US935678A - Concrete-molding machine. - Google Patents

Description

w C; i

annua, t I

4 SHEETS-SHEET l.

'Patented oon 5, 1909.

- J; A, MGNAMARA.

CONCRETE HOLDING MACHINE. I XLIOTIQ! FILED SEPT. 7, 1907.

" y cOzN/A ZcrJ/fG/lmrmnpmtofa, f f

d l l l .l 1 v witnesses v 1. A. MONAMARA. GONCRETB HOLDING MACHINE. LPPLIOL'HOI FX1-BD SEPT. 1, 1907.

Patented com, 1909. A

4 SHEETS-SHEET 2.

Witwen@ J. A. MONAMARA.

GONGBBTB HOLDING MACHINE.

A LIP'LIOATIO] FILED BEIT- 7, 1901.

rammed oc. 5, 1909.

4 SHEETS-BREST 3.

UNTTED 'STATES PATENT OFFICE.

JDHN; ALBERT llcNAMARA, 0F BURLINGTON, WISCDNSIN.

concnEmMoLnING MACHINE.

' Specicaton of Letters Patent.

Patenten oet. 5, 1909.

Application led September 7, 1997. Serial No. 391,842.

' To all whom 'it may concern:

Be it known that I, JonaY ALBERT MCNA- MARA, a citizen of the United States, residing at Burlington, in the county of Racine and State of Wisconsin, have invented a new and useful Concrete-Molding Machine, of which the following is a specification.

This invention relates to means for molding articles of a cementitious nature, such as concrete blocks, bricks, and the like.

The primary object of the present invention is to provide novel means whichwill thoroughly com act the material prior to and upon its de ivery into the molds, said means also forming smooth water-proof snrfaces upon the articles that will secure a highl effective nish. f

A filrther object isv to provide means which will form the material into the shape of the mold or receptacle and produce core openings therein prior to the introduction of such material intothe'mold, said means being -adjustable to various sizes of molds. I

The preferred embodiment of the invention is illustrated in the accompanying drawings, wherein:

Figure 1 is a side elevation of the machine. Fig. 2 is a vertical longitudinal sectional view therethrough. Fig. 3 is a side elevation of a portion of the' mechanism, but illustrating'V the parts in a position to deliver into a mold. Fig. 4 is a horizontal sectional view through the machine, substantially on the line 1 -4 of Fig. 2. Fig. 5 is a vertical sectional view on the line 5-5 of F 1g. 2. Fig. G 1s a detail view of a portion of the elevating means for the forming mold.

Fig. 7 is a face view of one of the clutch members. Fig.V 8 is a horizontal sectional view through the clutch. Fig. 9 is a detail sectional view through the clutch operating mechanism. Fig. 10 is a detail sectional view through the holding means for the core of the forming mold. Fig. 11 is a horizontal sectional view through the forming mold. Fig. 12 is a detail sectional view on the line 12-12 of Fig. 2.

Similar reference numerals 'designate corresponding parts in all the figures of the drawings. In the embodiment illustrated, a-suitable frame 12 is employed having in the lower portion thereof, a platform 13 on which the molds are placed. One of these molds is illustrated and is designated 14. It is provided with suitable cores 15 and a removable pallet 16.

Mixing and feeding mechanism for the mold is mounted on the frame. In the embodimentdisclosed, a casing 17 is employed, in which are mounted rotatable stirrcr mem bers 18 revolubie in opposite directions and having radial blades 19. The bottom of the casing is in the form of a trough 2O having a spout 21 delivering into the upper end of an inclined rotatable drum 22. The drum is suitably mounted on roller bearings 23, and has a worm gear 2-1 engaged with a driving worm 25. A shaft 26, carrying the worm, is belted, as shown at 27 to a pulley 28 carried by one of the stirrer shafts, and the two stirrer shafts are connected by a crossed belt 29. A driving belt 30, connected to the stirrer shaft, is journaled on a driven shaft 31, and is connected to a sprocket wheel 32 also journaled on said shaft. VThe sprocket wheel is operated from any suitable source of power by means of a sprocket chain 33.

