US1323515A - Manufaettibe of cast-iron pipe - Google Patents

Description

38 I a? q m ym W. E. WOOD.

MANUFACTURE OF CAST IRON PIPE.

APPLICATION FILED FEB. 4.1918.

1 ,32 3 ,5 1 5 Patented Dec. 2, 1919.

6 SHEETS-SHEET 1.

W. E. WOOD.

MANUFACTURE OF CAST IRON PIP E.

APPLICATION FILED FEB. 4. I918.

1,323,515. Patented Dec. 1919.

6 SHEETS-SHEET 2.

M f'iwenaaw:

j/ZZZz'a m if 7/0006 W. E. WOOD.

MANUFACTURE OF CAST IRON PIPE.

APPLICATION mu) FEB. 4. 191B.

1 ,323,5 1 5. Patented D00. 2, 1919.

6SHEETS-SHEET 3.

10&

W. E. WOOD.

MANUFACTURE OF CAST IRON PIPE.

APPLICATION HLED FEB. 4. 191B.

1 ,32 3,5 l 5 Patented Dec. 2, 1919.

6SHEETSSHEET 4.

- fn enm jfi'llz'am [Wood W. E. WOOD.

MANUFACTURE OF CASI IRON PIPE.

APPLICATION mu) FEEL-1. mu.

1 ,329355 1 5. Patented D00. 1,,

(a SHEETS---SHEET [rew rd (07*:

W. E. WOOD.

MANUFACTURE OF CAST IRON PIPE.

APPLICATION F!LED FEB. 4 1918.

1 ,323,5 1 5 Patented D00. 2, 1919.

GSHEETS-SHEET 6- UNITED STATES l TEN z-QFF QE.

- {WILLIAM WOOl), or mmeem rtmiiols.

'mANUrA'crUaE OF cns'r-m'on PIPE. a a 4 if i .j ipplication-llieil lebuiary. I cat knownthat I,-,\VILLIA;1 ,lYoom'a c t zen of .the United States, and residentjo'f lVihnette, countyof Cook. and State of Illinnis have invented. certain new. and ,useful lmp rmfemcnts 1n the Manufacture of Cast},

the subject of this application be'ingm'ore I especially concerned with the use of atraveling mold support, moving in a circuit, and the use of molten metal principally'supplied from smelting furnaces without cooling and remelting.

In the accompanying drawings wherein some of the features of well known con struction are only conventionally represented; y A

Figure 1 is a general ground plan showing one arrangement of a foundry, with its associated buildings and tracks, which may be employed in practising the improved method or process provided by the invention;

Fig. 2 is a second floor plan of the foundry illustrated in Fig. 1;

Fig. 3 is asectional view, the sect onal plane being indicated by the lines 3 -3 on Figs. 1 and 2; I

Fig. 4 is a detail plan view showing one of the traveling mold supports illustrated in Figs. 1 and 2 with an associated crane; i Figs. 5, 6 and 7 are sectional views taken on the lines 5-5, 6-6 and 7--'( respectively of Fig. 4; Fig. 5 being a detail view drawn upon an enlarged scale; I.

Figs. 8 and 9 are side and end elevations respectively of apparatus which may be employed for making the cores; and

s Fig. 10 is a detail plan view of one of the core strikes.

i A convenient arrangement of the improved foundry is generally represented at -25 on Fig. 1. As shown, the foundry is equipped witha seriesof the traveling mold supports 26, 27, 28, 29, arranged to accomi Speciiication ot iie tti-s Patent. 5 Patented Dec ",2; 191 9.

4. 11918,'Seria1gNo.- 2l5,298...

iinodate flasl:s,"as 3(l (Fig. 4) .forpipeoftlie idifferent but more usual sizes. ,refer ably the foundry is also equipped with stationary.

i-benches 31,-for .receiving thelarger pipe flasks (not shown) and it includes, in addition, a separate floor 32where the so-called. specials maybe molded and cast in the usual way. In, accordance with the, pro

ferred plamgt-he,foundrv 25 is located immediately adjacent the blast furnaces, as 33, I 34, andthe complete plant further comprises a gas washer 35,.po\\'er house 36, shop 37, fol-making and spooling the hay rope, storage sheds 38, 39, for the mold blacking and hay,'and clean-out sheds 40, where the removalof the cores and other finishing operations may be performed, in any preferred manner.

