US1453845A - Mechanical window lift - Google Patents

Description

May 1, 1923. 1,453,845

w. KOPP MECHANICAL 'WINDOW LIFT Filed April 26. 1918. 3 Sheets-Sheet 1 a I I I lmwntoz May 1, 1923. 1,453,845

- w. KOPP MECHANI CAL WINDOW LIFT Filed April 26, 1918 3 Sheets-Sheet 2 a w 14 \m a May 1, 1923. 1,453,845 w. KOPP MECHANICAL wmvow LIFT Filed April 26', 1918 3 Sheets-Sheet 3 I I I abiOGMG J Patented May 1, 1923.

umrao stares WILLIAM Korr, or DETROIT, MICHIGAN, ASSIGNOR T0 Josnrii N. SMITI-Itt 00., "or r DETROIT, MICHIGAN, A oonroae'rron or MICHIGAN;

MECHANICAL WINDOW LIFT.

Application filediipril 26, 1918. Serial Ito- 230,366.

To all whom it may concern.

Be it known that 1, WILLIAM Kore, a citizen of the United States, residing at Detroit, county of Vayne, State of Michigan, have invented a certain new and useful 11nprovement in Mechanical WindowLifts, and declare the following to be a. full, cleaiyand exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being hadto the accompanying drawings, which form a part of this specification.

This invention relates to mechanicalwindow lifts and a primary object of the inven tion is to provide av device for raising and lowering sash relative to a frame that may be readily and easily operated and automatically lock the sash in position- The device is particularly adapted for use with sashes housed between the side walls or panels of an automobile body or door and adapted to be raised relative thereto toclose the vehicle and provide an open or closed panel in the body. Various novel features of the invention are involved inthe means for raising the sash operable from the interior of the door or body of the vehicle and adapted to raise the sash and bring the same to position to engage over the lower rail of the window opening to provide a weather tight joint. An additional feature-of the invention is involved in the means for opcrating the window whereby the sash may be partly raised and locked in. any desired position either fully or partially closed or fully open. These general objects and the several novel features of the invention are hereinafter more fully described and claimed and an embodiment of the invention is shown in the accompanying drawings in which- Fig. 1 is an elevation showing my improved operating window lift anda part of a sash and frame therefor, the sash being partly'raised. I

Fig. 2 is a similar elevation from the opposite side,.illustrating the position occupied by some of the parts when the sash is practically fully raised.

Fig. 3 is a sectional view showing the rail at the bottom of the sash opening and a sec-v tion of the lower part of the sash and operat ing means therefor for drawing the same to place over the cross-bar or rail. A a

Fig. 4 is an elevation showing the gears is a cross section taken on line g/ -g which the sprocket chain is attached and utilized in forcingthe window up or down. Fig. 9 sa cross sectiontaken-online E-E of F1g. 8.,

Fig. 10, is a cross section taken on line FF of Fig. 8.

Flg. 11 is an edge view of a chalnhnk pivotally connected with the'cam of Sand the lug for engaging the cam.

Fig. 12 is a plan View of the link.

Fig. 13 is an elevationshowing the relationship of the chain links. 7

Fig..l 4 is a side view thereof.- The apparatus for operatingthe window sash is mounted on a crossbar l of a window frame, the side member of which is shown at 2, and it is to be understood as being grooved to receive an edge of the sasheas shownby dotted lines at the right of Fig. 1. The ap paratus is mounted on a plate 3 secured to the cross bar 1 in any approved manner,

and this plate hasrotatably mounted thereon i a combined sprocket and gea rwheel AL The gear teeth are of the usual spur gear type and the sprocket is formed by the studs. or y pins 5 equidistantly positionediin acircle on the inner face of the gear wheel. This gear and sprocket wheel 4 is driven aagear. 6 mounted on the same side of the plate as will be understood from Fig. 5. The gear 6 is provided'with-a hub'riding in an aperQ]; ture'provlded inthesaid plate 3 and has attached thereto a plate 7 spaced fromthe hub by the side flanges 75 andheld by means of screws 8. This plate 7 has a centralaper ture 9 which. aperture has a pair of oppositely disposed lugs] 10 projecting thereinto for a purpose hereinafter mentioned.., Bee;

