AU2004200147A1 - Tubular Steel Dowel - Google Patents

Description

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Patents of Additions.DTI I ,5 crew.

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Tubular Steel Dowel Patent No. 708114.

Application No. 37786/95 Inventor Reginald Claude Wilmott. address unit 3/55 Muir St. Mt. Waverley Melbourne Victoria 3149. Phone (03)98035573.

Transfer of ownership to son Leigh. William. Wilmott. Canberra address S No.7 Moor Place Evatt Canberra 2617 ACT. Mobil Phone No 0438528433. My Son Leigh has moved to live in Melbourne. He will advise you of his new address so until then use my address above. I will forward his mail onto him.

Tubular Steel Dowel patent of additions to a 1 0 multifunctional tubular steel dowel of many usages, its many concepts lead back. To the original parent patent form of a timber jointing tubular steel dowel.

Improvements in its design to facilitate, its multitude of usages brought about by its redesigned. Steel splined ends at each end of (1) 1 6 tube ends. Internal bolts encased inside its tube section, to create a tubular steel dowel for use in concrete form work, as a masonry anchor into, brickwork or concrete.

For joining of timber boards being clamp together with a steel axle shaft. One end threaded to locate into dowel end threaded nut 0 insert. Its opposite end a nail pointed shaft end. A tapered slide spreader.

Zay that slides along this shaft, with the clamp)ing together of the boards being joined together embedding the shaft nail or pinpoint deeper in to the boards. Forcing the steel slide spreader, to spread the steel end splines. To act as gang nails spreading the steel spline fingers. Deeper into the dril-led core hole of the boards being clamped together.

C A single timber metal threaded through bolt encased with in its internally partially metal threaded tube end. The counter sunk head of this through bolt is rotated with Allen key with in the inner metal threads of the dowel end of It's opposite timber-threaded end on reaching the end of its timber-threaded end, holds in the metal end threads of the tube.

o0 Having spread the steel tube end splines of a plug is inserted to cover the open end of the exposed core hole.

The tubular steel dowel with both of its ends having steel splined fingers. With threaded manufactured (nut inserts) that suit the internal diameter of the tubular steel dowel at both of its ends, these threaded nut inserts are welded to both ends of tubular steel dowel (l).This allows it to be used as a concrete spacer, between the steel formwork. Both of the steel shutters to contain concrete have threaded bolts inserted into the nut inserts of both ends of tubular steel dowel ends. Both of the steel shutters are then clamped together, with these threaded steel through shutter bolts.

These steel shutter bolt holes, is a perfect match in there set out.

Top bottom of the steel shutters with a matching set out allow the steel shutters to be raised in height, for another pouring of concrete, the bottom holes in the steel shutters are secured into the previous, tubular steel dowels. That are now set firmly into the previous tubular steel dowels, that 5 are now firmly held in the previously poured concrete.

This process of pour then raise, the steel shutter with a winch are repeated again again, until the height of the reinforced concrete wall is obtained.

Scaffolding is attach to the steel shutter sides, so it is raised along with the concrete steel shutters,, on each concrete pour that the steel concrete shutters are raised.

The splined steel fingers of lock into the set concrete the steel shutter through bolt threaded into the nut inserts of prevent the entry of concrete into the inside of the concrete tubular steel dowel A steel tube of slightly larger diameter, fits over the outside diameter of the tubular steel 36 dowel. Allowing for its removal from its larger diameter shield tube for reuse if this method of reuse is adopted.

The concrete formwork drawings show the clamping of form work shutters, to the tubular steel dowels using the concrete wall, being formed with each raised pouring of concrete. This reinforced concrete wall supports these steel shutters its side scaffolding, as the reinforced 6 concrete wall increases in height. The tubular steel dowel because of there bolt on into its threaded nut inserts. Save on the costly formwork erection times, a very big plus over other methods of concrete formwork. Not using the tubular steel dowel with threaded nut inserts in each of its ends, in which to thread steel bolts. That clamps the steel shutters against S previously poured concrete.

Addition improvements are as follows.

End of steel tubes, both with steel splines cut into the ends of the steel tube body. That are spread to form gang nails. Internal threaded nut inserts mig welded at both of the tube ends.