blast furnaces, as 33, 34, withoutremelting, thefoundry25 is preferably equipped with mixers, as 41. These are desirably located upon the gro'und floor, as 42, where they are served by a track 43 leading directly from the blast furnaces. The mixers 41 may be of usual construction. each having capacity to retain suiiicient moltenmetal for securing substantial uniformity by mixing together a plurality of separate tappings from the blast furnaces and occasional tappings from 'cupolas, two of which are indicated at 44, as may be required from time to time for correcting the metal. convenientlydiandledin a track 45, preferably arranged in a circuit to serve all ofthe traveling mold supports, 26, 27,28, 29, the benches-3l and the specials floor. 32. To permit of the use of melted pig iron for the. making ofcastings, as in the case of a temporary failure of the blast furnace metal, a

branch 110 of the track 45 extends in front .of the cnpolas 14.

As it is proposed to use metal from the The mixer metal is The core ovens 46am principally located uponthes'econd floor, ,as 46 (Fig. 3) although the ,drawings. indicate two additional sets of core ovens 48,49, on the ground floor 42. These last mentioned sets of core. ovens may be used exclusively for the so-called head cores (not shown) and one of the'sets, as 49 serves only the larger flasks (not shown) on the benches 31. When this arrangement is employed, a set of mud mills 50 for mixing the core materials are also located ,on the roiindfioor 42. shown, each two ad acent mud mills are served by a separate jib crane 51, and the mixed core materials from all of the mill are handled on a track 52. The track 52 is conveniently also used for transporting such other supplies as may be required both on the first and second'floors 42, 47,' of the main foundry 25 and on the specials floor 32. This track accordingly leads from the storage sheds 38, 39, and shop 37, through the main part of the foundry .25 adjacent the mud mills 51 where it connects with each a plurality of hoists 53 delivering to the second floor 47, and it also connects with a part of the track 45 on the specials floor 32. A branch 54 of the track 52 extends to the core ovens 48. track 55 connects with each of the, hoists 53 and extends throughout the length of the foundry, while branches 109 from this track extend'adjacent each of the traveling mold supports 26, 27, 28, 29, and the benches 31, all of which, though located on the first 'fioor 42 are ex .iosed throu h o enin s as 99. 100, in the second floor.

The pipe cores are most conveniently made upon a movable platform, as 56, or 57 (Fig. '2), hereinafter referred to as the core car. As shown, two of these core cars are provided and both move upon a track 58.

This track extends immediately in front of the core ovens 46, adjacent to and parallel with track 55. The core cars. as 56, 57, are thereby conveniently supplied with the spooled hay rope and other cOle making materials delivered to the second floor 47 by the hoists 53, in any position of the cars along the track 58.

The core car 56 is illustrated in detail in Figs. 8 and 9. As this core car is more particularly intended for making cores for the medium and smaller sizes of pipe it is equipped with two core strikes 59, 60, one adjacent each end of the car. It is also equipped with two sets of mud boxes 61, one for serving each of the core strikes 59, 60. The core car 57 may be of the same construction as the core car 56 but it is preferably provided with a single core strike 62 of large size and with ,a single set of mud boxes 63.

For convenience in handling the trucks, as 64, (Fig. 8) upon which the cores are baked, the core car 56 carries a transverse track upon which one of these trucks may be held. The core car 57 is equipped with a similar track 107 of wider gage for receiving a larger truck (not shown). In the case of the car 56, the transverse track 65 is located centrally between the two core strikes 59, 60. Each truck 64 is equipped with racks 66 for containing a plurality of cores, as 67, of a given size, and the truck 64 stands upon the corresponding track 65 while a quantity of the cores contained in the rack 66 are successively transferred to the adja- On the second floor 47, a

cent core strike 59, 60, for manipulation therein.

For convenience in handling the cores, as 67, in transferring them to the core strikes 59 60 or 62 and rcturnimr them to the rack 70 66 each" of the core cars 56, 57, is prefer ably equipped with an over-head hoist 70. As shown, this over-head hoist is provided with wheels 71 at each side and these wheels run upon elevated rails 72 carried by the 75 corresponding car, as 56. The hoist may thus be moved from end to end of the car. The hoist 70 also comprises a pair of connected winding drums 73, one at each side,

and two hoisting chains 7 4, one wound upon each of the drums 73. Each chain 74 terminates in a. hook 75 adapted to be entered in one end of the usual foraminous tubular core bar, as 7 6, upon which each. of the cores, as 67, is formed. The construction of the core car, as 56, is not specifically claimed herein for the reason that it forms the subject of my copending application for )atent on core making apparatus.

