US1461929A - Mold - Google Patents

Description

July 17, 1923.

G. K. MONROE MOLD 31 1922 3 Sheets-Sheet 1 Filed Jan.

' July 17, 1923.

5 Sheets-5heet 2 Filed Jan. 51. 1922 July 17, 192;.

1.461.929 G. K. MONROE w.

MOLD Filed Jan. 31. 1922 3 Sheets- Sheet s To all whom-italic comer nu".

Patented July 17, .1923.

"GILBERT K. Mormon, or- SIDNEY, oHIo.

T FmE-r Mom).

Application filed January 31, 1922. Serial No. 532,989.

Be. it, known that I, GILBERT K. non, a citizen of the United States, resid; ing at Sidney, in the county of Shelby, and State of Ohio, have invented certain i new and useful Improvements in Molds, of

there is employed a collapsible core and j I mortar board.

an outer separable wall.

f One of the objects of the invention is to providea structureof simple and cfiective form for supporting the mold proper during the pouring operation, so. arranged that ,it'fcazn be readily removed: from the mold after the pouring has been.

, 3 completed and immediately used for the purpose of supporting another mold for casting purposes; themolds proper. being left intact about the casting until the cur-. ing operation is .completed.

A further object of the invention is to provide in a. supporting structure referred to, or outer jacket as it will b e called,

means for centering the walls of the'mold. therein, and for properly spacing saidv walls with respect to each other; a more.

specific object inthis connection being to provide an improved form of pallet for supporting and spacing the lower ends of the mold walls, and falso to provide means on the outer jacket operable to.

center the core when about the mold; A further object of provide improved means for expanding the jacket is closed the core and holding the same in expanded position du the casting.

A further object of the invention is to ringthe pouring andcuring of provide a mold construction whichjwill be simple in construction, effective in operatlon 'and economical in manufacture and use. H

In the accompanying drawings;

Fig. 1 is a top plan viewwvith the mor- -tar board removed. j

Fig. 21s a v ew of one side of the structure.

Fig. 3 is a View of the opposite side,

of the same.

Fig. & is; a bottom plan,

MoN-

the. invention is to i F 5 isa vertical section Figf 6 is a transverse section on; the

line 6-6 of 2.

Fig. .7 is a topplan showing the. man}. ner of removing the outer jacket,

Fig. ,8 is a top plan showing the imor- 5 tar board'and trowel in position. H Fig. 9 s. a perspective view trowel.

Fig. 1 0 is a vertical section ot the up-l showingthe per portion; of the structure mortar board and .trowel. i

;Fig. '11 is Fig. 12. is a to p plan ,5

one of the core expanding rings. Fig. 13 is. a sectionon the line 13%13 of Fig. 12.

Referring ,tothe of the 1 perspective View i drawings, 1 represents the inner wall or core of the mold, formed of a single piece ofsheet metal bent to M cylindrical form, theside edges oi'fivhich overlap ,as showna-in Fig. 6. The outer.

wall ofithe mold proper is indicated at .2,

and this .wall is lik ewise formed of a single piece of sheet metal bent to" cylindrical form, the side edges of which have;

connectedtherewithaligned eyes 3 of sheet metal to receive :a removable. rod 4: to.

thereby temporarily hold the wall 2 in cylindrical form. formed of two sheet metal sections 5 and 6 having two of the side edges hinged together by the hinges 7 and the .othera edges provided with devices whereby the acket. may be contracted and expanded.

One set of these devices is. located atthetop and another set at the bottomof the jacket and each consists of a'lever 9 piv- The vouter jacket is" otally connected with a U-shaped rein forcing ring 8 with which. the jac'ketfsections are preferably provided and havingv pivot-ally connected therewith a short distance from its pivotal point a link,9, hav

ing a notch 10 on its inner side near the.

outer end thereof whereby the. link may be engaged with a pin lli carried-by the; ring 8 on the other section 5. By manipulating the levers 9 the jacket section may be. contracted or expanded. i

Coopeating with the bottom The v outer edge of the horizontalportion of of the jacket section and their lower rein of outer acket, is a base ring or pallet 12 ofT-shap ed form in cross-section, as shownin Fig. 5;

the pallet is clamped against the lower edges rests upon the horizontal portion ofthe pallet'and to support the core the pallet has a series of fingers 12*, which project inwardly from the Vertical part of the pallet in a horizontal plane below that of the horizontal part of-the pallet.

