US1916021A - Door cleaner - Google Patents

Description

June 27, 1933. c. B. SHERRILI. ET AL DOOR CLEANER Filed Jan. 14, 1931 5 sheets-sheet 1 u n 11111flw11i11l1.1111111-11 ......1,1...1 -U1 T11 1 1..

June 27, 1933.

ac. B. SHERRILL Er Al.

DOOR CLEANER Filed Jan. 14, 1951 5 sheets-Sheet v2' June 27, 1933 c. B. sHER'RlLl. ET AL 1,916,021

DOOR CLEANER FiledV Jan. 14, 1931 5 Sheet-Sheeb 3 June 27, 1933 c. B. sHERRlLl. ET AL 1,916,021

DOOR CLEANER Filed Jan. 14, 1931 5 sheets-sheet 4 June 27, 1933. Q Bl SHERRlLL E1- AL 1,916,021

DOOR CLEANER I Filed Jan. 14, 1951 5 Sheets-Sheet 5 Patented June 27,1933

UNrrsD vSTATES* PATENTJOFFICE DOOR CLEANER Application sied January 14, 1931'. seriai' No. 508,734.

rlhis invention relates to door-cleaning apparatus, and more particularly to an apparatus for cleaning the doors of colte Ovens.

Coke oven doors are removed by means of door-handling mechanisms of two types. If the door to be removed is at the coke discharge side of the oven, the door-removing apparatus is simply an independent machine accomplishing no other function, the machine being shifted after removal of the door to one side of the door Opening so that the coke may be removed therefrom. The doors at the pusher side'of the oven, or that side at which a ram is introduced to force the coke from the Oven, are removed by door: handling mechanism which is carried by the pusher carriage. The pusher carriage must, of course, be shifted in order that the doorhandling mechanism may be moved out of r alignment with the door and the pusher ram brought into alignment with the door opening.

An important Object of this invention is the provision of scraper apparatus for scraping the edges of the door which operates automatically either through the transverse movement of the carriage Or as an incident to a normal Operation of the carriage oran element thereof occurring Ain the period between removal and replacementof the door.

A further vand more specific Object of the invention is to provide in combination with a door-removing and supporting carriage which is shifted after removing the door and while supporting the same, first out of and then into alignment with the doorway, scrapers acting upon the sides of the door, these Scrapers moving longitudinally of the door in one direction as the carriage moves the door out of alignment with the doorway, and in the opposite direction when the carriage returns the door into alignment with the doorway.

A. still further object of the invention is to provide apparatus for automatically discontinuing operation of the scrapers when they have completed their longitudinal travel upon the door edges andare clear therefrom.

A still'further objectY of the invention is the-production of. apparatus of this character which ymay be readily applied Vto the door carriages asnow constructed without materially altering the construction thereof. 'These and other objects we attain by the construction shown in the accompanying drawings wherein, for the purpose of illustration, we have shown a preferred embodiment of our invention and wherein:

Fig. 1 isa plan view partially brokenaway of a door-handling carriage for use at the coke dischargel side of coke ovens and equipped with door-cleaning'apparatus con-V structed Vin accordance with our invention;

Fig. 2 is avertical sectional view through l65 the door-handling apparatus taken on line 2 2 of Fig. 1; Y Y .i

Fig. 3 is a front'elevation thereof; y

Fig. f1 is an enlarged detail view showing the clutch mechanism controlling operation of the door side Scrapers;

Fig. 5 is a fragmentary perspective showing the Vconstruction of the door bottom scraper'g' Y Fig is an end 'elevation of door-handling and coke removing apparatusfor use at the pusher ram sideA of the colte oven including door cleaning apparatus constructed in accordance with our invention; and

Fig. 7 is a plan view of the mechanism` shown in Fig. 6 portions being broken away to illustrate the Operating connections for the cleaning apparatus. Y Y y n Referring now to the drawings,and more particularly to Figs. 1 to 5 thereof, the nul meral 10 generally designates a carriage loperating on tracks 11 andr propelled along such tracks by amotor 12 the control for which is designated at 13. Supported by this carriage is door-removing apparatus including a' base le pivotally mounting a pair of bell crank levers 15, corresponding arms 15a of which are connected asatl for simultaneous movement, One of these bell cranks being rotated through a segment gear connected with one arm thereof asiat 17 and having the teeth thereof engaged by apinion driven from' a motor 18 controlled through `Va controller 19l mounted upon the base "14.

