IES83239Y1 - Method and apparatus for manufacturing pre-fabricated building construction elements - Google Patents
Method and apparatus for manufacturing pre-fabricated building construction elements Download PDFInfo
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- IES83239Y1 IES83239Y1 IE2003/0155A IE20030155A IES83239Y1 IE S83239 Y1 IES83239 Y1 IE S83239Y1 IE 2003/0155 A IE2003/0155 A IE 2003/0155A IE 20030155 A IE20030155 A IE 20030155A IE S83239 Y1 IES83239 Y1 IE S83239Y1
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- 238000009435 building construction Methods 0.000 title claims abstract description 16
- 239000012528 membrane Substances 0.000 claims abstract description 39
- 238000003754 machining Methods 0.000 claims abstract description 10
- 239000011120 plywood Substances 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 7
- 239000011449 brick Substances 0.000 claims description 6
- 238000005304 joining Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 210000000282 Nails Anatomy 0.000 description 22
- 238000009432 framing Methods 0.000 description 6
- YIVWQNVQRXFZJB-UHFFFAOYSA-N o-Succinylbenzoic acid Natural products OC(=O)CCC(=O)C1=CC=CC=C1C(O)=O YIVWQNVQRXFZJB-UHFFFAOYSA-N 0.000 description 6
- 239000003550 marker Substances 0.000 description 5
- 238000010304 firing Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000000295 complement Effects 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
ABSTRACT METHOD AND APPARATUS FOR MANUFACTURING PRE—FABRICATED BUILDING CONSTRUCTION ELEMENTS. The method and apparatus utilizes plant (10) for manufacturing pre—fabricated building construction elements. It comprises a floor joist manufacturing station (100), a sub- component machining station (200), a sub—component assembly station (250), a frame forming station (300), a squaring station (350), an automatic plying station (400) an automatic breather membrane station (500) and a floor panel forming station (600). The plant is used to manufacture construction elements used as floor joists, floor panel units and wall panels (30). [Figure 1]
Description
METHOD AND APPARATUS FOR MANUFACTURING PRE—FABRICATED
BUILDING CONSTRUCTION ELEMENTS.
The present invention relates to a method and apparatus for manufacturing a pre—fabricated
building construction kit of building construction elements.
The present invention provides apparatus for manufacturing pre-fabricated building
construction elements comprising;
a sub—component forming station;
a frame forming station;
a panel wall forming station; and
a breather membrane attachment station.
Advantageously, the sub-component forming station comprises a sub-component
machining station and a sub-component assembly station.
Conveniently, a squaring station is provided between the frame forming station and the
panel wall forming station.
Preferably, the apparatus includes a floor joist manufacturing station which comprises a
plurality of infeed and outfeed rollers for transporting lengths of timber and the completed
joist through the station; apparatus for joining lengths of timber and apparatus for cutting
the joist to the required length.
Conveniently, the floor joist manufacturing station comprises apparatus for forming an
orifice through the joist generally transverse to the longitudinal axis of the floor joist.
Advantageously, the floor joist manufacturing station comprises a scribing apparatus for
marking the location of additional elements used to manufacture a floor assembly.
Preferably, the frame forming station comprises infeed rollers for manufacturing rail
elements of the frame, sawing apparatus for cutting the rails to the required length; nailing
apparatus for nailing studs to rails; clamping means for clamping the frame and frame
elements and means for advancing the frame to the desired distance for the subsequent stud
or other elements to be nailed in position.
Advantageously, the panel wall fonning station comprises:
a clamping means for clamping a completed frame to the apparatus;
a bridge movable relative the apparatus; and
a plurality of nailing apparatus mounted on the bridge for nailing sheets of
plywood to the frame to form a panel.
Conveniently, the breather membrane attachment station comprises:
a clamping means for clamping a completed panel to the apparatus:
a bridge moveable relative to the apparatus;
a means for dispensing a sheet of breather membrane over the panel; and
a plurality of stapling apparatus for stapling the breather membrane to the panel
to secure the breather membrane to the panel.
Preferably, the breather membrane attachment station includes means for marking the outer
surface of the membrane to indicate the correct location for brick ties relative to the
location of studs in the panel.
