Manufacturers Index - Israel H. Johnson Jr. & Co.
Israel H. Johnson Jr. & Co.
Philadelphia, PA, U.S.A.
Manufacturer Class:
Metal Working Machinery
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759,111
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May. 03, 1904
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Variable Speed Gear for Motor Diven Lathes or Other Tools
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Israel H. Johnson Jr. |
Philadelphia, PA |
Abstract:
The object of my invention is to provide means whereby a lathe or similar tool can be driven from an electric motor through change gearing, which can be quickly and accurately shifted so as to vary the speed of the spindle without altering the speed of the armature shaft of the motor.
While my invention is especially designed to be used in connection with an electric motor, it will be understood that it can be used in connection with any suitable motor in which it is desired that the speed of the main shaft of the motor should not be varied.
Claims:
1. The combination of a driving-shaft, a pinion thereon, a driven shaft, a gear wheel through which motion is imparted to said driven shaft, a bearing-disk, a-supporting structure therefor, one of the members comprised by the structure and the disk having a guiding-flange and the other a recess therefor, a series of shafts carried by the bearing-piece, a plurality of gears on each of said shafts, one set of said gears being placed to mesh with the driving-shaft pinion and the other of said sets of gears being placed to mesh with the gear-wheel on the driven shaft, said parts being so arranged that when one shaft and its gears are entrain, the remaining shafts are out of action, substantially as described.
2. The combination of a driving-shaft having a pinion, a driven shaft, a gear-wheel for driving the same, a two-part casing, a bearing disk mounted in the casing, means for clamping together the parts of the casing to prevent motion of the bearing-disk, means for moving said disk, shafts carried by the disk, each having a plurality of gear-wheels, one set of said gears being placed to mesh with the pinion on said driving-shaft and the other set being placed to mesh with the gear of the driven shaft, substantially as described.
3. The combination of a supporting structure, a bearing-disk mounted thereon, a series of shafts carried by the bearing-disk, a plurality of gears on each of the shafts, a driving shaft having a pinion placed to be engaged by one set of said gears, a driven shaft having a gear placed to be engaged by the second set of said gears, there being lubricant-ducts in the bearing-disk communicating with the bearings of each shaft, a lubricator on the supporting structure having a conduit placed to align with the duct of that particular shaft which is entrain with the pinions on the driving-shaft and with the gear on the driven shaft, substantially as described.
4. The combination of a driving-shaft having a pinion thereon, a driven shaft, a gearwheel for driving said driven shaft, a two-part casing, a bearing-disk mounted in the casing, means for clamping the casing to the bearing disk, an annular rack on the bearing-disk, a pinion on one portion of the casing meshing with the teeth of the rack so as to turn the bearing-disk, shafts carried by the bearing disk, each shaft having a gear-wheel at each end, one set of gears meshing with the driving-shaft pinion and the other meshing with the gear of the driven shaft, substantially as described.
5. The combination of a driving-shaft, a pinion thereon, a driven shaft, a gear for driving said shaft, a two-part casing, a bearing-disk mounted in the casing, said casing being eccentric to the driving-shaft, a series of shafts on the casing, each shaft having a gear at each end, the several gears varying in diameter and so proportioned that any one of the shafts can be moved into operative position with the driving-shaft and the driven shaft, means for turning the bearing-disk, and means for looking the two-part casing after the disk is turned, substantially as described.
6. The combination of a casing, a bearing disk mounted in the casing, a series of transmitting-spindles carried by the said bearing disk, gears on each end of said spindles, a driving-shaft having a pinion with which one set of gears mesh, a driven spindle having a gear with which the other set of gears mesh, lubricant-ducts in the bearing-disk communicating with the bearings for each transmitting-spindle, a fixed lubricator on the casing arranged to align with the duct of the transmitting-spindle which is entrain with the driving-shaft and driven spindle, substantially as described.
7. The combination of a driven shaft, a sleeve thereon, a gear on the sleeve, a driving-shaft, a pinion thereon, a two-part casing, a bolt and handled nut for clamping the two parts of the casing together, a circular bearing-disk mounted in the casing and having an annular rib thereon fitting an annular recess in the casing, an annular rack on the bearing-disk, a pinion with which the rack engages, a handled shaft for turning said pinion, a spring-pin carried by the casing and arranged to enter notches in the bearing disk, a series of shafts extending through the bearing-disk, a gear-wheel on each end of each shaft, the said gear-wheels varying in diameter, the driving-shaft being eccentric to the bearing-disk so that only one shaft of the bearing-disk will be in motion when power is transmitted from the driving to the driven shaft, substantially as described.
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807,274
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Dec. 12, 1905
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Gearing for Lathes or Other Tools
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Israel H. Johnson Jr. |
Philadelphia, PA |
Abstract:
My invention relates to the feed mechanism of the tool-carriage of a lathe or other tool in which the speed of the moving part has to be varied according to the work.
