US1226256A - Equalizing-table. - Google Patents

Description

R. F. RINGLE.

EQUALIZING TABLE.

APPLICATION FILED NOV. 20. 1914.

Li. Patelited May 15, 1917.

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R. F. RINGLE.

EQUALIZING TABLE.

APPUcATxoN FILED Nov. 2o, 1914.

`,26,256 Patented May l5, 1917.

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ROBERT FRANKLIN RINGLE, zELENoPLE, PENNSYLVANIA, ASSIGNOR TO HERMAN PNEUMATIC MACHINE COMPANY, OF ZELIENOPLE, PENNSYLVANIA, A CORPORA- TION OF PENNSYLVANIA.

EQUALIZING- TABLE.

Specification of Letters Patent.

Patented May 15, 191'?.

Application led November 20, 1914. Serial No. 873,161.

To all fw 7mm t may] concern.'

Be it known that I, ROBERT FRANKLIN RINGLE, a' citizen of the United States, and a resident of Zelienople, in the county 0f Butler and State of Pennsylvania, have in* vented a new and useful Improvement in Equalizing-Tables; and I do hereby declare the followingl to be a. full, clear, and exact description thereof.

My invention relates to equalizing tables for use with sand molding machines of the 3arring type and of such construction as to readily conform to the surface of the pattern iiask to be carried thereon and which can then be locked in order to retain its position while the flask is being lowered from around said pattern.

The object of my invention is to provide a cheap, simple and eificient form of equalizing table for use with sand molding machines of the jarring type which will be able to conform to any reasonable surface of the flask and which will not require any adjustment or regulation but will assume the proper shape by pressure of the flask.

Another object of my invention is to provide an equalizing table which can be used independent of the jarring machine such as shown in the drawings, or whichcan be applied tothe lowering cylinder of a jarring machine of the type shown in the co-pending application of myself and William M. Austin, filed March 1, 1913, Serial No. 751.425.

My invention consists, generally stated, in the novel arrangement, construction and combination of parts, as hereinafter more specifically set forth and described and particularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains to construct, use and operate y my improved equalizing table, l will describe the same more fully referring to the accompanying drawings in which:

Figure 1, is a perspective view of a molding machine showing my improved equalizing table used in connection therewith.4`

Fig. 2, is an inverted plan view of my im,- proved equalizingl table for independent use.

Fig. 3, is a front view of the same.

Fig. 4, is a side view of the same.

Fig. 5, is a side view of one of the side beams.

Fig. 6, is a cross sectional view of the de-v vice on the line 6-6 of Fig. 2.

Like symbols of reference herein indicate like parts in each of the figures of the drawlng.

As illustrated in Fig. 1 of the drawing myy improved equalizing table A is intended for use principally with sand molding machines, consisting of the body 1 which has a table 2 and cylinders 3 for lowering and raising the fia-sl; 4 and containing the pattern and sand (not shown) as later eX- plained.

The equalizing table A consists of the frame 5, which is of any suitable design and is provided at a position near both ends of each side of the same with a friction pad 6 for frictionally engaging with friction pad 7 on the side beams S. The frame 5 has a round hole 9 extending through cach side of the same, and the side beams 8 have a vertical slot 9 through both of which the clamp rod 1() extends. One end of the clamp rod 10 is provided with thread 11 forreceiving a nut 1 2, while the other end of said rod is provided with an eye 13 which lits into a slot 14 in the cam 15 on the clamp lever 16. One of the side beams 8 is provided on the outer face of the same with a pair of lugs 17 between which the nut 12 fits and is thereby prevented from turning. The frame 5 is provided on one of the side faces of its cored. center 1S with a. pair of lugs 19, and the clainp rod 10 is provided with a rod. holder 20 which fits around said rod and is held in position thereon by means of the pin 21. VThe rod holder 2O is square in shape and fits between the lugs 19 on the frame 5, so that the clamp rod 10 is thereby prevented from turning.

At the center of each end of the frame 5 and extending outward therefrom is a lug 22 which is provided with a threaded hole 23 into which is threaded the spring holding stud 24. Both ends of the equalizing table are provided with an equalizing trally on studs 24, and, at their ends, en-

gage pads 28 on the side beams 8. The tension of the springs 25 exerted on the side beams 8 can be regulated by the nut 27 as will readily be seen.

