US2480993A

US2480993A - Venetian blind

Info

Publication number: US2480993A
Application number: US689153A
Authority: US
Inventors: Adler Charles
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-08-08
Filing date: 1946-08-08
Publication date: 1949-09-06
Anticipated expiration: 1966-09-06

Description

Sept. 6, 1949. c. ADLER 2,480,993

VENETIAN BLIND Filed Aug. 8, 1946 3 Sheets-Sheet l JNVENTOR. CHARLES Alum Sept 6, 1949.

v c. ADLER VENETIAN BLIND Filed Aug. 8, 1946 3 Sheets-Sheet 2 INVENTOR.

CHARLES A01. ER

4% Hum ye Sept. 6, 149.,

Filed Aug. 8, 1946 c. ADLER VENETIAN BLIND 3 Sheets-Sheet 5 1 1 1 y l 7 0 I INVENTOR. CHAR LES HDLER Patented Sept. 6 1949 =V-ENETIAN"BLIND Charlesndler qlinoinnaltii Qhio V 7 Application Angust' 8, 1946, Serial N 0568913 ii-Claims. (Cl: ISO- 1 73) :1 --This invention relates to improvements in :Venetian blinds and-particularly to the -so-.ca1led hardware for mounting: the raisingand lowering rope or ropes.

Infthe past when-it was-desired to replace or change'the-rope or ropesassociatedwithiaVenetian' blind A for raising and lowering the slats thereof, it was necessaryto 7 completely remove ft'he blind from the windowor other opening: and completely disassemble a it I whereupon the blind had to be reassembled practically. slat by-.slat.'

* 'Ihis same condition-existed withrespect-to the replacement or changing of the so-called ladder" tape which holds theslats intheir spaced apart relation when the blindis in extended position.

'iBy this invention each of the foregoing disadvantages of a Venetian-blind is eliminated.

Itis, therefore, the-prineipal object of -thepresent invention toprov ide a Venetian blind wherein 1 the raising and lowering cord can-bereadily and easily replaced.

Another object of this invention is the provision of a Venetian blind, and particularly the hard- "ware --thereof, whereb the a blind including{ the head rail, tiltboard, slats and bottomrail earl-be assembledin a minimum of time and withla great 'Savingin time over the assembly-of said parts ;as required in the-past.

Another object of this invention is the provision of a Venetian blind wherein the slats raising and lowering; cord can bechanged while the blind is r hanging in its normal position.

A furtherobject of this invention is the-provi sion of a Venetian blind wherein the raising and lowering cord and the slat spacing tapes'oan be changed or replaced without removing the blind =rrom its opening, disassembling theblind in any manner, and wherein the said ladder tape or slat spacing tape can be replaced without removing the raising and lowering cord.

A still further object ofthis invention is the provision of hardware for use in a Venetian blind to accomplish the foregoing objects and which lhardwareis simple in construction and economical to manufacture.

A still further object of this invention is the provision of a simple wire clip which cooperates with the ladder steps of the'ladder tapesto preventthe lateral or other shifting of the said tapes during the operation of the blind.

Other objects and advantages of the present invention should be readily apparent by reference to the following specification considered-in conjunction with the; accompanying drawings formany modifications may bemade-in'theexaet structural detailsthere -shown-'and described within the scopeof the appended claims, "without: depart- -ing iromorexce'eding the spirit oftheinvention. ln the drawing's:

Big 1 is an: elevational view ot aVenetianblind 1 illustrated as mounted in a: window openingand --which blind incorporates" the =-improvements 'of --this- .invention. Y

-F-ig. 2 is a vertical seetional view-through the blind oi F-ig l-tal en on-line 2----2 on said Fig. 1.

=Fig.-;3 is anenlargedefragmehtary view-par-tly 1 in section and partly intelevationtaken on line -3-53 genie. 1. v l5 F ig.-' l- -is-a fragmentary vertical-sectional view I F-igiffa is a perspectivefview oi a-plate or bracket utilized inmounting the ladder tapes and-forming ad-etail of the invention.

