US 1808455 A
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June 1931- w. E. DUNCANSON 1,808, 55
VENETIAN BLIND Filed MarcJi 30, 1928 4 Sheets-Sheet l I N V E NTO R ilz'zlzcrif 4012720422101;
June 2, 1931. w, DUNCANSON 1,808,455
VENETIAN BLIND Filed March 50, 1928 4 Sheets-Sheet 2 INVENTOR Jfine 2, 1931. w. E. DUNCANSON 1, 8,
VENE'TIAN BLIND Filed March 30. 1928 Sheets-Sheet 4 UM! "Wm III INVENTQPC Patented June .2, 1931 UNITED STATES WALTER E. DUNOANSON, OF NEW YORK, N. Y., ASSIGNOR '10 J. G. WILSON CORE,
NEW Yoax, N. Y.', a coarona'rzou or vmemra PATENT oFl-ucs' vENErLaN BLIND Application filed March so, 1928. Serial no. 265,855.
enetian blind the traverse rollers have been mounted in various ways but so far as I am aware 1n no instance has a condensed construction of the traverse roller been employed in a casing to conceal the operation of the. same as is contemplated in this case. In the usual type of Venetian blind it has been customary to employ a roller cord'wound upon the traverse roller. The usual practice has been to' place this roller cord on the traverse roller between the lifting cords, and has resulted in a lifting means extending diagonally across the face of the blind and also across the'opening when the blind is up. Furthermore, it is customary to employ a lifting bar which is lpermanently connected to the lifting cords an thru which the raising and lowering of the slats is ef-' fected.
.The object of the present invention is .to overcome these several difficulties and disad vantages and in carrying out the same this Venetian blind structure is acondensed one in which the traverse roller is mounted in a casingawhich encloses the same, and isadapted to e secured in osition on either side of a window casing or tween the facesthereof. In accordance with this invention, furthermore, the cord employed for actuating the traverse roller is mounted at the end thereof and preferably between one of the; lifting cords and the adjacent extremity of the roller, 9. flange being associated with the end of the roller for maintaining the'roller cord in place thereon. By this structure the actuating cord is placed at one side ofthe blind and preferably beyond the corresponding ends of the slats so as not to'han in front of the blind'or across the opening. till furthermore, in carryini; out the present invention the-lifting bar emp oyed is so oonnectedto the'liftin cords as to be readily detachable therefrom, t ereb ermitting an easy and quick means of rea ustment of the lifting bar. Venetian blinds In the drawings Figure 1 is an elevation algd artial cross section illustrating. a form 0 Fig. 2 is an enlarged section on line 2-2,
Fig. 3 is also an enlarged section which 1s taken on line 3-3, Fig. 1,
' Fig: 4 is an enlarged sectional plan taken on line 44, Fig. 1,
Fig. 5 is a sect1on on line 5 -5, Fig. 4. Fig; 6 is an elevation showing a modified structure of one end of. a traverse roller,
enetian blind made in accordance with my present lnventlon.
Fig. 7 is a view similar to Fig. 1 showing i an other form of the invention Fig. 8 is an enlarged sect1onal elevatlon illustrating the'parts associated with a-traverse roller at one end thereof, and
Fig. 9 is a section on line 9-9, .8.
Referring to the drawings an particularly to Figs. 1 to 6 inclusive it will be seen that the Venetian blind made in accordance with this invention is adapted to be apphed to the inner side of a window casing, the inner pright faces of which are designated respectively at 10 and 11. Y t
'In carrym out the inventionI employa' 7 casing 12 which is adapted to completely enclose a traverse roller 13. The casing 12 as illustratedin this form of the mventlon may be .mounted on brackets 14 and 15 or otherwise secured in position relat1vely to the mner: faces of the window casing. At one end thereof the traverse roller 13 is mounted on a screw stem 16 suitably su ported by a.
bracket 17 or otherwise fixe at the corresponding end of the casing. -At the opposite end the traverse roller is mounted on a stem or axle 18 fixed in a bracket 19 and which like the bracket 17 may be suitably secured 1n position in the casing. It wll be. understood that the traverse roller is shifted longitud1= nally by means of the screw stem 16 as is cus tomary in like structures and also that the traverse roller and the stem or axle 18 may beso associated as to provide for the proper shifting of the traverse roller even when the screw stem and the axle. are not precisely inali ent. v
i dciated with the'traverse roller there 1s mo an actuatin cord 20. One end of this cord is suitably p aced adjacent one end of the roller and is wound a certain number of times around the roller and then passed through an opening 21 provided therefor in the bottom wall 22 of the casing. At this end of the traverse roller the same is preferably fitted .with-a flange23 in order to maintain the ache Venetian blind also includes a tilting bar 25 suitably mounted in brackets 26 and 27 connected to and depending from the casing 12 or otherwise. Inac'ustomary manner the tilting bar is'fitted with depending longitudinal tapes'28 and 29. These ta es are emplo ed in sets or pairs and associated therewit in spaced positions there are cross tapes, as, for exam le, the longitudinal tapes 28 and 28' are fitted with cross tapes 30 for supportin the slats 31 of the blind. At the bottom or ower ends of the longitudinal tapes 28 and 29 there is the usual lifting bar 32. The cords by which the lifting bar and the slats are raised and lowered are indicated at 33 and 34. These lifting cords are-similarly arranged. The liftin cord 33 at one end is suitably secured in t he traverse roller 13 and passes through a hole or o nin 35 in the bottom wall of the casing, t roug an opening provided therefor in the tilt1n bar 25, as indicated at 36, and through ho s or openings 37 ineach of the slats 31. The lower outer end of the lifting cord is then threaded through a loo 38 in a cord connector 39, the extremity'o the'cord being then lmotted as clearly indicated in Fi 4.
