US2634144A - Means for securing rolls to shafts - Google Patents

Means for securing rolls to shafts Download PDF

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Publication number
US2634144A
US2634144A US168218A US16821850A US2634144A US 2634144 A US2634144 A US 2634144A US 168218 A US168218 A US 168218A US 16821850 A US16821850 A US 16821850A US 2634144 A US2634144 A US 2634144A
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Prior art keywords
roll
shaft
sleeve
rolls
key
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Expired - Lifetime
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US168218A
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John H Friedman
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National Machinery Co
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National Machinery Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/03—Sleeved rolls
    • B21B27/035—Rolls for bars, rods, rounds, tubes, wire or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/22—Making articles shaped as bodies of revolution characterised by use of rolls having circumferentially varying profile ; Die-rolling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7047—Radially interposed shim or bushing
    • Y10T403/7051—Wedging or camming
    • Y10T403/7052—Engaged by axial movement
    • Y10T403/7056—Threaded actuator

Definitions

  • This invention relates to -apparatus for metal rolling :and particularly to 'the means for securing the roll to the 'roll shaft. y
  • a rolling mill'is providedwith apair of co-operating, small diameter rolflsmounted on shafts carried in frame 3eearings so as ltoftransmit the shaft loads -to the frame-in a manner that minimizes the deection Vin the 4roll shafts :and Awherein a massive, continuousl-y rotating flywheel is operably ⁇ clutched :so'asto drivethe rolls intermittently one revolution at a-time.
  • Fig. 1 is 'a perspective 'view ⁇ of -a rolling mill showing the environment oi the roll mounting according to this invention: v
  • Fig. 2 is an ⁇ end ⁇ elevation off'the roll :shaft showing the meansprovided for ataching the roll to the roll shaft;
  • Fig. 3 is a sectional view showing the details of the roll attachment.
  • Fig. 4 is a ⁇ sectional view ⁇ with 'parts lbroken away disclosing ⁇ the means used to axially adjust the roll lrelative to Athe shaft.
  • the press embodying the invention is shown Vwherein the-frame I0 supports a pair of roll shafts II and I2 VVVthe ends of which project from ⁇ the frame to support 'the overhanging rolls I3 and I4 at a height ⁇ convenient for the operator.
  • the lower -or driven roll shaft -II extends out beyond the other side of the frame I and supports rotatably lthereon a harmonye iiywheel Iii.
  • Aring gear I'I -xed to the nywheel is attached to be Acontinuously Arotated by the motor I3 indicated ⁇ in phantom outline within the frame Iii).
  • the flywheel ⁇ I6 andthe shaft II are provided withco-operating Yclutch memberssothat the rotation of the iywheel may be imparted to the drive shaft ISI.
  • the driven shaft I I islalso providedwith abrake so arranged with respect .to Jthe clutch that the ibrake is released ⁇ when the clutch .is engaged and the brake is applied when the Vclutch is disengaged.
  • the clutch and brake and l.control therefor 4 employed .in carrying out the ⁇ rollingloper-.ation is disclosed in said (zo-pending divisional applications.
  • 4A compressed air supply tank le@ is mounted on the frame If and-is utilized lforfpovver ,to actuate the brake and :clutch .appara-tus.
  • the lfoot treadle 2-I yis provided to permit the Voperator to control the operation of the .clutch and brake.
  • the lower driven roll ⁇ II is supported in the frame Il? and has fixed thereto a gear 22 inmes-h lwith ⁇ a similar gear l23 fixed on the upperroll shaft -I2
  • the upper roll shaft -I2ris1 alsosup ported by the frame Iii.
  • the ⁇ guides 2'4 and' 2'5 provide a working table on which the blank slides and a stop 21 limits the insertion of the blank through the rolls.
  • the outer end of the roll shaft is tapered as at 29 to receive a split collar 30 which is formed with an internal taper correspondingv vto the shaft taper.
  • the collar is split axially as indicated at 3I and is notched at opposed points on its diameter to receive the key 32 retained by the cap screw 33 in a transverse notch 34 in the end of -the roll shaft.
