US1395194A

US1395194A - Portable radial drills

Info

Publication number: US1395194A
Application number: US291218A
Authority: US
Inventors: Eric G Lindhe
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-04-19
Filing date: 1919-04-19
Publication date: 1921-10-25
Anticipated expiration: 1938-10-25

Description

E. G. LINDH'E.

PORTABLE RADIAL DRILL.

APPLICATION FILED APR. 19. 1919.

Patented Oct. 25, 1921..

2 SHEETS-SHEET I.

ATTORNEY a m L I M 2 u 92 W m J 1 m 5 W Y 2 W, Tm t m .M .0 s L a d 2., E2w m 7 m /2 a M P M 5.1;. LINDHE PORTABLE RADIAL DRILL. APPLICATION FILED APR. 19. 1919.

UNITED STATES.

PATENT orr cs.

ERIC G. LINDI-IE, or YoRK, v. .Y. I

, M roRTABLn RADIAL DRILLS.

To all whom it may concern:

Be it known thatI, ERIC G. LINDHE, a citizen of the'United States, residing in the city of New York,borough of Manhattan, in thecounty and State of New York, have invented a certain new and-useful Improvement in Portable Radial Drills, of which the following. is aspe'cification.

The invention relates to movable apparatus in which a portable drill of the usual electric or analogous type may be mounted and operated, and the main object. of the inventionis to provide such apparatus in a simple economically constructed form with provisions for adjustment and presentation of the. drill-point in all directions with greater accuracy than canbe attained when such drill is directed manually.

Another object is to provide the truck on which the drill'is mounted, with means for locking and leveling to insure stability, and a further object is to supply such'truck with a drill table to permit the" apparatus equipped with a portable drill, to be used as a drill-press.

Another important object is to provide meansfor folding the main'column upon the truck, and for folding the radius arm" upon the column for economy of space in packing for transportation, and for moving the apparatus in situations of restricted height. y

A further object is to, provide a universal adapter-read in which the portable drill is detachably mounted, permitting the portable drill to be removed and used manually when desired. Y 1

The invention consists in certain novel features and details of construction and arrangement by which the above and other objects are attained, to be hereinafter described and claimed. l

The accompanying drawings form a part of this specification and show the invention as it has beencarried out in practice.

Figure lis a side elevation of the com plete machine, with the portable drill shown in outline in dotted lines.

Fig.2 is a corresponding plan view.

Fig. 3 is a front elevation'of the truck alone, 011 a larger scale, showing the leveling and locking means. V

Fig. 4 is a plan view of the forward draft mechanism of the truck.

Fig. 5 is a vertical central section through theforward portion of the truck, showing as usual and adapted to receive and Specification of Letters Patent. Patented Oct, 25, 1921 Application filed April 19, 1919;

Serial No. 291,218;

the lower end of the the hinged base therefor, and partly in elevation. 1

Fig. 6 is a similar view of the upper end ofthe columnand the carrier for theradiusarm.

Fig. 7. is an elevation of the lower portion of the column at its junction with the base, seen at a right angle to Figs. 5 and 6. i

Fig. Sis an end elevation of theradiusarm, showing the universaladapter-head in which the portable drill is carried, and

partly in vertical section.

Fig. 9 is an elevation of one'of the guide rods for supporting the portable drill, showing the supporting bar in vertical section.

Similar letters of reference indicate the same parts in all the figures.

A is the platform ofthe truck suitably ribbed to provide'the required strength and rigidity, supported on low Wheels A A those at the rear A mounted on fixed centers, and those at the front mounted on swiveling brackets A having arms and links connecting the brackets and drawbar m such manner as to permit the truck to be turned in curves of short radius, as war be understood, by means of thetongue A On the upper face of the platform are lugs A and bosses A"; the lugs receive a pin extending transversely through them and a lug B on the hollow vertical base B to form a hinge for" the latter and the bosses are arrangedto support the ends of a bifurcated projection B on the front of the base, in which is secured a swing-bolt A by which the base is firmly, held in the upright position. The upper portion of the base is cylindrical and receives a collar G forming part of a bracket C carrying at its outer end a removable drill-table- C slotted support a piece to be drilled.

In the upper end of the base is firmly vertical column and fixed the tubular standardfor column D eX- tending vertically and surmounted by a cap 1) having a rabbetTd on its under face,

see Fig. 6." The upper face of the base B is' similarly rabbeted at I), see Fig. 5, to form an annular groovein which is received the reduced lower end of a loose rack D the reduced upperend' ofwhich is received in the guided in the rabbets.