An elevator for the material is shown at 34, and has at itsupper end aspout 35 delivering to the upper stirrer member 1S. A water reservoir 36 has connected thereto a pipe 37 provided with a perforated portion 38 locatedv .within the drum 22.

The lower or delivery end of the drum 22 is located a considerable distance above the mold supporting platform 13, and intel osed between said platform and the drum,

standards 39 rise from the corners of the mold supporting platform 13, and slidably mounted on said guide standards is said holder or forming mold. This mold consists of side walls 40 with end walls 4l 1ocated between the side walls and adjustable toward and from each other. Braces 42, carried by the side walls, project beyond the opposite edfres thereof, and have openings 43 that receive the ends of tie bolts 4-1 bridging the space between said side' walls. Clamping nuts 45 are threaded upon these tie bolts, and thus serve to effectively secure the walis in coperative relation. At the same time, by loosening the nuts 45, it will be evident that the end walls 41 can be 46, which receives the material from the drum, and directs it into the holder or mold.

stitutes the delivery end of the holder or.

mold, and is controlled by a closure in the form of a sliding gate 4T operating in guideways 48 carried by the ower end of the holder or mold. Cores 49 and 49* are located in the forming mold, and in line with rso lthe cores 15 of the finishing mold. The

central core 49 is suspended by across piece 50, and the cores 49 are located on opposite sides thereof. The cores 49* are held in place by bolts 51 passed through the end walls and threaded into the opgmsite sides of the center core, as illustrated in Fig. 10. Each of the cores 49* has collars 52 projecting from orieside thereof and surrounding the bolts 51, and nuts 53 screwed upon the bolts, serve to maintain the cores 49* in fixed positions. lVith this arrangement, it will be evident that the cores may be ad justed, and if desired one or more can be readily removed. Consequently when different molds are employed in the machine, the holder or forming mold can be modied to correspond thereto.

The holder or forming mold, while of the same cross sectional area, as the finishing mold 14, is of considerably greater height than the same, and has a vertical movement between the top of a mold placed beneath it and the lower end of the drum 22. For the purpose of .effecting this movement, spaced levers 5-lare fulcrumed between their ends, as shown at 55 on the frame, and have their outer ends pivotally connected to the upper portion of the forming mold. Other levers 56, fulcrumed at their forward ends, have link connections 57 with the rear arms ofthe upper levers 54. Fixed upon the shaft 31 are rotatable driven heads 58 provided with cams 59 and cam rollers 60. -These cams and cam rollers succes sively engage with the rear ends 61 of the levels 5G. Consequently it will be evident that if the heads are revolved, the cams and cam rollers G0 operatin on the levels 56, will move the same downwardly. This downward movement will be transmitted to the levers 54 and thus cause the` forming mold to be elevated toward the feeding means or drum 22.

In order to connect the driven shaft 31 to the driving member or sprocket wheel 32, the mechanism disclosed more articularly in Figs. 7 and 8 is employ The combined sprocket wheel and pulley has at its inner end a clutch member G2, and another clutch member 63, feathered as shown at 64 upon the shaft 31, is movable into and out. of coaction with the member 62.' This movement is effected by means ofa swinging arm G5 having pin connections 6G with the clutch member 63. said nrm being rotatable with the shaft 31. and having a. spring connection (3T therewith. The spring connection aforesaid serves to urge the clutch member G8 into coaction with the clutch member G2, and it will be evident that when the members are in coactingrelation, as disclosed in Fig. S, the shaft Ill will he revolved with the driving wheel 3Q. Consequently the heads will be rotated, and the mold elevated. .Vhen elevated, however, it is necessary that the rotation of the heads be stopped, and for this purpose` a combined stop and clutch actuating device, in the form of a hook GS is pivotcd between its ends on one-of the standards of the frame, and has an outer inclined track 69 movable into the path of movement of an extension T0 on the arm 65. The upper end of the stop hook 68 is provided with a slot T1, and the offset terminal 72 'of a depending arm 73 is engaged in the slot. This arm, as shown particularly in Figs. l and 3, has outstandlng fingers 7-1 secured to one of the leveds 54. "ith this arrangement when the levers v path of movement of the extension 70. Conv sequently as said Aextension strikes the track, it will be moved inwardly, thus swinging the arm in the same direction against the tension of the spring GO and carrying the clutch member 63 out of coaction with the clutch member 62, thereby releasing the driven shaft 31 from the driving member lVhen the parts are released, as above described, it is desirable to lock the mold elevated until a predetermined amount of material has been deposited therein and the j following mechanism is employed for this purpose...-, The rear ends of the levers 54 are provided with brackets 75 having inclined tracks 76, and swinging locking arms 77 pivotcd upon the frame, as shown at 75 have rollers 7 9 that operate on the tracks when the mold is elevated, as illustrated in Figs. 1 and 2. Springs S0 having adjustable connections 81 with the arm 7i' serve to urge the` rollers upon the track and hold them thereupon until the weight of the material in the mold is sufficient to overcome the tension of the s rings, whereupon the rollers and arms wil be forced rearwardly and the mold ermitted to drop, as hereinafter explained).

