|Publication number||US2855679 A|
|Publication date||14 Oct 1958|
|Filing date||8 Nov 1955|
|Priority date||8 Nov 1955|
|Publication number||US 2855679 A, US 2855679A, US-A-2855679, US2855679 A, US2855679A|
|Inventors||Howard G Gibble|
|Original Assignee||Howard G Gibble|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (8), Referenced by (63), Classifications (9)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Oct. 14, 1958 H. G. GIBBLE GAGE ATTACHMENT FOR DRILLS Filed NOV. 8, 1955 FIG.
INVENTOR HOWARD G. GIBBLE ATTORNEY United States Patent 2,855,619 GAGE ATTACHMENT FOR DRILLS Howard G. Gibble, Mount Joy, Pa. Application November 8, 1955, Serial No. 545,659 Claims. (Cl. 33-46) This invention relates to a visible gage for indicating the position of an electric drill when boring a hole.
In the use of an electric drill for boring holes in wood or metal, it is diflicult in the hand operated type to be sure that the drill is normal to the surface in which the hole is being drilled. It is, of course, possible to hold an angle against the surface and hold the drill parallel to that angle. As this should be done in two planes intersecting at right angles, it is a very ditficult job to be sure that the drill is in the correct position by this mechanical means.
The object of the present invention is to provide a simple visible means of assuring the user that the drill is held normal to the surface in which the hole is being made.
It is a further object of the present invention to provide I a visible circle of lighted dots around the hole to be made which, if the drill is held normal, represents a circle and which upon the slightest inclination of the drill from the normal will indicate an oval.
It is a further object to provide a built in chamber housing a parallel light bulb which will emit rays of light through a series of holes arranged in a circle around the drill so that a series of parallel spots is directed onto the surface to be drilled, said circle to be maintained concentric with the hole being drilled assure vertical drilling.
The invention is illustrated in the accompanying drawing in which:
Figure 1 is a side elevation partly in section of a drill showing the gap device as an attachment to be clamped over the end of the drill.
Figure 2 is an end view of the device shown in Figure 1.
Figure 3 is a detail showing the invention as built into the drill.
Figure 4 is a representation of the pattern of light spots as shown on the surface to be drilled when the drill is normal to that surface.
Figure 5 is a pattern of light spots as shown when the drill is held in a position which is in normal to the surface to be drilled.
Referring particularly to Figures 1 and 2, a hand drill 8 with the usual grip 9, trigger 10 and chuck 11 is shown with the chuck centered on the motor casing. It is, of course, possible to make the attachment for those drills where the chuck is not centered on a motor casing.
A casing 12 formed of sheet metal and having a slot 13 is adapted to fit over the end of the drill 8 and to be held in position by a screw 14 and wing nut 15 engaging the extended ears 16.
The forward end of the casing is bent to form the housing 17 for a circular light bulb 18 connected to a source of electricity by the cord 19 and operating on the same current which operates the motor. The forward wall of the housing 17 is formed with a series of circular holes 19 concentric with the chuck 11. Directly in front of the light bulb 18, a partition wall 20 having holes 21 similarly arranged to the holes 19 serves to direct the rays of light to produce a distinct pattern without distortion on the workpiece.
Referring particularly to Figure 3, the motor casing 22 of a drill similar to that shown in Figure l is provided with screw threads 23 to receive a casing 24. The front wall of this casing is provided with holes 25 similar to the holes 19 of Figure l and the casing is provided with a light bulb 26 similar to the light bulb 18. A similar partition 30 directs the light rays through the holes 31. The
difference between the form shown in Figure 3 and Figure 1 is that Figure 3 is built into the casing of the drill while Figure l is an attachment which may be secured to the outside of the drill.
In using the drill the bulb 18 will light upon the plugging in of the drill and the drill positioned as shown at 28 in Figure 4. A series of illuminated spots 29 will be shown concentric with the drill on the surface which is being drilled when the drill is held in a position normal to said surface. Should the drill be held as shown at 30 in Figure 5, the spots of light 31 will form an oval ring around the hole being drilled which is at once apparent to the eye and by tilting the drill in the right direction the circle of light dots can be made concentric.
It will thus be seen that this forms a quick visible gage by which the user of an electric drill can assure himself that the hole being drilled is at right angles to the surface in which it is being drilled.
What is claimed is:
1. An attachment for a hand held electric drill comprising a casing formed with a plurality of spaced pairs of holes arranged in a circle concentric with the drill, a light source in said casing to direct the rays of light through said holes to provide a circular gauge pattern of light spots on the surface being drilled.
2. An attachment for a hand held electric drill comprising a casing formed with spaced partitions, each with a plurality of holes arranged in circles concentric with the drill, a circular light source in said casing to direct the rays of light through said holes to provide a circular gauge pattern of light spots on the surface being drilled.
3. An attachment for a hand held electric drill comprising a casing formed with a plurality of holes arranged in a circle concentric with the drill, a light source in said casing, means between said light source and said holes to screen all except rays of light substantially parallel to said drill, whereby a sharp clear image of lighted spots in the form of a circle when the drill is perpendicular to the surface being drilled is projected on the surface of the work being drilled.
