US1315704A - Ctjbtaijir-bod - Google Patents

Description

G. A- CARLSON.

CURIMN ROD.

APPLICATION FILED OCT. 28. I918.

Patented Sept. 9, 1919.

UNITED STATES PATENT OFFICE.

GUSTAIF A. OLIRLSON, OF CHICAGO, ILLINOIS, AS$IGNOB 1'0 THE 'BOYE NEEDLE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF IDLIII'OIS.

CURTAIN 8017.

Specification of Letters Patent.

Patented Sept. 9, 1mm.

To all whom it may concern:

Be it known that Gusrar A. CARISON, a citizen of Sweden, who has taken out first papers for citizenship in the United States,

residing at Chicago, in the county of Cook and State of Illinois, has invented a new and useful Improvement in Curtain-Rods, of which the following is a specification.

This invention relates particularly to flexible curtain-rods, such as are commonly employed for sash-curtains.

Curtain-rods of the type here referred to comprise close-wound spring wire coils. Such flexible rods are usually made of closely coiled piano Spring wire. At the present time, such wire is quite expensive and diflicult to obtain; and, moreover, when a curtain-rod is constructed wholly of coiled wire, it is likely to be more flexible than 15 desirable.

The primary object-0f the present 1nven-. tion is to provide a construction which enables the desirable features of the closewound spring wire coil to be retained, and which enables the objectionable features to be obviated.

This purpose is accomplished by means or the invention illustrated in the accompany ing' drawing, in which- Figure 1 represents a broken plan view of a. window-frame, or sash, equipped with a curtain-rod (shown brokenly) constructed in accordance with my invention; Fig. 2, a broken elevational view of the same; Fig. 3, a plan view of one of the close-wound wire coils employed in the construction; Fig. 4, a perspective view of a sleeve employed; Fig. 5, a fragmentary view of a heavy wire or intermediate rod-section employed in the construction; Fig. 6, a broken sectional view illustrating the manner in which the ends of the intermediate rod-section are joined to the wire coils; Fig. 7, a view of a slightly modified form of intermediate rod-section; and Fig. 8, a view of a further slight modification In the construction illustrated, A represents a window-frame, or sash; B, a pair of brackets applied to said frame; and C, an improved curtain-rod mounted in the crack ets B.

The brackets B may be of any suitable form. The brackets are preferably provided with sockets 1 adapted to engage grippers with which the extremities of the curtainrod preferably are equipped.

The curtain-rod preferably comprises an intermediate rod-section, or piece of comparatively stifl wire :2; a pair of resilient rod-sections, or wire coils, 3; sleeves 4i adapted to serve as clamping connections between the inner ends of the coils 3 and the extremi ties of the intermediate rod-section 2, which are extended into the coils; and grippers 5 which a-re'applied to the outer ends of the coils Zvand introduced into the sockets 1 of the brackets B.

It may be stated here that the grippers 5 are adapted to hold the curtain-rod C under tension between the brackets B in the manner described in my copending application No. 259,966, filed of even date herewith. The intermediate-rod-scction 2-has its endportions provided with slight oli-sets, or crimps, 6. The rod-section 2 is of the proper diameter to fit snugly in the end-portion of the coil 3. When the endportion of the rod :2 is introduced into the end-portion of the coil in the manner shown in Fi 6, it produces a curvature of the coil; and when the sleeve 4: is slipped into position to embrace the end-portion of the coil and the inserted portion of the rod-section 2, the effect is to cause a wcdging action within the sleeve. In other words, the sleeve i, which may be a split sleeve formed from sheetmetal, acts as a clamping sleeve, which firmly secures the end-portion of the rodsection 2 to the coil-spring into which it is introduced. The gripping action is such as to prevent disengagement when the curtainrod is placed under tension, as occurs when the I,ggrippers 5 are introduced into the brackets If it be desired to separate the rodscction 2 from the coil-spring, this may be eficcted by tapping the sleeve endwise until it ceases to encircle the portion of the coil which contains the crimped or oil-set portion of the wire, after which the wire may be readily withdrawn from the coil- -It will be understood that the construction described provides for adjustment of the length of the curtain-rod when the curtain-rod is first installed, enabling the curtain-rod to be placed under just the desired tension. In case the coils are wcakcnedby useand it becomes necessary to shorten the V curtain-rod, this may be accomplished by re-adjustment of the coils upon the ends of the intermediate rod-section, the sleeve being first removed and then forced again to the clamping position.

The construction described possesses the advantage that it inquires the use of only comparatively small sections of piano steel wire for forming the coils. It also possesses the advantage of obviating undue flexibility of the curtain-rod while still retaining the desirable feature of tension upon the curtain-rod. The intermediate section 2 may be of strong stifi wire. In practice, the wire coils need not be more than a few inches in length, even in a curtain-rod which is upward of thirty inches in length; In such a curtain-rod, for example, it will sufice to employ coils of about four inches in length, or even smaller.

In Fig. 7, 2 indicates an intermediate rod-section having a slightly dill'crent oliset 6? at the end-portion adapted to enter the coil-spring.

In Fig. 8, 2* represents an intermediate rod-section having a slightly enlarged portion 6", formed by slightly flattening the wire. In this case, the wire must be slightly smaller than the coil spring which it enters, and the embracing sleeve mustbe suficiently small in diameter to force the coils closely against the walls of the enlargement. In each case, the object is to produce such a deformation in the portion of the wire which is introduced into the coil as to cause a clamping or gripping action when the sleeve is caused to embrace the coil and the inserted portion of the wlre-rod.

The foregoing detailed description has,

be understood therefrom, but the appended termediate section.

2. A. curtain-rod comprising a pair of coiled wire sections, an intermediate relatively stiif rod-section having its end-portions extending into said first-named sections, and clamping means embracing the joints between said intermediate section and the coiled wire sections and securing said parts together.

3. A curtain-rod comprising a coiled wire section, a wire-rod section extending; thereinto, and a sleeve clamping said sections together.

'4. A. curtain-rod comprising a coiled wire section, a wire-rod section having an endportion extending into said coiled wire sec tion and provided with a deformation, and a sleeve embracing said members at the joint and serving to secure said members together.

5. A curtain-rod comprising a coiled wire section, a wire-rod section having an endportion extending thereinto and provided with a bend, and a sleeve embracing said sections at the joint and securing them. togather.

(3. A curtain-rod comprising a pair of coiled wire end-sections an intermediate wire rod section having portions extendhig' into said coiled wire sections and provided therein with. deformations, clamping sleeves embracing said sections at the joints and securing said sections together, and bracketattaching' means associated with the outer end-portions of said coiled wire sections.

' GUSTAF A. CARLSON.

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