US1688602A - Permanent mold - Google Patents

Description

J. T. WARNER PxamgmNENjJ.1 MOLD Filed June 15, 1927 4 sheets-sheet l Gttoznu' '5 Oct. 23; 1928. A `1,688,602

J. T. WARNER PERMANENT MOLD Filed June 13, 192'? 4 Sheets-Sheet 2 9g jqrfjj 9 l- Z' 7U 7j? 73 75 107 105 fo gli@ Il( 75 0 9%/ 0 I|`l i g 9 9 .fai 9 55 l i6 06 8 93 53 51 47 7% 14, 85 e?? 4f '45 j 413 79 L 9 -9 l 33 19 j@ 37 3 Y fr "y r1'- f H lg Q61 Z Z0 e 6 1 I 23 10 1/ J;- 51 Z4. 35 L j] Z4' Z6 i? j @j W 60 n'mnnw f Oct. 23, 1928.

J. T. WARNER PERMANENT MOLD 4 Sheets-Sheet Filed June 15, 1927 WW MQ Illlllllll.

J. T. WARNER PERMANENT MoLDA Oct. 23, 1928.

4 Sheets-Sheet 4 Filed June 13, 1927 Jmes patented Oct. 23, 1928.

UNITED STATES PATENT OFFICE.

JAMEs T. WARNER, OE DETROIT, MICHIGAN, AssIGNOR To WHITEHEAD AND KALEs COMPANY INCORPORATED, OE RIVER ROUGE, MoHIGAN, A CORPORATION or MICHIGAN.

PERMANENT MOLD.k

The invention relates generally to molds and more particularly to permanent molds adapted for use in forming vehicle wheel hubs.

The invention has as one of its primary objects to provide a nioldof this character which is distinguishedby its simplicity,which may be constructed economically, assembled with facility and operated with ease. Another object ot' the invention is to provide a mold of this character arranged to permit maximum production and economical pour ing of the castings. A further object of the invention resides in the provision of a vehicle w hub mold permitting a secure anchoring ot` the spokes in the hub.

rlhe invention also contemplates numerous novel details of construction and has as its object to simplify, render more eliicient, and improve generally apparatus of this character.

In certain types of permanent molds now more or less universally employed a serious disadvantage has been commonly experienced in the necessity of using a certain amountl of sand Jfor the cope and drag portions of the mold. thus retarding production and resulting in porous castings. In thefpresent invention this disadvantage is more than compensated for by the novel construction of the mold which in addition to having a permanent drag and side walls is formed with a permanent cope.

The above objects and the novel details of construction oit the invention will be made more apparent as this description proceeds especially when considered in connection with the accompanying drawings wherein;

Figure 1 is a top plan view of the mold constructed in accordance with this invention;

Figure 2 is a sectional view taken substan# tially on the line 2-2 of Figure 1;

Figure 3 is a view similar to Figure 2 showthe partsin open position;

Figure 4 is a sectional view line 4--4 of Figure 3;

Figure 5 is a sectional view taken on the taken on the line 5?-5 of Figure 3;

Figure 6 is a sectional view taken on the line 6-6 ot Figure 2;

. Figure 7 is a detail perspective view showingthe centering means for the cope portion of ythe mold;

Figure 9 is a sectional view taken on the line 9 9 of Figure 2 and t Figure 10 is a sectional view taken on the line 10-10 of Figure 2;

Figure 11 is a sectional view on the line 11-11 of Figure 1.

Referring now more particularly to the drawings wherein like reference characters indicate like parts it will be noted thatV there is illustrated a table or frame including an outer circular lrim 10 supported by suitable uprights 11. Projecting upwardly from the rim 10 of the table are supporting legs 12, each formed with a slot 13 for receiving the angularly turned end 14 of a spoke 15. As shown 'the legs 12 are formed with upwardly extending projections 16 serving to accurately align the spokes 15 relative to the hub to be cast in the mold. For positioning the lower series of spokespreparatory to forming the hub a series of plates 17 are secured to the rim 10 at proper intervals and are formed with spaced projections 18 for receiving and accurately positioning the outer ends of the spokes 19, both series of spokes being. alternated in a well known manner.

