US2647420A

US2647420A - Ratchet-type drill

Info

Publication number: US2647420A
Application number: US264506A
Authority: US
Inventors: Jay W Stallings
Original assignee: JAY B LINKER
Current assignee: JAY B LINKER
Priority date: 1952-01-02
Filing date: 1952-01-02
Publication date: 1953-08-04
Anticipated expiration: 1970-08-04

Description

.1. w; STALLINGS 2,647,420

RATCHET-TYPE DRILL 5 Sheets-Sheet l age.

Filed Jan. 2, 1952 1953 w. STALLINGS 2,647,420

RATCHET-TYPE DRILL Filed Jan. 2, 1952 s Sheets-Sheet 2 u 4,1953 J. w. STALLINGS 2,647,420

RATCHET-TYPE DRILL Filed Jan 2, 1952 s Sheets-Shet s Patenteci Aug. 4, 195 3 UNITED STATES PATENT OFFICE Jay W. Stallings, Harrisburg, N. 0., assignor of four-fifths to Jay B. Linker, Milwaukee, Wis.

Application January 2, 1952, Serial No. 264,506

2 Claims.

This invention relates to improvements in drills and more particularly to ratchet type drills for use particularly where the drill press cannot be used due to lack of space or for other reasons. The drill is adapted for use principally as a hand operated drill, as well as for use in lathes, etc.

A further object is to provide a ratchet type drill adapted for use principally in close quarters, that is compact in assembly, positive and efficient in operation and that is free from play, lost motion and wobble when in use.

This and any and all other and more specific objects hereinafter appearing are attained by, and the invention finds preferable embodiment in, the mechanism hereinafter particularly described in this specification and illustrated in the accompanying drawings, wherein:

Fig. 1 is a view in elevational perspective and partly in axial section of a ratchet type drill in accordance with the invention.

Fig. 2 is a view similar to Fig. 1 but rotated to a position at right angles to that figure.

Figs. 3, 4 and are horizontal cross-sectional views taken substantially along the lines 3-3, 44, and 5-5 of Fig. 2, respectively.

Fig. 6 is a view in perspective of a drive collar employed.

Fig. "I is a View in perspective of a type of drill chuck employed.

Fig. 8 is a view of a slightly modified form of drill chuck, mainly in axial section, that may be employed.

Fig. 9 is a horizontal cross-sectional view through Fig. 8 on the line 99.

Fig. 10 is an axial sectional view of a further modified form of drill chuck and. jack screw, a drill being shown in the chuck.

Fig. 11 is a view similar to Fig. 10 but rotated to a position at right angles thereto.

Fig. 12 is a top plan view of Fig. 10, and

Figs. 13 and 14 are horizontal cross-sectional views taken substantially along the lines l3-i3 and l4-I4 of Fig. 11.

Like reference characters denote corresponding parts throughout the several views.

Referring now to Figs. 1 to 9 inclusive the reference numeral I denotes a tapered drill chuck having a tapered bore 2 and a hexagonal head 3, the head having a hole 4 at right angles to the axis of the chuck to receive a conventional drift (not shown) for removal of the drill 5 from the chuck, the head formed interiorly with a flat sided recess 6 registering with the hole 4 to receive the fiat end of certain taper-shank drills, this recess serving to prelar 8, said collar being hexagonal in contour throughout a portion of its extent, the head 3 of said chuck formed with a perforation ii axially thereof and registering with the hole 4, said perforation V-shaped from I a point It, spaced a short distance from the hole 4, to the adjacent face of said head, said perforation 9 receiving the center ll of the head portion E2 of the drive screw I3 received in the square hole l in drive collar 8, said head i2 received directlyup-on said chuck head 3.

The head I2 of the drive screw it is formed in short spaced relation to its free terminal with a socket M for the spring ball retainer assembly, the ball portion thereof riding releasably in the annular V-shaped recess [6 formed in the inner wall of said collar 8 in spaced relation to the socket l at such point that with the center 4 of the drive screw it received in the V-shaped portion of perforation 9 said spring ball retainer will be disposed in the recess l6.

