GB2067948A - Combination tools - Google Patents

Abstract

A combination tool including a number of metal working devices (121 and 123, 126 and 127, 135 and 137, 131 and 133, 134 and 138 and 140) for working wire, rod, bar or sheet materials. The tool is actuated by a single manual lever (118), each metal working device being operable by displacement of said lever in one direction or the other, to effect such metal working operations as cropping, shearing, punching, bending, rolling, and rivetting and, in one form, scroll work. The tool basically comprises a base plate (111), presenting elements of the working tools, a drive member (113), pivotally connected to the base plate and presenting elements of the working tools for co-operation with the elements presented by the base plate, and the hand lever for effecting pivotal displacement of the drive member relative to the base plate to simultaneously work said working devices.

Description

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GB 2 067 948 A 1

SPECIFICATION Combination tools

This invention relates to combination tools, that is to say tools capable of performing more than 5 one operation, and the invention has particular application to manually actuated combination tools for working metal in wire or strip form.

Manually actuated combination tools for working metal in strip or wire form are well known 10 in the art and, for example, in the British Patent Specification No. 1,066,274 there is disclosed a combination tool capable of bending metal strip or wire or of caulking a rivet to secure two metal strips together by manipulation of a single handle 15 whilst, by fitting a second handle, the tool can be used to impart a curvature to metal strip or wire.

The present invention seeks to provide a combination tool capable of performing a plurality of metal working operations.

20 According to the present invention there is provided a combination tool including a plurality of metal working devices and comprises a base plate, a drive member pivotally attached to said base plate, and a hand lever for effecting pivotal 25 displacement of said drive member relative to said base plate, said base plate presents elements of said metal working devices and said drive member presents elements of said metal working devices for co-operation with said elements presented by 30 the base plate whereby, when the drive member is pivotally displaced in one direction, a plurality of metal working devices are operated simultaneously.

Preferably the drive member is pivotally 35 displaceable in a plane parallel to the major plane of the base plate.

Preferably the hand lever is pivotally attached to said base plate and includes an edge cam, conveniently an eccentric, rotatable in a slot in the 40 drive member spaced from the pivotal axis of the drive member, whereupon, angular displacement of the hand lever causes rotation of said cam to effect pivotal displacement of the drive member relative to the base plate.

45 Preferably the base plate is supported by a frame so as to be pivotally displaceable between two positions substantially at right angles to one another and, conveniently, the frame includes means for attachment to a relatively fixed body, SO such as an edge region of a work table.

Preferably the base plate includes a shearing block and said drive member presents a shearing edge which, when the drive member is displaced in one direction, co-operates with the shearing 55 block to shear metal strip or wire entered between said shearing block and said edge.

Preferably the combination tool includes a metal punching device comprising a punch and an an anvil and, conveniently, the anvil is secured to 60 the base plate and the punch is attached to the drive member so as to advance into working engagement with the anvil when the drive member is pivotally displaced in one direction.

Preferably the tool includes a slide element,

65 slidably supported for displacement, and said slide element is linked to said drive member for displacement in a direction determined by the direction of pivotal displacement of the drive member relative to the base plate. 70 Preferably the slide element includes a bending element co-operable with two anvils, conveniently in the form of rollers, fixed relative to the base plate one to each side of the path of the slide element whereupon, by pivotal displacement of 75 the drive member in one direction, the slide element is linearly displaced to advance the bending element against a metal strip or wire between the bending element and the two anvils.

In a preferred embodiment in accordance with 80 the invention means are provided for attaching a roller to the slide element, said roller being rotatable by a manually actuated lever and being co-operable with the said two fixed anvils to impart a curvature to a metal strip between the 85 manually rotatable roller and the two anvils, in dependence upon the position of the slide element and thereby the position of the rotatable roller relative to the two fixed anvils.

In one embodiment in accordance with the 90 invention the bending element is removable and said manually rotatable roller and said bending element are interchangeable.

Preferably the slide member includes a hammer element secured to said slide and co-operable 95 with an anvil fixed relative to the base plate whereupon, by rotation of the drive member in one direction, the hammer can be advanced towards the anvil to caulk a rivet therebetween.

Preferably the tool provides a shearing edge on 100 the drive member co-operable with a shearing edge on the base plate for cropping rod, bar and wire.

In one embodiment the slide member is supported to displace along an arcuate path 105 defined by a tool plate secured to the base plate.