2O -'-Fig.-6 isa fragmentary perspective-view of a iadder tape utilized in carrying forward the present-invention. x

f Figfl? is an enlarged bottom plan 'viewof a rportion of a slat of a- Venetian-blindshowing the imv -proved olipofthepreseritinvention and seen from line 1+1 on llfigi fi.

Fig-Sis afiragmentary elevational view oi the {head rail of a" Venetian blind having. mounted {thereon the hardware oi the present invention.

--Fig.- 9is a view -partly-in seetionand partlyin elevation illustrating the cord look as seen from 'line 9- 9 Orr-Fig 8. m

Fig. B10 is a vertioal sectional view of the cord {lock-takenon-1ine--l0l-0 on Eig 9.

Fig. 11-is aperspeetiyie view of the loekingdog assoeiated-with thecord lock of the present iiivention and'iorming adetail-oi the invention.

#Fig: 12 is a fragmentary v iew partly in section and partlyin elevation showing thernounting of the'jtilt bar of a Venetianblind as SBBIif OIn line .T'F r 13.. i i l ep Yer n fi l ila View i'ih l zon -9 thesn ,ql ra e raertsas seeafrqmiin Fi 14 ,S, a perspegtiye view, of a .cordroller and; its nountingbraohet.

- le re lerl i eqlfi at e ipi m c a i m for aocomplishing thepurposes: ofthe-present-in- .verrtipn.

l mei a? verticall sectional view-through the ..cord lock,ofr Fig. 15, taken orrlin'ez I 6.-.l fi-on said #:E-ig; :15. I

iiig apart thereof and it isto-be-understood that Fig;*l'l isasectionalview through thevcord roller 3 of the modification in Fig. 15 taken on line "-41 on said Fig. 15.

Fig. 18 is a transverse sectional view through a further modification in the details of the invention and a construction which may be substituted for that illustrated in Figs. 13 and 17.

Fig. 19 is a fragmentary perspective sectional view of a ladder tape showing a construction thereof somewhat different from that of Fig. 6 but accomplishing the same purposes as the construction of said Fig. 6.

Fig. 20 is an enlarged vertical sectional view through a portion of the Venetian blind as seen from line 20-2Il on Fig. 1.

Throughout the several views of the drawings similar reference characters are employed to denote the same or similar parts.

This application discloses additional improvements in Venetian blinds and their construction over that disclosed in applicants pending applications Serial Numbers 609,069 and 667,870 now U. S. Patent 2,471,710 issued May 31, 1949.

The Venetian blind as heretofore known and used comprises a head rail 29 mounted relative to an opening illustrated in the drawings by a window frame 2| with the head rail secured thereto by

brackets

22 and 23. Below the head rail 26 is a tilt bar 24 pivotly carried by the head rail through any suitable or desirable means such as the bracket 25 at the left hand of the tilt bar and the depending member 26 at the right hand thereof. The depending member 26 forms a part, as is usual construction, of the'cord locking mechanism and will later be described in detail. The tilt bar bracket 25 is a part of the tilting mechanism indicated in the drawings by the reference numeral 21 from which depends

cords

28 and 29 whereby the said mechanism 21 is actuated for oscillating the tilt bar 24 about its longitudinal axis.

Below the tilt bar 24 are the slats 30 which vary in number depending upon the height of the opening to be covered and the slats further varying in number depending upon the width of the individual slats. The slats are spaced from one another by tape assemblies 3| and 32 which have their upper ends secured to the tilt bar 24 by means to be subsequently described and which tape assemblies have their lower ends secured to a bottom rail 33.

Each of the tape assemblies 3| and 32 is substantially identical and as particularly illustrated in Fig. 6 comprises a forward flexible tape member 34 and a rear flexible tape member 35. The

tape members

34 and 35 each have a similar opposed vertical edge spacedly connected to the other by a plurality of slat supporting members or ladder steps 36, there being as many slat supports or ladder steps 36 as there are slats in the blind. The ladder steps or slat supports 36 are illustrated in the drawings as having their

opposite ends

31 and 38 secured, respectively, to the inner opposed surfaces of the

tape lengths

34 and 35. It should be noted however that in the manufacture of a tape assembly the said

ends

31 and 33 are in reality woven into the

tape lengths

34 and 35 thereby resulting in merely a thickening of said tape lengths at the points of securement of the said ladder supports.

