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Publication numberUS521276 A
Publication typeGrant
Publication dateJun 12, 1894
Filing dateMar 15, 1892
Publication numberUS 521276 A, US 521276A, US-A-521276, US521276 A, US521276A
InventorsSebald Stahl
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sebald stahl
US 521276 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)

' s. STAHL.


No. 521,276. PatentedJun 12, 1894.

n5 NATURAL umoemwuma COMPANY.

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SPECIFICATION forming part of Letters Patent No. 521,276, dated June 12,1894.

Application filed March 15, 1892.

To all whom it may concern.-

Be it known that I, SEBALD STAHL, manufacturer, a subject of the Emperor of Germany, residing at No. 33 Zufuhrstrasse, Nuremberg, in the Kingdom of Bavaria and Empire of Germany, have invented certain new and useful Improvements in Band or Cord Self-Acting Uprollers on Jalousies, of which the following is a specification.

The object of my invention is to provide a new and improved device for automatically wrndmg up the band connected with a curtain, when said curtain is raised.

The invention consistsin the combination, with an ordinary curtain-roller, of a drum nxed on the same, a band or strip fixed to said drum, a spring-drum mounted to turn on a pin projecting from the window-casing, to which spring-drum the lower end of said band is fastened, a ratchet-wheel connected with the spring-drum, a pawl engaging said ratchet-wheel, a chain connected with said pawl and passed over a suitable pulley and provided with a hinged spring handle, all as will be fully described hereinafter and finally pointed out in the claims.

In the accompanying drawings, Figure lis a front view of a window-casing and curtain, provided with my improved device for wind- 1n g up the band attached to a curtain-roller. Fig 2 is an enlarged detail side-view of the spring-drum of the ratchet-wheel, drum and handle. Fig. 3 is a side View of the springdrum, ratchet-wheel and paw], and Fig. 4 is a detail view of the drum,showing the spring, the cover-plate being raised. Fig. 5 is an enlarged vertical longitudinal sectional view through the drum. Fig. 6 is a detail cross sectional view through the spiral spring at the end of the same connected with fixed pins.

Similar letters of reference indicate corresponding parts.

The curtain is secured to a rod b which is mounted to turn in the top of the windowcasing in the usual manner, and said rod is provided at one end with a drum w to which one end of the band or strip 0t is fastened. The other end of said band or strip a is fas tened to the rim of a drum 01 having end Serial No. 424,974. (No model.)

plates 71. and mounted to turn on the pivot c that is driven into the side of the windowcasing. Said drum contains the spiral spring 3, the inner end of which is slitted and adapted to receive a tooth s projecting from the pin 0, the outer end of said spring being fastened to the interior of the drum. A ratchet-wheeli is fastened to one of the sideplates h of the drum and is engaged by a pawl is pivoted to a fixed arm on the pin 0, said pawl having a weighted'free end Z. The chain 02 is fastened to the weighted pawl 10 and passes from a pulley p on the windowcasing, and to the free end of said chain a handle an is fastened, which is composed of two sections united by a hinge and provided with a spring for pressing the lower parts of the handles from each other, thereby pressing the upper parts against the band a which passes up between two sections of the handle.

The operation is as follows: When it is desired to permit the curtain to drop, the two handle-sections M are pressed together and pulled downward, so as to lift the pawl 70 and disengage the same from the ratchet-wheel i. The curtain descends by its own weight and in so doing unwinds the band or strip a, from the drum d, whereby the drum is rotated, causing the slitted end of the spring 8 to engage the tooth s on the pin 0 and thereby said spring is wound up and brought intension. The descent of the curtain can be regulated by pressing the handle-sections an more or less together, so as to produce more or less friction on the band a. When the curtain is to be raised, it is simply grasped at its lower end and lifted upward. The tension of the coil spring is sufficient to rotate the drum and to wind the band a on the same.

The friction between the handle m and the band a is sufficient to draw the handle m downward to such an extent that the pawl is is lifted and disengaged from the ratchetwheel '6, thereby avoiding the disagreeable rattling noise when the curtain is being raised.

Having thus described my. invention, 1 claim as new and desire to secure byLetters Patent- 1. The combination with a curtain and roller, of a band having one end secured to the roller, a spring drum to which the other end of the band is fastened, a ratchet wheel on the drum, a pawl engaging the ratchet wheel, a spring brake handle through which the band passes, a chain connecting said spring brake handle with the pawl and a support over which said chain passes, subratchet-wheel on said drum,a weighted pawl engaging said ratchet-wheel, a chain connected with the pawl, a pulley over wlnch the chain passes, and a handle composed of two sections hinged together, which handle is attached to said chain and through which handle said band passes, thereby adapting said handle to serve for disengaging the pawl from the ratchet-wheel and also as a brake for the band, substantially as set forth. In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

SEBALD S'IAIIL. \Vitnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6089306 *Nov 13, 1998Jul 18, 2000White Consolidated Industries, Inc.Ratchet type cam lock for a roller
US6206078 *Mar 6, 2000Mar 27, 2001White Consolidated Industries, Inc.Ratchet type cam lock for a roller
Cooperative ClassificationE06B9/90, A47B2095/028