US2005200A

US2005200A - Mold for brick-faced blocks

Info

Publication number: US2005200A
Application number: US661213A
Authority: US
Inventors: Thomas F O'gorman
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-03-17
Filing date: 1933-03-17
Publication date: 1935-06-18
Anticipated expiration: 1952-06-18

Description

' June'lS, 1935. T. F. oGoRMAN 2,005,200

MOLD FOR BRICK FACED BLOCKS Filed March 17, 1935 2 Sheets-Sheet l ATTORNEY June,18, 1935. T. F. oGoRMAN MOLD FOR BRICK FACED BLOCKS Filed March 17, 1935 2 Sheets-Sheet 2 INVENTOR THUN/As Ewa/WAN Patente-cl June 18, 1935 PATIENT oF'FlcE MOLD FOR BRICK-v-FACED BLOCKS Thomas F. OGorman, Nut'ley, N. J.

K ApplicationMaroh 17,

4 Claims.

This invention relates to improvements in molds for brick-faced blocks,` and particularly to a mold box havingan immovable rear wall, and a front l wall and two end walls attached toA a pivotally 5 mounted base-plate and designed to swing jointly from an upright to a horizontal position for lifting the molded block from the mold. e

Anr object of this invention'is to rprovide ar pivotally mounted mold box operated jointly by foot and hand power and comprising a foot lever designed for eiecting a portion of the ninety degree swing from the upright to the horizontal position so as to reduce. the force required for manually completing the remainder of the ninety degree swing. n 'i Another object of this invention is to so arrange the linkage connections between the core actuating lever and the cores for the block, that the handle of the core-actuating/lever may be conveniently positioned at a level above. the upper elevation of the mold for convenient 'grasp bythe hand, while the brim of the mold'may be easily reached for lling and tilting and removing the molded block from the mold box.

Another object of this invention is toprovide a removable base-board or pallet in connection with the mold, on which the block is formed and lifted from the moldr and on which it remains until it is set, the said pallet board being approximately the same length as the block, the front walladjacent the pallet having openings therein 'soas-to' provide hand holds on the pallet whilethe molded block is in the mold.

Another object of this invention is to provide a mold for a `brick-faced.building block having a tapering upper face and afnon-taperinglower face and alignment projections for leveling the superposed blocks; the said blocks also'having tapering end walls. y y l Other objects and advantages of my invention will appear from the more detailed description and the drawings in which like reference characters denote like parts.

Figure 1'is a vertical sectional view of the mold,v

1933, serial No. 661,2134 (c1. 25-41) inFigureZ and shows the grille-frame in adjusted relation for molding brick-faced blocks.

Figure 6 is a vertical sectional view of a wall embodying my brick-faced building blocks.y

Figure 7 is a plan view of a corner of ja wall embodying my building blocks and shows wedge-V shaped layers of mortar between the vertical Vfaces 0f yadjoining blocks. y

Figure 8 is a planview the wall. vo Figure 9 is a sectional view taken as on line 9-9in Figure V2. l

of a straight portion of 10 In the illustrated embodiment of the invention,

the'several views show arnold I0, consisting of a mold box II, and a supporting frame'fn. The mold box II, comprises a movable front wall I3,` an immovable rear wall' Iv4,`,t`wo.pivoted end walls l5, I5, and a base-plate I6. o Each end wall I5, 4is,

pivotally connectedat' its loweredge tothe base- `the end lfaces of thefront and rear walls when in operative position as shown in Figures 1 and'2. The locking levers IB, are mounted `'on pivots I9, I extending from the outer faces of the end walls I5, and are designed to simultaneously engage ears 2G, projecting from the front and rear walls. The front wall I3, is provided with integral angular extensions 2|, having slots 22, the wall being fastened to arms 23, extending fromthe` baseplate I6, by means ofrbolts 24, passing through the y slots-22. The yfront wall I3, may thus bemoved inwardly for adjustment relative to the immov" able rearvwallv I4'. forthe `purpose of molding blocks of different widths., The iront wall I3, has been formed with a recess 25, adapted to receive two battens 26, 2e, fastened to a pallet board 27. The pallet board serves as a base upon which `a molded block may be lifted from the mold box I I, and allowed to remain thereonruntil the block is dried orfset. The pallet board'is of the same length as a molded block, two openings 28, having been provided in the end portions of the front wall I3,` so as toaiiordfconvenient hand holds on the pallet board while in the mold box II; The base-plate I 6is pivotally mounted on the framek I2, by means of pivots 29. .f

