US836684A - Boring-machine. - Google Patents

Description

No. 835,534. PATENTED NDV. 27. 1906. Him).

BORING MACHINE.

No. 836,684. PATENTED NOV.- 27, i906. C. -HRB.

BORING MAGENE. APPLIOATIOH P'ILED AUG. 28, 1905.

8 SHEETS--BHEET 2v T ATENTED NOV. Z7 1906.

BIRD1 'BORING MACHINE.

APPLIUATION FILED AUG. ze, 1905.

3 SEEETS-HEET 3V irsirnn sfrarllPATiENT OFFICE.

estarse Hiss, of WoossocirsnnsonsISLAND, Assiettes. sr Diener Asn Massa lesioni/mitre, cross-rosiers 'ro ooLiN o. BELL, or ssooirLi-Ns, Missacnossrrs, AND omai-raarl 'ro GEORGE r. WILLETT,

F NUR'WOD, MASSACHUSETTS.

To @Z whore may concern: l Be itlnown that l, QHARLEs BIRD, a sublect of the King of Great Britain, and aresident oi l/Voonsoclret, county of Providence,-

This invention relates to a boringrnacliine adapted for 'boring articles like. blanks for bobbins, handles, 6to,

@ne oit 'the objects of the invention is-to :5 provide a novel Workeholder for ,supporting the articles while being bored,` which work holder is simple in construction and eiiective in operation. f f Another object of myv invention is to prozo vide a novel mechanism lfor advancing the Work-holder intermittently to place'the successive articles in 'position to be acted upon by the boring tool or tools. My improved work-holder is comprised of z5 aplurality of sections pivoted to ether to form an endless-chain-like device, t 1e o posng viles of two adjacent sections eing shaped to constitute a pair of jaws between which ythe 'article is gripped while being' 3o bored.` Byinaking the vrorlrholder in the form of an endless-chain-like device-,and-

passing the sections of the Worl -holder around two driving-pulleys the portions of two adjacent sections, which constitute a 1,5 pair of Iclamping-jaws, are opened from each other when passing' around the driving-pullevs and `are automatically closed together when saidy sections pass into one of' the .runs

or"l the `cliain-lilre device. The articles may 4o be fed to the work-holder as the sections l thereof are passing over one the pulleys 7 and are opened away from each other, and

atterfeaeh article has been` bored it is auto-y matically released by the opening away Ifrom each other of the various'sections asthey pass over the other pulley.

My' improved mechanism for feeding the Worl-holder forward intermittently comprises two independent means to advance the 5o work-holder, one means operating to give the Specicatipn of Letters Patent. Apnlicaton tiled August 28, 1905. Serial No. 276.052.. I'

'Patentes Nav. s131906. .l

Work-holder its initial movement andthe other to give it \its` iinal movement. The means :for givin the Work-holder the initial movement are erein shown as a rack zand.

pinion, which ineens operate to give the wprk-holderra quick initialinovement. The rack and `pinion are released from the workholder before the (latter completes its advance movement, and a cam then comes into play to the Workholder itsnal move-v. ment, said/foam o erating to bring the Workholder to rest wit i a slow movement'.

f Referrin to the drawings, Figure l' illus--` trates the p an view of a machine embodying ,myinventlon f Eig? 2 is a transverse section on the line a: Fig. 1, the line )yyFig 1. .Fig. 4 is a section on substantial y the. line a a, Fi vertical section on the line t andFigsf is a 'detail hereinafter referr to.

The machine herein illustrated is designed yfor .boring blanks for"bobbins thou h Iwishy it understood that other articlescan e bored on the machine` as well as bobbin-blanlrs- Each bobbin-blank is acted u ron by a plu#- rality of drills, one drill psrtt/ia ly boring the hole, the next drill boring i ka little further,A

the next drill carrying the bo" e' operation nlthe hole Fig. 3 is s section onV 51: Fig. 5 isa I i ,F1g. #L Fig. [isa transverse section ori-the line c c, 'Fi 1;

is completed. For convenience I ill hereir'i-v f after refer to the article` being vbo e bobbin.

