US1554275A - Leer - Google Patents

Description

R. Gooi:

Sept. 22, 1925.

LEERv ROBERT GOOD.

. R. .GOOD

Spt. 2z, 1925.

' 'LEER Filed Jenn,A '27. 192s e sheetsLsheet :s

ROBERT GOOD.

R. Goop Sept. 22, l 925.

LEER

e sheets-sneet 4 Filed Jan, 27, 1923 QOBET GOOD.

Mmjwg @Btg/M310 .Mw v, m Y o 5 QN s u RN t T 1 w a, 6 ,n B m R. GOOD y LEER Filed Jan.' 27,

Patented Sept. 22, i925.

ROBERT Goorfor WASHINGTON, PENNSYLVANIA, assreNoa or ena-HALF To Haart! ATLAS GLASS COMPANY, or WEST VIRGINIA.

WHEELING, WEST v-IRGINra, a ooRPoaaTroN or LEER.

i Application filed January 27', 1923. Serial No. 615,360.

` To aZZw/wm it may concern.:

Be it known'that I, ROBERT-Goor), a citi Zen of the United States, residing at` Washington, in the county ot l/Vashington and State of Pennsylvania, have 'invented lnew and useful vImprovements in Leers, of which the following is a full, clear, and exact description.

Theglinventionrelates to'leers for annealing glassware, and more particularly to a vertical leer construction ot' comparatively small cross sectional area which results in a great saving of floor space.

'One of the objects `of the invention is to provide a leer so constructedthat it will reduce .to a minlmunrthe amount 'of auxiliary '39 stroy the ellcct of the annealing process.

The invention also includes a novel means for feeding the glassware to the conveyer;

a new andimproved' means'for operating the conveyer step by'step and locking the 'same ,during` the rest period; means tor i shifting the glassware Vfrom the downward run or the conveyer to the upward ru-u thereof; means for accurately controlling the temperature of the leer; the elimination ofthe interuxediate even; and numerous other advantageswhich will be apparent to one skilled in the art from thel following detailed description when taken in connection with the accompanying drawings, in which Figure l is a side elevation of the leer; parts being broken away to more clearly vshow the construction.

Figure 2 is a side elevation of the upper portion of the apparatus. Figure 3 is a side elevationof the lower portion of the apparatus, andbeing a continuation ot' 'Figure 2.

Figure 4 is a front elevation of the upper` portion ofthe apparatus. y 55, Figure 5 is a front elevation of the lower portion of the apparatus, and being a continuation of Figure t. y

Figure 6 is a vertical sectional view ot the upper portion of the apparatus. y

Figure 7 isa fragmentary sectional view of the carriage for, operating the tray; the section being taken on line 77 of Figure 6.V

Figure 8 .'is'a plan view on an enlarged scale of the tiltable closures for sealing the `space about the conveyer chains to prevent entrance ot'air; and Figure 9 is a vertical sectional View on line 9-9 of Figure S.

Referring to the drawings more in detail, numeral Lindicates the walls of the leer, which are formed of any desired insulating material, such as cork brick. Mounted on the top orl the oven walls is a mutlle 2, which is preferably heated by gas jets, and which is provided on its outer sides with heatinsulating walls l.

A vertical endless conveyer, indicated generally by numeal 4, is mounted to travel downwardlythrough the leer and upwardly o1. the outside thereof. This conveyer is provided with a series of suitably spaced shelves, or leer pans, for carrying the glassware. The glassware is supplied to the shelves at the `feeding station, and the conveyer moves slowly, stepby step, downwardly through the leer. After passing through the leer the glassware is automatically transferred to the upward run of the conveyer; the Vglassware then being carried upwardly to a convenient point for unloading. The construction of the ware-carrying conveyei, and the mechanism for operating the same will tirst be described.

taken "r1/:struction nml operation of the ware-0mffy/'i12 g omweg/m. e

Transverse shafts 5 and VG are mounted above and below the leer respectively, and transversely thereof. Two spaced chain 4wheels are mountedon cach of these shafts,

and an endless chain, indicatedby numeral 7, 'travels over each pair of chain wheels.. The endless chains are provided with rollers 8 that tit into recesses Q ormed in the periphery ot the chain wheels.Y The rollers 8 pass between a` pair of angle ironsfS aryranged inthe leer walls; the function of the'rollers and angle irons being to prevent any tilting of the leer pans carried by the links.