The outer rim 10 of the table is connected by means of the spokes 2O to an inner ring 21 formed with a plurality of circumferentially arranged embossed portions 22 apertured to receive bolts 23. Secured to the enlargements by meansA of the bolts 23 is a stripper plate 24 having a downwardly extending guide portion 24 formed with the aligned bearing portions 25 and 26 for receiving an operating shaft 27.- Arranged for vertical movement within the guide portion 24 is a sleeve 25 cut away as indicated at 26 t0 provide clearance for the bearing portions and formed with an elongated slot 27 in the upper end thereof. Adjacent the opposite sides of this slot are the upwardly extending ears 28 apertured to receive thefpin 29 carrying a connecting rod 30, which is operated by an eccentric 31 keyed to the operating shaft 27. In Aorder to insure a proper alignment of the sleeve 25 with respect to the mold, wear plates 32 are adjustably positioned between the sleeve and guide portion 2 4 of the stripper plate. Bolted or otherwise secured to the sleeve 25 is a stool plate 33 forming the bottom wall of the mold and formed with a conical portion 34, which in one position of the stool plate engages a conical seat portion formed in the upwardly and inwardly extending flange 36 of the table. rlhe bottom surface 37 of the flange cooperating with a circumferential flange 38 formed on the stool plate for limiting the upward movement of the latter. The stool 33 is also formed with a depending flange 39 arranged to seat upon the stripper plate 24 when the former is in its lowermost position.

To form t-he side walls of the mold a pair of swingingly mounted cheeks 40 are conlthe lever 43.

.nected by means of the connecting rod 4l to a pair of vertical shafts 42 mounted on the table.v Due to the fact that the cheers 40 swing in a relatively large arc some means must be provided other than the uprights l2 for supporting the outer ends of the upper series of spokes. For C.ccomplishing this result a. ring 43 comprising three sections 44, 45 and 46 is provided. As shown in Figure l ofthe drawings the center segment 45 together with the inner ends of the segments 44 and 46 are mounted on top of the shafts 42, while the outer ends thereof are secured to certain of the upright members l2. For accurately positioning the spokes upon the ring the latter is formed with a recess 4'? for receiving the inturned end of the spoke and is provided with the spaced projections 43 for. preventing lateral n'iovementof the spokes. F or conveniently operating the cheeks 40 the handles 43 and operating lever 49 are provided. rlhe latter being pivotally mounted on the table and having a portion extending beyond the pivotal connection and arranged to engage in a suitable recess 50 formed in the lower edge of the cheeks 40. Thus when the cheeks are in Closed or operating position they may be initially separated from each other by manipulating YFor' effectively holding fthe cheeks in operative position the arcuate shaped lever 51 is provided, one end of which is formed with an elongated slot 52 for the reception of a pin 33 attached to one of the -connecting rods adjacent the connection thereof with the cheek. The handle portion of the lever is formed with a cam portion 54 and a notch 55 positioned in the :inner arcuate surface of the lever and arranged to engage a pin' 56 extending,upwardly from the opposite connecting rod. ln order to provide a tight seal between the two cheeks the lever 5l is formed with an enlarged portion 57 extending beyond the pivot pin 53 and formed with a longitudinally extending bore u() 58 within which a plunger 59 is reciprocably mounted. The plunger is formed with an enlarged head portion arranged to engage the pin 53 under the tension of a coil spring 60 'which engages the enlarged head of the plunger and is held in position by means of suitable plug 6l. Thus it will be readily apparent that the foregoing arrangement compensates for any wear of the cheek ensnrfaces and the latter are yieldably held in firm engagement with each other.

Referring new to the upper or cope forming portion of the mold a pillar 62 is rigidly or non-rots Livcly mounted upon oneof the uprights l2 by means of the bearing cap 63 and ltey p4. Sleeved upon the pillar 62 is atubular member 65 having slots 66 and 67 arranged in diametrically opposite sides thereof, within which a rack bar 68 and a key 69 are respectively sectioned. Slidably mounted on said tubular member are spacing collars or bushings 270 having diametrically opposite slots l'/'l and 72 formed thereiny for receiving the rack bar yand key respectively, and secured to these bushings by mea-ns of the screws 70 is the upper mold support 7 3. As shown particularly in Figures 2, 3 and 9 of the drawing this support is formed with :i transverse slot adjacent the lower end thereof which together with the cap 74 forms a housing 75 for a transversely extending shaft 7G, The reduced portion 77 of the cap and the bearing portion 78 of the support-73 constituting a bearing for the shaft. Arranged within the housing and keyed to the shaft 7G is a gear 79 meshing with theraclt bar G3 and operable to raise the support 73 upon rotation of the shaft 76, which is accoinplished by means of the hand wheel SO keyed to one end of the shaft. Secured to the opposite end of the shaft is a suitable clutch member 3l adapted to engage a cooperating clutch member 82 secured to onel end of the housing and operable to lock the hand wheel from rotation. For normally holding the clutch members in engagement a coil spring 33 is provided. As shown, in Figure 9 this coil spring surrounds the forward end of the shaft 7G having one'A end abutting against the hand wheel and the oppos e end engaging the housing. ylhus when it is desired to move the support 73 it is nec ysary to exert an inward pressure on the hand wheel, whereupon the spring is compressed and the clutch members are disengaged. Suspended from and carried by the support Z3 by moans of the arm is a segmental tubular guide member formed of two parts 85 and 36, the former being formed integral with the arm 34 and the latter besecured to bolts 37.