In another embodiment said slide element is supported between two guides secured to the base plate and said slide element is restrained by said guides to displace along a linear path. 110 In one preferred embodiment in accordance with the invention said slide member includes a peg which extends through a slot in the drive member and by which pivotal displacement of the drive member affects linear displacement of the 115 slide member.

Preferably means are provided for limiting the linear displacement of the slide member and, conveniently, said means are adjustable to allow the stroke of the slide element to be varied. 120 In one embodiment in accordance with the invention the slide member includes a peg and the anvil for riveting is replaceable by a pivot pin for a manually rotatable lever which presents an arcuate member, rigid with said handle, and 125 having a peripheral curvature increasing in radius from a slot-like opening intended to receive one end of a metal strip or wire therein. Thus, with an end of a metal wire or strip in said slot and the metal strip supported against said peg, the handle

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can be rotated to impart a curvature defined by the said periphery to the end regions of the metal wire or strip adjacent the slot-engaged end. Preferably a second arcuate member is 5 pivotally attached at one end to that end of said first arcuate member defining the periphery of greatest radius and, in that position for said second segment closest to the pivotal axis for the handle, said second segment presents a periphery 1 o which increases in radius from the pivotal connection with the first segment so that, said first and second segments in combination, present a periphery gradually increasing in radius away from said slot-iike opening.

15 Preferably the device includes a third arcuate member, pivotally attached at one end to that end of the second member most remote from the first member, and, when in its closest position to the axis of the handle, the third arcuate member 20 presents a periphery which increases in radius from that end attached to the second segment and whereby, the three arcuate members in combination present a substantially continuous periphery which increases in radius towards the 25 free end of the third segment.

Preferably said arcuate members are detachably secured together and are interchangeable with other arcuate members of different curvatures.

30 In a preferred embodiment the tool includes a tool block secured to the base plate and cooperating with an opening through the drive member to define two inclined shearing edges for shearing angle section material. 35 The invention will now be described further by way of example with reference to the accompanying drawings in which:—

Fig. 1 shows a perspective view of a base plate for a combination tool with some of the 40 attachments to one side thereof illustrated in exploded perspective.

Fig. 2 shows in axial view of the manual actuating means for the tool.

Fig. 3 shows a side view of the actuating means 45 shown in Fig. 2,

Fig. 4 shows, in exploded view, the attachments to the base plate on the reverse side to that illustrated in Fig. 1,

Fig. 5 shows a front view of the slider and guide 50 arrangement, illustrated in Fig. 4, in assembled condition,

Fig. 6 shows a modified form of the combination tool,

Fig. 7 shows a view of an attachment for scroll 55 work.

Fig. 8 shows an end view of one arrangement for supporting the base plate in one position,

Fig. 9 is a view, similar to Fig. 8, with the base plate in its alternative position,

60 Fig. 10 shows a side view of a second embodiment for a combination tool,

Fig. 11 shows a plan view of the tool illustrated in Fig. 10,

Fig. 12 shows a cross-section through the tool 65 on the line II :ll in Fig. 10, and

Fig. 13 shows a side view of the tool from the opposite direction to that of Fig. 10.

In the illustrated example a base plate,

generally indicated by reference numeral 11, comprises a tool supporting part 11a with a base part 11 b substantially at right angles thereto. The base part 11A conveniently includes two countersunk holes 12 and 13, by which the base may be secured to a work table. The base part 116 also includes two upstanding lugs 14 and 15, with axially aligned bores 14a and 15a, by which the base plate 11 may be supported by a support arrangement, to be described hereinafter, as an . alternative arrangement to the securement by screws through holes 12 and 13.

The base part 11 a includes a bore 16 and a , drive member 17 is pivotally attached to part 11 a by a screw 18 which passes through a bore 19 in drive member 17 and through bore 16, the screw 18 being secured by a nut 20 on the reverse side of part 11 a.

The part 11a includes an opening 21 therethrough and the part 11 a below opening 21, as viewed in Fig. 1, is deflected away from the plane of the illustrated face to house a shearing block 22 so that the face of block 22 exposed at the illustrated face of part 11 a lies in the plane of said face. The block 22 is secured by screws 23 and 24 entering into tapped holes 25 and 26 respectively in plane 11 a.

