US2550335A

US2550335A - Mechanism for applying luting to glass feeder orifice rings

Info

Publication number: US2550335A
Application number: US65431A
Authority: US
Inventors: Francis N Dailey
Original assignee: Emhart Manufacturing Co
Current assignee: Emhart Manufacturing Co
Priority date: 1948-12-15
Filing date: 1948-12-15
Publication date: 1951-04-24
Anticipated expiration: 1968-04-24

Description

F. N. DAILEY MECHANISM FOR APPLYING LUTING TO GLASS FEEDER ORIFICE RINGS Filed Dec. 15, 1948 April 24, 1951 nNvEN-ron FRANCIS N. BAILEY BY @Ma/w. *m

v f, wv s" ATTORNEYS @substantially uniform throughout.

y PatentedApr. 24, 1951 v MECHANISM FOR APPLYING LUTING TO Y GLASS FEEDER ORDICE RINGS Francis N. Dailey, Rockville, Conn., assignor to Emhart Manufacturing Company, a corporation of Delaware Application December 15, 1948, Serial No. 65,431

3 Claims. (Cl. 18-3.5)

. invention relates generally to the art of luting orifice rings so as to provide a glass-tight seal between suchan` orifice ring and the bottom outlet wall of a glass feeder spout when the orifice ringhas been applied to such spout.

An object of the invention is to provide a conveniently usable mechanism for applying glass Vluting quickly, accurately and effectively to orice i r1ngs.

Y It has been customary prior to the present invention to prepare a luting mixture of clay and v,water and to work or` roll this mixture by hand to the desired consistency and form and then to `apply such luting to the upper surfaceA of an f orificeV ring to be installed by finger action on theyA -p'art of the workman. This is a slow operation and moreover tends to result fin a luting ring which is far from uniform in cross-sectional shape and dimensions at different places around the top'of the orifice ring. YThis is an undesirable '-condition. If the differencesfare too great or abrupt, improper positioning of the orifice `ring may result when the orifice ring and the luting thereon are applied against the bottom of the feeder. spout bottom outlet wall or the required glass-tight seal may not be provided at all points betweenthe orifice ring and the bottom outlet Wall vThe operation of applying luting satisfactorily to an orifice ring by manual action necessarily was dependent upon the judgment, skill and careful attention of the workman.

The present invention obviates the above and V,other shortcomings and disadvantages of the prior art' practice of applying luting by hand to an orifice ring. The mechanism of the present invention for applying luting will dependably provide on the `orifice ring a luting ring which is of `'a predetermined, desirable cross-section and is Also, the luting applying mechanism of the present invention may be operated by a workman who need not be highly trained or skilled in the Work. The invention, therefore, 'eliminates trouble from unskilled or careless hand luting. y r

By greatly reduci-ng the time required to .apply luting to an orifice ring as compared with the hand operation customarily employed prior to the invention, the vtime for absorption of water from the luting by themore or less porous orifice ring is greatly reduced and the luting therefore may be in a more plastic condition when forced upin place` under Vand againstthe spout. This aids in the provisionfof. the desired seal and glass-tight joint between the orifice ring and the bottom lof the feeder spout. M

The mechanism of the present invention also permits use of a clay-water luting mixture of thinner consistency than can be worked by ha'nd and thus permits application to an orice ring of a luting of clay with less plastic component thangcan be worked by hand. This resultsin less shrinkage of the luting after it has been applied and is up to working temperature. A' Y kApplication of luting to an orifice ring by the mechanism of the present invention also has the further advantage that it permits a clay-water luting mixture to be made in advance of an orifice ring change and kept in an airtight chamber that A. is provided in such mechanism where it will not dry out appreciably until applied, even though kept'for several hours.

Other objects and advantages of the present invention hereinafter will be pointed out or will become obvious from the following description of a practical embodiment of the invention as Y shown in the accompanying drawings, in which Fig. 1 is a view mainly in side elevation, showing mechanism of the present invention in position to apply luting to the upper surface of the orifice ring, the latter being shown in vertical "section in a holder therefor which is partially broken away and in section;

rotatably support theA orifice ring for rotationl about its axis during application of luting thereto from the luting gun, only a fragmentary forward end portion of the latter being shown; and

Fig. 5 is a perspective view of the orifice ring in its holder after application of a ring of luting thereto.

