US972108A - Pipe-foundry plant. - Google Patents

Pipe-foundry plant. Download PDF

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US972108A
US972108A US52211209A US1909522112A US972108A US 972108 A US972108 A US 972108A US 52211209 A US52211209 A US 52211209A US 1909522112 A US1909522112 A US 1909522112A US 972108 A US972108 A US 972108A
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rails
track
trucks
truck
flask
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Fred Herbert
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C11/00Moulding machines characterised by the relative arrangement of the parts of same

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  • TM NORRIS rn'zns co., WASHINGTON, n. c.
  • This invention relates to pipe foundry plants.
  • the object of the invention is to provide a pipe foundry plant of simple and improved arrangement, and wherein the various steps required for the molding of pipes are carried out in consecutive order, and in a simple and expeditious manner.
  • a further object of the invention is to provide a pipe foundry plant of increased capacity with the same amount of flask equipment or less than is possible with plants heretofore equipped.
  • FIG. 1 is a plan View, illustrating a foundry plant embodying the principles of my invention
  • Fig. 2 is a view in elevation of the same, parts
  • Fig. 3 is a view in elevation, parts in longitudinal section, showing the sand elevating apparatus employed in connection with the operation of a foundry plant in accordance with my invention
  • Fig. 4 is a view in transverse section, on the line l, 4, of Fig. 1, looking in the direction of the arrows
  • Fig. 5 is a view in transverse section, on the line 5, 5, of Fig. 1, looking in the direction of the arrows
  • Fig. 1 is a plan View, illustrating a foundry plant embodying the principles of my invention
  • FIG. 2 is a view in elevation of the same, parts
  • Fig. 3 is a view in elevation, parts in longitudinal section, showing the sand elevating apparatus employed in connection with the operation of a foundry plant in accordance with my invention
  • Fig. 4 is a view in transverse section
  • Fig. 6 is a view in transverse section, on the line 6, 6, of Fig. 1, looking in the direction of the arrows
  • Fig. 7 is a view in transverse section, on the line 7, 7, of Fig. 1, looking in the direction of the arrows
  • Fig. 8 is a broken, detail view in vertical section showing a construction of drying apparatus employed in one of the steps of operation.
  • I provide one or more pairs of elevated track rails AB, supported on posts C. Upon these track rails are mounted to travel trucks D on which are suspended in vertical position the flasks in which the molding and casting operations are carried out.
  • I employ two pairs of elevated track rails A, and two palrs of elevated track rails 13.
  • transverse carriers E carried by trucks F, which operate on track rails G, placed on the flooring of the foundry and in such relation with respect to the elevated track rails as to enable the vertically suspended flasks to remain in vertical suspension when the supporting trucks D thereof are supported upon the transfer carriers E.
  • the arrangement of the transfer carriers E with relation to the track rails A and B is such as to enable the flask-supporting trucks D to be transferred from the one set of rails A to the other set of rails B at one end and back again at the other end.
  • I propose to employ hydraulic, steam or other pushing devices, indicated at H, and the cylinder J, to eflect the actuation of the transfer carrier E, carrying a flask-supporting truck D from the end of the track-rails A into position to be received upon the adjacent ends of trackrails B.
  • I provide, if desired, another automatic or power-actuated pusher K and cylinder L, by means of which the flask-supporting truck D is transferred from the transfer bogie or truck E onto the track rails B.
  • I provide a transferring or pushing device M and cylinder N, by means of which the transfer bogie or truck E, F, after receivihg a flask suspending truck D, may be pushed in transverse relation with respect to the track rails B and into position to be received upon the track rails A. hen this last point is reached an automatic or other pusher O and cylinder P may serve to effect the transfer of the flask-supporting truck from the transfer bogie onto the track-rails A.
  • I also propose to control the various pushing devices H, K, M and 0, either manually as, for instance, by the hand lever B, (see Fig. 2) or by automatic stop-devices S each arranged, at a convenient point, in the path of to be engaged by the flasks, and which, when operated, controls the associated pushing device.
  • molding machines are indicated by the reference sign 10 (see Figs. 1 and 2).
  • This molding machine may be of any preferred type of construction and arrangement of power actuated pipe molding machines, and the specific structure of the details thereof forms no part of my present invention, the one essential being that the molding should be properly accomplished. It obvious that a separate molding machine will be employed in connectionwith each pair of elevated track rails A. After the molds are properly made the trucks D carrying the flasks 11, held in vertically suspended position are advanced from the molding position, step by step through the operation of the system of pushing devices above mentioned, and other empty flasks brought up into position to receive the sand and have the mold made, as will be presently more fully explained.
  • the flasks or molds on any one line of rails are moved or advanced at each actuation of the pusher device associated with such line of rails through a distance corresponding to the stroke of the pusher device, so that at each actuation of a pusher device the flasks in front of it are advanced one step in the operation of the system, each individual flask, being moved into the identical position formerly occupied by the flask next ahead of it, where whatever operation or work was being performed on or with respect to the flask next ahead can be performed on said individual flask and the various devices employed in connection with the plant or system are so related and relatively arranged that the flasks are successively brought into proper position with respect thereto by this step by step operation.
  • a blackening composition of any desired material such as is ordinarily employed for this purpose, as, for instance, powdered coal dust, clay wash and water, is contained in a receptacle 19,
  • auxiliary spouts indicated at 18, in Fig. 5, may be .employed to direct the blackening material from the spout 17 as may be desired.
  • the flasks carrying the green molds are advanced farther, and in step by step order, along the track rails and are dried.
