US1774888A - Device for converting alpha reciprocating or oscillating motion into alpha rotary motion - Google Patents

Description

P. A. s. lvERsEN V 1,774,838 DEVICE FOR CONVERTING A RECIPROGATING OR l OSCILLATING MOTION INTO A ROTARY MOTION Filed April 5, 1929 2 Sheets-Sheet l Sept. 2, 1930.

Foul Arm; SCO'H' "lvavsen :N v E NTO Fa;

"elif: Aherney.

Sept. 2, 1930.

2 Sheelts-Sheet 2 POLA Arme 55014: |ver5en I VENTOR E) @mW/L Jul/s Att-orne) K Patented Sept. 2, 1930 reni-(Anim `se'orliT`-l IVEBSN, or?.COPENHAGENQDENMARK, AssIGNoB To A'Xnnimx ALEXIS 'von' KAUFEN;A151,'on'ooPermanenti.mrunix/LARI:v ,f l

DEVICE ron-.CONVERTINGA REGIPRQCATING on oseLLArmeil/IOTION INT0-:A

ROTARY MOTION Appiicatidnled April 5'1e29,'.seria1 'no. 352,707, anafin eer/mamk neember v22, izisgf A,

It is known to be `old rto convert 1a recipro-` catingor; oscillating motion into a .rotarybymeansifof ratchet pawls. Such panfls pivotally 4 attached to vthe reciprocatiingmember are usually pressed against the VWheel gravity 'ork spring..faction.'y

In vmany 'cases,lho\vever it isv impossible-to Y v.secure proper Workingopthemovable pawls, Y especially When the `'members ,concerned haveV 'to "Workfat places Where th'eyll are exposed to oonsiderable squirting with Water' "andfdirt,

for 1instance in jvconnection with l carriage brakes an'd Where; consequently there is' great danger oif'thelpawls becoming iiXed, by rusti'ngyin a position in which they cannotany longer reach the iteethofthe pa'yvl Wheel,` or

f lof the pa'wls becoming caught by dried dirt, SO vthat`the"intfe'ndedv aotion is y'not realized.

` l`4Thisl'drawback' is removed bythef'present invention in' that the rotary motiony is eiiected by means of progecting lugsv or teeth iixed on the reciprocating 'or oscillating member, theYV said teeth engaging corresponding projecting lugs or teeth'on the rotary member, and? the tiXed teeth beingfspaced so far ,from one another in the direction of the motion that they only in case of sufficiently large motion come into `engageinent with the frotating` teeth.

rEhenovel device based'upon this principal idea is illustrated onthediaiving showing Vby Way ot example two different constructions. Both constructionsrelate to devices Jfor automatic adjustmen-tof Carriage brakes,

Ycheek ybrake but the invention -alsobe applied-to many other purposes, or mayeasily bev used for such purposes intsiinilar mannerorfivhenslightly modified. Y;

l lshows a tions, thev lever .headeonstitu-ting the .novel device. Y Y@ f f* Fig. 12 shows an insidevievv of an internal Withfthe brake drum removed,

and"

Y n y lever'accordingtotheinvention; built into the brake'r'ods, inside ele-,- 'va-tion, in the 'positionfotrepose I fFig.V 2 the lever, partly in sectionyfin the braking position, and y A Fig. 3 ShOWsthe lever 1n 'liront elevation:` Figs. l to 11 show, in eight different posi.-

dure re'peatsitself."^`` 'l te@ 'Figiv the adjusting"device'jforming inA Cordingoto theinvention.

thisembodiment the novel arrangement VOn `an7oscillatory shaft `,Operate.d

Through this yhole one of the brake rodslj` isl passing,l and the .redis secured against with# drawal from the bore VZlby 'means of a 'nut A6.

The braking device, is:,tightenedk by rotationk of the nut 6. l All these details correspond 'to Vthe usual larrangementr, and do r'not constitute 1 the objectv of the present invention.y vThe novel feature, von the other hand, isthe device'V 'servingeto adjust the'nut 6;, automatically.