Advantageously, the manufacturing apparatus includes apparatus for forming floor panels
units, the apparatus comprising:
a clamping means for clamping floor joists to the apparatus;
a bridge movable relative to the apparatus;
a multi—tool forming device mounted on the bridge, the multi—tool forming
device having a plurality of forming heads such as nailing apparatus for nailing
sheets of plywood to the joists to form a floor panel;
a saw for cutting unrequired portions of plywood and a router for forming holes and
crevices in the completed floor panel.
The present invention also provides a method of manufacturing pre-fabricated building
construction elements comprising:
forming floor joists from lengths of timber;
forming floor elements and fixing to the joists to form floor panel units;
forming sub-components of a wall panel;
forming a frame for a wall panel;
installing and fixing the sub-components to the frame;
forming and fixing wall panels to the frame; and
fixing breather membrane to the completed wall panel.
The invention will hereinafter be more particularly described with reference to the
accompanying drawings which, show by way of example only, an embodiment of
apparatus for manufacturing pre-fabricated building construction elements according to the
invention. In the drawings:
Figure 1 is a plan View of the floor layout showing various stations associated with
the method and apparatus of the invention;
Figure la is a more detailed plan view of two stations shown in Figure 1, namely a
sub—component machining station and a sub-component assembly station;
Figure 2 is a plan View of a floor joist manufacturing station;
Figure 3 is a more detailed plan View of two fiirther stations shown in Figure 1,
namely a frame forming station and a squaring station with typical formed panels
being shown in parallel View to the respective manufacturing station;
Figure 4 is a more detailed plan View of two fiirther stations shown in Figure 1,
namely an automatic plying station where plywood sheeting is attached to the
frames and the breather membrane station where a sheet of breather membrane is
attached to the completed wall panel, with typical formed panels being shown in
parallel views to the respective manufacturing station;
Figure 5 is a perspective View of a typical wall panel frame showing the various
components;
Figure 6 is a perspective View of a completed wall panel;
Figure 7 is a perspective View of a corner detail and Figure 7a is a perspective View
of a vent detail;
Figure 8 is a front View of the floor joist manufacturing station;
Figures 9 and 10 are perspective views from above of a router unit and a scribing
unit respectively forming part of the joist manufacturing station;
Figure 11 is a perspective view of the sub-component machining station;
Figures 12 and 13 are two cross~sectional views on the central portion of the
machining station illustrating the operation of the station;
Figure 14 is a perspective view of the frame forming station;
Figures 15 to 18 are a series of side views of the clamping means of the frame
forming section station illustrating the operation of the frame forming station;
Figure 19 is a perspective view of a portion of one side of the station showing the
principal elements of the framing apparatus;
Figure 20 is a further perspective View of the principal elements;
Figure 21 is an enlarged view of the control monitor of the framing station;
Figure 22 is a perspective view from one end of the automatic plying station,
showing a bridge and a plurality of nailing apparatus for securing the plywood
sheets to the frames; and
Figure 23 is perspective view on a larger scale of one of the nailing apparatus
shown in Figure 22.
Figure 24 is perspective View of one of the stapling apparatus provided in the
automatic breather membrane station;
Figure 25 is a perspective view of a further stapling apparatus provided in the
automatic breather membrane station;
Figure 26 is a perspective View of a floor panel forming station which includes a
multi-tool forming head; and
Figure 27 is a perspective view of a forming tool retaining station.
Referring to the drawings, the plant 10 for manufacturing pre-fabricated building
construction elements comprises a floor joist manufacturing station 100, a sub-component
machining station 200, a sub-component assembly station 250, a frame forming station
300, a squaring station 350, an automatic plying station 400 and an automatic breather
membrane station 500 and a floor panel forming station 600.
The floor joist manufacturing station 100 is shown in Figure 2 and in greater detail in
Figure 8. The main items produced in station 100 are elongated floor joists which are
subsequently used to manufacture pre-assembled timber floors in the floor panel forming
station 600. Lengths of timber to be used to manufacture joists are placed on table 105
which includes a number of infeed rollers 106, an infeed drive roller 107 an outfeed drive
roller 108 and a number of out feed rollers 109 for transporting the floor joist through the
station. In order to provide a joist of the required length, it may be necessary to join two
lengths of wood together with clamping press unit 120 which includes two clamps 122 to
hold the lengths secure while nail plate press 124 is activated to join the juxtaposed ends of
the two lengths of timber with bridging plates (not shown) nailed to the ends of timber.
