US3382987A - Screw gauge and drill stand - Google Patents

Description

May 14, 1968 R. BAGIAN ETAL.

SCREW GAUGE AND DRILL STAND Filed July 5, 1966 M h M 5W D M H m United States Patent O 3,382,987 SCREW GAUGE AND DRILL STAND Richard Bagan and Joseph Zierau, both of @6x-19 Britton Ave., Elmhurst, N.Y. 11373 Filed July 5, 1966, Ser. No. 562,781 1 Claim. (Cl. 21.1--69) ABSTRACT F THE DISCLOSURE A screw gauge and drill stand for rapidly determining the appropriate body and top drills for various screw sizes and providing convenient storage for said drills.

This invention relates to a combination screw gauge and drill stand as used by mechanics and the like.

The principal objects of this invention is to provide a new and improved combination screw gauge and drill stand which stores removably a collection of drill bits and enables the user to select a proper tap drill size and body drill size as well as a proper tap for a given diameter hole.

Another object is to provide a new and improved combination screw gauge and drill stand for the character indicated which can be manufactured easily and inexpensively.

All of the foregoing and still further objects and advantages of our invention will now be described with reference to this specification and to the accompanying drawings wherein:

FIGURE 1 is a perspective view of our invention;

FIGURE 2 is a view through 2-2 in FIGURE 1;

FIGURE 3 illustrates a step in using our invention; and

FIGURE 4 illustrates another step in using our invention.

Referring now to FIGURES 1-4, there is shown a vertical plate like elongated member having a hole 12 at the top end thereof which can be used in detachably securing the member to a wall or other supporting surface. Member 10 has a at vertical center section 14 with flat vertical side sections 16 extending away from the section at oppositely directed acute angles A thereto.

Section 14 contains four columns, the first and second columns at the left having a common heading Screw or Tap Size, the third column being headed Tap Drill, the fourth column being headed Body Drill. The first column carries a plurality of pairs of numbers (i.e. two numbers separated by a hyphen) arranged vertically, with the set of rst numbers in these pairs being arranged in ascending order, the set of the second numbers being arranged in descending order. The second column con# tains a plurality of threaded holes 18 arranged vertically one below the other. The number pair in the same row with a particular hole identities the screw or tap size for this hole. The third column contains a plurality of tap drill sizes arranged in descending order, each tap drill size being that of the threaded hole in the corresponding row. The fourth column contains a plurality of body drill sizes arranged in descending order, each body drill size being that of the threaded hole in the corresponding row. Note that each hole has an unthreaded portion 20 of given diameter (known as the pilot hole) followed by la threaded portion 22, the inner thread diameter being the requisite tap drill size, the outer thread diameter being the requisite body drill size. I

Each side section 16 carries a plurality of drill sizes arranged in ascending order in the left hand section and in descending order on the right hand section. Each section carries aligned with each drill size a corresponding drill hole or bore 24 oriented to extend upward from the side section and outward from the center section and side section. A drill 26 of proper size is detachably positioned in each one of holes 24.

Our invention can be employed to drill a threaded hole for example for use with a given screw 2S. To this end, the screw is tted into one and another of holes 18 until a hole of proper size and thread is found on member 10. The reading in the corresponding entry in i the first column in the same row will give the size of mit the user to select and remove the appropriate drills from the side sections. These drills and tap can then be used to drill and tap the right size hole.

While we have described our invention with particular reference to the drawings, our protection is to be limited only by the terms of the claims which follow.

Having thus set forth and disclosed the nature of this invention, what is claimed is:

1. A combination screw gauge and drill stand comprising a vertical plate-like elongated member having a front flat vertical center section with oppositely disposed front side sections extending away from the center section at oppositely directed equal acute angles, each side section having a plurality of drill holes, said holes being disposed vertically one below the other, each hole being oriented to extend upward from the corresponding side section and a plurality of differently sized drills equal to the total plurality of holes in both side sections, each drill being detacbably stored in a corresponding one of said drill holes, the two edges of said center section adjacent said side sections bearing vertically displaced numbers each identifying a different one of the drill sizes, each drill being disposed horizontally 4adjacent the number identifying its drill size wherein said center section contains a plurality of vertically spaced tapped holes of ditferent diameters arranged in a column including an additional column containing a like plurality of indicia arranged in vertically spaced relation each indicia horizontally aligned with the corresponding tapped hole and identifying size for this hole, including a third column containing a like number of vertically spaced indicia each aligned horizontally with the corresponding tapped hole and identifying the tap drill size and a fourth column containing a like number of vertically spaced indicia, each aligned horizontally with the corresponding tapped hole and identifying the body drill size thereof.

References Cited UNITED STATES PATENTS 1,104,650 7/1914 Fries 2l 1-69 X 1,246,536 11/1917 Bristol 211-69 2,260,086 10/1941 Matter 211--69 2,267,008 12/1941 Zimmer 211-69 FOREIGN PATENTS 234,195 6/ 1925 Great Britain.

CHANCELLOR E. HARRIS, Primary Examiner.

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