S Tube with end steel splines internally threaded at its open end. With a specially machined steel through bolt, with a wood screw threading at its insertion end. A metal threaded section at the through bolts, tapered counter sunk head.

Steel slide shaft one end threaded the other with a sharp penetration point.

For penetrating timber boards being clamped together, in timber core holes of all timber boards, being clamped together.

On which a steel tapered slide spreader travels along. It does away with board timber face inspection openings, for inserting of Allen key to rotate, a counter sunk head bolt.

Tubular steel dowel with steel splined ends threaded nut inserts mig welded to tubular steel dowel ends, as these tubular steel dowels are positioned with in a set out plan to receive clamping shutter through bolts.

That lock into them to support, steel concrete formwork shutters. As these shutters along with its integral attach scaffold. Are raised into position to be held in place, with tubular steel dowels. That are set into the concrete wall being formed.

IY Uly 6 e Pow Patent of Addition for Tubular steel Doweli No 7 08114.

This improvement of addition in a better design for the Tubular Steel Dowel, it allows for many more applications of use. The ends of the tube now have at both of its ends angle cuts to form four tapered steel fingers the length of these steel fingers is determined by the end diamneter of the tube, being used to form these gang nail type fingers. Which are spread internally by adjustin of threaded steel bolts, which are located at bohthe tube ends.

It differs from the previous Tubular Steel Dowel, it doe's not rely upon the use of internal wood screw internal of the tube, in which it is tuned to engage with the tinter member. Thus securing this end of the Tubular Steel Tube, is held to this member, its other end towards the outside timber member was held by a steel bolt located into treaded nut housed with in this outer tube end.

The new drawings show in great detail how these internal bolts with a tapered bolt head to spread these gang nail type steel fingers to locate them selves into the timber core holes into which the Tubular Steel Dowel is inserted. The tube ends when spread by the bolt adjusters embedded into the core holes of both timnber members replace the need of a wood screw and external clamnping bolt. The previous method of holding tinter members together, the external clamping bolt can still be used, when a through tinter core hole is in ZO use. When drilled trough the external timber member to clamp spread the steel tube end gang nail typ fingers.

This modified design will enhance a more universal appeal towards the useage of the Tubular Steel Dowel, be cause it's mod ifj design allows for much greater useage thus making it more commiercially acceptable.

Patent of addition.

To Parent Patent No. 708114.

Tubular steel dowel.

Steel finger splines to both ends of the tubular steel dowel.

As the adjuster bolts are threaded through nut inserts to engage with the spreading Of end steel finger end splines. The advantages of these steel end tube. splines. of Create the holding effects, brought about having the split steel fingers of tubular steel dowel tube body Expanding into a timber core hole. By the threaded steel bolt pressure of depending on pressure applied by steel bolt To the extent of end tube spline spreading that is required, in its varying applications. Its these unique finger steel splines of the tubular steel dowel body ends. With the pulling spreading of boll with its tapered head, threading through nut inserts metal threading that has the same steel bolt threading to spread hold these tube end body splines. By the combination of spreadable steel tube end splines, by the pressure of its spreading taper head boll the fine threading of nut insert To be the reason that all the multiple drawings, all show its many varied applications, that come about by the splitting into steel spline fingers. Of figures show in these many drawings, that the tubular steel dowel, having steel finger splines at both ends of its body tube bring about.

Patent of Addition drawings.

In the drawings.

Figure 1.

Shows all of the 6 comp3onents located with in the tube of the Tubular Steel Dowel. In the insertion mode in readiness for insertion into the drilled core hole.

Figure. 2.

Is the same as figure 1. The difference being thiat the end of steel te steel tube fingers are expande into their internal lock up position with in Co the timber core it ishoused with in.

Figure. 3.

Shows just the basic tube from which the tubular steel dowel is formed.

Figure. 4.

I S It is the fitting to insert into both the tube ends. Where a special expansion tube tool expands agast the internal end walls of the tubular steel dowel. This method is only satisfactory for small diameter sized tubular steel dowels. The same method can not apply to larer sized tubular steel dowels with a greater diameter, they would require silver soldering or spot welding.

ko To the same fittings to meet the requirements of Australian standards.

