US1636253A - Plastic-block-forming machine - Google Patents

Description

July 16, 1927. v gm PLASTIC BLOCK FORIING MACHINE Filed OGLZO, 1925 2 Shook-Sheet 1 FIG. 1

Flei z awzajr. .smzu/ l Patented July 19, 1927.

U N I TED. S TTA TEiSZ emits O FI- CHARLES KL SMITH} 01E FORT ATKINSON}! IOWA.

' PLABTIC-BIJOUE-FORHINQ Imam: I

Application; flledz October 20, .1935; Serial: no. 68353:)

This: invention relates: to newand; useful:

improvements in plastic block iformin'ga'ma chines.

The primary object of the invention isto provide-a machine.- especially; adapted fore forming from plastic material, such as ce-:

ment or concrete, blocks suitable for use in -1 erecting building Wa1ls, or the-like,-

.A-. furtherfobject of the invention is to provide a novel form of core and corermovee mentvforthe-above referred totype of machine;

And a'still further object of the invention is to: provide a novel'typeof buildingublocki. Other objects and: advantages ofiflthe in a ventionwill be apparent during; the 1 course ofi the following: description;

In the accompanying drawings forming; a partiof this specification and. in which like numerals are employed to designate like;

- parts throughoutthe same;

tached from; its hinges and with the end: walls 1 swung into a open position Figure 4 is a" topplanvview ofthe mold-- ingvmachine,

Figure-5 is a fragmentary vertical; see tional=view of the machine,

Figureitl is a detail perspective View of the core shown in its lowered positiom.

Figure 7 is atop plan view of the-novel form of building block produced by this 1 machine,

Figure 8 is an end elevational view of the block, and a 'Figure 9 is a perspective view of the said block i In. the drawings, whereinfor thepurpose of illustration is shown a preferred: em. ,bodiment of this invention; the' numeral 5 designates'in its entirety; the stand'portion of the machine which I is suitably reinforced by transverse tend brace: membersfi and. has

Figure 2 is an end elevationa-l:viewofthe mounted side wall ofthe molding box (16-:

mounted: uponeits upper endithe bottom: or

base 7 of am0ldbox1 The rear wal1-8 of this mold box' iserigidly connected tovone longi: tudinaLedge-ot thebase 7 and has-hingedlyi connected thereto :the end walls 1 9 which are providedr with the :verticallyextending,

parallel core guides-i IO as best; illustrated o inlFigs.x3-and 4, The frontvwallllof the moldboxiis formed with laterally and downwardly: depending .apertured ears 12 which arerpivotedlon the: hinge 'pintle' 13. fastened at its ends-t0 the :plates 14. carried-by the up per portion ofrstheibase 5. This front wall 11 is roughenedon its inneri face 1 for forming; a block! with. anrornamental outer face. The inner faces of the remaining; walls 8 and 9h-are-smooth.--.: It is vto be understood, however; that-thednnen face=15 ofthe front wall llamayrbe smooth if desired and building; blockss formed by the same will then have allfvof their: faces-- of the smooth sur-' face type. Figure 4:;clearly shows the front wallflll ashaving-the edgeflangesilfi against which .theifree vertical edges ofethe end walls 9 bear for retaining the end walls against outward'wswinging, movement; on

theirahinges "17'. Figs: 1, 2 and 4b clearly showthelatehamembers 18 as being-pivotal;-

1y; conneeted itothe end edges. of the rear wall 8 andas zfundzioning: to. engage the .pins; l9v carriedrby thei end edgesgofi the hinged front wall 11:"f01i .locking this, wallin its closed position;

Figs. 3' 'toz5 incluSive shoW theloaseT of theamoldbox ashavinga: longitudinally exe tending; slot 20 formed therein iin vertical alinementwith; the grooves formed by the core. "guides 10': carried by; the mend walls 9. Dependingafrom the-.:base 7; and fastened to the endsaof the stand 5 are, metallic channel members 2l1which act as guides-ton the'aopposite endsof the core-22 when-the latter is arranged: in. its: loweredaposition exterior-1y of the mold=boxu Thiscore- 221ha-s its lower edge bolted ttoarectangular n-ame which has iprojeetionsiat itssloweri-edge; designated by the reference characters -24, sli'dably arranged in thew perpendicularly extending slots 25 formed in the -channel: members 21; These" ends 2441513 8 laterallypivotally connected: thereto the. core actuatinghandles 26.