  • the drying operation is a most important one in the operation of pipe foundry plants, as it is necessary to thoroughly and efficiently dry the green sand mold sufiiciently to avoid the danger of explosions or destruction of the mold or pipe when the molten metal is poured into the mold in the casting operation.
  • I have shown a simple and very effective drying arrangement, (see particularly Figs. 6 and 8), wherein I propose to dry to a greater or less depth the interior surface of the green molds by the application of heat applied longitudinally through the molds and preferably from a point below the suspended molds.
  • a gas heating plant comprising gas supply pipes or boxes 20, laid beneath the elevated suspending track rails, and conveniently in parallel relation with respect thereto, and having a series of nozzles 21, with air openings 22, so as to form in effect Bunsen burners.
  • the burners 21 may be provided with removable plugs 23, which, if desired, may be graduated as to the size of the opening therethrough so as to regulate and vary the degree of heat to be obtained from the burners, as well as to accommodate them to various sizes of pipes.
  • plugs being removable, may be readily removed and re placed by others, according to the exigencies encountered.
  • I am By the arrangement of heating devices above referred to I am enabled to apply a gradually increasing heat to the interior surface of the molds as they are carried step by step from one to another of the burners as the flask supporting trucks D, are advanced along the track-rails B.
  • I am not only enabled to efiiciently, thoroughly and eifectually dry the molds, but I am also enabled to inspect the drying operation and the condition of the interior of the molds at all times and both at top and bottom, as the drying operation progresses. This latter feature is attained by reason of the flasks being suspended in vertical position from elevated tracks, thereby enabling a clear View to be obtained when desired, longitudinally through the molds from above or below.
  • the track-rails B are of suflicient length to enable the graduated and gradually applied heat to complete the drying of the mold as the suspended flasks advance step by step along said track-rails, and eventually the suspended flasks and their supporting trucks are pushed onto the transfer carrier at the opposite end of the track rail '13, from that receiving the suspending trucks. hen this point in the operation is reached the transfer carrier E, is actuated by the pushing device M into position for the flask containing the dry mold and its suspending truck D to be again received upon the track rails A.
  • the molds and their suspending trucks remain in this position until the pushing device 0, is actuated, and the actuation of said pushing device may be controlled automatically if desired, as above explained, or preferably by manually controlled devices, indicated at 2 1, (see Fig. 1), arranged adjacent the point where the molds are made or by lever R, see Fig. 2.
  • the dried molds and their containing flasks and suspending trucks are received upon the track-rails A, they are advanced in similar manner along said track rails, step by step, and while said molds, are still maintained in vertically suspended relation they successively receive the bottom or end plates 90, the cores 27 are inserted into the molds, the molten metal is poured, the core bars 33, are withdrawn, the flasks are opened, the pipes removed, and the flasks closed, these various operations being accomplished in successive order.
  • the first of these steps namely, the application of the bottom or end plates, may be accomplished by means of hydraulic, steam or other suitable power mechanism, indicated at 25 (see Fig. 2).
  • Sand heads are formed and baked at some convenient point in the plant and transported in any convenient manner to the point where they are to be applied to the lower ends of the flasks and molds.
  • I have indicated in Fig. 1 a room or shed 26, in which these sand heads are formed. They are then mounted on bottom plates which are carried by trucks 27, the latter operated on an auxiliary system of track rails 28, through an oven indicated in dotted lines at 29, and then into position for said plates to be applied and secured to the lower ends of the suspended flasks, said plates and sand heads being raised in any convenient manner, by hand or otherwise, into position to be secured to the flasks, as, for instance, by the elevating devices 25.
  • the elevating devices are retracted the empty trucks 27, are pushed along the track rails 28, (see Fig. 2), into position to again receive the bottom plates when released from the flasks after they have accomplished their purpose.
  • the trucks 27 bearing the empty bottom plates are then returned to the shed or room 26, to receive their sand heads.
  • the trucks D are advanced along the track rails A, into position to receive the .mold cores 29.
  • These mold cores are formed in some other convenient part of the foundry and are transported into position to be transferred into the mold in any convenient manner, and I have indicated track rails 30, for this purpose.
  • an elevated traveling crane 31 may be brought into requisition for the purpose of depositing the core into the mold.
  • the flask is again advanced along the track rails A, still in vertically suspended position, and is eventually brought into position to receive the molten metal. This step in the operation is indicated in Figs. 2 and 7, ladles 91, containing the molten metal being brought to the required point from cupolas at some convenient point in the plant by means of a traveling crane 32, and poured into the upper ends of the molds.
  • the trucks carry ing the flasks are advanced along the track rails A, while the metal cools and sets, the flasks being received in position, after the casting operation, for the bottom plates to be uncottered and detached from the lower ends of the flasks, where said bottom plates drop upon the empty truck 27, arranged to receive the same, as clearly indicated in F .ig. 2.
  • the core bars 33 are withdrawn upwardly from the flasks, the casting operation having been completed at this stage of the operation.
  • These core bars after being withdrawn from the flasks by suitable mechanism carried by the overhead traveling crane 32, are deposited again upon the track rails 30, and returned to the core making room of the plant.
  • the trucks supporting said flasks are advanced step by step still farther along the track rails A, and into position for the flask sections 34, and 35, to be separated or opened up, as indicated in Fig. 4, and the pipe casting indicated at 36, Fig. 2, to be withdrawn therefrom and removed.
  • the removal of the pipe casting is accomplished by means of a jib crane device indicated at 37 Fig. 2, and delivered upon track-rails 38, Fig. 1, and rolled therealong into the cleaning shed.
