US2670088A - Cupola and charging apparatus therefor - Google Patents

Description

Feb. 23, 1954 J RJCHARDSON 2,670,088

CUPOLA AND CHARGING APPARATUS THEREFOR Filed June 30, 1950 3 Sheets-Sheet l IN VEN TOR.

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Feb. 23, 1954 N RlCHARDSON 2,670,088

CUPOLA AND CHARGING APPARATUS THEREFOR Filed June 30, 1950 3 Sheets-Sheet 2 Feb. 23, 1954 J. N. RICHARDSON CUPOLA AND CHARGING APPARATUS THEREFOR 5 Sheets-Sheet 5 Filed June 50. 1950 INVENTOR.

Patented Feb. 23, 1954 CUPOLAuAND CHARGING APPARATUS THEREFOR J ohn N. Richardson, Port Washington, Wis; as-

zsig nor to Modern Equipment .Gompany, iRort "Washington, Wis., .a corporationof Wisconsin Application June 3,0, 1950, Serial No.'171,'330

"This invention relates 'to improvements in eupolas-and charging apparatus therefor.

In the development of more efficiently operating cupolas; ithas beenfound desirable to utilize the heat -frorn-the'hot exhaust gases to pieheat the fresh ainvvhichis blown into the bottom of the-cupola. This heat is customarily discharged into the atmosphere and Wasted. Toaccomplish thisutil-ization, it is necessary-to substantially seal thecupolaand 'to withdraw-the hot gases from the-upper portion 'of-the cupcia through suitable ducts which direct said hot gases into economizers. The incoming fresh air is also-directed into theeconofnizersand while passing there'through is preheated by the absorption of heat from the-hot exhaust gases. This regeneration "of hot gases which would otherwise he wasted, effects awery-marked saving of heat,-and also brings about increased'eflieiency in them)- eration of thecupola.

It is apparent "that in order to operate the cupo'la continuously under-substantially sealed conditions, the charging must he done in amannor-so as notto break the seal. Most of the sealed'cupolas operate underpressures other than atmospheric, and breaking of the -seal results in a disruption of the normal flow of gases as 'well as in fluctuations the pressures within the 'cu-pola. Any such "conditions must be avoided for proper cupola operation.

With the above in mind, it is the generalobj-eot of the present invention t-o-provide an improved cupola constructed to permit charging thereof while at the same time maintaining the integrity of its seal.

A further object of the invention is-to provide an improved cupola construction of the. class described, wherein -a-charging hopper issmoun-ted on top of the cupola and has an open bottom in communication with the interior-oi thecupola, there being a bottom bell in said hopper "for sealing-offthecommunication between said hopperand the cupola, and there being normally opencover doors for the top of said hopper; said cover doors beingmovable .to a iciosed. position :on said homer, and said beil being movable downwardly during a eupola charging operation to permit a charge to dropinto the cupola' from-the "hopper, while said cover doors maintain the cup oia in sealed. condition.

:A further :object of the invention isrto provide an improved cupolaconstruction of the :class .described-wherein; the hopper bell zandztheitonwall of the icupola are water .cooledrsaidbell having an elongated vertical-1y 4 extending nstem r'ior enclosing theuwater connecticnssthereto.

A further object of the invention is to provide A further object ofdzhe invention is to provide an improved charging bucket of the two I section type which insures 'propendistrihution of :a charge the charging hopper.

n turther-obiect of --the=invention towprovide a charging buchet having=a holiowcentra1 pantition -for accommodating the upwardly-prod ectstem of a charging ihopperbell vvhen ithe is positioned over-said charging hopper.

A further object of the .invention is' to provide improved cupola-oonstruction and charging apparatus therefor which isistrong and durable, efficient in ope-ration and otherwisevwell-adapted for the purposes described.

With the above and other objects ins-view, the invention consistsof the improved cupolaaconstruction and i charging apparatus therefor, and all of its parts and combinations, nae-"set forthiin the claimsand all equivalents thereof.

