US2432799A - Window operator - Google Patents

Description

Dec. 16, 1947. A. RAPPL WINDOW OPERATOR Filed Aug. 15, 1942 4 Sheets-Shet 1 m, 0 n V0 mp F m V. mwmm ATTORNEYS WINDOW OPERATOR Filed Aug. 13, 1942 4 Sheets-Sheet 2 rfloa fi g pl,

. ATTORNEYS Dec. 16, 1947. A, RAPPL 2,432,799

WINDOW OPERATOR Filed Aug. 13, 1942 4 Sheets-Sheet 3 IQNVENTOR pkon RappL @MMMCBM.

ATTORNEYS Dec. 16, 1947. A. RAPPL 2,432,799

WINDOW OPERATQR Filed Aug. 15, 1942 4 Sheets-Sheet '4 Fig.9.

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J 84,85 V1, 90 17 92 3%; z, H 1 5 105 5;; $06 X i INVENTOR Amen RappL QWMMQM ATTORNEYS Patented Dec. 16, 1947 UNITED .STATES PATENT OFFICE WINDOW OPERATOR Anton Rappl, Buffalo, N. Y., assignor to Trico Products Corporation, Buil'alo, N. Y.

Application August 13, 1942, Serial No. 454,634

24 Claims. 1

This invention relates to a window operating mechanism and primarily to a mechanism 'for the operation of the vertically slidable windows of motor vehicles wherein the window is mounted in vertical guideways for opening and closing movement into and out of a well provided to receive it in the vehicle door or body.

' It has heretofore been proposed to manipulate the vertically slidable window through suitable linkage with or without the aid of suitable counterbalance means and because of the fact that the window panel is frequently of odd shape, such as with the top beveled which shortens one vertical edge relative to the other, extreme care must be given to avoid the canting of the panel and causing an objectionable binding of the same in its guides.

The object of the present invention is to provide a practical and simple support for the window panel which will be eflicient in operation whil effectively holding the panel against binding in its guideway but rather provide for a smooth and even movement during window adjustment.

The invention further aims to provide a power operated window regulator which is compact in design for facilitating its installation in the confined space available in the modern motor vehicle.

In the drawing Fig. 1 is a diagrammatic view depicting the present invention in one embodiment associated with the window of a motor vehicle;

Figs. 2 and 3 are detailed views showing the manner of connecting the window panel to its adjustable support and operating mechanism;

Fig. 4 is an enlarged longitudinal sectional view through the power unit of the mechanism, parts being broken away;

Fig. 5 is an end elevation of the motor;

Fig. 6 is a modified showing of the present invention;

Fig. 7 is an elevation, partly in section, of a modified motor construction;

Fig. 8 is an exploded perspective of the piston rod connecting means;

Fig. 9 is a diagrammatic view, similar to Fig. l, depicting a further embodiment;

Figs. 10 and 11 are detailed views of the selfadjusting connector between the window and the active portion of the flexible operator shown in of endless flexible members or hands 9 and 9' engages. The connecting lug 6 is fixed on its flexible member and may be in the form of a headed screw In, having its shank ll formed with a chordal slot l2 to receive the flexible member, and a nut l3 which is threaded on the shank ii to clamp upon the head. The head of the screw and the nut preferably have supporting engagement with th wall parts of the bearing 5 in a manner to permit the connecting lug riding therein in accommodation of difierences which may occur between the movements of the flexible member and the window. By means of the clamp nut I3 the lug is adjustably secured in a fixed position on its flexible member which latter is preferably in the form of a thin flat tape or ribbon of steel or other suitable material. The flexible members are supported on guide pulleys l4, l5, l6 and I! to provide the active flights or portions i8 and IS on which the connecting lugs 6 are fixed. The shorter member 9' is supported solely by the pulleys I5 and I! while the longer member 9, after taking about pulleys I 4 and It may also pass about the pulleys l5 and I! on top of the shorter member for movement in unison therewith.