That part of drive member 17 intended to sweep a path adjacent the shearing block 22 has a configuration {not shown) which co-operates with the shearing block 22 to shear a metal strip or wire passing through the opening 21 when the drive member 17 is rotated anti-clockwise as viewed in Fig. 1. Thus, the tool affords means for shearing metal in wire, rod, or strip form.

The part 11a further includes a section, generally identified by reference numeral 27, deflected away from the plane of the illustrated face to partially house a die 28 which is secured to part 11 a by two screws 29 and 30 which pass through bores in die 28 and enter respectively into tapped bores 31 and 32 in deflected part 27. The die 28 has a bore 28a passing transversely therethrough and a vertical slot 286, extending . from the upper surface of the die block downwardly some distance below the axis of the bore 28a.

A punch 33, attached to a yoke 34, is slidably displaceable in bore 28a and the yoke 34 is secured to drive member 17 by a pivot screw 35 which passes through holes 34a in the two arms of the yoke and through a bore 36 in the drive member 17 in such manner that the two arms of the yoke embrace drive member 17. Thus, on clockwise rotation of the drive member 17 as viewed in Fig. 1, the punch 33 is advanced along bore 28a and can punch a hole through the thickness of a metal strip or plate entered into the slot 286.

The part 11a includes a slot 37 into which that arm of the yoke 34 engaging the side of the drive member 17 adjacent part 11 a can project so that

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the part 11 a does not interfere with the movement of yoke 34.

The part 11 a further includes a tapped bore 38 by which a platform element 39 may be attached 5 to part 11 a by a screw 40 which passes through a slot 39a in element 39. The element 39 has an open slot intended to receive the die 28 therein so that element 39 can support a metal strip or plate entered into the slot 28b of die 28 and the 10 supporting surface of element 39 can be vertically adjusted to any desired plane below the axis of bore 28a.

Thus, the tool provides a punch device for punching holes in metal sheet or strip. The drive 15 member 17 is displaced by a manually actuated mechanism, generally indicated by reference numeral 41, comprising a hand lever 42 with an annular flange 43, an eccentric 44, and a spindle 45 integral therewith. The spindle 45 passes 20 through a slot opening 46 in drive member 17 and through a bore 47 in the part 11 a, the free end of spindle 45 being threaded and captive by a nut 48. With the spindle 45 entered into bore 47 and secured by nut 48 the eccentric 44 lies in the slot 25 46. The flange 43 has a diameter greater than the width of slot 46 whereupon flange 43 assists in retaining drive member 17 in close relationship with part 11 a.

It will thus be seen that when the mechanism 30 41 is mounted as described above angular displacement of the hand lever 42 causes rotation of spindle 45 in bore 47, and the eccentric 44 causes pivotal displacement of drive member 17 in a direction dependent upon the direction of 35 displacement of the handle 42.

The part 11 a includes a vertical slot 49 and, on the reverse face from that illustrated in Fig. 1 (see Fig. 4) a guide element, generally indicated by reference numeral 50, is secured to the part 11 a 40 by screws 51, 52, 53 and 54. The guide element is of generally U-shaped configuration comprising parallel limbs 55 and 56 and a bridge part 57, and the upper free ends of the limbs 55 and 56 are connected by a bridge piece 58. The distance 45 between the limbs 55 and 56 is greater than the width of the slot 49, the element 50 is secured to , part 11 a so that the slot 49 opens between the limbs 55 and 56, and a slide element 59 is slidably disposed between the two limbs 55 and 50 56 whilst abutting the face of part 11 a surrounding the slot 49.

A pin 60 passes through a slot 61 in driving member 70 and through the slot 49 for securement, as by threaded engagement, with the 55 slide element 59 whereupon, pivotal displacement of the drive member 17 effects linear displacement of the slider element 59 within the guide element 50.

An anvil 62 is screwed into a tapped bore 63 in 60 the bridge part 57 and a hammer 64 is screwed into a tapped bore 65 in the slider element 59 so that, when drive member 17 is rotated in an anticlockwise direction, as viewed in Fig. 1, the slider element 59 is downwardly displaced within 65 the guide element 50 and the hammer 64

approaches anvil 62 and can caulk the head of a rivet between anvil 62 and hammer 64, the axis of the rivet lying in a plane passing through the axis of the anvil 62 and hammer 64.