4. An attachment for a hand held electric drill comprising a casing formed with a plurality of holes arranged in a circle concentric with the drill, a light source in said casing, a shield interposed between said light source and said holes to screen all except rays of light substantially parallel to said drill, whereby a sharp clear image of lighted spots in the form of a circle when the drill is perpendicular to the surface being drilled is projected on the surface of the work being drilled.
5. An attachment for a hand held electric drill comprising a casing formed with a plurality of holes arranged in a circle concentric with the drill, a light source in said casing, a shield formed with a plurality of holes equal in number and concentric with the holes of said casing and in alignment therewith, interposed between said light source and said holes to screen all except rays of light substantially parallel to said drill, whereby a sharp clear image of lighted spots is projected on the surface of the work being drilled.
References Cited in the file of this patent UNITED STATES PATENTS 1,601,354 Elverson Sept. 28, 1926 1,826,004 Key Oct. 6, 1931 1,958,456 Warren May 15, 1934 2,072,286 Wellington Mar. 2, 1937 2,525,588 Cameron et al. Oct. 10, 1950 2,659,824 Burnham Nov. 17, 1953 2,670,427 Barlet et al. Feb. 23, 1954 FOREIGN PATENTS 842,835 Germany July 3, 1952
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1601354 *||27 Jun 1923||28 Sep 1926||Pressed Steel Car Co||Perforating device|
|US1826004 *||1 Jun 1929||6 Oct 1931||Leonard S Lyon||Night sight for firearms|
|US1958456 *||19 Mar 1930||15 May 1934||Norman Apollonio||Fight level indicator for aircraft|
|US2072286 *||7 Dec 1935||2 Mar 1937||Wellington Barrett R||Projecting device|
|US2525588 *||12 Dec 1946||10 Oct 1950||Cameron Leroy F||Illuminated electric drill and the like|
|US2659824 *||12 Jan 1949||17 Nov 1953||Robert C Brown Jr||Position indicating means for x-ray projectors|
|US2670427 *||12 Feb 1951||23 Feb 1954||Barlet Stewart J||Illuminated screw driver|
|DE842835C *||21 Mar 1950||3 Jul 1952||Hans Honnef||Leuchthalter mit Lippenstift oder Schreibgeraet|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3906640 *||19 Aug 1974||23 Sep 1975||Sosa Hector M||Drilling alignment device for electric hand drills|
|US4078869 *||17 Jan 1977||14 Mar 1978||Honeycutt Damon P||Two-way right angle drill|
|US5412546 *||20 Jul 1994||2 May 1995||Huang; Chen S.||Power wrench|
|US5473519 *||9 Mar 1995||5 Dec 1995||Ingersoll-Rand Company||Light ring for power tools|
|US5525842 *||2 Dec 1994||11 Jun 1996||Volt-Aire Corporation||Air tool with integrated generator and light ring assembly|
|US5611797 *||26 Jul 1995||18 Mar 1997||Virginia C. George||Combination handpiece and surgical laser tool|
|US5801454 *||10 Jun 1996||1 Sep 1998||Leininger; Jon J.||Air tool|
|US6328505 *||27 Mar 2000||11 Dec 2001||Howard Gibble||Drill guiding device|
|US6559405||12 Jun 2001||6 May 2003||General Electric Company||Positioning device for welding electrode|
|US6565227 *||13 Nov 2001||20 May 2003||Greg Davis||Method and device for tool alignment|
|US6890135||24 Aug 2004||10 May 2005||Credo Technology Corporation||Power tool with light emitting diode|
|US6898860 *||13 Nov 2003||31 May 2005||Chervon International Trading Co. Ltd.||Auxiliary handle with a laser alignment device for drills|
|US6937336||15 Aug 2002||30 Aug 2005||Black & Decker, Inc.||Optical alignment system for power tool|
|US7073268||23 Dec 2003||11 Jul 2006||Black & Decker Inc.||Level apparatus|
|US7080964 *||26 Aug 2003||25 Jul 2006||Credo Technology Corporation||Tool chuck having a light transmitting capability|
|US7094011||31 Mar 2005||22 Aug 2006||Credo Technology Corporation||Power tool|
|US7131180||7 Jan 2004||7 Nov 2006||Credo Technology Corporation||Attachment for power tool|
|US7137327||23 Nov 2004||21 Nov 2006||Black & Decker Inc.||Riving knife assembly for a dual bevel table saw|
|US7185998 *||17 Jan 2003||6 Mar 2007||Hitachi Koki Co., Ltd.||Power tool|
|US7243440||6 Oct 2004||17 Jul 2007||Black & Decker Inc.||Gauge for use with power tools|
|US7290474||29 Dec 2004||6 Nov 2007||Black & Decker Inc.||System for rapidly stopping a spinning table saw blade|