Between the lower pulleys l5 and I1 is arranged the drive for moving the flexible support for the window, the drive herein depicted being of the power type and comprising a fluid motor having a cylindrical or tubular casing 20 with a chamber in which operates a piston 2|. The opposite ends of the casing chamber ar connected by conduits 22 and 23 to a fluid pressure supply'line 24 which in turn is connected to a source of power, such as the intake manifold of the motor vehicle in-,

ternal combustion engine. While superatmospheric pressure may be used, suction is preferred, and in the illustrated embodiment the source of suction is in constant communication with the chamber 20 at both sides of the piston 2| to thereby balance the pressure on opposite sides thereof. When it is desired to operate the motor either valve 25 or valve 26 will be operated to interrupt the suction communication and vent the respective side of the chamber to the atmosphere, thereby creating an unbalanced condition and providing a pressure differential for moving the piston toward the low pressure side. For example, if valve 25 is actuated to open the left hand end of chamber 20, as viewed in Fig. 1, to the atmosphere the relatively higher pressure of the outside atmosnhere will enter the chamber and act upon the piston 2| to move it to the right. This causes the flexibl portions or fl ghts l8 and ill to move the connecting lugs downwardly and lower the window. Actuation of the valve 26 will cause an upward movement of the window to a closed position. In the illustrated embodiment the longer flexible member incorporates the piston structure as a part thereof to make an endless f rm by being connected d rectly to the opposite sides thereof and is joined to the shorter flexible member 9', as by means of a fastener 21. for movement in unison therewith. Consequently the driving force of the motor as im arted to the longer flexible member by the piston 2! will impart like moveme t to the shorter endless member and the two act ve portions l8 and 19 will have like movement for actuating the window in a well-balanced manner.

To revent the window from being o ened from the outside the piston is of a se f-lock ng cons ruction such as is s own in Fig, 4 wherein is ill rated a sect on 28 firmly anc ored to the flex ble m mbe 9 and a. floa i section 29 which is movable relative to the anchored or fixed section. the relative y movable section having a central sleeve 30 slidab y sup orting the same on a link rod 3| in a substantially flu d tight manner. In the illustrated embodiment, this rod serves as a connecting link for the opposite ends of the lower flexible member and is ri idly attached to the piston section 28 by a clamp nut 32. The connec or 3| may compr se separable parts threadedly connected as at 33 for ease of assembly, and while the connector passes continuously through the piston it serves to connect the flexibie member to the opposite sides of the piston.

Interposed between the piston sections is an expansible c utch or lock comprising one or more shoes 34 supported on resilient toggle-like arms 35 and embraced by encircling resil ent rings 36 which not only serve to contract the shoes and hold them in position on the toggle arms but also may actually constitute the active face for the window locking shoes. The spring arms 35 may constitute radial extensions of a spring plate 3'! rig dly connected to the piston rod 3| and suitably backed by a body plate 38, these two plates beng conveniently clamped in position by the separable parts of the piston rod insert. The outer ends of the toggle arms are engaged in pock-' ets 39 formed in the back or inner side of the brake shoe means along with a coupling plate 40 which latter is rigidly connected to the floating piston section by spacers 4|. By reason of this construction fluid pressure actuation of the floating section will move the lock shoes relative to and toward the fixed piston section, thereby deflecting the toggle arms to permit the lock shoes contracting from effective engagement with the chamber wall under the influence of the spring retaining rings 36. However, any attempt to lower the window from the outside will be frustrated by imparting an inward movement of the rod 3i relative to the floating section 30 (movement to the right in Fig. 4) which will cause the body plate 38 to press on the toggle arms and 75 4 thereby expand the shoes into firm locking contact with the chamber wall.

