US830899A - Machine for molding concrete or cementitious building-blocks. - Google Patents

Description

PATENTED SEPT. 11, 1906.

'J. H. HENDRIGKSON.

MACHINE POE MOLDING CONCRETE 0R CEMENTITIOUS BUILDING BLOCKS.

APPLICATION FILED DEC. 3. 1904.

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' ATTORNEYS n1: NORRIS PETERs cm, wlsumorcv, 04 c PATENTED SEPT. 11, 1906.

J. H. HENDRICKSON.

MACHINE FOR MOLDING CONCRETE 0R GEMENTITIOUS BUILDING BLOCKS.

APPLICATION FILED DEC. 3. 1904.

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PATENTED SEPT. 11, 1906.

J. H. HENDRICKSON. MACHINE FOR MOLDING CONCRETE 0R CEMENTITIOUS BUILDING BLOCKS.

APPLICATION FILED DEO.3,1904.

6 SHEETS-SHEET 3,

WITNESSES:

" ii q dM wm/m/ mm ATTORNEYS RS co., WASHINGTON, n. cy

PATENTED SEPT. 11, 1906.

J. H. HENDRIGKSON. MACHINE FOR MOLDING CONCRETE 0 CEMENTITIOUS BUILDING BLOCKS.

APPLICATION FILED DEC. 3. 1904.

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No. 830,899. I PATENTED SEPT. 11, 1906.

J. H. HENDRIOKSON.

MACHINE FOR MOLDING CONCRETE OR GEMENTITIOUS BUILDING BLOCKS.

APPLICATION TILED DEG.3,1904.

5 SHEETS-SHEET 5.

WITNESSES.-

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UNIED s rarns PATENT orrroni.

JOHN H. HENDRICKSON, OF CLEVELAND, OHIO, ASSIGNOR TO THE HYDRAULIC PORTLAND ROCK COMPANY, OF CLEVELAND, OHIO,

A CORPORATION OF OHIO.

MACHINE FOR MOLDING CONCRETE 0R CEMENTITIOUS BUILDING-BLOCKS.

Specification of Letters Patent.

Patented Sept. 1 1, 1906.

Application filed December 3, 1904. Serial No. 235,379.

To aZZ whmn, it may concern:

Be it known that I, JOHN H. HENDRICK- SON, a citizen of the United States of America, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Machines for Molding Concrete or Cementitious Building-Blocks; and I hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whichit pertains to make and use the same.

This invention relates to improvements in machines for molding concrete or cementitious building-blocks.

Ono object of this invention is to provide a block-molding machine whereby the manu facture of hollow concrete or cementitious buildingblocks is facilitated.

Another object is to provide a block-molding machine which is simple and durable in construction and reliable and efficient in its operation.

Another object is to provide a block-molding machine comprising a bed or table, a mold adapted to rest upon the table and capable of being lowered over and hoisted from the table and swung laterally, and a crane for swinging the mold in a horizontalplane and provided with hoisting and lowering tackle with the mold rotatably supported from the said tackle and capable of being turned down side up when the mold is removed or separated from the table to the required extent.

Another object is to form a hollow concrete or cementitious building-block face downward by and within a mold having its upright walls pivoted to the mold-bottom and capable of swinging outwardly to cover the mold by a pallet when the mold has been filled with the concrete or cementitious material required to form the block; to hoist the covered mold, when the block has been formed in the mold, from the bed or table supporting the mold during the formation of the block and thereupon swing the hoisted and covered mold from over the table, then to turn the mold down side up and bring the cover-forming pallet employed in covering the mold into a supporting position below the block and then to open the mold by causing the upright walls of the mold to swing outwardly to free the block and permit the block to be removed with the pallet to any convenient place.

Another object is to provide the ends of the block with recesses or cavities having the dimensions and arrangement required to accommodate a convenient application of the hands of the workman employed in carrying and setting or laying the block in the building of a wall or structure of building-blocks.

Another object is to render the cores employed in the formation of the holes in the block adjustable laterally, vertically, and circumferentially and to provide simple and efficient means for securing the said cores in the desired adjustment.