Supported by pivots 20 on the' remaining CLAYTON P. sPrnRnILL, OP PHILADELPHIA, AND woon D. GnItsTnLL, or ARDMORn',

PENNSYLVANIA arms of the bell crank levers is a standard 2l which extends above the upper end of the upper bell crank and there supports a transmission casing 22 mounting a motor 23 and suitable reduction gearing not herein disclosed. The upper and lower bell cranks-15 each mount upon the pivot 2O thereof a hook 24 the hub of the upper hook having a segmental worm gear25 engaged by a vworm 27 on the output shaft 26 of the transmission Hooks 24 are con-A operated by motor 23. nected by a link 28 so that they'move in unison. The operation of this portion Aof the apparatus is as follows: -The carriage is aligned with the door which has socket members 29 on its outer face to yreceive the hooks 24; the'bell crankswith the hooks'24 in depressed positionl are then driven through their motor 18 until the ends of the Vhooks have entered the sockets, after which motor 23 is operated to cause the hooks to swing and come to their-locking positions as illustrated in Fig. 2. Bell vcranks 15 are then'again actuated 'to cause the pivots 20 to move outwardly carrying the door with them. .The apparatus as described is commonto door carriages at theL discharge side of coke ovens and forms nol part'of our invention except in combination vwith the mechanism hereinafter described. v

In'accordance with our invention, we support from the frame of carriage l0 as at 30, vand fromthe base 14 as at31 a pair of vertically-extending guides 32 at present shown as comprising I-beams Thesel beams are spaced apart a distance sucient to permit passage of the door therebetween and are arranged atopposite sides of the door as it i's moved to and from the door opening bythe door-handling -mechanism hereinbefore described. From :the main frame member of the rcarriage we support a ydoor bottom scraper 33, this scrapervbeingarran'ged between the verticalfguides 32 and being at present shown 'as comprising a `metallic block pivoted at a point-above its center as at 34 and having on its .upper edge a series of longitudinally-extending ribs 35. The excess weight of the lower end of thesblock 33 tends to keep the ribs 35 in engagement with the lower door edge as the door is moved into and out of the opening. Between the up- .rightk guides at the upper ends thereof we support an upper edge scraper 36, this scraper simply comprising a weighted block snpported from a cross member 37, connecting the upper ends of the guides, through links 38. VThis scraper acts upon theupper door edge .through its own weight toscrape thc same as ythe door is moved into and outrof the opening bythe door-handling mechanism and passes between the guides 32. y

Vertically shiftable upon each; yguide 32 iis a 'slide 39, each slide carrying `a scraper blade ,40 Iwhich may beotany desired construction and is at present shown as a metallic strip, the inner edge of which is shaped to conform to the shaping of the door side as indicated at 4l. The slides 39 of guides 32 are connected to one another through a flexible element 42y which passes from one slide over sheaves 43 atthe tops of the guides downvrrWardly along the second guide to the other of theslides,over sheaves 44 and 45 at the bottoms ofthe guidesv about a drum 46 back over asheave 47 at the bottom of the adjacent guide and thence to the first-mentioned slide. It will be obvious that as the drum 46 is rotated slides 39fwill move in opposite directions so that when one of these slides is at the top of'its associated guide the other of the slides is at the bottomthereof.

Drum 46 is driven from the gearing train 48 of the carriage-drive ythrough a pinion 49 and .a clutch shaft y50,'the clutch being designated at 5l and is at present shown as of the jaw-type, the movable jaw being designated Vat 52 and being shifted through a'lever 53. This lever may be actuated either by hand or through automatic trips as follows: From the frame Vthrough suitable brackets we support a rock shaft`54 having arms 55 and 56 arranged inl the path veither of the several movable Scrapers or in the paths of the slides bearing these Scrapers, the former construction being herein illustrated. This shaft has an armv connected through a link 58 with the lever 53 to actua-te the same when the shaft -is rocked as by engagement of either of thescrapers with the associated trip arm 56, Yto shift the section 52 of the clutch vand so discontinue operation of drum 46. in order that this connection may not interfere with reengagement` of the clutch, the 'connection between link-58 and lever 53 is in the form of a-pin 59 operating in a slot 60 directed transversely of the lever. Pin 59 is normally coniinedat 'one end of-this slot by a spring- .pressed latch 6l the outer face of the nose of which is tapered at 62 so that when the pin vis at any-otherthan its normal position withinthe slLot it may' lift the latch 6l and pass to this position. Latch 6l is controlled :through a hand grip 63 at the upper end of the lever in order that itmay be moved out of the path of the pin and thus permit lever 53 `to be independently shifted. in order ,that the latch pin 59 may be returned to its normal position a bias spring 64 is employed to ,eonstantlyfurge rotation of rock shaft 54 Qinr-thefdirecticn of the arrow of Fig. 4. .y `j vAssumin g the machine to have been stopped opposite a door and the door-handling mech- .anism operated to move the door between the guides, it will be obvious thatthe upper landlowervscrapersl act .upon the dcor as it moves through the guides to effect a cleaning Aoperation 'of the upper and-lower edges thereof. The door having reached the proper ,position,-,.travejl of? thefc'arriage 10 isf begun,