  • the flasks are opened up, as above described, and the pipe casting removed therefrom, the sand drops down into a sand pit 39.
  • the sand together with a fresh supply, if necessary or required, with additional moisture is dumped into a mixing tank 92, see Fig. 2, and shoveled or otherwise transferred therefrom into a hopper 40, and conveyed therefrom by a conveniently constructed conveyer, in-" dicated at 41, into position, to be elevated by an elevator 42, to a rotary sifting mill 43, and from there deposited on the sand platform 44, into position to be supplied into the flasks when brought into position for the molding operation.
  • the sand is delivered from the elevator onto the sand platform 44.
  • the sand is flaked down onto the platform any lumps thereon being broken up.
  • the platform 44 is provided with an opening 94, therethrough which is in line directly over the flask when the latter is in position to receive the sand so that all that is necessary is to shovel the flaked sand, which is free from lumps into the opening 94, through which it falls into the flask.
  • the flasks are constantly maintained in vertically suspended position throughout the various operations, they are not required to be handled or transported individually from one point to another but remain suspended upon their carrying trucks which operate on the elevated track-rail system, the trucks thus being transferred step by step, along tracks into position for the various operations to be carried out for the roduotion of the pipe castings from the initial to the final stage of production.
  • the foundry plant system embodying my invention as above set forth involves the continuous cycle of operation, not only of the flasks, bottom plates and core bars, by reason of the system of track-rails, trucks and transfer devices therefor, but also of the material employed in the various operations, such as the handling of the molding sand, and the handling of the blacking material.
  • the parts and materials have definite cycles of operation of their own, each of which coincides with its part of the cycle of the flask and mold carrying apparatus.
  • a truck In a foundry plant, a truck, elevated track-rails on which the truck operates, a flask supported upon said truck in vertically suspended position with reference to said rails, and means for advancing the truck intermittently step by step along its supporting rails.
  • a truck In a foundry plant, a truck, a flask supported thereon in vertically suspended position, elevated track-rails on which the truck operates, and means for transferring the1 truck from one to another of said trackra1 s.
  • I11 a foundry plant, a system of elevated level track-rails, trucks operating on said track rails, flasks suspended in vertical position on said trucks, and a transfer bogie for transferring the trucks from one set of said elevated track-rails to another.
  • track-rails arranged in parallel relation, a truck, a flask supported upon said truck in vertically sus pended position, means for advanc ng the truck along each pair of tracks, devlces for transferring the truck from one pair of track rails to another, and means for controlling said transferring devices.
  • pairs of trackrails arranged in parallel relation, trucks operating thereon, flasks suspended on said trucks in vertical position, means for transferring said trucks from one set of trackrails to another, and an/Iutomatic device for controlling said transferring mechanisms.
  • a truck In a foundry plant, a truck, elevated track rails on which the truck operates, said track rails having vertically moving sections, a flask supported on said truck in vertically suspended position, means for moving the truck step by step, and means for raising and lowering the track rail sections.
  • a truck In a foundry plant, a truck, track rails on which the truck operates, a flask supported on said truck in vertically suspended position, a platform arranged above the track rails, means for delivering sand to said plat-form, for delivery therefrom to the flask, and means for moving the truck along said rails.
  • a truck In a foundry plant, a truck, track rails on which said truck operates, a flask supported on the truck in vertically suspended position, a platform supported above the track rails and having an opening therethrough, means for delivering sand onto said platform, and means for moving the truck along the track rails to bring the flask into register with said opening.
  • a truck In a foundry plant, a truck, track rails on which said truck operates, a flask supported 011 the truck in vertically suspended position, a platform arranged above the path of the flask, a riddle for flaking sand onto said platform, means for delivering the sand to the riddle, and means for advancing the truck along said rails.
  • a truck In a foundry plant, a truck, elevated track rails on which said truck operates, a flask supported on the truck in vertically suspended position, a platform and a molding machine arranged, respectively above and below the track rails, said platform having an opening in line register with the molding machine, and means for moving the truck along said rails to bring the flask into register with said opening and molding machine.
  • a truck In a foundry plant, a truck, elevated track rails on which the truck operates, a flask supported on the truck in vertically suspended position, a sand head carrying truck, rails on which said last mentioned truck operates to deliver the sand head to and from the flask, said sand head truck operating for a portion of its travel in the direction of operation of the flask.
  • a truck elevated track rails on which the truck operates, a mold supported on said truck in vertically suspended position, means arranged above the mold for delivering blacking material into the upper end of the mold, a receptacle arranged below the mold to catch and retain the surplus blacking material from the mold, means for transferring the blacking material from the receptacle to the delivering means,
  • a truck In a foundry plant, a truck, elevated track rails on which the truck operates, a flask supported on the truck in vertically suspended position, a sand head carrying truck, rails on which said last mentioned truck operates, said sand head carrying truck rails being arranged below the flask truck rails, and means for raising the sand head from its carrying truck to the lower end of the flask.
  • a track system trucks operating on said track system, flasks suspended in vertical position from said trucks, devices for use in casting pipe sections, said devices being positioned at various points along said track system, and means for advancing said trucks and flasks step by step along said track system and suc cessively past said devices.
  • the combination with mold supporting devices a series of individual heating devices located below said supporting devices and delivering successively increasing heat intensities, and means for moving said mold supporting devices step by step successively over and past the individual heating devices.