' l have herein shown five different lliills,

each having a different shape and each adapte. ed to erform a certain step in the operatun of boring the bobbin. These drillsaredesdas a ignated as l, 2, 3, 4, and 5, respectively, and.. l

each is mounted in a suitable drill-chuck'carried by a spindle 6. The spindles are mounted in suitable bearing 7 and are rotated by drivingpulleys 8; T e Bulleys S'are splned to the spindle 6, and eac s movement of the vcross-head advances the spindles through the' bearings and carries the indie is connect f ed to a cross-head 9, so t at reciprocating ach spindle is rotatably mounted in r{"'ne erase-hea@ may be operetfed in any suitable wey, and es herein shown l en'iploy adrum-eem 10, hevinge cem-groove 11 in its periphery, into which enters e pin or rojection 12, carried by e cross-ber 13. cross-ber is fest with guide-rods l, which are secured to the cross-heed 9 and which play back sind forth in bearings 15 and 16, in .nted on the frame of the machine. drinn l() is mounted on :i driving-shaft 1.7, endl is driven-b i instance, as the t riving-pulleys 18.

The Work-holder is in the forni of' eny endless-chain device, which extends transversely tol the freine 19 of the machine end transversely to the direction oi" movement oi' the drills. Said work-holder is lmade upl of a plurality of'seetions- 20, which are pivotcd together to forni tlle einlless-ehain device, end it isstipportcd and rotated by drivingpulleys/ll and 22', suitably joiirnalcd on shafts 23 and 24, mounted at either side of the frame-of the machine. l: 'h section 2() is preferably made with two ,gripping members, :ind the adjacent gripping nieinbers of adjacent sections fire arranged to constitute a pair of gripping members or gripping-jews.

l'n the present embodiment oi my invention each section 2t) lhas projet-.tiner outwardly therefrom two arms 25 and 26, the arms 26 being recessed, as at 27, to receive a bobbin and the arms 25 each having; :t pointed projection 28 extending therefrom and in zi direction toward the adjacent section. Each projection 28 is herein shown as being slidably mounted in itsl erin 25 sind backed by e springr 29, thereby making each projection e yielding projection. I

l' prefer to provide ineens for holdinggboth Vthe topa-nd the butt of the bobbin, :ind therefore I have shown twoseries of sections 20., the two series being connected by rods or pins 30, and for convenience i.einploy the -rodsor pins 3U es the means for pivotallyconnectingr together the sections of each series.

The driving-wheels 2l and 22 are shiown as notched in their peripheries to receive the pins or rods 30, end seid Wheels therefore act es sproeket-wl'ieels for driving,r i'orwerd the Work-holder.

The sections which :ire driving-pulleys 21 end 22 are opened away from euch other,4 as best shown in Fig. 3, b ecause of the feet-that the arms 25 and26'project from yeiich section outwardly. 11s the sections pese oll` from the driving-wheels 21 and 22 and partake of the straight-line movement whichthey have between the driving- Wheels the arms ol adjacent sections close together, will be obvious. this openint away from each other and closing togetherof the arms of 'adjacent sections to grip and release the hobbies.

'Ehey suitable 'ineenssuctniorwrapped about the l ineke use of v {geenee- Referring totg. 3, it will be seeiitliet the section which, has the position j is opened ewey from the Section which hes inst left the drivingjpulley 22 end hes the position g end.

that there is plenty ofrooni between the erin 26 of? the former section :indtlie erfni. 25 of l thelet/,ter section to insert e, bohbin 3.1, es Shown in dot-ted linee. As soon, however, as the sectionY occupying the position fin Fig, 3 lies advanced one step, or 'into position f, the

bobbiii is cleniped between the arme end 26 of ad'acent sections its shown by the boh- Y 1 n l n bin designated 32, end is rigidly held in such position until the sections between which the bobbin held begin to pass over the drivingwheel 2l, at which time said bobbiii ie released by the automatic opening esi/ey l'roi'n. each other of the sections. e