With these objects in View and to the end of realizing other advantages hereinafter appearin'g'this invention consists in certain features of construction and combinations of parts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figures 1 and 2 are elevations taken at a right angle to each other, partly in section, of a machine or apparatus embodying my invention. Fig. 3 s a top plan relative to Fig. 2, partly in section. Fig. 4 is a vertical section on line 4 4, Fig. 2, looking in the direction indicated by the arrow. Fig. 5 is a top plan, in horizontal section, on line 5 5, Fig. 2. Fig. 6 is a vertical section on line 6 6, Fig. 1, looking in the direction indicated by the arrow. Fig. 7 is a side elevation, largely in section, illustrating the crane for swinging the mold in a horizontal plane and provided with means for hoisting and lowering the mold and shows the mold delivered down side up onto a truck.

My improved machine or apparatus is designed more especially for use in the making of hollow building-blocks of cementitious material, and, referring to the drawings, A indicates the stationary framework, provided at the top with a horizontally-arranged bed or table a.

A' mold is shown removably seated upon the table a in Figs. 1, 2, 3, 4i, and 5, and the bottom I) of the chamber of the mold, as shown very clearly in Figs. 2 and 4, rests upon the table a. The mold-bottom b and the table a are provided with mutually-engaging projections and holes to prevent displacement of the mold-bottom'in a horizontal plane on the said table when the mold is placed in position upon the table. As shown in Fig. 2, the mold-bottom b is provided with depending pins or projections 12, which ,engage holes 13, formed in the table a. The mold illustrated is rectangular in plan, and consequently designed for use in making a rectangular building-block, and the end Walls 14 and the side walls of the mold-that is, the upright walls of the chamber of the moldare hinged or pivotally attached at their lower ends to the bottom I) to render the said walls capable of being swung laterally and outwardly. Preferably the upright moldwalls 14 and 15 abut in their inwardly-swung and perpendicular or normal position against the edges of the mold-bottom b and are provided at their lower ends with depending ears or lugs 16, pivoted horizontally, as at 17, t0 ears or lugs 18, which are integral with and project outwardly and downwardly from the mo d-bottom b, and the arrangement of the parts is such that the said mold- walls 14 and 15 are capable of being swung laterally and outwardly against stop-forming projections 20, formed upon the lugs 18 and arranged to limit the outward swinging of the said walls. The side walls 15 of the mold are arranged, preferably, between the end walls 14 of the moldthat is, the end walls 14 preferably overlap the'adjacent ends of the side walls 15, as shown very clearly in Fig. 5, and are provided at thir inner sides with recesses 22, engaged by the ends of the side walls 15.

The table a is slotted or cut away, as at 23, to accommodate the location of the ears or lugs 18 of the mold-bottom b and the pivotal connection to the said lugs of the mold- walls 14 and 15, as shown in Figs. 2, 3, 4, and 5.

Hooks D are pivoted horizontally at the outer sides of and to the side walls 15 of the mold, as at d, and are arranged to overhang lugs- 24, with which the end walls 14 of the mold are provided, andv thereby hold the said.

walls 14 in their inwardly-swung and perpendicular or normal position, and obviously the engagement of the hooks D with the lugs 24 and the engagement of'the ends of the moldwalls 15 with the recesses 22 in the moldwalls 14 are instrumental in effectually holding the mold- walls 14 and 15 in their perpendicular or normal position.

The building-block made within the mold is formed with its face next the mold-bottom l7, and consequently the said bottom has the configuration or design required to form the face of the block. It will be observed, therefore, that in charging the mold to make a building-block the face-forming material is first fed into the mold so as to form upon the mold-bottom b a layer m of facing-forming material, (see Figs. 2 and 4,) whereupon the coarser material M employed in forming the body portion of the block is fed into the mold and compacted upon the facing-forming layer ;*but before the material employed in forming the body portion of the block is fed into the mold cores C, adapted to form cavities, chambers, or holes it (see Fig. 3) in the block, are inserted in the mold, which cores are shown only in Figs. 1, 3, and 6.

As the chambers or holes formed in a build ing-block should extend vertically through the block and as the mold of my improved machine or apparatus is arranged to form the block face side down, the cores 0 are arranged to pass into the mold horizontally between the upper and lower ends of the mold.