It will be noted from Fig. 6 that the slat supports or ladder steps 36 are mounted one below the other in a vertical alignment and each on the same side of the raising and lowering cord 39 which passes between the

tape lengths

34 and 35. This is the ideal construction while with certain of the weaving looms now in use the said slat supports or ladder steps can not be so formed but must be offset from one another whereby alternate ladder steps are in vertical alignment but are offset with respect to the adjacent step above and below. This construction is illustrated in Fig. 19 wherein the tape length is indicated by the reference numeral 35', the slat supports or ladder steps by the reference numeral 36' and the ends of said slat supports or ladder steps by the reference numeral 38'.

Any suitable or desirable means may be employed for securing the

tape lengths

34 and 35 of the tape assemblies to the tilt bar 24 that illustrated in the drawings being a preferred one for purposes of illustration only. The means there described comprises a bracket 40 illustrated as a flat member relatively thin and substantially U shaped in plan including a base 4| and

arms

42 and 43 extending from the ends of said base. The

arms

42 and 43 are each, respectively, provided with an elongated

rectangular opening

44 and 45 into which the ends of the tape layers 34 and 35 are respectively inserted. The ends of said tape layers 34 and 35 are respectively secured to the bracket 40 by each having secured thereto a metal clip or end 46 which has a length slightly greater than the length of its aperture wherefore it impinges against the under side of its plate beyond said aperture and cannot be pulled through the aperture by a direct pull on the tape. In order to secure the bracket 49 in position on the tilt bar it is provided with apertures 41 through which extend screws 48.

The attachment of the lower ends of the

tape lengths

34 and 35 to the bottom rail 33 may be accomplished in any suitable or desirable manner, that illustrated in the drawings consisting merely of folding the lower ends 49 and 59 of said

tape lengths

34 and 35 onto one another against the under surface of the bottom rail 33 and passing therethrough suitable fastening members such as tacks 5|. This method of fastening the lower ends of said tape members is clearly illustrated in Fig. 20.

In the past it has been customary to form the slat supports or ladder steps 36 alternately on opposite sides of the vertical center thereof whereby the said slat supports or ladder steps alternately engaged opposite sides of the raising and lowering cord 39. By the present invention, and that of the aforementioned co-pending application Serial No. 667,870, all of the ladder steps or slat supports are on the same side of the cord 39 and will prevent the shifting of said tape assembly transversely of the blind that requires crossing the said cord. To insure the tape assembly from shifting in the opposite direction use may be made of the clip illustrated in Fig-7 and indicated in general by the reference numeral 52.

The clip 52 consists of a single length of wire bent on itself to provide a loop having legs 53 and 54 which slightly diverge from their joined end 55. The legs 53 and 54 then converge and cross one another as

arms

56 and 51 with each arm having, respectively, at its outer end a reverse curve 58 and 59 terminating in

spring fingers

60 and 6!. The fingers 60 and SI may be slightly offset from their arms 56 and 5! whereby they engage and straddle the slat 39. This attachment of the clip 52 is accomplished by having its legs and arms lying against the under side of the slat with their spring fingers passing upwardly through the elongated aperture 62 in said greater;

e o l w lh ubp rlsi riefe ma a in posite ends ofthe faidfa l erture 52. practice th slat su i j ldd ste fine e lll'ql the loop with,'as seen lung. '7, the loop leg L53 on one side thereof. and lo'opleg odonthe other. The operation of the cli'pj2 is believed obvious in preventing lateral shifting of the tape assemblies since, as noted above, the raising and lowering cord by engaging the ladder step or slat support 36 prevents this shifting in one direction and the clip base or bend 55 engages the said slat support or ladderv step to prevent this shitting in the other direction. It should b'e noted that the aperture 621s provided ineachslat andin the tilt bar in alignment with one another for passage therethrough of the raisingand lowering cord 39. Actually there are two suohaperturos 62 in" each slat and tilt b ar one near eache rid, through each of which passes a raising and low:- ering cord, one of Jwh'ich cords is" indicated 'by the reference numeral 39 whilethe other is indicated by the reference numeral 63;

