US1715858A

US1715858A - Rolling screen

Info

Publication number: US1715858A
Application number: US224602A
Authority: US
Inventors: Nels H Nelson
Original assignee: Rolscreen Co
Current assignee: Rolscreen Co
Priority date: 1927-10-07
Filing date: 1927-10-07
Publication date: 1929-06-04
Anticipated expiration: 1946-06-04

Description

N. H. NELSON ROLLING SCREEN June 4, 1929.

Filed Oct. 7, 1927 Qwentm MJ'LNEL-STOJY attain;

Patented June 4, 1929.

1 UNITED STATES PATENT OFFIE.

NELS H. NELSON, O1 DES MOINES, IOWA, ASSIGNOR TO THE ROLSCREEN COMPANY,

' F PELLA, IOWA, .A CORPORATION OF IOWA.

ROLLING SCREEN.

Application filed October 7, 1927. Serial No. 224,602.

The primary object of the present invention is to provide an improvement in the con struction of screens of the type designed to be wound and unwound relative to a roller mounted in a housing and to have its side margins arranged for travel in slotted tracks or guides.

Another object of this invention is to provide an improved construction for 'a latch for the screen and an improved method of mounting such latch relative to the track. With these and other objects in view, my invention consists in the construction, arrangement and combination of elements hereinafter set forth, pointed out in the claims and indicated by the accompanying drawin ,in which:

ig. 1 is an elevation partly in section, of a window frame equipped with my improved rolling screen, a portion being broken away. I Fig. 2 is an enlarged vertical section on the line 22 of Fig. 1.

Fig. 3 is a detail horizontal section on the line 3-3.of Fig. 1. p 2 Fig.4 is a detail horizontal section on the line 44 of Fig. 2, illustrating one of the spring latches and the carrier therefor.

Fig. 5 is a perspective view of a small section of track, showing the means for preventing upward movement of the carrier for the spring latch. 0

Fig. 6 is a perspective view of a spring latch and the carrier therefor.

In the accompanying drawings, I have used the numeral 20 to indicate generally, a

sheet metal housing which is designed to be.

mounted transversely at the upper end of an opening, such for instance as is defined by a window frame 21 or other similar structure, said frame being provided at its lower end with a ledge or sill 22. Mounted rigidly in and centrally of the housing 20 and ex.- tending from end to end thereof is a spindle or rod 23. A roller 24 of hollow form. is journaled on the spindle 23 and extends longitudinally of the housing 20. A coil spring 26 is wound on the spindle 23 and has one end attached thereto and the opposite end attached to the roller 24 so that power may be stored in said spring to tend to pro. duce a rotation of the roller in one direction. A sheet of screen mesh 27 is attached at one of its end margins to the roller 24 and is adapted to be wound thereon and to be extended through a longitudinal slot 28 formed at the lower rear corner of the housing 20.

Mounted at the side margins of the opening defined by the window frame 21 are vertical tracks or guides A and B, which tracks extend from the sill 22 to the bottom of the housing 20 at a point adjacent and immediately below the slot 28. The tracks A and B are adapted to receive the side margins of the screen 27 and. other elements carrled thereby when the screen is withdrawn from the housing. Each track A and B' preferably comprises a substantially cylindrical guide portion 29 and an attaching flange 30 by means of which the track is secured to the window frame. Each cylindrical guide 29 is formed with a longitudinal slot or openin 31 "on the side opposite to the attaching ange 30 and directed toward the median line of the window frame, through which slot one marginal portion of the screen is adapted to extend and in which it is arranged for travel.

