US2836875A - Core forms - Google Patents

Description

w. M. CHANDLER ETAL 2,836,875

Jur-1e 3, 1958 l CORE FORMS 4 Sheets-Sheet 1 Filed 0017. 14. 1955 (Handler m Wm,

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June 3, 1958 w. M. CHANDLER ErAL 2,836,875

CORE FORMS 4 Sheets-Sheet 2 Filed 0G17. 14. 1955 .Kw @Nw h mmf June 3, 1958 w. M. CHANDLER ETAL 2,336,875

CORE FORMS Filedvoct. 14. 1955 4 sheets-sheet :s

June 3, 1958 w. M. CHANDLER ETAL 2,836,875

com FORMS Filed ooi. 14. 195s 4 sheets-sheet 4 7% FIEEI All United States Patent por! 2,s36,s7s

corta roRMs Wesley Miles Chandler and Paul Fred Heuser, St. Paul, Minn., assignors to Wilbert W. Haase Co., Forest Park, lll., a corporation of Illinois Application ctober 14, 1955, Serial No. 540,382

6 Claims. (Cl. 25 128) This invention relates to cores and, more specifically, to cores of the type particularly well adapted for use in molding forms for Vburial vaults, septic tanks, hollow blocks and the like.

The present invention constitutes improvements in cores of the general type disclosed in the application for Letters Patent Serial No. 434,252, now Patent No. 2,805,462, filed in the United States Patent Office on I une 3, 1954, by Wesley M. Chandler, Paul F. Heuser and Kenneth C. Smith.

It wl be understood that reference hereinafter to burial vaults, andthe like, is merely by wayl of illustration and not by way of limitation and that forms embodying the principles of our invention may be constructed and used for forming other articles without departing yfrom the purview of our invention.

.lt is an object of our invention to alford a core, of the aforementioned general type, embodying corner sections which may be moved relative to each other in a novel and expeditious manner.

A further object of our invention to insure substantially simultaneous, equal movement, of diagonally oppositely disposed corner sections during the collapsing and expansion of a core of the aforementioned type.

Another object is to enable oppositely disposed corner sections of a core of the aforementioned type to be positively moved in a novel manner.

Yet another object is to provide a novel core of the aforementioned type which is relatively simple and easy to operate.

A further object of our invention is to protect against the canting or binding of corner sections of a core of the aforementioned type during the collapsing and expansion thereof.

Other and further objects of the present invention will be apparent from the following description and claims and are illustrated in the accompanying drawings which, by way of illustration, show a preferred embodiment of the present invention and the principles thereof and what we now consider to be the best mode in which we have contemplated applying these principles. Other embodiments of the invention embodying the same or equivalent principles may be used and structural changes may be made as desired by those skilled in the art without departing from the present invention and the purview of the appended claims.

in the drawings:

Fig. 1 is aside elevational view of a core embodying the principles of our invention, and showing the core mounted in operative position in a form for molding burial vaults;

Fig. 2 isa longitudinal sectional view taken substantially along the line 2 2 in Fig. 1;

j "Eig, 3 i-s an end elevational view of the core shown in Pig.A 3 looking. inthe direction of the arrows 3 3V i'n Fig. l;

ice

Fig. 4 is a sectional view taken substantially along the line 4 4 in Fig. 1;

Fig. 5 is a view similar to Fig. 4 but showing parts disposed in different operative position;

Fig. 6 is a detail sectional view taken substantially along the line 6 6 in Fig. 5;

Fig. 7 is a detail sectional View taken substantially along the line 7 7 in Fig. 5; and

Fig. 8 is a detail elevational view of a portion of the mechanism shown in Fig. 2, looking in the direction of the arrows 8 8 in Fig. 2.

To illustrate the preferred embodiment of our invention, a core C, embodying the principles of our invention, is shown in the drawings mounted on the base B, within the outer housing or shell H, of a form F for making a burial vault boX V.

