US980973A - Gearing for lathes, &c. - Google Patents

Description

R. LB BLOND & W. P. GROENE.

GEARING FOR LATHES, 6m} APPLICATION FILED JUNE 18, 1909.

980,973. A Patented Jm10,1911.

5 SHEETS-SHEET 1 R. K. LE BLOND & W. F. GROENE.

GEARING FOB LATHES, 6w.

APPLICATION FILED JUNE 18, 1909.

980,973. Patented Jan.10,1911.

5 BHEETS-SHEET.2.

/ Qktoumq R. K. LE BLOND & W; F. 'GROENE- GEABING FOB. LATHES, &0.

APPLICATION FILED mm: 18, 1909.

Patented Jan. 10, 1911.

5 BHBETS-SHEET 3.

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BH'K. LE BLOND' & W. F. GROENEL' GEARING FOB. LATHES, 6w. APPLICATION rILnn JUNE 18, 1909.

Patented Jan. 10,1911.

5 SHBETSFQHEET 4.

R. 11.11.11 31:01:11 & w. 1"; GROBNB.

GBABING FOR LATHES, 61o. APPLICATION HLEDEJUHE 1a, 1909.

Rimmed Jan; 10. 1911.

5 SHEETS-SHEET s.

STATES P TENT oFF cnf momma: K. LE 31mm mm mm 1*. anon-1m, or cmcnrim'rr, omo, assrelions TO B; K. LE BLOND TQOL-CQ, 01

Application med June is, 1909. Serial No. 502,868.

OHIO. v

GEABING FOB LATER, M.

980,973. Specification of Letters Patent.

To all whom it may concern:

Be it known that we, RICHARD K. LE BLOND and WILLIAM F. GBOENE, of Cincin nati, county of Hamilton, and State of Ohio,

have invented a new and useful l mprovement in Gearing for Lathes, &c., of which the following is a specification.

This invention relates to feed and speed changing mechanism for machine tools, and

is particularly designed as an improvement on the devices covered by Letters Patent- 763,770 and 788,657.

The invention has ing the transmission'from the cone of gears directly and entirely within the feed box.

A further object is to provide-an improved system of change gears between the spindle and the drive gear, whereby the feeds and threads can be compounded and both the metric and Whitworth systems of threads obtained.

In carrying outthe present invention, we

multiply the transmission from the cone of I gears employed in the above-mentioned patents four times; or in other words, we use this cone four direct ways, the mechanism for obtaining these results being entirely within the feed box.l The result obtained by the present arrangement is a series of 36 changes in the feed, commencing at low speed and-rising step by step to high speed,

the said changes controlled by a movable yoke carrymg an intermediate gear.

whereby connection is made between a constantly driven pinion and any one of the series of stepped gears forming the cone, and by a lever and shifting mechanism which controls the interm V of a set of gears in such a manner as to o tain four-differing for each change in the cone gears. The invention will be hereinafter fully set forth-and particularly pointed out in the claims.

In the accompanying drawingse-Figure '1 is a diagrammatic view illustrating the arrangement of gearing contained in the feed box togetherwith the driving gear for the same. Fi 2 'is an end elevation of a lathe showing t e arrangement of gearing from the spindle to the feed box. Figs. 3, 4, 5 and 6 are diagrams of different arrangements ofgears between the spindle and feed box for cutting-various threads. Fig. 7 is a front i ing. Mounted in said casing is asha for its object the production of improved means for multiplyspring lockin .shaft (Z.

' 2. gears,

elevation of the feed box. Fig. asset-ionon line 88, Fig. 7. Fig. 9 is a rear elevation of the feed box. Fig. 10 is 2113011011?! emcimmrr, 0310, A GOBPOBA'IIONOF Patented Jamie, 1911; v

plan view of the same. Fig. 11 is a View of the index plate. Fig. 12 is a view of a slight modificatifin.

