US2163965A - Spring tightening means for window sash - Google Patents

Description

' Julie 1939- J. w. SHRIVER El AL 2,153,955

srnme TIGHTENING mums FOR wxunow SASH Filed June 14, 19:51

' INVENTO v JOHNW $11511 FRANK J3 fioovEH ATTORNEY.

Patented June 27, 1939 SPRING TIGHTENIlgG MEANS roe wmnow ASH John W. Shriver and Frank S. Hoover, Wichita, Kans.

Application June 14, 1937, Serial No. 148,025

1 Claim.

Our invention relates to a spring tightening means for window sash.

The object of our invention is to provide a spring element, and apply the same to members of a window frame as tensioning means to move sash that are loose fitting in the frame for snug engagement with their respective stop and parting bead, said stop and bead being on the inner side of their respective sash, rendering the joints there-between air tight, but permitting said sash to slide freely upward and downward in the frame.

A further object of our invention is to provide a spring element that can be applied to the frame elements that forms the sash runs without change or mutilation of the same for the purpose set forth in the above first object.

A still further object of our invention is to form the outer ends of each spring portion in such a way as to avoid end contact with the sash, when the latter is moved therefrom, and returned to engagement therewith.

A still further object of our invention is to provide a spring tensioning element having means to permit the same to rock, as the sash moves from engagement therewith, by which arrangement end engagement is also avoided, and when the said sash is moved to full engagement with the spring element, full tension for the purpose set forth is had, it being understood, that the spring portions may be the same as when stationarily arranged, except the out turn extremity of the ends may be of less curvature.

A still further object of our invention is to provide a spring tensioning element, that is inexpensive, easily applied, and efficient in its function, and the said springs may be applied plurally, spacing the same along the frame on opposite sides thereof, to engage with each side rail of the sash.

These and other objects will hereinafter be more fully explained, reference being had to the accompanying drawing forming a part of this specification and in which like characters will apply to like parts in the different views.

Referring to the drawing:

Fig. 1 is a cross sectional view through a conventional type of a window frame, and portion of wall to which it is applied, also showing in like section, the upper and lower sash and an end View of the spring elements as applied to their respective members of the frame.

Fig. 2 is an inside elevation of a fragmentary portion of a frame, as arranged for a single sash that is subject to being raised and lowered, show- (01. sea-1r ing the application of the spring element to the blind stop, the screws omitted, also a sectional View through the bottom rail of the sash moved upward from. engagement therewith, also illustrating the possibility of avoiding end engagement with the spring, when the sash is being returned.

Fig. 3 is a view of the spring turned 90 degrees from that shown in Fig. 2.

Fig. 4 is a similar view to that of Fig. 2, except showing the spring element rockable to avoid end contact.

The invention herein disclosed consists of a spring tensioning element consisting of a pair of leaf springs I, oppositely extending from a flange element 2, that is bent at right angles and integrally joined to one edge of the said springs, said flange having a plurality of apertures 3 through which screws will engage as securing means therefor, to a blind stop 4 or a parting bead 5, between which the upper sash 6, of a double hung window, will slidably engage vertically, while the inside or lower sash 1 is slidable in like manner and being secured by an inside stop 8, the latter being adjustable to and from its respective sash, but permanently secured at a position to permit the sash to slide freely, and not sufficiently binding the same, to render it Weather tight, as the said sash may be irregular in thickness or slightly curved, and in such cases our spring element, as applied to the parting bead, will accommodate resiliently permitting the sash to slide freely, but at all points retain the same to air tight engagement with the inside stop as at A, weatherproofing the sash.

Attention is now directed to the upper or outside sash as fitted to the frame, and being retained in like sliding tendency to that of the other sash, while the blind stop and parting bead are rigid and permanently secured to the frame jamb 9, in other words there being no means for adjustment, the manufacturer of such frames provide ample room for imperfections of the sash, and to overcome such loose fitting condition, we attach our spring elements to the edge of the said blind stop, forcing close engagement against the parting bead as at B, for air tight engagement as described for the other sash.

The same condition of loose sash fitting as in the above description, occurs in single sash frames as shown in Figs. 2 and 4, in. which case our spring elements will function with equal efiiciency, and the said elements being spaced along each side of such sash, and those above described, will disengage in their sliding movement from the springs, and to insure against end contact of the said sash when brought to engagement therewith, note that the outer end portion of each leaf has a bend outward as at C, by which means, the terminating portion of the sash is free to pass there-under, forcing the said sash to snug engagement as above described.

We have also arranged as a modification, a spring tensioning element having a flange with a single aperture for screw engagement, and upon which the element will rock as shown by dotted lines D, in Fig. 4, in which case the outer terminal ends of each leaf of the spring may be slightly turned outward without danger of end engagement, due to its outward rocked position, but brought to full tension as the sash moves to engagement with the other leaf, and such other modifications may be employed as lie within the scope of the appending claim.

Having fully described our invention what we claim as new and desire to secure by Letters Patent is:

In a spring tightening means for a Window sash slidably mounted in a frame, a rockable leaf spring and a flange having a single aperture concentrically positioned therein through which a screw will engage, the flange being integrally joined to one edge of the leaf spring medially of its length and positioned at right angles to the side of the spring, the spring having a curvature where it joins the flange, the concavity of the curvature oppositely positioned to the flange while the outer end portions of the spring each having a curvature opposite to that of the first named curvature, said spring element being attached to the frame by the screw in working relation to the sash and medially of the upper and lower extremity thereof so that when the sash moves in contact with the spring the latter will respond in its function as the sash moves to engagement therewith, and the said spring being adapted to rock on the axis of the aperture in the flange by which means one end of the spring is rocked outward by the sash moving from engagement with the spring to avoid contact with the end thereof when the sash returns to engagement therewith.

JOHN W. SHRIVER. FRANK S. HOOVER.

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