'Ihe rear wall I4 is provided with a plurality of; apertures 3i), adapted'to receive and rguidefcores 3l. Each one of the cores v3l isy provided with'an extension` 32`,\having anaperture 33in engagement witha shaft34. Mountedl at each end, of4 the shaft 34 Ais a roller35, housedin anelongated aperture or bearing 36, in each of two spaced

upright extensions

31, 38, of the supporting frame I2. The

extensions

31 and 36 are respectively provided with a bearing 68, having an outwardly extending shaft 38 rotatably mounted therein, each shaft 39 having a lever 40 fastened thereto. The free end of the respective levers 40 is provided with a pivot pin 4|, in engagement with one end of a link 42. The other end of the link 42 is in engagement with the shaft 34. An operating lever 43 for actuating the cores 3|, is fastened to the shaft 39 in the extension 31, with its handle elevated above the upper level of the mold box |I By swinging the lever 43 to a substantially hori zontal position, the linkage members 4B and 42 cause the cores 3| to move into the mold box II, and come into abutment with the pallet 21.

A foot lever 44 has been pivotally Ymounted on the supporting frame I2 on a pivot 45. A roller 46 has been mounted at the upper end of the foot lever, rthe said roller contacting with the underside of the baseplate le, at a point adjacent its free end 41. It .is thus` possible, by pressing against the foot lever 44 to lift and tilt the base- `plate I6, to an acute angle about the pivots 29,

as best shown in Figure 3, when the baseplate and attached front wall and end walls may by grasping handles 63 on the locking levers I8, be easily hand-.swung forwardly from an upright to a horizontal position, in which the forward yend face of the base-plate I6 rests on brackets 43,

extending sidewise from the supporting frame I2.

The base-plate I6 has been provided with a plurality of parallel slots 49, positioned in parallel relation with the front and rear walls, and with a plurality of staggered slots 50, positioned in right-angular relation with the slots 49. grille-,frame 5I, lof approximately the same d1- mensions as the slots' 49, and 50, is designed to fit into the slotsand to be moved in and out therein and may be adjusted above the base-plate working surface by means of a lever 52, pivoted at 53, and connected to the grille-frame 5I, by means of pins 54. The pins 54 may be fixed to theV lever and Yin engagement with slots 55 in the grille 5| The free end of the lever 52 may be secured in adjusted relation with the base-plate I6, by means of abolt 56, housed in an aperture 51, in an extension 63 of one of the arms 23,.ex tending from the base-plate I6, and the height or upper level to which the grille-bars 6| of the grille-frame 5I, may be raised into the mold box I|,`may4 be regulated by means of a graduated scale,58, or .by means of a xed stop 59, shown in Figure l. A rectangular bar 6U, extending the m11 'length of the mold box and of One-naif the thickness of one of the grille-bars 6l, of the grille-frame 5I, has been screwed to the rear wall I4, at its lower edge, as best shown 1n Figure 5. The bar has been provided with lateral slots 62 at each end so that it may be raised to the adjustedlevel of the grille-bars or lowered below the level of the working surface of the base-plate I6. A bolt 63 serves for the vertical adjustment of the bar 60,.

As shown in Figure 3, each end wall I5 has been provided with an inwardly facing core 3I1, built upof three sections vof the same contour as the cores 3|, and of a size equal to one-half the thickness. of a core 3|. The cores 3I1, being detachably secured to the end walls I5, so that by removing the end section and by adjusting the position of the front wall in relation to the rear Wall U, it iS possible to, mold blocksr of different f in the same mold box I I.

As best shown in Figure 2, a grille-frame 64 may be provided in the end wall I5, and a handwheel 65, and a threaded screw 66, serve for moving the grille-frame G4 into and out of the mold box II. It is to be noted that when the right hand end wall is provided with a grille-frame 64 facing the interior of the mold box in place of the core Sil that the mold will then be adapted to produce right hand corner blocks; similarly by providing a grille-frame in the left hand end wall facing the interior of the mold box in place of the core Sil, that the mold will then be adapted to produce left hand corner blocks. Pier blocks may thus be molded having brick faces on three sides. It is also to be noted that when the grilleframei, and the bar 66, are positioned ush with the working surface of the base-plate I 6, that the mold is then adapted to produce molded blocks having a plain nish outer face without any grooves. rlhe mold is also adapted to produce blocks without cores and blocks oi varied heights; the rear wall I4, being removable and designed to be fastened to the upright extensions 31, 3G, of the supporting frame 2, by bolts 61, shown in Figure l. y