l\ ten the cores contained in a truck rack 66 are ready for baking, the core car, as 56, carrying the corresponding truck 64 is moved on the track 58 to a position directly in front of one of the ovens 46 and the truck 64 is transferred from the car into the oven, as upon track 108 provided for that purpose. To permitall of the sizes of pipe cores to be baked in any of the ovens 46, each of these ovens is preferably equipped with two of the tracks 108. Two o' t have been previously supplied with both the 110 first and second coats, the car 56 or 57 is now used for carrying the truck 64 to a position where it may be transferred to one of a series of stationary tracks 68 or 69,

upon which the truck stands during the rc- 11b moval of the finished cores therefrom.

While cores for pipe of the smaller sizes are readily unloaded from the truck, as 64,

by hand, the handling of some of the cores,

as also the delivery of core making material v onto the core cars 56, 57, is more conveniently performed if an over-head traveling crane, as 77, is provided. As shown, this crane runs throughout the length of the main part of the foundry 25 and is of sutlicient length to extend entirely over the tracks 55,

58, the hoist 53 and also for some distance over the unloading tracks 68, 69.

Except in the making of pipe of the very largest sizes the operations of baking the When the cores are to be 105 ni'olds, setting the cores therein and pouring the castings, are preferably all performed while the corresponding flasks, as 30, alb carried by one of the traveling inoldsupports 26,27, 28, 29. Iii the making of large pipe, the corresponding operations are performed while the flasks (not shown) are mounted on the hittiClltS 3 1, The traveling meld supports 26, 27, 2s,- 29, may be of like construction, except that they are differently pious-tinnedmrsh isoi-ting flasks of diffei'eiit-sizes; For this reason only one of these supports, as 27, is illustrated in detail. As most clearly shown inFi'gs, 6 and 7; the trzii'eliiig mold support 27 principally comprises an annular frame 78 and this frame completely encircles a central stationai'y pier 79. A simple and convenient ineaiis of carrying the flasks is provided in the fo'i ii'i of a continuous shelf 80 which proje'cts oiiti'vardl'y from the lower edge of the frame 7 8 and the flasks, as 30, (Figs. 3, 4 and 5) stahd'upoii this shelf, preferably withtho i'n'olds, as 90, 91, contained tl ereiii,,registerin'g jt'ith apertures 89, 89*, formed in the sheli. If the parts are so proportioned that the. frame 78 and pier 7 9 reach to the level of the second floor, -17, ivhile the upper ends (if the flasks 30, when standing on the shelf 80,,pi'oject somewhat above'this level, theflasks are rendered accessible for setting the cores, gating and pouring in the same man her as if held in a pit, except that during all of these operations the flasks partake of the movement'of the frame 78. a For supporting the frame 78 a circular track 81 is provided. As shown, this track extends under the frame and truck wheels 82, mounted against the under side of the frame, run on the track. As it is proposed that. all of the operations incident to the production of cast iron pipe shall proceed continuously, the frame- 78 preferably rcvolves continuously but at such a ratethat the baking of the molds, the setting of the cores, the gating, pouring and cooling of the castings may be accomplished during one revolution.

The driving of the frame 78 is conveib iently accomplished by chamberin'g the pier 79 and mounting a motor S3an'd speed 're- 4 dii'ciiig' gears 84: Within the chainher of the pier. As shown, the speed reduciiig'gears 84 drive the two ends of a sectional shaft85 in opposite directions and this shaft extends horizontally through the pier and is eqi'iippjed at its opposite ends with oppositely turning pinions 86, 87, which mesh with an annular gear rack 88 carried by the frame 78.

The baking of the pipe molds may be accomplished by any desired form of heater adapted to admit heat to the molds, as 90,91. through the apertures 89, 89, of the shelf 80 during, a substantial part of the revoluuse of the frame 8. The heater shoiivnin the drawings comprises a plurality of sta tiohai-y, gas burners 92 located below .the

rati ed in curved aws, conforming ta the pathsot movement of the h eitu re'S s9 and so. when this form .of heater i sfieihpleyed, provision is 'ii-feiialily niadefor s eeting shelf 80 at one side of the pier 79 and firthe hu -e h-dm ich hunter, 92 skeet when hire of menisci-tines s9 aiijse is sass rig oier the same during the ievoliitio'ii hi the frame 78. As shown, each hiii'iiei' 92' is equip ed with a rotating gas t'hlife 93 and a series of contact anneal depend; from he shelf .80 J

