US1658255A

US1658255A - Concrete-molding apparatus

Info

Publication number: US1658255A
Application number: US129896A
Authority: US
Inventors: Errett S Rhoads
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-08-18
Filing date: 1926-08-18
Publication date: 1928-02-07
Anticipated expiration: 1945-02-07

Description

2 Sheets-Sheet 1 Q Dryer/far; N IL T/"Fiw4ais. 5

E. S. RHOADS Feb. 7, 1928.

CONCRETE MOLDING APPARATUS or g nal Flled Aug. 18 1926 Willa-as 2 E. s. RHOADS CONCRETE MOLDING APPARATUS Feb. 7, 1928.

2 Sheets-Sheet 2 Original Filed Aug. 18, 1926 0941B. v H.

Patented Feb. 7, 1928.

UNITED STATES.

ERRET'I. S. RHOADS, OF KANSAS CITY, MISSOURI.

CONCRETE-MOLDING- APPARATUS.

Application filed August 18, 1926, Serial N0. 129,896. Renewed September 19, 1927.

"This invention relates to molding appa: ratus, more especially 101 the productionoi concrete building units, and is designed as an improvement in the apparatus disclosed by United States Letters Patent Number 1533,9205, issued under date of October 31, 1922, to W Nelson, under whom Ihold exclusive rights to certain parts of the United States, my primary object being to produce a strong, durable and eflicient construction composed of a plurality of members so formed and related as to insure unif'orm and interchangeable units which can be setor assembled by unskilled labor, to form a wall with the assurance that the wall shall be true and straight in all directions and hence possess the maximum strength and rigidity compatible with the material used.

\Vith thesegeneral objects in view, the invention consists in certain novel and useful features of construction and combinations of parts as hereinafter described and claimed; andin order that it maybe fully understood, reference is to be had to the accompanying drawings, in which Figure 1 is a top plan View of a molding apparatus embodying the. invention.

Figure 2'is a longitudinal section on the line lL-ll of Figure 1.

Figure 3 is a transverse section onthe lme III-J11 of Figural. p

Figure 4; is an inner face view of one of the side members of the molding apparatus.

Figure 5 is an inner face view-of one of the end molding members.

Figure 6 is, a section on the line VI-VI of Figure'l. V 1

Figure 7 is a section on the line VII-VII of Figure 6. V

Figure 8 is a sectional perspective view of a part of one of the members 7.

Figure 9 is a View showing one of the concrete units produced by the apparatus, partly in elevation and. partly in central section, and also shows certain of the parts broken .away to show features otherwise not disclosed. Y

In the said drawings, a suitable support for the mold apparatus consists of a platform 1 provided with parallel side walls 2 and 3, and parallel end walls: 1 and 5, one side wall and one end wall being readily removable for the convenient assemblage of the mold members and for the removal thereof from the support, to facilitate the removal oi the molded units.

The molding apparatus comprises unhas a longitudinal bulged or bowed central portion, identified respectively by the characters 11 and 12, the bowed portions being inwardly disposed with' respect to the square openings formed'thereby.

'lhe side members 6 fit flatly with their hollow sides out, against the side walls2 and of the support, and have straight or square ends abutting the end walls 4 and 5 of the support, and the end members fit likewise against the supportends l and 5 and are bevelled at the ends of thebowed portions at 13 to abut at such points and form mitered joints with the'side members. 1

' The intermediate transverse members 8 are arranged in pairs fitting and preferably welded flatly together, with their hollow or channel faces together, and their ends are bevelled as at 14, to form miter joints with the side members. The longitudinally extending broken members 9, are of length to fit between and properly space apart the end and intermediate transverse members and have bevelled ends 15 abutting and forming miter joints with the engaged end and intermediate members, the sald broken longitudinal members, like the intermediate transverse members, being arranged and fastened in sidewise abutting pairs with their hollow or channel. faces abutting; the construction and arrangement as thus far described being the same as in the aforesaid patent.

To provide a perfectly stiff construction against springing or warping and hence insure units of perfectly square and uniform size, all of the members are provided with straight or square end channelled margins and with braces spanning the channels of the bulged portions, and in the members 8.

the braces are so arranged that they form external lugs, which in conjunction with the channelled margins of members 11, constitute locks for holding all of the members in the required relation.

In each member the channelled margins are U-shaped, face each other, and lie equal distances from and on opposite sides of the center of their respective bulged portion, each of such channelled margins comprising opposite arms 16 and 17 spaced apart by bridge or connecting portions 18, and in the intermediate members 8 and members 9, the abutting arms 1'? are welded or otherwise fastened together.

The braces which function only as such, are in the form of bars 19, spanning the bulged portions and riveted or otherwise secured to. the inner faces of the arms 16 of the marginal channels of the members 6 and the sections of the broken longitudinal members. 8.

The other braces 20 are similarly fastened to the outer faces of the arms 16 of the channelled margins of the end and intermediate transverse members, and extend through openings 21 provided in the bulged portions by stamping tongues 22 therefrom. The braces 20 at their ends thus externally ex posed constitute guide lugs, as explained, for the placement of the sections of the members 8 relative to the transverse intermediate members and the end members, it being noted by reference to Figures 1 and 7, that the salt exposed ends or lugs are fitted in the marginal channels of the abutting members and thus serve in conjunction with the side walls 2 and 3 and end walls 4 and 5 tov lock all of the members firmly together.