As best shown in Figure 2, thelever 52, has been provided with a bifurcated rear

portion having arms

12, 12, spaced apart substantially the full length of the grille-frame 5I. As best shown in Figure l, the arms 12, are each provided with a pin 54, which engages with respective slots 55, in downward extensions from the mid-portion of the grille-frame 5|. The grille-frame is thus supported at spaced points in balanced relation, so that irrespective oi the level of the grille bars 6I, in the

slots

49, 50, of the base-plate I 6, the working surfaces of the grille bars remain in constant parallel relation with the working surface of the base-plate I6. It is to be noted that the horizontal face-bar 14, of the grille-frame 5I, is of one-half the width of an intermediate bar 6I, the same width as the bar 66. The face-bar 14, serves to form a groove in the front face of the molded block at its lower edge, the depth of the said face groove being the same as the depth of the intermediate grooves but of one-.half the widthof an intermediate groove and the same width as the upper face groove formed by the bar 6U.

As shown in Figure l, the rear wall I4, of the mold II)slopes outwardly to form a block having a tapering upper face. As shown in Figure 3, the rear wall I4, has been provided with a plurality of spacedl recesses 13, adjacent itsupper edge. The recesses 13, serve to mold substantially rectangular projections extending upwardly from the tapering upper face of the molded block.

As shown in Figures 6, 1 and 8, I have provided in conjunction with my mold I il, an iinproved form of building block 15, having a tapering upper face 16, tapering from the front face and tapering end faces 11. ,At the upper and tapering face of the block I have provided a pluv rality of alignment projections 18, which face upwardly and terminate at the same level as the highest point in the tapering upper face. The projections 13, serve as means for aligning the superposed block on the tapering upper face of the lower block when laid up in a wall, as best shownl in Figure 6. When the blocks 15, are

laid up in superposed relation, the front hori- Zontal edges of the blocks abut andthe rear edges are spaced apart and form tapering wedge-like layers of mortar 1.9 between the horizontal face of the blocks. The tapering end faces 11, best shown In` molding blocks havinggrooves simulating brick-work, I have foundit,necessarytoprovicle an odd number of parallel horizontalgrooves 83, intermediate the Vupper and lower faces ofthe block and to provide a narrowgroove 84, ofonor half the width of one of the. intermediate grooves 83attheupper, face of the block and a narrow groove 85, of one-half the width of one of the intermediate grooves r82', at the lower face of the block. Furthermore, in order to make it possible to build up asymmetrical wall 8 I', with identically molded brick-faced blocks 'I5 of one design, I have found it necessary to arrange the highest and lowestv vertical grooves 86, 8l', in'` staggered relation with each other, as shown in Figure 6, and it is to be noted that the bars E I, of the grilleframe 5I, and the bar 60, on the rear wall I4, of

the mold I0, have beendesignedfor this purpose as previously mentioned.

From the foregoing it` willbe seen, that when l a plurality of blocks 'I5 of identical brick-face -design are laid up in a wall'as indicated, that the outer face of the wall will have the appearance of brick-work, and that the uppermost groove of any block in the wall will together with the lowermost groove of the superposed block form a composite groove of the same width as any of the grooves located intermediate the upper and lower faces of the block and that the wall will have a symmetrical brick-face appearance.

As shown in Figure 9,`the end' wallv I5'of the mold I8 tapers into the mold box II and serves to forma tapering end wall in the molded block.'

' Both end walls I5, I5, may thus be tapered to form blocks having two tapering end walls.

The operation is as follows:

With the mold mox I I, in the upright molding position shown in Figure 1, the operator swings the lever 43 to a horizontal position and causes the cores 3| to move` into the mold box in abutment` with the pallet 21. The rectangular bar 6D is adjusted to the level of the bars 6I of the grille-frame 5I. In this adjusted position, the bar 68 forms a groove 'I0 in the front face of the molded block, the depth ofthe groove I0 being the same as the depth of the grooves 69 formed by the grille-bars 6I, but of one-half the width of a groove 69. The top of the mold box II, is

open and freshly mixed concrete is shoveled therein and tamped until the mold box is lledv even with its brim, thus molding a hollow block vfor building walls having the appearance of brick-work. y i

To remove the molded block from the mold,`

the operator presses against the foot lever 44, and tilts the base-plate I6 and the attached front wall I3 and end walls I5 to a position best shown in Figure 3, when the operator takes hold of the handles 63, on the locking levers I8, and disengages the levers I8,` and swings the levers I8 to stops 'II on the end walls I5, and then swings the mold box Il, and the molded block forwardly, jointly by foot and by hand power untilfitvgassumes. a -position vin ri'ght-angularr-relation ,with the-j normal upright ,positionfofthe' ymold, ;in'which V,position the-forward `end face of thefbase-platearests `on the bracketsgl the frontwall I3l being :then in a horizontal position and themolded blockresting on thepallet 2l.

