US1454438A - Sand-feeding mechanism - Google Patents

Description

May 8, 1923. 1,454,438

' H. W. B. GRAHAM SAND FEEDING MECHANISM Original Filed Sept. 5, 1918 3 Sheets-v-Sheet 1 E I o 0 *Hill o O O [22 Veniceailorneu MxfiM May 8, 1923. 1,454,438

' H. w. B. GRAHAM SAND FEEDING MECHANISM Original FiledSept. 5, 1918 3 Sheets-Sheet 2 a f1; Vania?" m 1%. 0 M @Y @W/fi? aiioz ney bor costs are reduced Patented May 8, 1923.

warren stares,

1,454,433 PATENT; oFFi-le.

HENRY XV. B. GRAHAM, OF NEXV-IONDON, OHIO, ASSIGNOR T'O- THE.ARNOLD-CREAGER COMPANY, OF NEW LONDON,

OHIO, A CORPORATION vOF OHIO;

SAND-FEEDING: lvinonanrs a.

Application filed September 5, 1918 Serial No. 252,682. Renewed September 14;, 1921.

To all whom it may concern Be it known that I, HENRY W. B. GRAHAM, a citizen of the United States, residing at New London, in the county of Huron and State of Ohio, have invented certain new and useful Improvements in and Relating to Sand-Feedin Mechanism, of Which thefollowing is a specification.

My inventionrelates to a brick naking machine and particularly the mechanism for supplying sand for the empty molds.

One object of the invention is to provide improved means for delivering sand to the mold sanding mechanism, whereby the .sand can be properly fed and regulated to avoid aste and insure eliiciencyof operation.

Another object of the invention, isto, provide improved means for delivering sand to the mold sanding mechanism wherebyla and a uniform supply of sand maintained.

Another object of the invention is to, provideimproved' means for automaticallysupplying sand to the sand chamber of a sanding mechanism.

Anotherobject of the invention. isto, provide improved sand feeding. means for a sanding mechanism and. :to. operatively connect such meanswiththebrick machine, whereby thesand is replenished .in the sand chamber substantially. as fastas itis used for sanding the molds.

Other objects of the invention Will be apparentto those skilled inthe art to which my invention relates from thefolloiving description taken in. connectionwvith "the .accompanying drawings.

I have applied my invention, to apparatus wherein the molds are moved in anendless series to the filling, bumping, separating and sanding mechanisms, such for exampleas disclosed in my Letters. Patent of the .United States No. 1,341,798,patented June 1st,

For the purpose of illustration I have, in

the accompanying drawings, shown. andv herein described one form of mechanism embodying my invention.

Fig. 1 is a side elevation ofa brick male ing machine and a sanding mechanism having a sand delivery mechanism embodying my invention- Fig. 2 is a fragmentary sectional view on the line 2 2 ofFig. 1.

a s mi. No. 5 0,719.

Fig. 3 is a fragmentary side elevation.

Fig. 4 is a vertical section substantially on the line 4-4 of Fig. l.

Fig. 5 is a side view and feeding mechanism In the drawings, 1 indicates'as an entirety a briclemakingmachine, preferably of the soft mud, horizontal pug mill type. 2 indi-v cates the pug shaft extending longitudinally of the pug mill 1 and driven. by suitable mechanism indicated as an .entirety at 3.

4 indicates the charging chamber-inwhich a press platenoperates to force thematerial through a die (not shown) into suitable molds A. 5 indicatesa support to andover of the sand control partlv broken away. I

which the molds are moved, first to a position to be filled, andthen to. positions for bumping and emptying respectively. 6 indicates a mold push out connected t'oand reciproeated by a piti nan 6?, which isoperated by the driving mechanism 3, inv any suitable manner.