e erring to t e drawin ':--A designates the feed box which is in tlii form of a rectangular casing provided with a longitudinal'opening a in its front, an index plate a, being secured above and adjacent said 0 encarrying an elongated pinion b and provided with a box-gear b which intermeshes with the gearing from the spindle of the machine in a manner to later described. The pinionb'is located within a sleeve 12 fixed in the ends of the box A and slotted at its rear side to permit of the engagement of a gear b 'carried by an arm 72* of yoke b I mounted to slide upon said sleeve 12 and arranged torevolve in alimited are; around said sleeve. The motion of revolution and also the sliding movement of the sleeve are controlled by a handle 6 provided with a pin adapted to enter openings C in sai sleeve and to locate the yoke 12 and gear'lf' in operative relation to a series of gears D, D upon and driving the Mounted adjacent shaft d is a countershaft E provided with four gears e, e, e and e of different sizes, the first vmentioned gear e ion (1' secured to shaftd. The gear 6 meshes with a sliding pinion f on the feed shaft F,

and formed with thesaid pinion f are gear wheels f, 7' all constructed to slide on said shaft F and to drive the latter through a splined key i The normal speed is obtained by meshing pinion f with gear e. The second speed by sliding the gear into .mesh with gear e and simultaneous y disenggging gear 0 and pinion f. The third sp v is obtained by engaging gear f with and the fourth speed is obtained by the clutch faces f of gear f into engagement with the corresponding faces f of a pinion .f normally in mesh with the pinion e From the foregoing it will be understood that there are nine changes of speed brought bringing being constantly in mesh with a pinabout by shifting'the gear I) with relation to the cone gears and that these changes are multiplied by four by means of the pinions and gears c, e, 6 e ,f, f, f and f. The carrier upon which plnions f, f and f are mounted is shifted by means of a 5yoke G secured to a rock-shaft 9, said shaft being operated bymeans ofa crank handle 9. Said handle is provided with a spring locking ping adapted to engage recesses 3 1n the casing, whereby said carrier is held m the desired osition.

The spin e gear H is mounted upon the spindle in the usual manner, andthe usual reversing gears h, h are arranged adjacent I thereto, being mounted in a reverse plate h reversing gears h, 15., whereby movement is transmitted to-said stud from said spindle.

Stud it projects through gear It and is arranged to receive change gears for special threads. Meshing with the pinion Z) is a quadrant gear 72. mounted upon a suitable quadrant or carrier it which is movable to bring said gear it into mesh with gear if. It will be observed that the hubs on the quadrant gear 72., the reverse gear and the box gear bare all elongated so that they take up the equivalent of twice the space of the face of the gear. This arrangement peri mits of the placing of change gears upon said hubs, or the reversing of the gears for In Fig. 3, we have illusv compounding. trated the dlrectdrive to the feed box for cutting standard threads and feeds as shown by the index plate. Fig. 4c'illus'trates the arrangement for obtaining English or Whitworth threads with a metric lead screw.

Fig. 5 illustrates the combination for obtaining metric threads with an English lead screw. Fig. 6 shows the system of .compounding for special leads.

In Fig. 12 we have shown a modification of the cone-gear arrangement. In this form the cone shaft 6! is elongated as indicated at Z and provided with the pinions i 6, 11 2' corresponding with the pinions e, c e c of the countershaft E. The driving shaft B and the feed shaft F and their various gears and pinions retain the same arrangement as in the preferred form and the operation is identical.

Having thus fully described our invention, what we claim as new and desire to secure by Letters Patent of the United States is 1. In a feed or speed changing mechanism for machine tools, the combination of a feed box, a series of gears of different diameters mounted in said box, and forming a cone or stepped series,'a driving gear, means for selectively engaging said. driving gear and said series of gears, a feed shaft exsaid feed box, a countershaft mounted in teams 'feed box and driven by said changeable speed gearing andspeed changing mechanism carried by said countershaft andsaid feed shaft and cooperating to multiply the changes in speed of the first mentioned speed changing gearing;

3. In a feed or speed changing mechanism for machine tools, the combination of a feed box, changeable speed gearing mounted therein, a feed shaft projected into said feed box and driven by said changeable speed gearing, a plurality of gears of different sizes mounted on said countershaft, and selectively operated means for operatilveily connecting said gears with "said feed s a t.

