Device and method for producing wood beam assemblies

• US 5,120,378 A
• Filed: 12/05/1990
• Issued: 06/09/1992
• Est. Priority Date: 12/05/1990
• Status: Expired due to Fees

• Current Assignee: Charles A. Porter, James W Knowles
• Original Assignee: Charles A. Porter, James W Knowles
• Inventors: Porter, Charles A., Knowles, James
• Primary Examiner(s): Weston, Caleb
• Application Number:
  US07/622,812
• Time in Patent Office: 552 Days
• Field of Search: 156/257, 156/258, 156/264, 156/266, 156/304.2, 156/512, 156/516, 156/91, 156/92, 156/556, 144/344, 144/345, 144/346, 144/347, 144/348, 144/349, 144/350, 144/351, 144/352, 144/353, 144/354, 144/287, 144/278 R, 118/355, 118/323
• US Class Current: 156/91
• CPC Class Codes: B27G 11/00 Applying adhesives or glue to surfaces of wood to be joined
• CPC Class Codes: B27M 1/08 by multi-step processes
• CPC Class Codes: B27M 3/0026 characterised by oblong elements connected laterally B27M3/006 takes precedence; making fencing or the like comprising bars connected by wires B21F29/02; cane or similar material joined by strand or wire twisting B27J1/006
• CPC Class Codes: B27M 3/18 of furniture or of doors B27D5/003 takes precedence
• CPC Class Codes: Y10T 156/1066 Cutting to shape joining edge surfaces only
• CPC Class Codes: Y10T 156/1075 of plural laminae from single stock and assembling to each other or to additional lamina
• CPC Class Codes: Y10T 156/1079 Joining of cut laminae end-to-end
• CPC Class Codes: Y10T 156/13 Severing followed by associating with part from same source
• CPC Class Codes: Y10T 156/1317 Means feeding plural workpieces to be joined
• CPC Class Codes: Y10T 156/1744 Means bringing discrete articles into assembled relationship

Abstract

A device and method for producing a finished wood material beam assembly and, in particular, a finished prestressed wood material beam assembly. The device includes a support having a top that has movable chord and web adjusters carried thereon. The adjusters may be selectively moved and adjusted as desired both horizontally and vertically, so that the chords and web of the assembly may be received thereon at selected desired heights. As such, the adjusters may be selectively adjusted to precisely conform to the specific size and dimensions of the chords and the web being supported thereby. Securing cylinders and stops carried by the table are also adjustable to securely hold the assembly in place. A prestressing cylinder and prestressing stop carried by the table are also adjustable to prestress a portion of the assembly disposed therebetween. Mechanical and adhesive fasteners are applied to the portions of the assembly by respective devices. In one embodiment, the mechanical and adhesive fasteners are carried by a movable bridge that extends over width of the top and which is movable along the length of the top.

Claims

1. A device for producing a wood material beam assembly having a web section and at least one chord, the device comprised of:

a support including a top for receiving and supporting the assembly thereupon, the top having a pair of side edges with a width therebetween and a pair of end edges with a length therebetween;

a movable bridge positioned extending over the top along the width thereof, the bridge being carried by the support for movement of the bridge along the length of the top;

means carried by the movable bridge for securing the web section and the chords to one another, whereby the wood beam assembly is formed, said means being movable with the bridge along the length of the top.

2. The device of claim 1, further comprised of:

a plurality of securing cylinders disposed spaced along one of the side edges of the top, so as to face the other side edge of the top; and

a plurality of securing stop plates disposed spaced along the other of the side edges of the top, so that each securing stop plate is aligned substantially opposite a respective securing cylinder; and

such that when an assembly is disposed on the top of the support, the assembly is contacted and secured in place between the securing cylinders and the securing stop plates for securing the assembly in position on the top.

3. The device of claims 1, further comprised of:

a plurality of chord adjusters movably carried by the support for selective vertical and horizontal adjustment thereof into the desired selected position for receiving and supporting the chords of the assembly thereon in the respective desired selected positions thereof; and

a plurality of web adjusters movably carried by the support for selective vertical and horizontal adjustment thereof into the selected desired position for receiving and supporting the web of the assembly thereon in the respective desired selected position thereof;

whereby the selected vertical and horizontal adjustment of the chords and the web may be easily provided in response to the size and shape of the chords and the web.

