US1310359A - Blocks - Google Patents

Description

C. J. MANNELL AND R. ROSE.

MACHINERY EMPLOYED IN THE MANUFACTURE OF CONCRETE AND THE LIKE WALL BLOCKS. APPLICATION FILED FEB 18. 1919.

1 ,3 1 0,3 59. Patented July 15, 1919.

run COLUMBIA PLANOGRAPH ccn, WASHINGTON. D. c.

UNITED sTATEs PAENT oEEroE.

CHARLES JAMES NELL AND ROBERT ROSE, OF BOURNEMOUTH, ENGLAND.

MACHINERY EMPLOYED IN THE MANUFACTURE OF CONCRETE AND THE LIKE WALL- BLOCKS.

Specification of Letters Patent.

Patented July 15, 1919.

Application fi1ed.February 18, 1919. Serial No. 277,796.

To all whom it may concern:

Be it known that we, CHARLEs JAMES MANNELL and ROBERT RosE, subjects of the King of Great Britain, residing at Bournemouth, England, have invented certain new and useful Improvements in Machinery Employed in the Manufacture of Concrete and the like Wall-Blocks, of which the following is a specification.

This invention relates to hydraulic press machinery for the manufacture of wall blocks or the like made of concrete or other plastic material, and of the kind comprising a molding box, a rising and falling false bottom connected to a hydraulic plunger for pressing and ejecting the pressed block, and a covering lid held in the closed position by a pivoted arm engaging a catch on the lid, the said arm being designed to be automatically swung or turned for releasing the lid, when the pressing operationis completed.

Our invention has for its object to provide a machine whereby speed in manufacture may be increased by means of detailed improvements in certain parts of the machine as hereinafter set forth. 1 i

In practice, we make use of a hydraulic press for the molding of the block, which press comprises a molding chamber fitted with a sliding plunger (constituting a false bottom therein) upon which the concrete or other plastic material to be treated is received. When filled, this chamber is closed by a spring-controlled cover which is automatically released, after the requisite pressure has been applied, to permit of the block or molding being removed.

The sliding bottom aforesaid, within the molding chamber, is attached to a hydraulic ram which, when the water pressure is applied, forces the sliding bottom upward and compresses the material within the chamber between said sliding bottom and the cover of the mold to the extent desired, at which point a striking plate, moving upward and with the ram in its upward movement, makes contact with the lower end-of a lever pivoted to the outside of the molding chamber and causes the release of a catch formed on the upper end of said pivoted lever from engagement with the spring controlled cover which flies open automatically, and the further upward movement of the ram projects the compressed concrete or like block beyond the open mouth of the molding chamber, whence it is removed for the further stage of setting and dyeing.

And in order that our invention may be fully understood we will now proceed to describe same with reference to the accommolded is placed, Z) is a false bottom therein,

of a slidable fit, so as to be capable of a reciprocating vertical movement within the chamber a fromtheram c, to which it is connected, and which is operated by hydraulic pressure in known manner.

at is a cover to the chamber a hinged at e to the top edge of one end of said chamber. Thls cover d is formed with a projection beyond the hinge to which one end of a tension spring f is connected, the other end of which spring is fixed to a bracket 9 (or in other convenient manner) on the end of chamber a. The spring f tends to keep the cover d open. At the front edge of the cover d is fitted a dentated catch 71. which when said cover is closed is engaged by the projection 71 on the upper end of the lever or arm 7' vertically arranged and pivotally mounted at kto the front ofthe chamber a. m At its lower end the lever or arm j is bent at right angles as at Z and extends beneath the chamber a to a suitable distance. At its extremity it carries a roller or wheel on which is engaged by the striking plate n attached to the sliding plunger 71 (the bottom of the chamber a being suitably slotted for the passage therethrough of said striking plate attachment) when the plunger 6 is raised the requisite distance. This moves the lover or arm j on its pivot and releases the catch z, whereupon the action of the spring f raises the cover 03 on its hinge and the chamber a is open.

The chamber a regulates the shape and size of the block molded therein and is formed of two side plates between which the end plates at a are bolted. One of these latter is grooved and the other formed with a corresponding bead or projection (see Fig. 3,) on the inner surface which together form a key or looking arrangement on the molded blocks for securing them in position when used in building.

In operation, a palette board 0 is placed upon the plunger 6 and the concrete or other plastic material is fed into the chamber at until the latter is full. The material is then struck off level with the top edges of the chamber a and an upper palette board is then pressed into the mouth of the chamber until its upper surface is level with the top edge of the chamber, thus compressing the concrete or other material by the thickness of the board. I

The chamber a is then closed by the cover d and locked by the engagement of the catch 2' with the catch h. Hydraulic pressure is introduced from the bottom and the sliding plunger Z) rises in the chamber a and when at the desired height, and the material has been compressed to the extent required, the catch 2' is automatically released from engagement with the catch it on the cover by the action of the striking plate it against the roller or wheel m carried at the lower end of the pivoted arm 7'.

This action causes said arm j to turn on its pivot 70 and withdraw the catch 6 from engagement with the catch h on the cover. The spring 7" then operates to raise the cover 03 and the finished block ascends,

means of a three way cock 3) and the sliding bottom drops into position for refilling the mold.

Having now particularly described and ascertained the nature of our said invention, and in what manner the same is to be performed, we declare that what we claim is 1. In a mold, a movable bottom, a normally open hinged lid, a releasable latch for holding the lid closed, means for forcing the bottom upwardly, and means operable by a predetermined upward movement of the bottom to release the latch.

52. In a mold, a movable bottom, a normally open hinged lid, a releasable latch for holding the lid closed, a hydraulic ram for forcing said bottom upwardly, and means controlled by the movement of the ram and operable during upward movement of the bottom to release the latch.

3. In a mold, a movable bottom, a normally open hinged lid, a releasable latch for holding the lid closed having an angular extremity, means for forcing said bottom upwardly, and a striking plate carried by i the bottom and engageable with the angular extremity of the latch to release the latter upon a predetermined upward movement of said bottom.

4. In a mold, a movable false bottom, a normally open hinged lid, a releasable latch for holding the lid closed having an angular extremity, a hydraulic ram for forcing the false bottom upwardly, and a striking plate carried by the false bottom and operable by a predetermined upward movement of the latter to engage the latch and release the same.

In witness whereof we have signed the specification in presence of two witnesses.

' CHARLES JAMES MANNELL.

ROBERT ROSE. WVitnesses:

GEORGE HENRY HAYTI-IORN, OLIVE MAYE Soo'r'r.

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

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