Drill guide

Claim 2

A universal drill guide for portable, hand-held drills comprising: housing means, said housing means being removably and adjustably attachable to a portable hand-held drill; externally threaded hollow guide means, said guide means being aligned and supported by said housing means; platform means, axially and transversely adjustable shaft means with respect to said platform means and slidably cooperating with said guide means; spring bias means, said spring bias means being surrounded and enclosed by said guide means, and contacting said shaft means, said spring bias means urging said shaft means to slidably extend from said guide means; stop means, said stop means being threaded on said external threads of said guide means, said stop means adapted to contact said shaft means, thus selectively limiting the slidable movement of said shaft means in said guide means.

Claim 3

The apparatus as recited in claim 1 wherein: said housing means is removably attachable by strap means having therein a plurality of apertures laterally spaced along substantially the entire length of said strap means, said apertures cooperating with a plurality of tabs aligned in a direction parallel to the axis of rotation of a drill bit used in said drill.

Claim 4

The apparatus as recited in claim 1 wherein: said housing means comprises side panels, a front panel, and a rear panel, said side panels held to said front panel and said rear panel by fasteners threaded into said front panel and said rear panel through arcuate slots in said side panels, said front panel and said rear panel being adjustably positionable with respect to said side panels.

Claim 5

The apparatus as recited in claim 1 wherein: said guide means is a hollow substantially cylindrical rod, said rod being threaded along substantially its entire length, and said rod having formed therein a slot extending along its length.

Claim 6

The apparatus as recited in claim 4 wherein: said shaft means has a key at one end, and wherein said key is slidably engaged in said slot when said shaft is coaxially slidably engaged with said guide means.

Claim 7

The apparatus as recited in claim 1 wherein each of said stop means comprises: a threaded adjusting collar, and a threaded locking collar to prevent movement of said adjusting collar.

Claim 8

The apparatus as recited in claim 1 wherein: said adjustable shaft means comprises a main shaft, elbow means, and bracket means, said main shaft slidably cooperating with said guide means, said bracket means terminating at said platform means, said elbow means connecting said main shaft and said bracket means, and said elbow means being threadably adjustable to reposition said bracket means transversely with respect to said main shaft and axially along said main shaft.

Claim 9

The apparatus as recited in claim 1 wherein: said platform means is of a substantially V-shape to accommodate convex work stock.

Claim 10

The apparatus as recited in claim 1 wherein: said platform means is faced with a non-skid, non-mar resilient material.

Claim 11

The apparatus as recited in claim 8 wherein: extenders may be Removably fastened to said platform means to accommodate work stock of large diameters.

Claim 12

The apparatus as recited in claim 1 wherein: handle means is attached to said platform means.

Claim 13

The apparatus as recited in claim 11 wherein: said handle means is removably and angularly adjustable to fit opposing sides of said platform means.

Claim 14

A universal drill guide for portable hand-held drills comprising: a housing means aligning and supporting hollow, substantially cylindrical guide means, said guide means being threaded externally along substantially its entire length, said guide means having a slot formed axially along its length, a main shaft having a key at one end, said main shaft slidably cooperating with said guide means such that said key slidably cooperates with said slot, spring bias means positioned coaxially within said guide means, with one end of said spring bias means abuting closure means at one end of said guide means and the other end of said spring bias means abuting said key, said spring bias means thus urging said key and thus said main shaft axially along said slot toward the work stock to be drilled, stop means threadably adjustable axially along said guide means to act as stops limiting the travel of said key along said slot, elbow means adjustably attachable to the end of said main shaft opposite the end of said main shaft having said key formed thereon, bracket means threadably cooperating with said elbow means and terminating in removably attached platform means.

Claim 15

A universal drill guide for portable hand-held drills comprising: a housing means aligning and supporting hollow, substantially cylindrical guide means, said guide means being threaded externally along substantially its entire length, said guide means having a slot formed axially along its length, a main shaft having a key at one end, said main shaft slidably cooperating with said guide means such that said key slidably cooperates with said slot, spring bias means positioned coaxially within said guide means, with one end of said spring bias means abuting closure means at one end of said guide means and the other end of said spring bias means abuting said key, said spring bias means thus urging said key and thus said main shaft axially along said slot toward the work stock to be drilled, stop means threadably adjustable axially along said guide means to act as stops limiting the travel of said key along said slot, elbow means adjustably attachable to the end of said main shaft opposite the end of said main shaft having said key formed thereon, bracket means threadably cooperating with said elbow means and terminating in removably attached platform means.