  • the end portions of the key 32 overhang the notched portions of the collar 39 so that the drawing of the key into position in the shaft with the cap screw 33 causes the split c-ollar to be expanded by the ltaper 29 on the shaft so as to establish a secure binding fit with the surrounding roll I3.
  • the outer surface of the roll I3 is provided with internally threaded bores 36 in alignment with cap screw openings 31 provided in the flange 38 of the collar 30. As the cap screws 39 are threaded into the bores 36 the collar 30 is drawn axially toward the roll I3.
  • the key 32 carried by the end of the roll shaft is provided with threaded openings 4I at the outer end portion of the key where such outer end portions overhang the end of the roll I3 as indicated in Fig. 4.
  • Jack screws such as 42 may be inserted in the threaded openings 4I and by drawing down on these jack screws 42 pressure may be exerted on the roll I3 so as to effect relative axial movement between the roll I3 and the collar 39. It will be understood that in making such adjustments between the collar and the roll the screws 39 should be loosened to permit the required axial motion.
  • the flange portion of the collar 30 also includes spaced threaded apertures 4G so that cap screws may be used therein to serve as jack screws to facilitate the axial motion of the collar with respect to the roll for servicing an adjustment.
  • the key 32 By providing an expandable collar working against a taper extreme radial frictional forces can be developed which will carry extremely large rotational forces and shock loads.
  • the key 32 also carries a portion of the load transmitted from the shaft to the roll and supplements the strength of the connection between the roll and the shaft.
  • the roll and sleeve may be loosely assembled and the key 32 drawn into position as shown. It will be observed that the outer end portions of the key 32 prevent the roll from moving axially outward on the shaft as limited by the adjusting screws 42. Since the roll is thus limited in its outward movement, drawing up on the adjusting screws 39, will force the sleeve inwardly so as to expand the sleeve along the taper of -the shaft so that the roll I3 and its complementary roll I4 may be vertically aligned in proper rolling position.
  • connection between the '4 shaft I2 and the roll I4 is, of course, the same as that described above.
  • Means to secure a wheel to a shaft having a tapered end comprising a cylindrical sleeve, said wheel provided with an opening, said sleeve having an interior taper corresponding to the taper of the shaft and being slotted at one side so that the sleeve may be expanded, the exterior of said sleeve being cylindrical and having an outer diameter corresponding substantially to the inner diameter of said opening in the wheel, a keyway formed transversely at the end of said tapered shaft, diametrically opposed notches in the sleeve and wheel forming a continuation of the keyway, an abutment key arranged in said keyway, said abutment key extending beyond the shaft keyway at opposite sides of the shaft so that the ends of the abutment key are disposed in said notches, and means movable longitudinally of the shaft comprising adjusting screws operatively connecting the key abutment, wheel and sleeve whereby the wheel and sleeve may be adjusted longitudinally with respect to the shaft.
  • Means to secure a wheel to a shaft having a tapered end comprising a cylindrical sleeve, said wheel provided with an opening, said sleeve having an interior taper corresponding to the taper of the shaft and being slotted at one side so that the sleeve may be expanded, the exterior of said sleeve being cylindrical and having an outer diameter corresponding substantially to the inner diameter of said opening in the wheel, a keyway formed transversely at the end of said tapered shaft, diametrically opposed notches in the sleeve and wheel forming a continuation of the keyway, an abutment key arranged in said keyway, said abutment key having portions extending radially beyond the shaft keyway disposed in said notches, and means movable longitudinally of the shaft comprising adjusting screws operatively connecting the said key abutment portions, and wheel, and a flange on said sleeve whereby the sleeve may be adjusted longitudinally of the shaft.

Description

i E. I 3o 4 v I /3 l j 46 'qu 'im 46 3g 37 April 7, 1953 MEANS FOR SECURING ROLLS TO SHAFTS Filed June 15, 1950 BY I E/CHE Y, WA 7 rs, Epasfz ro/vuff/vf/vw A TT'OENEKS J. H. FRIEDMAN 2,634,144 v Patented Apr. 7, 11953 MEANS FOB SECURING ROLLS TD .SHAFTS John H. Friedman, Tiffin, Ohio, assigner toThe National Machinery Company, :'Iiin, IOhio, a
corporationof ,Ohio
Application June' 15, 1950, serialNo. '168,218
IZ-Claims.
