Plate to support a ceiling mould

A plate of a support structure for a ceiling mold for the production of concrete ceilings, in particular seating plates of a support head with holding means disposed on the plate for a ceiling mold element for gap filling members. A first large protrusion and a second large protrusion are provided in only one corner region of a substantially rectangular plate to hold the ceiling mold element. The first and second large protrusions are wider and higher than a plurality of other smaller protrusions disposed on the upper surface of the plate.

BACKGROUND OF THE INVENTION 
The invention concerns a plate of a supporting structure for a ceiling 
mould for the production of concrete ceilings, in particular on a seating 
plate of a support head, having holding means disposed on the plate for a 
ceiling mould element and for gap-filling members. 
Conventional plates of this kind as e.g. shown in the Peri brochure "Peri 
Skydeck" page 20, serve as head plates for a support for the seating of 
ceiling mould elements. They have, at each of their four corners, two 
mutually parallel plate-shaped tabs bent up out of the plate. The flat 
sides of all tabs are parallel to each other. The flat sides of tabs of 
two neighbouring plate edges lie in a plane. 
The four tabs disposed in the region of the corners serve as holding means 
or stops at which two mutually neighbouring ceiling mould elements can be 
placed and secured to the plate, wherein gap-filling members for example 
edge supports or intermediate beams or fitting beams can be placed on 
surfaces which are not occupied by ceiling mould elements, e.g. two beams 
extending at a separation from each other onto which a section of a 
moulding skin can be nailed whose surface dimensions correspond to the 
size of the gaps. However, gaps are normally present on both sides of the 
plate in a corner of the ceiling mould which must be filled by gap-filling 
members provided therefor. Clearly, one attempts to solve all problems 
occurring in system mould structures, including the filling of residual 
gaps, using pre-fabricated members, support beams or fitting beams or the 
like. For example, at an edge of the ceiling mould, only one ceiling mould 
element can be placed on the so-called edge plate. On one edge of the 
ceiling mould element gap-filling members can be placed as previously on a 
straight section of the wall. In contrast thereto, the tabs formed on 
other edges of the plate serving as holding means for a ceiling mould 
element which must accept and secure the second ceiling mould element 
adjacent to the one ceiling mould element along a straight section of the 
wall interfere with the introduction of gap-filling members. Therefore, it 
is not always possible to introduce the required gap-filling members to 
provide a sufficient seating surface on the edge sections of a corner. 
It is the underlying purpose of the invention to develop a plate which can 
be used as an edge plate which facilitates an improved seating for 
gap-filling members on the edge plate proximate to a ceiling mould 
element. 
SUMMARY OF THE INVENTION 
This purpose is achieved in accordance with the invention in that a first 
large and a second large protrusion are provided as holding means for the 
ceiling mould element in only one corner region of a substantially 
rectangular plate which are wider and higher than a plurality of other 
smaller protrusions disposed on the surface of the plate. 
An advantage of the plate in accordance of the invention is that the large 
protrusions can hold a ceiling mould element even if the edge of the 
ceiling mould element seats in a free manner that is to say does not 
border on a second ceiling mould element with the two mutually adjacent 
ceiling mould elements supporting each other. The other smaller 
protrusions on the plate are configured in such a fashion that they hold 
and secure the gap-filling members such as edge strips and fitting beams 
towards which end these holding means must not, however, be as strong, 
wide or high as the holding means for the ceiling mould element which only 
seats with one corner on the plate. Since the holding means for one corner 
of the ceiling mould element are only disposed in the edge region of the 
plate, the gap-filling members can be subsequently disposed on the two 
edges of the corner of the ceiling mould element without difficulty since, 
in these regions, there is no need for large and strong holding means for 
a neighbouring second ceiling mould element. It is therefore possible with 
the plate in accordance with the invention to place a ceiling mould 
element on the edge of a ceiling mould in such a fashion that a corner of 
the mould skin pointing towards the edge of the wall ends approximately in 
the middle of the plate, wherein the frame legs of the ceiling mould 
element thereby have a sufficient amount of seating surface on the upper 
surface of the plate to assure a secure support of the ceiling mould 
element. In a configuration of this kind with which the corner of the 
ceiling mould element ends approximately in the middle of the plate, there 
is a substantial amount of room on both sides of the edges of the ceiling 
mould element forming the corner which is available for placement of the 
gap-filling members. A support plate in accordance with the invention has 
a enlarged seating surface for the gap-filling members while maintaining 
the outer dimensions of conventional edge plates, since the large 
protrusions formed on the seating plate are only disposed in one corner 
region of the seating plate. 
