US2053356A - Venetian blind mounting and locking mechanism - Google Patents

Description

Sept. 8, 1936. M. L. WIENER VENETIAN BLIND MOUNTINGAND LOCKING MECHANISM Filed Aug. 6, 1935 INVENTOR M L. WLeJZ er ATTORNEY 20 a simple and inexpensive device and yet one adjacent the open side of the hanger bracket and 20 Patented Sept. 8, 1936 Q I I UNITED STATES PATENT OFFICE VENETIAN BLIND MOUNTING AND LOCKING MECHANISM Martin L.v Wiener, San Leandro, Calm, assignor to Ry-Lock Company Ltd., San Leandro, CaliL, a corporation Application August 6, 1935, Serial No. 34,905 6 Claims. 156-47) This invention relates to a Venetian blind scribed in my copending application for patent mounting and locking mechanism, and is parand including a main rail 1 and a cap rail 8 ticularly directed to a combination hanger attached thereto in order to conceal the cords bracket and automatic cord lock for blinds of the C passing along in the enclosed channel or pasabove mentioned character. sage 9 in the main and cap rails and to also It is the principal object of this invention to conceal the cordpulleys l0 mounted in suitable provide as a unitary device a combination hanger depressions in the rail channel. These cords are bracket and cord lock, preferably adapted for use of course the ones employed to raise and lower in connection with a Venetian blind having a the Venetian blind.

10 combination head and tilt rail such as is illus- From a point close to the pulleys I0 which are 10 trated in my pending application for a United adjacent the hanger bracket, the channel 9 is States patent, Serial No. 7,685, February 23, 1935, materially and progressively deepened as well as on Venetian blind. widened, as illustrated at G in Figures 1 and 2.

A further object of my invention is to provide Thus, when the cords pass out of the end of the 5 a combination hanger bracket and cord lock rail they are surrounded by a relatively large which, when embodied in a modified form, may channel area which in efiect tapers in size back to be employed in connection with a Venetian blind the adjacent pulleys Ill. having a separate head and tilt rail. Supported within and secured to. the hanger A further object of the invention is to produce bracket is a metallic case H open on the side which will be exceedingly effective for the puralso open at its bottom. pose for which it is designed. Journaled in this case ll adjacent the open These objects I accomplish by means of such side thereof and relatively close to the bottom of structure and relative arrangement of parts as the case is a pair of pulleys I! over which the will fully appear by a perusal of the following cords C from the rail are trained. The cords 25 specification and claims. depend from these pulleys beyond the hanger In the drawing similar characters of reference bracket and down sufiicient distance for ready indicate corresponding parts in the several views: manipulation by a person standing adjacent the Figure 1 is a sectional elevation of my prewindow on which the blind is mounted.

ferred form of device as used to support a Vene- Pivoted in the case ll inwardly of the pulleys 30 tian blind having a combination head and tilt I2 is a cord gripping and locking dog l3 whose rail. toothed face is downwardly eccentric to the pivot Figure 2 is a top plan of the structure illusfor said dog. trated in Figure 1, but with the cap rail removed In use, when the hanger bracket is mounted in and the hanger bracket in section. place on a window and a Venetian blind having 35 Figure 3 is a transverse section taken on line a combination head and tilt rail is supported from 3-3 of Figure 1. the bracket, a person can raise and lock the blind Figure 4 is a side elevation of the modified form by pulling downward on the depending portion of of my invention. cords C which movement causes dog l3 to fall Referring now more particularly to the charback against the adjacent wall of the bracket free 40 acters of reference on the drawing, and at presof the cord. After the blind is raised the desired ent to the preferred form of the invention as disdistance, the cords are moved sideways in the diclosed in Figures 1 to 3 inclusive, the device comrection of and into contact with the dog 13. The prises a rectangular metal hanger bracket open cords may then be released and the weight of the on one side and the bottom. The back wall 2 blind pullm on the cords will draw the down- 45 of the hanger. is formed with openings 3 through wardly eccentric dog up and cause the dog to which screws may project to support the hanger grip the cords against the pulleys preventing in place on a window casing.- further lowering of the blind.

Extending acrossthe lower portion of the open To release the blind it is only necessary to give side of the hanger bracket between the front and the cords a slight downward pull which releases 50 back walls is a band 4 bored intermediate its ends the dog and it falls into an inoperative position to receive a pin 5 extending out from a rail supaway from the cords. The blind will then lower porting plate 6. without restriction.