In all of the members having bevelled ends for their bulged portions so as to abut the side of and form a miter joint with other members, the end extremities of the arms 17 are cut-away as at 23, as if full length such arms would engage the lugs and prevent the proper close fitting assemblage of the members necessary in the production of uniform concrete units 24, each of which, it will be noted by reference to Figures 2 and 9, has edge channels 25, conforming to the bulges of the members between which it was produced.

These units are adapted to be assembled in horizontal superposed courses to form a wall or the like, and to facilitate their proper and accurate arrangement, the opposite arms 16 of the mold members forming each square opening, are respectively provided with conforming tenons 26 and recesses 27, to respectively produce upon the concrete units, recesses 26 and tenons 27, the tenons and recesses of abutting units fitting together in interlocking relation when assembled.

lVhen the molding members are secured in place on the support, as explained, the

openings 10 are filled with concrete or the like, and a suitable tool employed to level the mixture with the upper side of the members. After concrete units thus produced have set the walls 3 and 5 are removed. The corresponding end and side members 7 and 6 respectively, are then removed and then the lower end of the right hand intermediate member 8 is worked with a slight pivotal action to the rightat its lower end and this action results in disengaging said member from member 6 and the members 9 to the left of the manipulated member 8 and in sliding the members 9 to the right of said member and the concrete units to the right so that the latter may be removed. The same manipulation is followed progressively to the left until the left hand member 7 has been slidin ly displaced. Then substantially the same manipulation but in the reversed order, is followed, to re-assemble the various memexcept that each of the longitudinal members 9 individually placed into end abutting relation with the lefthand member Concrete units produced by this apparatus are absolutely uniform in size and shape, and unskilled labor can be employed in erecting walls composed of such units, as the tenons of any of the units will properly fit the recesses of any of the other units in the same horizontal course or in underlying or overlying courses. It is essential, of course, that che base course of a wall or walls shall be horizontal and inclined neither inwardly nor outwardly, and to set this course, skill and experience would be necessary. The setting of the remaining units regardless of the height to which the wall or walls rise, requires only ordinary or unskilled labor and hence the wall or walls can be erected expeditiously and economically. The engaging tenons and recesses not only insure the proper assembly of the units, but also serve to guard against displacement or disarrangement thereof when a liquid concrete mixture is poured into the upper ends of the passages formed by and between abutting mold members, and are especially desirable if the mixture requires tampi'ng to insure the provision of a dense and homogeneous skeleton binder for the units composing the wall.

From the above description, it will be apparent that I have produced molding apparatus embodying the features of advantage set forth as desirable in the statement of the objects of the invention, and which may be modified in minor particulars Within the principle and scope of the appended claims.

I claim:

1. A molding member of cross-sectional i marginal longitudinallyextending channels facing each other and on opposite sides of the horizontal channel.

2. A molding member .of cross-sectional form to provide a central, horizontal, longitudinal channel and a corresponding bulge at opposite faces, the member also having marginal longitudinallyextending channels facing each other and on opposite sides of the horizontal channel, the arms of the channelled margins most remote from the bulged face being cut-away at theiriends short of the ends of the companion arms and the base portions of said facing channels.

3. A molding member of cross-sectional form to provide central, horizontal, longitudinal channel and a corresponding bulge at opposite faces, the member also having mar inal longitudinallyextending channels facing each other andon opposite sides of the horizontal channel, and braces spanning the horizontal channel and secured at their ends to the arms of the marginal channels nearest the said bulged face.

tA molding member of cross-sectional form to provide a central, horizontal, longitudinal channel and a corresponding bulge at opposite faces, the member also having marginal longitudinally-extending channels facing each other and on opposite sides of the horizontal channel, and braces spanning the horizontal channel and extending through the wall thereof'and secured to the arms of the marginal portions on the op' posite faces thereof from the channels of the marginal portion to provide external guide and locking lugs.

5. In a molding apparatus, a pair of men1- bers of cross-sectional form to provide a pair of central, longitudinal, oppositely-disposed communicating channels and corre sponding bulges; each member also having inwardly-facing marginal channels at their hollow or channeled faces, the abuttlng arms of the marginal channels being secured topair of central, longitudinal oppositely disposed communicating channels and corresponding bulges; each member also having inwardly-facing marginal channels attheir hollow or channelled faces, the abut-- ting arms of the marginal channels being secured together and cut-away short of the ends of the other arms and the base portions of the channels; the bulged portions'being bevelled at their ends, and braces spanning the bulged por ions at the hollow sides thereof and extending through the wall thereof and lifting and secured at their ends to the outer faces of the full-length arms of the respective marginal channelled portions.

7. A molding member arranged rectangularly: and of cross-sectional form to provide central, longitudinal channels at their outer faces and corresponding bulges at their inner or opposite faces, and marginal flanges at opposite sides of the channels; opposite members having alined tenons and recesses respectively at the inner sides of said marginal flanges.

In witness whereof I hereunto afiix my signature.

- ERRETT S. RHOADS.