US1481054A - Multiple-speed driving mechanism for drilling machines - Google Patents

Description

Jan. 15 1924. 1,481,054 W. R. FOX

MULTIPLE SPEED DRIVING MECHANISM FOR DRILLING MACHINES Filed April 29, 1922 2 Sheets-Sheet I 10 Inventor.-

PVzZliam 12.17000,

Ali-Z 4".

Jan. 15 1924. 1,481,054

w. R. FOX

MULTIPLE SPEED DRIVING MECHANISM FOR DRILLING MACHIN ES' Filed April 29, 1922 2 Sheets-Sheet 2 7 J7 J Z 5 /J6 J5 -I E 2 I C 7 i A 1'- Z6 A Q l- 4 Y1 A :1 a a 1 3 I //)x! m Zea; 1 I k J9 Y W V 1 V A k. j/ W Jnvnior:

Williazn .3. Fox,

Patented Jan. 15, 1924.

T e-D ST 1575i titan fr YFFl CiEtf With-Harm? For;or zm xspa mcnieaa, Assume reroxi ranonrn nnonrhnyi or Jackson; Mien-rem; A CORPORATION OF MICHIGAN.

MTJ'LTIPLE SIEED nnrvrne MECHANISM FOR- DRILIJNG' Marcrrrnns;

Application filed April 29, 1922. Serial no. 557,327.

To "all whom it may czmce m Be it known that L WILLIAMR. Fox, a citizen of the United States, and resident of Jackson, the county of J ackson,;in the State of Michigan, have invented certain new and useful Improvements in Multiplespeed Driving -Mechanism for Drilling Machines, of which the following is a specification.

y invention relates to multiple drilling machines and particularly-"to the change gear multiple speed driving mechanism for ,the spindles which are connected with the dr lltools; I aimto provide a rugged'constructionofsimple and economical form, and one which will permit the attendant to change the gear drive quickly.

Other objects of the invention will appear from the followingvdescription;

Inthe accompanying drawing?- Fig; 1 is a central vertical section through the gearbox, with the gearing associated therewith; I

Fig.2 isa plan view of part of the mechanisnrof ig. 1;

Fig. 3"is a vertical modifiedconstruction; I 1

Fig. t'is a detail, and F i-g. 4 is a plan of same,

Sand 6 are views of'other forms of the invention.

sectional View of a In these drawings 1 indicates the. im'a-indrive shaft whichis 'arranged centrally oft a casing or gear box A; This shaft carrieskeyetl thereto, a master gear member Zh'aving a plurality of rings of teeth 2 and 2 of difierent diameters, the gear ring .of greater diameter being lowermost and; presenting-an uppersurtace onledge 2 extending beyond the periphery of the gear ring 2. anti friction bearings are arranged at 1 and- 1 for the shaftll I At points spaced apart around the master gear spindles 3.'are= located these spindles being connectedwith suitable flexible shaft-j in-g (not shown) through universal joints so jthat'the. tools carried in the lower ends of the" flxibleshafting, may bedriven from the spindles 3- when these are rotated; These spindles 3 are provided with'key ways, to

receive interchangeable pinions', the high speedv pinion 6'being adapted to mesh with the lower gear ring? of larger'diameter,

andithesepiiiions .;6*are each provided with a knob or'hand'le-portion 6 'reach1ng-up' Suitable in the key-way of the spindle and the pinion itself will be stopped inthe proper position byrestingupon the ledge 2 ot the master gear. This low speed pinion is readily, ac-i cessible upon removingfthe cover 8;;as itjis located high on the spindle end closeloeneath the cover member, and it willf be noticed also that the high speed pinion 6;.is readily accessible because its knobyportion lies close below the lower face of the cover member. t

