US1127472A - Sand-handling machine. - Google Patents

Description

H. P. MACDONALD & H. C. PARKER.

SAND HANDLING MACHINE.

APPLICATION TILED JUNE 16, 1914.

Patented Feb. 9, 1915.

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H. P. MACDONALD & H.' G. PARKER.

SAND HANDLING MACHINE.

APPLICATION TILED JUNE 16,1914v 1,127,472, Patented Feb. 9, 1915.

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H. P. MACDONALD 8: H. C. PARKER.

SAND HANDLING MACHINE.

APPLICATION FILED JUNE 16, 1914 1, 1 27,472. Patented Feb. 9, 1915.

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HARRY P. MACDONALD, OF MONTCLAIR, AND HENRY C. PARKER, 0F ELIZABETH, NEW JERSEY, ASSIGNORS TO THE SNEAD & CO. IRON WORKS, 0F JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SAND-HANDLING MACHINE.

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Application filed June 16, 1914.

To all whom it may concern:

Be it known that we, HARRY P. MACDON- ALD and HENRY C. PARKER, both citizens of the United States, residing, respectively, at Montclair, in the county of Essex and State of New Jersey, and at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Sand-Handling ltlachines, of which the following is a specification.

This invention relates to a sand handling machine for use in sand molding operations and it has reference particularly to a machine for shaking out and riddling sand from a flask or other receptacle after a mold has been poured and the casting removed. Among the chief objects of the invention are the provision of an improved shake-out apparatus; the provision of improved sandriddling apparatus; the provision of improved means for actuating the shake-out and the riddle; and in general the provision of an improved arrangement of sand handling apparatus whereby the sand is shaken out of a flask and riddled over a dumping box or other form of container for re-use.

The foregoing together with such other objects as may hereinafter appear, or are incidental to our invention, we obtain by means of a construction illustrated in pre ferred form in the accompanying drawings wherein Figure 1 is a side elevation of our improved machine showing the shake-out mechanism in raised position; Fig. 2 is a plan view of the apparatus; Fig. 3 is an end elevation of Fig. 2; Figs. 1- and 5 are detail views showing the operative positions of certain of the parts; Figs. 6 and 7 are views similar to Figs. 4 and 5, but illustrate a modified form of our invention; Figs. 8 and 9 are diagrammatic views indicating the operation of certain of the parts; Figs. 10 and 11 are respectively a plan and an end elevation of a detail of our invention; and Fig. 12 is a side elevation of another detail.

Referring to Figs. 1, 2 and 3, it will be seen that our machine comprises a base block 7 at one end of which is arranged a table 8, to which is bolted the operating mechanism comprising a motor 9, a gearreduction device 10, and a crank shaft 11. Mounted on the base block 7 are four pedestals 12 arranged in pairs, one pair being Specification of Letters Patent.

Patented Feb. 9, 1915.

Serial No. 845,339.

located adjacent the table 8 and the other pair at the opposite end of the base block. The pedestals are connected and braced by cross rods 13 and longitudinal side plates 14, the whole constituting an open frame work. A horizontally reciprocating sand riddle, comprising a frame-work l5 and a screen 16 is mounted in the upper portion of this open frame-work in the following manner: At the four corners of the framework 15 are extensions or Outriggers 17, to

each of which is pivoted a supporting rod 18, the supporting rods in turn being pivoted to bearings 19 supported from the base block. It will be seen that the supporting means are so arranged that the riddle can be reciprocated in the frame-work. The means for reciprocating the riddle is a connecting rod 20, one end of which is fastened to the crank shaft 11 and the other end pivotally connected to the end of the framework 15.

Supported on the open frame-work above the sand riddle is a shake-out frame or saddle A which is adapted to support a flask 26. The shake-out saddle comprises a rectangular frame-work composed of end timbers 27, four castings 28 arranged at the ends of the timbers, and side plates 29 which are bolted o1 riveted to the castings 28. The shake-out saddle is supported against lateral displacement at the ends by means of the lugs 30 projecting up from the pedestals l2 and against which the castings 28 abut, as will be seen on inspection of Figs. 2 and 3. VJ hen the machine is idle, the castings 28 rest on the top faces of the pedestals 12 as indicated at 31 in Fig. 3. The shake-out saddle is also supported against displacement by means of the pins 32 which are mounted in the side plates 29, at substantially the central portion thereof, and which project through slotted plates or clips 33 fastened to the side-plates 14 of the open frame-work. The sandvis shaken out of the flask 26 by raising and dropping the saddle A. As the saddle is dropped, it impacts at the ends against the tops of the respective pedestals with considerable force and jolts the sand out of the flask. The mechanism for imparting this motion to the saddle will now be described.