The pulleys l6 and I1 may be journaled in brackets 42 which are in turn mounted upon the end walls 43 of the motor chamber 20, and the strip-like flexible piston rod 9 is passed through openings 44 in such end walls, each opening being suitably packed by a gasket 45 held in position by a plate 46. By having the flexible members of ribbon-like form the fluid tight sealing of each end of the motor chamber is facilitated by reason of the fact that the ribbon design actually presents two flat surfaces joined by the narrow edges. Consequently, the gasket has a slit therein, the opposing sides of the slit wiping in sealing contact the flat surfaces of the flexible band. The narrow edges are effectively sealed by the sides of the slits hugging the same Where they join each other. 7

The arrangement of the pulleys l6 and I"! on the opposite ends of the motor provides a compact unit which facilitates the mounting and installation of the motor in confined quarters, such as obtain in the window well of a vehicle door, and for such purpose a pair of brackets M are provided, one at each end of the motor. The mounting is rendered adjustable at each end whereby any slack in the flexible support may be taken up, such adjustment being herein provided by a screw 48 passing through a. slot 49 in each bracket. By adjusting either or both brackets the endless flexible members may be maintained taut. The piston attached ends of the flexible piston rod are reinforced by clips 50 and engaged in slots 51 in the outer ends of the separable parts of the connector 3|, being suitably anchored in place as by the rivets 52.

The twov active portions l8 and i9 impart an evenly guided movement to the window panel so as to move the same up and down in a smooth and well-regulated manner while the connecting lugs 6 play in and out of the bearing 5 to accommodate any irregularity of movement between the window and the flexible window support.

In lieu of two actuating bands 2. single one may be utilized as illustrated in the modification shown in Fig. 6, wherein the flexible member 53 has an active flight or portion 54 to which the window bracket 55 is connected by a play connection 56, similar in construction with that illustrated in Figs. 2 and 3. The bracket 55 is preferably arranged beneath the center of gravity of the window for a simple balanced construction to which the horizontal disposition of the fluid motor is well adapted. However, it is obvious that manual or other types of power drives may be utilized to regulate the flexible support for the window, which latter term is used herein to include doors and similar closures.

In Figs. 7 and 8 a difierent form of connection between the flexible member and the piston is illustrated. The opposite ends of the ribbon-like piston rod 9 are joined by a connector rod or link 51, being secured in slots in the ends thereof by rivets 58. The link 51 in this view is in the form of a cylindrical plug having a reduced end portion 59 to provide a shoulder 60, and this plug is detachably fitted within a sleeve 6| fixed to the piston section 62. The sleeve has a flat formation 63 received by a like shaped opening in the piston section 62 to hold the latter against rotative movement thereon, and the piston section is secured in position on the sleeve by two embracing clamp nuts 64 and 65, the latter nut having a flange 66 overhanging the rim 61 of the plug 51 to cooperate with the internal shoulder 88, on which the plug shoulder 60 seats, in locking the plug in place.

The floating piston section 69 has limited sliding movement on the cylindrical end portion iii of the sleeve. the packing member II serving to seal this sliding ,fit. fluid driven movement of the section on the end portion during which motion the locking shoes at the outer ends of the toggle arms 13 are released in a manner similar to that in the embodiment of Fig. 4. The rigid toggle arms have pivotal bearing against the back of shoulders I2, being held thereagainst by a light coiled spring I0 which also places the shoes under a light pressure sufilcient to support them ready for immediate response to window imparted movement. The reduced end portion 59 of the link plug has a fiat tongue engaging in a slot I6 in the end of the sleeve to resist relative tumlng of the parts. I

In this embodiment the shoe space between the piston sections is provided restricted communication with the opposite ends of the motor chamber H, as by means of a small bleed port I8, Fig. '7,

.or by a larger port 19, adapted to be closed by a check valve 80. This check valve is in the form of a ring plate freely movable on a spacing washer M as limited by the retaining ring 82, the retaining ring and spacing washer being conveniently held in place along with the piston section 62 by the clamp nuts 64 and 65. The function of either or both of these restricted communications is to normally maintain a pressure equalization on opposite sides of each piston section to frustrate any attempt to manipulate the window to an open position and, further. to provide ready fluid responsive operation of the window.