Figure. Adjustable tube, end bolts with tapered threaded nuts. One has the tpred end nut lock up to its metal thead as it is turnin and anti clockwise direction other wise it would be threaded off the bolt end. They are both threaded into 3 at both ends of the tubular steel dowel.

Figure. 6.

Is a method of mianufacture for smaller sized dowels as would be in use in the furniture &joinery trades. It's the shape from a metal stamp press, it shows location slots. At both its ends to receive 8 a nut with 3 side Continued.

Figure. 6.

lugs to fit into the slots of 6, it' finction is the same as 3 in the tubular steel dowel. The T shaped cut out is insertion opening if I0 required to use wood screws. Steel end splines as insertion barbs for securing in tinter core by hammer in the same way as nailing.

Figure. 7.

Shows 6 roiled into a tube.

Fiue.8 Conventual dowel joint with tubular steel dowel 1 located into horizontal timber member vertical member. The timber core hole is a through hole from the vertical member into the horizontal member. The open member is capped with a plastic inserted plug 9.

Figure. 9.

ao Shows conventional dowel joint with steel dowel in reverse no through core hole. A concealed dowel with a side core hole for insertion of altum key 5 inserted into 4 rotating clockwise tapered spline of 4 is spreading steel gang nail typ fingers into core hole. The other end of 1 is adjusted anti clockwise to spd steel type fingers into its timber core hole.

Figure. Shows jointing of compressed board or jointing of timnber sections together to form a wider width board- Figure. 11.

Shows the use of tubular steel dowel. Used in place of a mortice tenon joint, no nmachining required just drilled core holes in the timber members to receive tubular steel dowel 1.

Left-band side has a through core hole into both tiber miembers end of core hole is covered with a plastic cover cap 9. Right hand side shows concealed dowel 1 end with no through core hole to external 5turnsadjusting bolt 4to spread end of tube steel fingers of 1 into core hole.

Figure. 12.

Shows timber members joined together with to form a workbencl- Figure. 13.

Is a post with spaced tubular steel dowels on alternate sides of the post. For fastening of timber members to support display shelving or warehouse shelf storage temporally or permanent. It has multiple spacings to suit under over timber support members similar to bearers joists .Tubular steel dowel with insert nuts iserted into timber posts, aliows for rapid erection dismantlement of it's components.

Figure. 14.

Has the same application as figure (13) to be used in conjunction with it as a spacing support. Many of these posts could be in use to build various projects.

Figure. Shows a side on view of both posts, in a typical function application- Figure. 16.

C OA, LAJ The use of tubular steel dowel for securing of step stringers treads. With supporting steel brackets (10) supported on through bolt Figure. (17).

Angle view of steps showing Mul width of treds two securing dowels for each tread support.

S Figure. 18.

Small steel support brackets supported on stringer through bolts locked into to give extra strength to treads by the slight weakening of timber treads by the drilling of core holes to house Being cold butted no checking in of treads into stringers, they give the sane support to treads not e0 check into tread stringers. Also the fulfl thickness of step stingers is not weekend by these stringer check outs to house the tread ends into, no check ins prevents timber rot from developing in the stringer check outs.

Figure. 19.

Normal fatstening of timber members with tubular steel dowel (1) with athrough bolt Figure. Window sun. screen with cross members angled, to suit sun shading then locked up permantly.

Figure. 21. 0 odnwvec4.

Manually operated adjustment of cross-timber shade members, the fixed member cross section has half of the dowel fixed permanently in it. The other end of revolves with in the main support member through bolt clamps a spring steel washer up against the splayed end of(1) which revolves on a steel washer, abutted against main support timber member. This is only a method of finding, the most advantageous angles to the sun of the shading cross members for the maximum shading of windows.

Figure. 22.

Shows a different method ofjoining together two timber members by removing from the tubular steel dowel adjusting bolts This method of fastening is similar to riveting by applying of pressure on the gang nail type splined ends of the tubular steel dowels With the engagement of hand operated threaded T handle (11) threaded into internal nuts from both ends collapsing the splined ends of tubular steel dowel against both of the timber members being fastened together.

Figure. 23.

Its just the back view of previous figure (22).

Figure. 24.

Shows the method of clamping both splined ends of(l) until the 0 splined ends are fully collapsed crushed against the timber member by the pressure applied by, the hand operated T handles of (11).