Like the core in the aforementioned application for Letters Patent, Serial No. 434,252, the core C is substantially rectangular in shape and embodies two end walls 21 and 22, and two side walls 23 and 24, which are split along lines 26, 27, 2S and 29, respectively, Figs. 1, 2 and 3, to thus divide the core into four corner sections 31, 32, 33 and 34. A top Wall 36 is loosely mounted on lianges 3S which project inwardly from the upper end portions of the walls 21-24, Figs. l and 4.

The lines 26-29 extend from the top to the bottom of the walls 2li-24, respectively,A and are disposed at acute angles to the horizontal with the lines 26 and 29 preferably disposed equal distances from, and at the same downwardly diverging angle to the junction of the end wall 21 and the side wall 24, and the lines 27 and 2S preferably disposed equal distances from, and at the same downwardly diverging angle to the junction of the end wall 22 and the side wall 23.

Four elongated track members 4l, 42, 43 and 44 made of suitable material such as, yfor example, strap steel are mounted on the inner faces of the walls 21 24, respectively, in parallel overlying relation to the lines 26 29 respectively. Each of the tracks 41-44 is attached at its upper and lower ends to elongated spacing straps 46u and 465, respectively, Figs. 2 and 4. The spacing straps 46a and 46h are attached to the upper and lower edge portions of the proper side walls 21 24 to thereby support the intermediate portion of each track 41-44 in spaced relation to the adjacent portions of the side walls 21 24. The tracks l1-44 are attached in this manner to the corner sections 31 and 33 with the track 41 being attached to the end wall 21 between the line 26 and the side wall 24; the track 42 being attached to the end wall 22 between the line 27 land the side wall 23; the track 43 being attached to the side Wall 23 between the line 28 and the end wall 22; and the track 44 being attached to the side wall 24 between the line 29 and the end wall 21.`

Four elongated slides or carriages 5l, S2, 53 and S4 are slidably mounted on the tracks 41 44, respectively, Figs. 2 and 4. Each of the slides 51-54 has a substantially rectangular shaped opening extending longitudinally therethrough, Fig. 6, and the respective track 41 44 is disposed therein in snugly fitting but freely slidable relation thereto.

Pour elongated mounting strips 41a, 42a, 43a and 44a are disposed adjacent to the slides 51-54, respectively, and are secured thereto by suitable means such as, for example, welding, Figs. 2 and 4. The mounting strips 4in-44a a-re secured to the walls 21 24 respectively, adjacent to the lines 26 29, respectively, but preferably spaced from the latter sufficiently that the slides 51 S4 and the tracks Liii-44 may be disposed in such position l Y corner sections 32 and 34,

' Yof the respective walls 21-24 to which Ythey are attached, Yand Vthe' slides 5ft-54am attached to the longitudinal center portions of the mounting strips41a-44a in spacedV 1 relation to the outer endsof the latter.

A lifting mechanism M is mounted in the core C for effecting upward and downward movement of thetcorner sections 3Y2'and `34 relative to the corner sections 31 and 33. The lifting mechtanism M includes two substantially T- shaped levers 56a and 56b mounted in the corner sections 31 and 32, respectively, Figs. 2 and 4. The levers 56a and Sb are identical in construction and each ernbodies a substantially H-shaped head 57 having two substantially parallel sides 58 and 59 interconnected by a centrally located cross member 61. The elongated shank Vor body member 63 `of the respective levers 56a and 5,6b

projects generally downwardly from the respective cross member 61.

The head 57 of the lever 56a is pivotally connected at one end of the corner'section 31 by bolts 65 extending through Vthe side members VS and` 59Y into a bracket 67,

mounted on the inner face of the upper end portion'of the corner section 31 by suitable means such `'as y welding. Y

TheV other end portions of the side members 59 and 58 and the head 57 of the leverV 56a arerconnected by a ball and socket joint 71 and 72, respectively, to the upper end portion of respective rods 74 and 75. The lower end portions of the rods 74 and 75 are connected by ball and socket joints 77 and V78 to brackets 81 and 84 which are attached to and project'inwardly'from the slides 51V and 54, respectively, Figs. Zand 4. 1 Y

The other lever 5611 is similarly attached by bolts 65a to a bracket 67a mounted in the corner section 33, and