tween the plate 7 and the hub of the greanfiis positioned a pair ,of locking bars 11 and 12'. These bars are each. substantially U shaped in form and are positioned in reverse relation with the leg of one inserted between the legs of the other as shown particularly in Fig. 4 Each outer leg of'both the bars 11 and 12 is provided with a tooth 13, which normally projects into spaces 14 between a circularly arranged series of lugs 15 formed onor secured to the plate 3 as will be understood from Fig. &. A U shaped spring 16 is interposed between the outer leg of one U and the inner leg of the other in both instances tending to move the bars outwardly with the teeth or lugs 13 engaging between the said circularly arranged lugs 15, and this movement forces the inner legs of the bars to adjacent relation although spaced apart as shown providing a narrow elongated slot centrally in alignment with the aperture 9 in the plate 7. To guide the bars in their movement the plate 7, which is to be understood as being removed from the face of the said bars in the Fig. 4, may be provided with side flanges 7, shown in Fig. 7 and indicated by dotted lines in Fig. 4, which serve to prevent displacement of the bars. The bars 11 and 12 and plate 7 therefor are preferably provided with a cover plate 19 as will be understood from Fig. 5 which may be secured to the plate 3 in any desired manner. I

The gear 6, it will thus be understood is normally held in locked position by reason of the introduction of the lugs or teeth 13 on the bars 11 and 12 respectively between the lugs 15 on the plate 3 preventing rotation thereof and the purpose of this will be described hereinafter. To rotate the gear, a handle 20 is provided preferably rotatably mounted in a plate 21 adapted to be secured to the cover plate 19 holding the end 22 of the handle in position extending through a central aperture 23 in the cover plate 19 and through the aperture 9 in the plate 7 and between the adjacent faces of the inner legs of the U bars 11 and 12. The end 22 of the thereof into engagement withthe opposite lugs 10 projecting into the aperture 9 on the plate 7 which contact enables the handle to rotate the plate carrying with it the gear 6 by' reason of its connection therewith. O-n release of the handle after desired rotation of the gear 6 the springs 16' automatically force the tongues or teeth" 13 between the lugs 15 and locks the gear in any of the various possible positions and in the event that the lugs 13 should engage against the face of a lug 15, slight pressure on the gear 4: would tend to rotate the gear 6 until the teeth 13 were disposed opposite the opening between the lugs 15 whereupon the gear 6 would be locked thus locking the gear 4 from rotation. The gear 4 on the inner face thereof has a chain one end of which is pivotally attached at 30 to the gear and the other end of which is pivotally attached to a block 31 carried by the window sash as will be understood from Fig. 1. Each of these links, except the link pivoted at 30 to the gear, is provided with a notch 32 to one side of the pivot point of the links as will be seen in Fig. 13. These notches are undercut as shown and the pins 5 on the gear are preferably provided with a head to allow these notched portions of the link to engage therebeneath as will be understood from Fig. 1. The-links are thus supported on the pins after the manner of a sprocket. The links further are provided at the said notched end with a lug 33 which engages in a notch 34; on the opposite end of the attached link. By this type of joint the links may be turned on the pivots in one direction and that is toward the notched side 32 and, when brought to alignment in the manner shown in Fig. 13 and in the lower part of Fig. 1, the chain becomes sufficiently rigid at the joints to prevent further turning thereof, in a direction reverse to thatin which they turn about the sprocket. It is to be understood that the links of the chain when in the position shown in the lower part of Fig. 1 are not exactly in straight line as is indicated but that the lugs 33 are so positioned as to allow the joints to be turned slightly more than 180 degrees and thus are slightly to the right of a straight line from the pitch line of the gear to the point in engagement with the block. Thus, with pressure applied by rotation of the wheel to force the sash downward the said pressure tends to turn the links to still greater angle but, by reason of being prevented by the lug, sufl icient rigidity is secured to cause the desired movement of the sash by operation of the gear wheel. Buckling of the chain to the left from the position in Fig. 2 is thus prevented. The lug 33 and notch 34 are so positioned to allow the links to turn backward slightly beyond a vertical relationship whereby pressure exerted on the end of the chain tends to turn the links backward relative one to the other. This being limited by the lug 33, force may be applied at the end of the chain and the sash moved downward in its frame by reason of the connection of the lower end of the chain with the block 31 carried bv the sash. By this arangement an endless ing a cam face.