An orifice ring suitable for use in a well known glass feederis indicated at l in Figs. 1, 2, 4 and 5. As best seen in Fig. 1, such orifice ring is generally of inverted frusto-conical shape and has an externally flanged upper end portion as indicated at Land a relatively reduced, or smaller substantially cylindrical lower end portion, indicated at 3, formed internally to provide a nal discharge vorifice 4 of the desired cross-sectional configuration and size. Such an orifice ring, which is conventional and may vary widely in specific shape 3 and in the relative dimensions of different portions thereof from the example shown, customarily is applied to the lower end of an outlet wall in the bottom of a refractory glass feeder spout (not shown) by pressing it firmly to place against and in alignment withsuch outlet wall after glass luting has been placed on the upper surface of the oriice ring 'for the purpose of providing a glass-tight seal and joint between the orifice ring and the feeder spout outlet wall, the orifice ring of course being retained inplaoeduring the period of its service. It is necessary ,toreplace oriiioe rings frequently in the operation of a glass feeder, as when it is desired to effect a Ichange in the size of the final discharge orice from which glass is to be fed or because the orice ring has vbeen rendered unsuitable forfurther use byreason of wear, breakage or other cause. It, therefore, is importantly7 advantageous to be 'table'to apply lutingto such an orifice ring quickly, accurately anduniforrnly.

The'orice ring hasits upper surface provided with'a shallow circular groove, indicated 'at 5, Figs. 1 and v2,concentr`ic therewith and extendingvfro'm its outer periphery for only part of the Y Any suitable or preferred grooving `or formation of lthe upper surface of such an orifice ring may 'beempoyedr The mechanis'mof thepresent invention as shown'in the drawings includes a luting'Y gun 'l comprising a V,c ylii'drical barrel'ror casingvS provided at its forward endwith a cap'9 from which' projects'a lutingdischarge'nozzle IIJ. The cap '9 may be secured detachablyV in place on the forward end of the'barrel 8 in any suitablekno'wn way, no'fmeans being shown therefor. l The nozzle I may Vbeanvintegral prolongation-of thecap 9 or may be formedjseparately and *secured thereto in anyy suitable known way. The crosssectional configuration and sizeof acolumn of I plastic luting issuing from the gunV l, as indicated by Way of yexample at II in Fig. 4, will be determined by the internal configuration and size of the dischargefen'd of the nozzle l0. Y These mayhave been selected as most suitable or lpreferred for application of luting to a 'particular orifice ring andiof course may be changedfby interchange of different nozzles on the "same Ygun barrel. Thus,` `a cross-section Vof the Vextruded column of Aplastic luting may be substantially circular as shown, trapezoidal, elliptical or anyother desired geometrical shape. n

The barrel 8 has a cap I2 on its rearward Vend. V This, like the cap 9, may be detachably Asecured in place -in any suitable known' manner. A suitable handle, which may be of a pistol-grip type as indicated at I3 in Fig." 1, Vmay be integral with the rear cap I2 or formed separately and securedtheretoor to the rear end of the gun barrel in any'suitable known way. -The gun structure end-parts which have been described so far are conventional and may vary widely in details from thoseshown.

The gun barrel 8 is of sufficient/capacityA to accommodate an adequate ,amount of 'plastic `luting in advance of` aslidablyntting piston I4 therein. The luting may be introduced intotlie" Vof arack bar 2|.

barrel at the forward end thereof after the cap 9 and nozzle i0 have been temporarily removed therefrom for this purpose or in any other suitable way. The piston I4 is operable by a rod I5 which extends slidably through the rear cap l2 and the upper portion of the handle I3 in a conventional way. The rearward'end of the rod I5 is attached to a block lI6 which has a pair of ,oppositely extending journal members or trunn'ions I'd passing through circular openings I8 in the lower portions of a pair of side plates I9, the upper ends of which are rigidly connected, as by screws 20, to the rearward end portion The members I1 may project laterally from opposite sides of the plates I9 suii'ciently 'to enable them to be grasped and manipulated or'used as handles if desired.

