US1059257A - Window-curtain-operating mechanism. - Google Patents

Description

F. W. ADLOF. WINDOW CURTAIN OPERATING MECHANISM.

APPLICATION FILED MAY 2, 1911.

ATTORNEYS IIVVENTOR vc'erlbh Wmlof Patented Apr. 15, 1913.

6 SHEBTS-SHBET 1.

WITNESSES.

F. W.ADLOF. WINDOW CURTAIN OPERATING MECHANISM.

APPLICATION FILED MAY 2, 1911.

Patented Apr. 15, 1913.

6 SHEETS-SHEET 2.

m m N n w ATTORNEYS cuLumum PLANOGRAI'II CU.,WASIHN(iTON. u. C;

P. W. ADLOF.

WINDOW CURTAIN OPERATING MECHANISM.

APPLICATION FILED MAY 2, 1911.

Patented Apr. 15, 1913.

6 8KEETS-BHBBT 3.

INVENTOI? Fr & E MM M .II. w

ATTORNEYS F. W. ADLOF.

WINDOW GURTAIN OPERATING MECHANISM.

APPLICATION FILED MAY 2, 1911.

6 SHEETS-SHEBT 4.

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filllllll WITNESSES:

IV VE N T 0/? 744311 62501" I-l COLUMBIA PLANOGRM'H CO.,WASIIINGTON. 04 C F. W. ADLOF. WINDOW CURTAIN OPERATING MECHANISM.

APPLICATION TILED MAY 2, 1011.

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F. W. ADLOF. WINDOW CURTAIN OPERATING MECHANISM. APPLICATION IILED MAY 2, 1911.

1,059,257, Patented Apr. 15, 1913.

8 SHEETS-SHEET 6.

A TTOR/VEYS coummA PLANOORAPN C0..WASmNnTON, ulc.

' UNITED STATES PATENT OFFICE.

FREDERICK 1W. ADLOF, OF NEW. KENSINGTON, PENNSYLVANIA.

WINDOW-CURTAIN-OPERATING MECHANISM.

Specification of Letters Patent. Application filed May 2, 1911. Serial No. 624,539.

To all whom it may concern Be it known that I, FREDERIGKW. ApLoF, a citizen of the United States, and a resident of New Kensington, in the countyofnWestr moreland and State ofPennsylvania, have invented a new and IHIPITOVGdVlIlClOWCLlIr rain-Operating Mechanism, of which the following is a full, clear, and exact description. 1

Among the principal objects which the present invention has in ivieware to provicle means for operating a window curtain which is positive and independent of springs or other devices subject to disorganization; to provide a mechanism for adjusting a curtain theoperation whereof is simplifiedand accelerated; and toprovide a mechanism of the character mentioned adapted; for operation to lift the curtain from the sill of the window upward. a

With these objects in view. the invent on consists in producing a winding mechanism manually operable to rotate the curtain roller.

It further consists informing a mecha nism of the character mentioned havingincorporated therein a balancing spring and holdingbrake, the operation of which per.- mits the accurate adjustment of the window curtain.

It further consists in constructing a casing for a winding mechanismof the character named affording easyand ready access to the mechanism within said casing.

One embodiment of the present invention is disclosed in thelstructure illustrated in the accompanyin drawings, in which like characters of re erence denote corresponding parts in all the views, and in which" Figure 1 is a front elevation of a window having applied thereto a curtain and operating mechanism therefor l constructed and arranged in accordance withthe present invention; Fig. 2.is a samilar view showing the curtain adjusted at the sill to operate toward the head of the window; Fig. 3 is a on the line 6-6 in Fig. 4.; Fi 7 is a similar.