  • the combination with mold supporting devices and means for moving the same through a cycle of operation, of sand head supporting de vices associated with the system, and means for moving the same through an auxiliary cycle of operation said means operating to move the.sand head supporting devices (:0- incidently with the mold supporting devices during a portion of their respective cycles of operation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)

Description

P. HERBERT. PIPE FOUNDRY .PLANT.
APPLICATION FILED OUT. 11, 1909.
972,108. Patented 0ct.4,1910.
4 SHEETSBHEET 1.
F.- HERBERT.
. PIPE FOUNDRY PLANT.
APPLICATION rum) our. 11, 1909.
Patented Oct. 4,1910.
4 SHEETS-431E111 2.
fai v it qbi f I awed] '1'! TM: NORRIS rn'zns co., WASHINGTON, n. c.
F. HERBERT. PIPE FOUNDRY PLANT.
APPLIOATION FILED OUT. 11, 1909.
- Patented 0ct.4, 1910.
4 SHEETS-SHEET 3.
wi/bwmao; i r I p 0am o c as) figif w CM w al/(W 1m: mums PETERS C0,, wAsrqmcrou, n c.
P. HERBERT. PIPE FOUNDRY 12mm. APPLICATION FILED OUT. 11, 1909.
Patented Oct. 4, 1910.
4 SHEETS-SHEET 4.
vvuewtoz rm.- NORRIS PETERS G0,, vusmnarau, n C
being in longitudinal section.
FRED HERBERT, OF COSHOCTON, OHIO.
PIPE-FOUNDRY PLANT.
Specification of Letters Patent.
Patented Oct. 4, 1910.
Application filed October 11, 1909. Serial No. 522,112.
To all whom it may concern:
Be it known that I, FRED HERBERT, a
subject of the King of Great Britain, residing at Coshocton, in the county of Coshocton, State of Ohio, have made a certain new and useful Invention in Pipe-Foundry Plants, of which the following is a specification.
This invention relates to pipe foundry plants. I
The object of the invention is to provide a pipe foundry plant of simple and improved arrangement, and wherein the various steps required for the molding of pipes are carried out in consecutive order, and in a simple and expeditious manner.
A further object of the invention is to provide a pipe foundry plant of increased capacity with the same amount of flask equipment or less than is possible with plants heretofore equipped.-
Other objects of the invention will appear more fully hereinafter.
The invention consists substantially in the construction, combination, location and arrangement, all as will be more fully hereinafter set forth, as shown in the accompanying drawings, and finally pointed out in the appended claims.
Referring to the accompanying drawings and to the various views and reference signs appearing thereon :-F igure 1 is a plan View, illustrating a foundry plant embodying the principles of my invention; Fig. 2 is a view in elevation of the same, parts Fig. 3 is a view in elevation, parts in longitudinal section, showing the sand elevating apparatus employed in connection with the operation of a foundry plant in accordance with my invention; Fig. 4 is a view in transverse section, on the line l, 4, of Fig. 1, looking in the direction of the arrows; Fig. 5 is a view in transverse section, on the line 5, 5, of Fig. 1, looking in the direction of the arrows; Fig. 6 is a view in transverse section, on the line 6, 6, of Fig. 1, looking in the direction of the arrows; Fig. 7 is a view in transverse section, on the line 7, 7, of Fig. 1, looking in the direction of the arrows, and Fig. 8 is a broken, detail view in vertical section showing a construction of drying apparatus employed in one of the steps of operation.
The same part is designated by the same reference sign wherever it occurs throughout the several views.
In the operation of manufacturing cast iron pipes as heretofore commonly carried out, the various steps in the operation have been executed at various places in the plant or foundry, the molds being made at one point, the application of the blacking to the finished molds being applied at some other point, the molds dried at still another point, and so on for the various steps of the process. This has necessitated the provision of cranes and other devices for transporting the molds, and flasks from point to point, thereby requiring a large amount of handling and the expense incident thereto, and very materially reducing the daily output of the plant. It is among the special purposes of my present invention to provide an arrangement of pipe-molding plant which enables the various steps in the operation to be accomplished and carried out continuously, step by step in consecutive order, and wherein the flasks, in which the molds are first formed and subsequently the pipes are cast, are transported in vertical position suspended from track rails arranged in convenient relation to the apparatus required for accomplishing the various steps of the molding process. I also propose to provide such a system with means for continuous step by step progression of the suspended flasks from point to point, so that the various steps of the operation may be carried out continuously, and the separate and individual handling or transportation of the flask or mold from point to point avoided.
In accordance with the principles of my invention I provide one or more pairs of elevated track rails AB, supported on posts C. Upon these track rails are mounted to travel trucks D on which are suspended in vertical position the flasks in which the molding and casting operations are carried out. In the particular form shown, to which, however, my invention as defined in the claims is not to be limited or restricted, I employ two pairs of elevated track rails A, and two palrs of elevated track rails 13. These elevated track rails are arranged in parallel relation with respect to each other, in the most convenient relation, and operating transversely thereof at their respective ends are transverse carriers E, carried by trucks F, which operate on track rails G, placed on the flooring of the foundry and in such relation with respect to the elevated track rails as to enable the vertically suspended flasks to remain in vertical suspension when the supporting trucks D thereof are supported upon the transfer carriers E. The arrangement of the transfer carriers E with relation to the track rails A and B is such as to enable the flask-supporting trucks D to be transferred from the one set of rails A to the other set of rails B at one end and back again at the other end.
