US601612A - Webstee davis - Google Patents

Description

(No Model.) 2 sheets sheet 1. P. W. BRUNDIN.

VENETIAN BLIND. No. 601,612. Patented Mar.' 29, 1898.

Q; i m l W W I i W! gm g Ii} ,l I INVENTOR: WITNESSES; w w

Attorney.

(No Model.) 2 Sheets-Sheet 2 P. W. BRUNDINQ VENBTIAN BLIND.

No. 601,612. Patented Mar 29,1898.

- INVENTOR:

WITNESSES:

Attorney.

UNITED STATES" PATENT PER WVALFRID BRUNDIN, OF NEW YORK, N. Y., ASSIGNOR TO THE NEW YORK VENETIAN BLIND COMPANY, OF SAME PLACE. v

VENETIA N BLIND.

SPECIFICATION forming part of Letters Patent No. 601,612, dated March 29, 1898. Application filed December 28, 1896. Serial No. 617,198. (No model.)

To all whmn it may concern.-

Be it known that 1, PER WALFRID BRUN- DIN, a citizen of the United States, and a resident of New York city, in the county and State of New York, have invented certain new and useful Improvements in Venetian Blinds, of which the following is a specification.

My invention consists of improvements in the construction of some of the parts of Venetian blind apparatus whereby it is designed to provide simpler and more efficient apparatus for operating and controlling the blinds, as hereinafter described, reference being made to the accompanying drawings, in which- Figure 1 is a front elevation of parts of a Venetian blind constructed according to my invention, with a part in section; Fig. 2, an elevation in a view at right angles to that of Fig. 1, also with a part in section. Fig. 3 is an elevation in a view in the opposite direction of that of Fig. 2. Fig. 4 is a detail, partly in front elevation and partly in longitudinal section, of the roller; and Fig. 5 is an end view of the roller, side view of a pawl for looking it, and a section of a pawl for controlling the action of the locking-pawl. Fig. 6 is a detail, partly in front elevation andpartly in section, showing a modified construction of apparatus for insuring release of the roller-holding pawls for letting the blind down. Fig. 7 is a section of Fig. 6 on line 2 2.

The slats a are suspended from a rockerbar I) by the straps c, as usual, but the rocker is pivoted at e, concentrically in the hangers 61 instead of eccentrically, and a coiled spring f is arranged in the rocker and in connection with the non-rotatable pivot-rod g for normally turning the rocker to close the slats, as represented in Fig. 1, but the use of the spring is alike applicable with the eccentrically-ar ranged rocker depending on the gravitating action of the heavy side for closing the slats which is sometimes employed.

The rocker bis provided at one end with a crank it for opening the slats, as represented in Fig. 2, by means of a cord 7 the crank being arranged at such an angle that by pulling the cord downward and fastening it on a stud, button, clasp, or other fastener in a suitable position, or being held by a counterbalance-weight, as y, the slats Will be held open. Instead of arranging this pull-cord i to hang directly from the end of the crank and subjecting the operator to the labor of contracting the spring by direct action I have connected it by a pulley-block j, connected by cord j to the crank, with the pullcord 11 connected to ahook k at the top of the window-frame and passed through said block, and a guide 1 also at the top of the windowframe, whereby the operation is made easier, as will be well understood.

The usual roller m, slat-raising cord 71, and pull-cord o are employed for raising the slats, as shown in Fig. 2. Also one or more ratchet-notches p in the stationary pivot-hub q and pawls s on the end of the roller are employed for locking the roller and holding up the slats.

To facilitate the release of the locking-pawl when it is desirable to let the slats down it is customary to first pull the roller by a jerk on the cork 0 in the reverse direction to thrust out the pawl, so that when the pull on the cork 0 is released the pawl will escape the notch and the slats will descend. It will be seen that to insure this operation when the slats are raised to the uppermost limit there must always be some slack space above the position in which the uppermost slat comes to rest when the pawl locks the roller, for if the locking should occur coincidently with the contact of the upper slat with the rockerbar the roller could not respond to the jerk for throwing out the pawl. I have therefore provided means for insuring such slack which, as represented in Figs. 1, 2, 3, and 4, may consist of the weighted pass-over pawl t on the pivot 11. and in such relation to the notch 19 that it will lodge therein, so that the pawls s will pass over it and a predetermined distance beyond the shoulder of the notch when the slats are being raised and then drop into the notch above said passover pawl and will thrust it out of the notch and return to the shoulder of the notch for locking, thus insuring the requisite slack for enabling the locking-pawl to be jerked out of the notch.