For the purpose of expanding the core, thereare two preferably U-shaped split expanding rings 16' employed. Each of these rings has pivoted thereto near its ends a'palr ofsubstantially L'-shaped levers 17 w ich are in turn pivoted together at-the points of the juncture of the arms of the respective levers, by the pin 18. To hold the rings in contracted position a short rod 19 is pivoted to one lever 17 of a pair and has a hook 20 to engage an eye 21 on the other lever of the pair, the hookbeing. disengaged from the eye before the levers are manipulated to expandthe ring against the inner wall of shelf for a mortar board'2l; the board having downwardly projecting lips 25 fitting the inner edge of the shelf to hold the] board in position; one of these lips be ing placed between the inwardly extending lugs 22 1 (Fig. 1) and another lip against the opposite lug 22 to keep the board from turning. A trowel 26 has on its rear side an eye 27 which may be loosely fitted over the vertical stem 28 of the mortar board,the outer end of the trowel having a handle 29 and a portion26 bent I at right-angles to the main portion 26 and lying immediately above the upper edge of the outer wall 2 when the trowel is in working position. The trowel extends across the board on a line passing at one side oi the center of the board so that the effect of the rotation of the trowel is'to sweep the material into the molding space.

To center theupper portion of the core when the jacket is contracted, the upper reinforcing ring 8 of the jacketsection carries a series of centering devices, each consisting ofaj'horizontal finger 30 having a vertical shank 31, square in "cross-section and hav- V ing areduced rounded extension 32. The

shank lies in a square opening 33 "in the upperhorizontal portion of the topring 8 The limit of expansion of the while the extension 32 projects-through a round opening in the lower horizontal portion of the ring. Before the core and outer wall of the mold areinserted in the j acket,.

these fingers standat right-angles to the position shown, but after the insertion of the core and wall, the fingers are turned to the position shown by lifting their shanks from the square openings 33, giving the fingers a quarter turn and again placing the shanks in the openings, so that when the jacket is'contracted the fingers will engage the ring 22 and thus center the upper portion of the core inthe outer wall 2.

The parts are assembled for the purpose of making a casting by first attaching the base ring or pallet to the lower edge of the jacket'by placing the outer horizontal portion of the pallet under the flangesof the nuts 13 and then tightening the nuts. The

latches 9 are then engaged with the pins 11 and the levers 9 turned to contract the jacket. Next, the collapsible core is inserted I in the acket with its lower end resting on in the core near the lower end thereof and expanded and the other expansible ringinserted in the core near the upper end therefor but left temporarily contracted. The ring 22 is then inserted over the upper end of the core. is then inserted in the jacket, first expanding the top of the jacket by manipulating the upper lever 9. The centering fingers 30 at the top of the jacket" are then turned to position' and the upper end of the jacket contracted or closed which causes the fingers to contact the ring 22 and center the core. The mortar board is then placed on the top of the core retaining ring 22 and the trowel inserted on the board. The material form ing the casting is placed on'the mortar board and by then rotating the trowel the material is fed to the space between the core and outer wall of the mold. V v

After the casting has been completed the entire structure, minus the mortar board and trowel, is removed to the curing place. The jacket is then removed by manipulating the levers to expand its walls, the extreme ends of the links 9 being placed against the pin 11 to assist in separatingthe acket from the inner wall, if necessary. The ring 22 may also be removed. The rest of the structure is left intactto permit the material of the cast-' ing to cure orset. After setting, the mold is turned upside down and the pallet removed.

The core expanding rings are then released and removed and the core contractedand re- The outer wall 2' of the mold base ring, upper retaining ring and core' can panding rings, which master jacketmay be i removed as soon as the pouring of the cast ing is complete and may be used with another setof mold parts. This furnishes an economical and simple molding, apparatus,

for the parts of the apparatus other than the jacket may be of the simplest construction which may be duplicated in sufiicient IlIllIl-l her at a comparatively small expense to make a large number of castings. i

By the peculiar construction of the base ring described, including the supporting fingers for the core, any material which leaks by the horizontal portion of the'casting falls to the ground instead of accumulating and hardening on the ring, thus obviating the necessity of cleaning the ring. By the construction of the core described it may be adjusted to different diameters to adapt it to different sized moldsor to regulate the thickness of the walls of the casting.