Patented Apr.15,1913.1

nism; Fig. 14: isa detail view showing the driving shaft of the operating mechanism, F 1g. 15 1s. a detail view in vertical cross sec: 1 tion of one of the operating rods for controla ling the operating mechanism; Fig. 16 is. a view showing the window curtain operating mechanism in conjunction with a window curtain of ordinary construction, the spring actuated roller thereof being shown in section; Fig. 17 is a detail view on an;enlarged scale, showing the method ofconnecting the curtain roller or ordinary construc: tion to theoperatingmechanism herein disclosed; Fig. 18 is a vertical longitudinal section taken on the line 1818 in Fig. .19; Fig. 19 is a vertical cross section taken on:the line 19-19 in Fig. .18; Fig. 20 is a vertical longitudinal section taken on the line 20--20 in Fig. 21:; and Fig. 21 is a vertical cross section taken on the line 21-21 in Fig.20. As shown in the accompanying drawings, and in Figs. 1 and 2 thereof, the containing case 26 is mounted upon the window frame and upon the head thereof. In F ig.. 1 ithe. case is shown as directly connected withthe curtain roller 27 upon which the curtain28 1 is rolled. InFig. 2 thecurtain roller 27; is adjusted. in suitable bearings adjacent the sill of the window, and the curtain 28 is connected I with the operating mechanism contained in the case 26 by means of cords 29. In both installations the operating. mechanism contained in the case 26 is actuated jbythe pull cords 30, to manipulate. which there are provided the rods 31. The rods 31 are connected with the cords 30 by means of pocket sockets 32. The socket 32 is best seenin Fig.15 of the drawings. The lower section of the socket is constructed from a short tube the end whereof is tapped toform a screw thread thereon, one of said threads being thread engaged with the head 33 of the rod 31. The other end of the short tube is thread on agedwith a plug 34. The plug 34 isprovi ed with a central perform tionfor the passage of the cord 30, a knot 35being formed in the said cord afterthe same has passed through the perforation: in the plug;34=. To cushion th'eblo'w of the sockets: 32iagainst the case 26there are pro l cords 30.

videdthimbles 36, at the upper end whereof are formed extended flanges 37. The thimbles 36 are guided byfshort tubular sections 38, which sections 38 are thread engaged with the plug 34." Interposed betweenthe flange 37 of the thimble 86 and the end of the tubular. section 38 is .a spiral spring 39.

7 It willbe understood that' there is a socket 32 and thimble 36, with the parts above described therewith, mounted on each of the In both forms of installation shownin Figs. 1 and 2 the rotation'of the curtain roller 27 is accomplished by operatively conheating the same with a driving gear wheel 40. The, wheel 40 is fixedly mounted upon;

a shaft 41 upon which is also mounted the double sectioned winding spool 42. The

spool 42 is equally divided by a flange 43,

forming thereby on the said spool adjacent winding compartmentsfor the two cords 80. The cords 30, 30, it will be understood are Wound upon the spool 42 in opposite directions so that the pull exerted on one of the cords 30 will rotate the spool 42 and shaft 41 connected therewith in one direction,

curtain roller 27 in such manner as to rotate'thesaid roller inunison-with the said shaft. V

- I In'the form of installation shown in Fig. 2.of the drawings, the shaft 45 is substituted by the shaft 46, upon which shaftis f fixedly mounted a two-sectioned winding spool 47; The spool 47 is'divid'ed into two compartments by a central flange 48, as seen best'in Fig.,l8 of the drawings; When opcrating the construction shown in Fig.,18j the sp'ool 42 is rotated by manipulating the same through the cords 30, an'd the shaft 46 and spool 47 are rotated tozwind or unwind as the case may be, the hanging cords 29.

The ratio of the diameters of the wheel 40':

and the pinion'44 maybe varied to 'suit the operating conditionsdesirablefor the curtain; Wh'en operating the curtain 28 from the sill of the window, and employing the cords'29, the same are guided by two pulleys 49and 50, whichspulleyshave different dimensions.

guided by each pulley to'feed upon the spool amend into the opposite winding sections provided thereon! The cords 29, 29 are supported on the head of the window frame by means of guide pu'lleys'51. 8

the formof .'nstallation sho inFig,

, g The difference in diameter of the. pulleys-49 and 50is such that the cord 29 is to 1 the slack of the curtain istaken up by the weight of the same and the rod usually mounted in the looped end 52 of the curtain. In the form shown-in Fig. 2 the looped end 52 being inverted the installation necessitates the employment of some special device for taking up the slack in thecurtain, The

mechanism employed by me for this purpose a is best shown in Figs. 20*and 21'. Thecurtain roller 27 is there shown as carrying the" shaft, 45. The shaft 45 in this form ofthe installation has fixedly attachedithereon' a bevel pinion 53. The pinion 53 is meshed with a matched bevel gear wheel 54 whichlis suitably mounted in bearings formedin the casing 55. z The casing 55, asv seen in Fig. 2'

of the drawings, is rigidly mounted on one of the vertical rails of thewindow frame. The trunnion 56 mounted in the opposite end of the roller 27 has abearing .57 ;pro-

vided therefor on the-vertical rail of; .the 7 frame at the opposite'side of:the window. I

