US2385676A

US2385676A - Sash opening and closing mechanism

Info

Publication number: US2385676A
Authority: US
Publication date: 1945-09-25
Anticipated expiration: 1962-09-25

Description

Sept. 25, 1945.

R T. AXE

SASH OPENING AND CLOSING MECHANSM -Fild June 30, 1943 ATTORNEYS Patented Sept. 25, 1945 y, 2,385,676 SASI OPENING AND CLOS-ING MECHANISM Roy TL Axe, Syracuse, N. Y., assignor` to The O. M.

Edwards Company, Inc.,

poration of New York Application June 30, 1943, s'erial'No 492,899V

3 claims. (ci. 26S-126) AThis invention 'relates to sash opening and closing or regulating mechanisms, such as the sash used in buses and other vehicles, which mechanism includes a lever arm, which is connected to one of the rails, as the top rail, of the sash at the median line of the sash, and means for actuating the lever including a rotatable element or Wheel connected to the lever by a connectingY rod, -so arranged that movement of the connecting rod during one half of a re'cipr'ocationv opens the sash and during the other half, closes the sash.

This invention has for its object an arrangement by which the lever arm maybe readily and accurately adjusted to vary the starting and stopping or reversing positions in accordance with the position ofthe sash, when closed and fully open.

It further has for its object whereby the point of connection between the lever and the sash moves in an arc close to the chord of the arc or a straight line, which is a vertical line, in case of the sash, which raises and lowers, passing through the center of the sash vertically.

Other objects appear throughout the'specification.

The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed. In'descrilbing this invention, reference is had to the accompanying drawing in which like characters designate corresponding parts in all the views.

Figure 1 is an elevation of this mechanism, the contiguous portion of the frame of the vehicle or bus being shown.

Figure 2 is a fragmentary elevation, partly in Section, looking to the left in Figure 1.

Figure 3 is a fragmentary plan view looking downwardly in Figure 1; i Figures 4 and 5 are detail views of one ofthe eccentrics for effecting the adjustment of the lever arm, which is connected to the sash, Figure 5 being on the line of 5 5, Figure 4.

This mechanism comprises, generally, a motion transmitting lever pivoted to suitable framing in the vehicle or bus, above or below,` or at one side or the other of the sash, dependent upon Whether the sash opens vertically or horizontally, the lever being connected to the sash, a rotatable element or wheel mounted on the sash framing, the Wheel having a crank pin, a connecting rod between the crank pin and the lever and connected to the lever at a` point eccentric to the pivotal axis of the lever, a suitable handle, as a crank, and reduction gearing between the handle and the crank wheel, the handle transmitting its motion through a slip clutch, so that when the sash reaches the limit of its movement in either direction, force continued to be applied to the Syracuse, N. Y., a corcrank handle causes the crank handle to slip or unclutch.

'Ihe mechanism further includes the adjustment features hereinafter specifically pointed out.

The mechanism here' shown is adapted for a sash which raises `and lowers vertically by a handle arranged above the top of the sash.

I designates the motion transmitting lever, this Ibeing pivoted at2 to the car :framing 3, the lever being connected at its lower end to the top rail 4 of the sash through a carriage, which has a limited movement lengthwise of the top rail during the movement ofthe lever, that is, during the movement of its lower end in an arc.

5 designates the rotatable motion transmitting part or wheel suitably mounted on a spindle or shaft 6 on the framing 3, it having a crank piny 1. 8 designates a connecting rod having a bearing at one end on the crank pin, and also a bearing at its other end on a pin 9 located on the lever I eccentric to the pivotal axis 2 of the'lever. The pivot 2, pin 9 andthe free end of the, lever are so relatively located that the lever is an angle lever having a long arm and a short arm, the short arm being pivoted at 2 at its end to the frame 3.

The wheel 5 is a gear and it is actuated from` a suitable handle through a reduction gearing.

I0 designates the handle, this being mounted ,on a spindle I I connected thereto through a slip clutch I2, the spindle being mounted in a suitable casing I3 xed to the frame and having a pinion I4 thereon meshing with an intermediate gear I5. A shaft I6 has alpinion I'I thereon which meshes with the gear 5. The gear I5 laps the gear 5. The casing having a projecting portion I8 presses against the side face of the gear wheel 5 opposite to that lapped 4by the gear I5 and acts as a brake to prevent movement of the sash under its own weight and momentum. The slip clutch I2 may be `of any suitable construction, and is here shown as including a head I9 keyed to the spindle or shaft II, an axially spring-pressed sleeve 2i) and clutch members, as balls 2| between the sleeve and the head, the lballs normally being seated in sockets 22 in the head I9. The force ofthe spring 23 on the sleeve is suiicient to hold the balls 2I clutched in the sockets 22 under normal operation, but should the operator continue to apply a turning force to the handle, when the sash has been returned to closed position, or has reached its fully open position, the balls will be cammed out of the sockets 22 and the handle I0 and its hub or sleeve 20 will rotate idly about the shaft II. In this sash regulating mechanism, this does not occur after the connecting rod 8 is once properly adjusted and also after the arm I is properly adjusted relatively to the carriage 31 to cause the 'sash to be in fully closed 'or in fully open and provided with ofthe free endfof the lever l.