A binder strip 32 is attached to the lower marginal portion of the screen 27 and extends transversely over thatportion of the screen normally extending between the spaced tracks A and B, said binder strip including a finger ledge 33 bent substantially 'at right angles at 1ts lower mar in and adapted to contact the upper face 0 the sill 22. A friction block 34 is mounted at each endof the binder strip 32 and is slidably received within one of the tracks A or B. It is obviously necessary to provide means for holding the screen in its extended position against the retracting influence of the spring 26 and for this purpose I have provlded a spring latch at each side of the window opening. One of these spring latches is shown in detail in Fig. 6 and is designated by the numeral 47. Each latch is attached at its upper end-only and has its lower end flaring inwardly of the window opening and provided at one side with a laterally turned lug 48 having its lower margin spaced slightly above the window sill. or ledge 22 and adapted to engage an end portion of the ledge 33 of the binder strip when saidlatch is moved into cont-act with said sill or ledge.

lhe lug 48 has a sloping inner face adapted action of the with the ledge 83. v

Heretofore, it has been customary to mount the latches similar to my latches 47 directly on the lower end portions of the tracks. I have found disadvantages with this arrangementand have provided a special carrier for each latch, which carrier is adapted to be mounted on thetrack and to be adjustable thereon. mounting the latch directly on the track is that it is not always possible to make the track of the proper length for a given installation before it leaves the factory. As the track is of special formation at its upper end, it can not easily be cut off at the upper end to make it fit a given job and if the latchv is permanentl attached to the lower end of the track, t e track can not be cut OK at its lower end, for if this weredone, the latch would not come in the proper position. Hence, if the workman installing the apparatus was too long, he would either have to send for another track of the proper length or would be compelled to cut out a section between the ends of the track, thus making an undesirable joint in the track and an installation that would probably cause trouble in the'operation of the screen. The special carrier I have provided, is shown particularly in Figs. 4 and 6 and comprises a tubular portion 49 adapted to fit snugly, the tubular guide portion 29 of the track and having on one side a vertical slot 50 corresponding with the track. Opposite to the slot 50, the carrier may be formed with a double flanged portion 51 to embrace the attaching flange 30 of the track. The carrier is adapted to be telescopically mounted on the lower end of the track and is closed at its lower end by means of an abutment or wall 52 designed to limit upward movement of the carrier relative to the track. 'The spring latch 47 is attached at its upper end to the tubular part 49 of the carrier, as shown in Fig. 3, by means of a flange 53 which may be soldered or w'lded to the same. carrier is so positioned on the track that the spring latch comes in the proper place to engage the ledge of the binder strip and downward movement or removal of the carrier from the track is prevented by the window 'sill' '22 after thetrack has been installedwith the carrier thereon. By the use of this special carrier, the workman may cut off the tracks to the proper length after he arrives uponthe job and has accurately measured One difficulty with found that the track he had the yertical slot 31 of The carrier, and a spring dow frame. If he should inadvertently cut the track too short so that the abutment 52 will not contact with the lower end of the track when the latch 47 is in its proper position, then he may by the use of the ordinary tools in his kit, provide a supplementary means to limit the upward movement of the carrier before the abutment reaches the lower end of the track. He may do this by striking out a lug or car 54: from the attaching flange 80 of the track (Fig. 5) and bend said lug slightly to one side at the proper elevation to engage a shoulder 55 (Fig. 6) at the upper end of the flange 51 of the carrier. By this means the installing workman can easily produce the proper relations of the latch with the track and window ledge and do it so as to make a satisfactoryjob.

I claim as my invention:

1. In a device of the class described including a fabric arranged to be wound and unwound, tracks arranged to receive the side marginal portions of said fabric and having slots through which the fabric extends, and spring latches arranged to hold the fabric in extended position; latch carriers comprising members telescopically embracing end portions of said tracks, said carriers being formed with means for engaging the ends of the tracks to limit end movement relative thereto, said spring latches being attached to and carried by said carriers.

- 2. In a device of the class described including a fabric arranged to be wound and unwound, tracks arranged to receive the side marginal portions of said fabric and having slots through which the fabric extends,

spring -latches arranged to hold the fabric being formed with auxiliary means for engaging said latch carriers to limit the movement of said carriers before they have reached the ends of said tracks.

3. A latching means for a rolling window screen having a screen arranged for the travel of its side margins in vertical guide tracks, said latching means comprising a carrier having a body portion fitted to and slidable on the lower end of a guide track, said carrier being formed with an abutment for engaging the lower end of the guide track and limiting upward movement of the latch carried by said carrier for holding the screen in extended position.

