US2001795A - Collapsible mold for concrete burial vaults - Google Patents

Description

May 21, 1935. i w. A. PALMER 2,001,795

GOLLAPSIBLE MOLD FOR CONCRETE BURIAL VAULTS 1 v I Filed March 17, 1954 2 Sheets-Sheet 1 ALMER. Enventor Cittomegaz I WILLIAM AF May 21, 1935. w. A. PALMER COLLAPSIBLE MOLD FOR CONCRETE BURIAL VAULTS Filed March 17, 1934 2 Sheets-Sheet 2 WILLIAM AF'ALMER INVENTOR ATTORNEYS elevation.

elevation taken 7 Patented May 21, 1935 T UNlTED'ST-ATES] PATENT OFFICE COLLAPSIBLE MOLD FOR CONCRETE 'BURIAL vAUL'rs William A. Palmer, Muhlenberg Township,.Berks County, Pa. Willard S. Palmer, administrator I of said William A. Palmer, deceased,assignor to Mary L. Palmer Application March 17, 1934, Serial No. 716,043 GQlaims. (01. 25-130) without harmful prying so as to insure a more perfect finished casting.

'With' this primary object in view and with other objects that will later herein appear, my present invention consists in the improved collapsible mold hereinafter set forth, the details of its construction and the manner of its assembly and disassembly being fully described in connection with the accompanying drawings, and the novel features thereof specifically defined in the appended claims. i

Fig. l is a plan view of an assembled mold showing a preferred embodiment of my invention, the cover plates for the core being broken away at one end to more clearly show the underneath construction, and the casing broken away at one end. i i

Fig. 2 is a side elevation corresponding to Fig. 1, the casing being broken away at one end to show a portion of the enclosed core in side Fig. 3 is perspective sectional on the line 33 of Fig. 1, certain unitary parts being broken away or omitted forclearness of disclosure. i

Fig. 4 is a perspective showing of one of the complementary side plates of thecore, indicating its inner wall construction.

Fig. 5 is a perspective sectional elevation on the line 5-5 of Fig. 1, showing one of the transverse bracing plates employed in the core to unite the side plates of the latter and. form a support for the top plates of said core.

Fig. 6 shows in perspective one of the top plates for the core.

Fig. 7 is an end elevation of the assembled mold shown in Figs. 1 and 2. s

Fig. 8 is a cross sectional elevation taken on the line 8-8 of Fig. 1.

Fig, 9 is a plan view of an assembled mold adapted to cast a complementary cover or lid for Fig. 9.

Fig. 11 is a cross sectional elevation taken on the line ll--l I of Fig. 10.

In the preferred embodiment shown in Figs. 1 to 8, the mold comprises a pallet A, casing B y and core 0, in which the vault or box is preferably cast in an inverted position, while Figs. 9, 10 and 11, show the mold for the complementary lid comprising a pallet A and form C supported thereon, on which support the plastic material is laid and its exposed upper surface finished by a screed 0. of proper shape, as well understood. And as disclosed in the drawings I prefer to employ metal throughout the form as best lending itself to sturdy structure with minimum bulk, and its smooth hard surface contacting with the plastic 15 material producing a smooth finished surface on'the casting.

Referring particularly to Figs. 1 to 8 inclusive, the pallet, indicated generally by the reference letter A, comprises a rectangular platform I, preferably having its central portion removed for purposes of lighting the same, and constructed from a single metal sheet, ormade up of united sections as desired, so as to provide a continuous peripheral surface 2 lying in a. horizontal plane 25 to support the upstandingwalls of the casing and core and contact with the plastic material to form a smooth finished top edge on the casting. The platform, as shown, may be strengthened by transverse brace members 300 and if desired, may .30 have rollers or casters, not shown, to facilitate moving it from place to place. Fixed to the platform surface 2, as'shown, are spaced angle bars3 and 4, extending continuously around said periphery and their upstanding flanges, 5 "and6 respec- 35 tively, forming parallel supports to fixedly space the casing and core walls engaging against their opposing faces. Said angle bars, 3 and 4, further act to reenforce said platform I and assure its rigid resistance against sagging.

The mold casing, indicated generally by the reference character B, comprises similar side walls, indicated generally by reference I 0, I0, and

similar end walls, indicated generally by references II, II, each being preferably constructed as a separate unit, and jointly forming an open top rectangular frame, as shown,- with its bottom edges resting on platform surface 2 and engaging against peripheral support 5 on the latter. Each side wall [0, as best seen in cross section in Figs. 50 3 and 8, is shown as having an intermediately inclined portion I2 uniting the pallet contacting portion [3 to'the upper portion 14, which latter extends in a vertical plane inwardly spaced from the vertical plane in which portion 13 extends. 5

bulging to the side wall I B which may be further strengthened, if desired, by vertical outer ribs l5, and a top flanged bar l8 as shown. The end walls are indicated as having an angular cross section similar to the side walls, and the similar corresponding portions have the references l2, l3, l4 and IE, but because of their reduced length do not require the ribs IS. The end walls IL! I, are shown as abutted against the edges of the side walls H2, l0, and preferably further engage the. latter by side flanges IT, and fillet extensions l8,

the former bearing against the outer surface of the adjacent side wall If], and the fillet bearing against the opposing inner face and producing a rounded corner on the casting. The pallet flange 5 securely retains the bottom edges of the casing walls in assembled position, and tie rods I9, 19, engaging in the apertured projecting ends of angle bars l6 removably unite their upper ends.