The operator then. grasps both ends `oi the pallet boardy 2l, throughs-the openingsrgf; inthe `front wallv I3- and lifts the'r vpallet and the molded block` fromfthemoldrbo'x and places `bothin a position untilA the molded block is dried or set.l

f `Having thus described my invention, -I, claim: I ,1.1. Inamold for plastic material, a moldxbox with endswalls pivotallysupportedat their loweredge from 'a;.base-plate, afront wall secured .to 1 said base-plate,".aA supporting frame'` beneath vsaidxnoldr box,;';a sloping rear'lwall integral with said supporting. framemeans for supporting said front wall from said base-plate in a plurality of adjusted positions relative Ato said rear wall,V

said base-plate and attached front and end walls being pivotally supportedv and adapted to swing jointly through an angle of ninety degrees upon said frame, a core-actuating'lever fulcrumed in I the frame and ,located on` one sidey of the mold with its handle elevated above the upper level.

of the mold for moving a plurality of cores into and out of said kmold box, a foot lever pivotally mounted on said frame and extending upwardvly in contact with the rear portion of the lower face of said base plate ,for `lifting and tilting said base-plate and attached'front and end walls Aa portion of said swing to an inclined position on said frame to permit said mold box to be easily hand-swung the 4remainder of said ninety degree swing, -a removable pallet, the front wall of,` said mold box being provided with end openings forming handholds for removing said pallet and molded block from said mold.

2.' In a mold for molding blocks the combination with a base-plate pivotally mounted on a supporting frame, an immovable rear wall integral with said supporting frame, a front Wall and two end walls supportedk by said` base-plate and adapted to swing jointly on said pivot ninety. rdegrees and away fromsaid immovable `rear wall, a core-actuating llever fulcrumed in the frame, and linked with a plurality of cores for` moving said cores into` and out of said mold, a foot lever pivotally mounted on said supporting frame for` lifting and tilting said base-plate and vattached front and end walls a portion of said swing to anA inclined position on said frame to permit said mold box to be easily hand-swung the remainder of said ninety degree swing with the molded block resting on a pallet in said moldV box, the front kwall of said mold being provided withl end openings forming hand holds for removing said pallet and molded block from said mold. l v b.

3. In a mold for molding Abrick-faced blocks the combination with a base-plate pivotally mounted on a supporting frame, an immovable rear plate adjoining said base-plate and fastened to said supporting frame, -a front plate en c and two end plates Vsupported by said baseplate and adapted to swing jointly on saidV baseplate pivot ninety degrees and away irom said rear wall, means forr supporting said front wall from said base-plate in a plurality of adjusted positions relative to saidrear wall', one or more of said mold plates being provided with grilleframes having bars to form grooves simulating a brick' wall in one or more faces of the molded` block, the rear plate having a rectangular bar of one-half` the thickness -of one oi the grille-bars fastened thereto at the upper level of the-grillebars, a pallet in said mold, and yi.oot perated means `for lifting and swinging said base-plate and front plate and end plates jointly through an acute angle to permit said mold box to be easily hand-swung to a. totalv of substantially ninety degrees with the molded'block resting on one of its non-grooved sides on said pallet.

4. In a mold for molding blocks the combination with a base-plate pivotally mounted on a supporting frame, an immovable rear wall integral with said supporting frame, a front wall and two end walls supported by said base-plate and adapted to swing jointly on saidpivot ninety degrees and away from said immovable rear wall, a core-actuating lever fuicrumed in the frame and linked with a plurality of cores for movaooazoo ing said cores' into and out of said mold, a foot lever pivotally mounted on said supporting frame for lifting and tilting said base-plate and attached front and end walls a portion of said swing to an inclined position on said frame to permit said mold box to be easily hand-swung the remainder of said ninety degree swing with the molded block resting on a pallet in said mold box, the front wall of said mold being provided with end openings forming hand holds for removing said pallet and molded block from said mold, said rear Wall having recess means adjacent its upper edge and facing said front wall, said recess means serving to form alignment projections for leveling the molded blocks when assembled in superposed relation.

THOMAS F. OGORMAN