In the drawing accompanying and iormingia part of this specification, wherein'is shownuone complete embodiment :of the preferred termini the invention, andwwherein like reference .1charactersindicate the same-parts in all 10f" themi'ews:

Fig. 1 is a view/partly in verticalzsection-rand partly in side elevationof the improved ucupbla and the charging apparatus therefor;

2 isia aside .elevational-view-oi theimpnoned :cupolaand charging. bucket taken approximately along thev line; 2--.2 ,;of Fig. ,1, parts: heinahmhen away and shonmiinsection; and

is [a plan view of v:theqin'rprove l eupola takenapproximately, along the; 1ine 3- 3--;of; .Eig.,;2. Referring to Fig. ;,1, the numeral-:5 indicates the tililppfilhend portion. of a cupola which'maydoe :cylindricaisinrshapeand which :may have the sidewhichztheghot gasesmay be .-withdrawn iiroanrthe cupola. .The conduit 1:0 pneierably lead-s.--.toi-azi economizer (not shown) which utilizes the heat from the hot gases to preheat the fresh air entering the bottom of the cupola.

Suitably mounted on the top of the cupola is a charging hopper ll having an open bottom positioned in and of substantially the same size as the central aperture in the top wall 7 of the cupola, as shown in Fig. l. The hopper H may be of any suitable shape, the square cross sectional shape shown being merely illustrative. The open bottom of the hopper H is normally closed by a bell H of generally conical shape. The bell I2 is hollow and watertight, and projecting upwardly from the apex thereof is an elongated tubular stem l3. The interior of the stem l3 communicates at its lower end with the interior of the bell, and the upper end of said stem normally projects well above the upper margins of the hopper H. Spaced a predetermined distance above the bell i2, a horizontal disc or cap it is positioned within the stem 13 and seals oi? the portion of the stem l3 therebelow. This forms an enclosed water chamber within the bell i2 and within the lower end portion of the stem l3. Above the disc Hi the stem [3 is formed with a longitudinal slot i which extends to the upper end of said stem, as shown.

An elongated water inlet pipe it extends-vertically within the stem l3 from the upper end thereof downwardly through the cap it and into the bottom portion of the interior of the bell 12, as shown in Figs. 1 and 2. A water outlet pipe I! has its lower end projecting a short distance below the cap 14 within the stem 13, and said pipe extends upwardly through the cap M to the upper end of the stem 13, as shown. At their upper ends the pipes i6 and ii are connected respectively with pipes l3 and 19 which project laterally through the slot l5 of the stem I3 and may be connected to suitable water connections through flexible hoses (not shown).

A box shaped structural member 20 extends transversely of the hopper l I adjacent the upper end thereof, as shown. The member 20 may be formed of a pair of channel members 2| and 22, said members being joined along their upper sides by a plate 23 of inverted V-shaped cross section. The plate 23 is apertured adjacent its midpoint, as at '24, and the flanges of the members 2| and 22 are cut away to permit the passage therethrough of the vertical stem l3. Depending from the structural member 25 and surrounding the stem I3 is a guide sleeve 25 which may be reinforced by the gussets 26.

Mounted on top of the cupola 5 adjacent the hopper H and in alignment with the structural member 2!! thereof is an upstanding pulley supporting bracket 21 which carries at its upper end a rotatable pulley 28. Rotatably mounted within the structural member 20 is a rotatable pulley 29 which is positioned with a portion thereof extending through the slot 15 of the stem l3 and into the interior of said stem. An eye 38 is connected to the upper surface of the cap it, and a chain 3| has one end connected to the eye 39. The chain 31 extends upwardly over the pulley 29 and laterally outwardly within the member 20 through an aperture 32 formed in the side wall of the hopper II. The chain 3! extends over the pulley 28 and thence downwardly to the piston rod 33 of an hydraulic ram 34 which is mounted on the side of the cupola 5. Actuation of the ram 34 permits the stem l3 and the bell [2 to drop to the dot and dash line position thereof shown in Fig. 1, and said ram,

upon actuation in the opposite direction, is also operable to return said stem and bell to the solid line position thereof shown in the drawing.

A pair of cover doors 35 and 38 are hinged to opposite sides of the hopper ll adjacent the upper margins thereof. The doors 35 and 36 are provided with ears Si and 38 respectively to which are connected hydraulic rams 39 and 4d respectively which, in turn, are pivotally mounted on top of the cupola 5, as shown in Fig. 2. The rams 39 and 4B are operable to swing the doors 35 and 38 from their open positions shown, to closed positions wherein they substantially seal the open upper end of the hopper H. The doors 3&3 and 35 are preferably notched out, as at 41 and 42, to permit the doors to close around the stem i 3.