As the sections 2() pass across the iiieelii'ne i'roiiione driving-wheel to theot-her'those sections in the upper rmi, or those which gripv the bobbins, aresiipported liy bed-pieces 33, which have suitable grooves W1 to receive 'the projectingr ends oftlie pivotal rods fit), whereteiit'iy, it being advanced one step for-cenit forward'movementl of the boring'devicee, so that after the iiret liol'ibin. has been acted upon by drill No. 1 the work-holder i'noves saidybobbin forward to be eet-ed upon by drill No.` 2 and 'then moves said liobbin forward afain to be acted upon by drill No. 3, ec. 'l ie means i' prefer forgiving this intermittent inoveinent' comprises one device for giving the Work-holder its initial'nioveinent ate comparatively quick speed and :i second device for giving said work-holder its final movement at e slow speed. tion has been' adopted so to insurehririt ing the work-holder to rest .et the eiilioi'- eee i This cenetrne forward movement Without any jero'r sudden st.op.such ae would be liefl'ileto throw'the bobbins ont of the position they shoidd eeenen iv to be properly bored.

work-holder its initial nioveiiient'ie e reel( and pinion operated from 'thgdrivinfr-sheit i7 sind ede tedto aetiiat'e e retchet-wlieel' oiitlie she, t 24, towhich the driving-pulley' 22 is fest, and 'the ineens have shown for u giving the work-holder its hrm: movement comprises xi, eem on the Shaft 17 and adapted transversely of the rame'in-suitable ways 39, the teeth of said rack-bar meshing with the gear 40, mounted on the shaft 17 Said rack-bar has connected thereto a pawl 41, 5 adapted to engage' the teeth of the ratchetwheel 36, which, as above stated, is fast on the shaft 24. The pawl 41 is shown as Apivotedfto the end of an arm 42, loosely mounted on the shaft 24 and pivotally connected to :a the 'rack-bar 38 by a 'suitable link 43. The shaft 17 has a continuousl -rotary motion, and I have rovided means ihr automaticallyl clutching t e gear 40 to said shaft at the proper time and then lfor automatically disrxengagin work-ho der has made its initial movement.

The gear 40 is shown as having clutch proj ections 44, which are adapted to engage an operating-projection on'a clutch member 46, zo keyed to the shaft 17 f Said clutchmember is normali held disengaged from the gear 40 vby a suita le spiin 47 and is thrown into engagement with sai gear bya stationary cam member 48, having a cam-'surface 49, with which'a projection 50 on the clutch member engages durm the rotation of the shaft 17. The parts are o arranged'that'wat the proper time in a cycliof operations-that is, when the drills are Withdrawn, as shown in Fig. 1.- the projection 50 on the clutch member 46 engages the cam 49, .thereb moving the clutch member `46 longitudina ly of the shaft and causing the projections 45 thereon toengage the projections 44 on the gear. When this occurs, the rotation of the shaft 17 is transmitted tothe rear 40fand the rack-bar 38 'is reciprocat'ed, thereby rotating the driving-whee 22 and giving the work-holder its .initial advance movement. Just before the the projection 50 passes off from the cam-surface 49 and the spring 47- dise ages the clutch member from the pinion. e pinion is then restored to its normal position by u' means of a suitable weight 51, suspend by i a flexible connection 52, which is ound about the hub 53 of the gear, the resto ng of the gear to its initial' position throwing the rack-bar 38 into its initial position, as tall' be o obvious. The final movement of the iWorkholder is effected bv a cam 54, which is herein shown as carried by the clutch member `50 and which engages iingers or projections 55, depending from a slidm bar 56, which carl ries at one end a awgl 57 to engage the ratchet-wheel 37. '.Fhe sliding bar 56 reciprocates in suitable ways 58. The cam 54 is so shaped and positioned that it en agesone ofthe irwers 55 to advance the rate -et-Wheel 6g just as t e gear 40 is disengaged from the ``\shatt 17, so that said cam picks up and continues the movement of the work-holder'. The cam isso shaped that it givesa slow movement tothe Work-holder, thereby persaid gear from the shaft after the.

movement of the work-holder is completed mitting it tov come to rest gradually and without any shock or sudden stop.