Figure. Is a method ofjoining together panel boards, the bottom cleating board is riveted by the spreading of the end splines of The two board sections being joined together at the top are held with the pressure of tapered if anti clock rotated bolt spreading of the splined ends of below the top surfaice of the boards being joined together band tool (11) compresses (1) splined steel fingers against under side fixing cleat.

Figure. 26.

The centre section is a composite board it acts as a clamping e board, having spaced at numerous intervals tubular steel dowels with the same fixing as already explained in figure 24. There is no need for the internal adjuster bolts operated internally of The steel splined ends of are fastened by the use of T bar (11) as illustrated in figure 24.

The tubular steel dowel changes its character to that of a rivet with ISinternal threaded nuts That are engaged with counter sunk metal thread screws, to fasten such sheetings as required such as insulation sheets of plastics or sound absorption sheet materials etc.

Figure. 27).

The tubular steel dowel is used as a spacer between composite boards or boxing materials used in concrete fbrwodc. it can also form internal division walls etc. The steel splayed ends of are slightly spread to match the counter sunk heads of metal threaded bolts to dovetail these steel splines of ends against the counter sunk holes drilled in readiness for their fisertion.

Figure. 28.

F;ure. M3 Is apost &rail fence as would be in use around council parks seaside walks etc. Its advantage is no steel brackets no angle nailing weather protected concealed in the timber post rail members TIhe core holes are drilled through fence post at the ground &11 angle. TIhe rail core holes are drilled to a depth to suit the protruding section of past the post on either side. The adjustment the spreading of the end steel splines of internally of the fence rails is done by alumn key trough the opposite end of until the steel splines of are embed into the core holes anchoring them firmly in place a metal two pack glue over it's ICsurface area. When the next rail is push into place on the section protruding past the post The alum key adjusts to spread end steel splines of the alum key is rotated through the under side of the rail being secured from. with in it's core hole. Where it locates into the hexagonal bolt end of the core hole has plastic cover inserted into its core hole.

Figure. 29.

Shows wire cut clay brick with core holes for mortar to locate into as a holding medium A brick frog These typ of bricks along with terra cotta bricks because of their of their internal core stucture are difficult to get ao to hold in various masonry anchors. Because the tubula steel dowel (1) passes through a wire cut brick to it's opposite side it has the advantage of spreading its steel splines against this brick surttce of the wire cut brick- T1he other end the open end front of the brick, the splines of are spread with hand held T tapered tool (11) to locate them selves, against the drilled core at the front of the wire curt brick. The splines of at the fr-ont of the wire cut brick centre resist the pressure applied by the bolt securing atimber member to a brick wall.

The opposite end of at the back of the wire cut brick firms it self against the pull of the fastening steel bolt, as it resists with the spread of it's end steel splines of protruding either side of it's core hole in the wire cut brick.

Figure o h y v e It's a typical brick veneer dwelling brick external wall, with the intema timber framed wall a cavity between plaster sheeting to the inside of the timber framed wall.

The timber member is shown fastened by two steel bolts that are located lock up against the brick veneer wall. As they fasten them selves into the threaded internal nut of The tubular steel dowel would have to conform to Australian standards for its adaptation as a masonry component for hollow core bricks such as. Wire cut clay bricks terra cotta bricks.

Figure. 3 1.

Its the same as. Figure 14 only more discriptive with the enlargement of 1. Tubular steel dowel insertion into a support post for s shelving storage of merchandice.

S Figure. 32.

Jointing of chair timber sections with tubular steel dowel.

Figure. 33.

.Rear view of chair.

Figure. 34.

Q Section at chair leg rails, shows conceiled dowel joint.

Figure. Work bench as in figure 12 with angled boards being joined &fastened to work bench fr-ame.

Figure. 36.

is£ Shows boards being clamped together with insertion hole of boards with under side section of boards fatcing upwards. Allen key insertion alter boards have been clamped together. Beibre removal of sash cramps, to spread steel fingers of 1 tubular steel dowel to lock up boards for removal from sash crams.

Figure. 37.

R-0 Shows 1 protruding in readiness for next boards insertion of 1 with under face surface of board being upwards. Insertion hole Allen key rotation is the method of spreading steel finger splines in timber core hole of boards.

