US460284A - Device for varying the speed of machinery - Google Patents

Device for varying the speed of machinery Download PDF

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US460284A
US460284A US460284DA US460284A US 460284 A US460284 A US 460284A US 460284D A US460284D A US 460284DA US 460284 A US460284 A US 460284A
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speed
varying
machinery
arms
disks
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
    • F16H15/04—Gearings providing a continuous range of gear ratios
    • F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
    • F16H15/08—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B is a disc with a flat or approximately flat friction surface
    • F16H15/14—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B is a disc with a flat or approximately flat friction surface in which the axes of the members are parallel or approximately parallel

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  • the object of my invention is to provide means for quickly varying the speed of machinery through a large range of speed and in an efficient and practical manner.
  • the ordinary face-Wheel and friction-roller are in common use; but no large amount of power can be transmitted by this means, as the friction is excessive.
  • the range of speed is also limited. My invention obviates this difficulty in the manner set forth in the following specification.
  • Figure 1 shows a side elevation of the device
  • Fig. 2 an epd elevation of the device
  • Fig. 3 the p an.
  • the brackets B B attached to base A, carry shafts J and K, either one of which may be the driving-shaft.
  • shafts J and K On the shafts J and K are mounted disks E and D.
  • the arms M M which are supported on the shaft N, carry journals 0 C, supporting the friction-rollers F and G, which bear on opposite sides of the disks O and D.
  • the shaft Nis adjustable to any desired point longitudinally by means of an arm or lever R, as is usual in this class of devices, thus varying the acting radii of the disks D and E.
  • Secured to one of the arms M Secured to one of the arms M is an outWardly-projeoting rod 0, which passes through the other arm. The outer end of this rod is provided with a nut or head P.
  • a coiled spring L embraces this rod, one end of which bears against one of the arms, while the other end abuts against the nut or head P, whereby the friction-rollers F G, carried by said arms, are pressed against the disks 0 D.
  • the disks D and E, and also the rollers F and G, may be of any suitable material.
  • journal-bearings O O are not rigidly connected with the arms M M, but are at tached by means of a pin-joint, so as to be free to oscillate slightly, thus allowingeach roller to bear on the disks D and E with equal pressure.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Description

(No Model.) 2 Sheets-Sheet l.
G. M. CONRADSON.
DEVICE FOR VARYING THE SPEED OF MACHINERY.
No. 460,284. Patented Sept. 29, 1891.
dilornqy (Nd Model.) 2 Sheets-Sheet 2.
O. M. GONRADSON. DEVICE FOR VARYING THE SPEED OF MACHINERY.
No. 460,284. Patented Sept. 29, 1891..
@IIIHIIWIMIHIHJE will"? s v n UNITED STATES PATENT OEEIcE.
CONRAD M. OONRADSON, OF MADISON, XVISOONSIN.
DEVICE FOR VARYING THE SPEED OF MACHINERY.
SPECIFICATION forming part of Letters Patent No. 460,284, dated September 29, 1891. Application filed January 6, 1891. Serial No. 376,836. (No model.)
To all whom it may concern:
Be it known that I, CONRAD M. CONRADSON, a citizen of the United States, and a resident of Madison, in the county of Dane and State of WVisconsin, have invented certain newand useful Improvements in Devices for Varying the Speed of Machinery; and Ido hereby declare that the following is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.
The object of my invention is to provide means for quickly varying the speed of machinery through a large range of speed and in an efficient and practical manner. The ordinary face-Wheel and friction-roller are in common use; but no large amount of power can be transmitted by this means, as the friction is excessive. The range of speed is also limited. My invention obviates this difficulty in the manner set forth in the following specification.
In the accompanying drawings, Figure 1 shows a side elevation of the device, Fig. 2 an epd elevation of the device, and Fig. 3 the p an.
The brackets B B, attached to base A, carry shafts J and K, either one of which may be the driving-shaft. On the shafts J and K are mounted disks E and D. The arms M M, which are supported on the shaft N, carry journals 0 C, supporting the friction-rollers F and G, which bear on opposite sides of the disks O and D. The shaft Nis adjustable to any desired point longitudinally by means of an arm or lever R, as is usual in this class of devices, thus varying the acting radii of the disks D and E. Secured to one of the arms M is an outWardly-projeoting rod 0, which passes through the other arm. The outer end of this rod is provided with a nut or head P. A coiled spring L embraces this rod, one end of which bears against one of the arms, while the other end abuts against the nut or head P, whereby the friction-rollers F G, carried by said arms, are pressed against the disks 0 D.
The disks D and E, and also the rollers F and G, may be of any suitable material.
The journal-bearings O O are not rigidly connected with the arms M M, but are at tached by means of a pin-joint, so as to be free to oscillate slightly, thus allowingeach roller to bear on the disks D and E with equal pressure. I
The action of the device is obvious. Motion being communicated to the shaft J, it is communicated to the shaft K at a velocity depending on the position of the rollers F and G.
Having thus described my invention, whatI Wish to claim by Letters Patent is In a variable-speed driving-gear, the combination, With the disks D and E, of the longi tudinally-movable shaft N, the arms M M, pivoted on said shaft, the friction-rollers F and G, carried by said arms, the rod 0, secured to one of said arms and passingthrough the other arm, the nut or head on said rod, and the coiled spring encircling said rod, substantially as described. v
In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.
CONRAD M. OONRADSON.
Witnesses:
WV. R. BAGLEY, D. O. WooDWARD.
US460284D Device for varying the speed of machinery Expired - Lifetime US460284A (en)

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