.sla ,ension in: the

yilnralit,v o

at ,achA

. 1 1; chains may oe feariiis li Vil , or operaine the ware-carrying eonvcver a humor 1l is oviderl.

nd this nur' fr drives a vorm wheel l1" viiicli is adapted to he operatively cfxinecteii lo transverse shaft hv means or' a clutch lfixed to the l c'snt the f lz). insite end thereof, "Nillil l PI'UVQ OH lts a menihcr l wall with a cani track outer im the cam track heine' formed with a de ession '1G therein. hatt 1T has a weienied operativt'ttallv attached to the. arin if? is :i link 2d and the opposite end of this link is resilientiv connected to the clutch-operatingr arin 21 by meansnoil coil spring;` rlhe arm El is pirotallv attached its lower end to a lira "tet Q3, an(` c r end the n engages the clutch v upper end the arm 19 larries a roller which rides on fire Cain track 15.

rlie operation of the mechanism thus far cf Arihed is :is lfollows:

lllhen a trav of `glassware has heen placed on one of the conveyer shelves, in a. manner to hev hereinafter described, and the operatordes'ires to move the conveyor one step, it is onlynecessarvY for him to lift the operating lever 18. thereby moving' the arm 19 to the right (Figure this movement of the arm 19 rees'the roller 2l from the depression 1G of the cam track`r and at the same time throws the clutch 13' into operative position, so that the shaft 12 starts immediately to rotate,A and the roller 2l rides on the cam track 15, thus holding the clutch in operative position. The rotation of the shaft and cani will continue for one complete revolution and when the revolution has heen completed the roller moves into the depression .1G and the clutch is thereby carrie' movement or f nre l) to throw i, when the (lepre inc-nt with the i ily reference Ythat the shari wheels, l s a d disk is provided slots 26 and clearlyY shown which is driven arm 2S adapted to en;l late the vdisk ui ol! the radial sl linger clears the slotl are no longer rotaia` e z a of locking the dish and shari'r in ihisposition the end olE shaft 1*.) rovided with oclr ingr segment 3G which engages in one of the, peripheral `grooves QT `the dislroi prevents an)r further fit will he understood that alter the arm has made a complete revolution, and the linger Q9 is ready to enter the next radial slotr` the locking segment Si@ will have moved to a position to permit rotation of the disk and shattf'.

t is, thus seen tha" whe. the operating si L lever 1S is lifted the cluch 1?@ is thrown into miticailjvT thrown into 'inoperative position. i

During;` this revolution the shaft 12 the arm 28 carried hv the shaft engages-one, of the radial slots, h v nieans o-if the linger 29, and rotates the dislr and shaft predetermined distance io move the conveyor shelves one step; and as soon as the linger Q9 iS free ol theradial slot the inciting segment 30 engages one of the peripheral grooves and locks the disk 25 and the oonveyer shaft 5 against jfurther movement.

rhe next feature of the invention to he described will bethe mechanism for feed ing the glassware to the leer Means for feeding glassware to the Zeer.

on the top` of Which- Mountecl on `the oute (Maaate i l ln the operation of feeding glassware to the leer a tray'is'placed on the frame 32 and this depresscs all of the dogs that are under the tray. A row of glassware is now placed on the tray, as indicated by numeral 36` (Figure, 6), and the carriage is moved,

f inwardly, in a manner to be hereinafter. tiescribed, by the engagement of the. upstand-l ing dogs with-the outer wall of the tray. The tray is thus carried into the leer a pre-` determined distance, which distance will be substantially equivalent to the width of the glassware. The carriage' is now moved back, thus freeing another set'of dogs which en`- gages the outer wall of the tray; and as soon as another row of glassware has been placed lon ,the tray the operation is repeated to move the second row'into the leer, and the.. operation is continued until the tray has been filled and moved entirely within the leer, where it rests on' one of the shelves or leer pans 10.