' groove. formed by the rabbet (Z. Thus mounted the rack D may move circumfer entially about the column while held and The rack extends through a vertical groove 8 in a carrierE arallel with the'column.

shaped to inclose the column and slide vertically thereon, with the teeth of its pinion E engaged with the rack. The pinion is turned by any suitable means, not shown, in a. casing E on the carrier, operated by a crank E through which the carrier is raised or lowered on the column. The long vertical groove 6 in the carrier supports the rack laterally and carries it around the column as the carrieris rotated on the latter, with the teeth of the pinion always in engagement. It will be noted thatthe rack supports'the weight of the carrier and its connections, and in order to lessen the fric-.

tion of the lower end of the rack upon the fixed base, a roller D is mounted on the outer face of the'rack at the lower end, whidch rides upon. the base and sustains the loa Lugs E on the carrier receive between them a lug E on a laterally extended tubular socket-piece E and form. a hinge therefor upon the pin E and a swing-bolt E engages in a notch ev in. the upper portion of the socket-piece and holds the latter. In the socket-piece E is fixedly set-the tubular radius-armfF extending at a right angle horizontally from the carrier 'E and sup-.

ports the adapter-head in which the portable drill Mis mounted. The hinge at E per-' mits the radius-arm to fold down upon and F is a split tubular slide ,inclosing the radius-arm F, rotatable thereon andclamped.

in position by the bolts F It is provided groove 7, and a pinion Ff turnedv by worm gearing notshown, inclosed in a casing 'F on the sleeve, operated by a handwheel F; a rack G on a cylindrical bar G- slidably mounted in the sleeve, is engaged by the teeth of the pinion F. By turning the handwheel F the bar G is raised orlowered,

as will be understood. At the lower end of the bar G is a collar Gr above which is an adjustable clamp G controlled by thev bolts G r H is an L-shaped bracket disposed horizontally with one; end bolted to the clamp G as at G see Fig. '8, and at the other end at H to a boss J on-a transverse head I J. The outer face ofthe head J is cut away to provide a wide groove or way in which is secured a horizontally disposed rectangular bar J projecting on each side of the head; the overhung ends of the bar J each ,carries a guide J grooved to match to the bar and secured thereto by screws or other suitable means.

Each guide J has a vertical boss or'sleeve J in which slides freely a vertical tubular suspension rod or guide-bar L each ofthe latter terminating in. a head L having a transverse opening Z, see Figs. 8 and 9,

through the head J parallel with the guidein which the arms or handles ,M of the portable electric drill M are securely held, as shown in dotted lines in Fig. 1.

A feed screw J 5 extending vertically bars L L, is operated by a handwheel J and carriesa sleeve J held by a collar J pinned upon the lower end of the screwshaft, see Fig. 8. To the face of the sleeve J 7 is secured a boss J to which the drill shaft, not shown, is attached. The sleeve J and its boss J revolve with the drill shaft, and in the-boss is a hardened disk J which receives the thrust ofthe feed screw. The drillis raised or loweredby the feed screw, the guide-bars. L L serving to prevent rotary movement while sliding freely up or-down in the sleeves J to permit the vertical movement,

' Attached to the rectangular bar J 2 at each overhung end, is a chain N, and the bar is notched on the upper edge as at j to receive and hold the chain in a loop by engaging alink. -The chains may each carry a hook, clamp, or magnet, or other means not shown, forattachment to the piece to be drilled, thus serving to hold the drill firmly to its Work.

Blocks A bolted on the front-of the truck serve as guides for a pair of anchor-bars A of rectangular cross-section, each received in a pair of theblocks, and located one a above the other- Each bar A has a stud V or stop-pin A serving to prevent the complete withdrawal of the bar, and the outer end of each bar carries a vertically disposed with a sleeve F at a right angle,ihaving' a screw R adapted to rest upon and engage the floor and thus steady the platform. The bars draw out oppositely and when thus drawn and'engaged oifera base of large area for the apparatus and permit the plat form A to be leveled.

By loosening the tubular slide F it may be adjusted on the radius-arm F to bring the drill to any required radial position, or 119 above the drill-table C. By rotating the slide F on the radius-arm F the drill may be presented at any angle radially to-the arm. By raising or lowering the carrier E on the column D the radius-arm and its drill may be correspondingly raised or lowered. By'rotating the carrier E on the column D the drill may be swung to any position in the horizontal circle thus described, and the drill-table C may be simi- 12 larly swung. i

In packing for transportation the tubular slide F and its connections are removed by sliding over the free end of the radius-arm F, the latter swungto one side of the 2 column, the swing-bolt E released and the arm folded down alongside the column; the drill-table C removed and the bracket C swung to the side of the column opposite the folded radius-arm. The swing-bolt A is then loosened and the column with its connections folded down on its hinge B to the platform A. The table and head and the removed tongue A? are then arranged on the platform and the whole is ready to be crated for shipment.

The folding feature permitsthe apparatus Any of the usual types of portable drills may be held in the adapter-head and easily and quickly removed therefrom, for service in the hands of the operator. The slight alterations or changes in fittings required for the accommodation of various drills are easily made, or such fittings may be supplied for the best known types.

In holding the portable drill to the work the drill is located in alinement with the point to be drilled and the chains N secured to the piece. The cylindrical bar G is then raised by. the rack G: and pinion F until the chains are taut. The drill is then started and fed down to the'work.

