GB2330328A - Jigsaw blade guide and support assembly - Google Patents

Jigsaw blade guide and support assembly Download PDF

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Publication number
GB2330328A
GB2330328A GB9721766A GB9721766A GB2330328A GB 2330328 A GB2330328 A GB 2330328A GB 9721766 A GB9721766 A GB 9721766A GB 9721766 A GB9721766 A GB 9721766A GB 2330328 A GB2330328 A GB 2330328A
Authority
GB
United Kingdom
Prior art keywords
blade
saw
fin
support
blade guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9721766A
Other versions
GB9721766D0 (en
Inventor
John Duffy
Original Assignee
John Duffy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by John Duffy filed Critical John Duffy
Priority to GB9721766A priority Critical patent/GB2330328A/en
Publication of GB9721766D0 publication Critical patent/GB9721766D0/en
Publication of GB2330328A publication Critical patent/GB2330328A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D51/00Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
    • B23D51/02Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of beds; of guiding arrangements for work-tables or saw carriers; of frames
    • B23D51/025Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of beds; of guiding arrangements for work-tables or saw carriers; of frames of arrangements for guiding the saw blade

Abstract

An electric jig saw blade guide and support assembly consists of a support fin 1 which is secured to the body of the saw 2. The support fin connects to the free end of the blade 4 via a blade guide assembly 5 which allows the blade to move in the plane of it's reciprocating motion but prevent lateral movement. As the sawing action progresses the fin passes though the saw cut thus assisting in the maintenance of correct alignment of the saw to the workpiece. The guide assembly 5, eg a roller, may be attached to the saw-blade or the fin.

Description

Electric Jigsaw Blade Guide and Support Assembly This invention relates to an electric jigsaw blade guide and support assembly for use when making straight cuts.
Electric jigsaws are well known tools which are used to cut wood, plastic, laminate and other materials. They consist of a motor powered, open ended saw blade which reciprocates at high speed. The reciprocating action of the blade cuts the workpiece when brought into contact with it and pressure applied. The saw is usually fitted with a plate attachment which serves to provide correct alignment of the saw to the workpiece and assist the user in guiding the saw across the workpiece whilst cutting.
One of the limitations of jigsaws is that it is often difficult to obtain a consistent angle of cut in the plane of the movement of the blade. This arises from the fact that the open end of the blade is unconstrained and can therefore deflect from the required angle of alignment during use. This is particularly true when the material being cut is non-homogeneous in nature.
An example of this is wood which may have hard knots.
According to the present invention there is provided an electric jigsaw blade guide and support assembly comprising a support fin which is secured to the body of the saw or attachment thereof and connects via a blade guide assembly to the free end of the saw blade so as to allow movement of the blade in the plane of it's reciprocating motion and restrict it's lateral movement. As the sawing action progresses the support fin passes through the saw cut.
A specific embodiment of the invention will now be described by way of example and with reference to the accompanying drawing in which Figure 1 shows the side elevation of the invention.
Figure 2 shows the front elevation of the invention.
Figure 3 shows an alternative blade guide assembly.
Figure 4 shows a second alternative blade guide assembly.
Referring to the drawing the jigsaw blade guide and support assembly consists of a thin plate support fin 1 secured to the body of the saw 2. The means by which the fin is secured to the body of the saw is not shown but for example could be bolted via a bracket to the sole plate 3. The support fin is aligned vertically so as to be in line with the saw blade 4 and the line of cut.
Attached to the free end of the saw blade is a blade guide assembly 5. This has a roller 6 which is grooved to engage the front edge 7 of the fin. During operation the roller runs up and down the front edge of the fin whilst providing lateral support to the blade. The support fin trails the blade and passes through the saw cut that is generated thereby assisting in maintaining correct alignment of the saw to the workpiece 8.
Alternative means of effectively connecting the support fin to the blade may be provided.
By way of examples: Figure 3 illustrates a roller assembly 9 secured to the support fin 1, the trailing edge of the blade 4 locates within the groove of the roller 10.
Figure 4 illustrates an arrangement whereby the free end of the blade passes between cylindrical rollers 11 contained within a housing which is secured to the support fin.