7 indicates as an entiretyasandingmechanism to which themolds are delivered after they are emptied. Of this mechanism, 7 indicates a sand ,chamber havingside alls 7* and a bottom and reargwall 7. The Wall 7 may be curved about the axis of the chamber to serve as a guide for the molds A,and to invert them, at least partially, to permit the loose or surplus sand to fall back into the chamber. 7 indicates revolving members which engage and move the molds through the chamber 7. The revolving members are preferablyso constructed that they tend to shovel thesand into the molds as they move through the chamber. On its rearside and near its. opposite ends the rear wall 7 is formed with a pluralityof openings 7 (two being shoWn) to which are connected thein ner ends of supply pipes8, respectively. 9 indicatesthe sand receiving. hoppers, one for each pipe ,8, to which ,the upper ends of the .pipes8 are connected. The hoppers t), may

may be secured to the framework 1 of the machine 1 in any well known manner.

10 indicates a receptacle, tank or bin into which a supply of sand may be placed. From the supply bin 10 leads achute or pipe 10 the lower end of which is connected to a sand control and feeding mechanism, in dicated as an entirety at 11. The sand placed in the bin 10 flows down the pipe 10 to the feeding mechanism 11, which in turn operates to feed the sand to the sand chamber 7 as fast, or substantially as fast, as the sand is removed therefrom as a result of its contact with and adherence to the walls of the molds.

Of the sand control and feeding mechanism, 11 indicates a casing comprising a rear wall 11 a front wall 11, and side walls 11, preferably formed integrally and forming a conduit 12. The rear wall 11 may be secured to the adjacent frame member 1 of the brick machine 1 by a plurality of bolts 11. 12 indicates a wall arranged to divide the conduit into two branch conduits 12 12 to correspond to the number of feed or supply pipes 8, connected to the sand chamber 7. The walls 12, 11 and 11 are preferably integrally connected together and formed with a transverse opening 13, for a purpose to be later set forth. The sand flowing down the pipe 10 enters the conduit 12 and then flows into the branch conduits 12 12 indicates openings formed in the front wall 11, one for each conduit. 12 through which the sand flows from the branches 12 as will be later described.

The walls surrounding the upper end of the conduit 12 are suitably shaped to receive and have connected to them the lower end of the chute 10 in any well known manner. 14 indicates a plate adapted to close the lower ends of the branchconduits 12*. The plate 14 is connected to a support 15 preferablv formed integrally with the casing 11. The plate 14 is arranged to close the lower ends of the conduits 12. but may be moved or adjusted relative to the rear wall 11 to form larger or smaller openings at the lower ends of the conduits 12 (see Figs. 8 and 9) and thus permit a larger or smaller amount of sand to escape therefrom into the hoppers 9, when desired. I

The purpose of the valve plate 14 is to permit a quantity of sand to flow into the sand chamber 7* to condition the apparatus for immediate operation when starting. In practice, it is customary to clean out the sand chamber several times each day. Accordingly, in re-starting the apparatus the valve plate 14 permits the operative to feed sufficient sand direct to the sand chamber 7 a and thus provide an adequate quantity to effect sanding of the molds, without the necessity of running the apparatus long enough to supply sand by the automatic feeding means about to be described. The control plate 14 is preferably slidably connected to the support 15 by a plurality of bolts 14. The plate 14 is formed with an elongated slot 14 which permits it to be moved or adjusted.

As shown in Figs. 5 and 9, the support 15 extends horizontally beyond the opposite sides of the casing 11 Along its front edge and also along its rear edge, at opposite sides of the casing, the support 15 is pro vided with vertical side walls 15 15 15*, which with the support 15 form a trough or shelf 15 to receive the sand flowing through the openings 12 The plate or side wall 15 may be connected to the support 15 by a plurality of bolts 15 while the side walls 1 may be cast integrally with the walls of the casing 11. .16 indicates a rock shaft mounted in the opening 13. The inner end of the shaft extends through an opening 1 formed in the adjacent frame member 1*.

