US1895990A

US1895990A - Hand drill

Info

Publication number: US1895990A
Application number: US468667A
Authority: US
Inventors: Harcharick Emro
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-07-17
Filing date: 1930-07-17
Publication date: 1933-01-31
Anticipated expiration: 1950-01-31

Description

Jan. 31, 1933. E. HARCHARICK HAND DRILL Filed July 17, 1930 Z-Sheets-Sheet 1 133 120 fi/maimvcm A llomey Jan. 31, 1933. E, HARCHARICK 1,895,990

HAND DRILL Filed July 17,1930 2 Sheets-Sheet 2 A llorney UNITED STA 1 mo momma, or WILKES-BARBIE, PENNSYLVANIA HAND D3111.

Application: flled Jul 17,

This invention relates to new and useful improvements in hand drills, breast drills and similar manually operated drills as distinguished from power driven machine drills, and more particularly itpertains to a new and novel mechanism for supporting the drill in operative position relative to the work operated upon thereby. i c

It is one of the objects of the invention to provide meansfor supporting a drill rigidly in true operative position whereby to increase the eiiiciencyof the drill, and insure accuracy of the work-performed thereb It is .a further object of the invention, so to construct the device that it may be used in connection with any type of drill.

- It is afurther object of the invention to provide means whereby the drill may be adj ustably secured to the device.

It is a further object of the invention to provide means associated with'the device for securely holding the work operated upon by the drill.- I

A still furtherobject of the'invention resides in means for yieldably supporting the drill relative to-the work, and also in means" for adj ustably mounting saidfresilient means in order that the drill may be properly supportedjwith respect to the work operated 3011011 I With the above and other objects in view "which will appear as the nature of the invention is better understoodfrefereme is had to the accompanying drawings in which, 9 Figure 1 is a view in elevation of a device constructed in. accordance with invention, 7

Figure 2 is a longitudinal sectional view taken onthe line2 2 of Figure 1,

Figure 3 isa horizontal sectional view taken on the line 3+3 of Figure 1,

Figure 4 is a perspective view of a device constructed in accordance with the invention, the drill being removed therefrom, and;

Figure 5 is a detail view partly in section and partly in elevation showing the specific construction of the device.

Referring more particularly to the draw- 5 ings, the device comprises a base or foot 10, and said base or foot 10 is provided with a the present 193th. Serial e. 468,667.

body portion 16' cut out as at 17 in order to render the same of lighter construction. Thebody portion 16 carries a plurality of. ears 18 preferably extending at right angles to the body portion, and said ears 18 are .per-

forated for the receptionof the'standards 13 as more clearly illustrated in Figure 5.

Carried by each of the standards 13, and positioned between the perforated ears 18 of; the drill carriage 15,there is a collar 19, and these collars are adapted toxbe secured to theirrespective standards 13 againstmovements relative thereto by set screws. or the like 20." Mounted or resting upon each of the collars 19, there. is a coil spring 21 and as more clearly illustrated in Figures 1 and 4,.the upper ends of these coil springs 21 are adapted to engage the under face of the upperlugs18 of the drill carriage 15. By this means, it will be apparent that the drill carso riage 15 is yieldably? supported upon the standards- 13, since its weight rests upon the springs 21. Movement of the drill carriage 15 in the direction of the base 10, will place the coil springs 21 under compression, and these coil springs 21, will serve to return the -drill carriage 15 to its normal or initial position upon relieving the pressure thereon.

The drill carriage 15 is providedwith aplurality of

elongated slots

25 and 26, and mounted in these slots, and secured to the drill carriage 15 by means of

wing nuts

27 and 28 respectively, there are two means 29 and 30which are adapted for engagement with ahand drill, breast drill or similar tool, r

to secure the same to the drill carriage 15. The securing means 29 preferably'comprises abolt 30 mounted in the slot26, and said bolt has a head 31 which is adapted to pass through the shank 32 of the drill as best wing nut 27 is mounted upon this screw threaded shank 37. By this means, a drill may be secured in the drill carriage in the manner illustrated in Figures 1 and 2, and when secured in place the drill will be rig- 15 idly carried by the drill carriage 15 which as heretofore stated is yieldably supported upon the coil springs 21.

From the foregoing description, it will be apparent that with a drill mounted in the drill carriage 15 as described, the drill is movable towards and away from the base member 10, and that it is moved in the direction of the base member 10 by pressure applied to the drill, and will be automatically moved in the direction away from the base member 10 by the springs 21 which are compressed as the drill is moved toward the base member 10. The base member 10 is provided with an opening through which the bit 41 '3 of the drill passes in operation.

The collars 19 heretofore mentioned are adjustably mounted upon the standards 13, and by this arrangement, it will be apparent that the downward movements of the drill 35 carriage 15 may be determined by the position of the collars 19, since when the springs 21 are placed under full compression, the carriage 15 can no longer move in the direction of the base 10 and thus an adjustment of the collars 19 will limit the movement of tihe carriage 15 in the direction of said base Means is provided to secure the work against movement relative to the base 10 dur- 45 ing operation thereon, and in the present embodiment of the invention, this means is illustrated as an arm 45 slidably mounted as at 46 upon one of the standards 13. This arm 45 is provided with a wing nut 47 by means of which it may be secured in position upon the standards 13, and as will be noted, the arm 45 has movements both longitudinally and circumferentially of the standard 13 upon which it is mounted.

If desired, a subbase 50 may be employed,

and in the present illustration, this sub base includes angle irons such as 51 beneath which the base 10 is adapted for engagement as illustrated in the drawings. By this means,

protection to the bit 41 as it passes through the work and the opening 40 is provided.

From the foregoing, it will be apparent that the present invention provides a new and novel means for supporting a hand drill press 95 drill or similar tool in operative position, and

that said means provides for accurate and efficient work of the tool. Furthermore it will be apparent that the device is capable of use in connection with any type of hand drill, breast drill and similar tool without necessitating any change in construction of the device. 7

While the invention has been herein illustrated in what may be termed a preferred form, it is to be understood that the invening a plate of arcuate shape in cross section,

and having a pairof outwardly extending ears at each end thereof, said earsbeing pro vided with openings through which the up rights pass,'a collar adjustably connected to. each upright and located above a lower ear,

springs on the uprights having their lower ends engaging the collars and their upper ends contacting the upper ears, the arcuateshaped part of the said plate having ver-' tically arranged slots therein, drill holding members located in the space formed by the concavity of the plate and having threaded shanks extending through the slots, nut members on said shanks, for clamping the holding members in adjusted position in the slots. 2. A drill holder comprising a plate-like base, a pair of socket members connected to the upper face of said base, a pair of rods having their lower ends fitting in the socket members, set screws for holding the said lower ends in said socket members, a carriage of substantially arcuate shape in cross section, upper and lower pairs of cars extending outwardly from the ends of the carria e and having openings therein through which the rods pass, a collar adjustably connected to each rod and located above an ear of each lower pair, springs on the rods havin their lower ends contacting the collars anc their upper ends contacting the upper ears, adjustable means carried by the carriage and extending into the space formed by the arcuate portion ofthe carriage for holding a drill, and a sub'base having guideways thereon for receiving the edges of the first-mentioned base.

In testimony whereof I affix my signature.

EMRO HARCHARICK.