US2401673A - Window regulator with selfadjusting arm - Google Patents

Description

June 4, 1946. c. M. VERHAGEN WINDOW REGULATOR WITH SELF-ADJUSTING ARM Filed June 15, 1941 3 Sheets-Sheet 1 iNvE'NToR. cmszzm M Ver/myezz;

June 1946. c. M. VERHAGEN 2,401,673

WINDOW REGULATOR WITH SELF-ADJUSTING ARM Filed June 15, 1941' :s Sheets-Sheet 2 INVENTOR.

C/ZrwZZa/z M Var/zqgem BY MJZW/WW June 4, 1946. "c. M. VERHAGEN I 2,401,673

} WINDOW REGULATOR WITH SELF-ADJUSTINGARM Filed June 13, 1941 3 Sheets- Sheet s INVENTOR. C/ZrMQQ/ZM Ker/zayam,

Patented June 4,1946

WINDOW REGULATOR WITH SELE- ADJUSTING. ARM

Christian M. Verhagen, Elkhart, Ind'., assignorto The Adlake Company, Chicago; 111., a corporation of Illinois Application runsrs, 1941,.Serialno. 397,914.

This invention is concerned with window regulating mechanisms of the type commonly employed in streetcars, buses and other passenger vehicles for raisingand lowering vertically movable sash.

One of the principal objects of the invention is to provide an improved regulator which will lower a sash into its fullyclosed position, smoothly, and easily, without jamming, even though the position of the regulator with respect to the sash and sill be somewhat atvariance with the theoretically correct position due to error in construction or installation.

Another object is to provide a regulator of this character in which the hand crank used in operating the same can be turned in either direction, and in which such turning if continued in the same direction will move the sash first in one direction as far as it will go and then in the other direction, thus enabling the sash to be either closed or opened by turning the hand crank in but one direction.

Another object isto provide an improved regulator in which the torque arm connecting the hand crank with the track on the sash is of resiliently retractable construction, whereby to compensate for variation in the distance between the regulator and the sill.

Still another object is to provide an improved regulator in which the track carried by the sash is provided with an indexing recess for the reception of the traveler carried by the torque arm in the vertical position of the torque arm.

Still another object is to provide such a regulator which will exert spring pressure on the sash against the sill when the sash is in its fully lowered position.

While the foregoing statements are indicative in a general way of the nature of the invention, other more specific objects and advantages will be apparent to those skilled in the art upon a full understanding of the construction, arrangement and operation of the improved regulator.

One embodiment of the invention is presented herein by way of exemplification, but it will of course be appreciated that the invention is capable of being incorporated in other modified forms coming equally within the scope of the appended claims.

In the accompanying drawings:

Fig. 1 is a vertical section through a vehicle window, showing the same equipped with a regulator having the self-adjusting torque arm of the invention;

Fig. 2 is a fragmentary face view of the inside 5 Claims.- (Cl. 26812G)- 21 ofthe vehicle. directly above the window opening, showing the location of the regulator.

Fig. 3' is a fragmentary face view of the track mounted on the top rail of the sash;

Fig. 4 is a vertical transversesecti'on through the track, taken on the line 44 of'Fig. 3;

Fig. 5 is a rear view of the regulator;

Fig. 6 is a front view of the same; and

Fig. '7 is an edge View of thev same.

As will be observed in the drawings, the window H! to which the improved regulator is. applied includes a vertically movable sash H. A track l2 of channeled formation. is secured in a horizontal position to the. top rail l3 ofthe sash, in a position above the header 14 of the window. The track I 2 is engaged by an anti-friction roller [5. which is mounted on a tor ue arm l6 adjacent the outer end of the latter. The torque arm [6 is rotated about a center IT by a hand crank I8 through reduction gearing I9. As the hand crank 18 and reduction gearing l9 may be of con.- ventional construction the same will not be described in detail.

The torque arm i6 is characterized by an outer portion Hia which is shift'ably mounted on the inner portion lBb ofthe torque arm for movementtoward and away from the inner-portion in a direction lengthwise of the torque arm. The outer portion lea is arranged in lapped relation to the inner'portion I62) and is provided with side flanges 2B which slidingly embrace the-side edges of the inner portion. The outer portion is held against the inner portion by headed studs 21 on the inner portionwhich extend through elongated slots 22 in the outer portion. The inner portion is provided with laterally extending ears 23, and the outer portion is provided with similar longitudinally spaced cars 24. These ears are apertured for the reception of loosely fitting bolts 25, and coil springs 26 are positioned under compression about the bolts 25- between the ears 23 and 24-. The roller [5, which engages within the channeled portion of the track I2, is rotatably mounted on a pin 21 which is carried bythe-outer portion [5a of the torque arm.