In accordance with the invention, the plate is therefore provided with 
protrusions forming projections disposed asymmetrically on the plate with 
regard to their differing dimensions (width, height). In one portion 
(surface section) of the plate, large projections are formed to guarantee 
secure connection (with respect to rotation and tilting) to a ceiling 
mould element even under differing loads. In other portions of the surface 
of the plate, small projections are formed which can fix and hold 
gap-filling members on the plate on both sides of a corner of the ceiling 
mould element. In this fashion, the plate in accordance with the invention 
can be equipped with more gap-filling members than can conventional plates 
of comparable size. The large projections, preferentially two projections, 
are solely disposed in one portion of the plate, preferentially in a 
corner region of the plate. 
In an embodiment of the invention, the large projections are disposed in 
such a fashion that they engage the inner surfaces of the mutually 
perpendicular frame legs of the ceiling mould element disposed at each 
corner of the ceiling mould elements, when the ceiling mould element is 
placed with its corner on the edge of the plate having the large 
protrusions, these inner surfaces extending perpendicular to the plane of 
a mould skin of the ceiling mould element. The protrusions can be 
configured in an arbitrary fashion, e.g. in a form of pins or the like. In 
one embodiment of the invention these protrusions are plate-like and could 
be tongues bent up out of the plate material. 
It is thereby advantageous if, in one embodiment of the invention, the flat 
sides of the large plate-like protrusions intersect at right angles so 
that the protrusions seat on a large area of both frame legs forming the 
edge of the ceiling mould element. In this manner an unintentional 
lifting-up of the ceiling mould element from the plate is also prevented 
when the ceiling mould element is temporarily placed, during assembly of 
the ceiling mould, on the plate not parallel to the plane of the plate at 
an angle slanting in the upward or downward direction. 
The dimensions and, in particular, the dimensional relationships between 
the large protrusions and the small ones which substantially only serve to 
hold the gap-filling members can be arbitrarily chosen taking into 
consideration the particular application for the plates. In one embodiment 
of the invention the large protrusions are approximately three times the 
width of the other small protrusions and can also be approximately one and 
one half times the height of the smaller protrusions. As mentioned, the 
small protrusions serve as holding means for the gap-filling members 
positioned on the plate. 
These small protrusions, which can be formed, as can the large protrusions, 
as tabs bent up out of the plate are, in one embodiment, disposed in a row 
behind each other, wherein they can additionally be configured such that 
the flat sides of all of the small plate-like protrusions lie in a row in 
one plane. This is very advantageous for attaching edge supports having a 
groove on their lower side into which the small protrusions can engage. 
However, this orientation of the plate-shaped protrusions is also 
advantageous when the small protrusions solely engage on the side surfaces 
of the gap-filling members. 
The separation between two neighbouring rows of small protrusions is 
arbitrary. However, double rows having differing separations between the 
rows can be provided for on the plate. For example, the separation between 
the rows of a double row can be twice that or three times that of the 
separation of another double row provided for on the plate. The 
configuration can thereby be chosen in such a fashion that the separation 
of one row from another located on one side is different than a separation 
with respect to one neighbouring the other side. 
Finally, the invention should not be limited to holding means configured 
only as protrusions. For corresponding configuration of the gap-filling 
members, protrusions on the gap-filling members can also engage into 
openings in the seating plate to replace the small protrusions. In 
addition, openings are also provided for in the seating plate into which 
bolts for the gap filling members can also engage. In this manner, the gap 
filling members can be more securely fixed to the seating plate. 