Obviously, it is desirable tohave themouth 31 of the leer closed between the feeding operation; and-for that purpose a vertically 'sliding door 37 is provided adjacent the mouth, the door being of such a .width that it will lit down into the tray, totthe rear of the last row of glassware that has been fed into the leer. Of course, the door i also fixed to this shaft is an .operating lever 43 by which the shaft 42-is rotated/to raise and lower the arms 40 and, through the connection already ddescribed, to thereby raise and lower the door 37.

In the operation of the feeding mecha? nism. the doorA is first lifted, and immediately\ the carriage and tray carrying the glassware are moved inwardly one step; the door is then lowered into the tray and the carriage is moved backwardto its position for the next feeding operation. It is desirable, of course, that a single meansbe provided `to move the door and feeding A mechanism in their proper sequence, and

the means for accomplishing this will now be described. i

A treadle 44 is suitably mounted for con-y venient control by thefoot of thel operator, and this treadle is `pivo'ta'lly vconnected to an .wardly.

upwardly extending rod 45. The upperend 'of `the rod 45 is slidably mounted in a block carried adjacentthe end of the lever 43, and' a coil spring 46 is mounted on'the rod between the block and an adjustable collar '45. It' is thus seen that upon depressing the treadle 44 -the rod' 45 is raised, and, through the spring connection 46, the lever 43'is raised, thereby lifting the door 37.` Upon further upward movement of the rod 45the door lwill merely remain in its open position,v while the rod slides on through its bearing in the lever 43 against the pressure of spring 46, as clearly shown in Figure 2. lt is during this further upward movement of the rodrthat the feeding mechanism is operated,

as' will now be described.

A shaft 47 extends substantially half way i across the front of the leer, beneath the` feeder carriage, and fixed' to one end of this shaft is an arm 48 whichis located beneath the center line of the carriage, and this arm is pivotally 'connected to the carriagev by means of a. link 49'. Fixed tothe opposite end of the shaft 47 .isan armi50, and this arm is pivotally connected toa'block- 5lV by a pair of links 52; the block v51 being loosely mounted on the rod 45 so that the latter is freely movable therethrough. AAlsomounted 4on the rod45, but iixed thereto, `is, asecond bloc-k` indicated by numeral 53.

raised, by depressing the treadle 44, .it will- `first cause "the door 37 to -beV opened, the

feeder carriage remaining stationary. Upon 'further upward movement ofthe rod the block 53 will strikethe bloclrl, thereby raising the arm 50 and moving the arm 4S to the right (Figure 2), and-this movement of the arm 48, through the link connection 49', causes the carriage to travel inmoved from the treadle 44 it is obvious that the operation ofthe parts will be reversed, I so that the door will be lowered and the carriage moved back-tol its positionffor feeding in the next charge of glassware.

As the shelves or leer pans are fixed to the links of the conveyer chains, it is apparent that some means must be provided for shifting the trays ofglassware from the downward run of the conveyerto the upward `run thereof` and the means bywhich this is accomplished will. now be described.l

News for sha/'tang the trays" from the (low/nupward r @bard run of the omweg/er to the Mm thereof.,

It ist-hus apparent that as the rod 45 is As soon as the pressure is relever construe position.

conveyor shelvesa thereby `ward run oi the conveyer.

end oi this shalt is a downwardly ente' arin :Tiri and these arnis are pivotallli nected to the pusher' rods ai by means the links 591 "he shai't is conntertiai-` fil b j i we` 'ed arm oil. ne ot the arnis 58 is in the 'for i eranli ever. and the arm ill e lever is pivotallgY conneciei` di as eiairlv shown i' Figures i The link {Si} is pivotalij.' connewtei lund to 'the arm o, lie-l en the bell ill) cranl l mounted ou a stub sh: lll l.. nf-

