US1554490A - Apparatus for raising and lowering shutters, blinds, or curtains - Google Patents

Description

Sept. 22, 1925. 1 1,554,490

J. L. BON

APPARATUS FOR RAISING AND LOWERINC' SHUTTERS, BLINDS, OR CURTAINS Filed May 27, 1920 5 Sheets-Sheet 1 Sept. 22, 1925. 1,554,490

J. L. BON

APPARATUS FOR RAISING AND LOWERING suuw'mas, BLINDS, on cum-nus Filed May 27, 1920 3 Sheets-sheet 2 J. L. BON

Sept. 22, 1925. 1,554,490

APPARATUS Peri m'usmc nn LOWERING sxw'r'rsas; BLINDS, 0R CURTAINS Filed llay 27; 1920 3 Sheets-Sheet 3 bottom end ofits course.

or sheet ribbon 5 bent against the barrel B; consequently, it exerts a braking action on the spiral spring not shown contained in the barrel B, thus preventing the pinion 4: from rotating.

The oscillating plate C is formed adjacent one edge with a circular opening. 16 adapted to snugly receive circular projection 16 on the forked head 12 of the lever 11; this plate C is cut out at 17 in its central part. "Opposite this cut out part of the said plate two toothed sectors 18 and 19 can move concentrically, the centre of these sectors being the axis of the circular projection 16 of the lever 11 fitting the opening 16. These toothed sectors are provided with small connecting links 20' secured on the one hand to the plate G and, on the other hand, to the said sectors 18 and 19. The one or the other of the latter meshes with the pinion 4; and is thus actuated by the spiral spring contained in the barrel B. Extending from the edge of the oscillating plate C opposite that edge near which the opening'16 is formed is a casing C which is somewhat thicker than the body of the plate G. In that casing C independent oscillating finger-shaped levers 22, 23 both mounted on the axis 21 are provided which are respectively connected through connecting links 24, 25 with the toothed sectors 18, 19.

Close to the hollowed-out ends of the fingers 22, 23 an ogive-shaped cam 26 bears; this cam is mounted on the extremity of a rod 27 passing through aring 28 provided with two bearings 29 which pivot in the side walls of easing C, only one wall being shown in Figure 1. In the forked end of the rod 27, the flat part 30 of the controlling rod 31 is thrust and fixed by means of a screw 32. The rod 31 which may be more or less long is furnished with a handle or lever, not shown. Springs 33 constantly force the fingers 22, 23 to press against the periphery of the cam 26.

In order to lower the shutter, blind, or the like the pinion 4L, meshing with the toothed sector 18 (see Fig. 4) all that is necessary is to pull the rod 31 down; as the oscillating plate C is pivoted on the fixed pinion 1, owing to its meshing with the toothed sector 18, said plate C will force the forked head 12 upwardly, said head sliding on the pin 13. The. arm 11 being thus raised carries upwardly the rod 9 thus rotating the drums? in a direction to release the brake-band 5 from braking engagement with the barrel B. The pinion 4; is then free to rotate in the direction shown by the arrow (Fig. 4) and moves the toothed sector 18 until such sector has reached the v I If it is desired tofurther rotate the pinion 4, it is only necessary to push the rod 31 upward; in such a motion, as the arinll. is no longer forced upwards, the brake-band 5 exerts a braking action on the barrel and thus stops the pinion 4E. The toothed sector 18 rolling on the teeth of the stationary pinion then comes back to its original position. At this moment, if one pulls the rod 31 down, the same movements take place, thus causing the pinion torotate and the shutter, blind or thelike to be lowered.

' If now it is desired to raise the shutter (Fig. 1) the rod 31 is turned to the extent of 180; in such a rotation, the cam 26 moves the fingers 22 and 23 and the connecting rods 24: and 25, thus moving the toothed sector 18 away from the pinion and causing the toothed sector'19'to mesh with the pinion 4 (Fig. If now up and down motions are imparted to the rod 31, the above described motions of the pinion 4L and sector 18 take place between said pinion and i the sector 19 (Fig. 5).

When the rod 31 has reached its uppermost position, either the sector 18 or the sector 19 meshing with the pinion 4 acts as a catch and, completing, the braking action,

insures the absolute stoppage of the barrel B. d

When a is desired to shift the position occupied by the apparatus from the right side (Fig- 1) unto the left side (Fig.2),v

it is only necessary to causethe fixing plate A to turn to the extent of 180? in order that the pins 8 and 8 be moved from the right to the left side; this being effected, thedrum 7 is released from the said pin 8 and thrust on the other pin 8. The extremities of the brake band 5 pressing round the barrel B are then fixed to the screws 6. o-f the drum and the rod 9 is connected with the lever 11, the spring 14: having first been tightened and attached to the post 15 symmetrically placed in relation to the post 15. The oscilating plate G is then juxtaposed upon the barrel B so that its casing C is placed on the left side of the apparatus and its toothed sector 18 engages the pinion 4; the whole is finally firmly kept in position by means of the cap D which is laid and fixed on the top of the columns 15 and 15 This apparatus while especially intended to be applied to shutters, blinds or curtains may also be utilized as a closing and looking device for metal curtains used to pro-.

tect shop-windows and the like. In fact,

when it has been completely lowered, it is I casing, a spring actuated drum mounted on said plate for rotation, a pinion fixed to said drum, a braking band extending around the periphery of said drum, a lever pivotally mounted on said plate and having a drum concentric with its pivot and to which drum the ends of said braking band are attached, a lever pivotally connected to the first named lever, and having a forked head, a pivot pin projecting from said plate and engaging in the forked head of said lever, a

spring exerting its tension on said levers to cause the last named drum toturn sufliciently to flex the brake band, an oscillating plate pivotally mounted on said forked head, spaced sector gears, on opposite sides of said pinion, links pivotally attached to said sector gears and said oscillating plate, a pair of cam levers pivotally mounted on said oscillating plate, links connecting said cam levers to said sector gears, a lever pivotally mounted on said oscillating plate and having a cam to operate said cam levers, and springs to press said cam levers against said cam.

2. Apparatus for raising shutters, blinds, or curtains, comprising a plate for attachment to a support such as a window or door casing, a spring actuated drum mounted on said plate for rotation, a pinion fixed to said drum, a braking band extending around the periphery of said drum, a lever pivotally mounted on said plate and having a drum concentric with its pivot and to which drum the ends of said braking bandare attached,

, a lever pivotally connected tothe said first named lever, and having a forked head, a pivot pin projecting from said plate and engaging in the forked head of said lever,

pivotally mounted on said oscillating plate and having a cam to operate said cam levers, sprlngs to press sald' cam levers against sald cam, said oscillating plate having a casing in which said cam levers and said operating cam lever are mounted.

In testimony whereof I have signed my name to this specification.

' JULE-S LEON BON/

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