the former by means of the .es shown, the segmental tubular is formed with a plurality, four in radially inwardly extending projections 33 apertured to receive the pins 39. Pivotally secured to each of the projections 88 are the links 90 having elongated slots 3l. arranged within the tubular guide member and capable'of movement relative thereto are a plurality of quadrants 92, the lower surfaces of which constitute the upper portion of the mold. As shown each of these quadrants is formed with an outwardly eX- tending projection 93 apertured to receive a pin 94 which in turn is received in the slots 91. Thus each of the quadrants are movable relative to one another and relative to the guide member. For holding the quadrants in operative position the segments 85 and 86 are formed with conical seat portions 94 and 95 arranged to contact with corresponding conical portions 95 and 97 formed upon each of the quadrants 92. As shown, the lower edges of the quadrants are formed with the slots 98 which cooperate with the upper portions of the cheeks to accurately position the inner edges of the upper series of spolres relative to the mold.

Assuming that the top mold is apparent in the position shown in Figure 2 and it is desired to raise the cope the operator disengages the locking clutch by exerting an inward pressure upon the hand wheel 80 and rotates the same in a clockwise direction causing the gear 7 9 and consequently the mold support to move upwardly upon the rack 68 and key 69. As evidenced from the above figure the segmental tubular guide member will also move upwardly and due to the slot and pin connection between the segmental guide member and quadrants the latter will remain stationary until the pins travel the full extent of the slots 91 in the links 90, whereupon the n quadrants will be carried outwardly, due to the engagement thereof with the finished casting, and upwardly to the position shown in Figure 3 @n the other hand when it is desired to lower the cope the segmental guide and quadrants are lowered as a unit until the latter contacts with the cheeks preventing further movement of the quadrants. Downward movement of the segmental guide member, however is continued until the concial seat portions 9i! and 95 engage the corresponding concial surface 96 and 97 on the quadrants, whereupon the latter are forced inwardly and downwardly to the position shown in Figure 2.

From the foregoing it will be readily ap parent that inasumch as the top portion of the mold is swingingly mounted with respect to the remaining parts of the' mold some means must be provided for accurately centering the quadrants relative to the center strip and cheeks. For accomplishing this result a plate 99 is secured to the upper end of the pillar 62 and is formed with a projection 100 apertured to threadedly receive ythe bolt 101, one end of which engages a projection 10Q- on the sleeve 67. Y

1While it is believed that the operation of the machine will be thoroughly understood from the 'foregoing description a brief outline thereof will be given. Assuming that the several parts of the mold are in open position and the spokes are properly arranged on the supports provided for this purpose the center strip 33 is moved into position by the guide member 24 operatively connected to the eccentric and operating shaft 27. rIhe cheeks are then swung and locked into closed position by means of the lever 51. A core 103 is then placed in a suitable recess 104 formed in the center strip for forming the usual central aperture in the hub. The operator then lowers the cope portion of the mold and inserts thehollow sprue 105, the lower end of which is sleevedover a portion of the core 103 and forms the flared portion 106 of the hub. A weight 107 pivotally mounted in ther segmental guide member functions to hold the sprue in position. In practice metal is poured at one side only of the sprue allowing the gases formed to escape outthe opposite side. An aperture 103 is provided in this latter side through which the excess metal may How. After the pouring operation is completed and .the casting chilled the stool plate is lowered, the cheeks swung to the position shown in Figure 3 and the cope raised by means of the handle wheel. This latter action is accentuated by the provision of a counter' balancing weight 109.