Referring to the embodiment of Figs. 9 through 13. a single flexible member 8;! is utilized to provide the two active portions or flights 84 and 85 supported by upper pulleys 86 and lower pulleys 81, the latter being carried by and at the opposite ends of the fluid motor 88. The flexible member is fastened at one end to one side of the piston 80, similar to that shown in Figs. 4 and '7, and after taking upwardly over the adjacent pair of upper and lower pulleys is extended across to the companion upper pulley and thence down to the underlying pulley 81. This forms an idle portion 90. The member is then passed about the lower pulley, and back up to the immediately overlying pulley, taking about the latter in superposed relation to the portion already thereon by passing beneath the same. This produces the active flight portion 85, and thereafter the flexible member is interrupted by a crossover coupling 9| to dispose the continuation of the flexible member upon the outside of that portion first passed about the lower pu1ley,. in which relation the continuation takes about such lower pulley and into the motor chamber where it is fastened to the other side of the piston. The coupling BI with the adjacent member portions provides, in efiect, a second idle flight portion.

As illustrated in Figs. 12'and 13, the coupling 9I comprises separable parts, one part 92 having side cars 93 with registering seats 94 while the.

A shoulder 12 limits the.

oi! a screw 88. The screws 98 may be rendered accessible through the interior finishing of the vehicle sothat adjustment may be made from time to time to take up any slack in flexible window support. Because of this arrangement the motor may be permanently mounted on the vehicle body structure by the brackets 99.

Depending from the window frame I 00 is a pair of brackets IOI supporting a transverse bar I02 which has band straddling arms I03 at each end formed with horizontal bearings I04 similar to those in Figs. 2 and 3. Oppositely extending lugs I05 are carried by the flexible band and engage in the bearings I04, the lugsbeing fixed by a pin I06 to a cleat In! on the flexible member. As the window is operated, the lugs will be free to ride in and out in accommodation to any diilerence between the guided movement of the window and that of the active portion. A set screw I00 engaged in a slot I09 of each bracket IOI permits the transverse bar I 02 to be adjusted for properly disposing the bearings I04.

The flexible support provides a positive and well guided window movement; The flexible member is disposed axially of the piston so that the latter pushes and pulls on the flexible band in the direction of piston travel and within the plane of the piston path. The positive support provided by the flexible member is due primarily to the fact that the latter is of fixed lineal extent throughout and since it is mounted in tension on fixed points of support, each flight or portion between any two adjacent points of support will likewise be of fixed lineal extent. The fixed points of support, as provided by the pulleys or wheels, afford a roller bearing mount for the firm though flexible window support. is held to a straight course and against canting to a binding tilt in its guideways. The window is given, in effect. a rigid support which rides over and about its four points of su port with a minimum of friction and without substantial uncontrolled play or looseness. The two points of attachment. with the window are related to bodily support the window properly positioned. The window cannot be tilted counter-clockwise, as viewed in Fig. 1, into binding engagement with its guiding channels 2 because of the redetermined lineal dimension of the control part of the flexible member which extends over the upper pulleys I4 and I5 and one lower pulley I I in passing between the two points of window attachment. Likewise. the window cannot be tilted clockwise because of the invariable length of the power part of the flexible member which extends beneath the lower pulleys I6 and I1 and over upper pulley I5 in passing from one point of attachment to the other. The up er part transmits the refluired portion of the force applied to one side of the window as may be necessarv to move the other side in an even and well guided manner. Inv other words it transmits equalized parallel movements to all parts of the window. The window adjusting or moving force is ap lied to the power or lower part of the flexible member whichls also acting'in tension. The power part is, in eflect, divided by the piston into fore and aft sections, the aft section being the oneto which the pull is applied while the ore secti n is the one which pays out through the front end of the motor cham r. and these two sections are normally acting in tension. Ho ever, since the fore section is likewise supported in a taut state, it will cooperatively assist the control part in maintaining the window in proper position. The pull on Therefore, the window the art section will act through the tensioned control part and in cooperation with the fore section, the endless member moving on its roller support as a rigid non-extensible body having a predetermined lineal dimension which maintains the window poised for an even and smooth motion of translation. Upon reversal of the motor the fore section becomes the aft section, and vice versa. In this connection it will be observed that the two sections of the power art enter and emerge from the motor chamber to substantially the same extent in order to preserve this solid or firm mounting for the window, and that each section, while being a single ply. nevertheless serves to move plural active portions which are herein arranged to the same side of their respective supporting wheels. The arrangements illustrated produce, in effect, two endless members, a shorter one including the active portion I9 (85) and a larger one including the active portion l8 (M). The cross-over coupling 9| ties the two endless members together with the shorter one located in the larger, while the coupling 21 ties the individual endless members in the same relation, the two 1ndividual endless members in this instance constituting the flexible band member. In both constructions the points of attachment will be held in a predetermined relationshi for holding the window properly poised on the active portions.