17 indicates as an entirety operating connections between the rock shaft 16 and an operating element or member of the brick machine. The connections 17 are preferably operated by some element of the brick machine which operates or controls the movement of the molds A, such for instance as the mold push out 6, so that the feeding of the sand will be dependent thereupon and be in proportion to the number of molds operated upon. Of these connections 17 indicates an arm carried by the inner end of the rock shaft 16. The hub 17* of the arm is preferably secured to the rock shaft 16 by a set screw 17. The arm 17 depends downwardly far enough, so that its lower or free end is disposed in the path of movement of two spaced tappets 18, 18, carried by the mold push-out 6. I Each tappet 18 may com prise an angle member the foot section of which may be adj ustably secured to the push out 6 by a bolt 18 For this purpose the foot section of each tappet is formed with an elongated slot 18 (see Fig. 2) through which the adjacent bolt extends. As the mold push-out 6 reciprocates, the tappets engage with and move the arm 17 in opposite directions, and it in turn rocks the shaft 16 in the bearing opening 13. The shaft 16 may be formed with an oil duct 16* to which oil is supplied by a cup 19.

20 indicates a pusher secured to the outer end of the shaft 16, whereby it is swung back and forth thereby. The pusher may be secured to the shaft by a set screw 20 As shown in Figs. 5, 6 and 8, the pusher 20 ex tends down into the trough or shelf and moves longitudinally thereof, as it swings back and forth, to shove or push the sand, which flows through the openings 12 onto the shelf, toward its opposite ends. As the shaft 16 is arranged in a vertical plane disposed between the openings 12", the pusher will alternately engage the masses of sand llll which accumulate on the trough 15 oppositevthe openings 12 and push the sand ,to- Wards the opposite ends of the trough from which it will fall into the hoppers 9 and flow through the pipes-8 to the chamber 21 indicates valve plates, one for each opening 12?; The plates 21 may be raised and lowered to close or regulate the size of the openings 12 and thereby control the supply of sand to the trough 15. Each plate 21 is formed With an elongated slot 21 through which a bolt 22 extends to slidably and adjustably connect the plate to the front wall 11. At its upper end each valve plate 21 is bent outward to form a handle to facilitate its adjustment. The wall 11 maybe provided with a rib 23, the side Walls of which serve as guides for the plates 21. As the plates are independently adjustable, the amount of sand flowing through the open ings 12 can be controlled according to the amount required at different portions of the chamber 7. i Vhile I prefer to control the sand delivered to the hoppers .9 by means of the plates 21, the supply can also be advantageously controlled by adjusting the pusher 2O angularly on the rock shaft 16, whereby it will swing farther to one side of the vertical plane cutting the shaft 16 than to the other side thereof, and also by adjusting the l'appets 18 on the push out 6 to give the pusher 20 a longer or shorter throw.

In the operation of a mold sanding mechanism, it is advantageous to at all times maintain a certain amount of sand in the sand holding chamber through which the molds pass. To avoid waste as well as to insure efficiency, this quantity should not be too much or too little; My invention is designed not only to automatically feed the sand to the sand chamber but to feed it thereto in proportion to the amount being used for sanding the molds, whereby a supply of any required quantity can at all times be maintained in the sand holding chamber. It will be seen that I accomplish these results by opei'atively connecting the feeding mechanism with the mold push-out 6, which controls the forward feed of the molds and thereby determines how fast and how many molds shall pass through the sand chamber 7*. Accordingly, the sand is fed to the sand chamber 7 in proportion to the number of molds passing ther through; by regulating or adjusting the openings 12*, or other ad ustments above described, or both, the quantity of sand fed to the chamber can be adequately controlled to insure efficiency and a substantially uniform supply thereto equal to the amount being taken from the passage of themolds successively and continuously therethrough.

The feeding mechanism operates to feed the sand substantially uniformly and continuously to the hoppers 9 and pipes 8. By

adjusting the valve 'tions in construction the chamber by plates 21 the amount of sand flowing through-theopenings 12 can be increased or decreased'thereby providing for an increased or decreased supply to the chamber 7*, as may be desired; by adjusting the plates to form different sized openings delivered to different portions 12', the sand of the chamber can bevaried.