Rackabar 2| rides over an idle roller 22 which is rotatably mounted between a pair of

supv portingside plates

23 and 24, respectively, which have their lower portions rigidly secured,-as by conventional fastening devices 25, to vopposite sides of the upper portion of the pistol-grip handle I3. The rack bar has Yteeth 26 in its upper edge in mesh with the teeth'of 'a pinion 2 which is rotatably supported between the upperporti'ons of the'sid'ei-plates 23 and '724, as by being mounted on'a'shaft 28 havingfp'ortions journalled in suitable bearings in such side plates. YThe shaft 28 carries af'wo'rm wheel 29 on the end thereof projecting Abeyond the l side plate 23, this worm wheel being in-mesh with a worm il!)` on'a lshort vertical Ashaft-53| which is rotatably supported by a pair'of vertically spaced lugs or ears`32 land'33, lr-es1 )ectively,Fig. 3, on the upper fend Vportion of Athe side kplate '323. The upper endjportionjof the shaft 3l v carries a crank A34 having fla -la`terally projecting hand grip member 35 `which *may be conveniently grasped andturned byonefhan'dof a'work'man whojmay be grasping the 4gun handle "I3 in his other hand. By turning the crank,` the workman may impart longitudinal movement `to the rack barZI. This, of course, will cause similar movement of the'piston rod I5 and'of thepiston I4 inthe barrel" 8. Obviousiyfa forward stroke of the piston I4 inthe barrelf against aV mass of plastic luting therein will force 'luting from the nozzle Ii! in a column of a size and 'a shape in cross-section which havebeen predetermined as best suited or preferred for `the luting operation to be performed.

Relativerotati'on between'the' orificerirm t0 which' luting is being applied Yand th'e` d`isc harge end Aof the nozzle of the lluting maybe effected toaidin-layingacolumn of the luting regularly -arour'id' the "upper surface 'of the orice ring. rIfhe mechanism'pfthe illustrative embodiment of the 'invention'shown includes'imeans for supporting the orifice ringwith its axisvertical forV rotation aboutfsluch axisfa'nd for supporting the discharge'v end ofthe nozzle 'of the `lutingfgun directlyl above landy "in, 'ay pl'ede'te'rir'iin'edV desirable relation to the :groovedupper surface of the Loriiice ringjwheri' the lluting gun isbeingi'supported at its rearward end iri the handof'a `workman and is being operated'to effectI the`l desired 'discharge of luting therefrom. Suchj mechanism Y comprises a vhorizontally disposed'spider: 36, Figs.

1 and 2, having a depending axialshaftl journalled in a`V vertically ldisposed'tubular housing138 which is carried byav `base 39,all as best "seen 'in Fig,'2. The base39 may consist'ofaishort channel' member 'of metal or other suitable material, having flanges, designated gayturn'eddownward @autogas overlie and rest upon asupporting ring 40 which isv secured to the web portion 39h of the base by bolts 4l. The thus supported tubular housing depends through an opening 42 in the web portion39b of the base. Thefupper and lower ends ofthe bore of the tubular housing 38 maybe i counter-bored, as indicated at 43 and 4,4, respectively, to.accommodate,y upper and lower antif friction thrustbearing units45 and 46, respectively, and the extreme lower end portion of the shaft 31 may be screw threaded and a nut 41 ,may be Screwed thereon against the lower b earing unit 46. This arrangement maintains the `@parts just described in assembled relation while A permitting convenient and easy disassembly thereof when desired. Such arrangement also i assures relatively free rotation of the spider 36 1 around the axis of the spider shaft 31;..