Automatic mechanism is employed for effeet-ing the operation of the gate 4T. This gate has link connections 82 with the depending arms 83 of bell crank levers, and these levers are carried by a sleeve S-l and have rearwardly extending arms 85 disposed in the path of movement of a roller 86 jourmp1s naled to and between the heads 5S. It; will thus be evident that as the heads are revolved, the roller 86 striking the rear end of the arm S5 of the bell crank will move the same downwardly, thus `swin, ';ing the arm S3 in a direction to cause the gate 47 to slide to its closed position. The roller SG is preferably disposed' slightly in advance of the `cam rollers 60 mounted on the outer sides of the heads 5S. The said bell cranks furthermore have upstanding arms Si', and links S8, connected thereto, are connected to upstanding ears Silof a trip 90. T his trip has its forwardly extending end disposed in the path of movement of a pin 91 carried bythe forming mold. Therefore upon the downward movement of said forming mold, the trip 90 will be swung, consequently drawing upon the lings 88, swinging the depending arms S3 rearwardly, and causing the gate 4T to o )en v The operation of the machine is as follows: The material in proper proportions' and in dry condition iscarried upwardly by the elevator 34 and delivered through the spout, 35 upon the upper revolving mixer 1S. 'lhis mixer throws it upon the lower op- )ositely revolving mixer so that the material is thoroughly comminglcd and is delivered by the spout 21 into the drum 2:2. Here it is moistened and again mixed, finally passing from the lower end of the drunr. into the top of the forming mold. Assuming the mold in elevated position, as illustrated in Figs. 1 and 2, it will remain in said position until the weight ofthe material placed therein, together with the weight of the mold is sufiicient to overcome the tension of the springs 80, whereupon, as already described, t 1e rollers 79 will )e forced rearwardly and the mold will drop. In the meantime, a finishing mold 14 has been placed upon the platform 13 directly below thc lowerl end of the forming mold, and as the said forming mold drops. the pin 91 striking the trip 90 will can@ the gate 4T to open. The result is that the material will drop with considerable force into the finishing mold and fill the same. The downward.movement of the forming mold will of course swing the levers 54 and this will carry the stop hook 68 out of engagement with the extension T0 of the arm 55. Therefore the spring 6T will act to "carry the clutch member (33 into coaction witli the clutch member G2, aiul the driven shaft 31 will be clutched to the driving wheel 32. The heads 58 will therefore be rotated, and thus the roller vSG will engave the rear arms 85 ofthe bell crank,l swinging the same to close the gate. Immediately afterward the cam 59 and cam holder G0 will engage therear end (3l of the levers 5G, Swingin" the same downwardly and elevatin'r the tiirming mold. Upon this movement, the locking rollers 79 will reingage upon the traek 76 and as the stop hook GS is no w positioned in the path of movement of the extension T0, the clutch will be operated to disconnect the driving and driven members. The mold will thus be locked until the feeding means has again delivered a sullicient quantity to force the rollers from the track against the tension of the springs which tension can be regulated as desired by hooking more or less of the coils to the arms.