From the foregoing it will be apparent that the herein described construction permits a maximum production of molding due primarily to the fact that the cope, drag and side walls of the mold are permanent and may be used to form numerous hubs. Moreover with the above arrangement a quicl; pouring is accomplished due to the fact that the casting may be removed from the mold immediately after chilling. lVhile the in vention has been shown and described in connection with a mold for forming wheel hubs it will be readily apparent that the invention is broader than this in its scope and may be employed with equalfacility to form various other castings. Therefore reservation is made to malte suoli changes in the details of construction as may come within the purview of the accompany-ing claims.

Vhat I claim as my invention is:

1. In a permanent mold, the combination with a support, of a member carried by said support forming the base of the mold, a pair of swingingly mounted cheeks forming' the side wallsof the mold, and a cope forming portion reciprocably and swingingly mounted relative to said members@ In a permanent mold, the combination of means forming the bottom and side walls of a mold, and a cope forming portion comprising a plurality of universally movable segments adapted to cooperate with one another to form the top of the mold.

3. In a permanent mold, the combination wit-h a support, of a member reciprocably and swingingly mounted upon said support, and a cope forming portion comprising a plurality of quadrants pivotally mounted upon said member. i

lll!

il. In a permanent mold, the combinationV with a table, ot members mounted upon said table forming the bottom and side Walls or a mold, a pillar vertically mounted upon said table, a supporting member reciprocably and sivingingly mounted upon said pillar, and a cope forming portion comprising a plurality of quadrants pivotally mounted upon said supporting` member.

5. ln a permanent mold, the combination With a table, of members mounted upon said table forming the bottom and side Walls of the mold, a pillar vertically mounted upon said table, a supporting member reciprocably and sivingingly mounted upon said pillar having a segmental tubular guide portion, and a cope forming portion comprising` a plurality of quadrants universally mounted Within said guide portion.

6. In a permanent mold, the combination with a table, ot means associated with said table forming the bottom and side Walls et the mold, a tubular supporting member reciprocably mounted upon said table, and a cope forming portion arranged Within said tubular portion and capable ot' movement relative thereto.

7. In a permanent mold, the combination With a table, ot' means associated with said table forming the bottom and sidewalls ot the mold, a reciprocably mounted tubular supporting` member, a cope Yforming portion comp "ising a plurality ot' quadrants positioned Within said supporting member, and a connection betiveen each of said quadrants and tubular member permitting a universal movement ot the former with respect to the latter.

S. ln a permanent mold, the combination With a table, of means associated with said table forming the bottom and side Walls ot the mold, a pillar vertically mounted upon said table, an upper mold support having a tubular guide member reciprocably and sivingingly mounted upon said pillar, a. cope :Forming portion comprising a plurality ol' quadrants positioned within said supporting member, and means including a pair ot slotted links connecting each oit said quadrants ivith said tubular guide member.

9. In a permanent mold, the combination,

with a table, of means mounted upon said table forming the bottom and side Walls oit the mold, an upper mold support carried by said .table having a tubular guide portion, a cope forming portionarranged Within. said tubular guide member having a conical surface adjacent one end thereof, and a conical scat portion upon said guide member engageable with the conical surface atoresaid to accurately position the cope and move the same into engagement With the side Walls ot the mold.

l0. ln a permanent mold, the combination With a table, of an upper mold support. carried by said table having a tubular guide portion, a cope forming portion comprising a plurality oit quadrants arranged Within said tubular guide portion and formed with conical surfaces, and conical seat portions upon said guide member engageable with the conical surtaces aforesaid to accurately position the quadrants.

ll. ln a permanent mold, the combination with a table, ot an upper mold support carried by said table having a tubular guide portion, a cope forming portion comprising a plurality oi" segments arranged Within said tubular guide portion and formed with conical surfaces, linl-Is connecting each ot' said quadrants with tlie guide portion having elongated slots therein permittinkc,` a lateral and longitudinal movement ot said quadrants relative to theV guide portion, a conical seat termed in said tubular guide portion, and means tor operating' the latter to bring the conical seat into engagement with the conical surfaces upon the quadrants Jr'or accurately positioning the latter.

l2. ln a permanent mold, the combination with a support, of a stripper plate secured to said support, a guide member reciprocable iin said stripper plate, a drag forming member secured to said reciprocable guide,

and a Wear plate adjustably positioned be tween the stripper plate and guide for accurately centering the drag forming member.