The roller 27 and bevel pinionv53 connected therewith are normally rotated to wind the I 9'0 roller 27 by the bevel gear wheel 54 and the spiral spring 58 operatively connectedthere-' wit-h and mounted in the 'casing'. The

fixed end of the spring 58 is anchored in a post 59 set out from the. base 60 of the 'casing55. This construction is best seeniin Fig. 21 ofthe drawings. The normal'operation of the spring 58 is to rotate the shaft- 61 gear 54, pinion 53-and 'roller27 con-I nected therewith, The rotation of the'roller 27 is only prevented bythecords 29,, 29 by which the curtain .28 is suspended It will be understood that whenever the cords 29.,

29 are slacked the spring .58 and tra'nsrnisv sion mechanism a connected therewith operate to rotate the roller 27 and gather there: on-the curtain 28. Against the strain-of the spring 58 in the one case, and the weight of. the curtain'in the other case,-the shaft 41 is held from rotation by a brake fixedly connected to, rotate with; the, shaft .41. The

brake referred to is mounted inthecase 26 and in a chamber thereof s'eparated from that containing the spool 42' by a partition 6 1. The partition- 61 is provided with an Q enlarged opening concentric [with theshaft 41, the edge of the opening, being provided with a screw thread "to 'support the brake box 62. The box 62isheldfixedly in the a partition 61","and is centrally boredgto form M a bearing ;for the shaft 41,1as is best seen in-1 Fig. 4 of the drawings. Thev box 62 con- 1 ,tains the various members "forming .the brake employed in the present invention, and is closed by a cover 63. The cove'r63is fixedly mounted on theshaft 41, the section 72 thereof being flattened toextend through the saidcover to key the sameon the said shaft. The flattened portion 72 of theshaft 41 is also extendedthrough, a disk, 71, an

elliptical perforation 73] being provided'i therefor. Uponthe disk 71 are raised bosses 74. The bosses 74:; have 1formed therein threaded holes 75 tobe *engagedfl by the ings. i As there seen, the shoe is provided. with a central recess 77, the straight sides whereof form a guidefor the movement of I the brake blocks 69 when the same are deposited in the recesses 7 7 The brake blocki 69 and the brake shoe 70 are shaped to, re-

ceive the leaf springs 78. The springs 78 are I shapedas shownin Fig. '13, having aicentral bend 79 which fits within the. recess :80

formed in the block 69. See Fig-.11.. At the 1 outer end ofthespringsare formedthe curled pivot portions 81. Theipivot portions 81 are adapted :to rest in; the pivot; seats 82 formed at the end of theislots 83 in each shoe 70. Each of theibrake shoes 70 and blocks 69 connected therewith is mountedupon a disk;71,.the bosses 74 extending between the bowed extensions of the springs 78. In this position the plates 84 extend into the narrow channel 85 formed between: the

bowed extensionsofeach of the springs, as

seen best in Figs. 6 and 13 of the drawings. The pressure exerted outwardly by the springs 78 upon the shoes-70 is regulatedby means of the wedge blocks. 66, which are manipulated by means of the screws 64 .to become jammed between theblocks 691and the shoes 7 0. To this end the blocks 66 are provided with a screw threaded perforation 65 and an inclined surface67. To receive and guide the blocksi66 the. shoes :70 are pro: vided witha recess 86, at the opening whereofis formed two projections 87which1extend within the grooves ,88 formed in. the opposite sides of the blocks 66.; The blocks 69 are for the same purpose, to wit,.to form a guide for the blocks 66 provided with the recess 68, shown best in dotted lines in: Fig:

11 of the drawings.