The length of the floor joist is controlled by a monitoring device (not shown) linked back
to control unit 130 having a visual display unit 132 and control buttons 134. When the
control unit 130 determines the required length of floor joist has been achieved, a saw 136
is activated to cut the timber to the required length and cover 140 drops into position
during the cutting operation. Router unit 150 which includes a router 152 (see Figure 9) is
activated by the control unit 130 to provide a hole or slot in the required location which is
used in the completed floor when installed in a house to carry services such as pipework,
electrical cables etc. Also provided in the station 100 is a scribing unit 160 which includes
two pens 162 which mark the floor joists at predetermined locations to indicate where
bridging cross—members are to be located when constructing the floor in the floor panel
forming station 600.
The manufacture of wall panels will now be described. A wall panel 20 generally consists
of a frame 30, a wall of plywood 40 and a layer of breather membrane 50. Typical wall
panels 20 are shown in greater detail in Figures 5 and 6. Wall panel designs vary from
house to house but they generally have a number of common elements.
Referring to Figure 5, the frame 30, which although manufactured in a horizontal
orientation, is installed in a building in a vertical orientation, comprises a plurality of studs
31, cripple studs 32 and jack studs 33 all of which are vertically orientated in the installed
product. The horizontal members comprise a double head plate 34, lintel 35, widow base
plate 36 and cill plate 37. A door opening 38, a window opening 39 and a vent opening 41
are provided in the frame as and if required by the specification for each wall panel. The
frame 20 when completed is covered with sheets of plywood 40, which are secured to the
studs 31, 32 and 33 and head plates and base plates 34 and 36 by nails. Secured to the
plywood sheets 40 by staples is a layer of breather membrane 50. The location of the
vertical studs is indicated by lines 42 which can be formed by the tape or ink along the
membrane 50. The lines 42 indicate the location of the studs to which wall ties are
secured during construction of a house. Comer supports 45 (as shown in Figure 7) are
provided at each internal comer of door opening 38 or window opening 39 prior to the
application of the breather membrane 50.
The manufacture of the sub-components and sub-component assemblies such as cripple
studs 32, window base plates 36 with jack studs 33, vents 41, lintels 35, double head plates
34, etc are all manufactured at the sub-component machining station 200 and sub-
component assembly station 250. The sub-component machining station 200 is shown in
greater detail in Figure 11 and comprises infeed rollers 202, clamping and nailing
apparatus 205 and outfeed rollers for the delivery of the completed sub-components made
from lengths of elongate timbers 206 nailed together. As shown in Figures 12 and 13, the
apparatus 205 comprises four nailing guns 210. Prior to the guns 210 being activated
horizontal clamps 215 and vertical clamps 216 are operated by pneumatic cylinders 220 to
clamp the timbers 206 together. The stud being made with the elongated timbers 206 is a
rectangular shape. However, the components made can be of an irregular shape such as U
shaped or L shaped (not shown). Complementary shaped clamps are then used in place of
clamps 215, 216 which are readily removable. A movable stop plate 222 is provided
adjacent the clamps 215, 216 so as to provide a square edge to the timbers 206.
Depending on the requirements for the finished product, the nail guns 210 can be switched
on or off or can fire alternately.
Some of the sub-components made at the sub—component machining station 200 can be
transferred directly to the frame fonning station 300. Others requiring further work are
transferred to the sub—component assembly station 250, where any horizontal components
such as window base plate 36 are nailed to vertical members such as jack studs 33 by an
operation using a hand held pneumatic gun. Frames for vent openings 41 are also
manufactured at the sub—component assembly station 250. The sub-components
manufactured at the station 250 are then transferred to the frame forming station 300.
As shown in Figure 14, the station 300 comprises infeed rollers 301 for supporting the rails
34, 36 of the frame 30. A sawing apparatus 302 is provided at each side of the station 300
to cut the rails 34, 36 to the required length. Two nail guns 310 each with extended
magazines 312 for nails are provided at each side of the station 300. Two clamps and stud
locators 342 are also provided at each side of the station 300. A control monitor 345 for
use by the operator is mounted on a moving gantry 347.