Theraisingandloweringcords 39 and 53 may be separate cords but generally are merely the ends of a continuous cord which extends to the inside surface of the Venetian blind and are joined as at 5E in Fig. 1. In the past the said raising and lowering cord passed through a socalled cord lock which looks the cord against movement for thereby locking the slats in adjusted positions, in reality, looking or fixing the height of the bottom rail 33 above the bottom of the opening with which the venetian blind is' used. The said raising andloweringoordsalso are utilized for causing all of the slats to be superimposed directly'on one another atthe upper end of the opening and occupy a position immediately below the tilt bar 24. In the past the said raising and lowering cords passed upwardly through the cord lock into'fa channel along the upper surface of the head rail in jandthen passed through suitable apertures in said head rail to be threaded through the slat apertures 62. l I n order to change the said raisingandlowering cords and wheninitially assembling a Venetian blind the parts wereremovedfrom the opening and the cords thre'aded through the lock and the various apertures, an operation quite tedious and time consuming. By the present invention the cords are not threadedthrough the cordlock nor through apertures in the headrail and the said cord may be'replaced without removing the head rail from theopenlng'and can be accomplished by unskilled labor a minimum of time and with a minimum of effort.

The improved c'ord lock of the present inven tion and indicated ingeneral hy thereference Character as is substantially a tnbular n 1ember rectangular in cross section and comprising; a back at. sides e1 amass ands doubts. The back 66 is extendedand turned at an angle therew provide a mome fle el ihrpu hw iph screws ll pass forsecuring the cord look t'o the ar c x f .th fieedia 2- .T ieimper end of the housing front 5 9 i s spacedbelowthe under surface of the headrail thereby providing an opening 12 betweenjthe under suriac e of the head rail andtop or the cord lock. Within the housing and rotatably: mounted on ashaft 13 isa double grooved pulley one grooveof yrhich receives the raising and lowering cord 3 9gwl' ile the other receives the raising and lowlering' cord t3. Below v the pulle .114 andniounted ona pivot pin 15' is the locking dog 16 wh'ioh has serrated to provide teeth 11 that coorieratewltt ree end and lowering cords and housing side.

known if it is desired to subsequently adjust the restores 3'9 am-ssmlocking them relative to theijhousins.

' The housing fronttil and right hand side 61 (as seen inflig. 8-) is each provided with a cutout whioh' asseen in Figs. 8 and '9 has a vertically disposed path 78 followed by an upwardly outwardly inclining portion 79. The path of the opening continues in the housing side 6'! by an upwardly' outwardly inclining portion 80 and a final directly vertlcally disposed portion 81. In other wordsthis opening 18-81 is continuous through the; housing front 69 andhousing side S'Ithrough which the raising and lowering cords gd' andta may be inserted into the housing. From this it follows that the said raising and lowering cords need not be threaded upwardly through the locking mechanism housing but can be placed therein through the said opening 53-8: and this oan be accomplished while the head rail is securely mounted in position the opening with which the blind is to be employed or the said raising and lowering cords can be arranged with respect toithe cord look while the head rail is liying on its side on a Work bench or the like.

