US1918584A - Gin rib grinding machine - Google Patents

Description

July 18, 1933. J. BEHLE 1,918,584

GIN RIB GRINDING MACHINE Filed June 29, 1929 5 Sheets-Sheet l July 13 1933- J. BEHLE Lm GIN RIB GRINDING MACHINE July 18, 1933. 1 BEHLE GIN RIB GRINDING MACHINE Filed June 29, 1929 5 Sheets-Sheet 5 July 18, 1933. J. BEHLE GIN RIB GRINDING MACHINE Filed June 29, 1929 5 Sheets-Sheet 4 atboz m13 Filed June` 29,

1929 5 Sheets-Sheet 5 arbor ma Patented July 18, 1933 uNrrlaznl STATES PATENT orrice il()WEIEIEI` BEHLE, OF DALLAS, TEXAS, ASSIGNOR TO THE MURRAY CQMPANY, OF DALLAS,

TEXAS, A `COR-IPORATION OF TEXAS y GIN RIB GRINDING MACHINE Application filed June 29,

This invention relates to a grinding machine, and particularly to a construction adapted to grind or finish a gin saw rib and embodying a carrier mounted to reciprocate beneath a grinding wheel and supporting the work and a form to guide said wheel.

In such grinding of an irregular or curved object it has been found important to properly adjust the elevation of the grinding wheel relative to the work s that when guidedin its travel by a form moving with the work carrier the proper depth of cut will be secured to effect an accurate finish of the ribs which are fitted between the gin saws. In order to prevent grooving of the grinding wheel when operating on a narrow object of this character the work is given a continuous transverse movement across its longitudinal path of travel beneath the wheel and the result of these two movements of the carrier is an even wearing of thel wheel and complete grinding of the surface of the work.

The invention has for an object to provide a novel and improved construction of grind- -f ing machine includinga grinding wheel yieldingly mounted and'carrying on its shaft a guide roller, and a work carrier mounted for longitudinal movement beneath the wheel and for movement axially thereof.

A further object of the invention is to present a new structure of rib grinding machine in which the grinding wheel is mounted in a pivot-ed yoke and carries on its shaft. a tapering guide roller and drive pulley, together with a work carrier alined with the grinding wheel, a guide form cooperating with the roller and adjustable axially thereof, and means for reciprocating said carrier and form.

A further obj ect of the invention is to provide an improved carrier mechanism consisting of a Werl: holder and guide form mount-r 1929. serrano. 374,755.

Other and further objects and advantages of the invention will be hereinafter set forth andthe novel features thereof defined by the appended claims.

Figure 1 is a front elevation of the machine,

Figure 2 is a side the left, j

Figure 3 is a top plan,

Figure 4 is an enlarged vertical section of the carrier driving means,

Figure 5 is anelevation of the work grip at one end of the holder,

Figure 6 is a plan thereof,

Figure 7 is a plan of the grip `at the opposite end ofthe work holder,

Figure 8 is a side elevation thereof,

Figure 9 is an elevation of the control means for the' shift bar of the work holder,

elevation thereof from Figure 10 is a section on line 10j-10 of Figure 9,

Figurell is a horizontal section of the reversing drive means, y

Figure 12 is a vertical section of the same,

Figure 13is aA detail vertical section of the guide form adjusting means,

Figure 14 is a section on line 14-14 of Figure 13,

Figure 15 is a section on line 15-15 of Figure 14,

Figure 16 is a detail section of the carrier drive means, and

n Figures 174 and 18 are details of the work holder control means.

Like numerals of reference indicate like parts in the several figures of the drawings.

In the preferred form of the invention as herein disclosed the numerall() designates abase upon which opposite side standards 11 are supported and connected by a brace bar 12. Intermediate these standards are a series of cross beams l13 forming supports for parts of the mechanism. i,

The rib .holder or carrier 111 is provided with work grips 15 and 16 at its opposite ends and is mounted upon a carriage base 17 extending between the axles 18 upon which it is mounted by bearings 19. 'Ihe axles are provided with rollers 20 which traverse the track bars 21 mounted upon the standards Gti carried by bearings 2S to prevent slippage.