The clamping, gripping and slide mechanism and its operation is detailed in Figures 15 and
18. The main components are gripper slides 340, clamps 342 and stud locators 343
operable by a pneumatic cylinder 344 and position stop 341.
The control monitor 345 of the frame forming station 300 is shown in greater detail in
Figure 21. The monitor 345 has a touch sensitive screen 346, which includes three
machine control switches 347 for use by the operator. The current panel 348 being
manufactured is shown in the centre of the screen. A series of small screens 349 are
located at the bottom of the screen 345 give details and dimensions of each frame to be
manufactured on the station 300 together with the sizes and lengths of timber to be used for
each frame. Touching any one of the screens 349 enlarges the image of that frame to that
shown in the centre of the screen.
The perspective views shown in Figures 19 and 20 show the main operating components of
the frame forming station 300, namely nail gun 310, nail magazines 312, guide rail 313 for
timber cill plate 36 which is mounted on the machine bed, gripper slide 340, clamp 342
and stud locator 343 which is shown in a retracted position in Figure 19. A multi—function
control switch unit 311 can be used to operate or release the elements as desired by the
operation.
The frame forming station 300 is PLC controlled and CAD-CAM guided. The framing
station 300 includes a total of four horizontal nail guns 310 for nailing the studs. The nail
guns 310 are manually adjustable for studs of different sizes. Rail edge nails are
positioned 20mm in from each rail edge and any remaining nails are equally pitched
between these rail edge nails.
The set-up of the nail guns 310 and gripper slides 320 for different wall heights is
manually adjustable by means of a pneumatic cylinder. The wall panel frame 30 is fed out
from the framing station 300 on a motor driven chain conveyer 320. The gripper slides
340 are integrated, electrically operated, gripper slides for moving and for the exact
positioning of the frame 30 during framing production. The gripper slide 340 moves the
frame to the next nailing position, based on CAD information. The gripper slide 340 has a
stroke of 3000 mm and when the panel is longer the gripper goes back and takes a new grip
on the panel, a vertical-clamping device 342 holds the panel in the correct position during
reverse movement of the gripper. In the framing station there is also a drilling device for
drilling holes for the lift slings in the top rail 34.
The CAD/CAM file feeds the computer with data about nailing positions and center
distance. (The operator can also input and store own data). The operator chooses which
panel to manufacture from a list, or the panels are manufactured according to the
CAD/CAM file. The operator manually places the top and bottom rails into position and
clamps them pneumatically by pushing a button. The operator then manually puts the stud
against the stud stops and starts the next step by pushing the button again and the automatic
nailing cycle starts. The gripper slide 340 moves the frame 20 into the next nailing
position.
On the screen 345, the operator can see what type of component needs to be fed into the
nailing position. Additional studs are manually handled and the sub-components are also
manually handled and located in the current position for nailing.
The buffer or squaring station 350 and plying station 400 include two driven tabletop
chains, one for the in-feed of the panel and one other for the out-feed of the panel. The
station also includes rollers for transport of the building construction elements horizontally
into the nailing station. The squaring station 350 is movable lm in rails on the floor, with
help of cylinders for better working space between the stations. Plywood sheeting 40 is
placed manually and manually fixed to the frame at the edges. This station is also
connected to the PLC because the PLC must know where each element is placed in the
line.
The plying station 400 is equipped with rollers for the transport of the construction element
from the squaring station 350. The plying station 400 is constructed with two driven
tabletop chains for the in- and out feed of the panel. The plying station 400 includes a
fixed side with a stop bar, a movable side which is motor driven for straightening the
construction element and a pneumatic stop for the bottom plate. The movable side is
motor driven to adjust for different wall heights. There is a pneumatically controlled end
stop with pneumatic forwarding of the panel against the stops.
