US997298A

US997298A - Bed-spring.

Info

Publication number: US997298A
Application number: US47506009A
Authority: US
Inventors: Francis Karr
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-01-29
Filing date: 1909-01-29
Publication date: 1911-07-11
Anticipated expiration: 1928-07-11

Description

F. KARE.

BED SPRING.

APILIGATION FILED JAN.29. 1909- 997,298, Patented July 11, 1911.

aumntoz Francis Karl" I W/w UNITED STATES PATENT OFFICE.

FRANCIS KARE, OF HOLLAND, 'MICHIGAN.

BED-simmer.

Specification of Letters Patent.

Application filed January 29, 1909. Serial No. 475,060.

To all whom it may concern:

Be it known that I, FRANCIS KARR, a citizen of the United States, residing at H01- and securing elements may be made in.

highly tempered spring wire without danger of breaking the wire when interweaving or interlocking the several springs or parts of springs together, and, third, to provide a means whereby a cloth, or other fabric .tube

or covering, may be drawn over the wire that forms the spring after the spring has been made and re-tempered, thus averting the danger of burning the covering during the process of retempering. I attain these objects by the construction shown in the accompanying drawing in which- Figure 1 is a plan of the top coil of a spring showing a horizontal crimped or serpent-inc formation at one end, and indicating a corresponding vertical crimp in the body of the spring, the two being covered, to be interwoven or interlocked to fasten them together. Fig. 2 is an elevation of the same showing the vertical crimp or serpentine portion in the body of the spring. Fig. 3 is a perspective of the same showing the crimped portions of the spring assembled, and, Fig. 4 is a plan of the upper coils of adjacent springs showing the manner in which they are secured together.

Similar letters refer to similar throughout the several views.

, My main object in the construction of these springs, is to enable me to place a fabric covering over high tempered springs,

parts and as it is necessary to heat the completed springs to a high degree, after they are formed, for the purpose of increasing their elasticity, I have found it impossible to use covered wire for such springs as the'heat necessary for re-tempering is suflicient to burn and destroy the covering. Hence, I have found it necessary to provide some means whereby the covering may be placed Patented July 11, 1911.

over the wire after the spring has been completed and retempered, and, then, the parts may be interwoven or interlocked to form a connection that will hold the parts firmly together. To attain this object I place the portions of the spring, A, that are to be united, under a proper die and form a crimped or serpentine portion, a, at the end of the spring, projecting in one direction,

and a correspo-ndlng crimped or serpentine portion, a at the desired posit-ion in the body of the spring, with the serpentine crimps oppositely located or at right angles with those at the end so that the two may be readily interwoven, as shown at A in Fig. 4, where the end of one spring is interwoven with the body of an adjacent spring, or. at A, in the same figure, where the end. of a spring is represented as being inter ven with an inner coil of its integral wire;

upper coil of an adjacent being twisted or knotted.

' I have found it ve difiicult 'forn'fi the ordinary securing knot or loop in spiral spring wire that is covered without cutting or tearing the covering B, while with this construction the spring may be wholly formed and ready for interweaving or securing together before the cover is put on, and the cover may, then, be put on and the crimped portions interlocked or woven without any possible danger of injuring the cover. I find this construction very advantageous, for several reasons. First, the crimping may be done with a press, with a punch and dies,

knot or twisted fastening for wires, a much more highly tempered wire may be used,

than would be possible with, the ordinary knotted spring construction. Third, this and with the construct-ion permits of'interweaving the end coils of adjacent springs together firmly, reliably and more readily than ordinary knots or other connections may be formed, thus producing a firm union of parts where it would be impossible toform a closely locked and non rotating twisted connection. Fourth, if desired, the fabric covermay be utilized to stitch through to secure the coils firmly but pliably together where adjacent spring coils meet; and, fifth, with this construction the end, a, of the spring A may be interwoven with a single wire of the adjacent spring, as at A, or it may be made to include a portion of a coil of an adjacent spring, as at A, in Fig. 4, to firmly secure the two surface coils of adjacent springs together, thus forming a reliable surface construction and securing the terminal coils of the springs at the same time and at one op- .eration.

What I claim as new, and desire to secure by Letters Patent of the United States, is:

1. In spiral spring bed construction, the ends of the spring wire crimped to form several directly oppositely disposed bends in one direction, and the adjacent portion of the body of the wire crimped to form several directly oppositely disposed bends at right angles with those in the end of the wire and the two interwoven to securely unite them for surface construction.

2. In spiral spring bed bottom construction, the ends of theouter coils of springs crimped to form several directly oppositely disposed bends in one direction, and the connecting portions of thebodies of adjacent I springs crimped to form several corresponding bends at right angles therewith, and all interwoven to securely unite the parts for surface construction.

3. In spiral spring bed bottom construction, a portion of the ends and bodies of adjacent coils crimped to form several serpentine direct bends in each at right angles with those in the other, and the oppositely disposed serpentine portions interwoven to form substantial surface construction.

4:. In spiral spring bed construction, the

'ends of the outer coils of the spring wires crimped to form several directly oppositely disposed bends in one direction, the adjacent portion of the body of the wire crimpedto form several directly oppositely disposed bends at right angles with the bends in the end, and a fabric covering drawn over the coils after they have been crimped and retempered, and the crimped portions interwoven to form surface construction, as and for the purpose set forth.

Signed at Grand Rapids Michigan J anuary 25 1909.

FRANCIS KARR. In presence of I. J. CILLEY, GEORGE Tooeoon.