US812898A - Feed mechanism. - Google Patents

Description

No. 812,898. PATENT@ 1212.20, 1.906.

' J. J. TEACHER.

FEED MEGHANISM.

APPLICATION FILED FEB. 13,1905.

SHEETS-SHEET l I a WWNEEEEE WITNEEEEE PATENTED. PEBI 20, 1906.

J. J. THAGHER.

FEED MECHANISM.

APPLICATION FILED FEB. 13,1905.

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PATENTE!) PER 20, 1906.

J, J. TEACHER. FEED MEGHANISM AEPLIGATION FILED FEB. 13,1905.

4 SHEETS-SHEET 3- WITNEEEEJ INVENTUH No. 812,898. PATENTBD FEB. 20,'1906. J. J.. TEACHER. FEED MECHANISM.'

APPLICATION FILED IEB. 13,1905.

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FEE@

Specification of Letters Patent.

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ted Feb. 2G, 1005.

huplication filed February 13,1905. Serial N0. 245,467.

flfzpeciication, talien in connection with the hy the operator and at accimpanying drawings, forming a part oll the same, to be a lull scription thereof. i

The invention relates to mechanism for manually operatingor controlling a carriage or other part which is connected with nouer-driven mechanism for automatically feeding or operating it, the object being to provide a hand-operated mechanism whereby the movement imparted tothe carriage or other mechanism 'may be accelerated orretardeol by the operation of the hand, mechanism.

A further object is to provide a mechanism l for manually operating the carriage or other part which is so connected therewith that while it is in operative connection with the carriage the handle or other device by which 'it is manipulated is uua'l'octed by the operetion of the power-driven mechanism in iced-- ing or opere ting the carriage, the result being that the operating-handle or other part remeins stationary except when manipulated tho same time may remain connected with the carriage ready to ect thereon whenever manipulated by the operator. v

The various features of the invention will be explained in connection with their application to a mechanism for feeding the grinding-Wheel carriage of a grindiz' machine, in which the grinding-wheel is lied along the work in making a cut. lt will be understood, however, that the invention may' be :ii/plied with equal admiitage to the feeding grinding-machines in which mechanisms olt the relative ruw-.rement between the grinding- Wheel and work is produced by the movement ol carriage cfirryiugh the work and in which the `grinding wheel has no movement of translation in making the cut. It will also be understood that veriouev features of the invention may be embodied in other classes und styles of machine in which it may be desireblo to manually regulate and control the effect oi n. power-driven mechanism upon a carriage or other operating part.

, clear, and exact' depart by the automatic or power-driven ln the operation oit g grinding-wheel us lirst cuts upon i piece oi work for the reason that t le Surface elt l The heavy oi lche i n (rut by otuer parte o work. The :feed oit the grinding-wheel :is i takes the light cuts or over tl'io places whore it does not act pon the' work mig-ht be at e. much higher of speed thon is'produced by the automatic feed the carriage, which is limited by e heaviest cut token by the v'loel it is ted along' the work. ln pracht sent invention the movement of the carriage may be accelerated at any pointby the operation oi the inechai'iism for manually eli'ecting the movement ol' the carriage. lt is also "frequently desirable for various reasons for the operator to be able to retard or slow' down the feed of the grindingwheel carriage or work-carrying' carriage, the case may he, and this result may also be Aefiected by the operation of the n'iechanism for manually controlliitgr the movement olf the carri ago.

in grhiding-machiues es well as in other machines, the mechanism for manually operating the carriage is usually opcratoddby a hand wheel or wheels arranged vat the iront it is desirable that such f of the machineI and wheels should not turn during the automatic 'food of the carriage. ln practicing the prosent invention this desirable result is accompl'shed, and at the same time the handwheel or other operatinw device .may remain 4 Q b in operative connection with the carriage, so

that it is umieces nipulate clutches or other couplings in order to connect and disconnect the hand-wheel or other operating device with the cari" when it L" desired i manually opere te i carriage lo prf" nt movement of the operating device during the automatic feed of the carriage.