If desired, and in order to enable the transfer of the flask-supporting trucks to be accomplished automatically and by power mechanism, I propose to employ hydraulic, steam or other pushing devices, indicated at H, and the cylinder J, to eflect the actuation of the transfer carrier E, carrying a flask-supporting truck D from the end of the track-rails A into position to be received upon the adjacent ends of trackrails B. At that point, I provide, if desired, another automatic or power-actuated pusher K and cylinder L, by means of which the flask-supporting truck D is transferred from the transfer bogie or truck E onto the track rails B. Similarly at the opposite ends of the elevated track-rails B, I provide a transferring or pushing device M and cylinder N, by means of which the transfer bogie or truck E, F, after receivihg a flask suspending truck D, may be pushed in transverse relation with respect to the track rails B and into position to be received upon the track rails A. hen this last point is reached an automatic or other pusher O and cylinder P may serve to effect the transfer of the flask-supporting truck from the transfer bogie onto the track-rails A. I also propose to control the various pushing devices H, K, M and 0, either manually as, for instance, by the hand lever B, (see Fig. 2) or by automatic stop-devices S each arranged, at a convenient point, in the path of to be engaged by the flasks, and which, when operated, controls the associated pushing device.
I will now describe the operation of the plant and of the various appliances employed in connection with the various steps involved in the operation, and for convenience of description and to follow out the various steps in successive order, I will commence at the point where the molds are made. It is obvious that the molds may be hand rammed or machine molded.
In the drawing I have shown molding machines. The molding machines are indicated by the reference sign 10 (see Figs. 1 and 2). This molding machine may be of any preferred type of construction and arrangement of power actuated pipe molding machines, and the specific structure of the details thereof forms no part of my present invention, the one essential being that the molding should be properly accomplished. It obvious that a separate molding machine will be employed in connectionwith each pair of elevated track rails A. After the molds are properly made the trucks D carrying the flasks 11, held in vertically suspended position are advanced from the molding position, step by step through the operation of the system of pushing devices above mentioned, and other empty flasks brought up into position to receive the sand and have the mold made, as will be presently more fully explained. By thus successively advancing the rammed molds from the molding position step by step, eventually the trucks D upon which the rammed molds and their containing flasks are vertically suspended, are pushed onto the transfer carriers E and by which, still in vertically suspended position, they are transported into position to be received on the track rails B. The next step of advancement of the flask supporting trucks is effected by the pusher K, which transfers the flask supporting trucks D onto the trackrails B. Thus the flask supporting trucks are successively advanced step by step along the track rails B, where the molds receive their coatings of blacking and are dried.
It will be seen that the flasks or molds on any one line of rails are moved or advanced at each actuation of the pusher device associated with such line of rails through a distance corresponding to the stroke of the pusher device, so that at each actuation of a pusher device the flasks in front of it are advanced one step in the operation of the system, each individual flask, being moved into the identical position formerly occupied by the flask next ahead of it, where whatever operation or work was being performed on or with respect to the flask next ahead can be performed on said individual flask and the various devices employed in connection with the plant or system are so related and relatively arranged that the flasks are successively brought into proper position with respect thereto by this step by step operation.
Referring to Fig. 5, I have shown the operation of blackening the interior surfaces of the sand molds while the latter are held vertically suspended upon their supporting trucks D. This operation is accomplished at some convenient point in the travel of the flask supporting trucks along the track rails B, and preferably in advance of the drying operation of the molds. The blackening composition, of any desired material such as is ordinarily employed for this purpose, as, for instance, powdered coal dust, clay wash and water, is contained in a receptacle 19,
mold carried in the flask which has been brought up into proper position, in any suitable or convenient manner, well known and common in the art. If two or more track rails B, are employed, so that two or more mold carrying flasks are brought into position simultaneously for the molds to be blackened, then, if desired, auxiliary spouts, indicated at 18, in Fig. 5, may be .employed to direct the blackening material from the spout 17 as may be desired. Any surplus of blackening material supplied to the molds, and any adhering loose particles of sand which may be detached by the application of the blackening material, fall into the receptacle 12, after passing through a screen 19, the small particles of sand depositing into the bottom of the receptacle 12, and the blackening material being elevated for application to other molds in the continuous operation of the plant.
From the blacking apparatus the flasks carrying the green molds are advanced farther, and in step by step order, along the track rails and are dried. The drying operation is a most important one in the operation of pipe foundry plants, as it is necessary to thoroughly and efficiently dry the green sand mold sufiiciently to avoid the danger of explosions or destruction of the mold or pipe when the molten metal is poured into the mold in the casting operation. I have shown a simple and very effective drying arrangement, (see particularly Figs. 6 and 8), wherein I propose to dry to a greater or less depth the interior surface of the green molds by the application of heat applied longitudinally through the molds and preferably from a point below the suspended molds.
Various forms of heating devices may be employed in the particular arrangement shown, to which my invention, as defined in the claims, is not to be limited or restricted. I use a gas heating plant, comprising gas supply pipes or boxes 20, laid beneath the elevated suspending track rails, and conveniently in parallel relation with respect thereto, and having a series of nozzles 21, with air openings 22, so as to form in effect Bunsen burners. The burners 21 may be provided with removable plugs 23, which, if desired, may be graduated as to the size of the opening therethrough so as to regulate and vary the degree of heat to be obtained from the burners, as well as to accommodate them to various sizes of pipes. These plugs, being removable, may be readily removed and re placed by others, according to the exigencies encountered.
