US2470591A

US2470591A - Window control device

Info

Publication number: US2470591A
Application number: US53005A
Authority: US
Inventors: Paul A Viola; Viola Vincent
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-10-06
Filing date: 1948-10-06
Publication date: 1949-05-17
Anticipated expiration: 1966-05-17

Description

Patented May 17, 1949 WINDOW CON TROIF DEVICE Paul A. .Viola. andVihcentViola, Br'idgeport, Comm.

ApplicatiOnOctober-G, 1948, -Serial=N; 53,005

I 6 Claims; 1

This invention relates to awindow-control. de-

vice, and has foran object to provide-a simple and effective device which may beeasily mounted on the edge of a slidable sash to automatically hold the sash at different heights or different "adjusted positions, but still will permit ready raising or lowering of the sash.

Another object is to provide a device for per mitting effective operation of the sash and retaining it in different positions withoutthe use of the usual and troublesome sash cord and weights.

With the foregoing and other objects in View, we have devised the construction-illustrated:in the accompanying drawing forming a part of this specification. It is, however, to be understood the invention is not limited to the specific details of construction and arrangement shown, but may embody various changes. and modifications within the scope of the invention.

In this drawing:

Fig. 1 is a vertical section through a portion of the window frame and sashshowingone of our improved devices applied thereto;

Fig. 2 is a transverse detailsection onan. en-

larged scale taken substantially on:line2-2 of Fig.1;

Fig. 3 is a vertical longitudinal section of the device removed from the sash, the sectionbeing substantially on line 33 of Fig. 2;

Figs. 4 and 5 are front and side views respectively of the carryingblock for the friction shoe;

Figs. 6 and 7 are side and end views respectively of the cam blocks, and

Figs. 8 and 9 are top and side views respectively of the spring abutment discs.

A portion of a window frame is indicated at it] having the usual upright guide channel I l for the edge of the side members of the window sash [2, this sash being guided for vertical sliding movement by the front and inner guide ribs I3 and [4 respectively. Mounted on the bottom wall l5 of this channel is a substantially flat metal strip It. This strip runs the full height of the channel longitudinally thereof and is provided at its opposite side edges with laterally inclined flanges l1 engaging the bottom wall iii of the channel, as shown in Fig. 2, so as to space the substantially flat central portion if the strip from the bottom wall l5 of the channel and provide a somewhat yielding spring efiect for this strip. This strip may be mounted by any suitable means, such, for example, as the screws [8.

The transverse edge of one side member of the sash I2 is provided with a longitudinal recess 2 or groovea-l9 'opening through this: edge of the sash. Inthis-groove is .mounted. a support 28 comprising-atubular housing 2!, the rear walls of which'maybe extended at its opposite ends as shown'at 22 to provide extensions for securing the support in the recess or groove is by any suitable--means, such as the screws 23.v Intermediate the'length of the housing '2! and .inits front wall facing the'channel II, it is provided with an elongated opening: 24, and mounted in this housing and:in this opening is a supporting block 25. This block is of a substantially rectangular shape, and is-provided at its opposite ends with cam lugs 26 havinginclined cam surfaces 21. Located within-the housing at the opposite ends of this block arecam blocks 28. These springs. 30 pressing on the blocks and shifting.

them toward each other so as to press their in- 1 clined cam surfaces Ell-against those at the oppocular discs .or blocks 3! secured inthe opposite.

ends of-the tubular housing. 2| by any suitable means, such as the transverse pins 32. As the. block 25-substantially fills the side opening, 2Q

and the discstl-rfilland close the opposite ends.

of the tubular housing, the elements within this housing are fully protected from the entrance of dirt and moisture.