seen in Fig. tithe locking dog it crosses the housing opening to thereby prevent the passing therethrough of the saidraising and lowering cords, the locking dog is retained in this position by a removable pint: against which it is resting as illustrated in Fig. 8. Removal of the pin8 2 will permit the locking dog to fall by gravity to the position illustrated in phantom lines at 83 in Fig. 10 thereby completely uncovering the housing opening and permitting the insertion of the cord as above described. After the cord has been disposed within the housing the said pin 82 is returned to the position illustrated in Figs. 8 and 9 thereby positioning the locking dog is to prevent inadvertent displacement of the cord through the housing opening i88l and at the same time positioning the locking dog 5 to engage the raising and lowering cords to lock them in operative position. It is believed the operation of the cord looking mechanism for locking the cords is well hn'ownhowever the said cords travel upwardly, as viewed inFigs. 8, 9 and ii), for lowering the Venetian blind and when the bottom rail has reachedthe desired elevation the said cords are aotuated to the left as seen in Fig. 8 thereby causing a frictional engagement of the said cords and the locking dog teeth ll whereupon the locking dogrnoves with the raisin and lowering cords to be actuated from the position shown in Fig. S to the solid line position 8d of Fig. 10 which impinges the cords between itself and the housing side 61'. 'I t willhe appreciated that force on said ropes in a direction to cause an upward, movement thereof will only more tightly jam the locking dog raising As is well Venetian blind it is only necessary to exert a downward pull on the cords as seen in Fig. 8 which will release the dog Edand permit it to fall by gravity to the position illustrated in Fig. 8 whereupon the blind may beeither raised or lowered and subsequently locked in its adjusted position foragain merely engagin the cord lock teeth Ti with the raising and lowering cords.

In order to prevent'loss of the pin 82 it may be attached to the cord look 65 as by a flexible attaohing member .82 which has oneend secured to the pin 82 and the other end secured to the cord lockhousing.

Thesaidraising and lowering cords after pass.-

i'ngthrough the cordlock e5 extend to a pulley mechanism indicated in general by the reference numeral 85. This pulley mechanism 85 comprises a U-shaped bracket having a front 86, a back 81 and a bottom 88. The bottom 88 however does not extend completely the length of the front and back 86 and 81 but extend only approximately half way thereby permitting an opening through said bottom to permit the raising and lowerin cord to pass therethrough. The bracket back 8'! has at its upper end, at an angle thereto, a flange 89 through which passes screws 90 for securing the pulley mechanism to the under side of the head rail 25. The bracket front 86 is of less height than the back 81 and is therefore spaced below the under surface of the head rail 20 thereby providing an opening 9| through which the cords pass to be disposed interiorly of the pulley mechanism. Within the pulley housing is a double grooved pulley 92 rotatably mounted on a pivot pin 93 extending between the said bracket front and back 96 and 81.

The pulley 92 receives in one of its grooves the raising and lowering cord 39 and in its other groove the raising and lowering cord 63 and which latter cord is illustrated as depending from the bracket mechanism 85 to and through the tilt bar, individual slats and bottom rail to which it is secured as will later be made clear.

The raising and lowering cord 39 passes beyond the pulley mechanism 85 to a second pulley mechanism indicated in general by the reference numeral 94. This pulley mechanism 94 is substantially identical with the pulley mechanism 95 and its description above is deemed to suflice. It should be noted however that the pulley mechanism 94 has an opening 95 between the upper end of its bracket front and the under surface of the head rail 20 which is substantially identical with the opening 9| between the upper end of pulley mechanism front 86 and the under surface of the head rail 20.

As was noted above, in the past, the tilt bars 24 were provided with elongated apertures through which the raising and lowering cords passed. By the present invention the said tilt bar 24 is provided with a notch or slot 96 which extends through one side of the tilt bar, there being a separate notch for each of the raising and lowering cords. This construction is particularly advantageous when replacing the improved ladder tapes of this invention and that disclosed in the above identified application Serial No. 667,870.

The lower ends of the raising and lowering

cords

39 and 63 may be secured to the bottom rail 33 in any suitable or desirable manner, for example, as shown in the drawings, particularly Fig. 20, the said bottom rail is provided with an aperture 9! through which the cord passes having its free end formed as or tied into a knot 98 to enage a shoulder 99 intermediate the ends of the aperture.