The object of my invention is to make a compact and-easily-operated change-gear by which any number of changes can be made very quickly and without detaching the gearing from the lathe.
Claims:
1. The combination in change-gearing, of a driving-shaft, a gear-wheel mounted on the shaft so as to turn with it but to slide there on, an arm, a gear-wheel carried by the arm and meshing with the gearwheel on the shaft, a driven shaft, a series of gears secured to said shaft, said gears differing in diameter, a casing inclosing the said gears, a perforated plate secured to the casing and having a series of notches corresponding to the gears, the said arm extending under the casing and having a portion bent relatively to the remainder, with a pin arranged to be projected into any one of the perforations in the plate, and a lug also on the arm arranged to enter any one of the notches to bring the arm in proper alignment with a perforation and with the gear corresponding thereto, substantially as described.
2. The combination of a driving-shaft having a longitudinal groove therein, a gearwheel mounted on the shaft and having a spline entering the groove so that the gearwheel will turn with but slide on the s aft, an arm mounted on the extended hub of the gear-wheel and bent substantially as described, a driven shaft, a series of gears secured to said shaft, said gears differing in diameter, an independent casing inclosing the gears and having the bearings for the two shafts, a stud on the arm, a gear-wheel carried by the stud and meshing with the gearwheel on the driving-shaft, said gear-wheel on the stud being movable to mesh with any one of the gears on the driven shaft, said arm extending under the frame, a notched and perforated plate secured to the frame, a lug on the arm arranged to enter the notches and to limit the movement of the arm, and a pin carried by the arm and arranged to enter any one of the perforations in the plate, substantially as described.
3. The combination in change-gearing of a driving-spindle, means operatively connecting said spindle and shaft including a driven shaft, a series of ears differing in diameter, a shaft, a gear splined to said shaft and arranged to slide thereon, an arm, an intermediate gear carried thereby and arranged to mesh with any one of a series of gears and with the gear on the spline-shaft, means for adjusting said arm, with a plurality of sets of change-gearing between said mechanism and the driving-spindle, each of said sets including a plurality of shafts, intermeshing gears, of which certain are loose on their shaft, a sliding rod, and a key for connecting any one of the loose gears with its shaft, substantially as described.
4. The combination in change-gearing of a driving-spindle, a driven shaft, a series of gears differing in diameter, a shaft, a gear splined to said shaft and arranged to slide thereon, an arm, an intermediate gear carried thereby and arranged to gear with any one of the series of gears and with the gear on the spline-shaft, means for adjusting said arm, two sets of change-gearing between the said mechanism and the driving-spindle, and reverse mechanism between said two sets of change-gearing, substantially as described.
5. The combination in change-gearing of a supporting-frame, a driving-spindle, a shaft geared to the said spindle, three change gears loosely mounted on the shaft, a key-rod constructed to lock any one of the gears to the said shaft, a stud mounted on the frame, three gears loose on the said stud and meshing with the three gears on the shaft, a reverse-lever, two gears therefor, means for locking the reverse-lever in position, a bearing-frame, a shaft carried thereby, a gearwheel for said shaft constructed to mesh with either one of the wheels on the reverse lever, a gear-wheel and a pinion on the said shaft, an intermediate shaft, a gear-wheel and pinion loose thereon, a key-rod constructed to lock either the gear or pinion to the shaft, said shaft having a keyway, a gearwheel mounted on said intermediate shaft, a key entering said keyway so that it will turn with the shaft but be free to slide thereon, an arm pivoted to the shaft, an intermediate gear carried by said arm, a driven shaft, a series of gears differing in diameter on said shaft, said arm being movable to bring its gear into line with any one of the gears, and means for locking the arm in position, substantially as described.
6. The combination in change-gearing, of a driving-spindle, a shaft geared to the said spindle, three change-gears loosely mounted on the shaft, a key-rod constructed to look any one of the gears to the said shaft, a stud, three gears loose on the said stud and meshing with the three gears on the shaft, a reverse lever, two gears therefor, means for locking the reverse-lever in position, a bearing-frame, a shaft carried thereby, a gearwheel for the shaft placed to mesh with either one of the gears of the reverse-lever, a gear-wheel and a pinion on the said latter shaft, an intermediate shaft, a gear-wheel and pinion loose thereon, a key-rod constructed to lock either the gear or pinion to the shaft, said shaft having a keyway, a gearwheel mounted on said shaft, a key for said wheel entering the keyway so that it will turn with the shaft but be free to slide thereon, an arm pivoted to the shaft, an intermediate gear carried by said arm, a driven shaft, a series of gears differing in diameter therefor, said arm being movable to bring its gear into line with any one of the gears, and means for locking the arm in position, a screw-shaft and reversing mechanism between the screw-shaft and the driven shaft, substantially as described.
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