US997650A - Extensible bracket. - Google Patents

Description

A. DAHLEN.

EXTENSIBLE BRACKET.

APPLIOATIQN FILED MAY 2a, 1908.

997,650, I Patented July 11,1911.

INVENToH v Amp/15w DAHLA': 4V

"parts t 45 UNITED STATES PATENT FEW-C.

ANDREW IDAHLEN, or CHICAGO, ILLINOIS.

EXTENSIBLE BRACKET.

To all whom it may concern;

Be it known that I, ANDREW DAHLEN, a citizen of the ,United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement inExtensible Brackets, of which the following is afull, clear, concise, and exact description, reference being had to the accompanying drawing,'forming a part of this specification. I

My invention relates to extensible brackets," such for instance as are used in the support of a desktelephone, n1irror,,or other device, and has for its object the provision of an improved bracket of this kind, in which the wear when it is being extended andcontracted is localized in such manner that its life ,is prolonged and the effect of wear and tear is diminished so that the bracket may present a good appearance even when constantly used.

It is further desired to provide means to remove all sliding surfaces, except at such points where links of the bracket are riveted together. And further to provide means whereby cords may be mounted along the bracket and held so that they are not subjectto wear. I

.Further objects and advantages of my improved inventionwill be apparent from the detailed description thereof of the preferred embodiment as will be set forth in connection with the accompanying drawing, showing the bracket as for use with a desk telephone, in which Figure 1 shows the bracket in an extended position. Fig. 2 shows the bracket partially retractech'and holding a complete desk telephone, the preferred method of mounting the cords being also shown. Fig. 8 shows the bracket completely collapsed,and Fig, is a detail of the cord mounting device. Like characters ofreference indicate like hroughout the dilferent figures. The extensible bracket as shown consists of links 1 and 11 held together at th'ci r ends and also at their middle points by cylindrical rivets 2--2, so that the links may rotate about the rivets. The bracket can thus assumo the extended position shown in Fig. lior the collapsed position shown in Fig. Clamps 33 and 66 secure the end links to post 4 and to the connecting-rod 5.

Clamped to the connecting-rod 5 is a holder 7, provided we). a clamping screw 8, said holder being adapted to rece ve a desk telein Fig. 1, and when it is in its Specification of Letters Patent. Patented July 11, 19]] 1 Application filed May 23, 1908.. Serial No. 434,482.

By virtue of this improved construction no sliding bearing is needed for the lower extremities of the links 1lll, as the bell crank levers l0-l0 guide them around the mountingpoints of'said bell crank levers, so that the bracket can assume its collapsed position, as shown in Fig. 3, and all of the bearing surfaces consist of the circular rivets. lVith this improved lattice work construction it is possible to so guide the cord 12, which comes from the desk telephone line, that it will follow along the line of the various links; and the same length of cord is required practically both when the bracket is in its extended position, as shown collapsed position, as shown in Fig. 3. No wear or tension therefore, need be exerted on the cor'd. can easily be inserted or removed from the cylindrical rivets 2-2, and which eyelets hold the cord. I have used the word lazy tongs in the claims to signify the links lying between any two rivets 2, 2 mounted at the central portions of said links.

I have herein shown and particularly described the preferred embodiment of my invention, and

. VVhatI claim as new and desire to secure by Letters Patent is:

1. An extensible bracket comprising lazytongs and a support, and a swinging link supporting and connecting one end of said lazy-tongs to said support and allowing extension and contraction of same.

2. An extensible bracketcomprising lazytongs, a support with which one end of said lazy-tongs has a pivotal and a swinging link connection, and a holder with which the I provide little eyelets, 13-13, which other end of the lazy-tongs has a pivotal and swinging link connection.

3. An extensible bracket comprising lazytongs, and a holder, said lazy-tongs having a swinging link connection with said holder "for supporting the latter and for permitting expansion and contraction of the lazy-tongs.

4. A device of the class specified comprising a supporting rod, lazy tongs supported on said rod, one member of the lazy tongs havlng a plvotal connection wlth a bracket ally connected with a. swinging link, the lat:

ter being pivotallyconnected with another member of the lazy tongs, said link being adapted to permit expansion and contraction ofsa'idtongs In Witness whereof, I hereunto subscribe my name this 15th day of Ma y, 1908.

ANDREW DAHLEN.

Witnesses:

RICHARD LEMANN, CHRIS H. BECKER.

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