Furthermore, since the flexible member, which comprises the dual active portions of Figs. 1 and 9, is acting in tension, it will be apparent that any window imparted movement will be transmitted by the flexible member to the window lock for immediately setting the latter. Therefore, the weight of the window normally will set the lock sufliciently to support the window elevated when the motor becomes inoperative.

While the foregoing description has been given in detail it is not the intention thereby to preclude the use of the inventive principles involved in other physical embodiments or to restrict their scope beyond the definition of the appended claims.

What is claimed is:

1. In a motor vehicle having a slidable closure adapted to be moved into and out of a well provided in the body wall of a motor vehicle, a flexible member arranged within the well and having an active vertical portion therein, means connecting the closure to the active portion, a fluid motor comprising a chamber and a piston, the opposite ends of the flexible member being connected to the opposite sides of the piston. bracket extensions carried beyond the oppos te end walls of the chamber, a pulley journaled on each bracket extension, the flexible member taking over the pulleys and passing through openings in the end walls, means connecting the flexible member to opposite sides of the piston, and other bracket means supporting the chamber and its carried pulleys as a unit for selectively adiusting either pulley to take up slack in the flexible member.

2. Closure regulating means comprising an endless member with supporting means therefor to provide an active portion, a second endless member fastened to the flrst endless member at a point spaced from such active portion for movement in unison therewith, means spaced from the first supporting means and supporting both endless members adjacent their point of securement and providing an active portion of the second endless member in substantial parallel relation to the first active portion, means directly engaged with the first endless member for reciprocating 8 the active portions, and means on the active portions for supporting a closure thereon.

3. Closure regulating means comprising an endless member with supporting means therefor to provide an active portion, a second endless member, means spaced from the first supporting means for supporting an active portion of the second member in substantial parallel but spaced relation to the first active portion, a part of said second supporting means also supporting the first endless member in superimposed relation thereto, means operable for reciprocating the active portions, means on the active portions for connecting the latter to a closure for adjusting the same, said connecting means embodying spaced bracket parts each depending from the lower edge of the window and straddling one of the active portions, and means fixed to each active portion and interengaging with the straddling bracket part for establishing the connection.

4. Closure regulating means comprising a flexible support mounted to provide spaced active flexible portions substantially in parallel relation, means for reciprocating the active portions, and means for connecting the active portions to a closure for adjusting the same, said connecting means embodying spaced bracket parts one for each portion and each part provided with spaced bearing portions extending transversely of and straddling the adjacent active portion, and a member carried by each active portion and having bearing portions at the opposite sides thereof engaging with the spaced bearing portions of the respective bracket part for limited riding movement therein to accommodate relative lateral movement between a connected closure and the active portions.

5. Closure regulating means comprising an endless band with supporting means therefor to provide an active portion, a second hand fastened to the endless band for simultaneous movement therewith, means spaced from the first supporting means and supporting an active portion of the second band substantially in parallel relation to the first active portion, means operable for reciprocating the active portions, and means on the active portions for connecting the latter to a closure for adjusting the same, said reciprocating means comprising a motor having a chamber and a reciprocable part therein to which the ends of the second band are connected, the two supporting means each including a wheel carried by the motor, both active portions extending substantially at a normal to the path of reciprocation for the motor part, the second band taking over one wheel alone and over the other wheel jointly with the endless band.