70 Thus, the tool provides a device for riveting.

The slider element 59 also has a bending block 66 secured thereto by a screw 67 engaged in a tapped bore 68 in element 59, a roller 69 is mounted on a screw 70 secured in a tapped bore 75 71 in limb 55, and a roller 72 is mounted on a screw 73 secured in a tapped bore 74 in limb 56. The plane passing through the axes of roller 69 and 72 lies at right angles to the axis of the slider element 59 and thus, by rotating drive member 17 80 anticlockwise as viewed in Fig. 1 the bending block 66 may be advanced against a strip of wire or bar resting on the rollers 69 and 72 to cause said bar to bend.

In the illustrated embodiment the bending 85 block 66 is of cube-like configuration arranged with a plane passing through two opposite corners parallel to the longitudinal direction,of the slider element 59 so that the block presents a corner to a wire or bar resting on the rollers 69 and 72 to 90 effect a sharp right angle bend to said wire or strip. However, the bending block 66 may be interchangeable with bending blocks of other forms so as to provide, for example, a bend in the wire or rod of desired curvature.

95 Thus, it will now be appreciated that the tool provides means for bending a metal wire rod or bar. In the modified arrangement illustrated in Fig. 6 the screw 67 is removed, to allow the bending block 66 to be removed, and a knurled 100 roller 75, secured on a hand lever 76, is attached to slider element 59 by the screw 67 which passes, with clearance, through a bore 77 concentric with roller 75 before entering into threaded engagement with the bore 68 in slider 105 element 59. Thus, by angularly displacing hand lever 76, the knurled roller 75 is rotated about the axis of screw 67.

With this arrangement, and with a strip of metal wire rod or bar resting on the rollers 69 and 110 72, the drive member 17 can be pivotally rotated anticlockwise as viewed in Fig. 1 to lower slider element 59 and thereby engage the knurled roller 75 with said wire, rod, or strip and, by further advancing the drive member 17 the knurled roller 115 75 will deflect the wire, rod or bar between rollers 69 and 72 and, by then rotating hand lever 76, a desired curvature can be imparted along the length of the metal, wire, rod or bar.

Thus, with the attachment illustrated in Fig. 6, 120 the tool provides means for imparting a curvature along the length of a metal, wire, rod or bar.

The mechanism illustrated in Fig. 7 allows a further operation to be performed and, as will be noted, said mechanism comprises a hand lever 78 125 with an arcuate section 79 secured thereto, a second arcuate section 80 pivotally attached to the free end of the first section 79 and a third arcuate section 81 pivotally attached to that end of the second section 80 remote from the first 130 section 79. The first section 79 presents an

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abutment face 79a engageable with an abutment face 80a presented by the second section 80 to limit clockwise displacement of the second section 80 relative to the first section 79, and the 5 second section 80 presents an abutment face 806 engageable with an abutment face 81 a on the third section 81 to limit clockwise displacement of the third section 81 relative to the second section 80. The first section 79 includes a slot opening 82 10 and, when the faces 79a and 80a and faces 806 and 81a are in abutting relationship, the sections 79,80 and 81 present peripheral surfaces 796, 80c and 816 defining a curvature of increasing radius from the slot 82 towards the free end of 15 element 81 with respect to the axis of a bore 83 passing through the hand lever 78 and the section 69.

The mechanism illustrated in Fig. 7 and described above is attached to the tool by 20 removing the anvil 62 and entering a long screw (not shown) through the bore 83 and into the threaded bore 63 in bridge part 57, the long screw allowing the sections 79, 80 and 81 to lie in planes outwardly of the plane passing through the 25 free ends of rollers 69 and 70. The screw 67 is also removed, to release the bending block 66, and a peg 84 is screwed into the threaded bore 68 in slider element 59 and has such length as to be outstanding from that plane passing through the 30 free ends of rollers 69 and 70.

With the mechanism 78 to 83 mounted on the tool as described above the section 80 can be rotated anticlockwise (as viewed in Fig. 7) relative to section 79 and section 81 can be rotated 35 anticlockwise relative to section 80 (as viewed in Fig. 1) to allow one end of a metal wire, rod, or bar 85 to be entered into the slot 82 when, by rotating the lever 78 anticlockwise (as viewed in Fig. 7) the wire, rod or strip 85 abuts the peg 84, whereupon 40 further anticlockwise rotation of hand lever 79 causes the wire, rod or bar 85 to be progressively wound onto the peripheral surfaces 796,80c and 816, thus to produce a spiral form. It will be appreciated that as hand lever 78 is rotated the 45 metal, wire, rod or bar 85 will deflect the sections 80 and 81 clockwise (as viewed in Fig. 7) until the abutment faces 79a and 80a are in abutting relationship and the surfaces 806 and 81 a are in abutting relationship.