Figure. 38.

doels.Large size framed timbers for gate using, larger sized tubular steel Fibure. 39.

~Pannel boards of gate, held with stubby length 1 tubular steel dowels Figure. shows counter sunk head metal thread small size bolts securing pannel boards to rail of gate.

Figure. 41.

Window fr-ame butt jointed with tubular steel dowel 1. Joining window frame members together.

Figure. 42.

Mitre picture fr-ame joined with small sized tubular steel dowel 1 with counter sunk head steel bolts used to spread steel splines of 1.

Figure.43. 44. 45. 46. 47. 48. Are contained in the drawings of Pointed steel slide pin with steel travelling, steel spline spreader. A copy is included in these drawings.

Prelude only for the using of tubular steel dowel for concrete form work in conjunction with steel shutters, designed expressly for. Tubular steel dowel use in concrete form work only.

Concrete form work steel shutters boxing to contain concrete being poured until it is set. Specifically designed concrete boxing technic to fliscilitate. Threaded to0 steel holding bolts as anchors utilizing threaded nut inserts at each end of tubular steel dowel. To hold steel shutters in place until release raised by cable from a winch with bottom bolt holes of steel shutter relocating into previous top holes of shutter, after each pour of concrete. This process is repeated until niaximend wall height is obtained.

Figure. 49.

Shows tubular steel dowel 1 tube body, with both ends with steel spines internal threaded nut inserts.

Figure. Is just ordinary steel bolt with a hexagonal head used. As insertion bolt. to clamp both steel shutters into threaded insert of tubular steel dowel 1.

Figure. 5 1.

Is just a steel tube that slides over tubular steel body 1. To prevent 1 from being set in concrete, its only purpose is to make for the removal of 1 so that it can be reused. To save on the cost replacement of 1.

Figure. 52.

Shows 1 being removed from steel tube for reuse.

Figure. 53.

Steel shutters in readiness for a concrete pour, located into H section o0 steel channels. That form slide channels for steel shutters, as they are raised in height by cable winch. Fabric steel reinforcement is centre between steel shutters.

Set out pattern of 1 spacings show steel shutter bolts threaded into 1 nut inserts, clamping both steel shutters to tubular steel dowel end threaded nut inserts.

Figure. 54.

IS. Steel shutter with steel cables bolt holes drilled through steel channel (acting as a whaler construction term for the use of strengthening steel faice plate with a channel steel section welded to its back faice.

Figure. Cross section drawing second raising of steel shutters. With integral zo steel scaffold welded to form steel shutters scaffold. Winch opperated cable to Pulley work head shroud steel cables bracing attached to work head. Then secured with a steel bolts to concrete floor.

Figure. 56.

Shows steel ladder secured to concrete wall joined in segments as steel slide shutters. Are raised for each pour that increases the concrete wall height, giving access to the scaffold a safe platformn in which to place concrete inside the steel shutters. A Figure. 57.

Cross section drawing shows. Steel shutters located with in sliding steel shutters H channels, steel fiabric reinforcement. Steel angle stays secured to if concrete wall, by steel bolts located into threaded nut inserts of 1. Steel ladder top held in place to steel scaffold steel bracket bolted to 1.

Figure. 58.

Shows cross section drawing of first pour of concrete. The steel scaffold acts as a braceing being secured by masonry anchors, into concrete floor 1 0 made level by adjustable &abricated steel threaded bolts, welded to a steel base plate. positioned into a straight wall line secured in place H channel steel end sections. As they are butted together top to bottom of each other boiled together sections are removed on conpietion of concrete wall.

Fignire. 59.

f 5' Steel plate section of scaffold floor. With cut out sections to allow the use of a spanner, to fhtsten on to. So that steel shutter bolts can be tightened or removed.

Figure. Steel plate that threaded bolt welds to, for level adjustments. Top hole for anchor bolt to pass through into concrete floor.

ZO Figure. 61.

Shows concrete floor with adjuster plate anchored to it threaded bolt. With under over adjustable steel nuts for securing to scaffold steel floor.

Figure. 62.

Shows Slide shutter in two sections held in place by H channel steel, support to steel shutter guides. With work head winch cable above attached to shutter cable to lift steel shutter when required.