Mounted on the outer side edge of the block 25 is a friction shoe 33. This may be of any desired length to secure the desired friction, its outer side surface engaging the substantially fiat portion of the metal strip [6 for frictional sliding engagement therewith, the shoe being secured to the carrying block 25 by any suitable means, such, for example, as the screws 34. The shoe may also be made of different materials, but it is preferably of hard wood to slide on the metal strip Hi. It will thus be seen that the action of the cam blocks 28 under the pressure of the springs 3!] tends to shift the carrier block 25 laterally and outwardly, or to the left as viewed in Figs. 1 and 2, to press the shoe 33 against the surface of the strip [6 for frictional sliding movement thereon. One of these devices may be mounted on each side edge of the sash, or if preferred, two may be mounted on each side edge, one near the top and the bottom of the sash, or one only may be mounted in one side edge of the sash as found desirable and depending on the weight of the sash. The construction can also be reversed so that the strip I6 is mounted on the sash while the housing and the shoe 33 are mounted in the window frame.

It will be evident from the above this forms a very simple construction which may be easily and quickly mounted in the window frame and sash, and that the shoe is automatically pressed with a uniform pressure against the friction strip IS with a uniform sliding frictional engagment. The strip l6 as indicated above has a certain yielding resilient action under pressure of the shoe 33, so that the two coact to providea smooth frictional sliding action which produces a uniform frictional engagement throughout the full movement of the sash. This permits ready operation of the sash, either in raising or lowering, and with a uniform action in all positions, and the frictional action automatically retains the sash in any position in which it is adjusted. It will function indefinitely. With this device the usual sash cord and weights are eliminated, eliminating the annoyances and difficulties in installing these cords and weights as well as those caused by frequent breaking of the cords.

Having thus set forth the nature of our invention, we claim:

1. A window control device comprising a metal strip to be mounted on the bottom of the sash guide in a window frame and extend longitudinally thereof, a support to be mounted on the sash including a housing, a pressure block mounted in the housing, a pair of cam blocks in the housing having inclined surfaces engaging opposite ends of the first block, springs tending to shift the cam blocks against the pressure block to shift it laterally, and a, pressure shoe carried by the pressure block to slide along the surface of the metal strip.

2. A window control device comprising a substantially fiat metal strip to be mounted on the bottom of the sash guide in a window frame and extending longitudinally thereof, said strip being provided with longitudinal laterally inclined flanges along its opposite edges to engage the bottom of the guide and space the substantially fiat portion of the strip therefrom, a support to be mounted in the sash, a block mounted in the support, spring operated cam means tending to force the block laterally, and a friction shoe carried by the block and pressed against the surface of the strip for frictional sliding engagement therewith.

3. A window control device comprising a support to be mounted on the sash, a pressure block mounted on the support to move laterally, spring pressed cam means at the opposite ends of the block tending to shift the block laterally, and a friction pressure shoe carried by the block.

4. A window control device comprising a support to be mounted on the sash and including a housing provided with an opening in a side wall, a block mounted in the housing and projecting through said opening, cam blocks in the housing at opposite ends of the first block, springs tending to shift the cam blocks to press them against the first block, said blocks being provided with cooperating camming faces to shift the first block laterally, and a pressure friction shoe carried by said latter block.

5. A window control device comprising a support to be mounted on a sash and including a substantially cylindrical housing provided with an opening in a side wall, a supporting block in the housing and extending through said opening, the opposite ends of the block being inclined, cam blocks mounted in the housing at opposite ends of the first block and provided with inclined ends engaging the inclined ends of the first block, springs acting on the cam blocks to press them against the first block to shift it laterally, and a friction shoe carried by the first block.

6. A window control device comprising in combination a window frame including a channel guide for the edge of a sash, a sash having its edge slidable in said guide, a substantially flat metal friction strip mounted on the bottom of said channel and extending longitudinally thereof, said sash being provided with a groove in its side edge, a tubular housing mounted in the sash groove and provided with an opening in its side wall facing the channel, a block mounted in the housing and in said opening, cam blocks in the housing provided with camming surfaces engaging opposite ends of the first block, springs tending to force the cam blocks against the first block to shift it outwardly, and a friction shoe carried by the first block and pressedagainst the friction strip for sliding engagement therewith.

PAUL A. VIOLA. VINCENT VIOLA.

No references cited.