Y is similarly attached -by rods 74a and 75a, and ball and socket joints 71a, 72, 77a and 78a, to brackets 82 and 83 attached to, and projecting inwardly from, the slides 52 and 53 respectively, Fig. 2. Y

An elongated lever 91, Figs. 2 and 8, is mounted on and attached to a rod 93 which extends vertically through the central portion thereof. The rod 93 yis mounted between and journalled in two horizontally disposed brace members95 and 96, Figs. 2 and 8, which extend between, and are mounted on, the upper face of two elongated Y bracernembers 95a and 95h, and 96./z'and 96b,`respec tively, Vattached to, and extending'longitudinally of, theV Vinner faces of the side walls 23 Vand 24. The brace members 95 and 96 are attached at one end to the brace members 95a and 96 a, respectively, by suitable means such as welding. The other ends of the brace members 95 and 96. terminate in spaced relation'to'the side Wall 24, and are attached to the brace members 95b and 9611 by bolts 97a mounted in slots 97b with a sliding tit so that the Ywalls 23 and 24 are free to move inwardly and outwardly relative to each other. The brace members 95 andV 96 are disposed perpendicular to the side walls 23 and2r4, kintermediate the ends thereof, and are disposed fin'parallel vertical spaced relation to each other .to

thereby support the rodj 93 in ksubstantially vertically extendingposition. 'Y Y A Y t ,The lower end portion of the shank 63 of the lever 56a is connected Vby a ball and socket joint 98, Figs, 2 and 4, to one end portion of a link 99. The other end portion of the link 99 is pivotallyconnected by suitable means Vsuch as apn 101 to onerend portion of the lever;91.

Similarly,;the -lower end portion of the shank V63'of the leverfr5^6b is `connected by a ballrand socket joint'98a,

Fig.A 2, to one end portion of a link 99a, andthe other end portion of the link'99a is connected b'y'aV pin V10111 to the end portion of therle'ver 91 opposite that to which the link 99 is connected.

A iluid motor 103,'operable by suitable working iluid such as, for example, compressed air, is mounted on the side wall 23 by a bracketV 105. The motor 103 embodies an elongated cylinder 107 disposed in horizontally extending position in parallel relation Yto the side wall 23.

An elongatedpiston 109 is reciprocably mounted in the.V cylinder 107, and has an outer end portion 109a projectbroken lines in Fig. `2, it is` effective to rotate the lever 91 from the position inl which it is shown inbreken lines in Fig. 2 Iwithout binding occurring in the connection` ofiV the piston'109 and the `lever 91.

Y Movement of 5 the pistonY 109 outwardly fromrthe i.

cylinder l107 of the fluid'motor103 may be effected by feeding'V compressed air from a suitableYK source, not shown,

through a line 114 into the 'tail end 107e ofthe cylinder 107., Movement of the pistonv 109 from Y.the fully extended position Vshown in broken Vlines in Fig. 2'to the fully VYretracted position shown in solid lines therein,

. may be eiected by similarly feeding compressed vair Vthrough a linens interne headene 1o1b of me cylinder WhenAthe walls 21-'24 of theV core C are Vdisposed in normal position as shown in Vsolid lines in Figs. V1,V 3 and 4, the heads 57 of the levers 56a and 56 b Yare disposed in downwardly land inwardly slopingz relation to the brackets 67 and 67a, and the Shanks y63 project downwardly and outwardly from'the heads 57 as' shown in Fig. 4. j

When thegpiston- 109 of-themotor 103 is disposed in fully retracted position as shown in solid lines in`r t Fig. 2, the leverr'91, and the links'99 and 99a, are disposed in the positions shown in solid lines in Fig. 2,

and in which position they permit the shank 63 of the T-l u shaped levers. 56a'and 56b` to'be disposed in the aforementioned normal position wherein theyVV project downwardly and outwardly fromV the heads 57'ot the levers V56a and56b. .t y Upon actuation of the motor 103 to lthereby extend the'piston 109 from the retracted position shown in solid lines in Fig; 2te the fully extended Yposition shown in broken lines therein, the leverV 91 Vis pivoted thereby around the rodV 93 from the position shown in solid lines in Fig. 2 to the position shown in brokenlines therein. This movement of the lever 91 is effective to'move ,theV links 99 and 99a from the positionY shown in solid lines in Fig. ,2' to the Vposition kshown'inbrokeri linesV therein andthereby pull the lower end portions of theshanks 63 of thelevers 56o andY 561 inwardly .toward the center 'of the core fromv the positions' shown inFig. 4, tothe i position shown-in Fig. 5 and Vin. broken lines in Fig. 2.