By the arrangement of heating devices above referred to I am enabled to apply a gradually increasing heat to the interior surface of the molds as they are carried step by step from one to another of the burners as the flask supporting trucks D, are advanced along the track-rails B. In this manner, I am not only enabled to efiiciently, thoroughly and eifectually dry the molds, but I am also enabled to inspect the drying operation and the condition of the interior of the molds at all times and both at top and bottom, as the drying operation progresses. This latter feature is attained by reason of the flasks being suspended in vertical position from elevated tracks, thereby enabling a clear View to be obtained when desired, longitudinally through the molds from above or below.
In practice, the track-rails B, are of suflicient length to enable the graduated and gradually applied heat to complete the drying of the mold as the suspended flasks advance step by step along said track-rails, and eventually the suspended flasks and their supporting trucks are pushed onto the transfer carrier at the opposite end of the track rail '13, from that receiving the suspending trucks. hen this point in the operation is reached the transfer carrier E, is actuated by the pushing device M into position for the flask containing the dry mold and its suspending truck D to be again received upon the track rails A. The molds and their suspending trucks remain in this position until the pushing device 0, is actuated, and the actuation of said pushing device may be controlled automatically if desired, as above explained, or preferably by manually controlled devices, indicated at 2 1, (see Fig. 1), arranged adjacent the point where the molds are made or by lever R, see Fig. 2. After the dried molds and their containing flasks and suspending trucks are received upon the track-rails A, they are advanced in similar manner along said track rails, step by step, and while said molds, are still maintained in vertically suspended relation they successively receive the bottom or end plates 90, the cores 27 are inserted into the molds, the molten metal is poured, the core bars 33, are withdrawn, the flasks are opened, the pipes removed, and the flasks closed, these various operations being accomplished in successive order. The first of these steps, namely, the application of the bottom or end plates, may be accomplished by means of hydraulic, steam or other suitable power mechanism, indicated at 25 (see Fig. 2). Sand heads are formed and baked at some convenient point in the plant and transported in any convenient manner to the point where they are to be applied to the lower ends of the flasks and molds. I have indicated in Fig. 1 a room or shed 26, in which these sand heads are formed. They are then mounted on bottom plates which are carried by trucks 27, the latter operated on an auxiliary system of track rails 28, through an oven indicated in dotted lines at 29, and then into position for said plates to be applied and secured to the lower ends of the suspended flasks, said plates and sand heads being raised in any convenient manner, by hand or otherwise, into position to be secured to the flasks, as, for instance, by the elevating devices 25. Then the elevating devices are retracted the empty trucks 27, are pushed along the track rails 28, (see Fig. 2), into position to again receive the bottom plates when released from the flasks after they have accomplished their purpose. The trucks 27 bearing the empty bottom plates are then returned to the shed or room 26, to receive their sand heads. After the bottom plates, with sand heads are applied to the flasks, the trucks D, are advanced along the track rails A, into position to receive the .mold cores 29. These mold cores are formed in some other convenient part of the foundry and are transported into position to be transferred into the mold in any convenient manner, and I have indicated track rails 30, for this purpose. hen the cores are brought into position to be inserted into the mold, an elevated traveling crane 31, may be brought into requisition for the purpose of depositing the core into the mold. After the core is inserted into the mold the flask is again advanced along the track rails A, still in vertically suspended position, and is eventually brought into position to receive the molten metal. This step in the operation is indicated in Figs. 2 and 7, ladles 91, containing the molten metal being brought to the required point from cupolas at some convenient point in the plant by means of a traveling crane 32, and poured into the upper ends of the molds. After the casting operation the trucks carry ing the flasks are advanced along the track rails A, while the metal cools and sets, the flasks being received in position, after the casting operation, for the bottom plates to be uncottered and detached from the lower ends of the flasks, where said bottom plates drop upon the empty truck 27, arranged to receive the same, as clearly indicated in F .ig. 2. About the same time the core bars 33, are withdrawn upwardly from the flasks, the casting operation having been completed at this stage of the operation. These core bars, after being withdrawn from the flasks by suitable mechanism carried by the overhead traveling crane 32, are deposited again upon the track rails 30, and returned to the core making room of the plant.
After the core bars are Withdrawn and the bottom plates detached from the flasks the trucks supporting said flasks are advanced step by step still farther along the track rails A, and into position for the flask sections 34, and 35, to be separated or opened up, as indicated in Fig. 4, and the pipe casting indicated at 36, Fig. 2, to be withdrawn therefrom and removed. The removal of the pipe casting is accomplished by means of a jib crane device indicated at 37 Fig. 2, and delivered upon track-rails 38, Fig. 1, and rolled therealong into the cleaning shed.
Then the flasks are opened up, as above described, and the pipe casting removed therefrom, the sand drops down into a sand pit 39. From this sand pit the sand, together with a fresh supply, if necessary or required, with additional moisture is dumped into a mixing tank 92, see Fig. 2, and shoveled or otherwise transferred therefrom into a hopper 40, and conveyed therefrom by a conveniently constructed conveyer, in-" dicated at 41, into position, to be elevated by an elevator 42, to a rotary sifting mill 43, and from there deposited on the sand platform 44, into position to be supplied into the flasks when brought into position for the molding operation.