Further details of the automatic plying station 400 are shown in Figures 22 and 23. A wall
panel 30 is laid onto the station 400 and is clamped into position. End sensor 402 is used
to determine the location of the end of panel 30 and is used to control the clamping control
and determine any width adjustment required for each particular job. A movable bridge
410 has four nailing apparatus 420 at one side of the bridge 410 and four nailing apparatus
at the other side of the bridge 410. Each nailing apparatus 420, 430 comprises a nail gun
, a coil nail holder 442, a pneumatic cylinder 443 for raising and lowering the apparatus
420 or 430 and three positioning wheels 445. Electronic control unit 450 at the top of the
bridge 410 controls the movement of the bridge and the operation of the nailing apparatus
410, 430. Conveyor transport chain 460 is used to convey or transfer the panel 30 when
constructed. The nails used to secure the plywood sheets 40 to the frame 20 are loaded
into magazine 442 on a strip 446 which advances through the nail gun 441 as each nail is
fixed into the plywood
The frame 20 is brought towards the stops and is moved by pneumatic cylinders (not
shown), towards fixed stops. The frame 20 is straightened before locking. The station is
prepared for the next stage which is the operation of the nailing bridge
The in- and out-feed of the panel 20 is effected by pressing a pushbutton.
bridge 450 is PLC controlled and CAD-CAM guided. The in and out-feed of the wall
The nailing
panel 20 is effected by driven chain conveyor for the in and out— feed of the panel. A
motor driven movable side bar provides the adjustment in panel width and clamps the
panel square. The nailing bridge includes pneumatically folded end stoppers.
One side of the nailing bridge 410 includes the four nailing apparatus 420 that nail the
OSB board to the studs. The four nailing apparatus move two and two on each wagon
along the stud axis and the horizontal studs. Each tool works in a separate area according
to the distance between the tools, a nailing signal is given from the PLC to each nailing
gun and the distance between the nails is automatically adjusted by information from the
computer. The other side of the nailing bridge 410 is also equipped with the four nailing
apparatus 430 for nailing the OSB board to the top and bottom rails of the frame. These
apparatus are operated whilst the bridge is moving. The nailing bridge station is
CAD/CAM guided. The wall panel is fed against the end stoppers, is straightened and
fixed with a movable side bar. The nailing bridge 410 starts automatically and fastens the
OSB board according to data received from CAD through the guiding computer. If some
of the nail guns 441 run out of nails, the operator is informed by a visual alarm. The
station should then cease operation.
Following the completion of the nailing operation on the plying station 400, the panel 20 is
transferred to the automatic breather station 500 which also is PLC controlled and CAD
connected. The station 500 includes a breather membrane roll 520. The in feed and out-
feed of the wall panel 20 is carried out by tabletop chains.
The stapling guns 510 used in the membrane breather station are shown in Figures 24 and
and comprise a staple cartridge 520, a firing head S22 supported by a gun firing bracket
524 and three positioning wheels 525. Operation of the firing head 522 is controlled by
electronic pulse control 526. Stapling tool 531 in addition to having a staple firing
mechanism has a brick tie marker applicator 5 38.
One side of stapling bridge 530 has one stapling tool 531 for stapling the brick tie marker
and the breather membrane to the studs. The stapling tool moves by servomotor along the
stud. The plastic tape feeds automatically.
The other side of the bridge 530 is equipped with four stapling tools 532 which staple the
breather membrane to the top rail and the bottom rail and for fixing the membrane to
noggings above and below windows. The positions of these four stapling tools are
determined by the servomotor for the stud tool by information from the computer. The
breather membrane roll is located at the end of the station 500 and the breather membrane
is placed out manually and is cut to the required in the length manually. The home
position of the stapling bridge 530 is close to the nailing bridge 450. The wall panels 20
are moved in under the bridge 530. After the breather membrane has been located in
position, the stapling of the membrane to the top and bottom rails of the wall panel,
commences. After the bridge 530 has carried out stapling the membrane, the bridge 530
goes to the first stud position and the single tool 53] starts the fixing of the tie brick marker
and the membrane to the stud. Just before the tool 531 is in home position the plastic tape
will be cut automatically. An alarm is given for empty tools, plastic tape magazine and
the membrane. When there are studs above and below windows opening, the tie brick
marker is fixed over the openings and needs to be trimmed manually. When the bridge
comes to a window or door opening, two tools start the fixing of the membrane to the
noggings.
The completed panels are then transferred from the manufacturing station onto a storage
area for transport.
Referring to Figures 25 and 26, the floor panel forming apparatus 600 comprises a
clamping table 610, a bridge 620 movable on tracks 630 parallel to the table 610. A multi-
tool forming device 640 is movably mounted on the bridge 620. The tools not being used
by the multi-tool forming device 640 are housed in a forming tool retaining station 650
(shown in Figure 26).