In the upperfiace of the lifting bar 32 there is a recess 40, lying within which there is a screw eye 41. The relationship of these parts is such that the knotted end of the lifting cord and the cord connector may be passed through the eye of the screw eye in order,.as
will belunderstood, to permit the cord connector to abut against one side of the screw eye to connect the lifting cord to the lifting bar, making the lifting bar readil connectibleto' and disconnectible from t e lifting cord. The cord connector 39 .is referably made of a relatively short lengt of comparatively stout or stiff wire having the central portion thereof bent or formed in a loop 38 throu h which the end of the lifting cord is a e? and ieknotted, as aforesaid, it being understood that the length of the connector 39 is suflicient toextend beyond the oppositely disposed parts of the screw eye 41, that is, the lengthof the connector after the secured to a hook 24 diameter of the loop 38 is appreciably smaller than the inner dlameter of the eye of the screw eye 41 whereby after' the end of the lifting cord has been passed through the loop 38 and knotted the connector and its loop with the knotted end of the lifting cord may be readily threaded throu h the screw eye 41 to detachably connect the ifting cord to the lifting bar, and obviously also the lifting bar maybe readily disconnected from the lifting cord b reversin this operation. Inasmuch as the ifting cor 34 is similarl connected to the traverse roller and the lif ting bar it is unnecessary to repeat the description of making these connections.-
In instances where it is necessary or desirable to have the diameter of the traverse roller increased to secure greater lifting power, a shell is put on the end, as indicated at 43 in Fig. 6. This drum '43 on the traverse roller shifts its position by reason of the threaded support 16 at one end so as to accommodate the lifting cord without crossing it, and a flange 44 is secured at the end to keep the cord on the drum. In this structure the axle at the end of the roller is indicated at 45. As
will be understood, the drum 43 being of greater diameter than the traverse roller described the blind is adapted to be fitted on the face of a window casing and the traverse roller is mounted in a container 12 to be secured to the face. In another form the blind may be mounted so as to extend merely between the j ambs of the window casing and to be secured between the same, as illustrated in Figs. 7, 8 and 9. In these figures the end walls 48 and 49 of the casing 12 lie against the oppositely dis osed inner faces of the window casing or jam a In this construction angle supports 17 and 19 make it possible to make a very much con- 'densed form of Venetian blind overhead, and the container having. a substantial bottom bar 22 permits a construction easily detachable in workable assembly from the supports 14 and 15 on the face of a window opening.
When secured to and operated between the j ambs the operating cord 50 is secured at one end to the traverse roller and is wound a number of turns around the same, and .then passes over the pulley 51 mounted on an axle 52 in the lower wall of the container and then .over'a pulley 53 mounted on an axle 54 also in 130 rake device 47 secured to the bottom l the lower wall of the container whereby through this right angle pull'the 0 erating cord is carried to the end of the blin and beyond the ends of the slats where it may be operated and secured to a suitable hook 55 provided therefor in the inside face of the window casing. Otherwise the construction of each-part of the blind as shown in Figs. 7, 8 and 9 is specifically the same as that disclosed in the other form of the invention.
I claim as my invention:
' 1'. In a-Venetian blind construction, having means se-' a rotatable traverse roller liftin cured in a-box, the box arrange to detachably support on brackets fastened to the window opening, a blind in assembled formation,
a tilting bar for tilting the.slats,'tiltably secured to the underside of the box, and means secured to the tilting bar for supporting and tilting the slats, incombination with a cord depending from the rotatable, longitudinally moving lifting. mechanism in the box to a" position alongside of the slats for raising and owering the slats.
2. In a Venetian blind, an assembled structure including a casing in the form of a box, mountable and demountable from brackets fastened to a window opening, a traverse roller supported for movement within the easing, a tilting bar pivotally secured to the easmg or box, and sup orting with tapes, a plura ity of slats there om, a cord for operating said'tilting bar and slats from one angular position to another, supporting cords connectedto the traverse roller and passin through the box and slats for raisin and owering the slats, and a traverse ro er operating, cord wound on one end of the traverse roller and extending downward beyond the slats, in
whiohposition the cord is operable to simultaneously move the roller on its longitudinal axis to maintain the cord in the same relative position beyond the ends of the slats.
Signed b me this 20th day of March, 1928. p ALTER E. DUN CANSON.