50 Thus, with the mechanism illustrated in Fig. 7 attached to the tool, it is possible to bend a wire, rod or bar to a scroll form.

It will be appreciated that the sections 79,80 and 81 may be detachably connected together to 55 permit one or more of said sections to be interchanged with sections of different peripheral surfaces, whereupon windings of different configurations can be obtained.

Figs. 8 and 9 show a support arrangement for 60 the base plate 11, said arrangement comprising a base member 86 with its ends 87 and 88 deflected through 90° to receive the part 116 therebetween. A bore 89 passes through both ends 87 and 88 and a pivot pin 90 passes through 65 the bore 89 and through the bores 14a and 15a of part 116, thus to pivotally retain base plate 11 with the support 86, 87, 88. The base member also has two bars 91 and 92 welded thereto and bent to channel form and screw elements 93 and 94 pass through the free end limbs 91 a and 92a of bars 91 and 92 and whereby the support arrangement can be mounted on the edge of a work bench by entering the edge of the work bench into the channel form of bars 91 and 92 and tensioning the screw elements 93 and 94 to frictionally engage the bench edge.

The end 87 has a bore 95 therethrough so that,

when the base plate 11 is displaced to the position shown in Fig. 8, a pin or bolt (not shown)

located in bore 95 will retain the base plate 11 in the illustrated position.

A screw 96 passes through a clearance bore 97 in bridge piece 58 and into threaded engagement >

with the slider element 59 to allow the stroke of slider element 59 to be adjusted.

In the embodiment illustrated in Figs. 10 to 13 inclusive a base plate 111, with a base flange 111a, which may include means (not shown) for attaching the base plate to a frame in identical manner to the Figs. 1 to 9 embodiment, includes a bore 112 and a drive member 113 presents a spindle 114, rotatably engaged in the bore 112,

whereupon the drive member 113 is angularly displaceable about the axis of spindle 114 in a plane parallel to the base plate 111.

The drive member 113 is angularly displaced about the axis of spindle 114 by a manually actuated mechanism comprising a spindle 115,

rotatable in a bore 116 presented by a base plate 111, an eccentric 117 secured with the spindle 115, and a hand lever 118 secured to the eccentric 117, the eccentric 117 being located in a cam aperture 119 in the driving member 113.

Thus, when the hand lever 118 is manually displaced to rotate the eccentric 117 about the axis of spindle 115 the eccentric 117, engaged in the cam aperture 119 in the drive member 113,

cases the drive member 113 to be angularly displaced about the axis of spindle 114. *

A yoke 120, pivotally attached to the drive member 113, presents a punch 121 axially displaceable in an aperture 122 of an anvil plate ^

123 secured to base plate 111. The anvil plate

123 presents a material receiving slot 124 open at one end and which extends from said open end past the aperture 122 and that face 125 of slot

124 remote from the drive member 113 constitutes the anvil surface of plate 123.

When the drive member 113 is displaced to its extreme anticlockwise position (as viewed in Fig. 10) the punch 121 lies withdrawn from the slot 124 and a sheet of material to be punched, for example a sheet of metal or plastics material, can be entered into the said slot 124. With the material correctly located relative to the anvil plate 123 the drive member 113 can be rotated clockwise (as viewed in Fig. 1) about the axis of spindle 114, whereupon the punch 121 is advanced, first to trap the material against the anvil surface 125 and, thereafter, upon further

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clockwise rotation of drive member 113, the punch 121, co-operating with the aperture 122 in anvil surface 125, shears a slug from the material and pushes the slug into the aperture 122 behind 5 surface 125. The drive member 113 is then rotated anticlockwise about the axis of spindle 114 to withdraw the punch 121, thereby allowing the material to be removed from the tool.

It will be observed from Fig. 12 that the punch 10 is of rectangular cross section, the base of slot 124 is inclined on both sides of the mid plane of anvil plate 123, and the face of the punch 122 closest to the bore of slot 124 is immediately adjacent said base whereupon, a sheet material 15 having an edge in slot 124 can have a rectangular piece notched out of said edge at right angles to said edge or, by inclining the edge to the plane of the plate 123, inclined to said edge.