|US7346847||31 Jul 2003||18 Mar 2008||Black & Decker Inc.||Power tool control system user interface|
|US7359762||23 Apr 2004||15 Apr 2008||Black & Decker Inc.||Measurement and alignment device including a display system|
|US7369916||1 Oct 2004||6 May 2008||Black & Decker Inc.||Drill press|
|US7854054||6 Oct 2006||21 Dec 2010||Robert Bosch Tool Corporation||Attachment for power tool|
|US7926398||19 Apr 2011||Black & Decker Inc.||Cutter with optical alignment system|
|US7934847||3 May 2011||Hitachi Koki Co., Ltd.||Power tool with light unit|
|US7992311||9 Aug 2011||John Cerwin||Rotary boring tool alignment and depth indication system|
|US8004664||23 Aug 2011||Chang Type Industrial Company||Power tool control system|
|US8026456||27 Sep 2011||Illinois Tool Works Inc.||TIG welding system and method|
|US8317350||27 Nov 2012||Black & Decker Inc.||Power tool with a light for illuminating a workpiece|
|US8328381||25 Feb 2009||11 Dec 2012||Black & Decker Inc.||Light for a power tool and method of illuminating a workpiece|
|US8517558||19 Oct 2011||27 Aug 2013||Hitachi Koki Co., Ltd.||Power tool|
|US8820955||2 Jul 2013||2 Sep 2014||Black & Decker Inc.||Power tool with light emitting assembly|
|US8827483||14 Sep 2012||9 Sep 2014||Black & Decker Inc.||Light for a power tool and method of illuminating a workpiece|
|US9028088||19 Jul 2012||12 May 2015||Black & Decker Inc.||Lighted power tool|
|US9242355||17 Apr 2012||26 Jan 2016||Black & Decker Inc.||Illuminated power tool|
|US9328915||25 Jan 2013||3 May 2016||Black & Decker Inc.||Lighted power tool|
|US20040032587 *||15 Aug 2002||19 Feb 2004||Garcia Jaime E.||Optical alignment system for power tool|
|US20040093749 *||13 Nov 2003||20 May 2004||Shuming Wu||Auxiliary handle with a laser alignment device for drills|
|US20050025599 *||24 Aug 2004||3 Feb 2005||Credo Technology Corporation||Power tool with light emitting diode|
|US20050047878 *||26 Aug 2003||3 Mar 2005||Credo Technology Corporation||Tool chuck having a light transmitting capability|
|US20050081364 *||7 Jan 2004||21 Apr 2005||Credo Technology Corporation||Attachment for power tool|
|US20050132589 *||21 Dec 2004||23 Jun 2005||Johnson Robert F.||Visual alignment aid for handheld tools|
|US20050157489 *||17 Jan 2003||21 Jul 2005||Katsuhiro Oomori||Power tool|
|US20050166741 *||31 Mar 2005||4 Aug 2005||Credo Technology Corporation||Power tool|
|US20060112581 *||1 Dec 2004||1 Jun 2006||Bernhard Nortmann||Alignment guide for a power tool|
|US20070022595 *||6 Oct 2006||1 Feb 2007||Credo Technology Corporation||Attachment for power tool|
|US20070030486 *||8 Aug 2005||8 Feb 2007||Daniel Gelbart||Laser centering jig|
|US20070159812 *||23 Feb 2007||12 Jul 2007||Katsuhiro Oomori||Power tool|
|US20080169277 *||14 Nov 2007||17 Jul 2008||Illinois Tool Works Inc.||Lighted welding torch|
|US20080197116 *||4 Jan 2008||21 Aug 2008||Illinois Tool Works Inc.||Tig welding system and method|
|US20090256319 *||9 Apr 2009||15 Oct 2009||Seymour Daniel R||Quick change chuck with led lighting|
|US20090260239 *||22 Oct 2009||John Cerwin||Rotary Boring Tool Alignment and Depth Indication System|
|US20110199756 *||18 Aug 2011||Katsuhiro Oomori||Power Tool|
|USRE36917 *||30 Nov 1998||17 Oct 2000||Volt-Aire Corporation||Air tool|
|EP1384091A2 *||22 Feb 2002||28 Jan 2004||Toolz, Ltd.||Detecting tool orientation alignment depth and leveling|
|EP2511049A1 *||17 Jan 2003||17 Oct 2012||Hitachi Koki Co., Ltd.||Power tool|
|EP2687338A1 *||17 Jul 2013||22 Jan 2014||Black & Decker Inc.||Lighted Power Tool|
|WO1999002310A2 *||8 Jul 1998||21 Jan 1999||Avos Developments Limited||Illumination for power tools|
|WO1999002310A3 *||8 Jul 1998||1 Apr 1999||Avos Dev Ltd||Illumination for power tools|
|WO2007141081A1||19 Apr 2007||13 Dec 2007||Robert Bosch Gmbh||Hand-held machine tool with means for perpendicular alignment|
|WO2008088643A1 *||17 Dec 2007||24 Jul 2008||Illinois Tool Works Inc.||Welding torch with a light source for aligning and positioning the welding torch|
|U.S. Classification||33/286, 408/241.00G, 408/16, 362/119|
|Cooperative Classification||B25F5/021, B25H1/0092|
|European Classification||B25H1/00C5C, B25F5/02B|