4. A device for producing a prestressed wood material beam assembly having a web section and at least one chord, the device being comprised of:

a support including a top for receiving and supporting the assembly thereupon, the top having a pair of side edges with a width therebetween and a pair of end edges with a length therebetween;

prestressing means carried by the support for prestressing at least one of the chords;

a movable bridge positioned extending over the top along the width thereof, the bridge being carried by the support for movement of the bridge along the length of the top;

means for securing the web section and the chords to one another, whereby the prestressed wood beam assembly is formed, said means being movable with the bridge along the length of the top.

5. The device of claim 4, wherein the means for securing the web section and the chords to one another is carried by the bridge for movement therewith along the length of the top.

6. The device of claim 4, further comprised of:

adjustment means for selectively adjusting the vertical and horizontal positioning of the chords on the top of the support and the web, such that the chords and web are disposed in respective desired selected positions.

7. The device of claim 6, wherein the adjustment means for selectively adjusting the vertical and horizontal positioning of the chords and the web is comprised of:

a plurality of chord adjusters movably carried by the support for selective vertical and horizontal adjustment thereof into the desired selected positions thereof for receiving and supporting the chords of the assembly thereon in the respective desired selected positions thereof; and

a plurality of web adjusters movably carried by the support for selective vertical and horizontal adjustment thereof into the desired selected position for receiving and supporting the web of the assembly thereon in the respective desired selected positions thereof;

whereby the selected vertical and horizontal adjustment of the chords and the web may be easily provided in response to the size and shape of the chords and the web.

8. The device of claim 4, further comprised of:

securing means carried by the support for removably securing the assembly in position on the top.

9. The device of claim 8, wherein the securing means for removably securing the assembly in position on the top is comprised of:

a plurality of securing cylinders disposed spaced along one of the side edges of the top, so as to face the other side edge of the top; and

a plurality of securing stop plates disposed spaced along the other of the side edges of the top, so that each securing stop plate is aligned substantially opposite a respective securing cylinder;

such that when an assembly is disposed on the top of the support, the assembly is contacted and secured in place between the securing cylinders and the securing stop plates for securing the assembly in position on the top.

10. The device of claim 4, further comprised of:

a pair of guide rails carried by the support, one of said guide rails being located extending along each respective side edge of the top; and

wherein the movable bridge includes wheels that mate with the respective guide rails for providing the movement of the bridge along the length of the support.

11. The device of claim 4, wherein the means for securing the chords and the web section to one another includes an adhesive and a means for applying the adhesive to the chords.

12. The device of claim 11, wherein the adhesive is glue and wherein the means for applying the glue includes a glue pot carried by the bridge for movement therewith along the length of the top, a glue spreader in communication with the glue in the glue pot for applying the adhesive to the chords.

13. The device of claim 12, further including a forced air supply for placing the glue in the glue pot in communication with the glue spreader.

14. The device of claim 4, wherein the means for securing the chords to the web station includes mechanical fastener means for applying a mechanical fastener between the chords and the web.

15. The device of claim 14, wherein the mechanical fastener means is a staple gun including staples for applying the staples between the chords and the web.

16. The device of claim 4, wherein the prestressing means for prestressing at least a portion of one of the chords is comprised of:

a prestressing stop plate disposed on one of the end edges of the top, so as to be carried by the support, the prestressing stop plate positioned for contacting the one of the chords;

a prestressing cylinder disposed on the other of the end edges of the top, so as to be carried by the support, the prestressing cylinder positioned for contacting at least a portion of one of the chords opposite of the prestressing stop plate whereby the one chord is prestressed between the prestressing cylinder and the prestressing stop plate.

17. The device of claim 16, wherein the prestressing cylinder of the prestressing means is a pneumatic cylinder.

18. The device of claim 9, wherein the securing cylinders of the securing means for removably securing the assembly in position on the top are pneumatic cylinders.

19. The device of claim 4, wherein the means for securing the chords and the web section to one another includes an adhesive and a means for applying the adhesive to the chords, and a mechanical fastener means for applying a mechanical fastener between the chords and the web.

20. The device of claim 19, wherein the adhesive is glue and wherein the means for applying the adhesive includes a glue pot carried by the bridge for movement therewith along the length of the top, a glue spreader in communication with the glue in the glue pot for applying the adhesive to the chords and further wherein the mechanical fastener means is a staple gun including staples for applying the staples between the chords and the web.