' walls of the notch.

lug 1s provlded wlth an angular face 57 shown more particularly in Fig. 3, and whenchain of sufiicientlength, toreach from the sash at its lowermost position to the sprocket. x

The block 31 rides in a way provided be- :tween, the lower sash bar 50 and a bar 51 secured thereto. The lower end link 32 of the chain is shown in detail in Figs. 11 and 12 from which it may be seen that the link is provided with a. trunnion 52. adapted to.

fitin an aperture 53 in the block, a, detail of which is shown in Figs. 8, 9 and 10. This block is notched as indicated at 54, the notch opening into-the central aperture as shown,

and opens through the upper edge of the block and through the left side thereof as shown in Fig. 8 at which point one wall of the notch is'beveled as shown at 55 provid- The end link 32 adjacent the trunnion 52 is provided with a lug 56.

With the trunnion 52 in place in the aperture 53 of the block 31 and the link in vertical position as shown in Fig. 1, the lug 56 occupies the upper vertical-part 54, of the notch therein and is out of contact with the The lower side of the the link is turned to horizontal position, whichis the position occupied thereby when the chain has been turned about the sprocket to bring the end link to the position shown in Fig. 2, the angular face of-the lug is brought in contact with the face 55 of'the block. It is to be noted that on rotation of the gear a: and winding the chainon the j sprocket provided on the gear, the sash is f raised in. the frame by reason of the connec-- tion of the chain with the said block 31. ,As the chain reaches its uppermost position'as shown in Fig. 2 (in which the gear and'links are shown by dotted lines in position thereon and the block .56 in full lines relative to the cam face of the block3l) the block rides longitudinally in the way provided and is thus carried by the link. to the left toythe position shown in Fig. 2 to bring the end link'in horizontal position with the lug 57' in engagement with the angular face 55 of the block. hen the block has reached the position shown in Fig. 2 the window has been raised to its full extent, slightly above the cross rail 90 of the windowfran'ie as' shown in Fig. 3; A continued movement,

from the position shown in Fig. 2 causes the lug 57 to engage the cam 55 andthe chain.

being held in position on the-wheeltherefor forces the lug downward against the cam face 55 and moves thelower end: of the sash in the direction shown by the arrow in Fig. 3 so that the lip 60 carried by the outer face of the sash is brought overthe weather strip 61 on the rail"90, thus 2 making a weather tight joint. It is to be noted that, as theblock'31is moved to the left by this final rotation of the gear that as the pivotal placed.

point of thjejlink 32- reaches the highest point vertically. above the, center of the; gear, the

further, the sash will be moved downward.

. highest position of the sash is attained as.

shown in Fig. 3. If thegear be rotated.

inasmuch as the said pivotalpoint ofthe-v link. 32 begins to travel. downward with-the gear from this high point. .Thereforeas the, block passes the high point, the) end of 1 the sash is moved. first outward ver the weather strip 61 and then downward-into engagement wit-lithe strip the engagement of the lug with the cam. On reverse direction of. rotation ofthe gear and chain thereon, the first movement of the 61. by reason of sash is upward by reason of the pivotal. point of the chain and block "moving up-v i beunderstood from Fig. 1. I

The normal position of thesash50 rela-i tive toithe bar isjshowninj full lines-in. Fig. 3-111 whichposition thesash is vertical."

The groove in the window framefor the said sash 60'is to be understood as being of such form, however, as to allow the lower end of the sash to be moved to the posit-ion shown;

by dotted lines in Fig. 3 with themember 60 engaging over the weather strip; 61', the cam arrangement above-.descrlbed be ng of a character to force the lower endof the sash out of its normal position. On revers 'ing the operation as above described toraise the sash from engagement,withthestrip 61, the sash will naturally returnto the position shown by full lines in when the cam members are out of contact due to the tendency of the sash to swingfinwardto normal vertical, for,. 1 I

If the sash has been moved part way through rotation of-the handle, releaseof 11'0" position in the groove the redownward by rotation of the gears shown the handle at any point will allow the teeth- 13 on the bars 11 and 12 tobeextended into the notches between the teeth 15 which holds the gear 6,. and consequently the. gear tin mesh therewith, from rotation. By this a r3 rangement the sash ,may be locked in any intermediate position as may i be .desired This is ofyalue in that it is frequently desirable to have :a window of a closed type of automobile'body partly open and in such; I

as not to he accidentally .dis-

rig-id. position It is preferable that a-spira lspring, 70 be provided to. act. as acounterweightfor the Y sash. This spring is shown inFigs. 1 and 4 andv should preferably be positioned between the gear 4 and the supporting plate with one end attached to the gear and the other end to the plate. I

From the foregoing description it is evident that the device is simple in construction and veryeasily operated, and that the sash is forcibly moved either upward or downward as may be desired and is locked in any position and may be moved in either direction from the locking position by rotation of the operating handle in the desired direction.

