US784536A - Molding-machine. - Google Patents

Description

N0. 784,536. Y PATENTED MAR. 14. 1905-v J. N. & H. A. BATTENFELD.

MOLDING MACHINE.

APPLICATION FILED FEB. 25, 1904.

2 SHEETSSHEET 1.

No. 784,536. PATENTED MAR. 14, 1905. J. N. & H. A. BATTENF-ELD.

MOLDING MACHINE.

APPLICATION FILED FEB. 25, 1904.

2 SHEETS-SHEET 2.

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Patented March 14, 1905.

NITED STATES PATENT OFFICE.

JOHN N. BATTENFELD AND HARRIET A. BATTENFELD, OF CLEVELAND, OHIO, ASSIGNORS TO THE BERKSHTRE MANUFACTURING ZOMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

MOLDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 784,536, dated March 14, 1905.

Application filed February 25, 1904. Serial No. 195,267.

To a whom, it may concern:

Be it known that we, JOHN N. BATTENFELD and HARRIET A. BATTENFELD, citizens of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Molding-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to improvements in molding-machines of the type wherein a flask is placed upon a bed or pattern-plate and is moved under a sand-hopper, then under a press, where the sand is compacted about the patterns, and is finally moved outinto normal position, where it is accessible to the operator.

More specifically, however, the invention relates to an attachment for a machine of this type whereby the pattern-plate and the patterns are vibrated or jarred to loosen them from the sand and to certain other mechanism which is adapted to raise the flask from the pattern-plate and from the patterns thereon.

The invention may be summarized as consisting in the construction and combination of parts hereinafter described, reference being had to the accompanying drawings, which illustrate one form in which we have contemplated embodying our invention, and said invention is fully disclosed in the following description and claims.

Referring to the drawings, Figure 1 is a front elevation of a machine constructed according to our invention, and Fig. 2 is a central vertical section looking toward the left side of the machine as shown in Fig. 1.

Our improvement may be applied to a molding-machine of any type; but we have shown it provided in connection with one of the type wherein A represents the frame, B the press, and O the traveling bed, which is provided upon its under side with two pairs of racks C and O engaged by suitable gearing. This gearing consists of a driving-shaft N, driven from any suitable power mechanism, (not shown,) and carrying a pair of gears N, provided with crank-pins N, connected by suitable links N 2 with the press B. The gearing for moving the bed from forward or normal position to the extreme rearward position consists of a pair of gear-segments Q upon the driving-shaft N, placed in a manner such that they will engage pinions q rigid upon the projected ends of a counter-shaft g, which is provided within the frame with a pair of pinions Q2 in a position to engage the racks O upon the bed and move it to the rear, as stated. The shaft N is further provided with a pair of mutilated gears P, adapted to mesh with the pair of racks C, and the arrangement of the teeth upon these gears P is such that the sections of teeth 7) will move the bed from its extreme rearward position to a position under the press, where it will remain and permit the links N to reciprocate the member B of the press and compact the sand in the flask.

After this pressing operation the sections of teeth 9 upon these gears P again engage the racks O and move the bed from the press to its forward or normal position, when the flask may be removed. The sections of teeth upon these mutilated gears are just sufiicient in length to bring about these movements, while the spaces between them are also of sufficient length to allow for the pressing operation to be thoroughly accomplished, and upon the machine being again started after reaching normal position to allow suflicient time for the bed to return to extreme rearward position by the gearing for that purpose. Immediately upon the sections 7) of gear-teeth of the mutilated gears P accomplishing this final forward movement of the bed to normal position and the removal of the flask already filled and the replacing of an unfilled one, together with the throwing on of the power, the gearsegments Q engage the pinions q, rotate the counter-shaft q, operate the pinions (1 and shift the entire bed back to its extreme rearward position or in a position under the hopper 1).

The mechanism which forms the subject matter of this application is a vibrating device which is operated automatically and which is arranged to vibrate or jar the pattern-plate plate 0.

and the patterns insuch a manner. that the flask, with the sand compressed therein, may be easily removed and also a device for automatically elevating thefla'sk when it arrives at normal position away from the patterns, so that the removal may be accomplished without injury to the molded sand and with great facility.

The vibrating mechanism above referred to consists of a vibrator D, secured to the pattern-plate 0, carried by the bed C, in such a manner that the piston (Z therein may strike either of the lugs 0 on the under side of the Suitable valve mechanism is provided in the pipe cl, leading to this vibrator, whereby as the bed leaves the press the motor fluid will be turned on, and the patternplate will be vibrated or jarred to loosen the patterns until just before the bed reaches the normal or rest position. This valve mechanism consists of a cock E, provided in the pipe d and having on its stem a star-wheel e, which is arranged to engage either of the stops it (0. These stops are carried by bolts (6 which are arranged to be adjusted in the slot a in the frame A. The first stop a is located in such a position that as the bed and the flask are just moving from the press after the sand has been compacted therein one of the prongs of the star-wheel a will engage with this stop and the valve will be given a quarter-turn, which is suflicient to open it and set the vibrator in operation. The vibrator continues to operate until the valve reaches the stop a, when it will again be operated or given a quarter-turn and the pressure will be turned off. This last operation of the valve occurs just before the flask and the bed reach their forward position.