Supported by the plate 6 is the combination The combination head and tilt rail may be- 5 head and tilt rail formed substantially as detilted in order to open or close the blind withoutinterfering with the blind raising cords because of the provision of the wide channel portion G which is progressively deepened and widened from the pulley to the end of the rail. Thus when the rail tilts to its greatest angle, the cords from the pulleys ill (the axis of the pulleys l0 having also moved away from alinement with the pulleys I 2 in a, transverse plane) may nevertheless extend out of the rail to the pulleys l2without interference from the rail which has tilted.

This rail may thus tilt in either direction without interfering with the blind raising cords and their functioning; the distance between pulleys l0 and I! being suflicient to permit of said pulleys moving out of alinement with each other without the cords leaving the pulleys. The holding of the cords on the pulleys is aided by the closeness of the sides of the casing H to the pulleys- I 2, and by the closeness of the sides of the channel 9 to the pulleys l0. Y

The modified form of my invention, as illustrated in Figure 4, and which is constructed for use with a Venetian blind having a separate head and tilt rail, comprises a hanger bracket 101 of sufiicient length to rigidly support a head rail H and pivotally support a tilt rail T below said tilt rail. The blind raising cords Cl extend from a channel in the fixed rail to a pulley I20, and locking dog l3a mounted in the hanger bracket in exactly the same manner as heretofore described in connection with the preferred form of my inlention, as well as serving the same function.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described my invention, what I claim as new and useful and desire to secure by Letters Patent is:

1. In combination, a Venetian blind supporting rail having a longitudinal channel therethrough, a hanger bracket, means to pivotally mount one end of the rail on the bracket, blind control cords passing through the longitudinal channel and projecting from the end of the rail adjacent the bracket, pulleys mounted on the bracket adapted to receive the cords extending out from the end of the rail, and from which the cords depend; the channel flaring in width from a point adjacent the pulleys in the rail to the bracket end of the rail.

2. In combination, a Venetian blind supporting rail having a longitudinal channel therethrough, a hanger bracket, means to pivotally mount one end of the rail on the bracket, blind control which the cords depend; the walls of the channel at the rail pulleys being close to said pulleys and diverging thence to the pivot end of the rail sufficiently to allow the cords to extend straight between the pulleys of the rail and bracket when the rail is tilted on its pivot to one side or the other.

pulleys.

3. In combination a Venetian blind supporting rail having a longitudinal channel therethrough, a hanger bracket, means to pivotally mount one end of the rail on the bracket, blind control cords passing through the longitudinal channel and projecting from the end of the rail adjacent the bracket, pulleys enclosed in the rail to guide the cords through the channel, pulleys mounted on the bracket adapted to receive the cords extending out from the end of the rail, and from which the cords depend; the walls of the channel at the rail pulleys being close to said pulley and diverging thence to the pivot end of the rail sufiiciently to allow the cords to extend straight between the pulleys of the rail and bracket when the rail is tilted on its pivot to one side or the other, and a'ca'sing in the bracket in which the bracket pulleys are mounted; the sides of the casing approaching close to. said pulleys to prevent possible jumping of the cords therefrom when the: bracket and rail pulleys are moved-out of alinement with each other by the tilting of the rail.

4. In a Venetian blind, a blind hanger bracket adapted to be mounted in a fixed position, a combination head and tilt rail projecting from the bracket, a pivot connection between said bracket and rail, blind control cords extending along the rail and into the bracket, pulleys for the cords mounted within the rail, and other pulleys for the cords mounted within the bracket; the pulleys being laterally symmetrical relative to the pivot and the tops of the pulleys being above but relatively close to the axial line of the pivot whereby to minimize the relative lateral misalinement of the portions of the cords between the pulleys when the tilt rail is turned on its pivot.

5. In a Venetian blind, a rectangular case forming a bracket adapted to be mounted in a fixed position, a blind rail extending from one end of and supported by said bracket, blind control cords extending along the rail and into the case, direction changing pulleys for the cords mounted within the case and from one side of which the cords depend for operation, and cord locking dogs pivoted adjacent their upper end in the case and disposed between the depending portions of the cords and the vertical wall of the case opposite that from which the rail projects; said wall forming a stop limiting the downward swinging movement of the dogs to such a position that the cord engaging edges of the dogs are then adjacent but clear of the cords. I 6. In a Venetian blind a fixed supporting bracket, 9. head rail projecting from said bracket, cord pulleys mounted in the bracket, blind control cords extending from the rail over and down in the bracket having arcuate gripping faces to engage the depending portions of the cords adjacent and on the side thereof opposite the pulleys, apivot support in the bracket for said dogs disposed adjacent the upper end of the dogs,.and means limiting the downward swinging movement of the dogs, the arcuate faces of the dogs being eccentric to the pivot in a downward direction and the upper end of said faces, when the dogs are in their lowest position being adjacent the cords-and substantially in the plane of a line projected through the pivot and the center of the

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