The core C, as shown, comprises side walls, indicated generally by references 25, 20, end walls, indicated generally by references 2|, 2 l, and a top wall, indicated generally by reference 22, and when assembled determining the inside surface of the casting. The side and end walls rest on pallet A with their lower ends engaging peripheral flange 6 on the latter, and top wall 22 is located in a horizontal plane below the plane of the top of casing-B, the depth determining the thickness of the bottom wall of the casting. The end walls :21, 2! are shown as separate units of similar construction and each comprises a flat plate 33 of suitable thickness and size having .its lower edge resting on pallet surface 2 against flangefi thereon, to which latter it is preferably held as by one or more offset clips 3| secured to plate 3|) and slidable over flange 6 to clamp against the inner face of the latter. A shelf 30I, adjacent the top edges forms a support for top wall 22, and hooks 32, or equivalent devices, extend from the ends of shelf 39! to suitably apertured flanges 33 on the side walls 20, 20, to secure the latter in engaging contact against the side edges of end plate 30.

The side walls 20, 20, are separate units of similar construction, each wall 20 being preferably made up of a plurality of complementary plates, the drawings indicating three plates 35, 36,- and 31, having their lower edges resting. on pallet surface 2 against flange 6 thereon and their meeting edges abuttingin a vertical plane. To rigidly unite the abutting ends and fixedly space the side walls, I employ bracing plates 38,

two being indicated, and each extending in a vertical plane from the abutting plate edges on one side to the abutting plate edges on the opposite side; and the preferred means shown for rigidly securing said bracing plates to said side plates comprise reversely extended locking flanges 39 and 48 secured to each side of said .bracing plate 38, and slidably engaging with the offset free edges of locking plates 4! and 42 secured respectively adjacent the abutting edges of; two adjoining plates.

7 I This means provides for securing theside' plates 35, 36, and 3'! of each side wall 20 in true alinement, rigidly braces the walls 20, 2!] in spaced relation, and permits the sliding removal of said bracing plates 38 in disassembling to facilitate stripping the mold as later herein described. The lower edges of the side plates 35, 36, and 31 may be secured to ,flange 6 bymeans similar to that employedfor the end plates and as indicated at 3!. And each bracing plate is shown as having secured thereto on opposite sides adjacent to top edge an angularly inclined flange 43, M, which jointly form a transverse V-shaped shelf, as shown, to support the top wall 22; the side wall plates 35, 36, and 31 each having an inwardly extending shelf 45 adjacent its top edge to further support said top wall 22.

The top wall 22, in the preferred showing of the drawings, .ismade up of a plurality of separate plates, three plates 53, 5! and 52 being indicated, having their meeting edges abutting in the plane of the bracing plates 33; which meeting edges as shown, have downwardly inclined bends engaging in abutted relation in the V-shaped shelf 43, A l on bracing plates 38, said construction providing for forming raised load supporting ribs on the inside bottom of the" casting. The top wall plates rest also on shelf plates 33! and 45 at a level with the top edges of the side and end walls, which means keep them in alinement to form the top wall 22 of the core.

From the foregoing description and inspection of the drawings'it will be seen that when the core C and casing B are assembled on pallet A, they form a peripheral channel 60 extending around the core C between the walls of the latter and the spaced walls of said casing A, and

upwardly from the surface 2 of pallet A to opentop communication with the horizontal level defined by the spaced relation of core top wall 22 below the top edges of the walls of casing B.

In forming a casting, the aforesaid space. is filled with. suitable'plastic material, and excess material above the top edges of-casing B, removed by a screed whichmay be slidably guided on said top edges.

ly toslidably disengage their connections to the side wall plates 35, 3'5, and 31, and the end hook ,devices 32 disengaged from their connections to flanges 33, which frees the plates 35, 36, 31 I for individual removal.

To form a depressed seat in the top edge of the casting adapted to receive 7 the complementary lid, I preferably employ, as shown, suitably shaped strips 6H, 6H, secured to and forming an enlarged edge thickness on the pallet-contacting ends of side and wall plates 28, 20, and 2i, 2!, of the core B, said strips being made of separate lengths conforming to their respective wall plates, and jointly forming a continuous peripheral core extension toward the casing wall portions, the result of which construction on the casting is to form a recess in the flanged top edge of the latter to receive the edges of a cast lid or cover.