for -matin the valve 93 of eac biii'her by ontact ititli tliefctiifresponding vans s iii; If the cont'z'rct at'his 94 are spaced along he Shelf so in a cordance with the .spacing of the flasks, $30, oh the shelf, each gas valve 93 will e iiltei-i'iately apee'd and close-dies direetihg a flame from the, correspondin buriie'r 92 into'the maids 90, 61 91, as the ing; the i-efiidliition oi the frame 78, and ,for checking the flaine from the bii'rner, when it would pthei-wise merely impinge theiihde'rsideof theshelt between adjacent aper- -fron'i each traveling mold support, as 27,

shaking out the castings, depositing the empty flasks on the correspondln molding machine 95 and returning the asks with netv molds; as 90, 91, formed therein, to the traveling mold support.

As the flasks 30 may be of \i'ell known construction, the castings may be shaken oilt andthe, ew inol'cls produced in accordance withtheusual practice. As shown, a set of skids 97 (Figs, 2 aii(l 3) upoiiivhi'ch the castings are deposited by the shake out, extend into the clean-out sheds 40 from" a adjacent each of the traveling mold supports 26, 27 28, 29, 'witliin the raiige of the corresponding crime 96. If desired a coiiveyer 98 m, eiztend .iinderall of the skids 97 for collecting the molding sand 'wl i'cli falls froin the flasks during the shake out, It will be understood that each flask 30 remains upon one of the traveling mold supports, its 27, throughout nearly, a complete revolution of the same and that it is only removed as it approaches the corresponding skids 97, its place upon the traveling support being immediately thereafter 55 erably, accom lished with the use filled with a previously removed flask which has been supplied with new molds while on the adjacent molding bench 95.

'-While the setting of the cores, as 67, and 5 the pouring of the castings will usually be accomplished in each flask 30 during its travel through"a' relatively short range, preferably at theremote side of the corre sponding pier 79 from the shake out crane 96, afmovable crane generally designated 101, is desirablymounted-upon each pier for servi'ngany part of the associated traveling mold support 26, 27,, 28,'or 29,.as also any 7 part of the top of the pier and adjacent parts of the second floor 47. For the purpose of illustrating the present invention the crane 101 is shown as having the form of a revolving gaun trce, turning on a circu. lar track 102. The track 102. is mounted on the pier 79v while the crane girders 103 extend diametrically over the pier and for' a substantial distance beyond the same at each end. The turning of the crane upon the track 102 thereby enables the hpist 104,,run- 26 ning on the girders 103, to command any part of the top of the pier 79 and a considerable area beyond the same in any direction. a a To facilitate the transfer of largelobjects, 80 as for example, a ladleof hot metal (not shown), directly from one side of the pier 79 to the other, the columns, as 105, which support the crane girders 103, slope outwardly to provide a wide space between 85 them through whicha ladle or the like maybe carried. As this method of operating the crane will not permit of the use of ,bracing between the corresponding columns 105 supporting the two 'rders 103, except near 40 the lower ends of t e columns, the frame work of'the crane is braced by connecting these columns at their upper ends 'with yokes 106 which arch over the girders 103. At their lower endsathe columns 105 are equipped-with flanged wheels 111 which run 11 on the circular track-102.

Alt ough the movement of each traveling mold support, as'27, is uite slow, it is believed tobe desirable t at this movement should not be interrupted ,at any time. The lowering of the cores, as 67 (Fig.3) into the molds and the pouringof the castings are accordingly to proceed with the flasks 30in motion. As each of these operations is nift e hoist 104 of tie guantree crane 103, provision is advisably made for-causing the crane to partake of the movement of the correspondin traveling mold support, as 27, as

by coup ing the crane to the revolving frame 78. For this purpose, the revolving frame 78 may be provided with a continuous upstanding flange 112 (Fig. 6) and the frame of the crane 101 is supplied with two 66 oppositely positioned sets of clamping jaws arms 117 of the two jaws of each set are slidingly secured against the under side of the frame 115. \Vhen this form of construction is employed, a foot pedal 118, reaching through the platform 110 may be employed for compressing the clamping jaws 113, 114, of both sets upon the flange 112. To this end, a bell crank lever 119 is pivotally connected with the arm 117 of one of the jaws 113 and one arm of this lever is connected with the stem of the foot pedal 118 while the other arm of the lever bears against the end of the arm 117 of the companion jaw 114. The jaws 113, 114, of the other set are operated by a lever 120 and a link 121 connecting this lever with the bell crank lever 119. The lever 120 is pivotally mounted upon the arm 117 of-the corresponding jaw 113 and bears against the inner end of the arm 117 of the companion jaw 114.