In addition to the extent in the operation of the apparatus sinceall manual labor required to look after more, waste of mum and the molds are properly sanded since an adequate supply of sand is con stantly maintained in the sand chamber.

To those skilled in the art of making mechanism of the class described, many alteraand widely differing embodiments and applications of my invention will suggest themselves Without departing from the spirit andv scope thereof. My

disclosures and the description. herein are purely illustrative and not intended to be p in any-sense limiting. j H a No 01211111 is made to the herein disclosed mechanisms for bumping, inverting, separating and sandingthe molds and separating the'molds and bricks as they form the sub ect-matter of my companion applications Ser. Nos. 228,6lO 81,425, 83,052 and What I claim is:

1. 1n mechanism of the class described, the comb nation with a brick'machine and a sanding mechanism therefor, of a source of sand supply, a conduit leading intol the chamber of said sanding mechanism, mechanism having a movable element engaging said source of supply for dis sand from charging it into said' conduit, and means for operating said. movable element.

In mechanism of the class described, the combination with a brick machine and a sanding mechanism thereforyof a source 1 a conduit leading into the of sand supply, chamber of said sanding mechanism, mechanism including a movable element engaging sand from saidsourceof supply for discharging it into saidconduit, means for adjusting said movableele nen t, and means for operating said movable element.

3. In mechanism of the class described, the combination with a. brick machine and a sandingjmechanism therefor, of a source of sand supply, mechanism haying a movable element engaging sand from said source of supply foi' disohai'gingiit to said sanding mechanism. means for controlling the. supply of sand from sa d source of supply, and

means for. operatingsaid movable element.

i In mechanism of the class described, the combination with a brick machineand a advantages; above referred to, it will also be understood that 1 am enabled to reduce labor costs to a material sanding mechanism therefor, of a source of means for adjusting said movable element,

andnieans for operating said movable element.

5. In mechanism of the class described, the combination of a brick making machine, a sanding mechanism, a sand supply bin, a conduit for sand leading from said bin, a trough into which the sand flows from said conduit, means, connected to and operated by said. brick machine, for feeding the sand from said trough into the chamber or said sanding mechanism.

6. In mechanism of the class described, the combination with a mold sanding mechanism having a sand chamber and a teed pipe connected thereto. of a source of sand supply including a chute. a shelt onto which the sand from said ciute is delivered, and means "for feeding sand from said shelf into said feed pipe.

7. in mechanism of the class described, the combination with a sanding mechanism, of a casing, formed with a delivery opening, means for supplying sand to said casing, means acting on the sand flowing through said opening to feed it to said sanding mechanism, and means for varying the size of said opening.

8. In mechanism of the class described, the combination with a sanding mechanism, of a casing, formed with a delivery opening, means for supplying sand to said casing, a shelf onto which the sand flows from said opening. and means acting on thesand on said shelf to feed it to said sanding mechanism.

9. In mechanism of the class described, the combination with a sanding mechanism, of a casing, formed with a delivery opening. means for supplying sand to said casing, a trough onto which the sand flows from said opening, and means acting on the sand on said trough to feed it from the opposite ends thereof to said sanding mechanism.

10. in mechanism of the class described, the combination with a sanding mechanism, of a casing formed with a delivery opening, means for supplying sand to said casing, a trough onto which the sand flows through said opening, and a reciprocating member acting on the sand on said trough to feed it therefrom to said sanding mechanism.

11. In mechanism of the class described, the combination with a sanding mechanism, of a casing, iiormed with a delivery opening, means for supplying sand to said casing, a trough onto which the sand flows from said opening, and a reciprocating member acting on the sand on said trough to teed it iirom the opposite ends thereof to said sand ing mechanism.

