals 31 which 40 designate latches for actuating trips for the spring pressed cutter elements. The outer` ends of the latches extend through slots 38 in the disk 38 and engage the blocks 32, as seen in Figure 3. 45 These latches are pivotally mounted, as at 39, on supporting lugs 49, the latches having operat ing handles d! located on diametrically opposite sides of the mandrel or sleeve 23. The handles 4| terminate in spaced relation from the spring 50 pawl 25 so as not to interfere with the action thereof. With this arrangement it is obvious that the position of the cutter head 29 can be regulated and set with relation to the adapter fixture l5. 55 This determines the position of the score line 22 on the neck of the bulb, as is obvious. In pre cision work of this character, a fine adjustment is required. . In practice, the position of the cutter head 60 is set or regulated by the means 25 and 26. This is accomplished by bodily sliding the man The methodical phase of the inventive con cept resides, it is believed, in a method consisting in holding the bulb in one hand, and fitting it into a hand rotated cutting tool, whereby upon holding the bulb stationary and oscillating or turning'the tool, the neck may be properly scored and thereafter severed from the body in a pre scribed and safe manner. The chief novelty, however, resides, it is believed, in the particular construction of the machine or device for ac 10 complishing this job. It is thought that the description taken in con nection with the drawings will enable a clear understanding of the invention to be had. There fore, a more lengthy description is thought un necessary. ' ' While the preferred embodiment of the inven tion has been shown and described, it is to be understood that minor changes coming within the ñeld of invention claimed may be resorted to 20 if desired. I claim: 1. A fragile tube cutting device of the class de scribed comprising a support, an arbor on said support, said arbor being provided with an adapt- ‘ er fixture against which one end of a bulb is held, a mandrel mounted for oscillation and sliding on said arbor, said mandrel including an annular cutter head adjustable toward and from said adapter fixture. , 2. In a device of the class described, a rela tively ñxed arbor having a cushioned adapted de vice to accommodate one end of an incandescent or equivalent bulb, a rotary cutter-equipped head adjustable toward and from said fixture and adapted to surround the neck of the bulb, and a mandrel on which said head is mounted, said mandrel in turn being mounted on said arbor. 3. A glass cutting device of the class described comprising a relatively stationary arbor having 40 an adapted member on one end, a mandrel ro tatably and slidably mounted on said arbor, co acting means between the mandrel and arbor to limit the sliding movement of the mandrel, a cutter head supported from said mandrel, said 45 cutter head including spring pressed cutter ele ments, and remote control actuating means for said cutter elements coacting with the cutter elements and mounted on said mandrel. 4. In a structure of the class described, an 50 abutment against which one end of a bulb may be held, a cutter head associated with said abut ment and adjustable toward and from it, said cutter head being centrally apertured to em brace the neck of the bulb, and manually regu lated diametrically opposed spring pressed scor ing elements mounted in said head for scoring the neck. 5. In a device of the class described, a base in cluding standards, an arbor slidably mounted in said standards, a detachable abutment Viixture dre] and its cutter head as a unit on the arbor on said arbor, said arbor being provided with l 3. When the machine is set, the bulb 2B is held in one hand and the neck is inserted through the retention elements, a sleeve slidably and rotat ably mounted on said arbor and including a pawl cooperable with said retention elements, an an nular cutter head, means supporting said cutter head on said sleeve, and latches pivotally mount ed on said sleeve and engageable with cutter 65 cutting aperture in the head, the neck being brought to bear against the cushioning block I8 in the adapter cup il. This is brought out in Figure 3. By holding the bulb in the left hand, for instance, and catching hold of the sleeve 23 with the right hand, an oscillatory twist back and forth, generally once around, will score the bulb, after which it can be bodily removed, a1 lowing the neck 2l to be detached to permit ac cess to be had for withdrawing the mount (not 75 shown). elements. 6. In a structure of the class described, a support including a base having standards ris ing therefrom, a shaft mounted in said stand ards, said shaft being provided on one end with a removable cushion-equipped abutment cup, a sleeve mounted on said shaft, coacting means 75 3 2,108,217 between the sleeve and shaft to permit the sleeve to rotate and to permit it to be slidably ad justed and held in a predetermined adjusted position, and a cutter head iixedly mounted on said sleeve. 7. A glass tube scoring device of the class de 9. In a structural assemblage of the class de scribed, a rotary bulb neck embracing and scor scribed comprising relatively ñxed adapter and abutment means against which the sealed-ín ing annulus designed to permit the 4neck of the bulb to be held, by hand, in operative relation end of a bulb may be braced and held, and 10 complemental scoring means in alignment with and being adapted to encircle the Work to cir cumscribe a breakable score line around the Work at a predetermined distance from said abutment. « ship with the scoring means, and a relatively ñxed stop in workable alignment with the axis 10 and adjustable toward and from said first-named of said annulus to allow one end of the bulb to means. be pressed thereagaínst. 8. A scoring device for glass tube severance of the class described comprising a relatively 15 fixed abutment against Which one end of the Work is adapted to be held by hand, and a com plemental oscillatory scoring unit of a hand ro tated type, said scoring unit being located in spaced longitudinal alignment with the abutment Ul 10. A bulb scoring device embodying a scor ing unit centrally apertured to permit the neck o-f a bulb to be'inserted and projected through 15 and beyond the aperture, and scoring means car ried by said unit and cooperable with the aper ture to surround said neck. LQUIS C. S'I‘RINQER.