The invention consists in the various feetures end combinations referred to in the claims, which will be readily understood from the following detailed description of the mechanism shown in the accompanying the drawings, Figure l shows a View of n grinding-mschine in which in inding-machines the j Y y' acts unequally upon 4the wor-l; while taluni; the

sary for the operator to ina-- drewin Us.

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Aline 4 L1Fig. 1.

The grinding-machine shown in the drawings is provided with the usual work-supporting 'centers carried by the head-stock 12 and the tail-stock 2, the work being revolved by suitable driving mechanism, as is common in this class of machines. The grindingwheel 3 is mounted in a carriage 1i, guided in suitable ways extending longitudinally of the machine, the front way bein indicated at 5 in Fig. 4. The grinding wlieel carriage is moved on its ways'through two Ipinion's 6, arranged to engage a rack 7, secured to the carriage. There are two of these pinions, 6, and

the rack 7 is lcontinually in engagement with either one or both of the pinions, two pinions 'and also gears 12,

being employed in order that a shorter rack may be employed upon the carriage than could be employed. with a single pinion. These pinions are formed on-shai'ts 8, which are connected with a gear 1() by means of intermediate gears 11, which engage gear 10 secured tothe shafts 8. The gear 10 is ke ed to a sleeve 13, mounted to turn upon a ed stud 14, and both the mechanism for operating the carriage automatically and for operating it manually are connected with the carriage through this gear.v The carriage is fed automatically in yeither direction by the rotation of a worm 9,- engaging a Worm wheel 15, which is con-- nected with the gear 1() through intermediate bevel-gears 16, engaging bevel-gears 17 and 18, secured to `the worm-wheel-15 and gear 10, respectively.

The shaft on which worm 9 is formed is driven from a shaft 19 through a clutch (indicated at 20) which is keyed to the shaft 19 and is arranged between two sets of gearing connected to the worm-shaft in such manner" 4that the worm-shaft is driven in one direction when the clutch is in engagement with one set of gearing and in the opposite direction when the clutch `is in engagement with the other set of gearing. @ne set of gearing is indicated as two intermes'ning gears 21, one of which is secured to the worm-shaft and the other loosel mounted on the shaft 19 and arranged to e connected thereto by .the clutch 20. The other set of gearing is not shown, but consists of gears' similar to gears 21, connected by an intermediate gear and arranged on the opposite side of the clutch 20. his reversing and driving mechanism forms no part of the invention, and the details of the mechanismhave not been illustrated and need not he described.

erases As is usual in this class of machinesmechanism is provided for automatically shifting the reversing and driving clutch, so that the carriage is automatically reciprocated back and forth to feed the grinding-wheel along the work, the clutch hein shiited automatically as the carriage reac'ies each end of its stroke. shifting the clutch in the machine shown comprises an arm 22, the lower end of which is connected with the clutch and the upper end of which is secured to a short shaft 23, which carries a second arm 24, provided with gear-teeth engaging teeth formed on the ower end of a lever 25, the u per -end of which is arranged in the path o the reversingdogs 26. The reversing-dogs 26 are mounted upon blocks 27 adjustably secured to a rack 28, which vis connected with the carriego-operating mechanism, so that the rack moves in unison with the carria e. The connection between the' rack 28 an the vcarriageoperating mechanism consists of a pinion 29, engaging the rack and also engaging a pinion 30, formed on a shaft 31, to the inner end of which is secured a gear 32, which meshes sleeve 13 to which the gear 10 is keyed. The operation of reversing mechanisms of this character is well understood and need not be specifically described herein. through which the carriage is automatically operated, is driven continuously from ashaft 34, connected with the shaft 19 by two intermeshing gears, one oi which is indicated at 35 in Fig. 2. The shaft 34 is driven from the pulley-shaft 36 through gears 37, Fig. 4.