11, and the front and rear axles are connected by rods 22 and bearing brackets 23 on the axles. The driving rack 24 is supported from these aXles by the bearings 25, and meshes with a gear 26 secured to the countershaft 27 depending from the track bars 21. The countershaft 27 also has secured thereto a pinion 29 meshing with a gear 30 uponA the drivel shaft 31 supported by bearings 32 on the standards 11. j

The shaft 31 is provided with a wheel or pulley 33 adapted to be drivenalternately in opposite directions by tangential contact with the smaller wheels 34 and 35, alliof said wheels being faced with suitable material The wheels 34 and are carried by shafts 36 and 37, respec-v tively, and these shaftsare mounted in a lever bearing 38 supportedby a control shaft 39 operatingin bearing 40 upon the standards 11, see Figure 11. The control shaft is actu`r ated by a manually operated lever 41 extending to the end of the frame and there guided I by a slotted hanger 41a provided at its lower end with a casing 4l?) for a supporting spring 41e disposed beneath the level'. The drive shafts 36 and 37 are provided with fast pulleys 43 and 44 respectively, from which suitable drive belts 43a and l 44a extend to a source of power (not shown).` The belt 44a from pulley 44 is reversed so as yto impart rotation in'opposite directions to the wheels 34 and 35.

The carrier 14'is orooved longitudinally at 14a to receive the base of the cotton gin rib A to be ground, and this rib is held in position at one end by a grip 16 overlapping the foot C of the rib and held yunder tension of the springs 16a at opposite sides, asshown in Figures 5 and 6. The foot Bat the opposite end of the rib is held upon the work holder by the clamp 15, which, as seen in Figures 7 and S, comprises the jaws 47 actuated laterally of the holder by the screw 47a. Intermediate of the groove 14al a brace 45 is disposed in notches 46 to engage and support the under face of the rib A. i

A master rib form 48 is located parallel ro the carrier 14 and has its upper surface 48o: conforming to the curvature of the rib to be ground. This form is ad apted'to be traversed by the tapering guide roller 49 mounted'on a shaft "earried by bearings 50a supported by ayoke 50?) lwith bearings 50c upon the standards 11 at their rear. The yoke is formed with a brace 50d about which a cable 55 is looped and attached to a counterbalance (not shown). Brackets 56'are also secured to the yoke tohold the roller 49 in position, and anoperating arm 560iv is extendedilongitudinally from the yoke and provided with a depending handle portion 565, asr shown in Figure 2.l By means of this arm and the counterweight the grinding wheel 73 may be raised or lowered relative to the Work. The

shaft 50 is driven by a fast pulley 51 thereon from which a belt 52 extends to a pulley 53 on the armature shaft of the electric motor 54 supported upon the rear beam 13. The grind.- ingwheel 73 is formed of carborundum or other suitable material and secured to the shaft 50 in alinernent with the carrier for the rib.

ln Figures 13, 14 and 15 means are shown for shifting the guide form 48 lengthwise of the roller 49 and these comprise the screw 57 carrying the adjusting wheel 58 and locking wheel 59.` This screw is connected by a ball and socket joint 60 to a rod 6l connected by a sunilar socket 62 to a lever 63 secured to a shaft 64 which also carries a crank lever 65 retained by a brace 66, The shaft 64 passes upward through a bearing 63 on a front beam'13 and. carries at its top a lever 69 pivcted to the shift bar 70 which extends longi-l tudinally of the frame and is supported at its opposite ends by the sleeves 64 upon the shafts 85.

lei-longitudinal rod 71 is connected to the lever 65 by a universal joint 67 and extends yto a similar lever 65a, at the rear of the machine vwhich also actuates a shaft 65a in a bearing 68ay and carrying the lever 690J connected to the rear end 70a of the shift bar 70. The screw 57 when operated inward to the dotted line position Y in Figure 13 shifts the form as there shown and causes it to move upward on the roller 49, if in contact, thus raising the shaft and the grinding wheel which permits of its adjustment as the wheel becomes worn.

The work holder 14 is also longitudinally adjustable upon its supports 18 by a shift bar 705 similar to the bar 70 and supported at'its front and rear by sleeves 84a on the shafts 65 before described. The bar 70?) is actuated by a lever 86' mounted on a shaft 87 carried in bearing 88. At the opposite end of the shaft 87 isy mounted a lever 89 connected to a rod 71o by a joint 90. The rear of the rod 71a is connected to the lever 74, by a joint 90er mounted on a shaft 87a carried in a bearing 68a. At the opposite end of the shaft 87a is mounted a lever 86a which actuates the rear ofthe bar 70?).v The rear of rod 71a from lever 89 is connected yto a double lever 74 by a Asocket 90a and from the opposite end of 'f' his lever a rod 82 extends to a socket 75 eccentrically mounted. upon a wheel 76 upon a shaft 77 supported 'in bearings 78 on one standard 1l. This shaft is driven by a chain 6() extending over sprocket r79 thereon and over a sprocket 81 secured to shaft 27 by which the carrier and form are reciprocated. @ee Figures 9' and 10. This longitudinal movement of the work holder constantly shifts the rib laterally of the face of the grinding lWheel and prevents the formation of channels or grooves therein and undue wear at'any portion.y