Each side wall 15 of the mold illustrated is provided (see Figs. 2, 3, and 5) with three lateral apertures or holes 25, suitably spaced longitudinally of the mold and registering with the apertures or holes 25 formed in the opposite side wall 15 of the mold, and three parallel cores 0 are arranged horizontally and at a right an le to the mold and in position to enter the di erent holes 25, respectively, in one of the mold-walls 15 and penetrate the mold horizontally and pass into engagement with the different apertures or holes 25, respectively, in the other mold-wall 15. I

The cores C are borne by a head G, with WlllOll one end of a horizontally-arranged endwise-mo vable rack g is provided, to which head the said cores are secured, as will hereinafter appear. The rack g is arranged parallel with the cores C, with its teeth on top, and (see Figs. 1 and 3) engages a correspondingly-arranged slideway 30, formed in the outer end of an arm or bracket is, with which a vertically-movable slide K is provided. (See Figs. 1, 2, and 3.) The slide K engages a correspondingly arranged slideway 32, with which the stationary framework A is provided. Displacement of the slide K from the slideway 32 is prevented in any approved manner. A verticallyarranged screw 6, which engages with the threads of and extends through a nut f, which is rigid with the said framework, extends into the slide K, and is attached to the said slide in any wellknown manner to accommodate turning of the screw in the slide. It is obvious, therefore, that the rack-bearing arm or bracket k,

and consequently the rack g and connected cores 0, are simultaneously adjustable vertically to accommodate an accurate adjustment of all of the cores vertically relative to the holes 25 in the side walls 15 of the mold into which the said cores are to be inserted. The arm or bracket 7:: is provided at each side with a standard 33. The standards 33 afford bearing to a shaft R, which 1s arranged horizontally above and transversely of the travel of the rack g and operatively provided be tween the standards with a pinion 1*, which meshes with the said rack. The shaft R 'is operatively provided at each end with a shaft. 1

' The head G is provided, as shown in Figs. 1 and 6, with three parallel slots or recesses 35, open at the face of the said head, which recesses are suitably spaced apart vertically and extend longitudinally and from end to end of the head. The recesses 35 are enlarged vertically, as at 36, within the head G. The head G is arranged parallel with the mold, and consequently at a right angle to the cores 0. Each core C is provided at the face of the head G with two flanges 37 and 37, arranged at opposite sides, respectively, of the core and extending from top to bottom of the core, and bolts P extend through holes 38 in the said flanges into one of the recesses 35 and are arranged with their heads engaging the enlarged portion 36 of the respective recess. As shown, the central recess 35 1s engaged by the bolts P, and nuts Q are mounted on the shanks of the bolts and ar ranged to clamp the flanges 37 against the face of the head G, and thereby firmly but removably secure the cores C to the head. The bolt-holes 38 in the flanges 37 are elongated vertically to accommodate a vertical adjustment of each core C upon loosening the nuts Q, employed in clamping the said core to the head G independently of the other cores.

It is obvious that the slots or recesses 35 in the head G accommodate a readjustment of the cores C laterally and that the bolts P and nuts Q are employed in securing the cores in the desired lateral adjustment. It will be observed also that the slots or recesses 35 and the vertical elongation of the bolt-holes 38 accommodate a readjustment of the cores circumferentially and that the bolts P and nuts Q constitute the means for securing the cores in the desired circumferential adjustment, as well as in the desired lateral adjustment.

By the construction hereinbefore described it will be observed that the cores 0 can be nicely adjusted relative to the holes 25 in the side walls 15 of the mold.

The cores G illustrated taper somewhat toward their free ends to render them capable of being readily withdrawn from the building-block formed in the mold, and obviously the holes 25 in the mold-walls 15 should have the dimensions or contour required to enable the cores to snugly fit them when the cores are in position within the mold.

Means whereby the mold is capable of being swung in a horizontal plane and actuated vertically is provided, as will hereinafter appear; but of course the cores C are removed from within a laden mold preparatory to the removal of the laden mold from the table a. Preferably preparatory to the removal of the laden mold from the table a the mold is closed on top by a cover forming pallet a. (Shown resting in Figs. 1, 2, 3, and 4 upon the upper ends of the upright walls 14 and 15 of the mold and held downwardly upon the walls by suitably-applied spring-hooks w.) Each end wall 14 of the mold is provided at its outer side with a trunnion 40, which is arranged horizontally and in line end'wise with the trunnion of the other end wall of the mold, and the hooks 20 have bent ends 42 arranged to engage the under sides of the trunnions 40, as shown in Fig. 2, and the opposite ends 43 of the said hooks are bent to project over and bear downwardly upon the pallet a when the latter operates as a cover.