Movement of the gauntree crane 101 upon the circular track 102, otherwise than by coupling the crane to the revolving frame 78, is preferably accomplished by driving the wheels 111 with an electric motor 122. For convenience in operating the crane the controller 123 for the motor 122 may be located on the platform 116 adjacent the foot pedal 118. The conductors, as 124, for supplying current to the motor 122, pass throu h a central opening 125 in the top of 105 the pier 79, where a swiveled connector 126 is provided to accommodate the conductors to the revolution of the crane upon the circular track 102. Should it be desired to lock the crane against angular movement in any position, a circular upright stationary flange 127, similar to the flange 112 on the revo ving frame 78, may be mounted on the pier 79. \Vhen such a. flange is provided, the crane 101 is desirably equipped with ad- 115 ditional clamping jaws 128, 129, similar to the clamping jaws 113, 114, and adapted to be operated by a foot pedal 130 for gripping the flange 127..in exactly the same manner that the jaws 113, 114 are operated by tlzlig foot pedal 118 for gripping the flange For setting the pipe cores in the molds, as 90, 91, contained in a flask 30, the crane attendant standing on the platform 116, by operating the crane to travel on the circular track 102, brings the hoist 104 over the cores lying on the second floor 47 where they have been unloaded from a truck 64 standing on one of the tracks 68. After lifting a pair of the cores are lowered into the flask as readily as it both the flask and crane were stationary. S milarly, for pouring the castings, the ladle (not shown) is held in the hoist 104 and the crane is coupled to the revol\'- ing frame 78 when the hoist has been brought to a suitable position with respect to the flask to be poured. As'the mixers 41 and hot metal track 45 are located on the ground floor 42, the ladies (not shown) are elevated by the hoists 104, and deposited when empty, tln-ough openings 131 in the second floor 47, one of which is provided adjacent each of the traveling mold supports, as 26, 27, 29, 29. For these operations the corresponding crane, as 101, may be held against movement on the circular track 102 by depressing the foot pedal 130.

While it is proposed to employ the same crane 101 for performing the two operations of settlng the cores and pouring the cast ings upon each of the traveling mold supports, as 26, 27, 28, 29, whereby these operations ma not )roceed at the same tlme, each operation is as nearly continuous as is re;

quired to afford a regular delivery of castings from each traveling mold support to the correspondin skids 97. Furthermore, the use of the core car, as 56, and mixers it provide a continuous supply of cores and hot metal.

It will be understood that the angular position of the flasks about the pier 79, during the pouring of the castings is se iarated a sufficient (llSttlllCG from the position of the same flasks during the setting of the pipe cores, to provide an interval for the fitting of the head cores (not shown), in the usual way, during the "travel of the mold support. On the other hand, the angular position of the flasks about thepier 79, during the pouring of the castings, is suttieiently removed from the corresponding skids 97, to

rovide a substantial interval for the coolmg of the castings in each flask during the travel of the mold support, before the flask reaches the position where it is removed from the shelf 80 by the shake-out crane'96. The benches 31. are served by a traveling crane 138 through the opening 100 in the floor 47,

the crane-way 132 extending out through the side of the building over the corresponding skids (not shown).

I claim as my invention:

1. In a foundry plant, the combination with a blast furnace and a mixer for containing a plurality of separate tappmgs from the blast furnace, of a traveling mold supporting frame moving in a circuit, molds carried by the frame, metal pouring apparatus movable with the mold frame throughout a part of its travel in the said circuit and means directly supplying the metal pouring apparatus from the mixer.

2. In a toun'dry plant, the combination with a blast furnace and a mixer for containing a plurality of separate tappings from the blast furnace, of a traveling mold supporting frame movingin acircuit, a plurality of independent tubular upright mo'lds removably supported on the saidfra'me, a heater below the mold supporting frame and registering with the bores of the said tubular molds supported thereon throughouta part of the travel of the mold frame, and metal pouring apparatus supplied from the mixer and movable with the mold frame throughoutn dill'e rent part o t its travel in the said circuit.