The free end voit thev lever v2 is formed asY a head consistiinggfl o'two y.side plates 7 ysupport# ingheachon the inside a Vlug or "tooth SandI r9. On the' 7 l'VVhen' the .bralefis correctly adjusted ftheV lever2willon`ly 'perform relatively Ismall" angular motions during lthe br'akingo-pera-A. tion,1 so that the tooth 9,;111 thepositron'of y. repose" illustrated ini-Figge, cannot come esoy n nut 6 corresponding teethorprojecy Vntions are-provided ony Which the teeth .and 9 v,can 'engage a v'further"d're'seriloed into enga'geir'ientYwith they teethA 10." when owing to fthe vfearof thebrake lining jV in the course Vof .time `the y angular motion kof 'the {lever 2 becomesy novv` further rotatedtooth Y10 (Figi/) Aand y' into engagement with one of theteeth 10,' and y will thereforerotaterthe'nut 6 corresponding- Y "ly. I Duringithe vs'u'bseoluent return motion fof y l 'thewl'everl2`into tliefp'o'sitio'n oi" rep'sethe tooth r8 .'vv'i'll' 'come'into engagementgwithf a A l Willfturnlthis tooth 'urtherorn` until finally the position shown in Figfl is vOnCe-more reachedj the nut' however being novv turnedl one tooth 10 forved- BY] this@ dilistment the"l angular motions of the ,lever 2 'will again Y'notYT vIt appears, from this manner of operation that the nut 6v must be litt-ed with an uneven number olf teeth. n Y Y c f Butthe adjusting rotation of thenut 6 will not in allcasesbe veffectedv so easily as described above, for it may happen, as shown in Fig. 8, thata tooth 10y placesvitself with its point directly opposite the Vfront edge of the i `tooth 8, whereby any forward motion rof the tooth 8 becomes impossible, unless the parts Sand 6 be movable relatively to one anbther, i. e. transversely relatively to the direction of motionof the fixed teeth. In the present construction `this Objectis attained by the bolt 3 being laterally movable in the head 7, so'tha't the-forward motion of the tooth 8, as it apmeans, in securingthe'automatic readjustment even during difficult conditions.

They details underlying the invention appear from the illustrations according to Figs. 4 to 11,`but still another embodiment will be further described. n f

.Figs 12 and 13 show a brake consisting of twobrake cheeks 11 and 12. d The cheeks are pivoted in known manner about fixed pins 13 j and k14, and are operatedin known manner by atoggle member'16 disposed in known manner between bearingsurfaces 15 at the free l ends of the brake cheeks. The toggle member 16 is here dis dosed on a rectan ular shaft 1.7 l fl and supports beyond-the free ends of the brake cheeks 11 4and 12 twoV discs 18 acting here asa ratchethead. The bearing surfaces '15 on the front sidesof tlie'brale Vcheeks 11 and 12 are `further formed as adjusting screws 1 `19 and 2 0 screwed intothe vends'of tliecheels.

not visible in Figl.

These screws areiprovided with heads 22 fiti l y'ted with teeth21. Theinner faces of the discs l18 arefitted :with teeth or pins 23 which vare In the same manner as for the previously described*construction,` as long asfthe brake vis in order, the vangular motion of' the toggle n member 16 cannot be suflicient for thenteeth 23 freu Lmi

to come into engagement with the teeth 21. But when wear takesplace then this angular motionwill become greater, and the teeth 23 (it may be mentioned for the sake of clearness ithat four such `teeth are provided in the present construction, viz. two on each disc 18) will rotate the screws 19 .and 20 in the same manner as described above', and will thereby cause the ,bearing'surfaces to be readjusted.

- Thenecessary lateral motion can here be at- 1 tained in simple manner, either by the toggle member 16 being adapted to slide together with the corresponding discs 18 on the shaft 17, or by the parts 16 and 18 being rigidly eonnected to the shaft 17 and preferably made in one with the latter, while the shaft 17 is free to slide in its bearings.

Vhat- I claim as new is:

1. Adjusting devicel comprising a rotary adjusting member fitted with teeth and a reciprocating member fitted with fixed projecting lugs adapted to engage the said teeth, the distance between the said lugs, measured in the direction of the motion, being so great that the lugs can only engage the teeth on the adjusting member when the motion exceeds a certain limit.

2. Adjusting device comprising a rotary adjusting member fitted with teeth, and a reciproca-ting` member fitted with fixed projecting' lugs adapted to engage the said teeth, the said adjusting member and lugs being relatively movable in lateral direction at right angles to the motion of the fixed lugs.

3. Adjusting device comprising a rotary adjusting member fitted with teeth, two parallel plates, a member reciprocating in the direction of the said plates, a plate on each side of the adjusting member, and a fixed projecting lug on each of the moving plates, the said lugs co-operating with the teeth on the adjusting member and said adjusting member and the fixed lugs being relatively movable in a direction perpendicular to the pla-tes.

In testimony whereof I affix my signature.

POUL ARNBSCOTT IVERSEN.

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