4One of the features of importance in the machine is the above described forming mold. It is preferably constructed of sheet metal, and it will be evident that it contains a quantity of material sullicient Vto form a number of the blocks or other articles. lach time it falls therefore the material dropping with considerable force will be compacted, and furthermore the action of the material against the smooth sides will cause the surfaces to assume a smooth polished appearance and make them substantially waterproof. It will also be observed that the openings will be formed for the cores so that inner as well as outer surfaces of the above character will thus be `produced. At. the y tages of the herein described invention will y be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion, and minor details of construction, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. In a molding mechanismv of the class described, the combination of a feeding mechanism having a fixed lpoint, of discharge, a'forming mold disposed under the same and movable in the line of fall of the materiaifronl the feeding means and having a ho per to receive the said material, said mol being divided into compartments open at their upper and lower ends, a tixed finishing mold divided into compartments communicating with those. of thel forming mold, and means for actuating the forming mold back and forth between the lixed mold and feeding means to compress and deliver die material to the finishing mold.

2. In a molding mechanism of the class described, the combination of a rotary feeding conduit having a fixed point of discharge, a forming mold open at both ends and mounted for vertical movement under the discharge end of the conduit, a fixed finishing mold arranged under the. lower end of the forming mold to receive material therefrom. and a valve carried by the forming mold to close the lower end thereof.

3. In molding mechanism of the character set forth, the combination with a finishing mold, of a forming mold located above and vhaving a cross sectional area substantially equal to that of the finishing mold, means for moving the forming mold with respect to the finishing mold to compress the material placed therein, and means for governing the passage of material from the forming mold to thefinishing mold.

4. In molding mechanism of the character set forth, the combination with a finishing mold, of a forming mold located above and having a cross sectional area substantially equal to that of the finishing mold, means for effecting a vertical movement of the forming mold toward and from the finishing mold to `compact the material placed therein, and means for governing the passage of material from the forming mold to the finish- 'ino' mold.

o. In a molding mechanism of the class described, the combination with a finishing mold, of a forming mold located above and having a cross-sectional area substantially equal to that of the finishing mold, said forming mol l being of a greater height than the finishing mold, means effecting a vertical movement of the forming mold tovvard and from the finishing mold to compact the material placed therein, and means for governing the passage of the material from the forming to the finishing mold.

6. 1n molding mechanism of the character set forth, the combination with a finishing mold having a core therein, mold located above'the finishing mold and having a core located in line with the core of said finishing mold, means for feeding material into the forming mold, and means for governing the passage of the material from the forming mold to the finishing mold.

7. In molding mechanism of the character set forth, the combination with a finishing mold having a core therein, of a vertically movable forming mold located above the fin ishing mold aml having a core disposed in line with the core of said finishing mold, means for feeding material into the top of the forming mohhmeans for controlling the passage of the' material from the bottom ot the forming mold into the finishing mold,

and means for effecting a vertical reciprocatory movement of the forming mold to compact the material placed therein.

8. In molding mechanism of the character set forth, the combination with a finishing mold support, of a vertically movable forming mold located above the support, means for feeding material into the top of the forming mold, a gate located in the bottom of a forming of the forming moldameans for efl'ecting a vertical movement. of the forming mold toward and from the support to compact the material placed therein, and means for ating the gate to deliver the packed material from the bottom of the forming mold into a finishing mold placed upon the support.

9. In molding mechanism of the character set forth, the combination with a finishing mold support, of a vertically movable forming mold l( lated above the same, said forming mold comprising relatively adjustable walls and removable cores, means for feeding material into the top of the forming mold, a gate located in the bottom of the forming mold, means for effecting a vertical movement of theAv forming mold to compact the material placed therein, and means for operating the gate to deliver the packed material from the bottom of the forming mold into a finishing mold placcdupon the support.

10. In molding mechanism of the character set, forth, the combination with a supporting frame. of a mold supporting platform carried thereby, vertical guides rising from said platform, a vertically movable forming mold slidabl;r mounted in the guides, feeding means located on the frame and delivering into the top of the forming mold, means for controlling the passage of the material Vfrom `the-bottom 4ofthe-forming mold, and mechanism for effecting a vertical movement of the forming mold toward and from the mold supporting platform.