These handles are employed for raising and lowering the core 22 in respect to the interior of the mold box. The various iigures clearly illustrate the core as being provided with transverse cuts 27 which extend from the top edge of the core 22 downwardly to points spaced inwardly from the bottom edge of the core.

To prepare the machine for forming ablock from plastic material, the end walls 9 are arranged in the position illustrated in Figs. 2 and l. The front wall 11 is then moved into the position illustrated in Figs. 1, l and 5 with the free edges of the end walls 10 engaging the end flanges 16 of the front wall 11. The latch members 18 are then arranged to engage the laterally projecting pins 19 for locking" the front wall 11 and end walls 9 in their closed positions. It is to be understood that the core 22 up until this time has been arranged in its lowered position, as clearly illustrated in Figs. 1, 2, 3, 4 and 6. The hand grips 26" of the handles 26 are then grasped by the operator of the machine and the core 22 is elevated into the position illustrated in Fig. 5 with the top edge of the core alincd with the top edges of the varous walls of the box. Figs. 2 and 6 clearly illustrate the operating handles 26- as having lateral notches 28 formed therein. After the core 22 has been moved into the mold box, the operating handles 26 are pivoted laterally on their pivot pins 29 for causing the notches 28 to engage the edges of the end boards 30,.

which are carried by the space 7. The engaging of these notches, with'the end boards 30 will hold the core 22 in its raised position. v

The plastic material employed for forming the type of blocks illustrated in Figs. 7 to 9 inclusive is then gradually placed in the assembled mold box and after enough of the material is arranged in thebott-om of the box and tamped to a level registering with the bottom ends 2' of the cuts 27 in the core 22, the lower tie rods 31 are placed in p the box and upon the lowerends 27 oft-he said cuts 27. Additional plastic material is then placed in the mold box and tamped down until the material reaches a suitable depth for positioning the upper tie rods 31 thereupon. These upper tie rods are then arranged in the cuts 27 and the remainder of the material is placed in the box and tamped down. To remove the molded blocks from the forming machine, the core operating handles 26 are pivoted to disengage their latch notches 28 from the boards 30 and then the core 22 is lowered into the channel members 21. This lowering or downward movement of the core 22 is considered as constituting amaterial improvement in the art as any pull upon the material produced by the movement of the core awayfrom the same will be prevented from tearing the material due to the fact that the latter is supported by the base 7 of the mold box against the pulling force of the core 22.

After the core has been lowered to its inoperative position, the latch members 18 may be disconnected from the pins 19 and the front wall 11 will then be free to be swung, as illustrated in dotted lines in Fig. 5, into a position away from the front face of the building block. The end Walls 9 may then be pivoted on their hinges 17 and the block removed.

Figures 7 to 9 inclusive clearly illustrate the novel form of building block produced by this machine. sections 32 which are of substantially e ual size and are retained in spaced paralle ism by the tie rods 31 which are embedded at their ends in the material forming the parts 32. As has been previously described, the front face 33 of the block may be formed with an ornamental surface or with a plain surface. 7

It is to be understood that the form of this invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described the invention, I claim 1. A machine of the class described com prising a stand, a mold box mounted thereon, a core vertically movable through the This block includes the bottom of said box adapted when'raised therein to divide said box into two independent compartments and provided with a plurality of transverse slots for receiving tie rods, lifting handles connected to the ends of the core and arranged outwardly of the ends of the mold box, means to releasably retain the core in raised position, and a carrier upon which the core is mounted having end extensions to which said handles are pivoted at their lower ends for lateral swinging movement, said core retainin means embodying members fixed to the ends of the stand and engageable by the handles when swung laterally after the core is raised.

2. A machine of the class described comprising a stand, a mold box mounted thereon, a core vertically movable through the bottom of said box adapted when raised therein to divide said box into two independent compartments and provided with a plurality of transverse slots for receiving tie rods, lifting handles connected to the ends of the core and arranged outwardly of the ends of the mold box, means to releasably retain the core in raised position, a carrier upon which the core is mounted having end extensions 1,aae,25s a lower ends for lateral swinging movement, guide the core when lowered, said guides said core retaining means embodying memhaving longitudinal elongated slots outbers fixed to the ends of the stand and enwardly through which the end carrier extengageable by the handles when swung latersions project and are vertically movable.

5 ally after the core is raised, and channel In testimony whereof I afiix my signature.

guides for the ends of the core fixed to the ends of the stand beneath the mold box to CHARLES K. SMITH.

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