I have also provided means to limit the advance movement of the work-holderso as to bring it to rest with the bobbins carried therebyin the proper position for being bored. The means for accom lishing this is herein shown as a stop-paw 60, pi'voted to the trame at 61 and adapted to engage a ratchetwheel 62, tast on the shaft 24.

During the backward movement of the slide 56 the t'ail 63 thereof enga es a projection 64 on the stop-pawl 60 an raisessaid pawl out of engagement with the ratchetwheel 62 to permit the initial movement of the work-holder. As soon, however, as the cam 54 begins to move the slide 56-to the right, Fig. 6, the stop-pawl is released and al owed to fall into engagement with the ratchet-Wheel 62, said sto -pawl engaging the next tooth of the ratc et-wheel as the latter is rotated, and thus limiting the movement of the work-holder. l

The ratchet 36 and preferably also the ratchets 37 and 62- are made adustable. This is herein accomplishedby ma ing the view portion of each ratchet-wheel separate from the hub portion and securingthe two parte together. by bolts or screws 91, which pass .through slots 92 in either the view or ub portion. By means of this construction the vv'iew portions of the wheelsxcan be adjuste'l to take up any lost motion.

have herein shown the stationary cam member 48 as being adjustable, so as to va'ry the ppsition of the cam-surface 49.v ISaid cam member is provided with an arrn'65, which is secured to therame by means of a suitable bolt 66, and I prlovidethe arm 65 witha slot 670, through W 'ch said bolt passes, so as to permit an ad'ustment ofthe cam member about the sha t 17.

The shafts 23 land .24 are shown as being mounted in adjustable bearings,'so that any slack in the endless-chain-like work-holder can be taken up. The bearingsijf-r these shafts are designated by 67 and are iipported by suitable brackets 68, rejecting from the frame of the machine,-sai bearings being adjustable laterally by means of adjustingscrews 69 of any suitable attern. he screws are herein shown wit 1' their heads against the side of the frame, s0 that by turning them the bearings .67 can be moved outwardly. v

It will be noted that the boring of the bobbins is done while they are supported between the sections forming the up er run of the work-holder. While the bo bins are thus supported the are in a right 1ine,\and therefore the spin les 6 are arranged in a horizontal line, as herein shown.

In the operation ot the device the drum 1\ reciprocates the spindles, thereby carryingp TOO drills toward and trom the work-holder. VVl'iile the vdrills are retracted the work-holder is advanced one step, and when the Work-b lholder has been bri'iiigh t to reet the drills'advence and operate on the bobbins supported thereby.

lt will be seentliai; my ineeliine has comparati vely few parts as compared with many previous machines for boring bobbiiis.

'While l have illiietrated herein on e ein bodiment of my invention, ,l do not wish to be limited totheconstiiictional details shown,

these nielv bevaried without departing from the invention.

Although the abovedescription lisis, for

`the sake oiilluetration ,"rifieried to a machine for boring bobbiii-blanks, `the invention is not limited to the .boring of any particular article, but resides in a\,l"ii ri,ng-iiia'chine for boring any. article, which boring-machine has the characteristics,pointed out ,in the `appended claims. j j

Having fully described milv invention., what I claim as new, and.v d esire to seeure'by Letters Patent, is-

1. In a machine ot tlielelaes described, a'

Work-holder, a boring-tool, means to give the Work-holder a step-by-step movement, said means comprising a rackand ,pinionl to give the work-holder'its initial movement, and a cam ,to give the work-holder its ,Enel movement in each lStep.

2. In a machine of the class dcecribed, a

- vvfork-holder, a boring-tool, means to give the' lWork-holder a step-by-step movement, said meensomprising one device to give. lthe v -said@means'including adevice t workholder the initial movement of each step, andenother device to give the workholder the final movement oieechstep, and

means to limit the extent of movement of the 5 work-holder at eachl step.

