Патент USA US2390776код для вставки
Dec. l1, 1945. 2,390,776 D. R. CLEMONS METHOD OF MOUNTING ELECTRICAL CONDENSERS 2 Sheets-Sheet l Original Filed Oct. 24, 1941 2 ‘Y IVENTOR. 5y A TTG/MMV Dec. l1, 1945.` 2,390,776 D. R. cLEMoNs METHOD OF MOUNTING ELECTRICAL CONDENSERS Original Filed Oct. 24, 1941 2 Sheets-Sheet 2 INVENTOR. ß. A’. ¿'¿EMo/vs @2y/„7 ß. @74; 2,390,716 Patented Dec.- 1l, 1945 UNITED STATES PATENT OFFICE METHOD 0F MOUNTING ELECTRICAL v CoNDENsERs ‘l Dale R. Clemons, Riverside, lll., assignor to West ern Electric Company, Incorporated, New York, N. Y., a corporation of New York ' Original application October 24, 1941, Serial No. 416,287. Divided and this application March 12, 1943, Serial No. 478,893 2 Claims. (Cl. 29-25.42) ing block by the method of the present invention; This invention relates to a method yof mounting i Fig. 7 is a perspective view of an electrical con- f electrical condensers and the like, and is a divi sion of my copend ng application, Serial No. denser that has been provided with a cast mount 416,287, filed Octobe .24, 1941. ing block by the method of the invention; and ‘ Electrical condensers, particularly those of the type which are sealed in metal containers, are sometimes attached to flat supporting members or mounting plates by means of mounting studs which are anchored in the sealedy covers of the Fig. 8 shows several such condensers attached - to a mounting plate. Referring now to the drawings, there is illus trated in Fig. 6 an electrical condenser I0 of a well known type employed in telephone communi ccndenser'containers and project perpendicularly 10 cation systems.` The illustrated condenser com therefrom. It is essential, in some instances, that such condensers be accurately aligned with re , prises an outer metal casing or container Il hav ing a sealed-'on cover I2 to which are soldered the two terminal posts I3--I3. The cover is pro spect to the supporting member or mounting plate vided with the usual filling hole I5 which is sealed to present a pleasing appearance 'and/or to permit the mounting of a plurality of condensers on close 15 by a globule of solder I6. A mounting stud I1 is anchored to the cover for use in attaching the centers. However, the presence of the usual sol condenser to a supporting panel or mounting plate dered terminal posts and soldered filling holes on I8, as shown in Fig. 8. , ` the condenser covers usually present irregular In accordance with a feature of the present surfaces surrounding the mounting studs which, heretofore, has rendered it difilcult and costly to 20 invention, a flat surfaced embossment or mount ing block I9 (Fig. 7) is molded or cast directly properly align` such-condensers with respectl to on the cover, adjacent to and surrounding the the mounting plates. ' An object ofthe present invention is to provide an improved vmethod of mounting electrical con densers andthe like, whereby the above men tioned objections are eliminated. ' f' In accordance'with the above object, one em mounting stud I1. This mounting block is prei . erably composed of a lead-antimony-tin alloy, but other alloys, as well as various non-metallic mold ing materials, may be used. It is necessary, only, that the mounting block be firmly attached to the condenser cover and that it have a flat outer sur" face 20 for engaging and cooperating with the vision of a method of mounting an electrical con denser on a flat surfaced support, in which a flat 30 mounting plate to maintain the condenser- sub bodiment of the invention contemplates the Ápro surfaced mounting block or embossment is molded stantially perpendicular to the mounting plate, -as or cast directly on the condenser, after which the shown in Fig. 8. condenser is attached to the `support with the . ilat`surface of the embossment contacting and flush with the flat surface of the support. A more complete undertsanding of the method of the present invention may be had from the following detaileddescriptionwhen read in con junction With the accompanying drawings, in which - . I ' A preferred form of molding fixture for casting the molding block on the condenser cover is illus trated in Figs. 1 to 5, inclusive, of the drawings.It comprises a mold block 22 which is removably attached by screws 23 to the base of an L-shaped frame 24, the latter being attached by the same screws to a supporting plate 25. . This plate has 40 four downwardly turned flanges 26, 26 which serve -as supporting legs for the fixture when Fig. l is a vertical sectional view of a molding fixturel by means of which the method may be practiced, the section being taken on line I-I placed on a table or work bench.' ofFig. 3: in an inverted position,` as shown in broken lines , m Fig. 2 is a side elevational view of the ñxture; The condenser is placed in the molding fixture 45 in Fig. 1, and it will be noted that the mold block- ber, the latter being shown in the open position; 22 of the fixture is formed on its upper surface with a depression 28 which conforms to and ac commodates the cover of the condenser. Within y Fig. 5 is a front elevational view showing the this depression and centered with respect thereto Fig. 3 is a plan view thereof; Fig. 4 is a plan view of the mold and gate mem manner in which the fixture is held in a tilted po 50 is a mold cavity 30 (Figs. 1 and 4) which is shaped sition upon an electromagnetically vibrated plate to conform to the shape of the embossment or during the pouring of the molten metal into the mounting block to be cast on the condenser cover, mold cavity; _ and the bottom of the mold cavity is flat so as to Fig. 6 is a perspective view of an electrical con form a fiat mounting surface on the cast mount denser adapted to be provided with a cast mount, 55 ing block. aecomo Mold block 22 and supporting frame 24 are provided with aligned close fitting apertures 32 and 33, respectively, for accomodating the mounting stud -l1 oi' the condenser. Notches 3l, 3l (Figs. 3 and 4) are provided in the mold block In the operation oi the above described mold-_ ing ?xture, a condenser is placed therein in an ~inverted p0sition, as shown in broken lines in Fig. l, with` the mounting stud I1 inserted in the and frame for accommodating the terminal posts i3 of the condenser and two apertures 3l--35 are provided in the basex plate 2l for receiving the apertures 32 and 33 and with the body of the condenser lying in the channel B3 of gauge block 5| . The condenser is thus positioned perpendic ular to the ilat bottom surface of the mold cavity condenser terminals. 