y The spider 36 has three projecting arms 36a. The, outer endportions of these arms carry short upstanding ring supportingand centering members 48. These may be upstanding shanks of headed studs 49 secured to the spider arms, such Shanks being partially cut-away vertically at their inner sides from their upper ends for part of their height to provide upwardly facing supvportingjshoulders 50 and inwardly turned centering faces l on the stud shanks. In the example shown, these are appropriately located to support and center the oriiice ring indirectly by directly supporting and centering a substantially dish-shaped holder 52 for the orice ring. The holder 52 is that in which the orifice ring is held when applied to a feeder spout bottom outlet and the arrangement permits the oritce ring to remain therein for the luting operation and continuously thereafter for application of the orifice ring tothe feeder spout andwhile it is in place on the latter. lThe holder 52 comprises a cylindrical side Wall 53 and a flatbottom 54. The bottom 54 of the holder 52 has a ,central opening 55which provides a seat for the lower end portion 3 of the orifice ring .i when the latter has been lowered into the holder until a downwardly facing shoulder 56 on the body of the orifice ring rests upon the holder bottom 54 around the opening 55. AAt this time, the iianged upper end portion of the orifice ring may rest upon a plurality of angu- V larly spaced inwardly extending radial webs 51 which are provided in the holder 52. The structural arrangement assures iirm support of the orifice ring in the holder in concentric relation thereto. In actual use, the available space in the holder between the orifice ring and the holder side wall and bottom would be iilled with granular insulation (not shown). When the holder has been placed on the spider 36 in supported and centered relation thereon, the orifice ring in the holder will be axially aligned with the spider supporting shaft 31 for rotation with the spider about the axis of such shaft. Obviously, any other suitable orifice ring holder may be employed and if service conditionspermit, suitable provision may be made to support and center the orifice ring directly on the spider.

A standard 58 is mounted on the base 38 at one side of the latter so as to be adjustable vertically and also horizontally. along the basewithin limits. Thisis accomplishedin vthe illustrative mechanism shown .by fastening a horizontal bar 59 to one of the supporting flanges 39a of the base by means of cap screws 60 extendingthrough horizontal slots 6l and engaged with threaded openings 62 in the flange 38a of the base. This l,permits longitudinal adjustment of the bar v59 relative to the base when the screws 60 have been loosened. The standard is provided with verti- `cal slots 63 in its lower portion and cap screws 64 extend therethrough into threaded engagement with suitable openings 65 in the horizontal bar 59, thereby providing for limited vertical adjustment of the standard relative to its support.

The upper end portion of the standard 58 carries a laterally extending bracket arm 66,`Figs.

l', 2 and 4. An eyebolt 61 has a shank 68, Fig. 2, extendingloosely through an opening 6,9 in the bracket arm 66 so that `a shouldered innerend portion 15 of the eyebolt shank bears against the inner side face of the bracket arm 66, i. e., theside Y thereof that faces toward the orifice ring on the bolt about its axis while Apermitting such turning or swiveling movement when the rearward end of the luting gun is raised or lowered Iby a workman while the forward end of the gun rests :in

the eyebolt. u

The luting gun may have its forward cap portion suitably tapered as indicated at 9a, Figs. 1, 2 and 4, to fit snugly in the eyebolt when the nozzle protrudes therefrom. It will be obvious that with this structural arrangement, the rearward end of the luting gun may be raised or lowered by the hand of a workman to position the discharge end of the nozzle at the desired distance above the upper surface of the orifice ring. The nozzle I0 of the luting gun may have its discharge end undercut and bevelled as indicated at 10a so as to be more nearly parallel to the' plane of the upper surface of the orifice ring than the axis of such nozzle when the discharge end of the nozzle has been brought to a suitable discharge position closely above the orifice ring as, for example, to the position shown in Figs'. 1, 2 and 4. This bevelling of the discharge end of the nozzle will assure discharge onto the upper surface of the orifice ring of a full section column of plastic luting in a direction having a downward component and also a forward component in a direction generally tangential of the bead 6 at the inner periphery of the orifice ring. I have found that relative rotation between the orifice ring and the discharge nozzle of the luting gun will be effected at the rate of extrusion of luting from the nozzle of the luting gun assembly by the torque imparted to the orifice ring by and through the column of luting discharged thereon. The luting gun may be operated by a workman who maintains the rearward end thereof in an appropriate position by grasping the handle I3 in one hand while the crank 34 is being turned by the other hand to effect forward movement of the piston i4 in the barrel of the luting gun to force luting therefrom downwardly and forwardly onto'the upper surface of the orifice ring. The action is illustrated by Fig. 4 and the result by Fig. 5. Fig. 4 shows the condition at a izpeopss fring has "been rotated by ythe y applied column vof luting- -throug'hthemajorv part of a complete revolution, When a-comp1'eterevlution of theoriiice ring Thas been cheated, theluting Wllhave been applied in a 'complete circle, the discharged'col- 'umn then being Sheared off close to the discharge endfofltheadis'charge nozzle Yso as to'form `a butt joint'with the initial end of the applied luting columnas indicated'at--13, in Fig. 5.

