US1081799A - Friction-gearing. - Google Patents

Description

G. N. WHIPPLE.

FRICTION GEARING.

APPLICATION FILED MAY 23, 1912.

1,081,799. Patented Dec. 16, 1913.

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Aorrzeya C. N. WHIPPLE.

FRICTION GEARING.

APPLIOATION FILED MAY 23,.1912.

. 1,081,799. Patented Dec. 16, 1913.

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A tzforn eyfi CHARLES N. WHIPPLE, OF GRANGEVILLE, IDAHO.

ERICTION-GEARING.

Specification of Letters Patent.

17a tented Dec. 16, 1913.

Application filed May 23, 1912. Serial No. 699,117.

To aZZ whom 2'?! may concern Be it known that I, Cimmmzs N. lViiir- PIE, a citizen of the United States, and a resident of Grangcvillc, in the county of Idaho, State of Idaho, have invented a new and useful lmprovemcut in l riction-Gcaring, of which the following is a speciti cation.

My ii'ivention is an improvement in friction gearing, and has for its object the provision of a simple, lIIOXPOI'ISlVG device of the character specified, wherein means is provided for connecting a driving and a driven shaft by means of which the relative speed of the shafts may be varied without stopping or slowing either, and without any danger of breakage, stripping gears or the like.

In the drawings: Figure l. is a top plan view of the improved mecl'ianism; Fig. 2 is a section on the line 2- of Fig. 1; l ig. 3 is a side view; Fig. l is a side view of the shaft for moving the guide bar; Fig. 5 is a side view of one of the connecting wheels; and, Fig. 6 is a section on the line 6--6 of Fig.

The present embodiment of the invention is shown supported by a substantially rectangular open frame, comprising end bars 1, and side bars 2, and a cross bar 3 arranged parallel with the end bars, and near one of the said end bars. Three shafts 1-, 5 and (S are jonrnaled in bearings 7 on the cross bar 3 and the end member 1 remote from the cross bar, and the said shafts are parallel and spaced apart laterally from each other. A cone pulley is secured to each shaft inside the frame, the pulleys S and 10 on shafts 4t and 6 being similarly arranged, and with. their arge ends or base toward bar 3, while pulley 9 on shaft 5 is oppositely arranged, having its small end toward the said cross bar. The shafts 4, 5 and 6 are so s tiaced from each other that a considerable space obtains between the adjacent pulleys. Guide bars 11 and lit-arc arranged between the adjacent pulleys, the bar 11 being between pulleys S and 9, and the bar 12 between pulleys 9 and it), and each bar is parallel with the adiacent surfaces of the pulleys, and half way between the said surfaces. Each bar is pivoted at each end to the upper end of a link 13, and the lower end of each link is pivoted to a bracket 14 on the fame. A carriage 15 in the form.

of a block is sl'idable on each bar, each block having an opening for receiving the bar, and the block. are connected by means of a telescoping member consisting of an inner section ltS and an outer section 17. The section 16 is polygomil in cross section, as is also the bore of section 17, to prevent angula r movement of the sections with respect to each other. Each section 16 and 17 is connected at its outer end to the adjacent block by means of spaced lugs 18 on the block, between which the end of the section is received. and to which it is pivotally connected. lVhen the blocks move longitudinally of the guide bars they must move toward and from. each other on account; of the inclined :nrangcment of the guide bars, and the connection 16, 17 and 18 permits this movement. The lugs 18 are so arranged that; the member 1 t3--17 is parallel with the end members of the frame, and at right angles to the shafts. Each block is provided with a pair of spaced depending bearing arms 19, and a stub shaft 20 is journaled in the lower ends of each pair of arms.

A, wheel is secured to each stub shaft, and each wheel consists of two similar frustoconical portions 21 and 22 arranged with their large ends or bases together. The wheels Ql-22 are of such diameter that each wheel will contact with the surfaces of the two adjacent pulleys, and since the distance between such surfaces is the same throughout the length of the pulleys the wheels will always contact with both pulleys.

A pair of spaced standards 23 is secured to the end member of the frame adjacent to cross bar 3, and each standard has a bearing 30 at its upper end, and a shaft 9t is journaled in the bearings of the standards. The shaft is provided at its outer end with a crank arm 95 and at its inner end with oppositely extending radial arms 26 and 27. A link 98 connects the guide bar 11. to arm 96, and a similar link 2!) connects bar 11 to arm 27. lVhcn the shaft Q-t is oscillated in its bearings the guide bars '11. and 12 are swung longitiulinally on the links 13 and in opposite directions. \Vhen the bars are moved h'mgitmlinally it will be obvious that they will also be moved vertically, and the wheel 91-92 of either bar may be thus moved toward or from the adjacent pulley. When the wheels 9l22 are moved longitudinally of the guide bars they are constrained to travel at the same speed by the cally relative to each other, as well as toward and from each other.

