US 2909083 A
Description (OCR text may contain errors)
Oct. 20, 1959 o. CHESTNUT DRILL PRESS STAND ATTACHMENT Filed June 15, .1958
1N VEN TOR.
' provements in drill 2,909,083 DRILL PRESS STAND ATTACHMENT, Isaac 0. Chestnut, San Jose, Calif. Application June 13, 1958, Serial No. 741,774 1 Claim. (Cl. 77- 19) The present invention relates to new and useful impress stands and has for its primary object to provide, in a manner as hereinafter set forth, novel means for rendering such stands universally adjustable.
Another important object of the invention is to provide a drill press stand attachment of the character described comprising unique means for firmly securing the various adjustments.
Still another important object of the present invention is to provide an attchment of the aforementioned character which may be readily incorporated in conventional drill press stands without the necessity of altering the same structurally.
Other objects of the invention are to provide a drill press stand attachment of the character set forth which will be comparatively simple in construction, strong, durable, compact, of light weight and which may be manufactured at low cost. I
These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:
Figure 1 is a view in side elevation, showing an attachment embodying the present invention in use;
Figure 2 is a perspective view of the device per se;
Figure 3 is a view in side elevation of the device with the upper portion thereof broken away in section, showing said device mounted on the base or table of the drill stand;
Figure 4 is an enlarged view in horizontal section, taken substantially on the line 4-4 of Figure 3; and
Figure 5 is a perspective view, showing a modified form of the invention.
Referring now to the drawing in detail, it will be seen that reference character 6 designates generally a conventional drill press stand. The stand 6 comprises a base or table 7 which includes the usual vertical sleeve or socket '8 in which the column or post 9 is usually secured through the medium of a setscrew .10. Reference character 11 designates a conventional drill press on the post 9, said press having-clamped thereon a portable electric drill 12, the tool 13 of which is engageable with the work on the table or base 7, as indicated at 14. The drill press 11 includes the usual feed '15.
The embodiment of the present invention which has been illustrated in Figures 1 to 4, inclusive, of the drawing comprises lower and upper members or sections 16 and 17, respectively, of suitable metal. The attachment is adapted to be interposed between the base 7 and the post 9 of the drill stand 6. Toward this end, the lower member 16 includes a stem 18 which is adapted to be inserted in the socket or sleeve 8 in lieu of the post 9 and secured in adjusted position through the medium of the setscrew 10. At an intermediate point, the stem 18 2,909,083 Patented Oct. 20, -9
. 2 a has formed-therein a circumferential groove 19 for the recep-tion of the setscrew 10. The stem '18 is further provided with a pair of'flat, longitudinal channelsv20 which interrupt the groove 19. As shown to advantage in Fig 'ure 2. of the drawing,
the channels are at right angles to each other and ;are adaptedtoreceive the setscrew it! for selectively securig the attachment in either of two predetermined positions. The lower section or member 16 of the attachment further includes a laterally ofiset segment 21 which is integral with the upper end of the stem 18, said segment 21 being provided on its periphery with a scale 22.
The other section or member 17 of the attachment comprises a socket 23 in which the post 9 is removably and adjustably secured by a setscrew 24. A laterally offset segment 25 on the lower end of the socket 23 is in faceabutting engagement with the segment '21. The segment 25 is journalled for swinging adjustment on a countersunk bolt 26 in the segment 21. A hand nut 27 is threaded on the bolt 26 for securing the adjustment. A washer 28 is interposed between the nut 27 and the seg ment 25. The adjustment is further secured and the assembly stabilized through the medium of a pair of set screws '29 which are threadedly mounted in the segment 21 and engaged with the segment 25 on opposite sides of the pivot bolt 26. An annular groove or channel 30 is provided in the face of the segment 25 in which the setscrews 29 are engaged.
It is thought that the use of the device will be readily apparent from a consideration of the foregoing. Briefly, the stem 18 is inserted in the sleeve or socket 8 of the stand 6 and secured through the medium of the setscrew 10. The post 9 is then inserted in the socket 23 and secured by the setscrews 24. By loosening the setscrew 10 the post 9 with the drill press 11 thereon may be rotated in a complete circle to any desired position. As hereinbefore stated, the flat channels 20 in the stem 18 which receive the setscrew 10 facilitate rotary adjustment to either of two predetermined postions. By loosening the nut 27 and the setscrews 29 the post 9 may be swung in a vertical plane'to the desired position, as suggested in full and dotted lines in Figure 1 of the drawing. The scale 22 facilitates setting the post 9 at the desired angle or inclination. The segment 25 is provided on its periphery with marks 31 to be read against the scale 22.
In the modification of Figure 5 of the drawing, reference character 32 designates a lower section or member comprising a split clamp or sleeve 36 for attachment to the drill press stand base or table. Reference character 34 designates generally an upper section or member mounted for swinging adjustment on the lower member 32 and comprising a split clamp or socket '35 for the reception of the post 9. In other respects this form of the invention is substantially similar to the embodiment of Figure 2 of the drawing.
The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.
What is claimed as new is as follows:
An attachment for mounting a post of a drill press stand for universal adjustment on a base of the type including a vertical sleeve and a setscrew threadedly mounted therein, said attachment comprising a stern mounted for rotary adjustment in the sleeve, a pivot bolt mounted horizontally on the upper portion of said stem, a socket journaled for swinging adjustment in a vertical plane on said pivot bolt and adapted to rotatably adjustably receive the post, a nut threaded on said pivot bolt for securing the socket in adjusted position, and a setscrew threadedly mounted in the socket for securing the post in adjusted postion, said stem having longitudinal channel's therein forrthe reception of the first named setscrew; said channels including flat bottom walls extending at an angle to each other for receiving said first named setscrew ,thereon for positively securing the stem in predetermined rotatably adjusted postions, said stem further having a circumferential groove therein intersecting the channels for receiving the first named setscrev v for re taining the stern in the sleeve while said stem is being rotatably adjusted.
References Cited in the file of this patent UNITED STATES PATENTS 2,587,520 Peplow Feb. 26, 1952 2,768,663 Jones Oct. 30, 1956 2,802,380 Fossheim Aug. 13, 1957