A charging bucket carriage track 33 is preferably positioned with its upper and terminating adjacent the upper end of the hopper H, as shown in Fig. l. Mounted for movement along the tracks 23 is a charging bucket carriage 44 having a pair of spaced charging bucket supporting arms 55 and it projecting from the forward end thereof. At their outer ends the arms (i5 and it are provided with suitable bearings for the reception respectively of a pair of trunnions ii and 38 which project laterally from a charging bucket 49 positioned therebetween.

The charging bucket 59 is preferably rectangular in shape, having spaced vertical side walls 53 and El, and spaced vertical end walls 52 and 53. Extending transversely between the end walls 52 and 53 is a hollow vertical partition 5-1 which is preferably closed at its upper end and open at its bottom end. The partition 54 ex tends substantially the full height of the end walls 52 and 53, and said partition divides the bucket 49 into two separate sections. The side walls of the partition 55 are spaced apart a sufficient distance to readily accommodate the upper end of the hopper stem I3 therebetween, as shown in Fig. 2. The end walls 52 and 53 are cut away, as at 55 and 56, to permit the bucket 49 to move r laterally into its position shown in Figs. 1 and 2 without interference from the upstanding stem IS. The hollow partition 5% may be provided with a horizontal plate 5! extending therein between the upper ends of the cut out portions 55 and 56.

The end walls 52 and 53 are formed with angled lower edges 58 which project upwardly and outwardly from adjacent the lower end of the partition 55. The lower edges of the side wall plates 55} and 5! are preferably horizontally extending, and they join the outer ends of the lower edges of the end wall plates at the bucket corners.

A pair of dump doors es and 6b are hinged to the end wall plates 52 and 53, as shown, and each of said clump doors, when in closed position, seals off the bottom of one of the sections of the bucket 49 formed by the partition 54. The pivots of the dump doors 59 and Gil are preferably so positioned with respect to the centers of gravity thereof, that when the bucket 49 is empty, said doors will swing to closed position. If the bucket is loaded, however, the load in the bucket will tend to swing the doors to open position to thereby discharge the lcad. The door 59 is provided with a pair of pivotally mounted latches ti on opposite ends thereof, and the door E38 is provided with a pair of cooperating latch pins 62 fixed thereto and cooperable with the latches 8|. When the doors 59 and 60 are swung to closed position, the

latches liFiirbp into plaic'e" over theiatchipins: 67E, tlfreafter"holding said do'ors in' closed position; A -pairofz projecting lugs 63 are formed on: theend wall- 5 2 'of the-bucket 49 'above" the: latch: 6 lY -asshown'intFis; l 'and' i2.l Pivotally mounted: 5 at the' outer: ends Lof "the lugs t3i isilazleverr: 641: having itslowerend enga'geable with the =un'v:1er':-'? sidiof the. adj acent" latch 6 i1 .1 A :leverii'ii5giwhich i is rsimilan to the lever: Mg-i'isipivo-tally imounteda; within the: hollow partitionfi 4; asiat 555;;1011111101' ment -in' the-same plane :asthat ofzthadeverr fito. Theelowerendxofztherileverufi5iiprojects'ithrou h anfiapeizture-rfi-lsrizr the: enclrrwa1lf53 -and3isiienregageablerwlththe undersidei offthe: adjacentrlatch: 6 l.:; .,as::shown: int: Fig.1 1.; pivotallyiconnectscthe aupper end...ofirtheuleverxfii'z to an upper end portion of the lever ii isaidwlinlcs extendingethrough :anraperture wfiiifiinz: then: end wet-11,252 as: showrrtinrEig. 2..

Azipairrofi'lugsrlfl project from-the end .wall 52r' above thezrluggBS; and pivotallyzconnected vat .itsw: IOWEIIIBIIdBUtO the: lugs '"l 5 is" an. upstanding; trip," leverrll the upperend of which: projects above thenupper-end :of the bucket 491 A- horizontah links-.12- pivotal1y; connects aniintermediate: por-. tionioi'the lever 1 l to" the: upper endxof the lever G L-Pas: shown;