Such movementof the Shanks V6? causes the heads 57 of the levers 56a `and 5617 to-rotate upwardly around the pins 65 Yand thereby c ausesthe rods 74, 75, 74a and `75a to pull the slides 51, 54, 52 and 53 upwardly along the'tra'cks 41, 44, 42 and 43, respectively, to thereby raise the corner' sections 32 and 34 relative to the corner sections 31 and 33 Yfrom the'` position shownin solid lines in Figs. 1, 3 and 4Y intorthe position shown in Fig. 5 andi-in broken ,lines in Figs. land 3.

When it is desired to again lower the corner sections 32 and 34 relative to the corner sections 31 and 33, Ycompressed air may be fed in to the line 116 to thereby Vmove the piston 109 from the fully extended position to the fully retracted position shown in Fig. 2 `and `thereby move the lever 91 and the links V99 and 99a from rthe position shown in broken lines in Fig. 2 to the position shown in solid lines therein. rIhis movement of the lever 91 and the links 99 and 99a is eective to return the levers 56a and 56b to normal position shown in solid lines in Fig. 2 and thereby move the slides 51, 54, 52 and 53 downwardly relative to the tracks 41, 44, 42 and 43, respectively, and thus move the corner sections 32 and 34 down relative to the corner sections 31 and 33, back into normal position relative to the latter.

It will be understood by those skilled in the art that when we state that the corner sections 32 and 34 are moved upwardly or downwardly relative to the corner sections 32 and 33, this is merely relative movement, and under conditions wherein the corner sections 32 and 34 are prevented from moving upwardly or downwardly, the corner sections 31 and 33 are actually moved downwardly or upwardly, and under conditions wherein all of the corner sections 31-34 are free to move, the corner sections 32 and 34 will actually move upwardly or downwardly and the corner sections 31 and 33 will actually move downwardly or upwardly, simultaneously.

ln this novel core, it will be seen that the upward relative movement of the corner sections 32 and 34 relative to the corner sections 31 and 33 is effected in a practical manner to insure equal movement of the diagonally opposite corner sections to thereby protect against binding thereof. f Y

From the foregoing, it will be seen that in a typical operation of a form embodying my novel core, the core C may be mounted on a suitable base such as the base B in normal operative position such as shown in Fig. l wherein the core C is disposed outwardly of guide members 121, Figs. 3 and 4, with the top plate 36 disposed on the ange 38. A suitable outer shell or housing, such as the housing H, may then be mounted inoperative position outwardly of the core C and in position to dene, with the core C, an area into which material for forming a receptacle such as the box V of a burial vault may be poured. After the vault-forming material has been poured into the space between the housing H and the core C, the outer shell H, the vault V and the core C, may be raised upwardly from the base B. Such raising of the shell H, vault V, and core C, may be accomplished by suitable means such as, for example, a hoist, not shown, suitably engaged with the shell H, such as for example, by being connected to trunnions 123 and 124 projecting outwardly from the opposite end walls of the housing H.