Through the mechanism thus i ar described The shaft 19, e f' The mechanism for automaticallyh 'with a gear 33,2iormed on the end of the v ico the carriage 'may be automatically moved "i along its ways to feed the grinding-wheel longitudinally of the work as the work is rotated upon the supporting centers. normal operation oi' this power feeding mechanism the bevel-pinions 16 revolve about fixed axes and act merely as intermediate pinions between the bevelegear 17 on the worm-wheel 15 and the bevel-gear 18 Von the gear 10. mounted that they may be caused to travel about the 'axis of the gears 17 and 18 by the manual operation ci either oi' two hand- During the y lIO The bevel-pinions, however, are so Wheels 38, arranged at the iront of the machine. When the pinions 16 remain in iixed position, the gear 1() will he driven at the' the worm.w`heel 15 but in the opposite directhin. It the plnions are moved about the axis ol" the gears 17 and 1S, however, the speed ot' the gear 10, and therefore the speed of the carriage, will be either accelerated or retarded, according as the movement of the pinions is in the direction of rotation of the gear l() or in the opposite direction. B v manuell)v operating those pinionsftherclforo, during the operation of the same spec as powcrffeed the rut;` of movement ol" the car-,.1

lio

clases e riage may be either accelerated or retarded at the Will of the operator and to an extent depending upon the rate at which he operates the pinions. In order that the pinions may be thus manualiy operated to vary the movement of' the carriage, they are mounted upon a frame consisting of a sleeve 39, mounted to turn about the sleeve 13, and an annular ring 40, connected with the sleeve by means of a hub 41 and the studs 42, on which the pinions 16 are mounted. The hub 41 and ring 40 connected by a Web (not shown) which is cut away to accommodate the pinions 16. The pinions are secured to sleeves 43, which are loosely mounted on the studs 42. The frame carrying the pinions is normally held in lixed position by means oli a worm 44, engaging a worm-wheel 45, formed on the ring 40, and this worm and norm-heel also form the means for turning, the trame in order to modify the effect of the power-feed on the carriage or to ell'ect the manual operation of the carriage when the power-feedV is thrown out.

The mechanism tor connecting' the worm 44 with the hand-wheels 38 is shown in Figs. 3 and 4. As here shown, each wheel 38 is connected with a shaft 46, to the inner end of which is secured a bevel-gear 47. rlhis gear engages a pinion 48, secured to a vertical shaft 49, which carries at its lower cud a bevel-pinion 50, meshing with a similar pinion 51, secured to the -shalt on which the worm 44 is secured. v

During;` the normal running'oi the machine and while the power-leed is operating upon the carriage the hand-Wheels 38 remain stationary, although they are in operative connection with the carriage. The inconvenionce and the complication in construction incident to the employment of clutches or other devices which require manipulation in order to connect and disconnect the inecl'ianism for manually operating the carriage are elimi natcd. By operatingr the hand-Wheel the operator is also enabled to accelerate the movomem` olA the carriage during the operaiion ol' the power-leed or to retard the movenient el the carriage at will and to any desired extent. llo can therefore move the rarriagiA quickly forward along any portion ol the work where thi` wheel is taking a light cui or is not acting' upon thework at all, or he can slow flown the carriage the wheel grinds up to a shoulder or when he desires to do so for any reason. Wfhen the poWer-feed is thrown out the operation .of the hand-.

Y wheel wiil more the :'iirriage along its ways, [he rear 1T in this case boinglield from Inovemen while the pinions 2li travel about the gear, and thus impart movement to the gear lo and the connected carriage.

While the mechanism sri n has been de scribed is a simple i id .Hliiment mechanism for vliet-.ting ilal desired :'esuiis, ii' wiil be understood that the invention is not limited to l gear, power mechanism tor operating said such mechanism and that the construction and arrangenient of the devices for connecting the hand-operated device with the carriage and Yfor manually controlling the speed. of the carriage While being operated bythe power-feed may be vari ed and modiiied With-- out departing from the invention.