11. In molding mechanism of the character set. forth, the combination with a movable forming mold, of means for moving the operl same, means for directing material into the forming mold, means for automatically locking the forming mold against movement nntil a predetermined amount of material has been placed therein, and means for delivering a portion only of the material from the forming mold. i i Y 12. In molding mechanism of the-character set forth, the combination w37 th a forming mold movable in opposite directions. of

means for moving the same in one direction, means Vfor directing material into the forming mold, means for permitting the discharge of a portion only of said material, and means for automatically locking the forming mold against movement in an opposite direction, said means being automatically movable to an inoperative osition by the weight of material in the mo d.

13. In molding mechanism of the characv ter set forth, the combination with a vertically movable fornnng mold, of means for delivering material luto the top of the same,

means for successively discharging amounts of material less than the complete amount 1n the lmold from the bottom of said forming mold, means for elevating the sai.1 forming '935,678 i fV l mold, and a lock for automatically holding the forming mold against downward movement until material of a predetermined weight has been placed therein.

14. In moldinor mechanism of the character set forth, tne combination with a vertically movable forming mold, of means for elevating the same, means for directing material into the forming mold, means for automatically locking the forming mold in its elevated position until a predetermined amount of material has been delivered thereto, and means for delivering a portion only of such material from the forming mold when the same is unlocked.

15. In molding mechanism of the charactcr set forth, the combination with a finishing mold and a forming mold movable into and out of coaction with said finishing mold, of automatic means controlling its movement, a movable closure for the forming mold, and mechanism operated by the antomatie movement controlling means for ell'ecting the movement of the closure.

16. In molding mechanism of the character set forth, the combination with a finishing mold and a forming mold, movable into and out of coaction with each other, of a lever connected thereto, a spring engaging the lever to prevent movement of the forming mold until material of a predetermined weight has been placed therein, a closure for the bottom ofthe formino' mold, and means actuated by the lever or `actuating said closure.

17. In molding mechanism of the character set forth, the combination with a finishing mold and a forming mold movable into vanti out of coaction with the finishing mold,

of automatic means controlling its movenient and including a lever connected to the forming mold, and means actuated bv the lever for controlling the discharge o material from the formino' mold.

v18. In molding mechanism of the character set forth, the combination with feeding means, of a forming mold vertically movable toward and from the feeding means, a lever having an inclined track, means connected to the lever to elevate the forming mold toward' the feeding means, a swinging locking arm havino' a roller which operates on the track and Iiolds the forming mold lelevated until a predetermined amount of material has been placed therein, a closure for the bottom of the forming mold movably mounted on said mold, and automatic means operated by the lever for moving the closure on the movement of the forming mold.

19. In molding mechanism of the character set forth, the combination with a movable forming mold, of mechanism for moving the same in one direction, driving means for said moving mechanism having a clutch connection therewith, and automatic means for disconnecting the said mechanism from the driving means when the forming mold reaches a predetermined position.

20. In molding mechanism of the character set forth, the combination with feeding means. of a forming mold movable toward and from the same, mechanism for moving the forming mold toward the feeding means, driving means` for said mechanism having a detachable connection therewith, and anto. matic means for disconnecting said mechanism from the driving means when the forming mold reaches a coperative position with respect to the feeding means.

2l'. In molding mechanism of the character set forth, the combination with a movable forming mold, of mechanism for moving the same in one direction, driving means for said mechanism, a clutch for connecting and disconnecting the driving means and moving mechanism, and automatic means for operating said clutch to disconnect the mechani m from the driving means when the forming mold reaches a predetermined position.

2Q. In molding mechanism of the character set forth, the combination with a mold movable in opposite directions, ofmechanism for moving the mold in one direction, driving means detachably associated with the movingmechanism to oper: te the same, means for disconnecting the moving mechanism from the driving means when the `mold reaches a predetermined vposition in one direction, and means for connecting thc moving mechanism and driving means when the mold reaches a predetermined position in another direction. v

23. In molding mechanism of the character set forth, the combination with a mold movable in opposite directions, of mechanism formoving the mold in one direction, driving means for said mechanism, a clutch for connecting and disconnecting the moving mechanism and the driving means, means for operating the clutch to disconnect the moving mechanism from the driving means when 'the mold reaches a predetermined position in one direction, and means for operating the clutch to connect the driving means and moving mechanism when the mold reaches a predetermined position in an opposite direction.

