US938904A - Casting plant. - Google Patents

Description

0. W.v SHERMAN. CASTING PLANT. APPLICATION FILED JAI. 14.1905.

938,904. 0 v .Paten'td Nov 2,1909.

Eigl. 0000 19 8 ".u -i-:-::: r:.\ 18 1,9 "0

' OOOO I 2.5

' i 34 o J O Yfibzessesi I 1710911597,

0. W. SHERMAN. CASTING PLANT. nruornox FILED L14. 1005.

Patented Nov. 2, 1909.

4 BBBETS-4K2ET 2.

w sses;

v c. w. SHERMAN.

CASTING PLANT. Y APPLIOATIOI IILBI? JAN-14, 1905.

938,904. I Patented Nov.2,1909.

4 SHEETS-SHEET a.

fywaam. 1 venwr,

c. w. SHERMAN. CASTING PLANT. APPLICATION FILED JAiI'. 14. 1905.

938,904.- v manna-2,1901

nun-nun 4."

CLIFTON W. SHERMAN OF BELLEVUE, PENNSYLVANIA.

onsrrne PLANT.

Specification oi Letters Patent Patented Nov. 2., 199%.

Application filed January 14, 1905. Serial No. 241,092.

w/a-onaii may concern: ..-e it known that I, CLIFTON W. SHERMAN, times or the United States, residing at devue, in the county of Allegheny and State of Pennsylvania, have invented new and 1.. lul Improvements in Casting Plants, of which the following is a specification:

The object of my invention is to provide ew and improved casting-plant, and the of halted States Letters Patent No. 776,696 wanted to me on December 6th, 1904;. In patent I have described and shown a manufacture of chilled cast iron car-wheels. in the present invention I have also illusated a casting-plant for the manufacture r (similar canwheels, but my invention is" 2. limited to a casting-plant for making car-wheels only, for, with certain changes coming within the scope of my invention, other castings may be made. i

in the accompanying drawings which illus (rate applicatitms of my invention, Figure 1,

a plan view of a plant embodying my invenlimi; igs. 2, 3 and t, elevational views showing different portions of the plant; Fig. 3, a broken plan of platform or carrier; igv (3, an elevational view of platform showing flasks thereon and driving-mechan ism; Fig. 7, a part elevational and a part struction of platform' or carrier; Fig. 8, a detail view of a portion of the; sand-conveyer, sand-screen, and sand-mixing apparatus; Fig. 9, a detail view taken at right angles to the view of Fig. 6; Fig. 10, :1 diagnnmatic view showing a modified method of ramming the sand in the cope and drag portions of the flask; Fig. 11, a detail View of a, portion of the mechanism employed in the moditi ed form of Fig. 10; and Fig. 12, detail view or driving-mechanism.

Referringto the drawings, 1', l, and l represent three cupolas connected up with a reservoir-ladle 2, .which latter is arranged to discharge the molten metal into a pouring ladle Pouring-ladle 3, is suspended from an overhead traveling carriage 4t, mounted on a travelingcrane 5. Crane 5, is mounted on ways 6. i

s illustrated and as preferred I employ a circular-track 7, on which is mounted a 'reling annular ring platform or carrier Carried on platform 8 is a series of ing-plant especially designed for the v gaging and disengaging members 12, cable .13, sheaves 14.. The carriage 1s mounted nonal view showing a flask and the con-- l l r ant invention particularly relates to that F inventions shown and described in equipments or car-wheel flasks 9. The term ,equipment" as. used herein will include the several parts etc ear-wheel-flask, that is to say, the cope, chiller, drag and botton'i-board, and in the drawings 1 have respectively designated these parts as a, b, c and d.

The form of platform or carrier preterably employed is clearly shown by Figs. 5, fi'and 7 and the driving-mechanism for moving the platform particularly shown by Figs. (3 and 12. This driving-mechanism which may be located at any suitable pointor points along the track comprises a motor 10, a carriage 11 having automatically en and runs on rails 16. The mechanism is so arranged that the forward or carrier-movmg travel of the carriage ,1s limlted to about 'the diameter of an equipment or flask, and

the backward travel is the same distance.

- For the purposes of causing this reciprocating movement of the carriage on the rails and causing;- the said engaging and disengaging-members to automatically engage and disengage, .say an axle 17 on the ear rier. just at the proper times, I employ, in addition to the parts heretofore, mentioned, two drums 10 and 10, upon which the cable winds, a movable clutch ll, gearmcchanism l2; pivoted and connected levers 13" and 13, joined by a connecting-rod 14 Each. lever 13 and 13 is provided with an adjustablestop 15*. Connecting-rod .14 extends beyond the lever 13 and joins a bell-crank 16. Joined to bell-crank 16 is a pivoted weighted lever 17.