I claim:

1. In an apparatus of the character de scribed, a platform, a column hinged thereto and adapted to fold upon said platform in the direction of the length of the latter, means for holding said column in its vertical operative position, and a radius arm mounted on said column to fold in the direction of the length of the platform.

2. In an apparatus of the character described, a platform, a column hinged thereto and adapted to fold upon said platform in the direction of the length of the latter, means for holding said column to its vertical operative position, and a radius arm mounted on said column to fold in the direction of the length of the platform and having its fulcrum disposed parallel with that of the column, whereby the radius arm when folded will lie parallel with the column.

3. In an apparatus of the character described, a platform, a column thereon, hinged thereto, adapted to fold upon said platform, means for holding said column in the operative vertical position, a radius-arm hinged on said column and adapted to fold thereon parallel therewith, and means for holding said radius-arm in the operative horizontal position.

4. In an apparatus of the character described, a truck, a column foldable thereon in the direction of the length thereof, a drill table carried thereby, a radius arm mounted on said column to fold in the direction ofthe length of the latter, and drillsupporting means carried by the radius arm for supporting a drill mechanism for cooperation with said table.

5. A drilling machine comprising a platform, a column thereon, a carrier embracing said column, anda rack for raising and lowering said carrier movable around said column as the carrier is rotated on the latter. v I v In an apparatus-of the character described, a platform, a column thereon, a

carrier inclosingv said column and rotatable thereon, a rack extended parallel withsaid column and through said carrier to rotate with the latter, arm raising means on the carrierengageable with-the rack and means for holding said rack against endwise movement.

7. In an apparatus of the character'described, a head adapted to receive and hold a portable drill and present the same in position for service, and vertical guiding means supported by said. head and serving to prevent rotary movement of such drill as" it is raised and lowered.

8. In an apparatus of the character (16% scribed,a head adapted'toreceive and hold a portable dull and present the same inposition for service, vertical guiding means supported by said head and serving to pre-- vent rotary movement of such drill as it is raised and lowered, and means for holding the arms of such drill.

9. In an apparatus of the character described, a head adapted to receive and hold a portable drill and present the same in position for service, vertical guidingmeans supported by said head and serving to prevent rotary movement of such drill as it is raised and lowered, and a transverse bar carried by the head and supporting said guiding means.

10. A universal head adapted to be supported on a radius-arm and comprising an adjustable slide rotatable on said radiusarm and carrying a bar arranged transversely of said radius-arm, a clamp encircling said bar and rotatable thereon, and a head carried by said clamp independent of and in a plane offset from said bar for supportin a portable drill.

11. A drilling machine comprising a universal head adapted to be supported on a radius-arm and comprising an adjustable slide rotatable on said radiusarm, a tubular bar arranged transversely of said radiusarm and extending through said clamp, a rack on said tubular bar, and operating means carried by said clamp for engaging said rack, means carried by said clamp for supporting a portable drill, and a feed screw for said drill.

12. In an apparatus of the character described, a head, a transverse bar thereon,

guide-bars slidably mounted on said trans verse bar, means carried bysaid guide-bars forengaging the laterally extended handles of a portable drilhmezins for feeding said portable drill, and chains on said transverse bar for engaging the piece to be drilled and holding said drill to its WOIk.

13. In an apparatus of the character described, a head, a transverse bar thereon,

slidably mounted guide bars on the trans verse bar and having means to engage means on a portable drill, and means carried by said transverse bar to engage the Work to be 'drilled and hold the drill firmly to such l5 I Work.

14. In an apparatus of the character described,a base having an annular rabbet, a

column mounted in said base to extend vertically, a cap on said column having an annular rabbet,,a loose rack engaged at its ends in said rabbet, a carrierencircling said columnoand rotatable thereon, having a vertic'ally, a capon said column having an'annular rabbet, a loose rack engaged at its ends in said r'abbets, a carrier encircling said column and rotatable'thereon, having a 'ver-- tical groove receiving said rack to cause the latter to rotate With said carrier, means on:

said carrier for engaging said rack and raising or lowering said carrier upon said column, anda roller on said rack arranged to ride upon said base. 1 j

16. In an apparatus of the character-described,a cylindrical base,a column mountedthe'rein, a bracket mounted to swing hori zontally on said base,i"afdrill-'table sup ported by said bracket, means carried by said column for supportinga portable drill in operable relation to said table, and a portable drill carried by said meansand mountedto be presented at an angle Ito'said table and maintained-rigidly at such angle.

17 A Wheeled truck, abase hinged there on, and locking means therefor, a column on said base, a carrier on said column,a ra-,

dius-arm hingedtosaid carriertojfoljd parallel with the columrnand means carried by said arm for supporting a drill;

In testimony that Iclaimthe invention above set forth alfix my signature.

ERIC Gr. LINDHE;