US2453995A - Portable pneumatic drill supporting and handling rig - Google Patents

Description

Nov. 16, w48., y R. E. LEE 2,453,995

PORTABLE PNEUMATIC DRILL SUPPORTING AND HANDLING RIG Filed June 9. 1945 /3%5RT LEE Patented Nov. 16, 1948 PQRTABLE-PNEUMATIC DRILL SUPPORTING' AND HAN DLIN Gl B1G- Robert. E. Lee, Bel-lilower, Calif., assigner to .lohn Thomas, Norwalk, Calif.

Application .lune 9, 1945, Serial No. 598,553

(Cl. `'l-7-59 2 Claims. 1

lIheupresent invention relates to a novel and improved 1 one-man .rig for; conveniently and effectively suspendingla conventional pneumatic drill, .this ina ,manner to facilitate maneuvering and manipulating the drill and to expedite the drilling of holes in a given fplate or-sheet of metal. The principal object of the invention, as the preceding statement of the invention implies, is to provide a practicable and suitably constructed rig characterizedf'by alever-ysaid lever-being adjustabl-yi'mounted on a relatively stationary support and provided with an adjustable adapter fixturev so constructed as to permittthe shaft of the drill to be appropriately attached to and suspendedtherefrom, whereby to'permit said drill to be moved about and Vproperly positioned in relation to the work', and then safely and satisfactorilyfheld in the selected position for expeditious and reliable drilling purposes.

Another object of the invention is predicated upon a rig which can be quickly set up for use, transported from place to place and operated by one man, thus permitting the user to drill resultfully more holes than three or four men could do, employing methods and devices now commonly used.

A further object'l of the invention has to do with a highly adaptable and readily usable rig susceptible of accommodating plates and sheets which are too large to be `,put under ordinary drill presses and punches.

Having in mind increased production and other attending factors, a rig constructed in accordance with the principles of this invention insures safety to the user and avoids injuries which often occur when the pneumatic drill breaks through a plate and spins, as happens when pursuing present-day drilling practices.

Other objects, features and advantages of the invention will become more readily apparent from the following description and the accompanying illustrative drawings.

In the drawings, wherein like numerals are emrployed to designate like parts throughout the views:

Figure l is a perspective View showing a rig of a one-man type constructed in accordance with the principles of this invention, and illustrating how it is set up for use, how it is associated with the conventional drill, and how the drill is set for drilling operations.

Figure 2 is a vertical sectional view taken approximately on the plane of the line 3 3 of Figure l, looking in the direction of the arrows.

Reference being had now to the drawings, and

2 particularly toy Figure 1, it will be observedthait. the work'orplate to be drilled is denoted bythe. reference character A, while the conventional,A` pneumatic drill is denoted by theV referencelcharacter D.'

rEhe-,lever is denoted by the numeral 5 and. come; prises an elongated wooden or equivalent bar., which is preferably rectangular in crossetsecti'on, and whichiisormedat its left-hand .endmvith a suitable. hand-.grip Theaopposite yend thereof. is secured to' an adjusting ,and-anchoring. bracket l. This bracketis provide-d withsa fringaor'collar 8 slidably and rotatably surrounding -a supportingi postf'9, said postnbeing provided .at itslowerf end with an appropriate foundationor foot I0 which` is. fastenedv ,(notfzshown). `in anyV suitableV manner toy the work or at. a pointnear the Work. The bracket "I fisilpreferably bifurcated, and/'an endv portion of. the-.lever is fastened'rasat VI I, between they l iurcations=- I 2*; The aforementioned. post or. standard Sis provided with upper vand-lower as=l sembling and retainingscollars I3 andflhthese being bolted in lplace, as at l5. It is sometimes desired, instead of bolting the collars, simply to secure them by set-screws. Either method of fastening the collars I3 and I4 to the post is permissible. But the main idea is to have collars on opposite sides of the adjusting collar 8 of the bracket l.

An adapter fixture, which serves :as a hanger and suspension means, is provided, and this is generally denoted by the numeral I6. It is characterized by a channel-shaped clip I1, this having an appropriate hand-grip IIa at one end. The

side ilanges embrace and slidably coa-ct Ywith the longitudinal edge portions of the lever, as is obvious. Secured to the intermediate portions of the side flanges (see lFig. 3), as at the points I9, ,are duplicate depending, suitably shaped hanger limbs 26. A substantially T-shaped fitting I8 is provided, this to accommodate the upstanding shaft or stem on the drill D, said tting having pins or journals 2i suitably mounted and fastened in the lower end portions of said limb. The numeral 22 designates spacing sleeves interposed between the body portion of the fitting Vand. inner surfaces of said limbs. The upper end of the stem of the drill is threaded to accommodate a nut 23, which has a suitably shaped cap 24 and the underside of the lever rests and rides thereon. Thus, the xture I6, with its companion parts, constitutes a suitable hanger or bracket for the drill and shiftably mounts said drill on said lever.

The adapter xture, so called, is such as to permit the drill to be readily moved back and orth lin relation to the lever, this in order Ito accomplish desired operations with ease and de pendability.

As is evident from the drawings, I am yconcerned primarily with the handle-equipped lever, the adapter d-evice I5 for adjustably saddling and suspending the'drill from the lever, and means for adjustably attaching the inner end of the lever to a portable, appropriately lsupported post or equivalent support, the lever being vertically adjustable and also rotatable in respect to the vertical axis of the post, and the drill being hung from and moved in unison therewith, whereby to promote speedier drilling results and permitting the single user to accomplish as much if not more than three or four men pursuing the usual drillingl practices.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

l Minor changes in the shape, size and arrangement of details coming within the field of invention claimed may be resorted to in actual practice, if desired;

, `IA-claim:

1. As a component .part of the assemblage of the class described, an elongated channel-shaped clip embodying a horizontal web and vertical side ilanges, an upstanding handle attached to and risingffrom one end portion yof said web, said clip being adapted to be shiftably mounted on a horizontal supporting and maneuvering lever, hanger limbs adju-stably and Idetachably connected to and depending from said side flanges, and means for adjustably supporting a conventional drill be- Itweenthe lower ends of said limbs, said means including a horizontal pin and an adjustable nut, said 'nut' having a head adapted to ride and rest against the underside of the lever.

2. In a portable drill rig oi' the class described, a lever adapted to assume a horizontal .position and provided at its outer end with a handle and at its inner end with means for horizontally swingable and vertically adjustable connection with a vertical supporting post, the central body portion of said lever being substantially rectangular in cross-sectional form, an elongated inverted channel-shaped clip aligned and tted in direct Contact with and slidable on the rectangular portion of said lever, a pair of spaced parallel limbs attached to and depending vertically from the side flanges of said cli-p, a pin mounted horizontally between the lower ends of said limbs, Said pin being spaced below, at right angles to said clip and centrally apertu-red, and a conventional drill having an upstanding stem extending through and upwardly beyond 4the said aperture between said limbs, the upper end of said stem being provided with an adjusting nut shiftably engageable with the underside of said lever and said clip being provided at one end and on its upper side with an upstanding shifting handle.

ROBERT E. LEE.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 415,198 Hein'bach Nov. 19, 1889 1,023,921 Brown Apr. 23, 1912 1,101,966 Schoenky June 30, 1914 1,763,552 Cook June 10, 1930 FOREIGN PATENTS Number Country Date 336,900 Great Britain Oct. 23, 1930

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