The high speed pinion rests upon a collar at which is pinned: to .thespin'dle 3, and'this collar serves tohold the spindle in proper position because it rests upon abearing-on. the bottom 8 of the gear, casing. Each of these spindles'is provided withjsucha collar for holding it in place. i The cover member 8 is readily removable and various means may be provided for attaching-this cover member to the gear casingi One of these means is shown as consisting of, a nut 10 threaded upon a'screw stud 10 extending; up from the gear casing, but instead of this construction, a cap screw'lO may be em ployed in connection with a U-shaped Washer 10 This cover member is provided with bearings for the shaft 1, andalso vtor the upper ends of the spindles 3. When it islifted from the casing the upper ends of the spindles are exposed so that the pinions may be removed by drawing them upwardly along the spindles, and in placing. the pins member 8 with bearingsfor the upper ends" of the spindles, I may, as- 'shown in Fig.-:3', provide in addition to thelow'er bearings8 in the bottom member of the casing, bearings at 12 formed in an intermediate parti-.

tion a of the casing. Further, instead of providing in the cover a hearing such as 1 in Fig. 1 for the main drive shaft, I may provide a bearing at 12 in the intermediate partition, so that the cover is entirely free from bearings for the spindles and main drive shaft.

The cover member, when lifted up for the removal or re-placing of any of the gears, can be held in its elevated position in any suitable manner.

Any one of the pinions can be removed and its spindle then will be idle.

In driving means of the general type de scribed, it is desirable to have the small pinion as small as possible in order to secure high speed of the spindle and at the same time it is desirable to have a rugged construction. Therefore, in making the connection between the small pinion and its shaft, I avoid making a key-Way through the pinion back of the teeth, as this would materially weaken the pinion structure, but

instead form the key-way in the upper extension of the pinion which furnishes the handle or knob. The key is shown at 14.. This is provided with an end extending at right angles to the main part of the key and riveted into body of the knob or handle.

Referring to Fig. 5 this shows a main cover 8 doWelled to the main casing at 15, and provided with a plurality of openings 16, one for each spindle, through which the pinions may be lifted out individually and others inserted, without disturbing the main 'cover 8. This construction will permit access to the pinions individually, instead of collectively, as in the first form, and any pinion can be changed for another one without removing the main cover. Each of these openings may have its own cover as shown at 17 and these may simply rest in place or may be attached in any suitable manner.

As shown at 6 the knob of this modificationmay be provided in the form of a plug held by a pin 18 in the upper flanged part 19 of the pinion, so that when the pinion is in place the plug 6 will rest upon the upper'end of the spindle and thus support the pinion on the spindle alone instead of allowing the pinion, as in the first form, to rest either upon the collar 4 or other hearing, or upon the upper side of the master gear. A knob such as described may be provided for each pinion, large or small.

Referring to Fig. 6, I provide covers 17 for the openings in the main cover through which the pinions may be lifted out individually. This form of cover will have bearings for the upper ends of the spindles. They may be fixed in position in any suitable way. They have sockets 17* by which they may be lifted out and the larger pinions may have sockets at 19 by which they may be lifted out. The smaller pinions may have knobs as shown.

\Vhile I have shown a two speed drive it will be understood that this illustrated ing them no fastening devices need be manipulated, but on the contrary, the pinions.

are simply lifted out of place. While I have shown certain forms of the devices only in one figure of the drawings it will be understood that where these forms are susceptible of use in the other figures, they are to be regarded as shown there. Thus the depressions in the upper surface of the pinions shown in Fig. 6 may be used in the. pinion 7 of Fig. 1, or the partition a of Fig. 3'may be used in any of thefother forms, or the feature of supporting the pinions on the upper ends of the spindlesm'ay-be employed in Fig. 1 and'Fig. 3.

It will be understood that the description and drawing forming parts of this specifi cation are presented byway of illustration of the underlying features or principles of the invention, and-are not to be regarded as restrictive upon the scope thereof, the latter being defined by the accompanying claims.

Only one pinion occupies a spindle at one time. The rings of gear teeth can be located as close together, one under the other, as gear cutting practice will permit, and thus the height and Weight of the gear chest is kept down to a minimum and further weight is also kept down because those pinions which are to be idle are removed from the gear chest.