Floor joists manufactured on the floor joist manufacturing station 100 are placed on the
clamping table 610, with cross bridging members (not shown) being installed in the desired
locations between the joists. Plywood sheets 660 are placed over the joists and nailed into
position by a nailing gun (not shown) on the multi-tool forming device 640. Any
openings required on the floor are cut out using saw 642 when engaged on the multi-tool
device 640. Any holes and crevices required in the floor are formed by router 644 when
engaged in the multi-tool forming device. An ink jet marker marks the location of the
joists on the upper surface of the panels 660.
The details of the computer control clamping mechanism, the indexing mechanism and the
details of the handling of the floor panels will not be discussed in detail but are similar to
corresponding features in the other stations discussed above.
It is to be understood that the invention is not limited to the specific details described
above which are given by way of example only and that various modifications and
alterations are possible without departing from the scope of the invention as defined in the
appended claims.
Claims (5)
1. Apparatus for manufacturing pre-fabricated building construction elements comprising; a sub-component forming station; a frame forming station; a panel wall forming station; and a breather membrane attachment station.
2. Apparatus for manufacturing pre fabricated building construction elements as claimed in Claim 1, in which the sub-component forming station comprises a sub- component machining station and a sub-component assembly station; optionally in which a squaring station is provided between the frame forming station and the panel wall forming station; optionally including a floor joist manufacturing station which comprises a plurality of infeed and outfeed rollers for transporting lengths of timber and the completed joist through the station; apparatus for joining lengths of timber and apparatus for cutting the joist to the required length; optionally in which the floor joist manufacturing station comprises apparatus for forming an orifice through the joist generally transverse to the longitudinal axis of the floor joist; 15 optionally in which the floor joist manufacturing station comprises a scribing apparatus for marking the location of additional elements used to manufacture a floor assembly; and optionally in which the frame forming station comprises infeed rollers for manufacturing rail elements of the frame, sawing apparatus for cutting the rails to the required length; nailing apparatus for nailing studs to rails; clamping means for clamping the frame and frame elements and means for advancing the frame to the desired distance for the subsequent stud or other elements to be nailed in position.
3. Apparatus for manufacturing pre-fabricated building construction elements as claimed in any one of the preceding claims, in which the panel wall forming station comprises: a clamping means for clamping a completed frame to the apparatus; a bridge movable relative the apparatus; and a plurality of nailing apparatus mounted on the bridge for nailing sheets of plywood to the frame to form a panel; optionally in which the breather membrane attachment station comprises: a clamping means for clamping a completed panel to the apparatus; a bridge moveable relative to the apparatus; a means for dispensing a sheet of breather membrane over the panel; and a plurality of stapling apparatus for stapling the breather membrane to the panel to secure the breather membrane to the panel; 16 optionally in which the breather membrane attachment station includes means for marking the outer surface of the membrane to indicate the correct location for brick ties relative to the location of studs in the panel; and optionally including apparatus for forming floor panels units, the apparatus comprising: a clamping means for clamping floor joists to the apparatus; a bridge movable relative to the apparatus; a multi—tool forming device mounted on the bridge, the multi—tool forming device having a plurality of forming heads such as nailing apparatus for nailing sheets of plywood to the joists to form a floor panel; a saw for cutting unrequired portions of plywood and a router for forming holes and orifices in the completed floor panel.
4. A method of manufacturing pre-fabricated building construction elements comprising : forming floor joists from lengths of timber and fixing panel elements to the joists to form floor panel units; forming sub—components of a wall panel; forming a frame for a wall panel; installing and fixing the sub—components to the frame; forming and fixing wall panels to the frame; and fixing breather membrane to the completed wall panel. 5
5. Apparatus for manufacturing pre-fabricated building construction elements substantially as herein described with reference to and as shown in the accompanying drawings. 10 MACLACHLAN & DONALDSON Applicants’ Agents,
Publications (2)
Publication Number | Publication Date |
---|---|
IES83239Y1 true IES83239Y1 (en) | 2004-01-14 |
IE20030155U1 IE20030155U1 (en) | 2004-01-14 |
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