This invention relates to -apparatus for metal rolling :and particularly to 'the means for securing the roll to the 'roll shaft. y
'Tn `connection with the pressing `or `forging of mimerous articles, it 'has vbeen recognized that it would be 'desirable 'to employ va blarikwherein the Tod'orstrap stock was worked prior to forging and pressing so as to redistribute 'the volume of -metai 4in the rod vor 4strap stock to provide a blank having'the `general configuration of the artioleto 'be 'forged 'or pressed. For instance in connection 'withthe forging of a 4double ended dat wrenonitis recognized that it would bedesirable toprovide fa vpreformed blank wherein the rstock width `available in 'the two end portions of the blankiexceeds 'that intermediate the ends so Aas to reduce-the volume fof the flow required in 'the 'forging operation. According to the present invention a rolling mill'is providedwith apair of co-operating, small diameter rolflsmounted on shafts carried in frame 3eearings so as ltoftransmit the shaft loads -to the frame-in a manner that minimizes the deection Vin the 4roll shafts :and Awherein a massive, continuousl-y rotating flywheel is operably `clutched :so'asto drivethe rolls intermittently one revolution at a-time. Large reductions may be effected in Leach roll pass and `the blank being rolled is characterized by -a longitudinal movement of themetal at the central axis of the blank -ex- -ceeding the 'longitudinal movement ofthe metal at the sur-tace of the blank.
Reference is made to my cio-'pending .application :Serial No. 42,791, filed August 6, 1948, which discloses small vdiameter rolls .controlled so as to be operated in a cyclic one revolution manner and 'of vwhich 4the instant application is continuation in part. Reference is also made'to'my cli-'pending application .Serial No.. 294,176, filed June 18, 1952, for a Rolling Mill which is a division vof :the instant application and to my application Serial Na-294,178, led'June 18, 1.952, for fRoll Adiustment Apparatus which is a division of the instant application and to .my co-pending application ySerial No. 294,177, iiled June 18, 1952, ior
7,Die Rolling Method which .isl a .division of the thev shaft by .a tapered split sleeve arrangement g Y 2 which permits the adjustment ol? the rollaxlally with respect to the "roll shaft.
It is a primary object oi thisinventionito ,provide 'amountingmeans for attaching -a roll to a shaft capable vof -withstand-ing extreme shock and driving loads.
It is another object of this invention to provide a roll mounting means which permits axial adjustment of the roll with respect to the rollshafft.
The foregoing and other objects and `advantages willbecome apparentinview -of the following description taken in `coniuncton =`with the drawings, wherein:
Fig. 1 is 'a perspective 'view `of -a rolling mill showing the environment oi the roll mounting according to this invention: v
Fig. 2 is an `end `elevation off'the roll :shaft showing the meansprovided for ataching the roll to the roll shaft;
Fig. 3 is a sectional view showing the details of the roll attachment; and
Fig. 4 is a `sectional view `with 'parts lbroken away disclosing `the means used to axially adjust the roll lrelative to Athe shaft.
Referring to the drawings, the press embodying the invention is shown Vwherein the-frame I0 supports a pair of roll shafts II and I2 VVVthe ends of which project from `the frame to support 'the overhanging rolls I3 and I4 at a height `convenient for the operator. lThe lower -or driven roll shaft -II extends out beyond the other side of the frame I and supports rotatably lthereon a masive iiywheel Iii. Aring gear I'I -xed to the nywheel is attached to be Acontinuously Arotated by the motor I3 indicated `in phantom outline within the frame Iii). The flywheel `I6 andthe shaft II are provided withco-operating Yclutch memberssothat the rotation of the iywheel may be imparted to the drive shaft ISI.. The driven shaft I I islalso providedwith abrake so arranged with respect .to Jthe clutch that the ibrake is released `when the clutch .is engaged and the brake is applied when the Vclutch is disengaged. The clutch and brake and l.control therefor 4employed .in carrying out the `rollingloper-.ation is disclosed in said (zo-pending divisional applications.
