GB2182598A - Wood clamp - Google Patents

Abstract

The wood clamp has a base 17, to which are attached two parallel shafts, 14 and 15, on each of which is mounted a pair of spaced clamp arms 10, 20 and 13, 21, the arms on one of the shafts 14 being pivotable by handles 16 to effect the clamping action. Large items, such as doors, can be held firm in the wood clamp by using support faces 23, against clamp arms 13 and 21, or alternatively by using clamp arm tips, 22, against clamp arms 13 and 21. Items such as sheet metal or plywood can be held firm by clamping between support face 12, and base 17. <IMAGE>

Description

SPECIFICATION Wood clamp This invention relates to a wood clamp.

Saw horses are well known tools for sawing wood.

They comprise of four arms at 60 degrees, into which the wood to be sawn is placed.

Saw horses are relatively ineffective in holding the wood firm.Also the wood has to be held with one hand while being worked, and has to be repositioned in the saw horse after each cut. They are also limited to the shape and size of wood to be worked, and only one piece of wood can be sawn at onetime.

According to the present invention, there is provided four arms on a base, two curved and two at 75 degrees.

The two curved arms are mounted on a shaft, which is rotated by a two screw system mounted on lever arms One curved clamp arm and one straight clamp arm are allowed to slide on their mounting shafts horizontally up and down the machine. The remaining curved clamp arm and the straight clamp arm are fixed on their mounting shafts and do not slide.

A specific embodiment of the invention will now be shown with reference to the accompanying drawings, in which; Figure 1 Illustrates an end on view with clamp arms closed.

Figure2 Shows an end on view with clamp arms open.

Figure 3 Shows front side view of rotating clamp arms mounting shaft, with one fixed curved clamp arm and one sliding curved clamp arm.

Figure 4Shows rear side view offixed clamp arm mounting shaft, with one fixed straight clamp arm and one sliding straight clamp arm.

Figure 511 lustrates a perspective view of straight and curved clamp arms, complete with suitable grips attached.

Referring to the drawing as shown in Figure 3. The wood clamp comprises; abase 17 mounted on four legs 18. (two shown) Fitted to these legs 18 are two foot bars 24. (one shown) Two legs 18 at the front side of the wood clamp fold back when machine is not being used. (not shown) Mounted on the front side ofthe base,17 Figure 3 is one mounting shaft 14. This shaft 14 is attached to base 17 by two bea rings 1 9. Th is allows shaft 1 4 to be rotated bythreadedshafts 16.

Mounted on shaft 14 is one fixed curved clamp arm 10 and one sliding curved clamp arm 20, which slides horizontally on it's mounting shaft 14 in direction of arrows.

On the opposite side of the base 17, illustrated Figure 4, is a fixed mounting shaft 15, on which is fitted one fixed straight clamp arm 13, and one sliding straight clamp arm 21,which slides horizontally on mounting shaft 15 in direction of arrows.

The pieces of wood to be sawn are placed into clamp arm l0asshown Figure2 and reston supportl 1 which holds therm in positionforclamping.

Clamp arms 21 & 20 Figures3 & can then be slid horizontally up and down the machine on shafts 14 & BR< 15, allowing for cuts to be made in between arms 13 & 1 to required length.

Clamps arms 10 & 0 Figure4arethen rotated to clamp by turning threaded shafts 16 clockwise. Turn shaft 16 anti-clockwise to release clamp.

Supports 11, illustrated Figures 1,2 & can also be used to clamp items by sliding clamp arms 20 Figure 3 horizontally along shaft 14to a singular position.

Shown Figures 1 & .

Pieces can be clamped between supportface 12 and base 17, byturning shafts 16clockwise.

Illustrated Figures 2,4 & 5. Items can be clamped by supportfaces 23 against straightclamp arms 13 & 1, or alternatively by tips 22 of curved clamp arms 10 & BR< 20, by sliding horizontally either clamp arm 20 or 21 on mounting shafts 14 & 5 into adirectionally opposite position.

Turn shafts 16 clockwiseto clamp.

All drawings to a scale of 4m m's to 1 mm.

1. A wood clamp consisting of a base mounted on four legs. The base having attached two parallel shafts onto which two clamp arms are attached onto each shaft.Two clamp arms are rotated on the mounting shaft bytwothreaded shafts.

2. Awood clamp as claimed in Claim 1.wherein one of the clamp arms slides horizontally along each ofthe mounting shafts.

3. Awood clamp as claimed in Claims 1 & wherein support faces are provided to supportwork items.

Amendments to the claims have been filed, and have the following effect: Claims 1-3 above have been deleted ortextually amended.

Newortextually amended claims have been filed asfollows: Claims 1-9 1. Wood clamping apparatus comprising a base supported upon four legs and, attached to the base, two substantially parallel shafts, on each of which two clamp arms are mounted, one of said shafts being rotatable by means of threaded shafts so that the two clamp arms mounted thereon are pivotally adjustable and capable of clamping wood against the other arms and/oragainstthe base.

2. Apparatus as claimed in claim 1 wherein the pivotally adjustable clamp arms are curved, while the other, non-pivotal, arms are straight.

3. Apparatus as claimed in claim 2 wherein the non-pivotal clamp arms each extend at an angle of 75" to the horizontal.

4. Apparatus as claimed in any preceding claim wherein one of the two pivotally adjustable clamp arms and one of the other, non-pivotal, arms are slidable longitudinally oftheir respective mounting shafts.

