US554813A - James b - Google Patents

Description

J'.B.'CLYNB. BELT SHIFTER (No Model.)

No. 554,813. Patented Feb. 18, 1896.

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JAMES B. CLYNE, OF CLEVELAND, OHIO, ASSIGNOR TO THE CLEVELAND MACHINE SCREV COMPANY, OF SAME PLACE.

BELT-SHIFTER.

SPECIFICATION forming part of Letters Patent No. 554,813, dated February 18, 1896.

Application filed August 1895. Serial No. 559,319. (No model.)

To @ZZ whom, t may concern:

Be it known that I, JAMES B. CLYNE, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Belt-Shifters; and I do hereby declare the following to be a full, clear, and eXact description of the invention such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in automatically-operated belt-Shifters; and it consists in certain features of construction and combinations of parts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure lis a front side elevation of a belt-shifter embodying my invention, and Fig 2 is a righthand side elevation in vertical section on line 2 2, Eig. l. Portions are broken away in the drawings to reduce their size and to more clearly show the construction. The drawings also show the reversible shaft or spindle,

the pulley'- bearing shaft provided with a fixed pulley and two loose pulleys arranged at the opposite sides, respectively, of the fixed pulley, and the belt operatively engaged by the belt-shifter and adapted to be shifted from the one loose pulley over the fixed pulley to the other loose pulley, or vice versa, and the drawings also show the intergearing between the loose pulleys and reversible shaft or spindle, whereby the latter is rotated in the one direction or the other, according as the belt operatively engages the one or the other loose pulley. Eig. 3 is a side elevation of the outer or pinbearing end of either one of the arms of the lower end of the belt-shifting lever.

Referring to the drawings, A designates the suitably-supported reversible shaft or spindle, and B the pulley-bearing shaft that is arranged parallel with and a suitable distance at one side of the reversible shaft or spindle.

B and B2 represent two loose pulleys supported from shaft B a sufficient distance apart to accommodate the location between them of another pulley B2, that is fixed upon the pulley-bearing shaft. A driving-belt C,

driven from a counter-shaft overhead, (not shown,) engages the one or the other of the loose pulleys and at a suitable distance above the pulleys is operatively engaged by the fork CZ of the upright oscillating shiftinglever D of the belt-shifter, which lever, at or near its lower end, is fulcrumed to any suitable support-such, for instance, as a horizontally-arranged pinE, that is arranged at right angles to and a suitable distance below the aforesaid shafts.

A spur-gearb' is operatively connected with pulley B and meshes with a spur-gear A operatively mounted upon the reversible shaft or spindle. A spur-gear b2 is operatively conrnected. with pulley B2 and meshes with an intermediate gear b, that is also in mesh with a spur-gear A2, operatively mounted upon the reversible shaft or spindle. It will, therefore, be observed that the reversible shaft or spindle is rotated in the one direction or the other, according as operative engagement is established between the driving-belt and the one or the other of pulleys B B2.

For automatically oscillating or shifting lever D, so as to shift the belt from pulley B to pulley B2, or vice versa, I provide as follows: Said lever at its lower end, preferably somewhat below the axis of the lever, is provided with two arms D and D2, that are arranged at right angles, or approximately at right angles, to the upright arm of the lever and project laterally of the levers axis in opposite directions, respectively. The outer end of each arm D D2 is provided with an upright hole D3 therethrough, and within said hole D3 is located a pin G, that extends through the hole and at its upper end terminates in a head G', that protrudes a suitable distance at the upper end of the engaginghole and is preferably rounded on top. A spiral spring II is confined upon each pin G between the head of the pin and a shoulder D4, formed upon the surrounding wall of the respective hole D3 a suitable distance from the lower end of the hole, and said spring acts to retain the pin in its elevated or normal position. Each pin G extends a suitable .distance below the supporting lever-arm, and has its lower end screw-threaded externally IOO and a nut g mounted upon said threaded end, which nut is adapted to engage the under side of the piirsupportin g arm, and therefore constitutes a stop to limit the upward movement of the pin. Each lever-arm D D?, upon the inner side of the outer end of the arm, is provided with an inwardlyp1ojectng lug D, to which a vertically-tilting latch I is pivoted at 1, the upper end of which latch projects a suitable distance above the respective leverarm, and the lower end of which latch, in the normal and locking position of the latter, is adapted to engage an inclined or beveled surface J', formed upon the head of an upright pin or lug J, that is rigidly secured to any stationary object-such, for instance, as the sup porting-frame of the machine.

A suitably-supported shaft K is provided between lever D and the pulleybearin g shaft, which shaft is shown arranged horizontally and parallel with said pul1eybearing shaft. Shaft K is provided with two arms K and K2, that are located above the outer ends of the different arms D' and D2 of the lever, respectively.