In some previous form of"gea.r chest where the high and low speed pinions are united in one body in pairs and are shifted to position, one pinion section out of mesh and the other companion plniou section in mesh relative to their respective master gear rings, these rings must be separated by a space greater than the depth of a pinion so that when one section of a pinion is in mesh with its corresponding gear ring, the other section of the pinion" will be occupying the said space, where it remains'idle, and'this space must be of suflicient depth to accommodate the pinion section. Iclaim: I 1. In a drilling machine a drill spindle,"a

main driving shaft, a-mast'er gear thereon having multiple rings of gear teeth of different diameters with that of the larger itesi toesidiameter lower-most; and pinions of diiferent diameters to vbe slipped: vertically ontoaor o'fl' from the -spindleat its npperen the downward movement of the i-nionsbeing L removable pii-nionsoff: dif'fQn'e'n-tdiameters which may be dropped freely; into place on said spindles from the top of -the casing the downward movement ofth'e pinions b'e inglimited to mesh with-the proper gear rings, only one pinion occupyinga spgindle at one time, substantially as {described 3. In 'combination'in' a: mtrltiple dril li-ng machine, a multiple speed driving meek anisni for the drill spindlesyoomprising a casing, a main drive -shaft;a mjasterqgear thereon having multiple "rings-d gear teeth of different diameters with thew-gear ring oflarger diameter lowermost, series of spindles'ior' driving the tools arranged-about the master gear ancl' bearing'inathecasing,

and interchangeable pinions" of different diameters to be removabfly mounted ,upon the spindles, to "be slipped on or i oft there: from at their upper' ends, the-"said iinions resting in plaeeby ravityuanrlbetng-im dividu'a'lly "freely removable," the pinion of small diameter being limited -w-h'en" dropped freely along the same, to mesh with 'the large diameter gear ring, andthe pinion: of large diameter being-F limited-- in its-down: ward movement to mesh h the gear ring of small diameter; only one pinion' occupv ing a spincl le'at onetime;substantially as described.

l. In combinationin -:a multiple drilling machine, a' multiple speed -driving meet: anismfor the drill spindles; comp singia casing, a main driving shaft, a master ear thereon having multiple rings of gear 'jtee'th' of different i diameters, a series of disposed at di iierent 'points around the mas ter gear for driving 'the tools,' said spindles bearing in the casing, :low' speed inions: to be removably mounted on the spi ndles and limited in their downward movement slippedthere'on to an upper position in respect thereto to mesh with the gear ring of small diameter, and high speed pinions to be remova'bly mounted on the spindles and limited in' their downward movement when slipped thereon to mesh with the gear ring of larger diameter, said high speed pinions having knobs or handle portions reaching upwardly therefrom, whereby the pinions maybe lifted off from the tops of the spindlesponly one pinion occupying-i spindle; at onetime; substantially as de}- :serilied; i v

5. In combination in a multip'le dri'l ling machine;- a multiple speed g'meeh- :anisni for the drill 'spindlesg eoinprising a ica's isn'gg amain" "ving shaft, a'inasterigear thereon I having -u'p per ring'ofgear teeth, and: lower: it of gear teat-not greater diiameter than the 'upper earr mg, spindle-s arranged at difi'e-rent points aeo'ur theafiaseer gear; bearings i n the easing for saidspindles, collars-fixed to the spindles for bearing- 0h 11a part Offth fixedeasing structure to hold the spindles in proper position,high speed pinions -removable and re-p laceaible in respect 'to the f-spindle's for slipping "them off or onto the' upper'ends of the spindles,- said high speed prinions resting -1 upon the "collars and} having knobsz-or-"handles extending up wardly, andlOW- speed pinions also removable from and "r-pl'a'e'eable onto the spindles at the upper ends" thereof, sirbs'tant ia llv as described. v

6. combination, a casing, acentral drive shaft; a master gear thereon ha viiig ri-ngssof teeth of different diameters," a spind learranged alongside of the master gear, i nterohangeable high and low speed pi o adapted to bedropped: freelyinto p thereon, the low speed pinion" beingfli-inited to 'a sposition at the-upper end ofthe'spindl, and Y the high speed pinion having I a knob or handle reaching upwardl therefrom; said high speed pinion when' slipped-oiito the spindle" being limited in its dow ward movement to mesh with the large diameter gear only, and said low speed inion-when slipped onto' "th'e=sp indle meshing with-the small diameter" gear ring, only} one inion occupying "the Y spind'le a t one time, substan tially as 'd'eseribedl 7. In nnrljtiplespeed driving "mechanism for the drills of drilling machines 'the con bination of a casing, a'masterge'ar ih' *g multiple rings of gear -teeth of di fierent diamet-ers'with theflone'fof largest diameter lowermost, spindles located at different points about the master gear and pinions of different diameters-removable and replaceable by slipping them oil from or onto the upper portions of said spindles, said pinions -being-auttmatically stopperl at the proper level to "mesh' w itlr'the proper gear, the high-*- speed zp-inio'nbeing seated l'we'st and the low speed pinion highest only one of said pinions occupying a spindle at one time, substantially as described.