It will be seen that the sand is delivered from the elevator onto the sand platform 44. By employing the sifter or riddle 43, the sand is flaked down onto the platform any lumps thereon being broken up. The platform 44, is provided with an opening 94, therethrough which is in line directly over the flask when the latter is in position to receive the sand so that all that is necessary is to shovel the flaked sand, which is free from lumps into the opening 94, through which it falls into the flask. In this manner, I avoid the use or employment of hoppers from which sand is to be delivered into the flasks, and which, in practice, are a source of great annoyance by reason of the wet sand becoming caked and packed therein. It will also be seen that when the flask is in position to receive the sand, as above explained, it is also in position for the mold to be formed. Where a molding machine is employed, the truck carrying the flask, after the latter is supplied with sand, is lowered into position for the molding machine to perform its work. To accomplish this, the track rails A, are provided With sections indicated at 95, Fig. 2, which are raised and lowered by rams 96, or otherwise, the operation of which is so timed or controlled that as soon as the flask is lowered it receives the sand, and as soon as the ramming is completed the flask and supporting track rail sections are again raised into proper relation with the main track rail system. After the pipe casting has been removed from the flask, and the sand has been deposited from the flask into the sand pit, the sections 34., 35, of the flask are again closed and cottered or otherwise secured together, and the flask is again brought into position to receive the sand, to form the mold for the ramming or molding operation.
It will be observed from the foregoing description that I accomplish a continuous operation of the plant or system, the flasks are constantly maintained in vertically suspended position throughout the various operations, they are not required to be handled or transported individually from one point to another but remain suspended upon their carrying trucks which operate on the elevated track-rail system, the trucks thus being transferred step by step, along tracks into position for the various operations to be carried out for the roduotion of the pipe castings from the initial to the final stage of production.
It will also be observed that the foundry plant system embodying my invention as above set forth involves the continuous cycle of operation, not only of the flasks, bottom plates and core bars, by reason of the system of track-rails, trucks and transfer devices therefor, but also of the material employed in the various operations, such as the handling of the molding sand, and the handling of the blacking material. In each of these operations the parts and materials have definite cycles of operation of their own, each of which coincides with its part of the cycle of the flask and mold carrying apparatus.
It will be observed that I economize floor space in the foundry plant, as the elevated track rail system is compact and the cupolas, core shops, sand head shops and pipe cleaning sheds may all be conveniently grouped and arranged with reference to the elevated track system so as to enable the continuous cycles of operation to be carried out.
It will be observed that by the system above described a comparatively few flasks are capable of maintaining the plant in continuous operation since they are not required to be kept in a drying oven in large numhers and for long periods of time, and handled in large quantities as a unit of the operation, as is the common practice. On the contrary, when the molds are made the flasks are brought successively and individually into position for the various steps of the operation to be carried out continuously and this marks one of the important and valuable features of my invention.
Having now set forth the object and nature of my invention and a construction embodying the principles thereof, what I claim as new and useful and of my own invention, and desire to secure by Letters Patent 1s:
1. In a foundry plant, a truck, elevated track-rails on which the truck operates, a flask supported upon said truck in vertically suspended position with reference to said rails, and means for advancing the truck intermittently step by step along its supporting rails.
2. In a foundry plant, a truck, a flask supported thereon in vertically suspended position, elevated track-rails on which the truck operates, and means for transferring the1 truck from one to another of said trackra1 s.
3. I11 a foundry plant, a system of elevated level track-rails, trucks operating on said track rails, flasks suspended in vertical position on said trucks, and a transfer bogie for transferring the trucks from one set of said elevated track-rails to another.
4. In a foundry plant, a system of elevated track-rails, independent trucks operating on said rails, flasks suspended in vertical position upon said trucks, and means for progressing said trucks along said rails intermittently step by step.
5. In a foundry plant, a system of elevated track-rails, trucks operating on said rails, flasks supported in vertically suspended position on said trucks, means for transferring said trucks from one line of track rails to another, and means for intermittently progressing the trucks along the rails step by step. I
6. In a foundry plant the combination with mold ramming, blackening, drying sand. head plate applying, core inserting, casting, core bar withdrawing, head plate detaching, and sand delivery mechanisms, of a system of track-rails extending past said mechanisms, trucks operating on said track rails, and flasks supported upon said trucks in vertically suspended positlon.
7. In a foundry plant, and the combination with mold ramming, blackening, drying, sand head applying, core inserting,,casting, and sand supplying mechanisms, of a system of track-rails extending past said several meclmnisms, trucks operating on said track-rails, flasks carried by said trucks in vertically suspended position, and means for advancing said trucks along said track rails step by step.
8. In a foundry plant, a system of trackrails, trucks operating thereon, molds suspended in vertical position upon said trucks, means for progressing said trucks along said track-rails, and means for applying a gradually increasing drying heat to the molds.
9. In a foundry plant, a system of ele vated track rails, trucks operating thereon, molds suspended from said trucks in vertical position, drying devices, over which said trucks move in succession, to bring the vertically suspended molds successively over the successive drying devices, and means for intermittently advancing the trucks step by step along said track-rails.
10. In a foundry plant, and the combination with mold-supporting devices in which the molds are suspended in vertical. position, of drying devices arranged in succession beneath the suspended molds, and means for intermittently advancing the molds step by step over the drying devices.
11. In a foundry plant, and the combination with moldin blackening, drying, head and core setting and casting devices, of a flask, means for suspending the same in vertical position, and means for moving the sus pended flask step by step past the said several mechanisms.
12. In a foundry plant, track-rails arranged in parallel relation, a truck, a flask supported upon said truck in vertically sus pended position, means for advanc ng the truck along each pair of tracks, devlces for transferring the truck from one pair of track rails to another, and means for controlling said transferring devices.
13. In a foundry plant, pairs of trackrails arranged in parallel relation, trucks operating thereon, flasks suspended on said trucks in vertical position, means for transferring said trucks from one set of trackrails to another, and an/Iutomatic device for controlling said transferring mechanisms.