Having thus briefly described my invention what I claim is- 1. In a mechanical window lift the combination with a frame and sash slidable therein, of a sprocket, a chain connected therewith and with the sash in such manner that rotation of the sprocket in one direction or the other causes upward or downward movement of the sash in the frame, a gear for driving the sprocket, a plate fixedly supported in spaced relation with the gear and having a central aperture, a pair of springactuated locking bars supported between the plate and the gear, means engaged by the bars when released to action by the springs preventing rotation of the gear, and a handle device for rotating the gear, said handle device being adapted upon turning thereof to first withdraw the locking bars from looking position and upon release of the handle to release the bars to return to locking position by action of'their springs.

2. In a mechanical window lift the combination with a frame and window sash slidably mounted therein, said frame having a cross bar and-the sash having a bar adapted to seat over said crossbar, of a rotatable element supported by the frame, a block secured to and slidable longitudinally of the lower sash bar, a chain having one end connected with the rotatable means and the opposite end connected to the block, rotation' of the said element raising or lowering the sash in the frame by means of the chain, and means carried by the chain and engaging the block adapted to force the sash laterally when in the uppermost position over the said cross bar and thence downward into weather tight engagement therewith.

3. In a mechanical window lift, the combination with a frame and sash slidable therein, said frame having a cross bar, of a block carried at the lower edge of the sash and movable longitudinally thereof, a sprocket rotatably supported by the frame, a chain having one end pivotally attached to the sprocket and the other end pivotally connected with the block said block having a cam face, the end of the chain connected with the block beingprovided with a lug adapted to engage the said cam 'face when in horizontal relation withthe block and to withdraw from engagement with the cam face when in vertical relation with the block, means for rotating the sprocket to raise or lower the sash, the links of the chain being pivotally connected to turn in one direction. and to a limited extent in the opposite direction whereby force applied to the links when free from. the sprocket forces the sash downward, an upwardly projecting strip carried by the lower cross bar of the window opening, and a complemental strip carried by the lower bar of the sash adapted to engage over the strip on the cross bar, the engagement of the link with the cam face of the block when the sash is raised to its uppermost position forcing the sash laterally over the cross barand continued movement of the sprocket and consequent movement of the block in its way drawing the window downward with the complemental strip en'- gaging over the projecting strip on the cross bar, i

4. In a mechanical window lift, a sprocket, a chain connected therewith and to the sash in such manner that rotation of the sprocket in one direction raises the sash and in the opposite direction lowers the sash, a gear for driving the said sprocket, a plate apertured to support the gear, a plate fixedly supported in spaced relation with the gear and having a central aperture, lugs projecting inwardly from opposite sides of the aperture toward the center thereof, a pair of locking bars supported in position between the plate and the gear, said bars each having terminal lugs or teeth, the supporting plate for the gear being provided with circumferentially positioned spaced lugs between which the teeth of the bars are adapted to engage, an operating device for the said gear having means thereon extending through the aperture of the said plate and between the locking bars, the arrangement being such that on operation of the said operating device the teeth ofthe bars are first withdrawn from between the lugs of the plate whereupon the internally projecting lugs of the central aperture are en aged by said means and the gear rotated, springs adapted to force thebars to locking position, the release of the. said operating means allowing the springs to force the teeth of the bars into engagementbetween the lugs. 1

5. In a mechanical window lift in combination with a f nine and window sash slidable therein, of a sprocket rotatably mounted on the frame, a block at the-lower end of the sash mounted to slide parallel with the plane of the sash, a chain having one end attached to the sprocket and the other end pivotally connected with the block, the links of the chain being pivoted together in a manner to allow the turning thereof about the sprocket and further being provided with means limiting the relative turning of the chain may act as a bar to force the sash downward on rotation of the sprocket said block having a cam face and the link pivotally' connected with the said block having a lug adapted to engage the cam face as the link is turned on its pivot, said block,

vcam and lug as the end link rides over the sprocket at the completion of the upward movement of the sash, cooperating to first force the sash outward and then downward,

a cross bar for the frame and a corresponding bar on the sash adapted to engage over I the cross bar of the'frame when forced outward and-downward.

In testimony whereof, I sign this specification. 1 i

WILLIAM KOPP.

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