The apparatus employed to swing the mold in a horizontal plane and to move the mold vertically comprises a horizontally-swinging crane ac, supported from the framework A andarranged to overhang the mold. The crane 9c is provided with a winding-drum 45, arranged in suitable proximity to the framework A. The crane 9c is provided also with guide-sheaves 46, arranged between the drum 45 and the free end of the mold-overhanging portion of the crane. The crane :1: is provided also with hoisting and lowering tackle which comprises a bar y, arranged over and longitudinally of the mold, which bar is provided at the top and centrally between its ends with a guidesheave 50. A' cable 47 is fixed at one end, as at 48, to the free end of the mold-overhanging portion of the crane, thence leads to and in'under the sheave 50, thence to and over the sheaves 46, and thence into operative engagement with the drum 45. Two hangers 52 and 52 depend from opposite ends, respectively, of the bar 1 and are pivoted horizontally, as at 53, to the said bar. The trunnions 40 of the mold have bearing in the different hangers 52 and 52, respectively. The bearing-forming lower end of each hanger 52 is preferably in the form of a hook 54, embracing the lower portion of the engaging trunnion and engages an annular recess 55, with which the said trunnion is provided. The mold is therefore rotatably supported from the hangers 52, and obviously the mold is hoisted or lowered according as the drum 45 is actuated in the one direction or the other, and the mold when free to be swung laterally is actuated laterallyin the one direction or the other, according as the crane it is swung laterally in the one or the other direction. In Fig. 7 the crane 0c is shown swung laterally to and over a truck 56, with the mold lowered onto the said truck and with the spring-hooks w removed.

Each end wall 14 of the mold, as shown in Figs. 3, 5, and 7 is provided at its inner side and centrally between theupper and lower ends of the mold with a plate 57, removably secured by means of screws 58, as shown in Fig. 5, to the said wall. The said plate 57 extends horizontally and transversely of the said wall from side edge to side edge of the wall and is provided at its inner side with two inwardly-projecting parallel ribs 60, which are arranged vertically and trans versely of the said plate near opposite ends, respectively, of the plate. The plates 57 of the mold-walls 14 are instrumental in forming recesses 62, as shown in Fig. 7, in the ends of the building-block formed by and within obvious that the recesses 62 will extend from top to bottom of the block when the block is made a part of a wall or structure, and the said recesses 62 and the cavities 63 conveniently accommodate the location of the hands of the workman in setting or laying the block.

In Fig. 3 and in solid lines, Fig. 1, the cores C are shown removed from the mold, whereas in dotted lines, Fig. 1, the said cores are shown in position within the mold. A hollow building-block is shown formed within the mold in Figs. 2. 3, 4, 5, and 7. In Figs. 1, 2, 3, 4, and 5 the laden mold is shown in the same position upon the table a. In Fig. 7 the mold is shown transferred from the table (1 onto the truck 56, and in dotted lines, Fig. 7, the bar y is shown hoisted enough to permit the swinging of the upright walls 14 and 15 of the mold outwardly against the stop-forming members 20, and the end walls 14 are shown thus swung in dotted lines in the said figure, but of course the side walls 15 swing outwardly with the end walls 14 to adequately release the block within the mold and the end walls 14 swing outwardly far enough to remove the ribbed plates 57 from the said block. The axes of the pivotal connections between the upright walls 14 and 15 of the mold and the mold-bottom b are arranged far enough outwardly from a point centrally between the inner and outer sides of the said walls to cause the said walls to loosen by gravity when the mold is turned down side up and the said walls are free to be swung outwardly.

The operation of the apparatus hereinbefore described is as follows: The mold is placed upon the table a with the projections 12 of the mold-bottom in engagement with the holes 13 in the said table, and the upright walls of the mold are secured in their inwardly-swung and perpendicular or normal position, as hereinbefore described, whereupon the cores C are adjusted accurately relative to the apertures or holes 25 in the side walls of the mold and then passed into their operative position within the mold. The mold is filled with the concrete-or cementitious material required to form the buildingblock to be molded, whereupon the mold .is covered by the application of the cover-forming pallet u, which is secured in its moldclosing position by the application of the springhooks to. Thereupon the winding-drum 45 of the crane a: is rotated in the direction required to hoist the mold far enough to free the depending members of the mold-bottom from the table a, whereupon the crane is swung to transfer the mold to and over the truck 56, where the mold is turned down side up and then lowered onto the said truck. The spring-hooks 'w are then removed and the hooks D rendered inoperative, whereupon by somewhat hoisting the bar y the upright Walls of' the mold will be swung outwardly to release the building-block upon the pallet u and to remove the recess-forming plates 57 of the end walls of the mold from the block. Thereupon the mold is hoisted clear of the block, which is then moved with the pallet u to any desired place. The empty mold is then returned to the table a for molding another buildingblock, and another cover-forming pallet is provided'for the said block. g

It will be observed that the mold is removable from the hangers 52 and that the moldbottom I) is formed by a face-plate having its upper side provided with the desired con figuration or design and that the upright walls of my improved machine are pivoted to the mold-bottom-forming face-plate.