Adjacent the top of each pedestal 12 is an inwardly projecting lug 34 and on the inner face of each casting 28 is a similar lug 35. At each corner of the machine is a toggle B comprising a link 36 and a link 37 respectively pivoted to the lugs 34 and 35 at one end, and to each other at the opposite end. Extending transversely of the sand riddle, substantially at its central part thereof, is a rod 38 which is securely held in place by means of the brackets 39 fastened to the top of the framework 15. (See Figs. 10 and 11.) On each side of the saddle is a pair of connecting rods 40 and 41 which are pivoted at their inner ends to the rod 38 and at their outer ends to the central pins 42 of the toggle B, the outer ends of the connecting rods having slots 43 in which pins 42 work. The operation is as follows: Since the rod 38 is fixed to the frame of the sand riddle, the rods 40 and 41 will operate the toggles when the riddle is'reciprocated. For example, if the riddle is moving to the right from the position indicated in Fig. 1, the connecting rods 40 and 41 will be moved with it, and when the links 36 and 37 of the toggles are drawn out past center, the pins 42 are free to slip to the right hand ends of the slots in the rods and the saddle will drop with a jolt. The parts have then assumed the position indicated in Fig. 8. On the return movement of the riddle, the connecting rods will straighten out the toggles and again raise the saddle. As the movement continues, the toggles will be drawn past center, the pins 42 will slip in the slots and the saddle will drop by the action of gravity and impact on the pedestals in the manner just described. The operation of the links will be clear on inspection of Figs. 8 and 9.

It will be seen from the foregoing that the flask will be raised and dropped with a jolt which thoroughly breaks up the sand in the flask and discharges it onto the reciprocating riddle, where it is further broken up and shifted through the screen. The mechanism is efficient and but one operating means is necessary for actuating both the shake-out saddle and the reciprocating riddle. After the sand has been shaken out and riddled, it is in condition for re-use. Any kind of transfer mechanism may be located beneath the riddle, but we prefer to provide a dumping box 44 such as shown in the drawings. The mechanism for handling the dumping box will now be described.

Referring to Figs. 1 and 3, it will be seen that we have provided a pair of tracks 45 Which extend transversely of the frame work, one being arranged adjacent each end thereof. Adjacent their inner ends the tracks 45 are pivoted to the struts 46, which extend transversely across the base block. The outer ends of the tracks 45 are raised and loweredby means of cam members 47 keyed to the rod 48 which is suitably supported on a base plate 49. A handle 50 is provided for turning the rod 48. The dumping box 44 is placed in a truck 51 which rides upon the track 45. When the outer ends of the tracks 45 are raised by the cams 47, the truck 51 rolls down the tracks into the lower part of the open framework and assumes a position beneath the riddle, and when the outer ends of the tracks 45 are lowered, the truck 51 and dumping box roll clear of the machine, permitting the dumping box to be removed by any desirable transfer means, such, for example, as a hoist.

In order to prevent the sand above the riddle from discharging at the ends of the machine as the riddle is reciprocated, we provide ballle plates 52, one of such plates being bolted between the pairs of pedestals at points adjacent to the ends of the riddle. It will be noted that the baffle plates are disposed at an angle so as to discharge any sandthat may be thrown out by the riddle into the dumping box.

Referring now to the modification shown in Figs. 6 and 7,'it will be seen that a slightly modified form of toggle means is substituted for that previously described. In the construction shown in these figures, a pair of links 53 and 54 are provided at the corners of the saddle frame, the links 53 being pivoted to the lugs 34 formed on the pedestals 12. The links are pivoted together, but the upper end of the link 54 is free. The connecting rods 40 and 41 are connected to extensions 55 ofthe links 53, and the links 54 are spring-held in the position shown in Fig. 6 by means of the springs 56 fastened to the framework 15 of the riddle. The castings 28 are provided with rollers 57 against which the free ends of the links 54 take in certain positions. Assuming that the parts at the right hand end of the machineare in the position shown in Fig. 6, and that the riddle is moving to the left, the links 53 and 54 will be drawn out and the distance etween their ends shortened until finally the springs 56 snap the links 54 into position with their upper ends engaging the un der faces of the rollers 57. Now assuming that the movement of the riddle is reversed, and it moves to the right the links 53 and 54 will be straightened out and the right hand end of the saddle frame will be elevated. As this movement continues, the abutments 58 see Fig. 12) on the links 54 take against the sides of the castings28 and the ends of the links 54 are thrust from beneath the rollers 57, thereby permitting the raised end of the saddle to drop. As this. movement to the right takes place, the toggles at the left hand end of the frame are drawn out and the links 54 are snapped in place, and when the movement is reversed, they will raise that end of the saddle and allow it to drop as already described. It will be seen that the ends of the saddle are alternately raised and dropped.