12. in mechanism or the class described, the combination with a sanding mechanism, oii a cat ng formed with two delivery openmeans tor supplying sand to said casing, a plate for controlling one of said openings, means acting on the sand flowing throughthe other opening to feed it to said sanding mechanism, and devices for adjusting said feed means.

18. In mechanism of the class described, the combination with a sanding mechanism, oi? a casing formed with two delivery openi1 gs, means for supplying sand to said casing, plate for controlling one of said openings, means acting on the sand flowing tirough the other opening to feed it to said. sanding mechanism, means for varying size of the last mentioned opening, and devices for adiusting said teed means.

i l. in mechanism of the class described. the combination with a sanding mechanism. o t a casing. formed with. a delivery openit-ig. means for supplying sand to said casing. a trough onto which sand flowing through said opening accumulates, a rock sh att, a pusher carried by said shaft and arranged to engage the sand on the trough and feed it therefrom to said sanding mechanism, and means tor rocking said shaft. I

15. In mechanism of the class described, the combination with a sanding mechanism. of a casing, formed with two delivery openings, means for supplying sand to s infeasing, a plate for controlling one of s id. openings, and means acting on the sand flowing through the other opening to "feed it to said sanding mechanism.

16. in mechanism of the class described, the combination with a sanding mechanism, of a casing, formed with two delivery openings. means for supplying sand to said casing, 21 plate for controlling one of said openings, means acting on the sand flowing through the other opening to feed it to said sanding mechanism, and means for varying the sis Te of the last mentioned opening. i

17. In mechanism of the class described. the combination with a sanding mechanism, ot a casing, ermed with two delivery openings, means for supplying sand to said casingyand means arranged between and acting on the sand flowing through said openings to feed it to said sanding mechanism. 4

18. In mechanism of the class described. the combination with a sanding mechanism, of a casing, formed with two delivery openings, means tor supplying sand to said casing, a shelf on which the sand flowing through said openings accui'nulates,

and means the sand to discharge it from said shell? for delivery to said sanding mechanism.

the combination with v of casing, formed with a plurality of de-.

19. In mechanism of the class described,

the combination with a'sanding mechanism and a pair of sand feed pipes connected thereto,.of a casing, formed with a delivery opening, means for supplying sand to said,

her to discharge it from the opposite ends thereof. I

20. In mechanism of the class described,

the combination with a sanding mechanism and a pair of sand fee-d pipes connected thereto, of a casing, formed with a delivery opening, means for supplying sand to said casing, a receiving member on which sand flowing through said opening accumulates, the opposite ends of said receiving member being disposed in operative relationship to the receiving ends of said pipes, means acting on the sand on said receiving member to discharge it from the opposite ends thereof. and means forvarying the size of said delivery opening. V

21. In mechanism of the class described, the combination with a sanding mechanism, and a pair of sand feed pipes connected thereto, of a casing, formed with a plurality of delivery openings, means for supplying sand to said casing, a receiving member on which the sand flowing through said openings accumulates, the opposite ends of said receiving member being disposed in operative relation to the receiving ends of said pipes, means engaging the sand on saidreceiving member to discharge it from the opposite ends thereof, and means for varying the size of said openings.

22. In mechanism of the class described, a sanding mechanism,

livery openings, means for supplying sand to said casing, a receiving member on which the sand flowing through said openings accumulates, and means movable longitudinally of said member and engaging the sand thereon to discharge it from said member for delivery to said sanding mechanism.

23. In mechanism of the class described, the combination with a sanding mechanism, of a casing formed with a pair of delivery openings, means for supplying sand to said casing, a receiving member on which the sand flowing through said openings accumulates, a rock shaft arranged between said openings, a member carried by said shaft and arranged to engage the sand on said receiving member to discharge it therefrom, and means for rocking said shaft.