4A compressed air supply tank le@ is mounted on the frame If and-is utilized lforfpovver ,to actuate the brake and :clutch .appara-tus. The lfoot treadle 2-I yis provided to permit the Voperator to control the operation of the .clutch and brake. The lower driven roll `II is supported in the frame Il? and has fixed thereto a gear 22 inmes-h lwith `a similar gear l23 fixed on the upperroll shaft -I2 The upper roll shaft -I2ris1alsosup ported by the frame Iii. The `guides 2'4 and' 2'5 provide a working table on which the blank slides and a stop 21 limits the insertion of the blank through the rolls.
Since the loads and strains produced in the rolls during the metal forming are extremely great, a rigid, rugged mounting means is necessary to secure the rolls on the shafts II and I2.
To transmit the roll shaft rotation to the rolls the outer end of the roll shaft is tapered as at 29 to receive a split collar 30 which is formed with an internal taper correspondingv vto the shaft taper. The collar is split axially as indicated at 3I and is notched at opposed points on its diameter to receive the key 32 retained by the cap screw 33 in a transverse notch 34 in the end of -the roll shaft. The end portions of the key 32 overhang the notched portions of the collar 39 so that the drawing of the key into position in the shaft with the cap screw 33 causes the split c-ollar to be expanded by the ltaper 29 on the shaft so as to establish a secure binding fit with the surrounding roll I3. The outer surface of the roll I3 is provided with internally threaded bores 36 in alignment with cap screw openings 31 provided in the flange 38 of the collar 30. As the cap screws 39 are threaded into the bores 36 the collar 30 is drawn axially toward the roll I3.
To provide for accurate axial adjustment of the rolls with respect to the roll shaft thus insuring correct vertical alignment of the rolls the key 32 carried by the end of the roll shaft is provided with threaded openings 4I at the outer end portion of the key where such outer end portions overhang the end of the roll I3 as indicated in Fig. 4. Jack screws such as 42 may be inserted in the threaded openings 4I and by drawing down on these jack screws 42 pressure may be exerted on the roll I3 so as to effect relative axial movement between the roll I3 and the collar 39. It will be understood that in making such adjustments between the collar and the roll the screws 39 should be loosened to permit the required axial motion.
Because the bore 43 in the roll I3 is cylindrical the axial position of the roll I3 relative to the collar 30 does not affect the operation of this mounting means.
The flange portion of the collar 30 also includes spaced threaded apertures 4G so that cap screws may be used therein to serve as jack screws to facilitate the axial motion of the collar with respect to the roll for servicing an adjustment.
By providing an expandable collar working against a taper extreme radial frictional forces can be developed which will carry extremely large rotational forces and shock loads. Of course, the key 32 also carries a portion of the load transmitted from the shaft to the roll and supplements the strength of the connection between the roll and the shaft.
To assemble the roll I3 on the shaft II, the roll and sleeve may be loosely assembled and the key 32 drawn into position as shown. It will be observed that the outer end portions of the key 32 prevent the roll from moving axially outward on the shaft as limited by the adjusting screws 42. Since the roll is thus limited in its outward movement, drawing up on the adjusting screws 39, will force the sleeve inwardly so as to expand the sleeve along the taper of -the shaft so that the roll I3 and its complementary roll I4 may be vertically aligned in proper rolling position.
The structure of the connection between the '4 shaft I2 and the roll I4 is, of course, the same as that described above.
Having completed a detailed description of a preferred embodiment of the present invention so that others skilled in the art may be able to understand and practice the same, I state that what I desire to secure by Letters Patent is not limited by said preferred embodiment but rather is defined in what is claimed.
