US2727412A

US2727412A - Drill holder and support therefor

Info

Publication number: US2727412A
Application number: US348367A
Authority: US
Inventors: Merrel E Hatcher
Original assignee: Individual
Current assignee: Individual
Priority date: 1953-04-13
Filing date: 1953-04-13
Publication date: 1955-12-20
Anticipated expiration: 1972-12-20

Description

Dec. 20, 19 55 M. E. HATCHER DRILL HOLDER AND SUPPORT THEREFOR 2 Sheets-Sheet 1 Filed April 15, 1953 Merre/ E. Hafcher INVENTOR.

BY WW 3M 0, 1955 M. E. HATCHER 2,727,412

DRILL HOLDER AND SUPPORT THEREFOR Filed April 13, 1955 2 Sheets-Sheet 2 WW Z? United States Patent 0.

DRILL HOLDER AND SUPPORT THEREFOR Merrel E. Hatchet, Richland, Wash.

Application April 13, 1953, Serial No. 348,367

1 Claim. (Cl. 77-7) This invention relates to new and useful improvements in drill holding devices and the primary object of the present invention is to provide a drill holding and supporting device, whereby the armature shaft of an electric drill may be retained in either a vertical or horizontal position.

Another important object of the present invention is to provide a spring raised guide to which a drill holder is secured, which guide may be moved vertically down ward toward work disposed thereunder.

A further object of the present invention is to provide a drill holder and support therefor involving spring means acting on the guide to retain the guide raised and also functioning as a locking means that will yieldingly retain the guide in a horizontal position.

A still further aim of the present invention is to provide a drill holder and support therefor that are simple and practical in construction, strong and reliable in use, small and compact in structure, efiicient and durable in operation, inexpensive to manufacture, and otherwise well adapted for the purposes for which the same is intended.

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 side view partly in elevation and partly in section showing the drill supported in a vertical posinon;

Figure 2 is a front elevational view of Figure 1;

Figure 3 is a plan view of the holder removed from the support and with the drill secured to the holder;

Figure 4 is a plan view of Figure 1 and showing the drill disposed in a horizontal position; and

Figure 5 is a side elevational view of Figure 4 and with dotted lines showing the drill holder in its adjusted position.

Referring now to the drawings in detail, wherein for the purpose of illustration, there is disclosed a preferred embodiment of the present invention, the numeral represents an elongated substantially rectangular base having a support 12 suitably fixed to one of its ends. The support 12 includes a pair of vertical fixed rod sec tions 14 secured to said base 10 and relatively shorter upper rod sections 16 of the same diameter as the fixed rod sections 14. The upper ends of the sections 14 are bifurcated and receive the reduced lower ends of the sections 16 which are pivoted thereto by transverse pins 18 Y C mbined tension and compression springs 24 are disposed within the tubes 20. The upper ends of the springs .24 a e u ably secured by r n v r pins. 1.3 or h like t9 th upp r end a l of h u des 20 and th lowe ends of the springs 24 are suitably secured to the upper ends of sections 16 by transverse pins 15 or the like, whereby the springs will retain the guide forming guides 20 raised on the support 12 while permitting lowering of the guides 20 on the support 12.

A substantially rectangular drill holder or holding member 26 is provided with a pair of vertical bores 28 at one end that slidably receive the guides 20. Set screws 30 threadingly carried by the member 26 engage the guides 20 to retain the member 26 longitudinally adjusted on the guides 20.

The upper face of member 26 is provided with a countersunken recess or seat 32 accommodating the forward end 34 of an electric drill 36 and permitting the chuck 38 of the drill to project beyond the member 26. A U-shaped clamp bracket 40 is slipped over the rear end of the drill.

Base 10 is formed with an aperture or guide hole 44 that faces the chuck 38 so that a drilling tool 46 gripped by the chuck 38 can engage work resting upon the base or disposed under the base.

In practical use of the present invention, the guides 20 together with the upper rod sections 15 may be swung on the pins 18 into a vertical position so that the guides 20 may be urged downwardly to bring the tool 46 into engagement with work. In this position of the upper rod sections 16 and guides 20 the springs 24 are compressed by and yieldingly support the weight of the guides 20 and holder 26 on the upper ends of the fixed rod sections 14, and the guides 20 are slid downwardly by the weight of the load over the upper ends of the fixed rod sections 14 and over the ends of the pivot pins 18 to lock said upper rod sections 15 and the guides 20 in vertical position, all as best shown in Figure 1.

When it is desired to apply butfing, grinding sanding heads or the like to the armature shaft of the drill, the guides 20 are pulled upwardly until their lower ends clear the pivot pins 18 and the upper ends of the fixed rod sections 14 to unlock said upper rod sections 16 and said guides 20 and tension the springs 24, then, the guides 20 and the upper rod sections 16 are swung to a horizontal position, as shown in Figure 5, and springs 24 will urge the open ends of the guides 20 against the fixed rod sections 14 to retain the guides 20 horizontal. Holder 26 is moved against the fixed rod sections 14 so that chuck 38 overhangs the base 10 so that a tool gripped by chuck 38 will clear the base.

What is claimed as new is as follows:

In a drill holding device, a base, a vertical fixed rod section secured to said base, a transverse pivot pin in the upper end of said fixed rod section with ends flush with opposite sides of said fixed rod section, an upper rod section shorter than the fixed rod section and of the same diameter swingable on the pivot pin into vertical position above the fixed rod section, a tubular guide sleeved onto the upper rod section for swinging therewith into vertical position and sliding downwardly over the same and the upper end of the fixed rod section and said pin to lock said upper rod section and guide in vertical position, said guide being slidable upwardly on said upper rod section clear of said fixed rod section and pivot pin to unlock said upper rod section and the guide, said upper rod section and guide when unlocked being swingable downwardly in unison into horizontal position, an elongated drill holder mounted at one end on said guide and swingable downwardly by downward swinging of said upper rod section and guide, and a combined tension and compression spring in said guide compressed by and gieldingly supporting the'weight of said guide and holder 7 on the upper end of the fixed rod section when said upper rod section and guide are in vertical position, said spring having its ends attached to said upper rod section and to'said guide for tensioning of said spring by upward one side of the fixed rod section for locking said upper rod section and guide in horizontal position.

References Cited in the file of this patent UNITED STATES PATENTS Higgins Apr. 5, 1892 Neuwelt June 29, 1926