6. A closure regulator comprising a flexible member, pairs of upper and lower pulleys, the flexible member passing from the lower pulley of one pair to its associated upper pulley to provide one active portion and thence over to and about the pulleys of the adjacent pair to provide another active portion and a, third portion, a, crossover coupling member on the third portion, the flexible member having oppositely extending terminals at the opposite sides of the third portion connected by the coupling member for movement as a unit, means on the active portion for operatively connecting the same to a window, and an actuator to which the flexible member is connected.

7. A closure regulator comprising a flexible member, a pair of pulleys over which the member passes to provide an active portion and a parallel portion, the latter overlying a terminal portion of the member, a second pair of pulleys, the member extending from one end of said parallel portion over to and about the second pair of pulleys to provide a second active portion and then from the latter back to the first pair of pulleys there terminating in superposed relation to the other end of said parallel portion whereby-the two terminal portions lie upon opposite sides of said parallel portion, means on the activeportions for connecting the latter to a closure; and means detachably coupling the terminal portions together.-

8. In a motor vehicle, a slidable window adapt ed to be lowered within a'well provided in the body of a motor vehicle, a flexible member arranged within the well and having an active portion supported therein between a pulley fixed in the well adjacent its top and spaced pulleys adjustably arranged beneath the fixed pulley, means connecting the window to the active portion, and a fluid motor comprising a chamber and a piston, the opposite ends of the flexible member being connected to and extending from the opposite sides of the piston, said adjustable pulleys being carried on the opposite ends of the chamber for adjustment therewith as a unit toward and from the fixed pulley to render the flexible member operative. I l

9. A vertically slidable window of a motor vehicle, guide means for the window, fixed upper pulley means, a fluid motor unit beneath the pulley means and including a chamber and a piston in the chamber with a pulley journale'd on each end of the chamber, a flexible transmission member of fixed length supported in tension by the pulley means and said pulleys to provide spaced 'vertical active portions, the ends of the flexible member being joined to the opposite sides of the piston, spaced attachment means on the window positioning the latter on the active portions for translatory motion when such activ portions elevate and lower the window, and means adiustably mounting the fluid motor imit to take up slack throughout the length of the flexible member to thereby tension the latter for preserving such translatory motion.

10. A window, guide means slidably supporting the window, a flexible power transmission comprising a plurality of wheels journaled to provide four fixed points of support and an endless flexible member having a fixed lineal dimension and mounted in tension on the wheels to provide an endless power transmitting member adapted to move about the fixed points of support as a rigid body, such fixed points of support defining a pair of substantially parallel active portions and a pair of intertying cross portions, each of the four portions having a fixed lineal extent between its two fixed points of support, means bodily supporting the window at spaced points on the two active portions whereby to divide the endless member into opposing control parts of predetermined length acting in tension to transmit a translatory motion to the window, and a fluid motor having a piston interposed in one cross portion to apply the operating fluid pressure impulses thereto in an axial direction.

11. A window, guide means slidably support- 7 ing the same, a regulator comprising flexible means supported in tension to provide a pair of active portions, actuating means for the portions, said active portions being in the form of flat bands supported by like wheels, a pair of arms carried by the window and providing lateral guideways extending in planes paralleling the flat faces of the bands, means carried by each active portion movably engaging a respective one of the guideways for supporting the window for bodily movement, said guideway engaging means projecting normally to the planes of the flat faces and adapted to ride in the guideways to accommodate any unparallel relation between the fixed guide means and the active portions, the bands being supported in tension by the wheels against flexing in the direction of extent of the 'guideways, and means adjustably mounting the arms for positioning the window with respect to its guide means.

'12. A vertically slldable window, guide means slidably supporting the same, pulley means fixedly mounted adjacent the path of the window, a fluid motor unit including a chamber, a piston in the chamber, a pulley journaled on each end of the chamber, and a flexible member of predetermined length connected to the opposite sides of the piston and serving as the piston rod for the motor, said flexible member taking over said pulleys and removably passing about the pulley means for mounting and demounting with the motor as a unit with respect thereto, means adjustably mounting the motor with respect to the pulley means for tensioning the flexible memher, and means detachably and operatively con necting the window to the flexible member.