and assuming that the lever has been oper edges of the door, the downwardly moving scraper will engage the co-acting trip lever 56, rocking shaft 57 and thus disengaging the sections of the clutch. TvVhen the travel of the carriage has been completed the. operator moves the lever 53 to reengage the sections of the clutch. After the coke has been site directions,

ejected from the oven and the door is to be replaced, the carriage is again moved to bring the door into alignment with the opening and in this movement the movement of the slides 39 and their scrapers willvbe reversed, the other of the trip arms coming into action when the movement of the scrapers has been completed. The sides of the door are thus gif-Jentwo distinct scraping actions in oppo- As the door is moved by the door-handling apparatus to place it in position, the upper and lower scrapers again come into action scraping the upper and lower edges of the door so that these edges too have received a double cleaning action. x

The door cleaning apparatus associated with the pusher differs from thatrjust described only .in parts rendered necessary by the machine design employed in the pusher carriage. Tn the pusher carriage, the carriage body 65 whilevmovable along tracks 66 as in the case of the discharge doorremoving carriage, is shifted therealong only a relatively short distance after the door ly that necessary to align thepusher ram 67 with thedoor opening from which the door has been removed. This distance does not afford a suiiicient movement to enable proper operation of the scrapers and it is, accordingly, necessary to adopta further means hereinafter set forth.`

Likewise, on such pusher carriage the doorremoving means is somewhat modified due to the fact that the oven at this side thereof is defined by an outstanding shelf or bench 53 which projects out from 'the face of the oven for a distance approximating seven feet. This door-handling apparatus, accordingly, comprises a carrier bar 69 mounted to move transversely of the carriage and to and from the oven, suitable guides 70 being provided for this bar. The forward end of the bar mounts a head 7l, the upper and lower ends of which pivotally mount door hooks 72 adapted to swing in the same vertical plane and connected as by link 73 for simultaneous movement. The head alsomounts a motor 74 'for rotating one of said hooks about its pivot.

thoroughly cleaning the same.

has moved, this distance being mere# This head is unsupported from the carriage except through the carrier bar 69 and, accordingly, affords 'al space therebetween admitting of the support of a transverse shaft 75 from the carriage, this shaft paralleling a longitudinal edge of the carriage. At this edOe Vof the carriage we support the spacedy vertical guides 32 with their associated door topand bottom scrapers 33 and 36. At the f top and bottom of each vertical guide 32 we arrange a sheave 76 and upon each guide a slide 39 having a scraper blade 40. Shaft f 75 in alignment with each vpair of sheaves 76 is provided with a drum 7 7 about which n a cable is wound, the ends of which pass over theupper and lower sheave 76 at the corresponding guide and are connected to the respective slides so that upon rotation of shaft 75 the slides 39 and their scrapers willshift longitudinally of the slides. g

In this construction it is feasible to have the slides move in the same direction on the guides. l/Vhere this is done, however, it is necessary that theV stop mechanism controlling the drive of the scrapers be duplicated at the .top and bottom of the doorebut it need bel arranged in the path of only one of the scrapers. ln the present instance we have shown a pivoted arm 73 disposed near the bottom of one of the guides and a pivoted lever 7 9 connected to the top of the other of the guides, the arm and lever being connected through a l'nk 80. The arm 7S constitutes one arm of a bell crank lever, the other arm 8l of which is connected through a linkl 82 with a clutch-shifting arm 57a operating a. Y

clutch lever and soa clutch as in the construction hereinbefore described.

Since as noted hereinbefore themo'vement of the carriage is too slight to permit of proper drive ofthe scrapers therefronnwe employ the drive of the ram 67 which, after the carriage has been shifted, mustbe operated to first shift the ram into the. oven and Veject coke from the discharge door and then reversely operated to withdraw'the ram from the oven.- This drive mechanism or dinarily includes a motor 83 driven through a transmission 84C, a shaft 35 having a pinion 86 engaging a rack 87 .formed in the vunder surface of the ram. an extension S8 provided with a drum 89 used foi` emergency hauling in retracting the ram or any other desired operation. This shaft we connect through beveled gearing 90, a lclutch shaft 91 and beveled gearing 92 with shaft vhereinbefore described, the clutch 50 being disposed in this shaft.

