US1995050A - Wall form - Google Patents

Description

March 19, 1935.

J. H. BEAUCHAMP El AL.

WALL FORM Filed Oct. '7, 1953 2 Sheets-Sheet 1 INVENTOR March 19, 1935.

J. H. B'EAUCHAMP ET AL WALL FORM Filed Oct. 7, 1935 lzr 2 Sheets-Sheet 2 INVENTORS mm AM M4, 4 14 3. M160 Patented Mar. 19, 1935 WALL FORM John H. Beauehamp, Coraopolis, and James S. Miller, Pittsburgh, Pa, assignors to The Dravo Contracting Company, a corporation of Pennsylvania Application October 7,

6 Claims.

This invention relates to improvements in wall forms, for use in the building of walls and like structures of concrete; and the objects in view are simplicity of structure, facility in application,

and adaptability to varying conditions of use.

A wall form embodying the invention is illustrated in the accompanying drawings. .Fig I is a view in side elevation of the wall form in service, in the progress of the work of building a wall. Fig. II is a view of this wall form in horizontal section, on the plane indicated by the line IIII, Figs. I and III. Fig. III is a view in vertical and transverse section, on the plane indicated by the line IIIIII, Fig. II.

The concrete confiningand shaping surfaces are afforded by wooden sheeting 1 running vertically and supported by horizontally extending Wale-pieces 2. These Wale-pieces in turn are carried by cantilever legs 3 that form part of a suitably supported framework.

The cantilever structure is best illustrated in Fig. III. Two oppositely arranged beams 3 that together constitute a pair, and that carry at their lower ends the Wale-pieces 2 and the sheeting 1 home thereby, are at their upper ends spaced apart by a strut member 4, while intermediate their extent the beams 3 are engaged and held together by a tie member 5. It will be perceived that the outward lateral thrust of the body of concrete poured between the opposite shaping surfaces afforded by the sheeting l is sustained by the cantilever structure, the member 4 being put under compression and the member 5 under tension.

In detail, the cantilever structure is formed of suitable material, and is refined to meet conditions of service. The beams 3 are lengths of I-beam of standard cross-section. The strut member 4 is formed of a pair of channels with bearing blocks 41 between (of. Figs. I and III), and these bearing blocks may be made adjustable longitudinally of the pair of channels. Similarly, the tie member 5 is formed of a pair of channels with pairs of bearing blocks 51 and 52 between (of. Figs. II and III) and thes'eblo'cks also may be made adjustable longitudinally of the pair of channels. For minute adjustment of beams 3 wedges 53 and 54 are introduced between the beams 3 and the bearing blocks 51 and 52, and these wedge blocks are made adjustable by mounting them upon screw-jacks 55 that are carried by the beams 3.

The lengths of the strut member 4 and of the tie member 5 are suited to the width of the wall to be built; and the bearing blocks 41, 51, and 52 1933, Serial No. 692,602

are made adjustable upon members 4 and: 5, to the end that the opposite facesof' sheeting I may. be brought to minutely accurate positions; When a. section of wall has been shaped and the con:- crete has set, and the form is to be opened, the wedges'53 that engage the bearing blocks 51 the tie member are eased off, while the wedges 54 that engage the bearing blocks52-are advanced, with the efiect that the sheeting 1 is broken away from the concrete by a strain that isgeffective from the upper edge of the work downward;

Two or more cantilever structuressuch as that described (the particular embodiment here shown includes four) are assembled in a single framework. This framework includes, inthis. instance, a pair of parallel, spaced-apartsill members 6. that extend longitudinally of the work, with which the cantilever structures are. assembled. These cantilever structures extending transVersely of the, pair of sill members. arearrangedin the inverted positions shown with their strut members 4 extending above the sill members and their arms 3 extending vertically and symmetri cally upon. opposite sides of the sill members. The concrete-shaping faces of sheeting I extend below the sill members. a The sill members Gjand'f the tie members 5 of the'cantilever structures are secured together, and thus a rigid framework is formed. e

The sill members 6, consisting of pairs of channels properly united (Fig. III) may be properly punched, and in the assembly the framework may be organized by spacing the, successive cantilever structures along the sill member in such number and at suchintervals as is suitable to the work in hand. v H g 7 This framework will be supported in such mane ner as circumstances dictate. Referring particularly to Fig. I of the drawings, the wall form is shown in position for building a section of awall in course of erection. An underlyingw portion or? the wall W has. already been built, and on the left the Wall has been raised to greaterl-ieightv than on'the right. The form is in position for filling in a step-like recess formed between. the. underlying portion and the higher portion on} the left. p v V v The sill members 6 will in. Fig. III be seen to be formed each of a pair of channels; and (turn-5 ing to Fig. I) it will be seen that at the right hand end of the sill plates bearing blocks 61 and 62 are secured between the channels. Between these bearing blocks beam legs '7 extendvertically, the arrangement being substantially identicontinuous horizontal base.