T he position of the parts as shown by Fig. 12 is the position they assume while the carriage 11 is in the position shown by 'Fig'. (3. When the carriage strikes the stop 15 of lever 13, the connecting-rod, bellcrank' and weighted lever 17*, are moved thereby causing the clutch-meclwnism to be disengaged from the drum 10 and thus stopping the carrier-moving travel of the carriage. v

As shown by the drawings pouring-ladle 3, is arranged to be moved directly over and across the track and as the crane 5 is arranged to travel on ways 6, it will be noted that ladle 3, may be readily moved into the desired position for pouring metal into a no flask carried on the platform or carrier.

For the purposes of placing the equipments on and removing the same from the carrier lemp'loy a crane 18 mounted and adapted to run on a track 19 which latter extends across the track as shown by Fig. -1. On the crane is a carriage 19".

In describing my, method of manufacturing carwheels, the plant illustrated, and the difi erent mechanisms employed I shall follow one equipment or flash, and for this purpose, it is assumed that the equipments are in position upon the carrier and the plant in operation.

At some convenient point along the track as at X, a pattern is placed within the equipment by an operator. A continued movement of the carricrwith the equipment thereon will bring the equipment under the sand supply spout 20,'fron1 which sand is j fed to the drag. Spout 20, as well as several other sand-supply spouts 21, and 22, communicates with a sand=handling and conveying system comprising portions 23,

24, each provided with a reciprocating sandeonveyer 25, a sand-elevator 26, a hopper 27 also provided with a reciprocating mechanism 25, a screenbig-mechanism :28 and a mixer 29. This system of handling and conveying the sand permits the sand to be continuously worked and conveyed from the hopper 27, into which the sand falls during the operation of stripping, which will .be hereinafter fully described, to the sand delivery spouts 20, 21 and Attention is called to the fact that the means shown provide for mechanical means for passing the sand from hopper 27, into a screening apparatus 28, whereby the sand'is thor oughly screened, passing the sand from the screen into a mixer 29, thence elevating the sand through elevator 26 and passing it through the rcciprocatin conveyors located in portions 23 and 52-1 ol thesystem. The sct eening and mixing apparatus are particularly shown by Figs. and 9. i

Sand having been supplied to the dragpart, the equipment is moved under a rammingmechanism or press 30. As illustrated the ramminguneclianism comprises a cylini der into which fluid is supplied from some 1 suitable source of sulfplv. not shown. The turned i 1t Its P ramming-meehanism is supported directly over the track, carrier and equipment by means of a housing or casting 351, which straddles the track, etc. The sand having been properly rammed in the drag-part, and the bottom-board placed in position, the equipment then passes under a hoisting apparatus 32, by which the equipment is raised from the carrier, turned over to bring the cope-part uppermost and replaced uponthe carrier.. Sand is supplied to the cope-part of the equipment by spout 2t, and the copesand then rammed by a ramming mechan ism, or press Rummingmechanism 33, is similar to the mechanism 30, above described. Spouts 22, are provided for the purpose'of supplying additional sand to 0th parts of the flask, if found necessary. If this additional sand is supplied it is rammed. by an operator.

The sand being thoroughly packed in the flask by the ramming machines the next step in the operation of making a wheel is the withdrawal of the pattern. For the purpose of withdrawing a pattern or patterns I preferably provide a hoisting apparatus 34: suspended from an overhead trolley 35. If found desirable two or more patterns may be removed from the flasks at about the same time, this may be accomplished by employ ing two or more hoisting apparatus as 34, mounted to T111. on different supporting rails 36. The location of rails or supports 36 is clearly shown by Fig. 1. In Fig. 1 I have sljown three rails and copc-liftingappar tus, and it will be seen that three different copes may be simultaneously lifted from the carrier conveyed along for a. distance in line with the line of travel of the carrier and then carried out-0t the path of said travel, and, after the withdrawal of the atterns, the copes are brought. back and eposited upon the three drag-portions of the three flasks.

The sand in the flask having now been thoroughly packed and the pattern removed, molten metal is introduced to the flask by means of the pouringdadle, above described. The time required for the flask containing the metal to travel to the point where the casting is removed, is sufficient to permit the mctal to solidify and to assume acondition ready for the shaking-out steps of the method of manufacture. of carrying out the shaking-out steps, I employ a flask-hoisting or liftingqnechain ism 37, having 'a hail 38; which latter is adapted to be connected with lugs on the flash. This v necl'iai'iism is suspended from trolley 39fadapted to run on. a. track 0, or a single rail. Flask hoisting-apparatus 3? is designed to lift the flask, with the exception of the bottom board from the carrier and the casting and then. after the tiasl: has been on a vacant )ace on the carrier. To remove the casting rom the carrier after the flask has been raised therefrom I preferably on:- ploy a swinging crane it. provided with a casting-hoisting apparatus 42. Apparatus -2, comprises a pair of gripping-tongs 43. l nthe drawings I have shown two similar cranes 41 and casting-hoisting apparatus; only one crane and one hoisting-apparatus however, are necessary, the other is provided for emergency purposes. or for the purpose of extending-the time between the pouring of the metal and the operation of stripping the wheel, if necessary.

Crane at with the casting is dapted to For the purposes lit) ceases swing over and deposit the pasting in a pitting-room 44 having a serles ofannealmg pits as shown by Fig. 1.