13. A motor vehicle having a window panel slidable in guideways from across a window opening into a well in the side wall structure of the vehicle body, bearings arranged in the well to provide four relatively fixed points of support, flexible window supporting means having a flexible member portion supported by two adjacent bearings to provide in effect a short endless memher with an active part and a second part, said window supporting means also having a flexible member portion supported by all four bearings to provide in efiect a'relatively longer endless member with an active part and a second part, means bodily supporting the window panel positioned on the two active parts against binding in the guideways, and means operable to reciprocate the window supporting means, the two flexible member portions being interconnected for movement of the two active parts in unison whereby to impart a motion of translation to the window against binding throughout its movement.

14. A window, guide means slidably supporting the same, wheels arranged to provide four relatively fixed points of support, a ribbon-like band having a section extending about the four points of support in succession and back again about the third point beneath the band portion thereon, said band having another section taking over the fourth point on top of the band portion thereon, cross-over means interlocking together the ends of the two sections at opposite sides of the band part between the third and fourth points, means coupling the opposite ends of the two sections to form in effect an endless power transmitting member having compan on active portions supported by the first two and the last two points of support respectively, means positioning the window on the two active portions for a motion of translation on the guide means, and means operable to reciprocate the band to so move the window.

15. A window, guide means slidably supporting the same, wheels arranged to provide four relatively fixed points of support, a ribbon-like band having a section extending about the four points of support in succession and back again about 11 the third point beneath the band portion thereon, said band having another section taking over the fourth point on top of the band portion thereon. cross-over means interlocking together the ends of the two sections at opposite sides of the bandpart between the third and fourth points, means coupling the opposite ends of the two sections to form in effect an endless power transmitting member having companion active portions supported by the first two and the last two points of support respectively, means positioning the window on the two active portions for a motion of translation on the guide means, means adjustably mounting one wheel for tensioning the endless power transmitting member about all of the wheels, said cross-over means permitting relative movement of said band part to effect such tensioning adjustment, and means operable to reciprocate the band to so move the window.

16. A window, guide means slidably supporting the same, two pairs of upper and lower wheels arranged to provide four relatively fixed points of support, flexible transmission means extending about the four points of support in succession and retaking about the third and fourth points to define substantially parallel active parts at the corresponding sides of said pairs for movement in unison, means supporting the window on said active parts for translatory movement on the guide means, and means operable to recip rocate the endless means.

17. A vertically slidable window, guide means slidably supporting the same, a regulator for the window in the form of a flexible flat band supported in tension at four relatively fixed points of support to provide a pair of substantially vertical active portions with opposed inner faces, window carried bracket arm parts straddling and extending across the opposite fiat faces of each active band portion, lug means projecting from the opposite faces of each active band portion, said lug means engaging the bracket arm parts at the opposite sides of each active band portion for providing equalized support for the window against the flexing of the band portion, and means for imparting back and forth movement to the active band portions.

18. A vertically slidable window, guide means slidably supporting the same, a regulator for the window in the form of a flexible flat band supported in tension at four relatively fixed points of support to provide a pair of substantially vertical active portions with opposed inner faces, a connector lug fixed to and extending substantially normal from a flat face of each active band portion, a bracket arm part fixedly carried by the window and extending across the lug carrying face, said arm part movably engaging its lug at upper and lower points of contact within the width of the band whereby the load of the window will be transmitted to the band lengthwise thereof, means operatively holding the fixed bracket arm part against riding off the lug incidental to the flexing of the band, and means for moving the band back and forth.

19. A motor vehicle having a closure. 2. flexible member having an active portion supported between spaced pulley means, means connecting the closure to the active portion for being opened and closed thereby, a fluid motor comprising a chamber and a piston, the piston having two relatively movable sections, the flexible member being connected to and extending in opposite directions from one of the piston sections whereby upon movement of the closure in either direction said one piston section will be pulled in a corresponding direction by the flexible member according to the direction of closure movement, and locking means carried by the other of said piston sections and connected to be operated by and upon a closure imparted pull of the flexible member in one direction to lock the piston against movement in the chamber, an opposite pull on the flexible member serving to pull said one piston section to hold the locking means inoperative for closure imparted movement of the flexible member and said one piston section as a unit.