Additional features of the invention can be extracted from the subsequent 
description of an embodiment of the invention in connection with the 
claims and the drawing. The individual features can be utilized 
individually or collectively in embodiments of the invention in arbitrary 
combination.

DESCRIPTION OF THE PREFERRED EMBODIMENT 
In the embodiment of the invention shown in the drawing, a support 
structure (not shown in the figure) is provided for on the lower side of a 
plate 1 which extends into a longitudinal member with which it can be 
attached to the upper end of a hollow support. The plate 1 has circular 
openings 2 to reduce its weight, edge cut-outs 3 and two central cut-outs 
4. Tabs 6 and 7 are bent up from the plate 1 at the left edge 5 thereof as 
shown in FIG. 1 to extend in the upward direction perpendicular to the 
surface of the plate. A tab 9 is, similar to the tabs 6 and 7, bent up at 
the right edge 8 as shown in FIG. 1. The tab 9 is parallel to tab 6. The 
tabs 10 and 11 are bent up from the edges of cut-out 4 in the row defined 
by the tabs 6 and 9 and are likewise parallel to the tabs 6 and 9. Tabs 13 
and 14 are bent up parallel to tab 7 on the edges of the other central 
cut-out 14. On the lower edge of the plate 1 as shown in FIG. 1, tabs 15 
and 23 are bent upwardly from the edge of the edge cut-out 3 which are 
parallel to each other and have the same size as the above mentioned tabs 
6, 7, 9 through 11, 13 and 14. Platelike protrusions 17 and 18 are 
disposed on the plate parallel to and within the row formed by the tabs 6, 
10, 11 and 9 which are either welded to the upper surface of the plate or 
are formed by upwardly protruding portions of the lower construction 
penetrating through slots in the plate 1. These protrusions 17 and 18 have 
the same size as the other tabs in this row. A plate-like protrusion 44 is 
located in the row formed by tabs 7, 13 and 14 and plate-like protrusion 
19 is disposed on the plate 1 in the row defined by the tabs 23 and 15. 
Plate-like protrusions 20 and 21 are disposed at the upper edge as shown 
in FIG. 1. The tabs and protrusions mentioned up to this point all 
constitute holding means to hold and attach gap-filling members. The tabs 
6 and 7 form a vertical row 45 in FIG. 1, wherein the flat portions of the 
tabs 6 and 7 lie in a plane. The protrusions 20, 17, 44 and 19 form a 
vertical row 22, wherein the flat portions of these protrusions also lie 
in a common plane. The upwardly bent tabs 10, 13 and 23 form a vertical 
row 24, the tabs 11, 14 and 15 a row 25 and the protrusions 21 and 18 a 
row 26. The above mentioned tabs and protrusions protrude with 
approximately the same areal dimensions from the upper surface of the 
plate 1. 
The first large protrusion 28 is bent in the upward direction in the region 
of an edge cut-out 27 and is higher and wider than the above mentioned 
tabs and protrusions. A second large protrusion 29 extends upwardly from 
the lower edge shown in FIG. 1. This protrusion 29 extends approximately 
one and a half to two times more above the upper surface of the plate than 
the small tabs and is approximately three to five times as wide as the 
above mentioned tabs and protrusions. The upwardly bent first large 
protrusion 28 likewise protrudes approximately by one and a half to two 
times that of the small tabs and protrusions above the upper surface of 
the plate in the upward direction; it is approximately three to four times 
as wide as the above mentioned tabs. The flat portions of the protrusions 
29 and the protrusions 28 are at right angles to each other. The 
protrusion 29 does not extend completely up to the point of intersection 
with the plane of the protrusion 28. The protrusion 29 can, in embodiments 
of the invention, also be the upper section of a strip of the lower 
construction which is guided through a slot in a plate 1 in the upward 
direction and projects beyond the upper surface of the plate. 