3. The method of nnmnfacturingcastiron pipe and the like which consists'ininiking a plurality of separate tappings of bla. 'urnace metal while in their original molten state, movine a series of pipe molds in a circuit, and Bakin themolds, setting cores therein and pouring the molds from the .mixed blast furnace tappings witnout remelting duringdiflerent parts of the travel of the molds in the said circuit.

4. The method of manufacturing cast iron pipe and the like which consists in mixing a plurality of separate tappings of blast furnacemetal while in their original molten state, maintaining a continuous travel of a series of pipe molds in a circuit, and baking the molds, setting cores therein and pouring the molds from the mixed blast furnace tappings without remelting, all of the last three mentioned operations being performed in substantially continuous succession upon adjacent molds in the series while traveling through different parts of the said circuit.

,5. The method of manufacturing cast iron pipe and the like which consists in maintaining a continuous travel of a series of pipemolds in a circuit, and baking the molds, setting cores therein and pouring the molds with molten metal, all of the last three mentioned operations being performed in substantially continuous succession upon adjacent molds in the series while travelmg'through different parts of the said circuit. I

6. The method of manufacturing cast iron pipe and the like which consists in mixing a plurality of separate tappings of ,blast furnace metal while in their original molten state, maintaining a continuous supply of molds for the articles to be cast by pings Without remelting in substantially continuous succession during their location in a iven part of the said circuit of travel.

7. %he method of preparing pipe molds and the like for casting which consists in maintaining a continuous travel of a series of mold flasks in a circuit and baking the molds and setting cores therein while the mold flasks are in motion during their travel through different parts of the said circuit 8. The method of manufacturing cast iron pipe and the like which consists in mixing a plurality of separate tappings of blast furnace metal while in their original molten state, maintaining ta continuous travel of a series of pipe molds in a circuit, and baking the molds, setting cores therein and pouring the molds from the mixed blast furnace tappings Without remelting, all of the last three mentioned operations being performed in substantially continuous succession upon adjacent molds in the series while the said molds are in motion during their travel through different parts of the said circuit.

9. They method of manufacturing cast iron pipe andthe like which consists in maintaining a continuous travel of a series of mold flasks in a circuit, baking the molds, setting cores therein and pouring the molds with molten metal, the last three mentioned operations being performed in substantially continuous succession upon adjacent molds in the series While the said molds are in motion during their travel through different parts of the said circuit.

10.The method of manufacturing cast iron pipe and the like which consists in maintaining a continuous travel of a series of pipe molds in a circuit, and baking the molds, setting cores therein and pouring the molds with molten metal, all of the last three mentioned operations being performed in substantially continuous succession upon adjacent molds in the series while the said molds are in motion during their travel through different arts of the said circuit, and the parts of the circuit where pouring and baking are accomplished being separated a substantial distance in the direction of travel of the molds to permit the cooling of the castings during the travel of the molds between said parts 11., The method of manufacturing cast iron pipe and the like which consists in mixing a plurality of separate tappings of blast furnace met-a1 while in their original molten state, maintaining a continuous travel of a series of pipemolds in a circuit,

and baking the molds, setting cores therein and pouring the molds from the mixed blast furnace tappings without remelting, all of the last three mentioned operations being performed in substantially continuous succession upon adjacent molds in the series while the said'molds are in motion during their travel through different parts of the said circuit, and the parts of the circuit Where pouring and baking are accomplished being separated a substantial distance in the direction of travel of the molds to permit the cooling of the castings during 'the'travel of the molds between said parts.

12. In a foumlry plant, in combination, a revolving frame constructed to removably support a series of separate mold flasks circumferentially arranged upon the frame, a molding platform located a one side of the frame, means for transferring the mold flasks between the frame and platform, and metal pouring apparatus movable with the frame.

13. In a foundry plant, in combination, a traveling frame constructed to removably support a series of separate mold flasks, a ladle hoist movable in a path conforming to the path of movement of the frame, and means for coupling the ladle hoist to the frame.

14. In a foundry plant, in combination, a traveling frame constructed to removably support a series of separate mold flasks, a ladle hoist movable in a path conforming to the path of movement of the frame, means for moving the ladle hoist in said path independently of the frame, and means for coupling the ladle hoist to the frame.