24.. In mechanism of the class described, the combination with a brick machine having a mold push-out and a sanding mechanpipes, and means I acting on the sand on said receiving memopening, means for ism, of a casing formedwitli a pair of de-\ livery opening-s, means for supplying sand to said casing, a-receiving member on which the sand flowing through said openings accumulates, a rock shaft arranged between said. openings, a member carried by said shaft and arranged to engage the sand on said receiving member to discharge it therefrom, and connections between said mold pushout and said shaft for rocking the latter.

25. In mechanism of the class described, the combination with a brick machine having a mold push out anda sanding mecha nism, of. a vcasing casing, a receiving member on which the sand flowing through said opening accumulates, a shaft, a member carried bysaid shaft and arranged to engage the sand on said receiving member to discharge it therefrom, and connections between said mold push out and said shaftfor operatingithe latter, said connections comprising an armcarried b said shaft and a tappet on said mold push out for operating said arm.

26.'In mechanism of the class described,

the combination with a brick machine havformed with a delivery supplying sand to said inga mold push out and a sandingmecha nism, of a casing. opening, means for casing, a receiving memb sand flowing through said formedw-ith a delivery opening accumulates, a rock shaft,- a member carried by said shaft and arranged to engage the sand on said receiving member to discharge it therefrom, and 'COIIHGCUO-HS' between said. mold push out and said shaft for rockingthe lat-,7

ter, said connections comprising an arm carried by said shaft and a pair of tappets on said mold push out for operating said arm.

27. In mechanism of the class described, the combination with a sanding mechanism. of a casing, formed with a plurality of delivery openings, means for supplying sand to said casing, a receiving member arranged to receive sand flowing through one of said openings, valve devices for separately controlling the flow of sand through said openings, and means engaging the sand accumulating onsaid receiving member to discharge supplying nd to said 9x57 er on which theit therefrom for delivery to said sanding mechanism.

28. In mechanism of the class described, e

the combination with a sanding mechanism, of a feed pipe therefor, a casing formed with a pair of openings one of which is ar ranged to discharge sand into said pipe, a valve member for closing thelast mentioned opening, a receiver on through the other opening accumulates, said receiver having a discharge end operatively connected with said pipe, and meansfor dis-- charging sand from said receiver into said pipe.

29. In mechanism of the class described,

which sand flowing opening, a receiver on which with a pair of openings one of which is arranged to discharge sand receiver on which sand flowing through the other opening accumulates, said receiver having a discharge end operatively connected with said pipe, means for discha "ng sand from said receiver into said pipe,and

independently movable devices for closing the said openings.

31. In mechanism of the class described, the combination with a brick machine and a sanding mechanism therefor; of a source of sand supply, a conduit leading into the chamber of said sanding mechanism, mechanism. having a movable element engaging sand from said source of supply for discharging it into said conduit, and connections between an operating element of said brick machine and the movable element of said discharging mechanism for operating the said movable element.

32. In mechanism of the class described, the combination with a brick machine having step by step mold feeding mechanism into said pipe, a

and a sanding mechanism for sanding said molds, of means for feeding substantially predetermined amounts of sand successively to said sanding mechanism and means con nected with said mold feeding mechanism for actuating said sand feeding mechanism.

33. In mechanism of the class described, the combination with a brick machine, including means for feeding brick molds one after the other therethrough and sanding mechanism for sanding said molds, of means for supplying predetermined substantially measured quantities of sand stepby step to different portions of said mold. sanding mechanism.

34. In. mechanism of the class described, the combination with a brick machine, in cluding means for feeding brick molds one after the other therethrough and sanding mechanism for sanding said molds, of means actuated by said. brick mold feeding mechanism for supplying predetermined substantially measured quantities of sand step by step to different portions of said mold sanding mechanism.

35. In mechanism of the class described, the combination with a brick machine, including means for feeding brick molds one after the other therethrough and sanding mechanism for sanding said molds, of means for supplying substantially predetermined quantities of sand to said sanding mechanism actuated by said mold feeding means.

In testimony whereof I affix my signature, in the presence of a witness.

HENRY W. B. GRAHAM. Witness:

J. F. ATEN.

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