After the shell H, the box V and the core C have been raised to this position, compressed air may be fed through the line 114 into the cylinder 107 to thereby effect outward movement of the plunger 109. This movement of the piston 109 is effective to pivot the heads 57 of the levers 56a and 56h upwardly and thereby move the corner sections 32 and 34 of the core C upwardly relative to the corner sections 31 and 33, or, in other words, to move the corner sections 31 and 33 downwardly relative to the corner sections 32 and 34, as previously discussed. During this movement of the corner sections 31 and 33, relative to the corner sections 32 and 34, the movement of the tracks 41-44 relative to the slides 51--54 is eiectiVe to cam the slides 51 and 54 inwardly toward each other, and the slides 52 and 53 inwardly toward each other, to thereby maintain the corner sections 31-34 in abutting relation to each other. Hence, the corner sections 31-34 are moved in a positive manner horizontally toward each other so that the core C is caused to shrink both laterally Vand longitudinally in a horizontal direction and the walls 21-24 are pulled inwardly out of engagement with the respective adjacent walls of the box V. This shrinkage of the core C is effective to move the lower edge portions of the corner sections 31 and 33 into engagement with the upper end portions of the guide members 121 disposed adjacent thereto to thereby support the core C in raised position.

Thereafter, the box V may be lifted from the core C by lifting at the trunnions 123 and 124 on the outer shell H. During this lifting of the box V from the core C the top plate 36 may be pulled from engagement with the box V 'oy suitable means such as chains 126 connected to the plate 36 andthe base B, Pigs. 2 and 5, and thereby permit the top plate 36 to fall downwardly on to the ange 3S.

The outer shell H and the box V may then be raised completely off from the core C, and the box V removed from the outer shell H by disassembling the walls of the shell H. The core C may then be quickly and easily returned to its normal vault forming position by applying air pressure through the line 116 to the cylinder 107 to thereby cause the piston 109 to move back into fully retracted position and thus pivot the levers 56a and 5611 back into normal position. As the levers 56a and 5617 move back into normal position, the corner sections 32 and 34 of the core C move downwardly relative to the corner sections 31 and 33 to thereby cause the walls 21-24 to expand outwardly relative to each other, to thus enable the core C to slide back down the guide members 121 on which it rests into the normal position shown in Fig. l. The outer shell H may then again be assembled on the base B around the core C and the form 20 is again operable to receive vault forming material for the purpose of forming another vault.

From the foregoing it will be seen that we have afforded a novel core for burial vault forms and the like wherein the parts thereof are constituted and arranged, and are operable in a novel and expeditious manner.

Thus, while we have illustrated and described the preferred embodiment of our invention, it is to be understood that this is capable of variation and modification, and we therefore do not wish to be limited to the precise details set forth, but desire to avail ourselves to such changes and alterations as fall within the purview of the following claims.

We claim:

1. A core for use in forms for molding burial vaults, and the like, comprising two pairs of oppositely disposed corner sections disposed in abutting relationship with respect to each other, said pairs of corner sections being movable vertically and horizontally relative to each other, means pivotally mounted in said corner sections of one of said pairs for swinging movement thereon through similar predetermined arcs, said means in each of said corner sections in said one pair being connected to each of said corner sections in the other of said pairs and being operable upon oscillation of said means through said arc to move said corner sections in said other pair vertically and horizontally relative to said corner sections in said one pair to expand and contract the core, and a driving member connected to said iirst mentioned means and operable to simultaneously swing said means in both said corner sections of said one pair through said arcs.

2. A core for use in forms for molding burial vaults, and the like, comprising two pairs of oppositely disposed corner sections slidably mounted in mutually abutting relationship relative to each other for sliding movement vertically and horizontally relative to each other, two levers, each of said levers being rotatably mounted in a respective one of said corner sections in one of said pairs for rotation through a predetermined path of travel, means connecing said levers to said corner sections in the other of said pairs in position to slide said last mentioned corner sections vertically and horizontally relative to said corner sections in said one pair to expand and contract the core upon oscillation of said levers through said path of travel, and means for simultaneously oscillating said levers through said path of travel, said last named means comprising a lever pivotably mounted between said corner sections and connected to said iirst mentioned levers, and means connected to said second mentioned lever for oscillating the latter.