15. In a foundry plant, the combination with an elevated floor having an opening, an annular revolving frame supported below the said floor and extending to the floor level at the said opening, a pier supportedbelow the said floor within the annular frame and also extending to the fioor level, a series of upright. mold flasks circumferentially arranged upon the revolving frame and supported thereby, and a crane mounted on the said pier constructed to command the said mold flasks throughout the entire circumference of the revolving frame and an adjacentpart of the said floor.

16. In a foundry plant, the combination With an elevated floor having an opening, an annular rev living frame supported below the said floor and extending to the floor level at the said opening, a pier supported below the said floor Within the annular frame and also extending to the floor level, and a series of upright mold flasks circumferentially arranged upon the revolving frame and supported thereby to project above the floor level, the said pier. revolving frame and flasks substantially filling the floor opening.

17. In a foundry plant, in combination, a horizontally disposed annular revolving frame con tructed to rcmovably support a series of separate mold flasks, a pier rising within the revolving frame and substantially filling the frame opening, a. movable crane mounted on the pier constructed to command the mold flasks carried by the frame and an adjacent area beyond the frame, and means for coupling the crane to the frame.

18. In a foundry pla'nt, in combination, a horizontally disposed amlular revolving frame constructed to removably support a series of separate mold flasks, a ier rising within the revolving frame an substantially filling, the frame opening, a movable crane mounted on the pier constructed to command the mold flasks carried by the frame and an adjacent area beyond the frame, and means for moving the crane independently of the frame.

19. In a foundry plant, in combination, a horizontally disposed annular revolving frame constructed to removably support a series of separate mold flasks, a swinging crane pivotal] supported with the frame to command t e mold flasks carried by the frame and an adjacent area beyond the frame, and means for coupling the crane to the frame.

20. In a foundry plant, in combination, a horizontally disposed annular revolving frame constructed to removably support a series of separate mold flasks, a swinging crane pivotally supported with the frame to command the mold flasks carried by the frame and an adjacent area beyond the frame, and means for swinging the crane independentlv of the frame.

21. In a foundry plant, the combination with an elevated floor having an opening, core making apparatus mounted on the said floor, an annular revolving fr'ame supported below the said floor and extending to the floor level at the said opening, a ier supported below the said floor within t 1e annular frame and also extending to the floor level, a series of upright mold flasks circumferentially arranged upon the revolving frame and supported thereby, and a crane mounted on the said pier constructed to command the said mold flasks throughout the entire circumference of the revolving frame and an adjacent part of the said floor.

2:2. In a foundry plant, the combination with an elevated floor having openings, core making apparatus delivering upon the said floor adjacent an opening therein, an annular revolving frame supported below the said floor and extending to the floor level at the last mentioned opening, a pier within the annular frame also extending to the said floor level, a series of upright mold flasks circumferent-ially arranged upon the revolving frame and supported thereby, the said pier, revolving frame and flasks substantially filling the last mentioned floor opening, and a swinging crane mounted on the pier to command the said mold flasks and.

an adjacent part of the said floor including space below the floor through another of its said openings.

23. In a foundry plant, the combination with an elevated floor having openin core making apparatus delivering upon t c said floor adjacent an opening therein, an annular revolving frame supported below the said floor and extending to the floor level at the last mentioned opening, a pierwithin the annular frame also extending to the said floor level, a series of upright mold flasks circumferentially arranged upon the revolving frame and supported thereby, the said pier, revolving frame and flasks substantially filling the last mentioned floor opening, a swinging crane mounted on the pier to command the said mold flasks and an adjacent part of the said floor including space below the floor through another of its said openings, and means for coupling the crane to the frame.

24. In a foundry plant, the combination with an elevated floor having openings, core making apparatus delivering upon the said floor adjacent an opening therein, an annular revolving frame supported below the said floor and extending to the floor level at the last mentioned opening, a pier within the annular frame also. extending to the said floor level, a series of upright mold flasks cireumferentially arranged upon the revolving frame and supported thereby, the said ier, revolving frame and flasks substantially filling the last mentioned floor opening, a swinging crane mounted on the pier to command the said mold flasks and an adjacent part of the said floor including space below the floor through another of its said openings, means for swinging the crane independently of the frame, and means for coupling the crane to the frame.

25. In a foundry plant, in combination, means for maintaining a continuous travel of aseries of mold flasks through a circuit, means for baking and pourin the molds formed in the flasks during (li erent parts of their travel through the circuit and continuously operable core making apparatus dellvering the flasks at a place in their travel through the said circuit intermediate the places of operation of the baking and pouring means.

WILLIAM E. WOOD.

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