21. A device for assembling a flexurally-reinforced prestressed wood material beam assembly having a top chord, a bottom chord and a web section therebetween, the device comprised of:

a support including as top for receiving and supporting the assembly thereupon, the top having a pair of side edges with a width therebetween and a pair of end edges with a length therebetween;

adjustment means for selectively adjusting the vertical and horizontal position of the top chord, the bottom chord and the web on top of the support, such that the chords and the web are disposed in respective desired selected positioned;

a prestressing stop plate disposed on one of the end edges of the top, so as to be carried by the support, the prestressing stop plate positioned for contacting the bottom chord;

a prestressing pneumatic cylinder disposed on the other of the end edges of the top, so as to be carried by the support, the prestressing pneumatic cylinder positioned for contacting the bottom chord substantially opposite of the prestressing top plate, whereby the bottom chord is prestressed between the prestressing pneumatic cylinder and the prestressing stop plate;

a movable bridge positioned extending over the top along the width thereof, the bridge being carried by the support for movement of the bridge along the length of the top; and

means carried by the bridge for securing the chords to the web section, said means being movable with the bridge along the length of the top, said means including an adhesive and a means for applying the adhesive to the chords and a mechanical fastener means for applying a mechanical fastener between the chords and the web, wherein the adhesive is glue and wherein the means for applying the adhesive includes a glue pot carried by the bridge for movement therewith along the length of the top, a glue spreader in communication with the glue in the glue pot for applying the adhesive to the chords, and further wherein the mechanical fastener means is a staple gun including staples for applying the staples between the chords and the web.

22. The device of claims 21, further comprised of:

a plurality of top chord adjusters movably carried by the support for selective vertical and horizontal adjustment thereof into desired selected position for receiving and supporting the top chord of the assembly thereon in the respective desired selected position thereof;

a plurality of bottom chord adjuster movably carried by the support for selective vertical and horizontal adjustment thereof into desired selected position for receiving and supporting the bottom chord of the assembly thereon in the respective desired selected position thereof; and

a plurality of web adjusters movably carried by the support for selective vertical and horizontal adjustment thereof into the desired selected position for receiving and supporting the web of the assembly thereon in their respective desired selected positioned thereof;

whereby the selected vertical and horizontal adjustments of the top chord, the bottom chord and the web may be easily provided in response to the size and shape of the chords and the web.

23. A device for producing a prestressed wood material beam assembly having a web section and at least one chord, the assembly having a length, the device comprised of:

a support including a top for receiving and supporting the assembly thereupon, the top having a pair of side edges with a width therebetween and a pair of end edges with a length therebetween;

means on the top of the support for selective vertical and horizontal adjustment of the at least one chord into the desired selected position for receiving and supporting the at least one chord of the assembly thereon in the respective desired selected position thereof;

means on the top of the support for selective vertical and horizontal adjustment of the web section into the selected desired position for receiving and supporting the web of the assembly thereon in the respective desired selected position thereof;

whereby the selected vertical and horizontal adjustment of the at least one chord and the web section may be easily provided in response to the size and shape of the at least one chord and the web;

means for securing the assembly on the top of the support between the side edges of the top of the support, the length of the assembly extending between the end edges of the top of the support;

prestressing means carried by the support for prestressing the at least one chord; and

means for securing the web section and the at least one chord to one another, whereby the prestressed wood material beam assembly is formed.

24. The device of claim 23 further comprising:

a movable bridge positioned extending over the support along the width thereof, the bridge being carried by the support for movement of the bridge along the length of the top of the support;

the means for securing the web section and the at least one chord to one another being carried by the movable bridge.

25. A method for producing a wood material beam assembly having a web section and at least one chord, the method comprised of the steps of:

selectively adjusting the vertical and horizontal positioning of chord adjusters and web adjusters that are movably carried by a support into a desired selected position for receiving and supporting the web and the chords of the assembly thereon in the respective desired selected positions thereof;

placing the web and the chords on the web adjusters, such that the web and the chords are positioned at the respective desired selected positions thereof;

moving a bridge carrying fastener means along at least a portion of the chords and web and applying fastener means between the chords and the web, such that a wood material beam assembly is produced.

26. The method of claim 25, wherein the fastener means are mechanical fasteners and wherein the method is further comprised of:

moving the bridge and the mechanical fastener means along at least a portion of the length of the chord and applying mechanical fastening means, such that the chords and the webs are mechanically fastened to one another.