iv fii i 'i nei xaine. inie Mini (nix. i iii` ifi-:ann lever, indi 'ated by nunierai ofi can .ries a roller ii which is received in a can groove n.7 provided in the nieniher il' which ca the. in'cvioiislv describei'l lani track l5: the 'two cams being lo'ated on oppos i'e oit the nieinher il. rhe cani `groove is shown in figure 2in two oi'its posiken linesj and the other posiiioi being' heated in light dash :ind dot lin if' `he cani groove' (5T niiist he ot such c iin' that it will canse one i'ei'iproeation 1 pusher during' a complete revolution. c' 1 cani. and. of course. that portion ot the can groove which -aiises the reciproca tion niiist be so located tl at the reciprocatioi will occur while 7the conveyor at rest and lockedu ieii-rrino' te Figure the linger Q9 just ei erine one of the i'adial slots '2G ot the dislra and hence the conveyor is just lieo'inningi' to move. During this movement tl. oller (So simply rides in the Aconcentric poition of -the cani groove. so that. no motion is imparted to the bell crank lever. lroni an inspection ot' the cani groove (ST it obvious tl at the roller (3G will continue in il e concentric `groove until after 'the fin- `eer ill has passed clear otthe radial slotj whereupon the conveyor is locked against tiirther movement. During;i this period oi, rest the eani continues to rotate` ot' course, and the roller passes through the irregular portion ot' the am groove, whereby the roller 36 and arm 65 are moved tothe right .(lie'ure to the position shownA in dot andwi'lasli lines, and then back` to normal the oilie arm` (53 ot the hell c 'ank lever is lifted` andythrougjh the link Connection (52, the. arni'Gl, of the bell crank lever iixed to the shai't 5T is also lifted. -ythis movement o'i the arin (il auses thearnis 58 to swing' inwardlya and, through the link connection 5S), thepusher is forced across one of the pushing the tray 32E/over onto its opposite sheltl on the up` t will beiinderstood, ot' Course, that the operation is merely reversed when the roller 6G and' arni are nioved te the l; ir so that the. pusher .is withdrawn l 'eniains at restv until the coiivcyer inotli-er ste l* l in the s being' rred to ihi, tl

heat oi' the lceizy and to ass-if: in accomL ino' this result the top and bottoni ol the le are sealed, lt 'course` the invention is no*4 limited to the siviecilic. means iisti'aei, rie ni, but in die prei'ei'red ein liinent the invention spring' essedseal plates are vided, the plates heing held against edges of the leer pms or shelvest and 'ther bjv preventing', to a large dciree. the pas i oiE air to or 'troni the leer. 'lie ei'instriiition ot the sealing mean is the sain l at 'ilio top and bottoni or the leer, and i sl mi; the general arran ement, Figure, 1i showshe conitrnci'ion more in i'letail. sealing' plates are indicated by ninner". and these plates are carried hv rods which are slidably mounted in the leer walls; and are pressed inwardlyr by means of coil springs Ti. (liitwai'dly extending' iiangres i'i and .73 are provided at the'top and bottoni, respectively, of the seal plaies (S9 for preventingthe passage oi air between the seal plates and the leer walls, clearly shown in Figure (l. lt to be noted here that three of the shelves l0 are positioned between the sealing?T walls when the conveyer is stationary, thereby providing two dead air spaces to further aid in the conservation ot' the leerheat. During the movement of the `conveyor there will always be at least two of the shelves between the sealing walls, and thus there is always one dead air space provided. At the liront and back of the leer theseal plate will be in a single piece extending)T the entire'width of the leer; but, on account ot the conveyer chains, it will be. understood that it will be necessary to divide the side plates into two sections. For sealing the space around the conveyer 'Chains' a pair off tiltable closure members is employed` as illustrated in Fig/ii es 8 and 9.` The tiltableclosure member-sfere indicated by numerals 74:, and they are normallyheld in a. horizon: tal position by means of Aweighted arms T5, It is obvious from an inspection of Figures 8 and 9 that as the chains inove downwardly step by step the rollers 8, oarriedby the chains, will tilt the closure members to open position, and as soon as the roller has passed the closure members will-return totheir nor mal position, thus closing the passage until the next movementqo'f the conveyer.

For the purpose of controlling the tempperature of the lower portion of the leer, the front and rear walls are provided with a series of openings, indicated by numeral 76',-

and the admission of air through these open# ings is controlled by means of a sliding- .damper 77 provided with a series of openings '78.. In place of this construction 'any other desired means may be employed; and, if preferred, the. air admission means may be thermostaticall-y controlled.

The construction' of. the various elements of the leer and their operation have been described in detail, and the `general operation of the entire apparatus will now be bricfiy described.

