US1380874A

US1380874A - Gear-shifting device

Info

Publication number: US1380874A
Application number: US386665A
Authority: US
Inventors: Valent Johan
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-06-05
Filing date: 1920-06-05
Publication date: 1921-06-07
Anticipated expiration: 1938-06-07

Description

1-. VALENT, v

GEAR SHIFIING DEVlCE.

APPUCATION FILED JUNE 5, I920.

1,380,874. Patented June 7,1921.

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GEAR SHIFTING DEVIQE. APPLICATION FILED JUNE 5, 1920.

1,380,874.? v MM June 7,1921

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GEAR SHIFTING DEVICE.

APPLICATION FILED JUNE 5. 1920 Patented June 7 1921;;

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87 j f v r /a/ W ATTORNEY UNETED stares GEAB-SHIFTING- DEVICE.

Application filed June 5,1320. Serial No. 386,665.

To aZZ w from it may concern.

Be it known that l, JOHAN ViiLEN'r, a citizen of Czechoslovakia, residing 'at lVest Hoboken, county of Hudson, and State of Yew Jersey, have invented-certain new and useful improvements .in. Gear- Shifting Devices, of which the following is a specification. I

The present invention relates to improvements in gear shifting devices and it is the principal object of the invention to provide a device for shifting the gears operating a belt pulley shaft for changing the direction of rotation and for allowing the pulley to run idle if desired.

A further object of the invention resides in the arrangement of the gears within a casing adapted to be partly filled with a lubricating agent so that all parts are constantly kept well lubricated.

Other objects of the invention will become apparent as the description proceeds and will be more fully set forth in the appended claims.

In the accompanying drawings- Figure 1 is a side view of heimproved gear shifter after removal of the end plates of the gear casing.

Fig. 2'is a sectional view thereof, this sect-ion being taken along line 2-2 of Fig. 1.

Fig. 3 is a sectional view taken along line of Fig. 1.

Fig. 4 isa sectional view, the section being; taken along line 4 4 of Fig. 2.

Fig. 5 is a section-through the pulley: and

its shaft, the section being ta en along line Y 5 '5 of Fig. 1, and

Fig. 6 is an end view of the pulley seen from the left of Fig. 5, with thehousing partly broken away.

In the drawings, the gear casing is designated at 10, and 1s provided at its upper part witha hanger 11 by means of which the gear shifter may be suspended from a ceiling or a beam.

In the side walls 12 and 13 of thecasing 10 a tubular shaft 14' is iournaled in which a longitudinally sliding shalt 14 is located. Both shafts 14 and 14 extend to the out-' side of the casing and the tubular shaft 14' carries, at one of its ends the pulley 15 loosely mounted upon said shaft with its bushing 16. To the opposite end of the shaft 14 a link 17 is pivotally secured with one of its ends as at 18, while the opposite end of said link'is pivotally secured as at rarest orriacs.

JOHAN VALENT, IVEST HOB OKE N, NEW JERSEY.

' Specification of Letters Patent; Patefited June-"Y, 1921 19 to a hand lever 20. The upper end of this lever is pivotally secured asat 21 between the prongs of the forked end of a brace bar 22 secured to the outer wall of'the casing,

10 as at 23. p

W ithin the casing the shaft 14' carries a gear wheel 24 secured to said shaft by means of a bushing 25. Below the shaft 14 a frame 26 is secured to the outer wall of the casing on which a plate '27 slides having a central zigzag-shaped slot 28. To the outer edge of this plate 27 in approximately its center, link 29 is pivotallysecured with one end, while the other end of" this link is pivotally securedto the lever 20 intermediate its ends as at 30.

In the slot 28 of the plate 27 a' pin'81 of a link 32 travels, which is rotatably. secured intermediate'its ends in a bracket '33 fastened to the side wall of the casing 10. At this point the side wallha's a slot 34 through which the arm 35 of the link is extended. 7

The free end'of this arm 35 is pivotally secured as'at 36 to a bracket 37 fastened to the side of a T-plate 38' secured with its lower part to a rock shaft 89. The upper 'ends of the T-bar of the plate'38 are connected by means of springs 40 and 41 respectively to screws 42 and 43 within housings 44 and 45 at the end walls of the cas- 7 ing 10. V

Stub shafts 46 and 47 rest with their ends in plate 38 and the ends of these shafts carry nuts 48 and 49. The opposite'ends of the shafts are supported in an-elongated "plate 50 through which they are passed and secured by means of nuts 51 and 52 ontheir outer ends.

Gears 53 and 54-are secured on the stub shafts 46 and 47, and one-of these gears is always in mesh with the gear 24 on shaft 14. It will be clear that the operation of the handle 20 by the intermediary of the

links

32 and 35 will work the plate 38and the stub shaft and gears therein to alternately engage the gear 24.

As shown in Figs. 5 and 6, the pulley 15 is provided with an inner chamber. 55 in WVlllCll a split r1ng 56 is arranged between 'the'ends of which a lever 57 is provided having a finger 5-8 adapted to engage a depression 59 of the shaft 14. This position is shown in Fig. 5.

It will be clear that upon the shifting of shaft 14 by the operation of lever 20 and no i link 17 the finger 58 will glide upward along the inclined face of the depression 59 and the ring 56 will be expanded to engage frictionallythe inner Wall of the chamber 55 of pulley 15. The finger 58 will then by nieans of asleeve 59 secured to the outer end of the tubular shaft 14; carrying the El-l couple the pulley with shaft I l on which the gear 2 f revolves.