5. Apparatus as claimed in any preceding claim wherein the non-pivotal clamp arms each comprise two parts arranged side by side and the pivotally

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (9)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Wood clamp This invention relates to a wood clamp. Saw horses are well known tools for sawing wood. They comprise of four arms at 60 degrees, into which the wood to be sawn is placed. Saw horses are relatively ineffective in holding the wood firm.Also the wood has to be held with one hand while being worked, and has to be repositioned in the saw horse after each cut. They are also limited to the shape and size of wood to be worked, and only one piece of wood can be sawn at onetime. According to the present invention, there is provided four arms on a base, two curved and two at 75 degrees. The two curved arms are mounted on a shaft, which is rotated by a two screw system mounted on lever arms One curved clamp arm and one straight clamp arm are allowed to slide on their mounting shafts horizontally up and down the machine. The remaining curved clamp arm and the straight clamp arm are fixed on their mounting shafts and do not slide. A specific embodiment of the invention will now be shown with reference to the accompanying drawings, in which; Figure 1 Illustrates an end on view with clamp arms closed. Figure2 Shows an end on view with clamp arms open. Figure 3 Shows front side view of rotating clamp arms mounting shaft, with one fixed curved clamp arm and one sliding curved clamp arm. Figure 4Shows rear side view offixed clamp arm mounting shaft, with one fixed straight clamp arm and one sliding straight clamp arm. Figure 511 lustrates a perspective view of straight and curved clamp arms, complete with suitable grips attached. Referring to the drawing as shown in Figure 3. The wood clamp comprises; abase 17 mounted on four legs 18. (two shown) Fitted to these legs 18 are two foot bars 24. (one shown) Two legs 18 at the front side of the wood clamp fold back when machine is not being used. (not shown) Mounted on the front side ofthe base,17 Figure 3 is one mounting shaft 14. This shaft 14 is attached to base 17 by two bea rings 1 9. Th is allows shaft 1 4 to be rotated bythreadedshafts 16. Mounted on shaft 14 is one fixed curved clamp arm 10 and one sliding curved clamp arm 20, which slides horizontally on it's mounting shaft 14 in direction of arrows. On the opposite side of the base 17, illustrated Figure 4, is a fixed mounting shaft 15, on which is fitted one fixed straight clamp arm 13, and one sliding straight clamp arm 21,which slides horizontally on mounting shaft 15 in direction of arrows. The pieces of wood to be sawn are placed into clamp arm l0asshown Figure2 and reston supportl 1 which holds therm in positionforclamping. Clamp arms 21 & 20 Figures3 & can then be slid horizontally up and down the machine on shafts 14 & BR< 15, allowing for cuts to be made in between arms 13 & 1 to required length. Clamps arms 10 & 0 Figure4arethen rotated to clamp by turning threaded shafts 16 clockwise. Turn shaft 16 anti-clockwise to release clamp. Supports 11, illustrated Figures 1,2 & can also be used to clamp items by sliding clamp arms 20 Figure 3 horizontally along shaft 14to a singular position. Shown Figures 1 & . Pieces can be clamped between supportface 12 and base 17, byturning shafts 16clockwise. Illustrated Figures 2,4 & 5. Items can be clamped by supportfaces 23 against straightclamp arms 13 & 1, or alternatively by tips 22 of curved clamp arms 10 & BR< 20, by sliding horizontally either clamp arm 20 or 21 on mounting shafts 14 & 5 into adirectionally opposite position. Turn shafts 16 clockwiseto clamp. All drawings to a scale of 4m m's to 1 mm. CLAIMS 1. A wood clamp consisting of a base mounted on four legs. The base having attached two parallel shafts onto which two clamp arms are attached onto each shaft.Two clamp arms are rotated on the mounting shaft bytwothreaded shafts. 2. Awood clamp as claimed in Claim 1.wherein one of the clamp arms slides horizontally along each ofthe mounting shafts. 3. Awood clamp as claimed in Claims 1 & wherein support faces are provided to supportwork items. Amendments to the claims have been filed, and have the following effect: Claims 1-3 above have been deleted ortextually amended. Newortextually amended claims have been filed asfollows: Claims 1-9

1. Wood clamping apparatus comprising a base supported upon four legs and, attached to the base, two substantially parallel shafts, on each of which two clamp arms are mounted, one of said shafts being rotatable by means of threaded shafts so that the two clamp arms mounted thereon are pivotally adjustable and capable of clamping wood against the other arms and/oragainstthe base.

2. Apparatus as claimed in claim 1 wherein the pivotally adjustable clamp arms are curved, while the other, non-pivotal, arms are straight.

3. Apparatus as claimed in claim 2 wherein the non-pivotal clamp arms each extend at an angle of 75" to the horizontal.

4. Apparatus as claimed in any preceding claim wherein one of the two pivotally adjustable clamp arms and one of the other, non-pivotal, arms are slidable longitudinally oftheir respective mounting shafts.

5. Apparatus as claimed in any preceding claim wherein the non-pivotal clamp arms each comprise two parts arranged side by side and the pivotally adjustable clamp arms are capable of engaging between these two parts.

6. Apparatus as claimed in any preceding claim wherein the pivotally adjustable clamp arms have bevelled surfaces attheirtips.

7. Apparatus as claimed in any preceding claim wherein the pivotally adjustable clamp arms are provided with lateral supports capable of clamping wood against the other arms and/or against the base.

8. Apparatus as claimed in claim 7 wherein the lateral supports have bevelled surfaces attheirfree ends.

9. Wood clamping apparatus substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.