lIt -will be observed that the ring of luting relatively smooth, regularsurfacefand is approximately uniform in thickness and contour throughout. "This rgreatly Afacilitates v'production Vvof adependable-glassftight seal of vuniform clay luting between the vori'ee 'ring and the bottom "of the feeder spout outlet wall when the ori'ce' ring with the luting thereon has Vbeen raised and fpressed vto place against'the latter in a customary manner. HThe operation would be the vsam'edn 'fthe case of-an orificeringfhaving a plurality'of those skilled inthe art and I, therefore, do not lwish to'be limited to the-details of such illustrative embodiment.

I claim: LMechanism for applyinga lutingmi'xture fof-clay 'and-Waterorthelike to a glass feeder orifice-ring 'comprising a rotor mounted to 'turn freely on a vertical-axis'and onwhich. such'an 'orifice -ring Jmay Abe positioned 'with its axis kaligned with the Yaxis of `'rotation 'of the rotor andor "turning Ymovementvvith said rotor, Vand jmeans to discharge such a luting mixture in a plastic column'onto the 'upper `surface of the oricering on 'said rotorin a direction such :as 'impart rotation 'to the "orice ring and` rotor'loy "thecontactofthe discharged column of luting Hwith the orceringso as`.to lay the discharged lutingmixture Von the orice'ring progressively "around the axis thereof.

VMechanism for applying plasticiluting to )cal axis'and adapted to supportand.positionan orifice ring thereon `with its faxis ialigned'with thev axis o'f rotation "off the rotor, anuprightffsup- VVport 'secured4 to the base and extending above the levelf'fthe rotor 'at one side thereof "and :adjac'enttheretm an eyebolt mounted on lthe'upper end jof said upright support inoverlyinig,r relaltion Vto the upper 'surface fof theforice ring usupported onthe rotor, and a `luting gun having a nozzle end Ip'orton adapted' to proj'ect 'through and'be supported bys'aid eyebolt'with-the fdischarge end of thenoz'z'le in operative position `in relation "to the upper surface of 'the oriiice ring when vsaid 'gun iis lsupported manually 'at the 'fend thereof opposite the nozzlefsaid eyebolt being Y"adapted t'o be turned about itsffaxis while in supporting relation to-'the nozzle end f the vd"gun to 'raise or Ylower the discharge fend ofl'the nozzle relative to the 'orifice ring.

V3. Mechanisml'forfapplying plastic luti'ng-to a vglassvfe'eder 'orice ring or-.th'elike comprising fa lutingg'u'n vcomprising a barrel, a nozzle on`one end -of -thebarreL a rpistol grip l'handle on the opposite end ofthe barrel, va pistonfslidable in the barrel, apiston rod projecting from'the secf ond'end ofthebar'reLa rack bar; means carried by said handle for slidably '-supportingsadrack Ybar `for longitudinal reciprocatory movements in parallel relation tothe `piston rod, m'ean'sf'conneeting the ends of the piston rod `and. the rack Ibar remote from Vthe barrelto lcause them to move in'unison on longitudinalmove'ment of either, 'and driving means for AtheV rack-bar comprising a crank operativelyf'mountedon the -handie, f and gearingV operatively connecting the crank and therack' bar.

FRANCIS- N.Y DAILEY.

V`REFERENCES CITED The following references are of "record in the vfile 'of this patent:

UNITED `STATEQ PATENTS Number Name Date 18611802 v-Brov`V-n July 30, 1907 '997.172 Zimmerman Y 'July '4, 1911 2,203,572 Johnson fJune 4, 1940 l2,270,075 Y'Miller Jan. 13, 1942 2,324,410 Miller July 13, 1943