20. A window system comprising a window, a fluid motor for operating the same having a chamber and a piston therein, a transmission operatively connecting the piston to the window for back and forth movement as a unit and including a power transmitting member slidable through the piston for limited relative movement, and a lock carried by the piston and operable by a window imparted movement of the power transmitting member relative to the piston for locking the latter against movement, said piston being fluid responsive and slidable on the power transmitting member initially to render the lock inoperative and thereafter to move the power transmitting member for adjusting the window.

21. A window system comprising a window, a fluid motor for operating the same having a chamber and a piston therein, a transmission operatively connecting the piston to the window for back and forth movement as a unit and in-- cluding a flexible power transmitting member slidable through the piston and supported in tension by a pair of wheels at the opposite ends of the chamber, means limiting the relative movement between the piston and the flexible power transmitting member, and a lock operable by a window imparted movement of the power transmitting member relative to the piston for locking the latter against movement, said piston being fluid responsive and slidable along the flexible power transmitting member to initially render the lock inoperative and thereafter to move the flexible power transmitting member for adjusting the window.

22. A window system comprising a window, a fluid motor for operating the same having a chamber and a piston therein, an endless power transmitting member operatively connecting the piston to the window for back and forth movement as a unit and slidably extending through the piston for limited play movement with respect thereto, and a lock carried by th piston and operable by a window imparted movement of the endless power transmitting member relative to the piston for locking the latter against movement, said piston being fluid responsive and slidable upon the endless power transmitting member initially to render the lock inoperative and thereafter to move the endless power transmitting member for actuating the window.

23. A motor vehicle having a vertically slidable window adapted to be lowered within a well provided in the body wall of the motor vehicle, an endless flexible member arranged within th well and having a control part and a power part, each part being of a predetermined length and having its opposite ends attached to the window at spaced points, spaced supporting means for the flexible member supporting both parts in tension. said parts bodily supporting the window operatively connected to the power part for pull- 5 ing the flexible member in one direction to lower the window and in the opposite direction to raise the window, and a lock operatively connected to the flexible member by a play connection for locking the piston arrested by a window imparted downward pull on the flexible member and for releasing the piston upon a reverse pull.

24. A motor vehicle having a vertically slidahie window adapted to be lowered within a well provided in the body wall of said motor vehicle, an endless flexible member arranged within the well and having multiple points of attachment to the window spaced relativelyto each other, said points of attachment eflecting the bodily support of the window to cause the weight of the latter normally to exert a downward pull on the flexible member at the spaced points of attachment, a fluid motor chamber, a piston operating in the chamber and operatively connected to the flexible member for pulling it in one direction to raise the window, and a lock operatively connected to the flexible member by a play conmention for locking the piston arrested by a window imparted downward pull on the flexible member and for releasing the piston upon a reverse puli,

' r ANTON RAPPL;

REFERENCES CITED The following references are of record in the flle of this patent:

UNITED STATES PATENTS Number Name Date 1,500,765 Norwood July 8, 1924 2,323,731 'Shetzline July 6, 1943 10 1,963,790 Jepsen June 19, 1934 1,198,138 Lovell Sept. 12, 1916 1,622,886 Siller .1. Mar. 29, 1927 2,338,069 Horton Dec. 28, 1943 1,573,541 Demand Feb. 16, 1926 15 Re. 15,331 Demand Apr. 11, 1922 1,834,701 Gustafson Dec. 1, 1931 2,094,124 Huffman Sept. 28, 1937 2,103,252 Gartin Dec. 28, 1937 948,603 Altrichter Feb. 8, 1910 20 1,834,235 Birrell Dec. 1, 1931 1,627,697 Fredericks May 10, '1027 1,612,232 Strandt Dec. 28, 1926 1,328,584 Noonan Jan. 20, 1920 1,919,671 Shetzline July 25, 1933 FOREIGN PATENTS Number Country Date 581,285 Germany July 25, 1933 415,562 France July 16, 1910 so 328,796 England May 8, 1930 780,276 France Jan. 29, 1935

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