Rotation of the hand crank L8 in either direction will cause the sash H to either raise or-lower,

springsZB. .When the roller [5 is in its lowermostposition, midway of the track l2, it will snap into a recess 28 provided in the bottom of the channel portion of the track. The recess 28 will tend to bring the movement of the various parts of the regulator to rest in the fully closed position of the sash, and the action of the roller [5 in snapping into the recess 28 can both be felt and heard. It will of course be understood that when the sash II has been moved into its fully raised position the torque arm [6 will be extending straight up.

With this improved regulator the sash II can be raised or lowered by turning the handle I8 in either direction, and any continued movement of the handle IS in one direction will first move the sash in one direction and then in the opposite .direction.

Because of the spring projected mounting of the roller I5, which renders the roller capable of retraction under spring resistance whenthe sash reaches its fully closedposition, the regulator will operate smoothly and easily, without jamming, even though the position of the pivotal axi ll of the torque arm be a little high or low due to error in construction or installation. Regardless of minor variations in the location of the pivotal axis ll of the torque arm, a tightly closed engagement of the bottom rail of the sash with the sill of the window will be assured. When the sash ll reaches its lowermost position the .clicking noise resultin from the snapping of the roller l5 into the recess 28 in the track is a clear indication to anyone operating the sash that the latter has reached its fully closed position.

. I claim: 7 v

1. In a window regulatingmecham'sm for raising'and lowering a vertically movable sash, a

torque arm, a hand crank connected with the .torque arm for turning the latter, a track adapted to beconnected with the sash for causing the sash to move when the track is moved, a traveler carried by the outer portion of the torque arm in horizontally movable association with the track, and resiliently yieldable means for resisting movement of the traveler toward the inner portion of the torque arm, said track comprising a horizontal channel which is provided with an indexing recess for the reception of the traveler when the torque arm reaches a vertical position.

2. In a window regulating mechanism for raising and lowering a vertically movable sash with respect to a sill, a torque arm, a hand crank connected with the torque armrfor turning the latter,

said hand crank being continuously rotatable in either direction to alternately raise and lower the sash, a track adapted to be connected with the sash for causing the sash to move when the track is moved, a travelerv carried by the outer portion of the torque arm in horizontally movable association with the track, said traveler being disposed approximately midway of the track in the lowermost position of the sash, and resiliently respect to a frame member against which the sash is designed to abut, a torque arm, a hand crank connected with the torque arm for turning the latter, said hand crank being continuously rotated in either direction to alternately raise and lower the sash, a track adapted to be connected with the sash for causing the sash to move when the track is moved, a traveler carried by the outer portion of the torque arm in horizontally movable association with the track, said traveler being disposed approximately midway of the track in the abutting position of the sash, and resiliently yieldable means for resisting movement of the traveler toward the inner portion of the torque arm, said resiliently yieldable means yielding to permit the hand crank to be rotated beyond the position in which the sash ha moved into abutment with the frame member.

4. In a window regulating mechanism for raising and lowering'a vertically movable sash, a torque arm, a hand crank connected with the torque arm for turning the latter, a track adapted to be connected with the sash for causing the sash to move when the track is moved, a traveler carried by the outer portion of the torque arm in horizontally movable association with the track, and resiliently yieldable means for resisting movement of the traveler toward the inner portion of the torque arm, said track'comprising a horizontal channel which is provided with an indexing recess for the reception of the traveler when the torque arm reache a vertical position, and said indexing recess permitting the traveler to move away from the inner portion of the torque arm under the pressure of said resiliently yieldable means. r

5. In a window regulating mechanism for opening and closing a slidable sash with respect to the frame member against which the sash is designed to abut, a torque arm, a hand crank-connected with the torque arm for turning the latter, said hand crank being continuously rotatable in either direction to alternately open and close the sash, a track connected with the sash for causing the sash to move when the track is moved, and

a traveler carried by the outer portion of the

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