The base plate 111 includes an arcuate slot 20 126, the arcuate sides of which are based on radii the centres of which lie on the rotational axis of the spindle 14, and the drive member 113 includes, at its lower edge, an arcuate notch 127 the centre of which is at the same radius as the 25 mean radius of the slot 126. Thus, with the drive member 113 rotated to its most clockwise position (as viewed in Fig. 10) a round rod, bar or wire can be slidably inserted through the slot 126 and, by rotating the drive member 113 30 anticlockwise about the axis of spindle 114, the inserted member will be sheared.

A tool plate 128 is secured to that face of base plate 11 remote from the drive member 113 and said piate 128 presents an arcuate slot 129 35 therein, the slot 129 being concentric with the slot 126 but of larger overall dimensions so that a block 130, slidably disposed in slot 129, is held captive against that part of base plate 111 exposed through slot 129 (as shown in Fig. 13). 40 The block 129 is secured to drive member 113 by a pin 131 which has part of its length threaded, the threaded end of the pin 131 passing first through a threaded bore in block 129, through the slot 126, and into a threaded bore 132 in the drive 45 member 113.

As will be seen from Fig. 11 and 13 the unthreaded part of pin 131 projects from the block 130 and the base plate 111 presents two fixed pins 133 and 134, one to each side of the arcuate 50 slot 129, and the axes of pins 133 and 134 lie in a common plane passing through the axis of spindle 114. Thus, a bar or rod of material can be placed between the pins 131, 133 and 134, pins 133 and 134 being to one side of the rod or bar and 55 the pin 131 being on the other side of the bar whereupon, by rotation of drive member 113 in the appropriate direction, the pin 131 is displaced about the axis of spindle 114 and can engage the bar material and, in co-operation with the posts 60 133 and 134, bend the bar material. As with the embodiment of Figs. 1 to 9 inclusive, the pins 131, 133 and 134 may have roller bodies rotatably supported thereon and the pin 131 may have its roller body knurled and rotatable by way 65 of a manual lever (such as the lever 76) to continue a bend in the bar material in the length direction of said material.

The tool plate 128 supports a tool block 135 in an opening 136 through base plate 111 and two adjacent edges of block 135 co-operate with two adjacent edges of an opening 137 in drive member 113 to define a shearing device for angle sections.

A tool block 138 is inserted in a slot opening 139 in base plate 111 and is secured in said slot opening 139, as by welding, and the upper edge of block 138 co-operates with an edge region 140 of drive member 113 to define a shearing device for flat bar and strip materials.

It will be seen that with the above described arrangement bar or strip material can be sheared (block 138 and edge 140), notched (punch 121 and anvil plate 123), bent (pins 131, 133 and 134), or rolled (pin 131, 133 and 134 when fitted with rollers and a roller actuating hand lever), sheet material can be punched or notched (pin 121 and anvil plate 123), rod or wire can be sheared (slot 26 and notch 127) and bent or rolled (pins 131, 133 and 134) and angle section material can be sheared (tool plate 135 and the edges of opening 137) or notched (pin 121 and anvil plate 123) simply by displacing the drive member 113 in the appropriate direction of angular displacement.

Claims (24)

1. A combination tool including a plurality of metal working devices and comprises a base plate, a drive member pivotally attached to said base plate, and a hand lever for effecting pivotal displacement of said drive member relative to said base plate, said base plate presenting elements of said metal working devices and said drive member presenting elements of said metal working devices for co-operation with said elements presented by the base plate whereby, when the drive member is pivotally displaced in one direction, a plurality of metal working devices are operated simultaneously.

2. A combination tool as claimed in claim 1 in which the drive member is pivotally displaceable in a plane parallel to the major plane of the base plate.

3. A combination tool as claimed in claim 1 or 2 in which the hand lever is pivotally attached to said base plate and includes a cam engaged with the drive member and presenting an edge cam profile eccentric to the rotational axis for the hand lever, said cam being spaced from the pivotal axis of the drive member.

4. A combination tool as claimed in claim 1,2 or 3 in which the base plate is supported by a frame so as to be pivotally displaceable between two positions substantially at right angles to one another.

5. A combination tool as claimed in claim 4 including means for attaching the frame to a relatively fixed body.

6. A combination tool as claimed in claim 1,2, 3, 4 or 5 in which the base plate includes a

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shearing block and said drive member presents a shearing edge co-operable with said shearing block when the drive member is displaced in one direction.