4. A latching means for a rolling window the lower end of a guide track, said body portion being formed with a vertical slot registering with the slot of said guide track,

said carrier being formed with an abutment for engaging the lower end of the guide track and limiting upward movement of the carrier, and a spring latch carried by said carrier for holding the'screen'in extended position.

5. A latching means for a rolling window screen having a' screen arranged for the travel of its side margins in vertical guide tracks, said latching means comprising a carrier having a body portion fitted to and slidable on the lower endof a guide track, said carrier being formed with an. abutment for engaging the lower end of the guide track and limiting upward movement of the carrier, a spring latch carried by said carrier for holding the screen in extended po sition, and means on said carrier for engaging a portion of the track before said abutment reaches the lower end of the track.

6. A latching means for a screen having a fabric arranged for travel of its side margins in vertical guide tracks, said latching means comprising a carrier .having a body portion adjustable on the lower end of a guide track, said carrier being formed with means for engaging a portion of the guide track to limit upward movement of the carrier, and a latch member carried by said carrier for holding the fabric in extended position.

7. A latgh for a rolling window screen having a laterally directed ledge on its lower margin, comprising a resilient body member attached at its upper end to a support,

and .a lug on said body member directed toward the median line of the screen, said lug having a sloping inner face adapted to be engaged by the ledge of said'screen in its downward travel.

8. A latch for a rolling window screen having a laterally directed ledge on its lower margin, comprising a resilient body member attached at its upper end to a support and having its lower portion normally inclined toward the median line of the screen,

and a lug on said body member directed toward the median line of the screen, said lug having a sloping inner face adapted to be engaged by the ledge of said screen in its downward travel.

9. A latch for a rolling window screen having a laterally directed ledge on its lower margin, comprising a resilient body member attached at its upper end to a support, and a lug on said body member directed toward the median line of the screen, said lug having a sloping inner face adapted to be engaged by the ledge ofsaid screen in its downward travel, the lower margin of said lug being spaced above the farthest point of travel of the screen a distance corresponding substantially with the thickness of said ledge.

10. A latch for a rolling window screen having a laterally directed ledge on its lower margin, comprising a resilient body member attached at its upper end to a support and. having its lower portion normally inclined toward the median line of the screen, and a lug on said body member directed toward thev median line of the screen, said lug having a sloping inner face adapted to be engaged by the ledge of said screen in its downward travel, to push said latch laterally and permit passage of the ledge, the lower margin of the lug being adapted to engage the upper surface of said ledge when the latch has resumed its normal position.

11. A latch for a rolling window screen having a laterally directed ledge on its lower margin, comprising a resilient member attached at its upper end to a support, and a lug on said member directed toward the median line of the screen, said lug having a sloping inner face adapted to be engaged by the ledge of said screen in its downward travel, to push said latch laterally and permit passage of the ledge, the lower margin of the lug being adapted to engage the upper surface of said ledge when the latch has resumed its normal position.

12. A latch for a rolling window screen having a laterally directed ledge on its lower margin, comprising a resilient member attached at its upper end to a support, and a lug on said member directed toward the median line of the screen, said lug having a sloping inner face adapted to be engaged by the ledge of said screen in its downward travel, to push said latch laterally and permit passage of the ledge, the lower margin of the lug being adapted to engage the upper surface of said ledge when the latch has resumed its normal position and the lower margin of said lug terminating short of the lower edge ofthe member upon which it is formed whereby the portion of the member below the lug will strike against the outer edge of the ledge when the latch has resumed its normal position.

13. A latch for a rolling window screen having a laterally directed ledge on 1ts lower margin and a track for the slde edge of the screen, comprising a resilient member adinstably carried by the track, and a lug on said member directed toward the med an line of the screen, said lug having a sloping inner face adapted to he engaged by the ledge of said screen inits downward travel, to push said latch laterally and permit passage of the ledge, the lower margin of the 5 lug being adapted to engage the upper suriace of said ledge when the latch has resumed its normal position and the lower edge of the ledge when the latch has resumed its normal posit10n.

NELS H. NELSON.