30. With the condenser so positioned, the gate ' To the right ot the mold cavity 30, a tapered 10 40 is closed and the'iixture is held in a tilted posi~ depression or filling trough 31 is provided in the « tion upon- a vibratory plate 10, as shown in Fig. 5. By means. of an electromagnet 12, the plate is upper surface of the mold block and a slot 33 in vibrated while molten metal is poured into the the adjoining wall of the mold cavity connectsl the cavity with the trough. ' mold cavity through the inlet opening I1 by way » of the illling trough 31. The iixture is vibrated A gate member 40 is hinged or pivoted on the by the vibrating plate, thus forcing the molten protruding ends of a' iixed horizontal pin 4i metal into all corners of the mold cavity. mounted in the mold block. This gate member is A suilicient amount of molten metal is poured provided with a suitable handle 42 by means of into the mold to completely illl the mold cavity which it may be opened and closed. 'I'he gate is formed with a tapered groove 84 which termi 20 and then rise in the ñlling trough 31 to the level indicated at 13 in Fig. 5. After the metal in the ' nates at its smaller end in a slotted projection mold has been allowed to “set,” the iixture is 45. When the gate is closed, as shown in Figs. l, removed from the vibrating plate, the gate “i is ' 2 and 3, the slotted projection I! cooperates with the slotted wall of the mold cavity to provide an ' opened, and the condenser with -the block of metal cast thereon is ejected from the ilxture. The inlet opening I1 (Fig. 2) for the mold cavity, and ejection is accomplished by manually lifting the it will be obvious that the tapered groove 4l of the gage is adapted to cooperate with the tapered ejector bar 80 to lift the condenser and cast block depression 31 in the mold block to guide and out of the mold while the outer end of ejector ' - lever 68 is pressed downwardly so that the inner direct the molten metal toward the inlet opening 80 end thereof is projected upwardly to eject from 61. ` the filling trough 31 the protruding burr formed To theupper end of the upstanding portion of on the cast block by the overilow of metal into the frame 24, there is attached a suitable vhandle 50 filling trough. This protruding burr is then re and a channeled guide or gauge block 5|. The moved by clipping it oil’ with close cutting pliers, gauge block is provided on opposite sides thereof thus leaving attached to the condenser cover a with two guide channels 53 and 5l for accommo- dating the body portion of the condenser and cast mounting block I9 (Fig. '1) having smooth these guide channels are of different widths so side edges and a flat surface 2li for engaging and that by simply reversing the gauge block, the fixture may be adjusted to handle condensers of two diiïerent sizes. the condenser perpendicular with respect to the mounting plate, as -shown in Fig. 8. cooperating with the mounting plate to maintain l The frame 2t is of channel cross section and an It will be obvious that the invention is not ejecting bar ß@ is vertically slidable therein be hind iixed retaining pins äI-SL as b'est shown in Fig. 1. This ejecting bar has a horizontal out wardly extending handle portion 33 at its upper end and a horizontal inwardly extending arm 64 limited to the speciñc embodiment thereof- herein illustrated and described, but is capable of other applications within the scope of the appended claims. What is claimed is: at its lower end. When the ejecting bar is man 1. A method of making an electrical device ually lifted by means of the handle portion 63, having a ñat mounting surface thereon, which the arm Si! is adapted to press upwardly on'the stud i1 of the condenser to lift the condenser out comprises placing an electrical unit in a con of the mold. ‘ v An auxiliary ejector in the form of a lever 36 is provided for cooperating with ejecting bar 60 tainer, securing a closure member to the con tainer and molding directly on said closure mem ber a mounting block having a ilat molded sur-4 face. ' "`- to remove the condenser and the attached cast 2. A method of making an electrical devic mounting block from Vthe mold. 'I'his ejector having a ñat mounting surface thereon, which lever is pivoted on the horizontal pin Il and oper ates in .a slot â'l in the mold block. A coil spring 63 is arranged to press upwardly against the outer end of the lever so that the inner end there comprises placing an electrical unit in a con' tainer having substantially parallelv side walls and an open end, securing a, closure member to said open end, and molding directly on said clo of is normally held in its retracted position within 60 sure member a mounting block having a iiat moulded mounting surface substantially perpen the slot 61. When in this position, the upper dicular to said side walls. surface of the lever is ilush with the bottom of the iiiling trough 31 of the mold block. DALE R. CLEMONS.