The arrangement of parts is such that arms K K2 shall, during their revolution, engage and depress the pins G of arms D and D2, arm K being adapted, during its revolution, to engage and depress the pin of arm D againstthe action of the spring mounted upon said pin and engage and render inoperative the tilting latch adjacent to said arm D', and arm Y2 is adapted, during its revolution, to engage and depress the pin of arm D2 against the action of the spring mounted upon said pin and engage and render inoperative the tilting latch adjacent to said arm D2, and the arrangement of parts is, furthermore, such that each of the arms K K2 shall be adapted to hold the respective pin depressed until the respective tilting latch has been rendered inoperative, and thereby exert a pressure down wardly upon the respective pin-bearing arm, which pressure effects the oscillation of the belt-shiftin g lever into its other extreme position, as required to shift the belt from the one loose pulley to the other loose pulley, and arms K' K2 are located such a distance apart circumferentially of their supporti11g-shaft that the belt-shifter shall be operated at the intervals of time required.

The downward movement of each arm D D2 is limited by any suitable stop provided for the purpose, which stop consists preferably of a stationarylug L, that is located adjacent to the outer end of the respective arm and is adapted to be engaged by the lower ex tremity of the tilting latch borne by said arm when the latch has been rendered inoperative and thelarm tilted downwardly, as hereinbefore indicated. Hence when the belt-shif ting lever lis in either one of its extreme positions one of the tilting latches l engages the respective incline J and the .other latch engages the respective stop L, as shown in Fig. l.

Shaft K is shown provided with a drivingpulley 7u, (see Fig. 1,) to which power is ap plied in any approved manner. The arrow in Fig. 2 indicates the direction in which said shaft is rotated, and in said figure it will be observed that arm K2 has just eifected the depression of the pin borne by arm D2 and has just come into engagement with but not yet actuated the adjacent latch l, which when rendered inoperative permits said arm l)- to be depressed by the pressure exerted thereon by shaft-arm K2, and the resulting depression of said lever-arm D'2 will actuate the belt-shift ing lever and cause the latter to shift thebelt from the loose pulley engaged by the belt into operative engagement with the other loose pulley.

lVhatl claim isl. In a beltshifter, the combination with an upright beltshifting lever provided, at its lower end, with two arms proj eeting laterally of the lever-axis in opposite directions, respectively, of a yielding member suitably supported from each of said arms, said yielding member, in its normal position, projectin g a suitable distance above the respective arm, means for locking each lever-arm in its elevated position, and means for limiting the depression of each lever-arm, two suitably-actuated revolving members arranged a suitable distance apart circumferentially of their axes and adapted to engage and depress the diiferent aforesaid yielding members, respectively, and the respective lever-arm, and render inoperative the means employed to lock the respective levenarm in its elevated position, and the arrangement of parts being such that the pressure exerted by either one of the revolving members upon the respective leverarm shall, as soon as the arm-lookin g means is rendered inoperative, result in the oscillation of the belt-shifting lever from the one to the other of its extreme positions, substantially as set forth.

2. In a belt-shifter, the colnbination with an upright belt-shiftin g lever D fulcrnmed at or near its lower end, and provided at said end with two arms projectii'ig laterally of the lever-axis in opposite directions, respectively; of a yielding member supported from each of said arms, said yielding member, in its normal position, projecting above the respective arm a suitable distance; a tilt-ing latch suitably supported from each of said lever-arms adjacent to the aforesaid yielding member of the respective arm, said latch, in the elevated position of the supportinglever-arm, locking said arm in said position; a stop for each lever-arm for limiting the downward movement of said arm; a suitably-actuated revolving member operating adjacent to each of the aforesaid yielding members and adjacent latch, said arm being adapted to depress said yielding member and render the arm-locking latch inoperative and exert a pressure downwardly upon the respective lever-arm, all ar- TOO IIO

ranged substantially as shown, for the purpose specified.

3. In a belt-shifter, the combination with the upright belt-shifting lever fulcrumed at or 4near its lower end, and provided at said end with two arms D and D2 projecting laterally of the lever-axis in opposite directions, respectively, each of said arms being provided with an upright hole D3 therethrough, of the pins G, springs H, tilting latches I, stationary inclines or beveled surfaces J', and stops L,

suitably-actuated shaft K and its arms K', K2, all arranged and operating substantially as shown, for the purpose specied.

In testimony whereof I sign this specica- I5 tion, in the presence of two witnesses, this 31st day of July, 1895.

JAMES B. CLYNE. lVitnesses:

JOHN P. BROPHY, C. H. DORER.

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