US 2598887 A
Description (OCR text may contain errors)
June 1952 F. J. BURNS LIFT ROLLER FOR VENETIAN BLINDS Filed Dec. '7, 1949 MH HII...
A TTORNE) Patented June 3, 1952 LIFT'ROLLER- FOR VENETIAN BLINDS- Fred'J. Burns Saginaw, Mich., assignor tc'The GolumbiaMills, Inc., Syracuse-, N. Y.-
Application December 1,1949, SerialNo. 131,540
This invention relates to lift members for Venetian blinds and the like, and more particularly to a hollow, cylindrical head member on which the lift cords are wound for lifting and tilting the blind as the blind control means is actuated.
One of the prime objects of the invention is to design a very simple, practical, and substantial head member, and provide means thereon to form a tape guide and winding; spool, for the ladder tape and lift cords of the blind. 7
Another object of the invention is to design an easily assembled tape guide and winding spool which can be quickly assembled on the head member, and further provide means for locking them in assembled position and relation on said head member.
A further object is to provide a tape guide and spool assembly which can be economically formed, and provide a simple, readily-accessible anchorage on said spool assembly for anchoring the Venetian blind lift cord thereto.
Still a further object of the invention is to provide a head member which includes a standard cylindrical roller having split spool sections mounted thereon, and provide means engageable with said split sections for securing them in assembled relation and also forming a finish for the ends thereof.
With the above and other objects in view, the present invention consists in the combination and arrangement of parts, hereinafter more fully described, illustrated in the accompanying drawing, and more particularly pointed out in the appended claim, it being understood that changes may be made in the form, size, proportion, and minor details of construction, without departing from the spirit, or sacrificing any of the advantages of the invention.
In the drawing:
Fig. 1 is a front-elevational view of a window frame showing a Venetian blind equipped with the improved head member mounted thereon, the facia strip being broken away to show the head member.
Fig. 2 is an enlarged, detail of the assembled head member or roller.
Fig. 3 is an enlarged, fragmentary view showing one of the tape guides and winding spool assemblies in position, the broken lines indicating an exploded view and showing the spool sections and ferrules prior to assembly.
Fig. 4 is an enlarged, transverse-sectional view taken on the line 4-4 of Fig. 2.
Referring now more specifically to Fig. 1 of the drawing in which I have shown a Venetian blind Bmounted in a. window frame 5, said blind comprising a head member 6 which is mounted in suitable brackets I in the usual manner.
The blind member includes two ladder tapes indicated at 88, which ladder tapes rest on the assembled head member but are not secured thereto, and a plurality of slats 9 are mounted in the ladder tapes 8 with abottom rail- I0 provided on the lower ends of the tapes-as usual, and I shall not show or describe the operationof the blind in detail, as this invention is directed broadly to the construction and assembly of the roller, tape guide and spool assembly which make up the head member. A facia strip ll effectively conceals the head member etc. from view and harmonizes with the slats of the blind.
The head member 6 is preferably hollow and can be formed of metal with wood plugs I2 in the ends thereof, and in which the gudgeons I3 and M respectively are mounted, these gudgeons being driven into the wood plugs a distance necessary so that the head member is readily mountable in the head brackets and so that the head members can be readily fitted and provide for limited adjustment where necessary.
As previously stated, the roller is of conventional construction, and the tape guide and winding spool is made up of two semi-cylindrical sections C-C which when assembled, form a shouldered cylindrical member S, the center section l6 of which fits snugly on the roller, and a plurality of indents l I are provided in the spool and roller respectively to prevent rotation of the member S on the roller.
Enlarged shouldered sections l8l8 are formed integral with and adjacent the center section l6, and an opening I9 is provided in the end wall of the spool to accommodate a lift cord 20 which is threaded therethrough, the end of the cord beingknotted (not shown) so that it forms a firm anchorage and permits the lift cord to be wound on the spool without slippage. The end sections 2|--2I of the member S are also enlarged, and ferrules 22-22 are fitted over these enlarged end sections to hold the sections C-C in assembled relation.
To assemble the cap guide and spool, it is merely necessary to take the two formed sections C-C, place them in proper position on the head member '6, thread the lift cord through the opening I!) and knot the end thereof to form an anchor. The ferrules 22-22 are then slid over the ends of the rollers and are fitted over the ends of the sections 2l2l, thus tightly securing the sections in assembled relation and forming a closure and finish for the open ends thereof.
The center section 16 of each member C--C forms a spool on which the lift cord 20 is wound to raise or lower the blind, while the enlarged sections 18-48 serve to support the ladder tape, this ladder tape bridging the spool and hearing on the sections l8l8, the roller 5 rotating with relation to the tape, and the tape may rotate with the roller when the slats are being tilted.
The instant construction and arrangement provides a very compact, economical and substantial head member in which'the lift cord winds on the spool section beneath the ladder tape. It can be easily assembled and forms a trim, clean and neat-appearing head rail in which there are no exposed rough edges.
From the foregoing description. it will be obvious that I have perfected a very simple, practical and relatively inexpensive head member for Venetian blinds.
What I claim is:
A Venetian blind winding spool assembly adapted to be non-rotatably mounted on a portion of a cylindrical blind head rail having circumferentially spaced indentations, the combination comprising, a metallic, multi-shouldered member split on its horizontal centerline into identically similar, shell-like, complementary sections, the center portion of the assembled complementary sections being of reduced diameter toform a winding section with enlarged diameter ladder tape supporting sections formed integral with and on opposite ends thereof, the end wall of one of said enlarged sections having an opening to accommodate a knotted end of a blind raising cord, the end sections of the assembled complementary sections being of an enlarged diameter greater than said ladder tape supporting sections to prevent transverse movement of a blind ladder tape, and ring members telescopically fitted over the end sections of said assembled complementary sections, the one end of each ring member being provided with an end wall having an opening for snugly accommodating the head rail to prevent longitudinal movement of said spool thereon, the center portion of the assembled complementary sections including circumferentially-spaced, inwardlypressed indents adapted to be accommodated in the indentations of said head rail.
FRED J. BURNS.
REFERENCE S CIT ED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 790,662 Reynolds May 23, 1905 974,603 7 Schmidt Nov. 1, 1910 1,958,840 Baker May 15, 1934 2,175,549 Nardulli et a1. Oct. 10, 1939 2,190,013 Byers Feb. 13, 1940 2,250,106 Lorentzen July 23, 1941