24. In molding mechanism of the character'set forth, the combination with feeding means, of a mold vertically movable toward and from the feeding means, mechreaches a predetermined position in its means for operating the clutch to connect the moving mechanism and driving means when the mold reaches a predetermined position away from the feeding means.

25. In molding mechanism o the character set forth, t ic combination with feeding means, of a mold vertically movable toward and from the feeding means, mechanism for eilecting the movement o the mold toward the feeding means includinf a rotatable driven mem driving inembe member, a clutch for connecting the driving "and driven members, said clutch including a rotatable actuating device, and a stop movable into and out of the path of movement of the actuating device to etlect the movement of the clutch in order to connect an disconnect the driving and driven members. 26. In molding mechanism of the character set forth, the combination with feeding means, o a mold vertically movable toward and from the feeding means, a lever connected to the mold, a rotatable driven member for swinging the lever to move the mold toward the feeding means, a rotatable driving member, a clutch for connecting the members, an arm for moving the'clutch, a spring for moving the arm in one direction, and a stop movab e into and out of the path of movement of said arm to move it in an opposite direction.

27. In molding mechanism of theehar-4 acter set forth, the combination with a vertically movable mold, of a lever connected to the mold, a rotatablecam member for swinging the lever, a rotatable driving member, a clutch for connecting the driving and cam members, including an arm, means for auto matically moving the arm in one direction to connect the members, and a stop operate by the lever and movable into and out of the ath of movement of the arm for moving said arm to disconnect said members. 28. In molding mechanism of the character set forth, the combination with a mol movable in opposite directions, of mechanism for raising the mold, automatic means for disconnecting said mechanism from the mold, when raised and a lock for holding the mold raised against movement in an opposite direction until a predetermined amount of material has been placed in sai mold.

29. In molding mechanism of the character set forth, the combination with a vertically movable mold, of a swinging lever connected to the mold, mechanism connected to the lever for moving the mold in one direction, said mechanism -including a rotatable driven member, a rotatable driving member, a clutch connection between the members, means for operating the clutch to disconnect the members when the mold as ber, a rotatable reached a predetermined position, and a lock for holding the mold in said predetcrmine osition. i

30. In molding mechanism of the character set forth, the combination with feeding means, of a mold vertically movable toward and from the feeding means, a lcver'connected to the mold, mechanism for moving the mold toward the feeding means, inclut inor a rotatable crank member, a rotatable driving member, and a clutch detachably connecting the members, said clutch including an actuating arm, a stop operated by the lever and movable into and out of the` path of movement of the arm to disconnect the driving and crank members when the mol has reached a redetermined position with respect to the ceding means, and an automatic lock that. engages the lever when the mold reaches said position to hold it. against movement away from the feeding means, said lock being movable to an inoperative position when a predetermined amount of material has been placed in the mold.

31. In molding mechanism of the character set forth, the combination with a mold, of mechanism for feeding material thereto,

said mechanism including means movable with respect to the mold for compacting the material prior to its introduction into the mold.

32. In molding mechanism of the character set forth, the combination with a mold -support,-of feeding means located above the same, and a forming mold `haviig^a movement between the feeding means and the mold support and with respect thereto to compact the material delivered thereto by the feeding means prior to its passage to a mold placed upon the support.

33. In molding mechanism of the character set forth, the combination with a mo support, of feeding means located above the same, and a formnig mold having a movement between the feeding means and mold support and with respect to the same, sai forming mold having an open top to receive the material from the feeding means and having a bottom discharge and a movable gate controlling said discharge.

` 34. In molding mechanism o ter set forth, the combination with a mold support, of feeding means located above the same, a forming mold having a movement between and with respect to the feeding means and the mold support to compact the material delivered thereto by the feeding means prior to its passage to a mold placed upon the support, and means for ettecting the movement of the forming mold between the feeding means and the support.

35. Ina molding mechanism of the character set forth, the combination with a fixed finishing mold, of a movable forming mold alined therewith and having two dimensions the charac- Stuck bic-innig mazionethesanie as the finishing mold and having its third dimension greater than that of the finishing mold` a core extending in the direction of the third dimension of the forniing mold for forming the material into separate sections`- means for simultaneously feeding material into the spaces of the forming mold at opposite sides of the core, and means for feeding separate sections of material from the forming mold into the finishing mold.