At each corner of the frame 5 is an opening 29 which is defined by ribs 30 and each of said ribs is provided at the center of the same with a recess 31 for receiving the spindles 32 of the roller 33. By having the recesses 31 in each of the ribs 30 the rollers can be placed in such position to provide for the table being rolled longitudinally or crosswise. These rollers 33 are held in position and prevented from leaving the recesses 31 by means of the plate 34 covering the same and secured thereon by any suitable means such as the screws 35.

The operation of my improved equalizing table can be readily understood by reference to Fig. 1. After the pattern and iiask have been placed upon the table 2 of the molding machine and jarred until the sand in said flask has assumed the proper degree of solidity, said flask is clamped in the manner shown and connected with the cylinders 3 and elevated above the table 2 by turning the same by hand so that it is in the position shown in Fig. 1. The equalizing table which has been resting upon the rails 37 is now rolled over onto the table 2, where it is directly beneath the bottom of the flask 4. The cylinders 3 are now operated in order to lower the flask 4 until it strikes against the side beams 8 of the equalizing table A with just suliicient pressure to cause the side beams 8 to assume their proper positions on the follow board 36.

The side beams 8, vertically adjustable as they are on the clamp rod 10 by reason of the vertically slotted holes 9', are adjustable by the exerted pressure so that they conform accurately with that portion of the follow board with which they come in contact, and the ends of said beams supported only by the spring 25 can readily conform to the surface of the follow board against which they bear by overcoming a slight amount of the `tension of said springs.

When the' side beams 8 have thus been pressed by the weight of the flask, pattern, follow board,'etc. to where they conform with the surface of the follow board 36, the operator grasps the handles 16 and pulls the same outward, whereupon the cam l5 will draw the clamp rod l0 outward and cause the friction pads 7 on the side beams 8 to bear firmly against the friction pads 6 on the frame 5, so that the weight of the sand filled flask will not move the position of said side beams when the pattern is withdrawn.

The clamps 38 are now removed from the flask 4 and the pattern plate 2a is raised by the action of the cylinders 3, thus drawing the pattern from the sand. The Sand lled flask which is left resting on the equalizing table can now be rolled onto the rails 37, from whence it can be removed for pouring.

It will readily be understood that the table may be connected directly to a lowering cylinder as before referred to and as shown in the application Serial No. 751,425 and the side beams can be extended to any desired length for taking care of any sized flask.

It will also be understood that any variations in the surface of the follow board will be taken care of bythe side beams 8, which are independently mounted, so that when the pattern is withdrawn from the sand there will be no jarring or tilting which would disturb the molded sand.

It will also be at once apparent that the slots in the side beams through which the clamp bar extends will permit of the vertical movement of either of said beams independently of the other.

Various modifications and changes in the design, construction, and application of my improved equalizing table may be resorted to without departing from the spirit 'of the invention or sacrificing any of its advantages.

What I claim as my invention and desire to secure by Letters Patent is 1. An equalizing table comprising a transportable body portion, parallel side beams pivoted to said body portion and adapted to conform to the surface against which the same come in contact, springs on said body portion and engaging with said beams for normally fixing the position of said side beams, friction pads on said body and beams and means for locking said side beams in their assumed positions.

2. An equalizing table including a body member, parallel beams pivotally carried thereby, yieldable means terminally supporting said beams, means whereby said beams may be vertically adjusted, and means for locking said beams in adjusted position.

3. An equalizing table including a body member, rollers journaled at the corners thereof for transporting the table on and oil a molding machine, beams pivotally attached to the body member for vertical adjustment with' respect thereto, yieldable means normally maintaining the beams in horizontal position, and means for looking said beamsI against both swinging and vertical movement.

4. An equalizing table including a body member', parallel beams extending longitudinally with respect to the body member, transverse spring members terminally supporting the beams, means pivotally connecting the beams to the body member, said lo body member being vertically adjustable on said means, and a locking member carried by said means for holding the beams in adjusted position.

In testimony whereof, I the said ROBERT FRANKLIN RINGLE, have hereunto set my l5 Copies of this patent may be obtained for ve cents each, by addressing che Commissioner of Patents, Washington, D. C.

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