It will be noted that the recess 80is pro-.

vided with a slightly flattened side 89, which when the block 69 is moved toward the center. of the disk 71 compresses and flattens the bent portion 79 of ;the spring 78. The bendedportion 79 beingincased within the recess 80 forms a seated, spring. When the wedge block 66 is drawnytoward the cover 63 in the first partiof the operation. the bowedextensions of the'spring yield, bend.- ing from the flared ends of. the bosses 74,

as shown best in Fig. .6 of the drawings.

When the extent of the action of'the bowed extensions of the spring has been reached the flattened surface 89 of :the block 69 is forced againstthe bended portion 79 of the spring. and compresses the said bended portion. It will be noted that by means of this arrangement a spring cushion is formed.

for the shoes 70. The tension of the pressure of the shoes 70 against the side of the brake 100x62 is varied at will. To vary the said tension the screws 64: are manipulated to draw the blocks 66 toward the cover 63 or extend the same away therefrom. It will be understood that whenthe tension'is once set it so remains until the screws 64 are again manually manipulated.

It is to counterbalance the weight of the curtain 28 in its various extensions that I have provided the 'coiled spring90. The spring 9O is coiled upon a spool 91, the

flanges 192xwhereof form guides for the said spring. The inner end of the spring 901s anchored to a bindingpost93 formedad jacent the center of the. hub of the spool 91;.

The outer-end of the spring is held in .a binding post 94 extended from the side of the case 26. The cover 95 is screw threaded to engage thescrew threads formed in the annular flange .96 extended from the side of the case 26. The spool 91 with spring 90,

is inserted over the section 72 ofjthe said shat'txto counterbalance the rotam effect thereon of the curtain 28. The :end of the 1 section 97 of the shaft 41 is mounted in the bearing formed in the screw threaded but-.

ton 98. i

The purposeof the cover 95 is to permit.

the. adjustment of the spring to vary the initial tension thereof on the shaft 41. The

cover is unscrewed from its engagement with the flange 96, and the spool 91 1s then exposed formanipulation by the operator.

It will be understood that from time te time the tension of thespring will bethus waried as the same weakensfrom age or from other reasons. The spring 90 isso arranged that as the curtain is extended the spr1ng 1s wound so that as the weight of the curtaln gradually increases in 11ke proport1on the tension of i the spring 1s ll'iCI'GElSQCL. The

spring is selected for. qualities rendering it. acceptable for the purpose of counterbalanc- 1 ing the increasing weight of the curtain.

In Figs. l6iand 17 1s shown the arrange ment whereby is adapted for use, in conjunction with the present operating mechanism,

an automatic roller of the common type. The shaft 99 of the ordinary roller, having the flattened end 100 as seen in Fig. 17 is held between loose chuck jaws 101. The. jaws 101 are provided with a boss 102 adapt-1 1 ed to rest against the ratchet plate 103 of 1 Either of.

the common Hartshorn roller. the shafts 15 01-46, as the case may be, is

A follower-nut 106 is provided whichis 42Ji's rotated to transmit its rotary motion o' 1.- In/combin'ation; a Window curtain; a

dow curtain roller; a transmission mechaflattened end 100.

*c'urtainis as follows; The installation havthe pinion 44: The ratio between the gear a 27, over and above that produced on the' hold "of the brake shoes 70. Whenthecurthe operation of the balancingspring in, t

a for increasing the operative tension of, said a plurality of cables adapted to wind on 1 said drum; to rotate the same ,in'a 'opposite thread engaged with the block 104 so that. when manipulated it is. forced against the collar 105' to move the same overthe jaws 10 1- and to contract the same upon the shafts 46 and 99 and imprison th'erebet'ween the With an operating mechanism constructed. and arranged as shown in the accompanying drawings and as above described the oper ating for raising and lowering the Window ing been niadeeithe'r as shown in Fig. 1 or as shown in Fig. 2, one ofthe rods 31'is grasped, by the operator, theselection being'made with reference to Whether the op- "eration is to raise or lower the curtain. By then pulling upon the" selected rod the spool" to the curtain roller 27 inthemanner above' described through the gear wheel dofilld;

wheel 40 and pinion a l-is such as to accel-i 'eratethe rotary speed produced on'the roller shaft 41'. Therota ti'on of the shaft 41 and parts connected therewith is against the;

taiii has been properly adjusted the grip of the shoe 0 on the box 62 is sufiic ient to hold the -shaft 41 from further rotation. This action of the brake shoes 70 is assisted by Y the manner as above set forth. While; I have herein: described a certain form of mechanism for effecting, the 'purposes set forth, it'will be understood that I am not confined to the details of structure of the parts thereof nor to the particular assembl'age described; y a