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7. A combination tool as claimed in claim 1, 2, 3,4, 5 or 6 including a metal punching device comprising a punch and an anvil, said anvil being secured to the base plate and said punch being attached to the drive member so as to advance 10 into working engagement with the anvil when the drive member is pivotally displaced in one direction.

8. A combination tool is claimed in any preceding claim in which a slide element is 15 supported for displacement and said slide element is linked to said drive member for displacement in a direction determined by the direction of pivotal displacement of the drive member relative to the base plate.

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9. A combination tool as claimed in claim 8 in which the slide element includes a bending element co-operable with two anvils fixed relative to the base plate.

10. A combination tool as claimed in claim 9 in 25 which two anvils are located one to each side of the path of the slide.

11. A combination tool as claimed in claim 8, 9 or 10 including means for attaching a roller to the side element, said roller being rotatable by a

30 manually actuated lever and being co-operable with the two fixed anvils to impart a curvature to a metal strip between the manually rotatable roller and the two anvils, dependent upon the position of the slide element and thereby the position of the 35 rotatable roller relative to the two fixed anvils.

12. A combination tool as claimed in claim 11 in which the bending element is removable and said manually rotatable roller and said bending element are interchangeable.

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13. A combination tool as claimed in claim 8 in which said slide member includes a hammer element co-operable with an anvil fixed relative to the base plate whereupon, by rotation of the drive member in one direction, the hammer can be 45 advanced towards the anvil to caulk a rivet therebetween.

14. A combination tool as claimed in claim 8, 9, 10,11, 12 or 13, in which the slide member is supported to displace along an arcuate path

50 defined by a tool plate secured to the base plate.

15. A combination tool as claimed in claim 14 including a shearing edge on the drive member co-operable with a shearing edge on the base plate for cropping rod, bar and wire.

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16. A combination tool as claimed in any one of claims 8 to 13 inclusive in which said slide element is supported between two guides secured to the base plate and said slide element is restrained by said guides to displace along a linear 60 path.

17. A combination tool as claimed in claim 16 in which said slide member includes a peg which extends through and is slidable along a slot in the drive member, said slot being inclined to the direction of sliding for the slide element.

18. A combination tool as claimed in claim 16 or 17 in which means are provided for limiting the linear displacement of the slide member and said means are adjustable to allow the stroke of the slide element to be varied.

19. A combination tool as claimed in any one of claims 8 to 18 inclusive in which the slide member includes a peg and a pivot pin fixed relative to the base plate for a manually rotatable lever which presents an arcuate member rigid with said handle and having a peripheral curvature increasing in _ radius from a slot-like opening intended to receive one end of a metal strip or wire therein.

20. A combination tool as claimed in claim 19 in which a second arcuate member is pivotally attached at one end to that end of said first arcuate member defining the periphery of greatest radius and, in that position for said second segment closest to the pivotal axis for the handle, said second segment presents a periphery which increases in radius from the pivotal connection with the first segment in such manner that said first and second segments, in combination,

present a periphery gradually increasing in radius away from said slot-like opening.

21. A combination tool as claimed in claim 20 in which a third arcuate member is pivotally attached at one end.to that end of the second member most remote from the first member and, when in its closest position to the axis of the handle, the third arcuate member presents a periphery which increases in radius from that end attached to the second segment in a manner such that the three arcuate members, in combination, present a substantially continuous periphery which increases in radius towards the free end of the third segment.

22. A combination tool as claimed in claim 20 or 21 in which said arcuate members are detachably secured together and are interchangeable with other arcuate members of different curvatures.

23. A combination tool as claimed in any preceding claim in which a tool block secured to the base plate co-operates with an opening . through the drive member to define two inclined shearing edges for shearing angle section material.

24. A combination tool substantially as hereinbefore described with reference to and as illustrated in Figs. 1, 2, 3, 4, 5, 8 and 9 or Figs. 1, 2, 3,4, 5, 8 and 9 modified as illustrated in Figs. 6 or 7 or Figs. 10, 11, 12 and 13 of the accompanying drawings.

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Printed for Her Majesty's Stationery Office by the Courier Press, Leamington Spa, 1981. Published by the Patent Office, 25 Southampton Buildings, London, WC2A 1AY, from which copies may be obtained.