US168912A - Improvement in devices for changing speed - Google Patents

Improvement in devices for changing speed Download PDF

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US168912A
US168912A US168912DA US168912A US 168912 A US168912 A US 168912A US 168912D A US168912D A US 168912DA US 168912 A US168912 A US 168912A
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shaft
speed
improvement
changing speed
devices
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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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  • Figure 1 represents a top view
  • Fig. 2 a vertical longitudinal section, of my device for changfriction-wheels to a similar conically-faced disk of the shaft to be driven, the shaft of the friction-wheels being hung to boxes of a sliding and spring-acted frame, and the wheels adjusted by suitable lever mechanism.
  • A represents the driving shaft, and B the shaft which is to be run at variable speed, as required.
  • Both the drive ing-shaft A and the shaft B are provided with conically-faced disks A and B, that are connected by a longitudinal shaft, 0, with conical friction-wheels D.
  • the circumference of the friction-wheels corresponds to the flat conical faces of the shaft-disks, and remains in full contact with the same, transmitting the power from the driving-shaft to shaft B.
  • the conheating-shaft O is hung to boxes 0, which are made to slide either on a spring-acted longitudinal frame, E, or are affixed to the frame and moved therewith, as shown in the drawing.
  • the longitudinal frame E slides on lateral rods E, and is acted upon by suitable springs F, that press the conical friction-wheels firmly on the disks, to preserve the contact therewith.
  • a lateral lever, G is connected by a lever-rod, G, with the journal-box of the connecting shaft, or with the longitudinal frame E, to produce the adjustment in longitudinal direction of the transmitting frictionwheels in the disks, and thereby a change of speed, according to the position of the same thereon.
  • the friction-wheel at one end of the connecting-shaft When the friction-wheel at one end of the connecting-shaft is near the center of the driving-disk the friction-wheel at the other end is near the circumference of the disk to be driven, and revolves the same at very slow speed, the speed being increased the nearer one friction-wheel is to the circumference of thedriving-disk, and the other to the center of the disk to be driven.
  • the speed is thus regulated in an instant by setting the lever, which construction is particularly adapted for saw-mills, as the sawyer can change the speed at any time without leaving his position.

Description

*1. w. MEAD.
Device for Changing Speed.
Patented Oct- 19, 1875.
WITNESSES ATTORNEYS.
NPETERS, PNDTO LITNOGRAPHEE WASHINGTON. D. C.
UNITED STATES PATENT OFFICE.
JOSEPH W. MEAD, OF DUPONT, INDIANA.
IMPROVEMENT IN DEVICES FOR CHANGING SPEED.
Specification forming part of Letters Patent No. 168.9 12, dated October 19, 1875; application filed August 28, 1875.
To all whom it may concern:
Be it known that I, JOSEPH W. MEAD, of Dupont, in the county of Jefferson and State of Indiana, have invented a new and Improved Device for Changing Speed of Shafts, of which the following is a specification:
In the accompanying drawing, Figure 1 represents a top view, and Fig. 2 a vertical longitudinal section, of my device for changfriction-wheels to a similar conically-faced disk of the shaft to be driven, the shaft of the friction-wheels being hung to boxes of a sliding and spring-acted frame, and the wheels adjusted by suitable lever mechanism.
In the drawing, A represents the driving shaft, and B the shaft which is to be run at variable speed, as required. Both the drive ing-shaft A and the shaft B are provided with conically-faced disks A and B, that are connected by a longitudinal shaft, 0, with conical friction-wheels D. The circumference of the friction-wheels corresponds to the flat conical faces of the shaft-disks, and remains in full contact with the same, transmitting the power from the driving-shaft to shaft B. The conheating-shaft O is hung to boxes 0, which are made to slide either on a spring-acted longitudinal frame, E, or are affixed to the frame and moved therewith, as shown in the drawing. The longitudinal frame E slides on lateral rods E, and is acted upon by suitable springs F, that press the conical friction-wheels firmly on the disks, to preserve the contact therewith. A lateral lever, G, is connected by a lever-rod, G, with the journal-box of the connecting shaft, or with the longitudinal frame E, to produce the adjustment in longitudinal direction of the transmitting frictionwheels in the disks, and thereby a change of speed, according to the position of the same thereon. When the friction-wheel at one end of the connecting-shaft is near the center of the driving-disk the friction-wheel at the other end is near the circumference of the disk to be driven, and revolves the same at very slow speed, the speed being increased the nearer one friction-wheel is to the circumference of thedriving-disk, and the other to the center of the disk to be driven. The speed is thus regulated in an instant by setting the lever, which construction is particularly adapted for saw-mills, as the sawyer can change the speed at any time without leaving his position.
I am aware that it is not broadly new to change speed by means of a friction-wheel moved by a lever from one conical disk on drive-shaft to another on driven shaft; but
What I claim is The combination, with drive-shaft A and driven shaft B, having cone-disks A B, of a corresponding double-disked shaft, 0, supported in spring-held slide-bearings, as and for .the purpose specified.
JOSEPH W. MEAD.
Witnesses:
WM. D. HOUGHTON, T. T. WALKER.
US168912D Improvement in devices for changing speed Expired - Lifetime US168912A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5588933A (en) * 1993-08-23 1996-12-31 Hartman; Delbert L. Infinite ratios cant wheel transmission
US20060287153A1 (en) * 2005-06-16 2006-12-21 Ferrar Philip T Variable speed ratio transmission

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5588933A (en) * 1993-08-23 1996-12-31 Hartman; Delbert L. Infinite ratios cant wheel transmission
US20060287153A1 (en) * 2005-06-16 2006-12-21 Ferrar Philip T Variable speed ratio transmission
US7594870B2 (en) 2005-06-16 2009-09-29 Ferrar Philip T Variable speed ratio transmission

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