What is claimed is:
1. Means to secure a wheel to a shaft having a tapered end comprising a cylindrical sleeve, said wheel provided with an opening, said sleeve having an interior taper corresponding to the taper of the shaft and being slotted at one side so that the sleeve may be expanded, the exterior of said sleeve being cylindrical and having an outer diameter corresponding substantially to the inner diameter of said opening in the wheel, a keyway formed transversely at the end of said tapered shaft, diametrically opposed notches in the sleeve and wheel forming a continuation of the keyway, an abutment key arranged in said keyway, said abutment key extending beyond the shaft keyway at opposite sides of the shaft so that the ends of the abutment key are disposed in said notches, and means movable longitudinally of the shaft comprising adjusting screws operatively connecting the key abutment, wheel and sleeve whereby the wheel and sleeve may be adjusted longitudinally with respect to the shaft.
2. Means to secure a wheel to a shaft having a tapered end comprising a cylindrical sleeve, said wheel provided with an opening, said sleeve having an interior taper corresponding to the taper of the shaft and being slotted at one side so that the sleeve may be expanded, the exterior of said sleeve being cylindrical and having an outer diameter corresponding substantially to the inner diameter of said opening in the wheel, a keyway formed transversely at the end of said tapered shaft, diametrically opposed notches in the sleeve and wheel forming a continuation of the keyway, an abutment key arranged in said keyway, said abutment key having portions extending radially beyond the shaft keyway disposed in said notches, and means movable longitudinally of the shaft comprising adjusting screws operatively connecting the said key abutment portions, and wheel, and a flange on said sleeve whereby the sleeve may be adjusted longitudinally of the shaft.
JOHN H. FRIEDMAN.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date Re. 22,388 Brenkert Nov. 2, 1942 1,855,710 Exsergian Apr. 26, 1932 2,102,356 Cummins Dec. 14, 1937 2,141,101 Webster Dec. 20, 1938 2,193,231 Gibbons Mar. 12, 1940 2,291,099 Olivieri July 28, 1942 2,421,254 Froelich May 27, 1947 2,452,266 Scharff Oct. 26, 1948 2,515,303 Isnard July 18, 1950 2,518,785 Honk Aug. 15, 1950 FOREIGN PATENTS Number Country Date 11,314 Great Britain Aug. 18, 1887 78,362 Germany Mar. 23, 1894 317,469 Great Britain of 1929
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899222A (en) * 1959-08-11 Shaft end roll mounting
US2950934A (en) * 1956-08-06 1960-08-30 Kocks Gmbh Friedrich Knockout axle assembly
US3063743A (en) * 1959-02-19 1962-11-13 Skf Svenska Kullagerfab Ab Press fitting joint
DE1254941B (en) * 1965-12-03 1967-11-23 Hasenclever Ag Maschf Forging roll with one-piece, radially removable segment tool
US3514137A (en) * 1968-10-18 1970-05-26 Kennametal Inc Roll for rod mill and mounting arrangement therefor
US3514136A (en) * 1968-10-18 1970-05-26 Kennametal Inc Roll for rod mill and mounting arrangement therefor
US3727957A (en) * 1971-08-23 1973-04-17 Kennametal Inc Forming roll
US4053244A (en) * 1975-10-06 1977-10-11 Ingersoll-Rand Company Compression coupling means for a raise boring head
US4247000A (en) * 1979-07-16 1981-01-27 Ppg Industries, Inc. Ceramic conveyor rolls with metal end caps clamped thereto
US4626114A (en) * 1985-09-23 1986-12-02 Emerson Electric Co. Single tapered bushing for shaft mount
US5374136A (en) * 1992-12-11 1994-12-20 A-Dec. Inc. Mounting mechanism
US5558457A (en) * 1994-03-02 1996-09-24 Mullenberg; Ralph Chucking device for fixing a hollow shaft to a shaft