14. In a foundry plant, a system of track rails, trucks operating thereon, molds suspended in vertical position upon said trucks, means for progressing said trucks along said track rails in step by step order, and means for applying a gradually increasing drying heat to the molds.
15. In a foundry plant, a truck, elevated track rails on which the truck operates, said track rails having vertically moving sections, a flask supported on said truck in vertically suspended position, means for moving the truck step by step, and means for raising and lowering the track rail sections.
16. In a foundry plant, a truck, track rails on which the truck operates, a flask supported on said truck in vertically suspended position, a platform arranged above the track rails, means for delivering sand to said plat-form, for delivery therefrom to the flask, and means for moving the truck along said rails.
17. In a foundry plant, a truck, track rails on which said truck operates, a flask supported on the truck in vertically suspended position, a platform supported above the track rails and having an opening therethrough, means for delivering sand onto said platform, and means for moving the truck along the track rails to bring the flask into register with said opening.
18. In a foundry plant, a truck, track rails on which said truck operates, a flask supported 011 the truck in vertically suspended position, a platform arranged above the path of the flask, a riddle for flaking sand onto said platform, means for delivering the sand to the riddle, and means for advancing the truck along said rails.
19. In a foundry plant, a truck, elevated track rails on which said truck operates, a flask supported on the truck in vertically suspended position, a platform and a molding machine arranged, respectively above and below the track rails, said platform having an opening in line register with the molding machine, and means for moving the truck along said rails to bring the flask into register with said opening and molding machine.
20. In a foundry plant, a truck, elevated track rails on which the truck operates, a flask supported on the truck in vertically suspended position, a sand head carrying truck, rails on which said last mentioned truck operates to deliver the sand head to and from the flask, said sand head truck operating for a portion of its travel in the direction of operation of the flask.
21. In a foundry plant, a truck, elevated track rails on which the truck operates, a mold supported on said truck in vertically suspended position, means arranged above the mold for delivering blacking material into the upper end of the mold, a receptacle arranged below the mold to catch and retain the surplus blacking material from the mold, means for transferring the blacking material from the receptacle to the delivering means,
and means for moving the truck along the track rails.
22. In a foundry plant, a truck, elevated track rails on which the truck operates, a flask supported on the truck in vertically suspended position, a sand head carrying truck, rails on which said last mentioned truck operates, said sand head carrying truck rails being arranged below the flask truck rails, and means for raising the sand head from its carrying truck to the lower end of the flask.
23. In a foundry plant, a track system, trucks operating on said track system, flasks suspended in vertical position from said trucks, devices for use in casting pipe sections, said devices being positioned at various points along said track system, and means for advancing said trucks and flasks step by step along said track system and suc cessively past said devices.
24:. In a foundry plant, the combination with mold supporting devices, a series of individual heating devices delivering successively increasing heat intensities and means for moving the mold supporting devices successively over said heating devices.
25. In a foundry plant, the combination with mold supporting devices, a series of individual heating devices located below said supporting devices and delivering successively increasing heat intensities, and means for moving said mold supporting devices step by step successively over and past the individual heating devices.
26. In a foundry plant system, the combination with mold supporting devices and means for moving the same through a cycle of operation, of sand head supporting de vices associated with the system, and means for moving the same through an auxiliary cycle of operation, said means operating to move the.sand head supporting devices (:0- incidently with the mold supporting devices during a portion of their respective cycles of operation.
27. In a foundry plant, the combination with a track rail system, mold supporting trucks and means for moving the same along said track rail system, of an auxiliary track rail system located below the mold truck rail system, sand head supporting trucks operating on said auxiliary track system, the line of said track rail systems coinciding for a portion of the lengths thereof.
28. In a foundry plant, the combination with a track rail system, mold supporting trucks and means for moving the same along said track rail system, of an auxiliary track rail system located below the mold truck rail system, said head supporting trucks operating on said auxiliary track rails, heating devices arranged in association with said auxiliary track rail system, the line of said track rail systems coinciding for a portion of the lengths thereof.
In testimony whereof I have hereunto set my hand in the presence of the subscribing witnesses, on this 8th day of October, A. D. 1909.
FRED HERBERT.
US52211209A 1909-10-11 1909-10-11 Pipe-foundry plant. Expired - Lifetime US972108A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486388A (en) * 1944-09-23 1949-11-01 Willard C Brinton Ball casting machine
US2535656A (en) * 1948-02-16 1950-12-26 Leo E Kiedinger Apparatus for making molds
US2631342A (en) * 1948-04-02 1953-03-17 Pacific Cast Iron Pipe & Fitti Molding and casting apparatus
US2651087A (en) * 1947-05-08 1953-09-08 Harrison E Fellows Mold making machine
US2943368A (en) * 1956-02-03 1960-07-05 Renault Semi-automatic machine for the centrifugal casting of cylinder liners
US3029482A (en) * 1959-03-30 1962-04-17 Bartlett Snow Pacific Inc Mold conveying system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486388A (en) * 1944-09-23 1949-11-01 Willard C Brinton Ball casting machine
US2651087A (en) * 1947-05-08 1953-09-08 Harrison E Fellows Mold making machine
US2535656A (en) * 1948-02-16 1950-12-26 Leo E Kiedinger Apparatus for making molds
US2631342A (en) * 1948-04-02 1953-03-17 Pacific Cast Iron Pipe & Fitti Molding and casting apparatus
US2943368A (en) * 1956-02-03 1960-07-05 Renault Semi-automatic machine for the centrifugal casting of cylinder liners
US3029482A (en) * 1959-03-30 1962-04-17 Bartlett Snow Pacific Inc Mold conveying system

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