. 7 3. Acorefor use in forms for burial vaults','and the like, comprising two pairsrof oppositely disposed corners, each of said-corners in Vone of said pairs being'disposed `in`abu`ttingrel`ation to each of said cornerl sections in the other of said pairs along a downwardly and outwardly sloping line, two elongated levers, Yearch of said levers being pivotally mounted at one `end on one of said corner sections in saidv one pair, eachV of said levers having another end portion movable through a predetermined arc around said one end portion thereof,Y elongated rods connected at one end to said levers and at ythe other end 'to l said corner sections in said other pair inI position toV movesaid cornersections in said other pair`verticallyrand corner sectionsforpredetermined horizontal pivotal movehorizontally Aalong said lines Vrelative to said cornerrsecn tions in said one pair to expand and'contract the core upon oscillation' ofv said levers through said arcs, and means for simultaneously oscillating said levers through said arcs, said means comprising driving means including an elongated lever rotatably mounted between said corner sections and having two end portions connected to said rst mentioned levers in position to oscillate the latter.

4. A core for a molding form comprising two pairsof corners, each of said pairs of corners being slidably mounted in Vmutually abutting relationship relative to the Y other of said pairs for sliding movement vertically and Y horizontally relative thereto, levers pivotally mounted in said corners in oneV of said pairs and connected to said corners in the Vother of said pairs in position to slide said pairs of `corners vertically and horizontally relative to each other to expandtand contract the core upon predetermined movement of said levers, Yand means for moving said levers through said predetermined movement, said means comprising an elongated lever centrally pivoted between said corners, Ymeans connecting the end portions of said elongated lever to said lirs't mentioned levers in such position as to be eliective to move said tirst mentioned levers through said predetermined movement upon oscillation of said elongated lever, `and drive means connected to one end portion of said elongated lever for oscillating the latter'.

5. In a core having opstanding walls divided from top to bottom along four separation lines disposed at an acute angle to the horizontal into four corner sections, two of said sections being spaced from each other by the Yother two of said corner sections, said otherrtwo corner sections being spaced from each other by said first mentioned two cornerV sections, four elongated tracks attached to said first mentioned corner sections, each of said track being disposed adjacent to, and in substantially parallel relation to, a respective one of said lines, and four slides attached toV said other corner sections, each of said slides being slidably mounted on a respective one of said tracks for reciprocatory movement therealong: two levers, each of said levers having two legs, one of said legs of each of said levers being connected to a respective one of said mentfliriks connecting saidfelongated leverfto the other legs of said first mentioned levers in position toovscillate each of saidftirst mentioned legs through said predetermined arc upon movement of said elongated lever through said predetermined horizontal; movement, and

reciprocatory meansV mountedv onfone `of said walls and connected to said elongated lever for moving,v the latter through said horizontal movement. .6." A core for use vin forms for moldin'gfburia-l vaults,

andthe' like,comprisingY two pairs of oppositely disposed corner sections,=said pairsfof cornersectionsbeing mov- I able upwardly fand downwardly relative to Veach other, an elongated lever, Vmeans attached to the central portion of Vsaid elongated lever pivotally mounting said lever between said corner sections for lrotation through a predetermined movement 'ina substantiallyV horizontal plane, two substantially T-shaped levers, each of said T-'shaped levers having an elongated head andan elongated shank and being pivotally mounted at one end portion'v of lsaid head to Ia respective one of said corner sections'in oneiof said pairs, the other end portion ,of each tof, said heads having a normalV position wherein it projects downwardly and inwardly from saidV respectivecorner section, and an actuated Apositlon disposed above said normal position,

rodsY connectingv said corner sections ofthetother of said pairs tosaid other end portions of said heads, two elongated links, cachot said linkshaving one end portion attached' to a respective endrportion of said elongated lever, and another end portionattached to said lshankol a respective one of said T-shaped leversi1:1V position to oscillate said 'YT-shaped lever, and thereby swing. said other end portion thereof between said normal position and said actuated position, and thereby move said Corner sections in said other pair `upwardly and downwardly rel ative to said corner sections in saidV one pair, upon'rotation of said elongated lever through said predetermined movement, and rmeans including `a piston slidably mounted on one of said corner'sections and connectedrto one end portion of said elongated lever for rotating the latter throughsaid predetermined movement. Y

References Cited the file of thisl patent t UNITED STATES PATENTS i 1,134,543 McArthur i.- Apr. 6,' 1915 n Lucas n Feb. 7, 1.956

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