Said cast lid or cover may be readily formed in a mold structure such as shown in Figs. 9, 10

and 11, in which is shown a pallet A and a core 0'. Pallet. A is similar to pallet A, having a platform I on the surface 2' of which a single peripheral flange 5' is secured, acting in this connection to define the outer edge walls of the lid casting; and the core C is in this case made as a single unit having a fiat peripheral border 10, surrounding a longitudinally extending convex or hemi-spherical ridge H formed by a bulging of the material within said border; the border resting on the surface 2' of pallet C and being positioned thereon by the peripheral flange 5 within which it closely fits. To facilitate stripping the mold from the casting, the ends 72, 12 of said ridge are shown as angularly inclined relative to said border, which inclination is an important factor as offering no resistance when the form is being removed. The pallet may be strengthened as shown by transverse brace members 390 and the underside of ridge ll may also be strengthened by ribs or the like if desired, but not shown in the drawings.

In the form of lid mold above described, the plastic material is laid on the form C and confined by the peripheral flange 5', and excess material removed by a suitable screed slidable on the top edge of said flange and adapted to.

shape the top surface of the plastic material and leave a proper thickness between. The mold is preferably inverted for stripping, when the pallet A may be readily lifted off, and then the core C removed as a unit, its described construction with angled ends l2, l2, facilitating its being lifted from the casting with little or no prying, and insuring a more perfect finish.

From the foregoing description it is believed the nature of my invention, and the manner of assembling and disassembling the separate units will be readily understood. Such units are of a size and weight that may be easily handled, of

a sturdy build to withstand repeated use, and the opentop mold form for both vault and lid facilitate the introduction of the plastic material and the ready removal of all in excess of their needs by scraping it off with a screed of suitable shape, as readily understood.

The improved construction further provides adequate bracing by the pallet flanges 5, 6, and 5'; interlocking walls of the casing B, braced rigid construction of the core C, and the ridged form of core C, to resist any distortion in the desired mold form from pressure of the applied plastic material. And such material, it will be understood, may be reenforced, if desired, during its casting, by the introduction of suitable metal rods or wire mesh, in a manner well understood.

The disclosure of the drawings indicates a preferred embodiment of my invention, which, it will be understood, may be modified by changes or additions within the spirit and scope of the following claims.

What I claim,-

l. A collapsible mold for concrete burial vaults and the like, comprising pallet, casing, and core sections; said pallet having parallel spaced flanges forming continuous rigid supports for the contacting edge portions respectively of the casing and core sections; said casing having upstanding sides and ends, engaging corner edges, and tie rods uniting said sides to said ends; and said core having its sides and top formed of a plurality of plates with abutting meeting edges, a transverse bracing plate extending from the abutting edges of two plates on one side to the abutting edges of two plates on the opposite side, complementary means on said bracing and side plates slidably engageable to rigidly lock said side plates in edge abutting relation to said bracing plate, and supporting means on the topedge of said bracing plate for the meeting edges of two adjoining top plates.

2. A collapsible mold for concrete burial vaults and the like, comprising pallet, casing, and core sections; said pallet having parallel spaced flanges forming continuous rigid supports for the contacting edge portions respectively of the casing and core sections; said casing having upstanding sides and ends, engaging corner edges, and tie rods uniting said sides to said ends; and said core having two opposing sides and its top formed by a plurality of plates having their edges abutting in a plane transverse to said sides, a bracing plate in said transverse plane, complementary means on said bracing plate and the ends of said side plates slidably engageable to rigidly lock said side plates in edge-abutting relation to said bracing plate, and supporting means on said side and bracing plates for said top plates.

3. In a collapsible mold for concrete burial vaults and the like, a core section having opposing walls formed of a plurality of plates with abutting meeting edges, a transverse bracing plate extending from abutting edges in one wall to abutting edges in the oppositewall, and complementary means on said bracing and Wall plates slidably engageable to rigidly unite said wall plates in edge-abutting relation to said bracing plate.

4. In a collapsible mold for concrete burial vaults and the like, a pallet having flanges forming an upstanding rectangular support, and a core having its sides and ends engaging against said support, the sides and top of said core being formed of a plurality of complementary plates having their meeting edges in a plane transverse to said sides, a bracing plate in said plane, complementary means on said bracing and side plates slidably engageable to unite said side plates in edge-abutting relation to said bracing plate, and supports on said sides and bracing plate for said top plates.

5. In a collapsible mold for concrete burial vaults and the like, a core having opposing sides and its top' formed of a plurality of complementary plates having their meeting edges in a plane transverse to said sides, a bracing plate in said plane, complementary means on said bracing and side plates rigidly uniting said side plates to said bracing plate, said top plates having downwardly angled bends at their meeting edges, and

said bracing plate having angled supports adjacent its top edge adapted to engage said angled bends of two adjacent top plates and support them in edge contacting relation.

6. In a collapsible mold for concrete burial vaults and the like, a core comprising upstanding sides and ends and a top formed of aplurality of complementary plates, said plates having their adjacent ends downwardly angled with their edges contacting at an angle, and transverse bracing plates within said core slidably engaging said side walls and having a V-shaped top edge adapted to receive said adjacent downwardly 311-. gled top plate ends and support the latter in edge-contacting relation.

WILLIAM A. PALMER...

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