27. A method of producing a wood material beam assembly having a web and at least one chord, the web having a desired width and thickness, the width having a top edge and a bottom edge, each chord having a desired length and thickness, each chord being substantially perpendicular to the respective edges of the web, the method comprised of the steps of:

selectively adjusting the horizontal and vertical positioning of chord adjusters and web adjusters that are movably carried by a support having opposite front and back edges, opposite first and second ends, a movable bridge including a fastener means carried by the support so as to be disposed thereabove, whereby the bridge is movable along the length of the support, said chord and web adjusters being adjusted so as to receive the chords and the webs thereon at a desired selected height above the table;

placing the web and the chords longitudinally on the adjusters, wherein the top edge of the width of the web is oriented toward the back edge of the table and the bottom edge of the width being oriented toward the front edge of the support, and wherein the chords are disposed longitudinally relative to the web, the width of each chord facing upwardly;

moving the bridge and the fastener means along at least a portion of the length of the chord and applying the fastener means to the upward facing width of each chord;

placing the chords longitudinally on the chord adjusters, such that the chords are disposed at the edges of the web, and further such that the fastener means on the width of each chord contacts the respective edge of the web with the chords being substantially perpendicular to the web;

selectively adjusting the horizontal and vertical positioning of the chord adjusters and the web adjusters, so as to receive and position the chords and webs thereon at desired selected heights above the support; and

moving the bridge and the fastener means along at least a portion of the length of the chord and applying fastener means to the chord and the web, whereby the flexurally-reinforced wood material I-beam assembly is produced.

28. The method of claim 27, wherein the support further includes a plurality of securing stops disposed on the front edge of the support and a plurality of securing cylinders including respective piston heads disposed on the back edge of the support and wherein the method further comprises the steps of:

selectively adjusting and actuating the securing stops and the securing cylinders that are carried by the support before moving the bridge, such that the chords and the web are held therebetween; and

deactivating the securing cylinders after producing the wood beam assembly, so that the assembly can be removed therefrom.

29. The method of claim 27, wherein the fastener means includes an adhesive fastener means and a mechanical fastener means, and wherein the method further comprises the steps of:

moving the bridge and the adhesive fastener means along at least a portion of the length of the chord and applying the adhesive fastener means to the upward facing width of each chord; and

moving the bridge and the mechanical fastener means along at least a portion of the length of the chord and applying mechanical fastener means to the chord and the web, whereby the wood beam assembly is produced.

30. A method of producing a prestressed wood material beam assembly having a web and at least one chord, the method comprised of the steps of:

selectively adjusting the vertical and horizontal positioning of chord adjusters and web adjusters that are movably carried by a support into a desired selected position for receiving and supporting the web and the chords of the assembly thereon in the respective desired selected positioned thereof;

placing the web on the web adjusters, such that the web is positioned at the respective desired selected positions thereof;

placing the chords on the chord adjusters, such that the chords are positioned at the respective desired selected positions thereof; and

selectively adjusting the vertical and horizontal positioning of a prestressing stop and a prestressing cylinder carried by the support, so that at least a portion of one of the chords is disposed therebetween;

selectively activating the prestressing cylinder before moving the bridge, such that the at least one chord received therebetween is prestressed;

moving a bridge including a fastener means along at least a portion of the length of the chords and applying fastener means between the chords and the web, whereby the prestressed wood beam assembly is produced; and

selectively deactivating the prestressing cylinder after moving the bridge and producing the prestressed wood beam assembly, such that the prestressed wood beam assembly produced thereby may be removed therefrom.

31. A method of producing a prestressed wood material beam assembly having a web and at least one chord, the web having a desired width and thickness, the width having a top edge and a bottom edge, each chord having a desired length and thickness, each chord being substantially perpendicular to the respective edges of the web, the method comprised of the steps of:

selectively adjusting the horizontal and vertical positioning of chord adjusters and web adjusters that are movably carried by a table having opposite first and back edges, opposite first and second ends, a plurality of securing stops disposed on the front edge of the table, a plurality of securing cylinders including respective piston heads disposed on the back edge of the table, a prestressing stop disposed on the first end of the table, a prestressing cylinder including respective piston heads disposed on the second end of the table, a movable bridge including an adhesive fastener means and a mechanical fastener means, carried by the table, so as to be disposed thereabove, whereby the bridge and the adhesive and mechanical fastener means carried thereby is movable along the length of the table, said chord and web adjusters being adjusted, so as to receive the chords and webs thereon at a desired selected height above the table;