Figure. 63.

Work head with two j emmny wheels or pulleys, for vertical raising of steel shutters. Steel angle support bars, bolted to H channel top sections for lateral braceing.

Figure. 64.

Steel shutters located between H channel steel slide members. With I 0 steel ball bearings spacers at each of there ends. To give the correct slide tolerances, during the spacing set out of H channel steel sections steel shutters.

As the steel shutters are raised, the steel ball bearings will rotate to the bottom of the shutters. Where they can, be retreaved for furture usage.

Figure. Steel shutters arranged in wall sections, ground plan set out. With external internal 90 degree mitre shutter returns. Adjustable corner shutter s held with in H channel steel slide coluns.

Figure. 66.

External adjustable corner angles.

Figure. 67.

Internal adjustable mitre return angle.

Figure. 68.

Clip on steel fiace plate for extention of angle. returns back to main standard steel shutter set out.

figure. 69.

Straight line adjustable steel shutters for external run by of internal mitre returns.

Figure. Method ofjoining together two H sections of channel steel shutter slide guides. Gusset piece of steel welded to joining H channel steel as in figure 71 with steel bow trust bolted to both top bottom sections of H channel steel slide guides. Eliptical bow trust two for either side H channel steel slide column light weight bow trusts. Bolted into threaded flange holes of steel shutters, lock up release T bars. Timber wedges used to lock in steel shutters against H channel steel slide columns. Until concrete is poured set. Wedges are displaced, steel Is bow trusts when released, normal pattern of raising steel shutters. Until another jointing of H columns is required, Steel bow trust assists by preventing lateral bulging when a concrete pour is in progess.

Figure.71.

zo View is of both flange sections of H channel steel bow trusts steel holding bolts shaded section represents concrete that has been poured.

Figure.72.

Jointing of H channel steel with welded steel gusset plate to top bottom section of H channel steel column.

Figure.73.

EXpansion joint between a long wall section. Opperation a steel round bar fitted inside a steel tube, witha spot welded end steel cups that fit to each end.

One end is set in concrete, The opposite end fits up against a pliable rubber expander. Steel tube is in two sections finishing at the centre, expansion rubber solid steel round bar abutts against rubber buffer, at its ends. Polyuathene spacer is removed after setting of concrete. Finish is a normal expansion joint of a round core insert of polyurathene with silicon caulking between it, the expansion gap between the concrete wall.

Figure. 74.

Steel end cap that fits over end diameters of expansion steel tubes at each end.

Figure. Round jointing steel bar, that takes the place of reinforcement steel I s fabric. Spaced at approximatley every metre in height of the concrete wall, to give it jointing stability.Inside the expansion steel tubes that are set in concrete rubber inserts absorb the concrete wall expansion both ways between its expansion joints.

Figure.76.

Pliable expansion rubber with a steel round bar, core hole at its centre.

Thickness of rubber is determined by width of expansion joint, the gap between the seperated walls.

Figure. 77.

Shows the lock in of concrete into the steel spline fingers of 1 in both ends of the tubular steel dowel preventing its rotating in the concrete.

with the through shutter bolt, located into the nut insert of 1. Preventing the penitration of concrete into the inside of 1.

Shows the lock in of concrete into the steel spline fingers of 1 in both ends of the tubular steel dowel preventing its rotating in the concrete.

with the through shutter bolt, located into the nut insert of 1. Preventing the penetration of concrete into the inside of 1.

Figure. 78.

Block out for end pour of concrete stop end. Generally used when a pour can not be completed, within a time limit such as day light to night time. A flexible rubber rebated into a timber end spacer piece, it fits tightly against the cross bar of the reinforcing steel flabric. taking on half of its contour shape.

Preventing the escape of concrete slurry, Saving on work time that cutting in around steel reinfo~rcement bars take. Saving the wastage of timber the time in removing it.

Figure.79.

End view of steel shutters clamp together. Wirth bolts located into tubular steel dowel 1 Figure 78 between steel shutters, steel faibric reinforcing. With IS round steel bars inserted through both steel shutters, as end supports to hold in place Figure 78 stop ends. It makes for easy snip out again saving time on materials that are wasted with end of wall strip outs.