`to bringthe drive Wheel 35 against the pulley 83 on shaft 31 Which through the gears 30, 29 and 26 actuate` the drive bar 24 for `the carriage supporting theV work holder and form. The shaft 27 transmits motion to the sprocket 81 which through the chain rotates shaft 77' and Wheel 76. The eccentric connection to this Wheel causes rod 82 to reciprocate and oscillates the `double lever 74 vwhich throughv the connecting rodlo shifts the machine Avvill be `obvious'from the foregoing description. j

The invention has been described as particularly designed for grinding the outer face of cotton gin ribs, still it is applicable to other grinding Work by changing the configuration of the Work holder and guide form to correspond with the Work to be ground. While the details of the invention have been shown and described it is notconfined thereto as changes and alterations may be made therein Without departing from the spirit of the invention asrecited in the following claims.4

IVhat I claim, is:

1. In a grinding "machine, a shaft provided with a grinding Wheel, a Work carrier, means for reciprocating the 'carrier under the Wheel longitudinally, means for lreciprocating the carrier transversely during the longitudinal movement, a guide formvinovable With said carrier, a roller upon sai-d shaft disposed to traverse said form, a manually operated adjuster for shifting said form axially of the roller, a common drive shaft for the carrier and form, and a connection from said drive shaft for continuously reciprocating the `carrier axially of the grindingwheel.

2. In a grinding machine, a shaft provid- `ed with a grinding Wheel and a guideroller,

a carriage provided Witha Work holder and form alined with said roller, meansv for reciprocating said carriage beneath the Wheel, and means for shifting said form axially of the roller to elevate the grinding Wheel.

3. In a grinding machine, a yoke pivoted at one end of the machine frame,a grinding Wheel, tapering roller and driving pulley `carried by a shaftin said yoke, a drive shaft at the pivot of the yoke having a connection with said pulley, a carriage provided with a Work holder allned with said Wheel and a form alined with said roller, and means `for reciprocating said carriage. f

4. VIn a carried by a shaft in said yoke, a .drive shaft at the pivot of the yoke having a connection With said pulley, a carriage provided with a Work holderalined with said Wheel and a form alined with said roller, means for reciprocating said carriage, comprising oppositely rotated drive pulleys, an intermediate main pulley having a shaft geared to a reciprocating rack on the carriage, and means for shifting either of the drive pulleys into Contact with the main pulley.

In av grinding machine, a yielding mounted shaft provided with a grinding Wheel and guide roller, a carriagesupported upon the machine frame and having parallelaxles, a driving rack upon said carriage, means for actuating said rack,fa Work holdgrindingmachine, a yoke lpivoted at one end of the machine frame, `a grinding,` Wheel, tapering roller and driving pulley" er slidingly mounted upon said axles, a j

guide form slidingly mounted upon said axles, longitudinal shift bars `for said holder and form engaging projections therefrom, manually operated leversvfor adjusting the shift bar for the form, and adriving connection for continuously actuating the-shift bar for the holder.

6. In a grinding machine, a yielding mounted shaft provided with a grinding Wheel and guide roller, a carriage supported upon the machine frame and having parallel axles, a driving rack upon said carriage, means'for actuating said rack, a Work holder slidingly .mounted upon said axles, a guide form slidingly'mounted upon said axles, V-longitudinal shift bars for said holder and standards, a swinging yoke pivoted upon the rear beam, a shaft at forward portion of said yoke carrying a grinding Wheel, a guide roller and a driving pulley, means from the pivot ofthe yokefor drivingsaid pulley, a

"carriage mounted on said trackways, a Work holder upon the carriage and alined with said Wheel, a form upon the carriage to cooperate with said roller, a shaft connected to reciprocate said carriage, a driving pulley on said shaft, oppositely driven Wheels disposed to engage the periphery of said driving pulley, a rock levercarrying on its opposite ends the said opposite driven wheels, and means for oscillatingsaid rock lever to alternately engage said wheels with the pulley..

