US1028241A - Block-molding machine. - Google Patents

Description

A. MOHENGH.

. BLOCK MOLDING MACHINE. APPLICATION FILED JULY 13, 1911.

1,028,241 Patented June 4, 1912.

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A. MGHENG H. BLOCK MOLDING MACHINE.

APPLICATION FILED JULY 13, 1911.

' 1,028,241, Patented June 4,1912.

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ANDREW McI-IENCH, OF FARGO, NORTH DAKOTA.

BLOCK-MOLDING MACHINE.

T 0 all whom it may concern:

Be it known that 1, ANDREW MoHENoH, a citizen of the United States, residing at Fargo, in the county of Cass and State of North Dakota, have invented certain new and useful Improvements in Block-Molding Machines, of which the following is a specification.

This invention has for its object to pro vide in a block molding machine an improved carrier for the mold, the same being designed to simplify and expedite the op eration of the machine; and furthermore, to provide improved means for inserting the core into and withdrawing the same from the mold.

The invention also has for its object to provide in a machine of the kind stated, a novel construction and arrangement of parts to be hereinafter described and claimed.

In order that the invention may be better understood, reference is had to the accompanying drawings forming a part of this specification, in which drawings Figure 1- is a front elevation of the machine. Fig. 2 is a cross section on the line 2-2 of Fig. 1. Fig. 3is a plan view of the hopper hereinafter referred to.

Referring specifically to the drawings, 5 denotes a carrier on which the molds 6 are supported during the filling and tamping operation. The carrier is mounted on wheels 7 which travel on rails 8, the latter being so located that the carrier may be pushed under the filling and tamping apparatus and removed from under the same after the block is finished. The carrier is of sutlicient length to support two molds in order to expedite the operation, as will be presently described. The molds are rectangular boxes, which are open at the top and bottom, and seat on pallets 9, which latter are removably supported on the carrier. The shape of the mold boxes may be varied according to the shape of the blocks desired. The carrier supports cores 10, a separate core being provided for each mold. From the bottom of the cores extend vertical rack bars 11, which face each other, and between which is located a gear 12 in mesh therewith. It will therefore be seen that when the gear is rotated in one direction, one of the cores will be raised and the other lowered, and when the gear is rotated in the opposite direction, the first mentioned core will be lowered and the other one raised. The gear is supported Specification of Letters Patent.

Application filed July 13, 1911.

Patented June a, 1912.

Serial No. 638,386.

.of parallel joists or horizontal beams located a suitable distance above the floor, and

spaced from each other laterally. The joists are connected by cross pieces 18, and the latter support vertical beams or standards 19 which are spaced apart and are provided with guides in which the supporting frameof the tamping mechanism is mounted. This supporting frame comprises vertical bars 20 connected by top and bottom cross bars 21 and 22, respectively, suitably braced. The frame is slidable vertically between the standards 19, on opposite sides of which latter are secured guide strips 23, between which the bars 20 are slidably mounted. The joists 17 support the upper ends of the standards 19, the lower ends of which may be supported on the floor of the shed or other structure in which the machine is located.

The tampers are indicated at 24, four of such being provided as shown, and they being grouped to conform to the shape of the block to be molded. To the top of each tamper is secured a stem 25 which is connected to a rocker arm 26 fixed to a rock shaft 27 journaled in suitable bearings carried by the bars 20. These bars also carry bearings in which is ournaled a shaft 28 having a crank 29 which is connected by a pitman 80 to an arm 31 projecting from and fixed to the shaft 27. By means of this connection between the two shafts, the shaft 27 is rocked when the shaft 28 is rotated. On the last mentioned shaft is a pulley 33 which is connected to a suitable source of power. In the cross bar 22 are openings through which the stems 25 loosely pass, and in which they are guided when in motion. The tampers are reciprocated to operate on the material in the mold through the connection between the shaft 27 and the stems 25. The mechanism herein described is suspended from a pulley 34 by means of a rope or cable 35, connected at one of its ends to the cross bar 21, the other end of the cable being made fast in any suitable manner to support the mechanism. The pulley 34 is carried by one of the rafters 36 of the shed or other structure in which the machine is located. By thus suspending the tamping mechanism, it is possible to elevate the same after the block has been finished, the purpose of this being to raise the tampers out of the Way of the mold and thus facilitate the removal of the latter.

The filling mechanism comprises a spout 37 discharging into a box 38 which is stationary and has an open bottom. The box is situated above the mold to be filled so as to discharge thereinto. The material is discharged from a mixer 39 into the upper end of the spout, and the latter carries the material to the receptacle 38 through which it is discharged into the mold. In order to direct the material into the mold, a hopper 40 is loosely mounted on the top thereof. This hopper is carried by rods all passing loosely through the cross bar 22 and having their upper ends provided with nuts 4C2. In the hopper is a spreader 43 which covers the top of the core 10, and serves to scatter the material into the mold. The box 38 extends loosely through an opening 44 in the cross bar 22 so that the latter may be elevated and lowered with the tamping mechanism.

In operation, the tamping mechanism and the hopper 40 being elevated, the carrier 5 is pushed under the same to bring one of the molds 6 into filling position. The lever 15 is operated to insert the corresponding core 10 into the mold, and to retract the other core. It will be noted that the other mold is also in position on the carrier and the core of this mold is retracted. The tamping mechanism is now lowered, which places the hopper on top of the mold to be filled, after which the filling and tamping operation may be started. When the block is finished, the tamping mechanism will be elevated so that the tampers clear the mold. The cross bar 22, upon moving upwardly,

strikes the nuts 42, and through the stems 45 25 lifts the hopper 40 off the filled mold. The carrier may now be pushed sidewise to remove the filled mold from under the filling and tamping mechanism, and to place the other mold lnto position thereunder to be filled. The core is now inserted into the next mold to be filled, whereupon the core in the filled mold is withdrawn. The filling and tamping mechanism may now be lowered to operate on the next mold, after which the mechanism is elevated as before, to permit removal of the filled mold and the positioning of another mold for filling. The filled molds are opened and the blocks removed as fast as they are carried away from the filling and tamping 'mechanism, and they are replaced to be again filled.

It will be evident from the foregoing that the operation of filling the mold and tamping the material is easily and quickly effected,'the molds being placed in position for filling and removal of the blocks by pushing the carrier 5 back and forth.

I claim:

In a block molding machine, a vertically slidable frame including a cross-bar having an opening, a tamping mechanism carried by the frame, a mold, a stationary receptacle located above the mold and extending loosely into the opening of the aforesaid cross-bar, said receptacle receiving the material and delivering the same into the mold, a hopper loosely supported on the mold,

stems extending from the hopper and having a sliding engagement with the aforesaid cross-bar, and abutments on the stems above l the cross-bar.

In testimony whereof I aifix my signature in presence of two witnesses.

ANDREIV MOHENCH. Witnesses: F RED J. KRoGH,

PETER PIOKTON.

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

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