The. glassware is taken from the mold or press and in'miedialely placed inthe tray. As soon as one row of glassware is on the. 'tray the operator depresses the treadle 44,

thereby raising the door 37 an'dpl'lshing theY l tray into the leer such ar distance that when the door 37 descends the row of glassware is just .behind it and inside of the leer. The

L pressure is then removed from the treadle 'cles are introduced at 'the top of the leer in and the door is lowered to closed position,

and the feeding carria,f jel is moved back toV position for feeding the next row of glass-l ware. This operation is repeated until the tray has been filled and moved entirely into the leer, where it rests on one of the yshelves or leer pans. carried bythe endless conveyer. f

40 `the-operator lifts the lever 18, thereby throwing in the clutch 13, which causes the conveyer and glassware carried thereby in the leer to be moved downwardone step in the manner hereinbefore described. l' After the .conveyer has moved one step it is locked against further;\movement, butA the member 111, carrying the cams, continuesto rot/nte until a complete revolution has been made, whereupon the clutch is automatically thrown into inoperative position. During this subsequent rota'tion of the member 14. the ycam groove' 67 functions, thereby causingthe pusher 54 to transfer the lowermost tray of glassware from the downward run of the4 55 conveyer to the' upward run-thereof, as described hereinbefore in detail. The trays of glassware are 4now carried upward by the conveyer to, al convenient point for un'aading. In this connection it is to Abe,\..r1`oted that, as both runs of the conveyer are normally loaded with glassware, the conveyer is balanced to a la'rge degree, and hence very little power is required for its operation.

I As previously mentioned hereinthe glass- Assoon'as the filled tray is within the leer ware is fed to the leer directly from the 65 mold or press, and the necessity for the intermediate oven, now in common use, is thereby eliminated, which obviously results in avery great saving. n

Each layer of hot articles that is placed in the leer has beneath it another layer of articles at only a slightly lower temperature than the firstlayer, and the heat that is ra- .diated from this lower layer functions as a baffle or barrier to prevent the rapid radia 75 .tion of heat from the upper layer. lhile I .have simply mentioned the layer directly beneath the layer last introduced, it willbe obvious that therevis awhole series of layers `below the uppermost layer, and each one of these series functions in the same manner to reduce radiation from the uppermost artiele, though, of course, the layers further removed from the uppermost layer do not, exert this influence to the same extent as do the layers immediately beneath it. It will also^-be understood, of course,that while all ofthe ,heated articles below the uppermost layer of articles tend to prevent radiation of heat from that article, so, too, is radiation of heat from lower articles retarded by the articles below them which have a temperature only slightly lower.

It will also be understood/that as the arti'- a heated condition and slowly moved down'- wardly through the chamber after passing through the muHie, the contents of the chamber will give up their heat gradually as they 'move down and the air thus heated will rise to the top of the leer, thereby contributing to the maintenance of the temperature of the upper portion of theA chamber.

In order to properly vanneal glass ware, the articles should be graduallyl cooled from-11.35 about 950 degrees to aboutGOO degrees; and from the foregoing description it will be ap-V parent-that the temperature of the leer dis-f closed herein will naturally be the highest at the top of the leer, and that this tempera- 11,0

ture will be decreased very gradually toward the bottom of the leer.

It-is` also thus apparent that in annealing tg'lass ware in the manner' described herein very`little, if any, heat other than the resid` -ual heat of the articles is necessary. `If the articleswere introduced' vat thebottom of the leer and were carried upward, the heat given off by the article would rise to the top of the leer and consequently the articles would be discharged from the' leer stt-substantially the' same temperature at which they entered. And it isalso true that if a horizontal leer were employed the operation would be by no means the same, and there would not be the. same even distribution of heat at a graduv ally lowering temperature; and, further, it

would be necessary to supply@ large amount tion of the leerwy ln the present construction the ends of the leer are sealed, `and, furthermore, the leer pans are only slightly spaced from the walls of the leer. so tliat'it is impossible for chill ing drafts to sweep through the leer; and accordingly in the present construction the glassware is subjected to an even temperature, which is gradually decreased as the ware descends, thereby producing the best annealing effect.