The means for securing the tilt bar to the head rail, as noted above, is at one end by means of the tilting mechanism bracket 25 and at the other end by depending member 26. This depending member 26, as shown in Figs. 8 and 12, comprises an extension I09 of the locking mechanism housing side 68. The said extension having formed therein a bayonet slot receiving the pivot pin 02 from the tilt bar 24. The pivot pin I02 is locked in its slot |ll| by a latch member I03 pivoted at I04 to the bracket extension When it is desired to replace the raising and lowering

cords

39 and 63 the Venetian blind is actuated to its uppermost position whereupon the slots are in superimposed contacting relation to one another. The ends of the

ladder tape sections

34 and 35 are then released from their brackets 40 by feeding the metal ends or clips 46 thereof through the

slots

44 and 45. The raising and lowering cords are then released from the cord lock whereupon the Venetian blind slats and their ladder tape assemblies 3| and 32 now collapsed are lowered as a unit to the bottom of the opening frame 2| to rest on the sill I05 thereof. The lower ends of the

tape members

34 and 35 are released from the bottom rail 33 thereby exposing the cord knots 98. Opening of said knots will permit the raising and lowering cord ends to be drawn through the aligned apertures 62 of the slats. The said slats ar retained in their collapsed position which presents a relatively short opening through which the ends of the new cords may be inserted which upon being inserted through the apertures 91 in the bottom rail 33 are knotted and drawn back against the aperture shoulders 99. The ends 49 and 50 of the

tape lengths

34 and 35 are then retacked to the bottom rail 33 over the apertures 9! therein. The said raising and lowering cord 39 is then passed through the opening of pulley mechanism 94 and the

cords

39 and 63 are then inserted through the opening 9| of pulley mechanism 85 whereupon the said cords are passed through the opening '|88| of the cord lock mechanism 65. It is understood, of course, that the old raising and lowering cords were removed after their knots 99 were opened and that the movable pin 82 of the cord lock mechanism had been removed to permit the locking dog 16 to take the position illustrated at 83 in Fig. 10. After the new raising and lowering cord has been positioned within the cord lock the locking dog 16 is actuated to the position illustrated in Fig. 8 and the pin 82 replaced.

The Venetian blind slats along with the bottom rail may now be raised from the sill I05 to the upper end of the frame 2| and locked in this position whereupon the

tape lengths

34 and 35 of each tape assembly 3| and 32 secured to its bracket 40 by having its metal tip or clip 46 passed through the

elongated apertures

44 and 45. The Venetian blind is now ready for normal operation.

If it were desired to replace the tape assemblies 3| and 32 along with the replacement of the raising and lowering

cords

39 and 63 or if it were desired to retain the old raising and lowering cords but merely replace the tape assemblies the same procedure would be gone through with except that, in the case of merely replacing the tape assemblies 3| and 32, the cord knots 98 would not be disturbed.

If it were desired to replace the old style tape assemblies wherein the slat supports 0r ladder steps are alternately on opposite sides of its raising and lowering cord the procedure outlined in the above indicated co-pending application 667,870 would be followed, namely, a bracket 49 would be placed on the upper surface of the tilt bar near one end thereof with the arms projecting toward the cord of the tape assembly being replaced. This bracket would previously have had secured thereto one of the

tape lengths

34 or 35 preferably that tape length on the opposite side of the Venetian blind from which the operator is working. The slat supports or ladder steps are placed each beneath its slat for the entire length of the Venetian blind whereupon the remaining tape length is secured to the bracket :10. The ladder steps or slat supports of the old tape assembly is noW out from one of its tape lengths and removed from the Venetian blind. It is of course understood that the bottom rail remains in position due to its connection with the raising and lowering cords through the knot 97 or other connecting medium. The bracket is now shifted to the position illustrated in Fig. 3 namely with its raising and lowering cord between its

arms

42 and 43. At this point it should be noted that with a tilt bar having a notch or slot therein such as illustrated in Figs. 3 and 4 the opening thereof is closed by the arm 02 or 03 of the bracket which crosses it. With the bracket 40 in the desired position it is secured by screws 08. The lower ends 49 and 50 are now fastened to the under surface of the bottom rail 33 by tacks or the like.