Mounted-onutheiupper end. of.- eachoof. the bucket. carriage tracks;43'2is:a=generally -L-shaped bracket. member "1.31 havingiits outer end projectinga'above and beyondtheup-perendof thetracks I 431-. Connectedat. one vend to the, outerend of.- one:.of the.- brackets 13 and connected [at its. opposite. end-to. thev outer-end of the other bracket I3 is a chain 14. The; chain. 514 hangs in thepath o.the trip -;lever:l I andwhen the bucketcarriage i -moves athe "bucket I .4 9 into the dumping; posi--- tioni'oventheihopper; I I the trip lever i I engages theechain =14- and is. swung tin a clockwisevdirecw tiomaswiewed in;Fig-. 1. This pivots. the levers 64 :and1li5 innthetsame direction andcausesthe lowertends of: said levers to lift the. latches 6 I Liting-.' of:the latches 5| frees vthe-dump,doors 59* and-260, :andtheload in. the: bucket 49 forces 7 said w dump doors outwardly to permit emptying of theibucket. into the-hopper "I I'. When": the bucket-:- isrempty',x.the dump doors 59' and: 6% swing. back tOilClOSGdJIPOSifiOH; and. as the carriage 44 moves-@- downwardly' alongrthe tracks 43-; the trip --1ever.:..'| I becomes:zdisengagedxfronrv the chain r 74;,and the: 1613138264? and .65 move out of r. engagement. with theilatche'safi litorpermitsaid latches? to drop intow lobkingapositiomonzthe pin 52;v

Insop'eration'. of. the? improved t cupola :charging deviceptherbell v: I21 and the. stem: 1 3 are normally imttliearposition;shownrin:Figs; 1 and 2,. wherein= theiopenrbottom of: theihopper: l .l is sealed. The cupola 5 is in sealed condition, andrthehotigases" therefrom; arez'withdrawn through: the aperture 9 ranclkthecduct H12" The water-cooled top wall I andlthe water cooling: of the hell [2 and the lower portion: ofithe-Lstem. l3 prevents excessiveheating ofsthe=-=hopper l I and :the mechanism"associated: therewith.-.

stem: l 3T'iisiaccommodated': to permit close posi'-- 70 tioning: ofe-theubucket. 49 to the hopper mouth, andi the bucket iSIJdiVi'CIEd iIItQ two 'separates'sec-i tionsitwherebyt even: distribution oi-"the charges withinzthe'thopperzl I: is? obtained."

riage Y to the charging pity 'andaitheirainsrfi 9i and:

l2 and the stem= 5-3 toibe 'lowerecl toithe: dottlandx.

dash line position -shown inrFig. 1.: As iheustern; I 3' moves downwardly; the pulley: 2 9351 :accommo dated" within :the": slot ii -thereof;

cupola 1 itliiS deflected outwardly toward; the; pee" ripheryotth'e cupola-by the's'conical upper surface of the bell l2.-

Duringfthis operatiorrthe-e cup'olaris maintained in; substantially sealed condition: by the: closed doors 35 and 361 Whenlth'e hopper. i i is ei'lllptyi'f. "the ro'd 3 3 ofilthe ram ":3 t is: retracted to thereby? returnrthe stemiiiiiandithe .Ib'elLl fiifto" theirr'n'ormalpositibnssshown" inisolid .IlinessinLFigs; .1. anarf. 2. Theaidoors i35iand 36i1are-ithen swung to -open; position by retraction. :ofiithe rams .39; ancltfi it; and; -i thea hopper I 1 is'rthen readyxtdbe. refilleclzby; :theka:

chargingabucket 49;

Itis apparent that the improved cupolazchargr ingsdevice provides anrrefficientf means 1 for charg ingsa'zseale'd :cupola.:from;above withoutLbrealz inga.

-theseal of'the cupo'laa Thee-improvedshopper.

and: charging bucket combination.pernritsxadea quate. waterrcooling 1 as well. as :closeszpositioning-= of .the bucket to the hopperi'mouth; whileiattheu. same. time insuring proper .-distribution ot. the

echargewin' the hopper "It when therchargewisu;

droppedfrom the: two-section: bucket.-:

Various changes and modifications. may be: made without departingjiromthe spirit oftthea invention, .andall of-suoh cliangesaare contem plated-, as may come-within.thescope ofzithec.

claims;-

What lzclaimisz 1. In combination: cunola: having-jaswatertcooled top wall formed with a chargingziopeningg;

a charging hopper havingi-a-bottom opening of ,theretliroug-h; a hollow conical member. normally-g.

positioned 'in and sealing said. hopper bottonto opening; an. elongated tubular stem projecting upwardly from saidrconicalmember; through the aperture in said transverse-structural member;

said stem textending'za substantial-distance-above.- the-upper end ofsaid hopper water connections w for circulating coolingwater. through: said hol.--.- low: conical member; said water connections: exttending. upwardly. within said elongated stem; 1

and actuating: mechanism includinge 111611113615.

extending. within said hollow rstructural. member. and COIlIlGC'bGdr'BO "said: stem for movinglsaiolstem? and-conical member. downwardly to open. them hopper bottomopening whereby the r'contents- ;of said hopper-mayi-fa'll into the cupola...