In `a bobbineboi'ing machine, it workholden;meansI to give eaidv'ork-lfiolder a` s -a Astep-by-,ste pl. movem ent,

i said f Wlieelsthe initial movement ol each step; and

I work-holder another device .to give tlie'viheels the final movement of each step.` 5. In a vboring-machine,

ivoted toget er 'to form an endless-chain ike device, driyii'ig-whecls aboutir/inch said passee,fii,nd means. vto give said driving-Whoo s,y a step-b y-.itep movement,

passes, andrifiemisiogive said I 'ii work-holderj comprising a .plurality of grippinginembers wheels the ini tial movement of each step, sind a cam to give the wheels the final movement of each step.

6. in a boring-machine, a work-holder" comprising a plurality of grpp' members .iivo'ted togetier tov form en @gees-'chainlike device, driving-wheels about which -eaid wi'ork-liolder asses, and Ineansto giversaid driving-wheels a step-b -step movement, said ini-ans including av evice to-give said wheels the initial movement ofeach step, and another device to giveftl'ie wheels the final movement pi' eacl'istep, Vsaid iiie'an'siricluding a device to act on'onedriving-Wheel to give the Work-holeler'rthe initial movement oi" each step', and another device to act on/ the other driving-Wheel to give 'the vork-holder the final ii'ioveinent of each step'.

7. lli a boring-machine, a work-holder in thelorm of an endless chain having grip ing nieinliers, two driving-wheels about w iich said chain passes, means to give said drivingiwliieels a'step-by-step movement, said means comprising a rack and pinion to rotate one driving-Wheel, thereby to give the Work- .holder the initial movement of edach step, and a cam to aotuete the other drivin-Wheel, "thereby to give the Work-holder tie iinal movement of each ste 1 8. In a. boring-maci-ine, a work-holder in thelorni of ancndlees chain lia-ving ing members, two driving-Wheels about Wiicli said chain passes, means to Igive said drivingwheels' a step-by-step movement, said means comprising a rack and pinion to rotatecme driving-wheel, thereby to give the Workholder the initial .movement of each step, a

cam to actuat'e the other drivin 4-Wheel, thereby to give `the Work-holder t e final movement of each step, and a stop-pawl to stop the 'work-holder at the end of euch step;

Q. In a boring-mecliine, .a work-holder comprising an endless-chain-likedevice having` grip ing members, two! driving-Wheels about wllicli said cliainpe'eses, .a ratchet- 'wheel rigid with each driving-Wheel, means to act on one ratchet-wheel to give the workholde'r the initielinovementof each-step, and

another means to act onl the other ratchetwheel `to give the Work-holder the final movement of each step. ,e

10. 'Inn a j boriiig-niia'chine,y a work-holder comprising 'an 'endless-chainflike device havmg gripping inembere, twoI (lrivi.ng-Wl ieels about which said AWork-liolder passes," apawland-ratchet ri'iechenism' for advancing each k,driviiigwheeh means "to'actiiate seid 4pawl-an'rl-ratchet mechanism successively.

1]. In a boring-machine, a work-holder coniprisingan,'errdless-chain-like device having gripping members, two driving-wheels about which said Work-holder asses, means to give thework-holder efstepiy-step Inovenient, 'means .comprising a separate FOO IIO

pmf-mld-mchet mechanism. foi" advancinff each driving-Wheel, means to actuate sain Pauli-andar what mechanisms. succcssisf'ely', and a, stoppawl to stop the movement of the work-carrier am she and of meh ste-p, said stop-pawl billing controlled by @ne of the pawl-zmd-ratchet mechanns.

L1 testimoiy whereof I have signed my name @o tins two subscribing Wltnesses.

` ,CHARLES HIRE.

Nltnesses 1 JOHN C. EDWARDS,

MMZABETH E MORMSOBL specification in the 9285936@- of

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