A portion of the head [2 ofthe drive screw [3 extends beyond the collar 8 and is formed with a socket I! for the spring ball retainer assembly IS, the ball portion of which rides in the V- shaped annular recess E9 in the ratchet wheel 20 of the ratchet 2! having the pawl 22 and reversing lever 23, said ratchet having a handle 24 for use by the operator. The feed screw [3 includes a stem 25, square threaded, and receiving the knurled feed nut 25 having pin holes 27 and a center 28. In operation the invention may be conveniently used in lathe work for drilling jobs by using the hexagon headed drill sleeve l for holding either taper or straight flat side-shank drills and placing the center in the hexagon head on the lathe stock center, after having placed the ratchet 2! over the hexagon head and having removed parts i2 and 2E, and chucking the work to be drilled in the lathe chuck. The ratchet and handle 2i, 2d are used to prevent the drill from turning while the lathe work is turned and the tail stock screwed into the work, this being a decided improvement over conventional tools for this type of lathe drilling work. However if it is desired a more simple application of the invention can be used in lathe drilling work, in which event the entire assembly may be used as shown in Figs. 1 and 2, the lathe tail stock center having been removed and the hand nut center 28 placed in the lathe stock cenvention may be set up and used with thesovca-lledi Old Man, with an angle bar for turning. the

jack screw to force the drill in-tothe work a'nd' metal or wood spacers may be used'to properly space the assembly between thejacktsupport andi the centered hand nut 26. With the assembly in I proper order the drilling is accomplished by turning the drill sleeve and drill by means of the hand ratchet while keeping the feed nut tightened. by hand. It will be noted that the assembly is so arranged as to semi-automatically feedthe drill into the work through friction-on the" hand nut which-tends-to lengthen out or feed in the assemblyas the'ratchet" is-rotated clockwise, threads in'the nut being-counter to the direction ofratchet rotation. v

InFig's: a-and 9a-slightlymodifiedform of drill chucks 29 is shown having a straight shank with hexagonal head 30; the shank formed with a straight bore 31 which extends into the hea'd'and there is reduced to form-the contracted portion 32i'the'bore 3] being formed'withone flatside 33; the bore 3| receiving straight fiatside drills with the'shank receive'din the contracted bore-32, the entrance tothe bore 32" being round to receive a drift toe'ifect" removal of'the drill when desired, the chuck'sh'ank '29 having threadedwall perforatibnsflj 3'5each to receive a headless screw 35 for engagement with'the drill to retain same posi tively' in the chuck.

In Figs. 10 through 14' a ratchet operated drill ispr'ovidecl foruse in connection'with'the ratchet mechanism shown in the preceding figures. A drive c'oll'ar "having a cylindrical body portion 31 having drifthole 37 and closed at one end' and there'havinga square drive head 3'8'-withcenter 38 i's'received"in theratchet 2] and secured by springb'all39'isprovided', the bo'dyhaving its bore formed with left hand box-type threads 40 longi tudinally of the driver, said threads meshing with the threads of the chuck 4| to permit adjustment of said members. Four keyways 42 are formed in the chuck 4| for the key 43 operative by the handle 44 fulcrumed to the drive member 31, a spring 45 secured to said member yieldingly retaining said key inzlocking engagement with said chuck to cause cooperation of said membersto rotate the drill 46. Conventional operation of the ratchet' will cause rotation of the drill intermittently.

It'iwillbe obvious to those skilled in the art that various changes may be made in my device without departing, from the spirit of the invention and'therefore I do not limit myself to what is" shown in the; drawings and described in the specification, but only as indicated by the appended" claims.

What is claimed is:

1-. Iir-a'ratchet-typ'e drill, a'-diive-collar having a socket portion and an annular" V-recess in spaced relationthereto; a drill chuck received in saidsocket; a dl'lVe* SClieW received in saiddrive collarand formedwi'th'spaced sockets, a ratchet having an annular XI-recessed; spring ball retain'er assembly connecting the socket portionsof said drive screw and the V-recesse's of said drive collarand" said ratchet, said drivescrew having acenter'received in" said drill chuck, and a feed nut carried by said drive screw.

2. In a ratchet typ'e' drill, athreadedcylindrical drivec'ollar closed atone end,.athrea'ded"drill chuck received insaid' drive-collar and having a key-way; a key'carri'ed'by saiddrivecollar yieldingly disposed in sa'id'key way, a drive head at one end of said drive collar andhaving a socket portion, a ratchet'about said drive headformed with an annular \r-recess, and a spring ball retainer assembly connecting said V"-recess"and the socket 'po'rtioniof said drive collar;

JAY W. STALLINGS.

References Cited in the file of this patent UNITED STATES PATENTS- Number Name Date 539,423 Emig May 21:; 1895 613,759 Coep'er 'Nov. 8, 1-898