From the foregoing it will be apparent that the leer construction described herein. will result in a great saving of floor space; that it will handle the glassware in a most efficient inannergthat it will require a minimum of auxiliary heat; and that the glassware will be annealed under conditions producing the best results.

lVliatr l claim as new and desire to secure by Letters Patent is:

l, in ay verticahleer fo annealing glassware, an endless conveyor having one run thereof adapted to move downwardly through the leer, a plurality of leer pans cairied by the conveyer, and means cooperating with the leer pans for sealing one end ofthe leer.

2. ln a verticalr leer for annealing glassware, an endless conveyer having one run thereof adapted to 'move downwardly through the-leer, a plurality of leer pans carried by' the conveyer, and means cooperatingwith the leer pans to `form a. substantial seal at the upper end of the leer.

3. ln av vertical leer for. annealing glassware, an endless conveyer having one runy thereof adapted to move downwardly through the leer, a plurality of leer pans carried by the conveyer, and means cooperating with the leer pans to form a substantial seal atthe top and bottom of the leer.

4. In a vertical leer, for annealing glassware, an-endless conveyer for carrying the glassware downwardly through 'the leer, said conveyer passing into the leer through the top thereof and out of the leer through the bottonr thereof and means forr forming a 1substantial seal at the 'top and bottom of the eer.

c 5. 4In a vertical leer for annealing glassware` an endless conveyer for carrying the glassware downwardly through the leer, said conveyer passing into the leer through the top thereof and out ofthe leer through the bottom thereof means for forming a substantial seal. at the top and bottom of the leer, and means `for admitting air to the lower portion of the leer.

G. ln a leer for annealing glassware, an endless conveyer adapted to\ move through the leer, a plurality of leer pans carricdby the conveyer, and spring-pressed plates engaging the pans at one end of the-leer,"

with the leer pans to form a substantial seal at one end of the leer, the construction and arrangement being such that at least two of the leer pans will be within the 'sealing means at all times, whereby a dead air space is formed.

9. In a vertical leer for annealing glassware, anendless conveyer having one riinH only thereof adapted to. move through the leer, and substantially a Geneva-stop mechanism 'for moving the coiiveyei step by step l and locking the conveyer during its periods of-rest. y

"10. ln a leer foi-annealing glassware, an endless conveyer having one.v run only thereof adapted to move through the leer, a disk operatively associated with one of the conveyer shafts, said disk being provided with a plurality of radial-slots and peripheral grooves, a shaft, means carried by said shaft to engage in oneof the radial slots to rotate the disk one step, and means also carried by saidsliaft for engaging one of the peripheral grooves to lock the disk during its period of rest.

l1. A leer, an endless conveyer for carrying articles through the leer,- means for' operating the Iconveyer step by step, said means including a rotary member, a motor for operating the rotary member, -a clutch interposed between the motor and rotary member, means for throwing the clutch into operative position, and means for automatically throwing the clutch into inoperative position lafter a complete revolution of the rotary member. y

l2. A leer, an endless conveyer for carrying articles through the leer, means foi operating the conveyer step by step, said means'including a rotary member, a 4motor downwardly ics for operating therotary member, a clutch l yoperative position, a cam for holding the clutch in operative position during a complete revolution of 'therotary member, 'and means for throwing the clutch into inoperative position at .the end of a complete revolution of the rotary member.A

13. In a vertical leer for annealing glass-l ware,van endless conveyor havingone run only thereof adapted to-move through the,l

thereof leer, a plurality of leer pans` carried by the conveyer, and reciprocating vmeans for re-l kof the conveyer to the upward run thereof.

15. In a vertical leer for annealing glassware, an endlessconveyer. having one run thereof adaptedV to -move downwardly through the leer, a plurality of leer pans carried by the conveyer,` trays adapted to be 25 i placedon the leer pans, and means for shifting the trays from the downward run of the conveyer to the upward run thereof.

16. In a vertical leer for annealing glassware, an'endless conveyer liavi'ng one run thereof adapted to move downwardly through the leer, means for shifting uthe glassware from the downward run of the conveyer to the upward run thereof, and means located between the 'runs of the conveyer for supporting-the glassware during its transfer.