After the casting has been removed from the carrier the bottom-board cl, is lifted and placed ahead in a vertical position; the shakingout steps ,and the mechanisms employed therefor are particularly shown by Fig. 4. While the flask is being raised from the carrier and casting the sand falls down .over the sides ofthe carrier through the track into the hopper located below said track. this is also the case during the opera tion of lifting the casting from the carrier. Lifting the bottonrboard from the carrier causes what sand is left to fall into the hopper. The sandreceived into the hop er is conveyed therefrom, screened, mine and conveyed to the sand-dclivery-spouts above referred to.

' Instead of supplying the sand to the drag and cope. as above described while on the carrier and ramming or pressing the sand by causing the equipments while on the carmm to be brought under the machlnes; the construction shown by the modified form of Figs. and 11 may be employed. In this construction I have shown means for separately lifting the drag and cope-parts and carrying said parts under sand, supply .means and ramming-machines or presses located a short distance fronrthe track. As illustrated by Figs. 10 and 11, I employ two supports and 45 which extend for a distance in line with the carrier then extend outwardly therefrom and return over the middle of the carrier. On the support 45', is a trolley 46, a hoisting-device 47 having a hail 48; and similar means 46, 47 and 48 are carried on support 45. ,Thes'emeans permit both parts of the flask, z'qc. the drag and copeqiarts to be separately liftedfrom the carrier and separately conveyed to press Sand is supplied to the;

ing-machines 49. respective parts of the flaskthrough sanddelivery spouts 20 and 21 which communicate with a portion 24 of the sand-handling system. as hna'ctofore described. a

After the parts have been set on the.

presses 4!). part 50 is brought into a vertical position. The drag or cope-part is then raised and the sand thoroughly pressed.

\Yhat I claim is 1. In a casting plant, the combination of an endless way, a carrier traveling thereon, a series of flasks on said carrier, successive mechanisms as follows arranged adjacent to the way and acting .in the order named for efl' ecting a complete molding and casting operation and returning the flasks and sand to the starting point in a cycle of mechanical operations, consisting of a mold-formingstation, n'n-achanism for raising a flask from the carrier, inverting the flask and replacing it on the carrier, lifting mechanism for the flask for permitting the withdrawal of the pattern, pouring mechanism, mechanism for separating the flask and casting. replacing the flask on the carrier, and removing the casting, mechanism fox-returning the sand to the mold-forming-station, said sand-returning-mechanism including a screen and mixer, mechanism for removing flasks from the carrier and replacing others thereon, and mechanism, separate and independent of the carrier comprising reciprocating means for moving the carrier intermittently, thereby bringing the flasks in, succession opposite the several mechanisms named.

2. In a casting plant, the combination of an endless way, a carrier traveling thereon, a series of flasks on said carrier, successive mechanisms as follows arranged adjacent to the way and acting in the order named for effecting a complete molding and casting operation and returning the flasks to the starting point in a cycle of mechanical operations, consisting of a mold-forming-statioii. mechanism for raising a flask from the carrier, inverting the flask and replacing it on the carrier, lifting mechanism for the flask tern, pouring mechanism, mechanism for the flask on the carrier and removing the casting, mechanism for removingflasks from the carrier and placing others thereon, and mechanism comprising reciprocating means arranged to engage the carrier for moving the carrier intermittently, thereby bringing the flasks in succession opposite the several mechanisms named.

3. In a'casting plant, the con'ibination of an endless way, a carrier traveling thereon. a series of flasks on said carrier, interrupted at one point'by a vacant space on the carrier, said flasks each comprising a cope and a drag, successive mechanisms as follows arranged adjacent to the way and acting in the ordernamed for effecting a complete mold- "ing and casting operation and returning the flasks and sand to the starting point in a cycle of mechanical operations, consisting of a moldforming-station, mechanism for raising a flask from the carrier, inverting the mold-forming-station, said sand-returning mechanism including a screen and mixer, and mechanism comprising reciprocating means arranged to engage the carrier for moving the carrier intermittently, thereby bringing the flasks in succession opposite the several mechanisms named.

4. In a casting-plant, the combination for permitting the Withdrawalof the pat separating the flask and casting, replacing flask and replacing it on the carrier, lifting with an vmIless-h'zick, of a currivr adapted mounted on the mil-Pier, sand-supply spouts l arranged in fwd sand to the flasks :1 nul whine for ramming the sand in the (ling-part 3 3 in presence of two subscribing WIUXGSSQS. 4 in the Cope part (if thn flask a flask-hoisting j 0f thv flask. a machinev for rannning the sand apparatus ln(-ated between the ruinn'iing muchines and means for intermittently;

moving the. carrier and the flask to cause some of the flasks to be simultaneously and respectively stopped under the said sundsupply spouts, rammingmachines and flask hoisting apparatus, substantially as sin. forth.

In testimony i whereof I affix my signature CLIFTON W. SHERMZfi.

Wii'nesses:

W. G. DQQLI'HLE, Mmcmm Ht nnRs.

Images