The stops (4 and a are loose upon the bolts (0 and are held against rotation when the bed is traveling in the direction just mentioned by pins a, but are free to be rocked in the other direction. A weighted arm a on each of these stops holds it normally againstits pin. WVhen the bed is traveling back and it is not desirable to have the' pattern-plate vibrated, the star-wheel 6 will sweep under both of the stops (0 and a, which turn on their bodies without operating the valve and are returned to normal position by the weighted arms just mentioned.

The mechanism for raising the flask from the pattern-plate will now be described.

Mounted in the bottom of the bed C is a pair of plungers F, which extend down below the bed, where they are provided with friction-rollers f. These rollers are arranged to travel in-a path which is interrupted by a pair of wedges G, carried by a block g, arranged to slide on a dovetailed tongue g, secured to the frame. This block g is held against the stop g by a spring 9 which abuts against the stop g*. The block is also provided with an upwardly-extending arm g (shown in dotted lines in Fig. 1) and projecting upward to a point where it may be engaged by an operating-lever H, which is pivoted toa standard 7L, secured to the frame.

Upon the upper end of the plungers F and within the bed is a plate J which is provided at either end with a yoke j, and these yokes extend up and support rails j adjacent to either side of the pattern-plate c. The flask M when placed upon the pattern-plate extends slightly beyond either edge thereof and over the rails so that any upward movement of the rails would tend to elevate the flask. Such a movement is given to the flask just before the bed reaches its extreme forward or rest position or when the frictionrollers f ride up on the wedges G. This operation renders the flask easily accessible and at the same time insures its straight upward movement from the pattern-plate and the patterns thereon. In order to lower the rails 7, the hand-lever H is thrown to the left and the block g is shifted tothe right until the wedges pass from under the rollers, whereby the plungers are permitted to fall, with the consequent result oflowering the rails. The machine is then in condition for asecond op'eration.

What we claim is- 1. In a molding-machine, the combination with a reciprocating bed, a press, a patternplate carried by-said bed, a vibrator carried by said plate, valve mechanism carried by said bed for controlling said vibrator, and means for operating said valve mechanism to start the vibrator as the bed is leaving the press and for turning off the pressure before it reaches normal or rest position.

2. In a molding-machine, the combination with a traveling bed having a pattern-plate for carrying the flask, a pair of rails at the edges of-said pattern-plate and arranged to engage the flask, a pair of yokes carrying said rails, a pair of plungers for supporting said yokes, a block having a pair of wedges and arranged to slide upon a stationary part of the machine, means for normally retaining said block in the path of said plungers, and means for moving said block out of the path of said plungers.

3. In a molding-machine, the combination with a frame, of a reciprocating bed, a pattern-plate carried thereby, a press, a hopper, means for moving said bed from its normal position to the hopper to the press and finally back to normal position, avibrator in connection with said pattern-plate, a controllingvalve for said vibrator, and means for operating said valve to set said vibrator in motion as the bed is leaving the press and to stop the motion of the vibrator before the bed reaches its normal position.

4. In a molding-machine, the combination with the frame, of a traveling bed having a pattern-plate for carrying the flask, a press, a hopper, means for moving said bed to bring said flask under the hopper, under the press and finally back to normal position, a vibrator secured to said pattern-plate, a pipe leading to said vibrator, a valve in said pipe and provided with a star-wheel upon its stem, a stop upon said frame arranged to engage said valve and set the vibrator in motion as the bed is carrying the flask from the press, and another stop for engaging said valve and stopping said vibrator before the bed reaches normal position.

5. In a molding-machine, the combination with the frame, of a traveling bed having a pattern-plate for carrying the flask, a press, a hopper, means for moving said bed to bring said flask under the hopper, under the press, and finally back to normal position, a vibrator secured to said pattern-plate, a pipe leading to said vibrator, a valve in said pipe and provided with a star-wheel upon its stem, a stop upon said frame arranged to engage said valve and set the vibrator in motion as the bed is carrying the flask from the press, another stop for engaging said valve and stopping-said vibrator before the bed reaches normal position, and means whereby said stops may be adjusted.

6. In a molding-machine, the combination with a frame, of a traveling bed having a pattern-plate arranged to receive the flask, a

press, a hopper, means for moving said bed to bring the flask under the hopper under the press and back to normal position, a vibrator on said patternplate,a controlling-valve there for, means for operating said valve to vibrate said plate as the flask is leaving the press and to stop the motion of said vibrator before said flask reaches its normal position, and means for raising said flask from said pattern-plate during the vibration of the same.

In testimony whereof we hereunto affix our signatures in the presence of two witnesses.

JOHN N. BATTENFELD. HARRIET A. BATTENFELD.

- Witnessesi J. B. HULL, B. WV. BROOKET'I.

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