I would here remark that the plates 57 of I the end walls of the mold have their longitudinal edges beveled to readily accommodate the withdrawal of the said plates from the block formed in the mold. I wouldremark,

furthermore, that the removability of the R cores 0 from the head G is important to ac commodate the substitution of cores of a different size or contour and that the vertical adjustability of the cores 0 independently of each other is important to accommodate their use in the formation of holes out of line laterally or staggered.

What I claim is 1. In a machine for molding buildingblocks or artificial stone, a stationary framework comprising a table; a mold loosely mounted on the table and having its upright walls pivoted horizontally to the bottom of the mold so as to render the said walls .capable of swinging laterally and outwardly, and means for holding the said walls in their inwardly-swung and normal position, and the mold-bottom and the table being provided with mutually-engaging holes and projections to prevent horizontal displacement of the mold upon the table.

2. In a machine for molding buildingblocks or artificial stone, a suitably-supported movable mold which has its upright walls pivoted horizontally to the bottom of the mold so as to be capable of swinging laterally and outwardly, which mold is provided ICC externally with trunnions; bearings for the side of the trunnions and having members for engaging the upper side of the pallet or cover when the latter is in its mold-covering position.

3. In a machine for molding buildingblocks or artificial stone, a rotatably-supported mold which has laterally and outwardly swingable upright walls means for removably holding the said walls in their inwardlyswung and normal position; means for limiting the outward swinging of the walls; the cover-forming pallet for covering and thereby closing the mold; means for holding the said pallet or cover in its closed'position during the turning of the mold down side up, and the axes of the pivotal connections between the upright walls of the mold and the mold-bottom being arranged outwardly from a point centrally between the inner and outer sides of the said walls.

4. In a machine for molding buildingblocks, a mold rectangular in plan and turnable down side up, which mold has its end walls pivoted to the bottom of the inold so as to render it capable of swinging laterally and outwardly, which walls are each provided, at its inner side and centrally between the top and bottom of the mold, with an inwardlyprojecting member, and means for holding the end walls of the mold in their inwardlyswung and normal position, and means whereby the said walls, when the mold is turned down side up, are caused to swing, if free to swing, outwardly far enough to remove the aforesaid inwardly-proj ecting member of each end wall from between the side walls.

5. In a machine for molding buildingblocks, the combination, with a horizontallyarranged endwise-movable rack provided at one end with a head; means for actuating the rack; a core for forming a hole in the buildingblock, which core is borne by the aforesaid head; stationary framework provided with an upright slideway a slide engaging the said slideway and provided with an arm or bracket bearing the aforesaid rack, and means for raising and lowering the slide.

6. In a building-block-molding machine, the combination of a horiZontally-shiftable head provided in its face with a horizontal slot or recess open at the said face and enlarged vertically within the head; a horizontal core supported from the head and provided at the face of the head with laterallyprojecting flanges having bolt-holes in registry with the aforesaid slot or recess; bolts extending through the bolt-holes into the slot or recess and arranged with their heads within the aforesaid enlarged portion of the slot or recess, and nuts mounted on the shanks of the bolts and arranged to clamp the aforesaid flanges against the head 7. In a machine for molding buildingblocks, the combination of a head provided in its face with a horizontal slot or recess open at the said face and enlarged vertically within the head; a core supported from the head and provided at the face of the head with laterally-projecting flanges having boltholes in registry with the slot or recess; bolts extending through the bolt-holes into the slot or recess and arranged with their heads within the aforesaid enlarged portion of the slot or recess, and nuts on the shanks of the bolts and arranged to clamp the afore said flanges against the head, and the boltholes being elongated vertically substantially as and for the purpose set forth.

In testimony whereof I sign the foregoing specification in the presence of two witnesses.

JOHN H. HENDRICKSON.

Witnesses:

O. H. DORER, B. 0. BROWN.

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