, position, when the connecting rod is at one end Y The bearings between the opposite ends of connecting rod 8 and the crank pin 1 and pinKS' of the lever I are eccentric bca'ringlsand? adjds't able, one being adjustable to vary the lineal dimension of the connecting 'rod'jfad hence'the throw of the lever l, and the other being adjustable to Vary the starting position *ofV the free end kof the lever I to conform-t the fully'- closed' position of the sash, that is, vary the efEect-Vi-ve radial angleof the long arm of the lever. This a disk or iti-rig 24 dif eccentrically mountedk on the pin 1 o'rg arid) tti-ng yin a circl'alr' bea-ring hole 2'6- or' Z'F one end or" the" other of the connecting r'odj 8L vr'lfl'ie 'has suitahie hatches 2"@ er' 2c therein for eoaetihe a retainer er -deg 3c" or-el which is heid iii position bye suitable ineens este screw extehiihgf thrcug'h a sist-*t the deg'. obviousiy, the' connecting ich Amay he sdmsted a l'ir'i'e'al` direction to" vary the' throw ofthe' lever' F by adjusting' the eccentric 2aen'i the starting angine-r pesi'ti-eri' of theiever 'or th-ej ihitiai poste tien-er' the fewer ehd of thev lever t maybe) eidejusted'if necessary, hy turning the eccentric `ring 25'. rrewe'ver, these two` adjustments; which are initier sdilistmehts, may be omitted; because ih some iri'sftallatioristheyv are not reachable" vvithveheie, which cftentime's extends the fuif ieiigth" Q `The stud 55 is suitably mounted inthe carriage and has-a headV` o rndi'sk' d ovrlyng'tl'i frame' offthe carriage. The endA of the lever afn if extends etween this-disk Ml'and a nut` `4`I Vi'llfiread'- ingT ori-the stud.v

In the mechanism here illus't'rated f or raising andA lowering the sash-` of vehicles and buses' erribody thel handlefwheel and" redilct'ion gear-ing.be2 tween. the handlerandethe wheeland alsoI a cral the handle turnsralways in one mechanism, but

direction through repeated complete circles, and turning of the handle until the crank travels in asemi-circle will completely open the window sash end eeiitihced mvement in thesseme direction.

By the adjustments of the connecting rod 8 and the arm l, the connecting rod can be adfiistec' so that its bearings will come into posii Y tion to reverse when the sash is fully open and lO relatively tothe carriage lly closdQ-afdbyfthe adjustment of the arm I 31, the sash can be that it will be accurately when the connecting rod is adjusted in such position flfly closed Vcir' dijen in reversing positions.

d et the" fewer end' or thel Y jwayvfa lever havingan" elongated carriage-afl', one

' @Term is;

lso, in View of the arrangement of the arm l aridi tle carriage the rail of tl-iel sal-slyth: force arm is piilied't the sash at all" `l`o`s`e to t e frie'diarrlineE of the g the'f raising andloweringf, the dees riettifiter heeo'riie jammed, tee'etset of the ft' of the sash.

i I eseshepehirig" arid- 'resi-fig hretheisiii lever-pirotecst one' eri-ii eric hevihgitsj other @mijA heeteetethesesh the median iii-fe' f C011 with respect te thev directionof moves-ien ating means for the lever includingv a'wh'e 4h iiigjs veat-ehh' piiji, connecting hier between the crank pi eric the reifer' eridecrihettec to the rever' et e point eeee'ntrie te the pivetsi or the lever,y hiee'hs for t'iirhih: the wheer about arid meeii's for varyingv the eheetivest'er'tihg i of the lever arm relatively to the" radial angle sash, the' sash having c slide therein; aha' seid meets including rheeh'inisii for attaching" 'the shde tcth'e' ehd of said eitpcih'ts iii clistere-ht recarsi eagles for sei-d with respect te the' pivctai exis or the lever. i 2. fn 'l'S'lIg-Iili's'ni, leveren/eten at che* efid aha having its thefiehd connected to thesash at the median line tleef with respect te the directif-ih er rhvefeht, actu-Y afifg f` Y lffl"k ilg- Wlel' ing a crank pin, a 'e'ctig r'd' b'etwfe `tl pf li a-lld' voifil'd. EO the leve-fet e 'pihjt eeeeh rie tothe pittei lever; iiie'ans fortffig the' wheel ericht 'its and means for varying the eiective starting' fldiallagl' v'fflfi lv arm 'relatively {ffii/'ITISv sash, the sash having a slidethereihan-d; slidI means includingmechanism for attaching.'k the' slide to the end of;4 saidarm at points in diferent radial Qangl'es of said arm vwith` respect to the ivotal axis of thelever indiierent radial angles of said armsaidpoints being. arangedin a series in aline Yextending'. the general' direction of thefline of travel of the sash. Y

' Ih asash opening and closingmechanismf the combinatiowith agsash rail formedl with* a enci movable in the way, the leverbing 'pivoted to the carriage at apoint intermediate the ends thereof, -a rotatable motion transmitting riart having a kcrank 3in,fa connectingA rodhaving abearing atrone end'onV the cranlr'n'in and` at its' othenend on the lever eccentric to the pivotaf :thisthereof,` and? means foi adinstingt'he angle gf` Athe ievei ieietiieiif te the :taeter edriiiee'tidri betWeIrT/aldi'fhig; n f

esisf' the g