Having thus described my invention, jg what I claim as new and desire to se'curebyt Letters Patent is; a

roller'for said curtain, a rotary dru1'n;;a driving shaft fixedly mounted on said: drum;

connecting shaft for engagingjthe winnisin operatively connecting. said shafts; a brake member fixedly mounted onsaid driving shaft-adaptedto hold said driving shaft against the pull of the window curtain; and

directions while being unwound from said drum. a I

2. In combination; a windowc'urtain; a roller provided with' supporting trunnions therefor; .a driving shaft; a transmission mechanism connecting said trunnions; and said driving shaft; a vrotary drum fixedly mounted on said driving shaft; an operating came wound upon said drum in opposite directions; a manually operated mecharii' i fo anir n a d mnd a balaaeing spring mounted on said" driving i duaasv shaft to ta e the weight er said man,

said spring adapted to wind on said shaft as the said curtainisunwo-und on its roller.

3.In combination;a' windoW curtain; a t V roller; a cord driven mechanism for, rehab ing said roller; a holdingbrake' for saidroller adapted to control the rotation thereof; a counter-balancingde'vice for said curtain; and manually controlledmeans for operating said cord driven mechanism.-

roller for said curtain, a cord operated driving mechanism. having a driving shaft; a

winding drum fixedlymounte'djthereon;two

cables Wound on said drum to rotate the same as the said cables are unwoundflfroin alternately in, opposite directions ;a brake havingyil fixed d'riigand fixedlyconnected with said "shaft; a bra-ke'sho'e-fo'r said brake;

and a coiled springanchor'ed' to said'shafti and adapted to bewound thereon inuniSon with the unwinding of the curtain on its roller to counter-balance the increasingrotary strain of 'said cur'tain on said roller.

said drum; manually operatedmeans for a manipulating said cables to rotate salddrumy 5. In combination; in a window curtain; a t

roller for said curtain, a brake having asta-V tionary cylindrical wearing member; a plunot rotary body portion; a stationary cylindri 7 Cal wearing member surrounding and con centric with s'jaid body, ;portion; a"plurality of brake shoes connected'to rotate with said body portion; resilient meansmdunted on member; and means carried by, said brake shoes for varylng' 'the pressureyof said resllient means upon SitlCl brake shoes;

i said "body portion to no-rmally 'thrustsaid brake shoes to I bear against gsaid wearing 7. In a,Window curtain' operating mechanism, a'bra-ke having a rotarybody/portion; a stationary cylindrical wearing Q member infolding said body portionand mounted concentric" therewith; a plurality of curved brake shoes having we'aring suit-faces shaped to thecurve of said wearin member; a plu rality of springs mounted' on said body portion to normally move said, brake shoes toengage said wearingniember; a plurality of a blocks interposed between. said shoes-land said springs to vary the effective tension of said springs upon said shoesrand mean's for r varying v the relative disposition of said blocks'and said's hoes V v 8. Ina window curtain operatingymechai nis'in, a brake having a rotary bod' portion; a'stationary cylindrical wearing f bsr infoldinjg said: body pardon and norms Ubody portion to no1 'mal1y move saidubrake shoes to engage: said %wearingmember; a

plurality of blocks interposed between said shoes and said s rings to vary theeflective tension ofsai springs upon said shoes;

[Wand a plurality of wedge-shapedmembers disposed between said blocks and said shoes to vary the relative disposition of said: blocks and said shoes.

In testimony whereof I have signed my name to this specification in the presence of 1 15 two subscribing witnesses.

FREDERICK W. ADLOF.

Witnesses:

GEO. D. HAUER,: CHAs.:B. Ross.

Copies of this patent maybewbtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. 0.?

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