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE78362C (en) * W. KOTZUM, Neuhütten, Böhmen, u. R. HIRSCH, Pilsen Method and device for the production of workpieces with a tapering cross section by rolling
GB317469A (en) * 1928-08-18 1931-01-02 Hugo Junkers Improvements in and relating to the mounting of machine parts on shafts in a manner suitable for the transmission of rotational forces
US1855710A (en) * 1929-07-24 1932-04-26 Budd Edward G Mfg Co Method of making hinges
US2102356A (en) * 1934-03-21 1937-12-14 Alden C Cummins Die-rolling mill
US2141101A (en) * 1936-04-23 1938-12-20 Samuel B Webster Die rolling
US2193231A (en) * 1937-06-04 1940-03-12 Vincent J Gibbons Process of rolling metallic sheet and plate materials
US2291099A (en) * 1940-02-10 1942-07-28 Borg Warner Method of making toothed bars
USRE22388E (en) * 1943-11-02 Wheel mounting
US2421254A (en) * 1944-08-24 1947-05-27 Torrington Mfg Co Wheel and shaft assembly means
US2452266A (en) * 1944-06-07 1948-10-26 Nat Tube Co Rolling mill roll
US2515303A (en) * 1942-06-05 1950-07-18 Isnard Freres Soc Ets Arrangement for rapidly mounting driving or driven parts on their shafts
US2518785A (en) * 1944-08-12 1950-08-15 Carnegie Illinois Steel Corp Undulating roll

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE78362C (en) * W. KOTZUM, Neuhütten, Böhmen, u. R. HIRSCH, Pilsen Method and device for the production of workpieces with a tapering cross section by rolling
USRE22388E (en) * 1943-11-02 Wheel mounting
GB317469A (en) * 1928-08-18 1931-01-02 Hugo Junkers Improvements in and relating to the mounting of machine parts on shafts in a manner suitable for the transmission of rotational forces
US1855710A (en) * 1929-07-24 1932-04-26 Budd Edward G Mfg Co Method of making hinges
US2102356A (en) * 1934-03-21 1937-12-14 Alden C Cummins Die-rolling mill
US2141101A (en) * 1936-04-23 1938-12-20 Samuel B Webster Die rolling
US2193231A (en) * 1937-06-04 1940-03-12 Vincent J Gibbons Process of rolling metallic sheet and plate materials
US2291099A (en) * 1940-02-10 1942-07-28 Borg Warner Method of making toothed bars
US2515303A (en) * 1942-06-05 1950-07-18 Isnard Freres Soc Ets Arrangement for rapidly mounting driving or driven parts on their shafts
US2452266A (en) * 1944-06-07 1948-10-26 Nat Tube Co Rolling mill roll
US2518785A (en) * 1944-08-12 1950-08-15 Carnegie Illinois Steel Corp Undulating roll
US2421254A (en) * 1944-08-24 1947-05-27 Torrington Mfg Co Wheel and shaft assembly means

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899222A (en) * 1959-08-11 Shaft end roll mounting
US2950934A (en) * 1956-08-06 1960-08-30 Kocks Gmbh Friedrich Knockout axle assembly
US3063743A (en) * 1959-02-19 1962-11-13 Skf Svenska Kullagerfab Ab Press fitting joint
DE1254941B (en) * 1965-12-03 1967-11-23 Hasenclever Ag Maschf Forging roll with one-piece, radially removable segment tool
US3514137A (en) * 1968-10-18 1970-05-26 Kennametal Inc Roll for rod mill and mounting arrangement therefor
US3514136A (en) * 1968-10-18 1970-05-26 Kennametal Inc Roll for rod mill and mounting arrangement therefor
US3727957A (en) * 1971-08-23 1973-04-17 Kennametal Inc Forming roll
US4053244A (en) * 1975-10-06 1977-10-11 Ingersoll-Rand Company Compression coupling means for a raise boring head
US4247000A (en) * 1979-07-16 1981-01-27 Ppg Industries, Inc. Ceramic conveyor rolls with metal end caps clamped thereto
US4626114A (en) * 1985-09-23 1986-12-02 Emerson Electric Co. Single tapered bushing for shaft mount
US5374136A (en) * 1992-12-11 1994-12-20 A-Dec. Inc. Mounting mechanism
US5558457A (en) * 1994-03-02 1996-09-24 Mullenberg; Ralph Chucking device for fixing a hollow shaft to a shaft

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