Claims (2)

  1. Claims An electric jigsaw blade guide and support assembly comprising a support fin which is secured to the body of the saw or attachment thereof and connects via a blade guide assembly to the free end of the saw blade so as to allow movement of the blade in the plane of it's reciprocating motion but restrict it's lateral movement. As the sawing action progresses the support fin passes through the saw cut.
  2. 2 An electric jigsaw blade guide and support assembly substantially as described herein with reference to figures 14 of the accompanying drawing.
GB9721766A 1997-10-15 1997-10-15 Jigsaw blade guide and support assembly Withdrawn GB2330328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9721766A GB2330328A (en) 1997-10-15 1997-10-15 Jigsaw blade guide and support assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9721766A GB2330328A (en) 1997-10-15 1997-10-15 Jigsaw blade guide and support assembly

Publications (2)

Publication Number Publication Date
GB9721766D0 GB9721766D0 (en) 1997-12-10
GB2330328A true GB2330328A (en) 1999-04-21

Family

ID=10820537

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9721766A Withdrawn GB2330328A (en) 1997-10-15 1997-10-15 Jigsaw blade guide and support assembly

Country Status (1)

Country Link
GB (1) GB2330328A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2466384A (en) * 2008-12-22 2010-06-23 Bosch Gmbh Robert Guiding device for a compass saw
US8033026B2 (en) 2007-09-21 2011-10-11 Black & Decker Inc. Adjustable and removable keel assembly and blade guide for a jigsaw
ITCS20100010A1 (en) * 2010-06-18 2011-12-19 Alberto Leonetti MULTI-PURPOSE SAFETY SAW WITH GUIDED BLADE
US8578615B2 (en) 2011-09-12 2013-11-12 Black & Decker Inc. Jigsaw with deployable keel and tiltable shoe
US9827623B2 (en) 2007-09-21 2017-11-28 Black & Decker Inc. Control of reciprocation speed and orbital magnitude of a jigsaw with a plurality of material and/or task descriptive icons
US9844823B2 (en) 2007-09-21 2017-12-19 Black & Decker Inc. Jigsaw with cutting angle indicator in jigsaw housing assembly
US9899899B2 (en) 2013-10-25 2018-02-20 Black & Decker Inc. Handheld power tool with compact AC switch
US10029322B2 (en) 2007-09-21 2018-07-24 Black & Decker Inc. Housing of a cutting tool including blade storage, integral blade guard and motor ventilation pathway

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4213242A (en) * 1979-01-22 1980-07-22 Partington Everett J Attachment for saber saw
US5644847A (en) * 1995-04-07 1997-07-08 Scintilla Ag Compass saw

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4213242A (en) * 1979-01-22 1980-07-22 Partington Everett J Attachment for saber saw
US5644847A (en) * 1995-04-07 1997-07-08 Scintilla Ag Compass saw

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8033026B2 (en) 2007-09-21 2011-10-11 Black & Decker Inc. Adjustable and removable keel assembly and blade guide for a jigsaw
US9827623B2 (en) 2007-09-21 2017-11-28 Black & Decker Inc. Control of reciprocation speed and orbital magnitude of a jigsaw with a plurality of material and/or task descriptive icons
US9844823B2 (en) 2007-09-21 2017-12-19 Black & Decker Inc. Jigsaw with cutting angle indicator in jigsaw housing assembly
US9981327B2 (en) 2007-09-21 2018-05-29 Black & Decker Inc. Cutting angle indicator in jigsaw housing with dust extraction
US10029322B2 (en) 2007-09-21 2018-07-24 Black & Decker Inc. Housing of a cutting tool including blade storage, integral blade guard and motor ventilation pathway
GB2466384A (en) * 2008-12-22 2010-06-23 Bosch Gmbh Robert Guiding device for a compass saw
ITCS20100010A1 (en) * 2010-06-18 2011-12-19 Alberto Leonetti MULTI-PURPOSE SAFETY SAW WITH GUIDED BLADE
US8578615B2 (en) 2011-09-12 2013-11-12 Black & Decker Inc. Jigsaw with deployable keel and tiltable shoe
US9899899B2 (en) 2013-10-25 2018-02-20 Black & Decker Inc. Handheld power tool with compact AC switch

Also Published As

Publication number Publication date
GB9721766D0 (en) 1997-12-10

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)