cal with that already described of the cantilever beam legs 3 with respect to tie, member 5. The beam legs '7 are adjustably secured to the sill members 6 by means of wedges 63 and 64, which in the manner already described are driven by screw-jacks 65 mounted on the beam legs. The beam legs attheir lower ends are equipped with wheels 76, and the wheels rest on tracks 8 that extend longitudinally upon the previously formed lower portion of the uncompleted Wall. At the opposite, left-hand end, the sill members 6 are equipped with wheels 66, and the wheels rest on tracks 9 that extend longitudinally upon the previously formed upper portion of the unfinished wall. I

The beam legs '7 serve as support for sheeting 11 which, carried on Wale-pieces l2, constitutes the end member of the form. The space that is immediately to be filled with concrete, defined .on

the two sides by the two faces of sheeting 1 first described, isdefined at the left end by the previously formed body of concrete, and. at the right end by the face of sheeting 11. Since the beams 7 lack the cantilever feature that beams 3 pos sess,they are attheir lower ends advantageously braced for service by means of struts l3.

It will be perceived that, the form being in the position shown, a section maybe added to the wall by pouring concrete into the space within it. Whenthis added section has set, and when the form has, in the manner indicated been released from contact with the fresh concrete, the

rails 8 and 9 being *extendedythe form may be shifted in its integrity from left to right, and brought again to an identical position, where, after the form elements have been properly adjusted, a succeeding section of wall may in like manner be built.

It is manifestthat the wheels at the left-hand end of sill member 6, as seen in Fig. I, may be replaced by beams such as the beams ,7 at the right-hand end, together with the associated members; and that thus the form may be adapted to the'erection of a wall unit or section upon a Alternatively, the beam '7 at the right may be removed, and the sill members 6 may be supported on an adjacent step in the uncompleted wall, and thus an intermediatezwall section maybe formed between two previously formed sections.

We claim as our invention:

i. In a wall form for concrete building a carriage, a cantilever structure mounted on the carriage and including a plurality of pairs of arms extending in parallelism, a pair of mold members borne by the pairs of arms at one end thereof, a strut member arranged between the arms'of each pair at the other end thereof, the strut member being equipped with bearing blocks adjustable in their positions longitudinally of the strut member, upon which blocks when the parts are assembled the said arms at their ends immediately bear, and a tie member for each pair of arms engaging the arms at points intermediate their ends, said tie member being equipped with two pairs of bearing blocks adjustable longitudinally of the tie member, each of the said arms when the parts are assembled extending between the blocks of one such pair, wherebyv the arms may be severally adjusted in their mounting in the carriage.

2. In a wall form for concrete building a carriage adapted to be moved on ways including in its structure two longitudinally extending sill members, a plurality of cantilever structures including each a pair of vertically extending beams arranged on opposite sides of the carriage, a thrust memberinterposed between the pair of beams at their upper ends, and a tie member engaging the beams at intermediate points remote from their upper ends, the tie members of the cantilever structures extending transversely of said sill members and engaging the sill members and forming with them the framework of the carriage, and a pair of mold members borne by the depending lower ends of the pairs of beams of the cantilever structures.

3. The structure of claim 2, the cantilever structures being severally adjustable in assembly s longitudinally of the sill members.-

4. In a wall form for concrete building a framework including two sill members arranged in parallelism and equipped at one end each with two adjustable bearing blocks, a plural ty of cantilever structures including each a pair of vertically extending beams arranged on opposite sides of the carriage, a thrust member interposed between the pair of beams at, their upper ends, and a tie member engaging the beams at intermediate points remote from their upper ends, the tie members of the cantilever structures extending transversely of said sill members, engaging the sill members, and forming with them the framework of the carriage, a'pair of r.

mold members borneby the depending lower ends of the pairs of beams of the cantilever structures two Vertically arranged columns extending between the pairs of bearing blocks with which the sill members at one end are equipped, and l a third mold member borne by the depending lower ends, of the two columns last named.

5. The structure of claim 4 together with wedges arranged between the'bearing blocks of the sill members and the vertically extending columns assembled therewith, whereby the third mold member may be adjusted in its position in the assembly.

6. In a wall form for concrete building, a carriage adapted to be'moved on ways and including in its structure two longitudinally extending sill members and a plurality of members extending transversely tothe sill members, a plurality of pairs of vertically extending beams arranged on opposite sides of the carriage, a thrust memt;

berinterposed between the beams of each pair at their upper ends, the aforesaid transversely extending members engaging the pairs of beams at intermediate points remote from their upper ends and constituting with the said beams and the said thrust members tie members of the cantilever structures, a pair of mold members borne by the depending lower ends of the pairs of beams of the cantilever structure, and means for adjusting the angularity of the vertically extending beams with respect to the thrust members, whereby the space interval between the mold members may be varied. a

- J OHN H. BEAUCHAMP.

JAMES S. MILLER.

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