e claim:

1. A machine of the class described comprising in combination a movable riddle, a shake-out frame or saddle, a flask supported on the saddle above the riddle, and means for operating the shake-out saddle directly connected with the riddle whereby when the latter is moved the saddle is operated.

2. A machine of the class described comprising in combination, an open framework, a riddle in said framework, a flask supported on the framework above the riddle, a transfer receptacle located in the framework beneath the riddle in position to receive the sand fromthe riddle, and means for moving the receptacle.

3. An apparatus of the class described comprising in combination an impact membcl', a shake-out saddle, a flask supported on said saddle, and means adapted to cause the saddle to impact on the impact member to jolt the sand out of the flask.

4. An apparatus of the class described comprising in combination an impact member, a shake-out saddle, a flask supported on said saddle, and means for raising and lowering the saddle to cause it to impact on said member and jolt the sand out of the flask.

5. An apparatus of the class described comprising in combination, a reciprocating riddle, a shake-out mechanism adapted to support a flask above the riddle, means for raising and lowering said mechanism, a flask, and means against which the shake-out mechanism impacts when lowered to jolt the sand from the flask.

6. An apparatus of the class described comprising in combination, a reciprocating riddle, a shakeout mechanism adapted to support a flask above the riddle, a flask, toggle members for raising and lowering the shake-out mechanism, and means whereby the reciprocation of the riddle actuates the toggle members.

7. An apparatus of the class described comprising in combination. a reciprocating riddle, a shake-out mechanism adapted to support a flask above the riddle, a flask, toggle members for raising and lowering the shake-out mechanism, and means whereby the reciprocation of the riddle actuates the toggle members to raise and drop the shakeout mechanism.

8. An apparatus of the class described comprising in combination, a reciprocating riddle, a shake-out mechanism adapted to support a flask above the riddle, a flask, toggle members for raising and lowering the shake-out mechanism, and means for connecting the toggle members to the riddle so that the operation of the riddle actuates the toggles.

9. An apparatus of the class described comprising in combination, a frame, a reciprocating riddle therein, a shake-out mechanism for supporting a flask over the riddle, a flask carried thereby, toggle members which engage the frame and the shake-out mechanism, means for actuating the riddle, and connections between the toggle members and the riddle whereby when the latter is reciprocated the opposite ends of the shake-out mechanism are alternately raised and lowered.

10. An apparatus of the class described comprising, in combination, a reciprocating riddle, a shake-out mechanism adapted to support a flask above the riddle, a flask, means for raising and lowering the shakeout mechanism, and means whereby the reciprocation of the riddle actuates the means for raising and lowering the shake-out mechanism.

11. A machine of the class described comprising in combination a horizontally reciprocating riddle, a vertically movable shakeout saddle, a flask supported on the saddle above the riddle, and operating means for the saddle connected to the reciprocating riddle and transmitting a substantially vertical movement to the saddle whereby to shake out the sand therefrom.

12. A machine of the class described comprising in combination an open framework, a substantially vertically movable shake-out saddle mounted in the frame, a flask carried on said saddle, a horizontally reciprocating riddle mounted in the frame beneath the saddle, and means for raising and lowering the saddle.

13. A machine of the class described comprising in combination an open framework, a substantially vertically movable shake-out saddle mounted in the frame, a flask carried on said saddle, a horizontally reciprocating riddle mounted in the frame beneath the saddle, means for raising and lowering the saddle, a receptacle beneath the riddle, and a guard means at each end of the frame adjacent the ends of the riddle and extending transversely of the line of movement thereof adapted to deflect the sand discharged by the riddle into the receptacle.

In testimony whereof we have hereunto signed our names in the presence of the two subscribed witnesses.

HARRY P. MACDONALD. HENRY C; PARKER. Witnesses A. C. GREENLEE, ANeUs S. MACDONALD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

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