36. In molding mechanism of the character set. forth, the combination with a fixed finishing mold, of a movable forming mold,

ter set forth, the combination with feeding means, of a mold support located below the saine, a mold movable between the feeding means and mold support, said mold having an inlet in its top and having a bottomv discharge, la sliding gate controlling the dis- Ocharge,--nieans for sliding the gatcto open position u'pon the downward movement of the mold, and means for closing the gate upon the upward movement of said mold.

38. In molding mechanism of the character set forth, the combination with a mold support, of feeding means located above the saine, a mold having a vertical movement between the mold support and the .feeding means, said forming mold having a bottom discharge, a sliding gate controlling` the discharge, a swinging lever connected to the gate, means for swinging the lever in one direction upon the elevation of the mold, and means operated by the mold to swing the lever in an opposite direction upon the downward movement of the mold. 39. In molding mechanism of -the character set forth, the combination with a vertically movable mold having a bottom discharge, of a sliding gate controlling the discharge, a lever connected to the gate, a rotatable member for swinging the lever in one direction, and a trip actuated by the in old .for swinging the lever in an opposite direction. v

40. In molding mechanism of the character set. forth, the combination with a vertically-movable mold having a bottom diseharre opening, of a sliding gate controlling the ist-.barge from said opening, and means having separate connections with the mold and gate for elevating the mold and closing the gate, and allowing the same to fall and opening the gate.

4l. 1n molding mechanism of the character set forth. the combination with a mold support, of feeding means located above the saine, a mold movable vertically between the mold support and. feeding.iiieaiis. a sliding gate constituting the bottoni of said forinlng mold, a lever having a plurality of arms, one of which is connected to the gate. means for elevating the. mold, another ot' said arms being engaged by the elevating means, and a trip disposed in the path of movement of a portion of the mold and connected te another arni of the lever.

l2. In molding mechanism of the character set forth, the combination with a mold support, of feeding means located above the saine, a vertically movable mold operating between the mold support and feeding means, a lever connected tothe mold, ro-

tating means for swinging the lever to elevate the mold, a gate constituting the bottom of said mold, a lever connected to the gate and having a portion disposed in the path of movement; of the rotating means, a trip connected to the lever and having a portion disposed in the path of movement of the mold, and a spring lock engaging the first mentioned lever for holding the mold elevated until a predetermined amount of material has been placed therein.

.-l. In molding meclianisinof the character set forth, the combination with a mold, of mechanism for feeding material thereto including means for compacting such material and forming core openings therein prior to the introduction of the material into the mold, and means for controlling the passage of material from the compacting and core opening means into the mold.

44. In molding mechanism of the character set forth, the combination with a mold, of feeding means including material carryingmeans movable toward and from a predetermined position, mechanism for thus moving said material carrying means, and means for automatically disconnecting the material carrying means from the moving mechanism when said carrying means reaches such osition.

45. In mol ing mechanism of the character set forth, the combination with movable carrying means having a discharge opening, of a movable closure for said discharge opening, operating means connected to the closure and automatically operated bty the carrying means on its movement to e 'ect the movetically-movable mold having ay bottom discharge opening,ofa reciprocatory gate operfalls to its lowermnst positicm, means for ating transversely to the mold and controlpreventing the passage of more materia ling said opening, and means connected wit-h therefrom upnn the raising of the mold, and the gate and having a portion disposed in means for delivering a fresh supply e'f ma- T5 thel path of movement of the mold for clostcrial into the upper end of the mold when .20

ing said gate. on the upward movement of the latter is in its uppermost position, equal the mold, and opening said 0'ate to discharge in amount to the material discharged from the contents when the moh has reached its the mnhl on that reciprncation.

lowermost position. In testimony that 1 claim theforegoing as if 1o 4T. In molding mechanism of the characmy own, I have hereto al'iixed my signature 25 Y ter set forth, a forming I'nold., means for in the presence of two witnesses. r

asing the mold and allowing it to drop to JOHN ALBERT MCXAMAR. compact the material therein, means for de- 'ltncsses: rw, liveringa section of molded material from Joux T. Blusen,

' 15 within the forming mold when the latter HENRY N. Suma.

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