17. In a vertical leer for annealing glassware'1 'an endless conveyer having one Irun thereof adapted to move through the leer, means for operating the conveyer'v step by step,- means for shifting downwardly 'l the glassware .from the downwardv run of rest of the conveyer.

the conveyer'to the upward run thereof,said means being operabledur'ing `the periods of .181A Ina yertical leer for annealing glass` ware, an endless conveyer having one` run thereof adapted to move downwardly through the leer, a rotary member for oper- 'atingthe conveyer step by step, a cam car 'rie'd bythe rotary member, 'a pusher .fonv

vremovingA the glassware from the downward yrun ofthe conveyer, and means associated with `the cam for operating the pusher dur-` ing theperiod ofrest of the conveyer.

19. In a vertical leer for annealing glassware, an endless conveyer having one run thereof adapted to movedownwardly through the leer, arotary member for oper* ating the` conveyer step by ste a cam carried by the rotary member, me ns associated with said camftostop the rotation of the memberwat the end of a complete revolution, a second cam carried by the rotary member, a pusherfor removingv the glasswareV from the downward run of the conveyer, and means associated with the second mentloned `cam for operating the pusher duringV the'- v period of rest of the conveyer.A

20'.y In a leer for annealing glassware, an endless conveyer for carrying glasswarethroughlthe leer, an inlet and` an. loutlet for the-conveyer atthe `ends of the leer, an -I opening in the side of the leer, .transferring mechanism by which trays of'glassware are transferred to the said conveyer through the said opening, a closure for said opening, and means for timing the operationof said closure vand said transferring mechanism.

21. In a leer for annealing glassware, an endless conveyer for carrying glassware throughtheleer, the leer being provided VVwith a mouth, a door forclosing the mouth,

meansfor feeding glasswareI into the leer step by step, and 'means for operating the door and feeding means in proper seguence.V

22. In a vertical leer for annealingV glassware, an endlessconveyer having one runl thereofadapted to move downwardly through theleer, the leer being provided Vwith a mou-th, a door for closing said mouth,

'a frame adjacent the mouth, a tray for re` ceiving the glassware and {adapt-ed to rest on the frame, means for raising and lowering the door, and means operatively connected with the door-operating means for moving the tray step by' step into the leer.

23. In Yavertical leer for annealing glassware, an endless conveyerr having one Irun thereof adapted to move downwardly through the leer, the leer being provided l with a mouth, adoor for closing. the mouth, means for] operati-Dg "the door, means for ii'eedmgfglasswarl through` the mouth 4to `the conveyer, and Sa lost-motion connection between the door-operating means and the feeding -means whereby the parts operate 1n proper sequence.

k24. a vertical .leer for annealing glassware, an endless conveyer having one run ythereof adapted to move downwardly through the leer, theleer being provided with a mouth,a frame adjacent the\mouth,a tray adapted torest'on the frame'` a carriage mounted. for .1 ieciiprocation in the frame, means for reciprocating the carriage, and a series of pivotally mounted dogs for engag ing the trayto' move Athe same in to the .leei` step by step.

25. In a .vertical leer for annealing glassware, an endless conveyer having one run thereof adapted to move downwardly through the leer', means for moving the conveyer step by step, means for feeding glasslware to the downward run of the conveyer,

and means for shifting the glassware from the downward run of the conveyer to the up#` ward run thereof. 26. In a` vertical leer for annealing glassware, an .endless conveyer having. one

lieleof' to inove clownrun n'zunlly lnougli 'alle leen-leer puns carried liv the vonvoyei; means (2o-operating With lie lvm' nuns io 'Foi-1u a seul it the 'top und bottoni or ille leer ineans foy feeding glass- 4wn'e to fue leer naine, und ineens for shiftadapted ilu n'lusswui'e iiljom the down 'ard run of the voneyei io ille upward iuu tlioreomove through the. leer, a` muile foi heating the upper portion of alle leeigund ineens for sealing the upperenfl of the leer.

QS. In a vertical leer for annealing glussmue, an endless conveyor adapted to inove through the leer, a. niulle for heating lleuppei portion oit ille leer, ille exterior ol' Suid lnule being;` insulated, und means for sealing the top und bottoni of the leer.

RGBERT GOOD.

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