US982399A - Shifting-mechanism. - Google Patents

Description

Patented Jan. 24, 1911.

l A. H.v VIK. -SHIFTING MEOHANISM. 'i APPLIUATION FILED 110V. 30, 1909.

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.ANDREW H. VIK, 0F POULSBO, WASHINGTON, ASSIGNOR OF ONE-HALF TO RASMUS H. VIK, 0F POULSBO, WASHINGTON.

SHIFTING MECHANISM.

Specification of Letters Patent.

Patented Jan. 24, 1911.

Application filed November 30, 1909. Serial No. 530,659.

To all whom it may con-cera:

Be it known that I, ANDREW I-l. Vin, a subject of the King ot' Norway, and a resident of the town oit Ioulsbo, in the county of Kitsap and State of lVashington, have invented certain new and useful Improvements in Shifting Mechanism, ot' which the following is a specification.

The primary aim ot' the present invention is the provision ot' improved shitting means for adjusting variable speed mechanisms.

The invention embraces certain novel -teatures in the construction and arrangement. of parts as hereinafter set forth and defined in the appended claims.

lVth reference to the accompanying drawing wherein like reference numerals designate corresponding parts throughout: F igure 1 is a side elevation of a pulling and hauling' mechanism with my invention applied thereto. Iiig. 2 is a fragmentary section on line 2 2 of Fig. 1, and Fig. 3 is a section on line 3 3 of Fig. 1.

lVith reference to the drawing numeral 1 designates a drum rotatably mounted in a suitable frame 2 in connection with a drive gear wheel 10 and a drive pinion l1, and 4 indicates a longitudinally adjustable shait rotatably supported in said frame and having a driving wheel 4:0 and a driving pinion L11 secured thereto for engagement with gears 11 and 10 respectively as may be desired to operate the drum at relatively high or low speed.

For the purpose of effecting adjustment of shaft 4l- I provide a rack and pinion device comprising a rack 5, secured to a sleeve 50 loose on the said shaft and provided with a collar 50 engaged in a thrust bearing on frame 2, and a pinion C secured to a rod G0 rotatably mounted in suitable hangers GO ot' a head 70 which is secured to shaft l1. In the arrangement shown7 head 70 has extension in the form of a sweep 7, and rod G0 is likewise extended and provided at the outer end with a hand wheel G1 and a ratchet wheel (32, the latter of which is normally engaged by a relatively iixed pawl G3 mounted on the sweep.

In the position of the parts as shown pinion l11 is meshing with wheel 10 for elieeting, by rotation of shaft 4, a relatively low speed motion of the drum. If desired to increase the speed of the drum, pawl 63 is disengaged i from its ratchet to release rod G0 for rotation with pinion 6. Shaft Il will then be free to slide longitudinally and come by gravity to a lowered position wherein gear wheel 4.0 meshes with pinion 11. Adjust.- ment of shaft et in a reverse direction to that just described is eli'ected by rotating pinion (i, through the medium 0i hand wheel G1 in the proper direction to canse it to ride npwardly on rack 5, as will be obvious.

In connection with drum 1 I have shown a back stop mechanism comprising a ratchet wheel 19., secured to the drum, and a relatively fixed pawl 13 which is connected by means of a shifter 82, with a slip collar 8 mounted on sleeve 50 and having spaced apart extensions S which slidably embrace rack 5. Shifter 82 comprises a stem 83 slidably mounted on frame 2, and arms 84 and S5 secured to said stem and engagedrespectively with collar 8 and the stem of pawl 13 whereby upward movement of the collar elevates the shifter to move p'awl 13 to a releasing position with respect to its ratchet. Such movement of the collar is conveniently eil'ected through the medium of a rope 80 secured thereto and leading over an elevated guide S1 on head 70 and thence to the outer end of sweep 7.

lVith the parts adjusted as in the drawing, the operation is as follows: A pulling and hauling cable is secured to drum 1 and power applied to the sweep to rotate shaft 4l: and thereby drive the drum through the medium oi the gears fl-l and 10 to eil'eet the desired pulling operation, as for example, to extract a stump. If desired to then move or haul the stump, pawl 63 is disengaged from its ratchet to release pinion 6 for lowering movement of shaft 4 to bring wheel 40 into mesh with pinion 1l for operation of the drum at relatively high speed.

When desired to effect a subsequent pulling operation, hand wheel (31 is rotated to canse pinion G to ride upwardly on rack 5 and thereby elevate shaft 4t a suitable degree to carry wheel l10 just clear of pinion 11. Collar 8 is then drawn upwardly by pulling on rope 80 to operate shifter S2 to disengage pawl 13 from its ratchet and thereby release the druln ior run out of the cable. Hand wheel G1 is then further rotated to bring pinion 41 into mesh with wheel 10 and the pulling operation proceeded with as before.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States of America, is:

l. A shifting mechanism comprising an element, means supporting said element for rotation and for adjustment longitudinally of its axis, and a device for effecting longitudinal adjustment of said element comprising a pinion supported thereby to be carried with it during its rotary movement and longitudinal adjustment, and a rack supported on a relatively fixed part.

2. A shifting mechanism comprising a rotatable element, means supporting said element for rotation and for longitudinal adj justment, a sweep connected to said element for rotating the same, and a device comprising companion rack and pinion members for effecting longitudinal adjustment of said element and being rotatable therewith, one of said members being movable longitudinally with said element and the other being supported on a relatively fixed partagainst thrust of its companion member.

3. A shifting mechanism comprising a rotatable element, means supporting said element for rotation and for longitudinal adjustment, a sweep connected to said element for rotating the same, means for adjusting said element longitudinally, said last means being rotatable with said element and comprising a pinion carried by said element and a rack supported on said first means and meshing with said pinion, and outwardly for rotating the same, means for adjusting said element longitudinally, said last means being rotatable with said element and comprising a pinion carried by said element and a companion rack supported on said first means, a rod fixed to said pinion and journaled on said sweep, means engaged with the outer end of said rod for rotating the same, and means for holding said rod against rotation.

5. In apparatus of the character described, a drum, means supporting said drum for rotation, a shaft supported for rotation and for lengthwise adjustment, a driving connection between said shaft and drum comprising gears of relatively large and small diameter arranged for adjustment by sliding movement of said shaft to effect the operation of said drum at varying speeds, and means for shifting said shaft, said last means being rotatable with said shaft and comprising a rack and pinion device.

Signed at Seattle, Vashington this 19th day of November 1909.

ANDREV H. VIK.

YVitnesses HEROHMER JOHNSTON, ARLrrA ADAMS.

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