The mold structure described is adapted for operation on the line of the ditch in which the tiling is to be used and may receive any suitable form of reinforcement for the material, as the tile may be moldedfrom quite wet plastic material, but which may be puddled or spaded in the mold to obtain a smooth surface and eliminate air pockets.

Having thus described my invention, I claim 1. In a structure of the character described, inner and outer independent walls forming a molding space, an outer retaining member, and means carried by said member for supporting said walls in spaced relation with each other.

2. In a structure of the character described, inner and outer independent walls forming a molding space, an outer retaining member, and means carried by said member for supporting said walls in spaced relation with each other, including a base ring to form a bottom for the molding space.

3. In a structure of the character described, inner and outer independent walls forming a molding space, an outer retaining member, and means carried by said member for supporting said walls in spaced rela tion with each other, including a plurality of fingers to engage the upper portion of the inner wall.

4. In a structure of the character described, inner and outer independent walls forming a molding space, an outer jacket, together with means for clamping the same to the outer wall, a base ring carried by said jacket to support the lower ends of said walls in spaced relation and to form a bottom for the space between said walls, and fingers can ried by the upper part of said jacket to en gage the upper end of the inner wall to center the same within theouter wall.

5. In a structure of the character described the, combination of an inner eX- pansible core together with means for holding the same in expanded position, an outer wall cooperating with the core to form a molding space,anfenclosing jacket for said core: and wall, a base ring detachably connected with said jacket and arranged to support the core and wallin spaced relation with each other and forming a bottom for the molding space, means for clamping said jacket to said outer wall, and means carried by said jacket for centering the, upper end of said core in said outer wall.

6. In a structure of the character de scribed, the combination of aninner, expansible core formed of: a single piece of sheet metal bent. to cylindrical form, an outer wall cooperating witlrsaid core to form a, molding space, an enclosingjacket for said parts having means for clamping the same to said outer wall, and means car ried by said jacket for supporting and spacing the lower ends of said core and wall, a ring enclosing the upper edge of said core, means for expanding said core, and means carried by said jacket and engaging said ring for centering the core within said wall.

7. In a structure of the character described, the combination of an inner expansible core formed of a single piece of sheet metal bent to cylindrical shape, an outer wall cooperating with said core to form a molding space, an enclosing jacket for said parts including means for clamping the same against the outer surface of said wall, a base ring removably attached to the lower end of said jacket, said ring having a horizontal portion and a vertical portion and also having a series of supporting fingers projecting inwardly therefrom in a plane below said horizontal portion, said core being supported by said fingers and said wall supported by-said horizontal portion of said ring, and means carried by said jacket for centering the upper portion of said core. j Y 1 8. In a structure of the character described, inner and outerindependent removable Walls forming a molding space, an outer retaining member formed of two sections hinged together at two adjacent sides, means carried by the other sides for contracting said member about said outer wall, and means carried by said member for supporting said walls in spaced relation.

9.111 a structure of the character described, inner and outer walls forming a molding space, an outer jacket formed of two sections hinged together at twoadjacent side edges, a plurality of levers carried means for holding said walls in spaced re lation, a inortar board supported on the upper edge of said inner wall andtermi'nate ing at a'point adjacent the space between said walls, and a revoluble member carried by said mortar board and projecting to a pointover the space between said Walls for feeding materialto the molding spa'ceas the same'is revolved.

11. In structures of the character'described, inner and outer cylindrical walls forming a molding space, means for holdingnsaid walls in spaced relation, a mortar board carried by the upper end of the inner .12. In a structure of the character described, inner and outer cylindrical walls, means for supporting said walls in spaced relation to each other, said inner wall consisting of a single piece of sheet metal, and a plurality of expansible devices toexpand said inner wall, each device consistingof a split ring and a pair of levers pivotally connected to said ring, one on each side of the split therein and also pivotally coir nected together at intermediate points.

In testimony whereof, I have hereunto set my hand this 28th day of January, 1922.

' ei BERT KMONROE.

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