What l claim, and desire to secure by Let ters Patent, is-

1. rihe combination of a power feed mech anism, a part operated thereby, and mechanism for manually accelerating the movement ot the part during the operation of the powern feed.

2. The combination of a power feed meehanism, a part operated thereby, and mechanism for manually accelerating or retarding the movement of the part during the operation of the power-feed..

3. The combination et power-feed, a carriage operated thereby, mechanism for manuaily accelerating the movement oi the carriage during the operationot` the o\\.'er-ieed.

4. The combination of a work-suimort, a grinding-wheel support, power mechanism for feeding one of said supports, and mechanism for manually varyingy the feed during the operation of the power feeding mechanism.

5. The combination oi a carriage, a powerdriven member, gearing through which motion is transmit-ted to said carriage, and mechanism for manually operating said gearing While in operation to vary the movement 0i" said carriage by the powendriven member. i 6. The combina-tion oa carriage, aplowerdriven member, gearing through which motion is transmitted to carriage, and mechanism for manually moving said gear ing about the axis of the driving member to vary the movement of the ca.' "iage by the driving member. l

7. rPhe combination 01" a carriage, of a driven member connected with the carriage, a driving member, intermediate gearing, power mechanism for operating the driving member, and mechanism tor manually turning the intermediate gearing about the the driving and driven members.

8. The combination with a carriage oi" a power-driven feed mechanism therefor, and a manual feed therefor unaffected. by the power-feed when operatively connected with the carriage.

9. Tine cci'i'iiiination with a carriage oi a power-driven feed mechanism therefor, intermediate gearingin said mech" i f means for holding said intermediate ing in position during the opera ion olt the .temi mechanism, and mechan n. tor mamiaiy shifting said gearing to effect the manna? lern? el the carriage.

10. The combination with :1 driven ,crier and a part operated therefrom, oi' a rlrivii ICC driving-gear, intermediate gearing between said driving and driven gears, a frame carrying said intermediate gearing, and mechanism for manually operating said frame.

11. The combination with a driven gear.

and a part operated therefrom, of a drivinggear, power mechanism for operating said driving-gear, intermediate gearing between said driving and driven gears, a frame carrying said intermediate gearing, means for locking said frame in position and means for manually operating said frame. y

12. The combination with a driven gear and a part operated therefrom, of a driving- Gear, a worm-wheel connected with said driving-gear, a worm engaging said wormwheel, a power mechanism for o erating said worm, intermediate gearing etween the .driving and driven gears, a frame carryin ,saidff'intermediate gearing, a worm-Whse connected with the frame, a worm engaging the worm-wheel, and mechanism for manually operating said worm.

13. The combination of a work-support, a toolsupport, a driven gear connected to feed one of said supports, a driving-gear, power mechanism for operating said drivin -gear, intermediate, gearing betweeii the riving and driven gears, means for holding said in.

termediate gearing in osition, 'and means for manually shifting said intermediate gear-- ing to impart movement to the connected snpport.-

le. The combination of a work-support, a tool-support, a driven gear connected to feed one of said supports, a driving-gear,

eiaaes hand-operated device, and gearing'between said device and the movable support .for transmitting motion from the device to said support and preventing movement of said device by the power-driven mechanism.

16. The combination ci a woriosupport, a tool-support, a reversing mechanism, gearing intermediate said reversing mechanism and one of said supports for feeding it in either direction, and manually-operated meehanism for effecting a relative movement between parts of said gearing to transmit motion to the connected support.

i7. The combination of a work-support, al

grinding Wheel support, a reversing mechanism gearing intermediate said mechanisilv and one of said supports 4for feeding it in either direction, a hand device, and connes tions between said vdevice and said gearing for shifting a part of said gearing to transmit motion from said device to the connected support.

JOHN J. ri-menne.

Witnesses J. H. THURs'roN, Vf. H. THURsToN.

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