The second tape assembly is now placed on the Venetian blind in the same manner as just described whereupon the Venetian blind is ready for a normal operation.

From the foregoing it will be appreciated that there has been provided a. Venetian blind in which the raising and lowering cords can be replaced with a minimum of time and effort and without removing the blind or any part thereof from the opening with which it is being used. It will also be noted that the ladder tape assemblies BI and 32 can likewise be replaced, on the job, by the average householder or utility person without the use of expert services. By the same token it should be noted that a considerable time saving is effected in the manufacture and assembly of Venetian blinds at the factory in that the heretofore time consuming operation of threading flexible raising and lowering cords through restricted apertures, cord lock housing, head rail channel slot, head rail outlet apertures and tilt bar apertures is eliminated to say nothing of threading the cord through the individual slat apertures.

In Figs. 15, 16 and 17 a slightly modified construction is illustrated which however will accomplish the same purpose. This construction consists of letting into the under side of the head rail 20 a groove or channel I06 through which the raising and lowering cords operate. The cord lock is identical with that above described except that it is placed nearer the under surface of the head rail 20 and at the same time the head rail 20 is provided from its inside face to the channel slot I06 with a notch or groove I01 thereby providing between its upper surface and the top of the locking mechanism front wall 69 an opening I08 whereby the cords may b inserted into the channel groove I06. Instead of utilizing

pulley mechanisms

85 and 94 use is here made of removable pulleys I09 and H0 which are held in the channel groove I06 by removable pins III and H2.

The use of this modified mechanism is identical with that above described since the cord 39 would be placed around the pulley H0 after having been inserted through the individual slats and attached to the bottom rail 33 and the said pulley H0 pushed into the channel groove I06 and the pin H2 then pushed home. The said raising and lowering cord 39 along with the raising and lowering cord 93 would then both be placed around the pulley I09 and it inserted into the channel groove I06 and its removable pin. I09 pushed home to retain it in position. The said

cords

39 and 63 would then be arranged within the locking mechanism 65.

If desired pulley mechanisms such as illustrated in Fig. 18 and indicated in general by the reference numeral [l3 may be employed instead of the pulleys I09 and II 0. This pulley mechanism H3 consists of a U-shaped bracket having a base H4 and depending arms H5 and II 0 through which passes a removable pin II? for securing the double grooved pulley I8 in position. The pulley mechanism H3 would be secured in position against the under side of an ungrooved head rail 20 by means of screws I I9. The said pulley mechanisms H3 would be employed with a cord lock mechanism 65 mounted against the under surface of the head rail 20 in substantially the same manner as illustrated in Figs. 8 and 9.

From the foregoing it is believed now obvious that there has been provided a mechanism which will accomplish the objects initially set forth.

What is claimed is:

1. A cord guiding means for a Venetian blind comprising a head rail, a pulley mounting means secured to the under side of the head rail comprising a U-shaped bracket having one of its arms spaced from the head rail for permitting the placement of a raising or lowering cord into the bracket and over the pulley, and a second bracket adjacent one end of the head rail comprising a tubular casing with the pulley therein, and a slot in the casing through which slot a cord may be positioned in locating the cord in the casing and about the pulley without threading the end of the cord through the casing.

2. A cord guiding means as in claim 1 wherein a locking device is rockably mounted in said casing.

3. A cord guiding means as in claim 1 wherein a locking device is rockably mounted in said casing comprising a jaw and a spring urging said jaw toward one side of the casing to clamp the cord between the jaw and the casing.

CHARLES ADLER.

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

UNITED STATES PATENTS Number Name Date 1,865,935 Marshall et a1. July 5, 1932 2,054,241 Burns Sept. 15, 1936 2,057,608 Carroll Oct. 13, 1936 2,123,817 Warren July 12, 1938 2,166,301 Konen July 18, 1939 2,290,634 Clark July 21, 1942 2,334,132 Sherwood Nov. 9, 1943 2,376,990 Wright May 29, 1945