2.. In combination: .a cupola .havingarw aterx cooled-topwall formed. with a charging iopening; a icharging, hopper having; a a'bottom opening-.--of@. substantiallythe same size as andin-registra- *tionwithisaid charging opening; axhollow struoa tu'ra'l a member extending transversely:across saidhopper: and having .a..vertical-.aperturetextendingz: therethrough; a guideisleevei depending from said; transverseistructural :member coaxiallyswitlnsaid:

All. of: the: charge in the=hbpper isith'ereby"permittedto drop: into the cupol'a', andias the charge: drop's into'thear mally positioned in and sealing said hopper bottom opening; an elongated tubular stem projecting upwardly from said conical member through said guide sleeve and through the aperture in said transverse structural member, said stem extending a substantial distance above the upper end or" said hopper; water connections for circulating cooling water through said hollow conical member, said water connections extending upwardly within said elongated stem; and actuating mechanism including a flexible member extending within said hollow structural member and connected to said stem for moving said stem and conical member downwardly to open the hopper bottom opening whereby the contents of said hopper may fall into the cupola.

3. In combination: a sealed cupola having a water cooled top wall formed with a charging opening; a charging hopper having a bottom opening of substantially the same size as and in registration with said charging opening; a hollow, structural member extending transversely across said hopper and having a vertical aperture extending therethrough; a hollow conical member normally positioned in and sealiir said hopper bottom opening; an elongated tubular stem projecting upwardly from said conical member and communicating with the interior of said conical member, said stem projecting through the aperture in said transverse structural member and a substantial distance above the upper end of said hopper; a transverse cap positioned within said stem intermediate the length thereof and forming a water chamber within the portion of the stem therebelow and within said conical member; water connections for said water chamber extending through said cap and projecting upwardly within said elongated stem; actuating mechanism includin a member extending within said hollow structural member and connected to said transverse cap for moving said stem and conical member downwardly to open the hopper bottom opening whereby the contents of said hopper may fall into the cupola.

4. In combination: a sealed cupola having a water cooled top wall formed with a charging opening; a charging hopper having a bottom opening of substantially the same size as and in registration with said charging opening; a hollow, structural member extendin transversely across said hopper and having a vertical aperture extending therethrough; a guide sleeve depending from said transverse structural member coaxially with said vertical aperture; a hollow conical member normally positioned in and sealing said hopper bottom opening; an elongated tubular stem projecting upwardly from said conical member and communicating with the interior of said conical member, said stem projecting through said guide sleeve and through the aperture in said transverse structural member and a substantial distance above the upper end of said hopper; a transverse cap positioned within said stem intermediate the length thereof and forming a water chamber within the portion of the stem therebelow and within said conical member; water connections for said water chamber extending through said cap and projecting upwardly within said elongated stein; actuating mechanism includin a flexible member extending within said hollow structural member and connected to said transverse cap for moving said stem and conical member downwardly to open the hopper bottom opening whereby the contents of said hopper may fall into the cupola.

5. In combination: a cupola having an opening at the top thereof; a charging hopper above said opening having a bottom opening in sealed communication with said cupola opening; a hollow structural member extending transversely across said hopper and having a vertical aperture therein; a vertically movably mounted closure member normally sealing said hopper bottom opening; a tem projecting upwardly from said closure member into the aperture of said hollow structural member; and actuating mechanism including a member extending within said hollow structural member and connected to said stem for moving said stem and closure member downwardly to open the hopper bottom opening, whereby the contents of said hopper may fall into the cupola.