The shaft is the driving shaft and may be connected to the source of power in any suitable manner, for instance, by means of a belt engaging the pulley 31 on the said shaft Each of the pulleys 8, 9 and 10 is provided with an annular flange 32 at its small end to form a stop for limiting the movement of wheels 2l-22.

The pulley '9 is preferably slidable on the shaft 5 and may be constrained to rotate therewith in any suitable manner. A hub 38 extends longitudinally from the large end of the pulley and is provided with an annular groove for engagement by any suitable means to move the pulley. The pulley is moved either on the shaft, or with the shaft, to insure a close it between wheels 2122 and the pulleys 8, 9 and 10. The shafts i and 6 may be connected to clifferent machines or to the same machine.

The pulleys 8 and 10 may be operated by sl aft 5 atdifferent speeds by separating the blocks 15, so that they may move independently of each other.

The particular shape of the connecting wheels provides an engaging surface for each cone at each side of the wheel. That is, there is an engaging surface on the connecting wheel parallel with the adjacent cone. This arrangement permits the desired connection and movement to be obtained without slipping, and without any great amount of friction.

I claim:

1. A device of the character specified, comprising a frame, three parallel shafts journaled on the frame in spaced relation, a cone pulley on each shaft, the pulleys on the lateral shafts being arranged in the same manner and in the opposite manner to the pulley of the central shaft, a guide bar between each pair of adjacent pulleys, each bar being at equal distances from the adjacent surfaces of the pulleys and parallel therewith, a link pivoted at one end to each end of each bar and at the other end to the frame, a carriage slidable on each bar, a wheel journaled on each carriage and engaging the adjacent pair of pulleys, each wheel comprising two similar frusto-conical portions having their large ends ton k \J gether, means for constraining the carriages to move together on the guide bars, said means comprising inner and outer telescoping members, each member being hinged at its outer end to the adjacent carriage, and means for simultaneously swinging the guide bars in opposite directions, said means comprising standards at one end of the frame, a shaft journaled in the standards and having oppositely extending radial arms, a link connecting each arm to a guide bar, said shaft having a crank arm at its outer end.

2. A device of the character specified, comprising a frame, three parallel shafts journaled on the frame in spaced relation,

. cone pulley on each shaft, the pulleys on the lateral shafts being arranged in the same manner and in the opposite manner to the pulley of the central shaft, a guide bar between each pair of adjacent pulleys, each bar being at equal distances from the adjacent surfaces of the pulleys and parallel therewith, a link pivoted at one end to each end of each bar and at the other end to the frame, a carriage slidable on each bar, a wheel journaled on each carriage and engaging the adjacent pair of pulleys, each wheel comprising two similar frust-o-conical portions having their large ends together, means for constraining the carriages to move together on the guide bars, and means for simultaneously swinging the guide bars in opposite directions, said means compris ing standards at one end of the frame, a shaft journaled in the standards and having oppositely extending radial arms, a link connecting each arm to a guide bar, said shaft having a crank arm at its outer end.

3. A device of the character specified, comprising a frame, three parallel shafts journaled on the frame in spaced relation, a cone pulley on each shaft, the pulleys on the lateral shafts being arranged in the same manner and in the opposite manner to the pulley of the central shaft, a guide bar between each pair of adjacent pulleys, each bar being at equal distances from the adjacent surfaces of the pulleys and parallel therewith, a link pivoted at one end to each end of each bar and at the other end to the frame, a carriage slidable on each bar, a wheel journaled on each carriage and engaging the adjacent pair of pulleys, each wheel comprising two similar frusto-conical portions having their large ends together, means for constraining the carriages to move together on the guide bars, and means for simultaneously swinging the guide bars in opposite directions, the central pulley being mounted for movement longitudinally of the other pulleys.

l. A device of the character specified, comprising a frame, three parallel shafts j ournaled on the frame in spaced relation, a cone pulley on each shaft, the pulleys on the lateral shafts being arranged in the same manner and in the opposite manner to the pulley of the central shaft, a guide bar between each pair of adjacent pulleys, each bar being at equal distances from the adjacent surfaces of the pulleys and parallel therewith, a link pivoted at one end to each end of each bar and at the other end to the move together on the guide bars, and means frame, a carriage slidable on each bar, a for simultaneously swinging the guide bars Wheel jonrnaled on each carriage and enin opposite directions.

gaging the adjacent pair of pulleys, each CHARLES N. WI-IIPPLE. Wheel comprising two similar frusto-conical Witnesses:

portions having their large ends together, Hnnsonnn V. RIGGS,

means for constraining the carriages to VALLAOE N. SCALES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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