8. In combination in apparatus of the class described, a master gear having rings of gear teeth of different diameters, spindles disposed at different points about the master gear, pinions removably mounted on the upper ends of the spindles and having portions supported on the tops of the spindles to determine the'location of the pinions along their spindles, substantially as described.

the master gear, pinions removably mounted on theupper ends of the spindles and having portions supported on the tops of the spindles to determine the locationof the pinions, along their spindles, some of the pinions having longer supporting portions I than the others, substantially as described.

10. In apparatus of the class described, a master gear, spindles located about the same, pinions removably mounted on .the spindles and having handle portions reaching up therefrom, a key carried by the handle portion and removably engaging a key way in the spindle, and a supporting portion connected to the handle resting on the upper end of the spindle to determine the level at which the pinion will be held on the spindle, substantially as described.

11. In combination in apparatus of the class described," a master gear, spindles disposed at different points about the same. a casing, said spindles at their upper ends being accessible, pinions removably mounted on the upper ends of the spindles and means for stopping the downward movement of the pinions in relation to the spindles and master gear when they are placed upon the upper ends of the spindles, said pinions being interchangeable and only one occupying a spindle at one time, substantially as described.

12. In combination in apparatus of the class described, a master gear having rings of gear teeth of different diameters, a spindle arranged parallel with the shaft of the master gear, a gear box through the-top of which the spindle is accessible, interchangeable pinions to be slipped onto and off from the said spindles at their upper-ends, said pinions being automatically stopped-at the proper level to mesh with the appropriate gear ring, substantially as described.

13. In combination in apparatus of the class described, a master gear having rings of gear teeth of different diameters. a spindle arranged parallel with the shaft of the master gear, a. gear box through the top of which the spindle is accessible, interchangefrom,

able pinions to'be slipped onto and off from the said spindles at their upper ends, said pinions being automatically stopped at the properlevel to mesh with the appropriate gear ring, for which purpose the spindle has a bearing, for supporting thepini-on when dropped thereupon from the upper end of the spindle, substantially as described.

14. In combination in apparatus of the class described, a casing, a main drive shaft, master gearing thereon comprising rings of gear teeth of different diameters, spindles at different points about the master gearing, interchangeable high-and low speed pinions to he slipped onto said spindles from their upper ends, and freely removable thereeach pinion being automatically stopped at the proper level to mesh with the proper gear ring, when moved down along said spindles, only one'pinion, high or low speed, occupying a spindle at one time, the said gear rings being arranged one close-under the other and at a less dis tance apart than the depth of either pinion, substantially as described. 15.111 combination in apparatus of the class described, a casing, a drive shaft, master gearing having gear rings of different diameters, a spindle extending vertically and parallel with the. drive shaft, individual high and low speed pinions to he slipped down along the spindle and each automatically stopped at the proper level to mesh with the proper gear ring, said pinions being freely removable from the spindles by moving them upwardly therefrom, onlyjone of said pinions occupyingthe spindle at one time.

16. In combination in apparatus of the class described, a casing, a drive shaft, master gearing having gear rings of different diameters, a spindle extending vertically and parallel with the drive shaft, individual high and low speed pinions to be slipped down alongthe spindle and each automatically stopped at the proper level to mesh with the proper gear ring, said pinions being freely removable from the spindles by moving them upwardly therefrom, only one of said pinions occupying the spindle at one time, the said master gear rings being arranged closer together than the depth of either pinion, substantially as described.

In testimonywhereof, I affix my signature.

- l/VILLIAM R; FOX.

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