The device operates as follows- Upon theoperation of the driving shaft 60, the inner end of which is Within the rckshaft39 and which carries a gear 61 secured to the shaft 60 by its bushing 62, the ea crwiu be rotated which isin nesh With both gears 54: and which also will be rotated.

Assurnr-zd now that the pin 31 is in neutral or central position in slot 28, neither of said Wheels 53 and 54: will be in engagement with Wheel 24 on shaft let, the

' pulley l however will at" this time be in .handlever, a two-armed lever pivotally supported in its center, a pm 1n one of Stud aarnis engaging the slot in send plate, a T- driving shaft connected with said rock shaft,

neutral position as shown in Fig. 5, and will run idle. If new the lever 20 is op,- erated to bring the pin 31 into engagement with the outer end ofthe slot 28, by the operation of theT-plate 38, the Wheel 24 will be engaged by Wheel 53 and the pulley 15 will be coupled to the tubular shaft of Wheel 24 in the aforedescribed manner, and run in one direction. t If the lever 20 is operated to shift the pin ill to the opposite and inner end of the .slot 28, the Wheel 54: will be brought into engagement with the Wheel 24: and the pillfley will be'shifted to runiin the opposite direction. a u

Havmg thus descr bed my invention What ,I claim as new and desire to secure by LettersPatent of the United States is as follows 1, A,, gear rshifting device of the character described comprising a train of gears,

ahandlever, and means for operating said gears to rotate the pulley, to run in one or the other direction, said means comprising a sliding plate having a central zig-zag slot, a linkpivotally connecting said plate to said plate p-ivotally connectedto the a other of said arms, a train of gears adapted to be operated by said hand lever and T-plate for rotating the pulley to run in one or the other "direction upon the operation of said lever,

and means for mov ng and gears in and out of their neutral pos1t1on.

,12jln a gear shifting device of the character described, a casing, a rock shaft, a

a gear on saidrock shaft, a T-plate on said rock shaft to rock therewith, a hand operated lever, anelongated plate, a pair of stub shafts supported in said T-plate and said elongated plate, a pair of gears on said stub shaft in mesh, with the gear on said rock shaft, a shaft in said casing above said T- plate, a gear on said last named shaft adapted'to be engaged by one or the other of said gears on said stub shafts upon the rocking of said T-plate upon the operation of said hand lever, to rotate the pulley to run in one and the other direction, and means for inoving'the gears in and out of their neutral position.

3. In a gear shifting device of thecharacter described, a hand lever, a casing, a tubular shaft revolving in said casing, a gear Wheel having a bushing secured to said shaft, a sliding shaft displaceable Within said tubular shaft, said sliding shaft having 5 a depression near its outer end, a chambered pulley having a bushing revolving in said tubular shaft, a split ring Within thechamber of said pulley, a lever engaging said ring between the split parts thereof, a finger on said lever adapted to engage the depression of said shaft Whensaid pulley is in neutral position and to slide out ofv said depression'to operate said-lever to clamp said ring against the inner Wall ofthechaniber of saidpulley for coupling said pulley to said tubularshaft to run in one .or the other direction upon the operation gear by said hand lever. 4-. In a gear shifting device of the charof said acter described, a rock shaft, a gear on said rock shaft, a T-plate on said ,rock shaft adapted to rock upon the same, means for rocking said T-plate, an elongated plate, a pair of stub shaft-s supported in said T- plate and said elongated plate and adapted to rock therewith, springs secured to the ends of the T-bar of said T-plate, incased screws to vvhichthe free ends of said springs are fastened, a gear on each of said, stub shafts adapted to be engaged by said first namedgea r, a tubular shaft, a sliding shaft said pulley to run in one or the other direcl outer edge of said plate, a hand lever to Which the other end of said link is pivotally connected, a pinsliding in said slot, adapted to be displaced by said hand leverto take uptwo operating and a neutral position, a rock shaft, a T-plate secured to said rock ing, a link pivotally connected to the central v shaft a bracket secured to said T-plate a two-armed lever, one arm of said lever pivoted to said bracket, a central pivot for said lever, the other arm of said lever carrying said pin, a driving shaft, a gear on said driving shaft, an elongated plate, stub shafts supported in said T-plate and said elongated plate, a gear upon eachof said stub shafts in mesh with said first named gear, said T-plate adapted to be rocked in one or the other direction upon the operation of said hand lever, to rock said stub shaft gears, a tubular shaft in said casing, a. gear on said tubular shaft adapted to be engaged by one or the other of said stub shaft gears upon the rocking of said T-plate, a pulley on an extension of said tubular shaft adapted to rotate in one or the other direction according to the engagement of the gear on its shaft with one or the other of said stub shaft gears, a split ring Within a chamber of said pulley, a shiftable shaft within said tubular shaft having a depression, a lever for operating said split ring to engage the.

Walls of the pulley chamber, afinger on said lever engaging the depression of said sliding shaft in the neutral position of said pulley,

adapted to couple said pulley and said tubular shaft upon the operation of said sliding shaft to bring said finger out of engagement with the depression of said last named shaft, and a link pivotally connected to the end of said sliding shaft and said hand lever V JOHAN VALENT.