. 4. In a feed or speed changing mechanism for machine tools, the combination of a feed box, main changeable speed gearing mounted therein, a feed shaft, and supplemental speed changing gearing comprising a counter shaft driven by said main changeable speed gearin and gears carried by said counter shaft an said feed shaft, the gears on said feed shaft being slidablvmounted.

5. In a feed or speed changing mechanism for machine tools, the combination of a feed box, main changeable speed gearing mounted therein, a feed shaft, and supple-. mental speed changing gearing comprising a counter shaft driven by said main changeable speed gearing and gears carried by a said counter shaft and said feed shaft, the gears on said feed shaft being slidably mounted, and means for independently operating said main and supplemental 1115 change speed gearing. I 6. In a feed or speed changing mechanism for machine tools, the combination of a feed box, main changeable speed gearing mounted therein, a feed shaft, and supple- 1 mental speed changing gearing comprising a counter shaft driven by said main changeable speed gearing and gears carried by said counter shaft andsaid feed shaft, said supplemental speed changing gearing also in- 1 eluding a selectively operated slidable member mounted on said feed shaft and controlling said supplemental change speed gearing.

7. In a feed or speed changing mecha- 1 nism for machine tools, the combination of a feed box, main changeable speed gearing mounted therein, a feed shaft, and supplemental speed changing gearing comprising a counter shaft driven by said main changeable speed gearing and gears carried by said counter shaft and said feed shaft, said supplemental speed changing gearing also including a slidable member mounted on said feed shaft and controlling said supplemental change speed gearing, means for selectively adjusting said member, and means for locking said member in any selected position.

8. In a feed or speed changing mechanism for machine tools, the con'lbination of a feed box, main changeable speed gearing mounted therein, a feed shaft, and supplemental speed changing gearing comprising a counter shaft. driven by said main changeable speed gearing and gears carried bysaid counter shaft and said feed shaft, said supplemental speed changing gearing also including a slidable member mounted on said feed shaft. and controlling said supplemental change speed gearing, a rock shaft, an arm carried by said rock shaft and engaging said slidable member, and an operating handle for said rock shaft.

9. In a feed or speed changing mechanism for machinetools the combination of a feed box, main changeable speed gearing mounted therein, a feed shaft and supplemental speed changing gearing comprising a counhandle for said rock shaft, and a spring locking pin carried by said operating handle.

10. In afeed or speed changing mecha-. nism for machine tools the combination of a spindle gear, a, box gear, and gearing connecting said box gear and said spindle gear said gearingincluding reverse gears and a quadrant gear, said reverse gears, quadrant gear and box gear being each provided with elongated hubs to receive translating gears. 11. In a feed or speedchanging mecha nism for machine tools, the combination with a main speed changing mechanism, of a. box gear driven thereby, a spindle gear, and gearing connecting said box gear and said spindle gear, said gearing including reverse gears and a quadrantgear, said re -verse gears, quadrant gear and box gear being each provided with elongated hubs to receive translating gears.

12. In a feed or speed changing mecha- I nism for machine tools, the combination with a mam speed changing mechanism,

means for multiplying the changes thereof,

and a'box gear for driving said speed changing mechanism, of a spindle gear, gearing connecting said spindle gear and said box gear, said gearing including reverse gears, and. a quadrant gear for driving the box gear at variable speeds.

13. In a feed or speed changing mechanism forv machine tools, the combination with a main speed changing mechanism. means for multiplying the changes thereof, and a box gear for driving said speed changing mechanism, of a spindle gear, and means interposed between the spindle gear and the box gear for driving the latter at variable speeds. the hub of said box gear being elongated. I

14. In a feed or speed changing mechanism for machine tools, the combination with a main speed changing mechanism. means for multiplying the changes thereof, and a box gear -for driving said speed changing mechanism. of a spindle gear, and gearing connecting said spindle gear and said box gear. said gearing including reverse gears and 'a quadrant gear for driving the boxgear at variable speeds, the hubs of I said reverse gear, said quadrant gear, and said box gear being elongated.

In testimony whereof we hereunto set our hands this 16th day of June 1909, 'in the presence of twoattesting witnesses.

, RICHARD K. LE BLONI). WILLIAM F. GROENE. Witnesses: v

FRED LE BLOND, WILSON KINSEY.

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