placing the web and the chords longitudinally on the adjusters, the top edge of the width of the web being oriented toward the back edge of the table and the bottom edge of the width being oriented toward the front edge of the table, and such that the chords are disposed longitudinally relative to the web, the width of each chord facing upwardly;

moving the bridge and the adhesive fastener means along at least a portion of the length of the chord and applying the adhesive fastener means to the upward facing width of each chord;

placing the chords longitudinally on the chord adjusters, such that the chords are disposed at the edges of the web, and further such that the adhesive fastener means on the width of each chord contacts the respective edge of the web with the chords being substantially perpendicular to the web;

selectively adjusting the horizontal and vertical positioning of the chord adjusters and the web adjusters, so as to receive and position the chords and webs thereon at desired selected heights above the table;

selectively adjusting and actuating the securing stops and the securing cylinders that are carried by the table before moving the bridge, such that the chords and the web are held therebetween;

selectively adjusting the horizontal and vertical positioning of the prestressing stop and prestressing cylinder, so that the at least one chord is at least partially received therebetween;

selectively activating the prestressing cylinder before moving the bridge, such that the at least one chord of the assembly received therebetween is prestressed;

moving the bridge and the mechanical fastener means along at least a portion of the length of the chord and applying the mechanical fastener means to the chord and the web, whereby the prestressed wood material beam assembly is produced;

deactivating the cylinders, including the prestressing cylinder, so that the prestressed wood material beam assembly is released therefrom.

32. A method of producing a prestressed wood material I-beam assembly having a web and two chords, the web having a desired length, width and thickness, the width further having a top edge and a bottom edge, each chord having a desired length, width and thickness, the width of each having a center and each chord being substantially perpendicular to the respective top and bottom edges of the web wherein the web is disposed substantially in the center of the width of each chord, comprising the steps of:

selectively adjusting the horizontal and vertical positioning of chord adjusters and web adjusters that are carried by a table having opposite first and back edges, opposite first and second ends, a plurality of securing stops disposed on the front edge of the table, a plurality of securing cylinders including respective piston heads disposed on the back edge of the table, a prestressing stop disposed on the first end of the table, a prestressing cylinder including a respective piston head disposed on the second end of the table, and a movable bridge including an adhesive fastener means and a mechanical fastener means, carried by the table so as to be disposed thereabove, whereby the bridge and the adhesive and mechanical fastener means carried thereby is movable along the length of the table, said chord and web adjusters being adjusted, so as to receive the chords and webs thereon at a desired selected height above the table;

placing the web and the chords longitudinally on the adjusters, the top edge of the width of the web being oriented toward the back edge of the table and the bottom edge of the width being oriented toward the front edge of the table, and such that the chords are disposed longitudinally relative to the web, the width of each chord facing upwardly;

moving the bridge and the adhesive fastener means along at least a portion of the length of the chord and applying the adhesive fastener means to the upward facing width of each chord;

placing the one chord longitudinally on the chord adjusters at the top edge of the web and placing the other chord longitudinally on the chord adjusters at the bottom edge of the web, such that the width of each chord having the adhesive fastener means thereon contacts the respective edge of the web, and such that the chords are substantially perpendicular to the web with the reinforcing means therebetween, the top edge of the web and the bottom edge of the web being substantially in the center of the width of each respective chord;

selectively adjusting the horizontal and vertical positioning of the chord adjusters and the web adjusters, so as to receive and position the chords and webs thereon at desired uniform heights above the table;

selectively adjusting and activating the securing stops and the securing cylinders that are carried on the back edge of the table, such that the piston heads of each securing cylinder contacts the one chord at the top of the web and compress the other chord at the bottom of the web against the stops on the front edge of the able such that the "I" shaped beam assembly is formed and held under pressure;

selectively adjusting and actuating the prestressing stops and prestressing cylinder, such that the piston head of the prestressing cylinder contacts the other chord at the bottom of the web, so that stress is applied between the prestressing cylinder and the prestressing stop, the stress being applied along the length of the other chord at the bottom of the web, such that the other chord is prestressed;

moving the bridge and the mechanical fastener means along at least a portion of the length of the chord and applying the mechanical fastener means to the chord and the web, whereby the prestressed wood material I-beam assembly is produced; and

deactivating the cylinders, including the prestressing cylinder, so that the prestressed wood material I-beam assembly produced thereby is released therefrom.