8. Inva grinding machine, side standards havingtrackways upon their upper surface, beams connecting the front and rear of said standards, a swinging vyoke pivoted upon the rear beam, a shaft at forward portion of said yoke carrying-a grinding wheel, a guide roller and a driving pulley, means from the pivot of the yoke'for driving said pulley, a carriage mounted on said trackways, a work holder upon the carriage and alined Vwith said wheel, a form upon the carriage to cooperate with said'roller, a shaft connected to reciprocate said carriage, a driving pulley on said shaft, oppositely driven wheels disposedy to engage the periphery oflsaid driving pulley, a rock lever carrying onits opposite ends the said opposite driven wheels, Vmeans for osci-llatingsaid rock lever to alternately engage said wheels with the pulley, shift bars slidingly mounted atlthe opposite ends o f the said standards and engaging said work holder and form to reciprocate transversely uponthe said carriage, manually operated means for adjusting said shift barfor said form, and automatically operated means for continuously reciprocating the said work holder transversely during the travel of the carriage. 1

9. In a grinding machine, a support, a rotatable shaft above said support, a grinding wheel mounted on said shaft, a work carrier mounted to reciprocate on said support, a guide form movable longitudinally with the carrier, means for longitudinally reciprocating the carrier and the guide form, vmeans for moving the carrier transversely independently of the form during the longitudinal movement of the carrier and the guide form, means for moving the guide ,forml transversely independently' of. the carrierl shaft travelling on said f support, a guide roller having an inclined lsurface and connected with the grinding wheel, a reciprocating work carrier mounted on the support for longitudinal movement under the wheel, a guide form: mounted for longitudinal movement and engaged by the inclined surface of the roller, means for moving the. carrierk transversely independently of the form during the longitudinal movement of the carrier and the guide form and means forl adjusting the form to compensate the wear of the grinding wheel. v

11. In a grinding machine, a shaft provided with a grinding wheel, a roller, a vertically swinging support for the shaft, trackways beneath said shaft, a carriage mounted to travel upon said trackways .beneath the said wheel, a work holder mounted to reciprocate transversely7 upon the carriage, a guide form on said carriage for the roller, a rack on saidy carriage, a gear engaging the rack for driving said carriage, and means for reciprocat- `the carriage, a longitudinal shift bar engaging said form, manually operated means for .adjusting said bar, and a tapering roller upon said shaft disposed to traverse the form.

13. In a grinding machine, a shaft provided with a grinding wheel, a roller, a vertically swinging support for the shaft, trackways beneath said shaft, a carriage mounted to travel upon said trackways beneath the said wheel, a work holder mounted to reciprocate transversely upon the carriage, a guide form on said carriage for the roller, a rack on said carriage, a. gear engaging the rack for driving `said carriage, means for reciprocating transversely the Work holder during the travel of thecarriage, a master pulley for said driving means, and opposite rotated drive pulleys mounted for alternate engagement with the periphery of said master pulley.

14. In a grinding machine, a sha-ft provided with a grinding wheel, a roller, a vertically swinging support for the shaft, trackways beneath said shaft, a carriage mounted to travel upon said trackways beneath the said wheel, a work holder mounted to reciprocate transversely upon the carriage, a guide form on said carriage for the roller, a rack on said carriage, a gear engaging the rack for driving said carriage, a shift bar extending longitudinally of the work holder and engaging the same, and levers connected to said bar for oscillating the same in a horizontal plane.

15. In a grinding machine, a rotatable shaft, a vertically swinging support for t-he shaft, a grinding wheel mounted on the shaft, a guide roller mounted on said shaft, a carri age reciprocating transversely of the shaft, a work holder on said carriage, a guide form mounted on said carriage and enga-ged by said roller, means for moving the work holder laterally during its reciprocation, and means for adjusting the guide form laterally independently of the work holder. v

16. In a grinding machine, a work carrier mounted to shift transversely, projections depending from vthe said carrier, a shift bar disposed between the projections, a pair of vered for longitudinal movement and engaging the inclined surface of the roller, a shift bar engaging the guide form, a pair of vertical shafts, levers connectingl each shaft to the ends of the bar, arms extending from the shafts, a rod connected to the arms, and means for actuating one of the shafts to shift the bar to adjust the form.

JOSEPH BEHLE.

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