Claim 16

The apparatus as recited in claim 13 wherein: said platform means is angularly adjustable for drilling at various angles.

Claim 17

The apparatus as recited in claim 13 wherein: said platform means is of substantially a V-shape to accommodate convex work stock.

Claim 18

The apparatus as recited in claim 15 wherein; said platform means is faced with non-skid, non-mar resilient material.

Claim 19

The apparatus as recited in claim 15 wherein: extender means are removably attachable to said platform means to accommodate work stock of large diameters.

Claim 20

The apparatus as recited in claim 13 wherein: said platform means is transversely adjustable with respect to said bracket means.

Claim 21

The apparatus as recited in claim 13 wherein: said closure means comprises a collar having formed therein a threaded aperture, said aperture receiving therethrough a threaded fastener, said threaded fastener abuting said spring bias means, thereby adjusting the compressive force exerted on said spring bias means.

Claim 22

The apparatus as recited in claim 13 wherein: handle means is attached to said platform means.

Claim 23

The apparatus as recited in claim 20 wherein: said handle means is removably and angularly adjustable to fit opposing sides of said platform means.

Claim 24

A drill guide for portable hand-held drills comprising: a housing formed as an integral part of a portable hand-held drill, said housing aligning and supporting hollow, substantially cylindrical guide means, said guide means being threaded externally along substantially its entire length, said guide means having a slot formed axially along its length, a main shaft having a key at one end, said main shaft slidably cooperating with said guide means such that said key slidably cooperates with said slot, spring bias means positioned coaxially within said guide means, with one end of said spring bias means abuting closure means at one end of said guide means and the other end of said spring bias means abuting said key, said spring bias means thus urging said key and thus said main shaft axially along said slot toward the work to be drilled, stop means threadably adjustable axially along said guide means to act as stops limiting the travel of said key along said slot by contacting said key, and bracket means threadably cooperating with said main shaft and terminating in removably attached platform means.

Claim 25

A drill guide for portable hand-held drills comprising: a housing formed as an integral part of a portable hand-held drill, said housing aligning and supporting hollow, substantially cylindrical guide means, said guide means being threaded externally along substantially its entire length, said guide means having a slot formed axially along its length, a main shaft having a key at one end, said main shaft slidably cooperating with said guide means such that said key slidably cooperates with said slot, spring bias means positioned coaxially within said guide means, with one end of said spring bias means abuting closure means at one end of said guide means and the other end of said spring bias means abuting said key, said spring bias means thus urging said key and thus said main shaft axially along said slot toward the work to be drilled, stop means threadably adjustable axially along said guide means to act as stops limiting the travel of said key along said slot by contacting said key, and bracket means threadably cooperating with said main shaft and terminating in removably attached platform means.

Claim 26

The apparatus as recited in claim 22 wherein: said bracket means comprises elbow means.

Claim 27

The apparatus as recited in claim 23 wherein: said elbow means is axially and transversely adjustable with respect to said main shaft.

Claim 28

The apparatus as recited in claim 22 wherein: said closure means comprises a collar having formed therein a threaded aperture, said aperture receiving therethrough a threaded fastener, said threaded fastener abuting said spring bias means, thereby adjusting the compressive force exerted on said spring bias means.

Claim 29

The apparatus as recited in claim 22 wherein: said platform means is angularly adjustable for drilling at various angles.

Claim 30

The apparatus as recited in claim 22 wherein: said platform means is of substantially a V-shape to accommodate convex work stock.

Claim 31

The apparatus as recited in claim 22 wherein: said platform means is faced with non-skid, non-mar resilient material.

Claim 32

The apparatus as recited in claim 22 wherein said stop means further comprises means to selectively removably retain said shaft within said guide means.