A ceiling mould element 37 of a ceiling mould has a frame made from four 
frame legs, two of which 30 and 31 are shown in FIG. 2, onto which a mould 
skin 32 is attached. The edges of the mold skin 33 and 34, in the 
embodiment shown in FIG. 2, protrude sidewardly beyond the frame of the 
ceiling mould element 37. The ceiling mould element 37 is placed on the 
plate 1 in such a manner that the inner surfaces 35 of the frame leg 31 
which are at right angles to the mould skin 32 seat on the inner surface 
of the protrusion 29. The outer surface 36 of the frame leg 31, which 
likewise extends at right angles to the plane of the mould skin 32, then 
seats on the tabs 14 and 15 so that the frame leg 31 is held between the 
tabs 14 and 15, serving as protrusions, and the protrusion 29. The inner 
surface 38 of the frame leg 30 extending at right angles to the plane of 
the mould skin 32 seats on the inner surface of the large protrusion 28. 
The protrusions 14, 15 and 29 prevent a displacement of the ceiling mould 
element 37 at right angles to the frame leg 31 and the large protrusion 28 
prevents a displacement of the ceiling mould element 37 of FIG. 2 in a 
downward direction. A displacement of the ceiling mould element 37 in FIG. 
2 in the upward direction is prevented in that a fitting beam 39 is 
inserted between the sideward ends of the tabs and protrusions 11, 18 and 
9 and either the edge 33 of the mould skin 32 or the outer surface 40 of 
the frame leg 30. This fitting beam 39 and an additional fitting beam 41 
subsequently inserted on the plate 1 at the tabs 21, support a section of 
a plate section made of wood or from a material of the mould skin which is 
subsequently placed on the edge 33 onto the fitting beams 39 and 41 to 
extend up to the edge which the complete concrete ceiling should reach. 
This section of the mould skin therefore bridges the residual opening gap 
portion which is not easily covered by the system mould. 
The ends of two fitting beams 42 and 43 can also be placed on the plate 1 
in the space located in FIG. 2 at the left of frame leg 31 of the ceiling 
mould element 37 to support a section of the ceiling skin which bridges 
the intermediate space between the edge 34 of the mould skin 32 and the 
edge of the completed concrete ceiling. 
The plate in accordance with the invention is therefore capable, with the 
assistance of conventional gap filling members, of bridging large gaps 
between the mutually perpendicular edges of a ceiling mould element and 
the end or edge or the end sided mould for a concrete ceiling. The edge of 
a ceiling element 37 is thereby firmly secured to the edge of the plate 1 
and there is sufficient room on the plate 1 to still dispose two fitting 
beams at separations from each other on both edges of the ceiling mould 
element 37 upon which a plate, preferentially made from the same material 
as the mould skin 32, can then be securely fastened to bridge the gap 
between the edge of a system mould and the edge of a concrete ceiling. 
The separation between the rows 45, 22, 24, 25, 26 as well as the 
separation between the row 26 and the edge 8 can be chosen in accordance 
with the reigning circumstances. For example, the separation between the 
edges 22 and 24 can be of the same size as the separation between the rows 
25 and 26. The separation between the rows 45 and 22 can be two or three 
times as large as the separation between the rows 25 and 26 and the 
separation between the rows 24 and 25 can be three to four times as large 
as the separation between the rows 25 and 26. The tabs and the protrusions 
all have the same thickness, whereas the large protrusions 28 and 29 are 
higher and wider than the smaller protrusions and tabs. 
The invention concerns a plate 1 of a support structure for a ceiling mould 
for the production of concrete ceilings, in particular seating plates of a 
support head with holding means disposed on the plate 1 for a ceiling 
mould element and for gap filling members. The invention consists 
essentially therein that a first large 28 and a second large 29 protrusion 
are provided in only one corner region of a substantially rectangular 
plate 1 to hold the ceiling mould element 37 which are wider and higher 
than a plurality of other smaller protrusions 6, 7 etc. disposed on the 
upper surface of the plate.