6. In combination: a cupola having an opening at the top thereof; a charging hopper above said opening having a bottom opening in sealed communication with said cupola opening; a hollow structural member extending transversely across said hopper and having a vertical aperture therein; a guide sleeve depending from said transverse structural member coaxially with said vertical aperture; a vertically movably mounted closure member normally sealing said hopper bottom opening; a stem projecting upwardly from said closure member within said guide sleeve; and actuating mechanism including a member extendin within said hollow structural member and connected to said stem for moving said stem and closure member downwardly to open the hopper bottom opening, whereby the contents of said hopper may fall into the cupola.

'7; In combination: a cupola having an opening at the top thereof; a charging hopper above said opening having a bottom opening in sealed communication with said cupola opening; a hollow structural member extending transversely across said hopper and having a vertical aperture therein; a vertically movably mounted hollow closure member normally sealing said hopper bottom opening; a stem projecting upwardly from said closure member and communicating with the interior thereof, said stem extending into the aperture of said hollow structural member; a transverse cap sealed to said stem and formin a water chamber within the portion of the stem therebelow and within said hollow closure member; water connections for said water chamber extending through said cap; and actuating mechanism including a member extending within said hollow structural member and connected to said transverse cap for moving said stem and closure member downwardly to open the hopper bottom opening, whereby the contents of said hopper may fall into the cupola.

8. in combination: a cupola having an opening at the top thereof; a charging hopper above said opening having a bottom opening in sealed communication with said cupola opening; a hollow structural member extending transversely across said hopper and having a vertical aperture therein; a guide sleeve depending from said transverse structural member coaxially with said vertical aperture; a vertically movably mounted hollow closure member normally sealing said hopper bottom opening; a stem projecting upwardly from said closure member and communicating with the interior thereof, said stem extending within said guide sleeve; a transverse cap sealed to said stem and forming a water chamber within the portion of the stem therebelow and within said hollow closure member; water connections for said water chamber extending through said cap; and actuating mechanism including a member extending within said hollow structural member and connected to said transverse cap for moving said stem and closure member downwardly to open the hopper bottom opening, whereby the contents of said hopper may fall into the cupola.

9. In combination: a cupola having an opening at the top thereof; a charging hopper above said opening having a bottom opening in sealed communication with said cupola, opening; a hollow structural member extending transversely across said hopper and having a Vertical aperture therein; a vertically movably mounted closure member normally sealing said hopper bottom opening; a stem projecting upwardly from said closure member into the aperture of said hollow structural member; a reversible power source; and a member extending within said hollow structural member and connected to said power source and to said stem for moving said stem and closure member downwardly upon actuation of said power source in one direction to permit the contents of said hopper to fall into the cupola.

10. In combination: a cupola having an opening at the top thereof; a charging hopper above said opening having a bottom opening in sealed communication with said cupola opening; a hollow structural member extending transversely across said hopper and having a vertical aperture therein; a vertically movably mounted closure member normally sealing said hopper bottom opening; a stem projecting upwardly from said closure member into the aperture of said hollow structural member; a fluid pressure operated ram; and a flexible connecting member extend ing within said hollow structural member and connecting said ram and stem for moving said stem and closure member downwardly upon actuation of said ram in one direction to open the hopper bottom opening and permit the contents of said hopper to fall into the cupola.

11. In combination: a cupola having an opening at the top thereof; a charging hopper above said opening having a bottom opening in sealed communication with said cupola opening; a hollow structural member extending transversely across said hopper and having a vertical aperture therein; a vertically movably mounted closure member normally sealing said hopper bottom opening; a stem projecting upwardly from said closure member into the aperture of said hollow structural member; a fluid pressure operated ram mounted externally of said hopper; and a flexible connecting member having one end connected to said ram and having its other end extending into said hollow structural member and connected to said stem for moving said stem and closure member downwardly upon actuation of said ram in one direction to open the hopper bottom opening and permit the contents of said hopper to fall into the cupola.

12. In combination: a cupola having a top wall provided with a charging opening; a charging hopper having a bottom opening of substantially the same size as and in registration with said charging opening; a vertically movably mounted closure member normally positioned in and sealing said hopper bottom opening; a sheave rotatably mounted on the hopper above said closure member, a second sheave rotatably mounted References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 273,194 Uehling Feb. 27, 1888 365,077 Kennedy June 21, 1887 401,394 Walsh Apr. 16, 1889 1,275,789 Taylor Aug. 13, 1918 2,414,209 Palm Jan. 14, 1947 2,417,288 Bernard Mar. 11, 1947 2,535,179 Wallsworth Dec. 26, 1950

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