Although the length of the cords 11 may be so adjusted relatively to the pawls s on the roller and the pawl-engaging notch that such slack may be provided for at first-,the cords;

. y ivairys i j nsth y hy r s pic a t n 7 V and other causes thattherewould be times when thereleasing of the roller would; be difif;

v cult ithout this provision.

The passoyerpawjlmay be constructed invarious different Ways provided it will lodge :in' the notch, so that pawls s will pass over it,and. it will be displaced properly for locking theroller, as represented. in Figs; 1 to 5,

Q V j inclusive. 7 It is provided with a stop 17, which hhhbxtending down along the bracket d, in

. Whichtherollerjmand the rocker-bar are piv-- .Vijded therefor in the; pivot-holes e, arm a: wil-lbe elevated, so: that a pawl fs, that wonld 'WllihOllt said arm engage thenotch p with ini snfliciehgt slack :for release, iwill'be' prevented bears against 7 the operative end up too'highflnFigs: Sand 7 thispass-over pawlfis represented as an'arm a of a. rod 1),

resting in the notch 19' of the hubq, said rodoted and Connected to the pivot d of the rooker-barin such manner that 7 said rocker bar being lifted by the slats when :pullednptightly against it, suitable slack being profrom: engaging atall, whereby the slats will Qjdrop cajusing thea'rm'to drop also,'and the .nextpawl will drop-in the notch and lock the} roller, thnsinaintaining ample slack for rer lease; 7 Other contriyances: may also be anf'ranged for this-purpose, and I do: not limit 1 nyfself to any particular device therefor.

I claim-- V 1. (In. ja Vejnetiajn. blind; the: combination r with the slats, slat-suspending straps, and

the slat-raising roller, of the slat opening and closing rocker-bar and a spring for actuating said rocker-bar for closing the slats, said rocker having the pull-cord for opening the slats substantially as described.

2. In a Venetian blind, the combination with the slats, slat-suspending straps, and the slat-raising roller, of the slat opening andslat-raising roller, of the slat opening and V thehracket to prevent the :'Weight from thrusting by th o k -tweet r closing rocker-bar; spring for actuating the V i Y .rockerbarto close the slats,pu1l-cord for ac tuating therocker-bar to open the slats, and V V a connterbalanceweight tohold the slats open substantially as described;

- 5-.-The combination with the'sl'at-raising roller, locking-pawlsj and notched hub, of a pass-over pawl adapted to lodge in the lock:

' ing notch and prevent the locking pawls from i V locking'the roller without 'slack'for jerking the pawls free substantially as described.

; r The; combination with the slat-raising $0 1611, locking-{ arvis and} notched hub, ;of'a.

pass-over pawl adapted to lodge in the lockrollersubstantially as described.

'ing-notchandprevent the'locking-pawls from V V 7 locking the roller Without slack for jerking I the pawls free, and means fordisplaeing said l =pass-overpawl preparatory to locking the" The combination with the slat raising roller-,locking-pawls and notched hub, of a i r gravitating pass-over pawl adapted to lodge :inthe locking-notch and preVcntthclockingj i j j Zpaw'ls from'lockingthe.'roller'withont'slacle i f iorjerking'the pawlsfree,and'tobedisplaced L. V f

' ratory'tolocking the roller substantially-as described-j I r 8.1m a Venetian blind,ithe'combination with the sl ats andfslatsnspe'ndifn straps, 'of a V i i V slatopening and closing rockei bar, and

spring for closing the slats, said; rocker having a pull-cord-for opening the slats substan-' tially as described.

9; In a Venetian. blind, the combination withthe.slats,slat-suspending:strape,;slat i opening and closing rocker-bar,and the spring for closing the slats of the pulley-block and 9 pull-cord to open the slats, substantially as described.

10. In a Venetian blind, the combination with the slats, slat-suspending straps, slat opening and closing rocker-banand the spring for closing the slats, of the crank attached to the rocker-bar, pulley-block connected to the crank, and the pull-cord connected to a hook attached to the Window-frameabove the crankarm and passed through said block, and through a guide-eye also attached to the Window-frame above the crank-arm all substantially as described.

Signed at New York city, State of New York, this 17th A. D. 1896.

in the county and day of December,

PER VVALFRID BRUNDIN.

Witnesses:

W. J. MORGAN, A. P. THAYER.

It is hereby certified that in Letters Patent No. 601,612, granted March 29, 1898, upon the application of Per Walfred Brundin, of New York, N. Y. for an improvement in Venetian Blinds, errors appear in the printed specification requiring correction, as follows: On page 1, lines 74 and 76, the word cork should read cord; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed, countersigned, and sealed this 5th day of April, A.'D., 1898.

[SEAL.] WEBSTER DAVIS,

Assistant Secretary of the Interior. Countersigned O. H. DU'ELL,

Commissioner of Patents.

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