t will be obvious that in operation of the pusher nism thereof is first aligned with the door and connected therewith to withdraw the door and during this withdrawal the upper This shaft usually has' carriage the door-'handling mecha.-

and lower scrapers 33 and 36 operate in eX- Y door-handling carriage at the. opposite side of the coke oven. The carriage iS 'then moved to `valign the ram 67 With the 4door opening-from which the door has been removed and ram Gais actuated to force the coke from the loven. During this actuation, assuming the lever 53 has been set to engage the sections of theclutch, Shaft,v 7 5 will be driven until the Scrapers' have moved'from one end of the door to the other end thereof Where ythe Scraper Slides 39 will come in engagement yWith either the lever '79 or arm 78 and cause disconnection of the clutch. After-'thc operation of discharging coke has been completed and the ram ris to be reversed and at any time during this reversal, lever 53 may. be again actuated to connect the clutch sections and the movement of the Scrapers ivill be reversed. 'It will be noted that in both instancesactuation of the Scrapers is accomplished asanincident to a normal operation f the carriage or anelement thereof and that is both instances the cleaning operation iS a ydouble operation effected rduring reversals of said normal operation of the can riage; It will, accordingly, be understood thatthephrase in normal operation of the carriage7 covers either the actual movement of the carriage proper or of an element forming anormal part thereof.Y Attention is 0d1- rected to the fact that Withthe construction illustrated the Scrapers having completed their travelin either direction 'are clear of the door so that the door may be shifted through the door-handling apparatus rWithoutany interference'by the Scrapers.

ySince the construction employed is obviously capable of a considerable range of c lange and modification Without in any manner departing from the spiritrof oui` invention, We do not Wish tooe understood as lnimiting ourselves thereto except as hereinafter claimed.

We claim: e ki 1.111 apparatusfor cleaninofthe doors of coke. ovensand'the like, a carriage, means supported from the carriage and constructed and a ranged to engage an ovendoor and removeand replace the same, and to support the door in a given position when removed, mechanism associated vvith said carriage and adapted to be reversely operated after removal of a door by said door-carrying mechanism and prior to replacement thereof,

means to operate said mechanism, shaft,

means connecting said Shaft and said operating means whereby the shaft is reversely op'- erated as anv incident to operation Yof Said mechanism, Scrapers adapted to travel longitudin'ally of the door when in said given p0 Sition, an operative connection between said Shaft and ,Said Scrapers whereby the Scrapers are A.movedlongitudinally of the door-upon operation 'of the Shaft, an operative connection between, the Shaft and Scrapers including a clutch', and ymeans disengaging said clutch after"afpredeterinined travel of the Scrapers under influence of the shaft said vmechanism comprising 'propelling means for the carriage vwhereby said Scrapers are actuated during movement of the carriage to Withdraw the' door-handling mechanism from alignment with the door opening from 'which the door has been removed to permit discharge of material from the oven.

2. In apparatus for cleaning the doors of coke ovens and the like, a carriage, means supported from the carriage and constructed and arranged to engage an oven door and re move and replacethe'same, and to support the doorin -a given positionl When removed, mechanism associated with said carriage and adapted to bereversely operated after removal of a door by said door-carrying mechanism and kprior to'v replacement thereof, meansV toA operate said mechanism, a shaft, means connecting said shafty and said operating means whereby theshaft is reversely operated as an incident tov operation of said mechanism, Scrapers adapted to travel longitudinally of the door -when in said given position, an operative connection between said Shaftand Said Scrapers whereby the Scrapers are moved longitudinally of the door upon operation of the Shaft, an operative connection between thepshaft and Scrapers including ay clutch, andfmeans disengaging said clutch after a predetermined travel of the Scrapers under influence of the shaft, the mechanism associated yWith the carriage comprising a ramadapted `to enter the opening vleftbvreinoval 'of the door, said ram including a portion formedr as a rack, and gearing connecting/said rack 'and ySaid Shaft.

In adevice of the character described, spaced parallel guides, Scrapers mounted for movement therealong,a member, connections betvveenthe Scrapers and member whereby the Scrapers' are oppositelj moved upon their guides ,when the member is rotated, a shaft, means for `alternately 'rotating said shaft in opposite directions, a clutch to connect the shaft and member, a vpairof trips located one in the path of each of Said Scrapers t0 be 'moved thereby, a single shaft to Whichcsaid trips are VSecureda'nd an operative connection between said Shaftand said clutch con- Structed'and arranged. to disconnect the clutch upon operation of theshaft by movement of either triphv the associated scraper.

CLAYTON B. sI-IERRILL. I Woon D. GERSTELL.

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