18. ln a permanent mold, the combination with a table, oft a cope forming' portion and a support therefor comprising a pillar nonrotatively mounted upon said table, a member rotatively sleeved upon said pillar having niainetrically opposedy slots therein, a key secured in one said slots, a rack bar secured in the other oit said'slots, bushings sleeved upon said member havin slots receiving said lrey and rack bar, an upper mold supporty carrying said cope forming portion Isleeved upon said bushings, and a gear a 1ranged Within said upper mold support and meshing with said rack tor raising and lowering the cope forming portion.

14. ln a permanent mold, the combination with a table, of a pillar non-rotatively mount-y ed upon said table, a member rotatively sleeved Vupon said pillar, an upper mold support carried by said member and constituting the cope forming portion ot a inold,`and means upon said pillar adjustably engaging a projection on said member for accurately centering` the cope forming portion.

15. lnv a permanent mold, the combination with a. table, of a cope termine,` portion recip-w rocaoly and swingingly mounted upon said a le, and adjustable means for limiting the NWinging movement of the cope and accurately A entering the saine. 1G. ln a permanent mold, a support, means Cil adapted to cooperate with each other to form the top of the mold, and means lor moving,` said sections as a unit into operative relation to the side Walls oi the mold.

17. ln a molding apparatus, a support, a member reciprocably mounted `pon the support, a plurality of independently movable members sivinging'ly mounted upon the reeprooable member aforesaid and capable of longitudinal movement relative thereto, and means operable upon reciprocation ot said member to nieve and hold said members into engagement with each other to form one Wall of a mold.

18. ln a permanent mold, a support, means upon the support forming` tlie bottom and side Walls ot i mold, a tubular member reeiprocably mounted upon the support, a plurality ot members sivingingly mounted Within said tubular member and capable longitudinal movement relative thereto, and means upon said tubular member engageable with the said members to move and hold the same into engagement with cach other and into accurate registration v. i the side Walls of the mold to form the topl v. ll et the latter.

19. ln a mold' apparatus, a support, a plurality ol' independently movable elements adapted to cooperate With each other to :term one wall of a mold, and amemberl reciproeably mount-ed upon said support and engageable with the elements aforesaid to move the latter inwardly and hold the same into engagement With each other.

20. ln a moloinff apparatus, a support, a tubular member reeiproeably mounted upon the support and a plurality of segments disposed Within tubular member and operable upon movement ot the latter in on-e direction to automat'eally move into engagement with each other to form one Wall of a mold.

21. 1n a molding apparatus, support, a member reciprocably mounted upon the support, a plurality ot segments loosely pivotally connected to said member, and means upon the said member operable upon movement ot the latter in one direction to move and hold @anni the segments in operative engagement with each other to form one Wall ot a mold.

22. ln a molding` apparatus, a support, a member reciprocably mounted upon the support, a plurality oi segments adapted to cooperate with one another to iorm one VWall of a mold, and a connection between the segments aforesaid and reoiprooable member operable upon movement of the latter in one direction'to permit the segments to swing outwardly to clear the mold.

23. In a molding apparatus, a support, a tubular member reciprocably mounted upon the support7 a plurality of segments arranged Within said tubular member, and a slotted pivotal connection between the segments and tubular memberfaforesaid permitting' a universal movement of the segments relative to said member.

24. ln a molding apparatus, a support, a member reeiprocably mounted upon the support.' plrr-.iality of' segments loosely pivotally connected to said member having arcuate body portions adapted to cooperate With each other to term a channel 1Cor the substance to be poured, the arcuate body portions of said segments terminating in lateral portions adapted to cooperate with each other to 'form one Wall ot a mold.

25. ln a permanent mold, the combination with a table, et means upon said table tormine' the bottom and side Walls of a mold, a tubular member reciprocably mounted upon said table, and a eope forming portion disposed Within said tubular member and aetuated thereby to move into and out of registration with the means aforesaid.

Q6. ln a moldingl apparatus, a support, a member reeiprocably mounted upon the support, a plurality of independently movable `members swingingly mounted upon the reoiprocable member aforesaid and adapted to cooperate `with each other in one position of the reciprocablejmember to form one Wall of a mold.

ln testimony whereof I affix my signature.

JAMES T. WARNER.

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