US2631840A - Coil spring construction - Google Patents
Coil spring construction Download PDFInfo
- Publication number
- US2631840A US2631840A US73163A US7316349A US2631840A US 2631840 A US2631840 A US 2631840A US 73163 A US73163 A US 73163A US 7316349 A US7316349 A US 7316349A US 2631840 A US2631840 A US 2631840A
- Authority
- US
- United States
- Prior art keywords
- spring
- coil
- coil spring
- loop
- spiral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
- F16F3/04—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C23/00—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases
- A47C23/04—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled
- A47C23/043—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled using wound springs
- A47C23/0433—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using springs in compression, e.g. coiled using wound springs of different resilience
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F3/00—Coiling wire into particular forms
- B21F3/12—Coiling wire into particular forms of interconnected helical springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F35/00—Making springs from wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F35/00—Making springs from wire
- B21F35/003—Multi-filament springs, e.g. made of stranded, braided, cable or multi-filament material
Definitions
- the invention relates to a coil spring construction. It more particularly relates to a coil spring for cushions, mattresses and the like adapted to compress much more readily during the first stages of loading than during the final stages of loading.
- a principal object of the invention is to provide a coil spring which is particularly adapted for use in an article of furniture serving in two capacities, such as a davenport-bed.
- Another object of the invention is to provide a coil spring construction of simple manufacture which is endowed with heavy load carrying ability during a portion of the compression cycle.
- a further object of the invention is to provide an integral double coil spring having the inner coil of a shorter length than the outer coil.
- Still another object of the invention is to provide a double coil spring which readily compresses under a light load yet readily supports a heavy e load.
- Fig. 1 is a side elevation of the new coil spring.
- Fig. 2 is a sectional view taken along lines 22 of Fig. 1 looking in the direction of the arrows.
- Fig. 3 is a sectional view taken along lines 3-3 of Fig. 1 looking in the direction of the arrows.
- Fig. 4 is a plan view of the sprin looking down on the top.
- the outer coil of the spring starts with a fiat base I which continues upwardly in a spiral section 2 to form the body of the spring.
- the upper end of the outer coil ends in a circular loop portion 3 with the extreme end of the spring pointing both inwardly and downwardly at 4.
- the base I is actually formed with a double circular loop (see Fig. 2) having the inner loop extending upwardly in a spiral 5 to form the inner coil spring.
- the inner spiral 5 ends in a circular closed loop portion 6.
- the loop portion 6 ends with a portion 1 pointing inwardly and downwardly.
- the inner spring is considerably shorter than the outer spring and the inner coil is of enough smaller diameter than the outer coil to allow it to compress without interference with the outer coil.
- the loops 3 and 5 are in planes parallel with the base I.
- Fig. 4 illustrates the appearance of the spring coil as viewed from above.
- Thefiat circular loop 3 of coil 2 terminates in an inwardly and downwardly pointing section 4 and at this elevation the spring comprises only the outer coil.
- the mattresses or cushions in these combination pieces should have the property of being comfortable and hence compressible under a light load when used for sleeping purposes wherein the load is distributed over a relatively large area and also of being comfortable and readily capable of supporting a heavy load concentrated upon one spot as when they are sat upon or used in the manner of a chair.
- the instant construction fulfills these requirements by virtue of the coaction of the various parts of the single spring so designed that some compression readily occurs under a light load yet even a heavy or concentrated load will fail to crush or completely compress the spring.
- the spring of the invention it will be generally preferable to wind the spring from a single strand of suitable material such as conventional spring wire. It will be apparent that if desired the coil diameter, and length of the inner coil may be varied relative to the outer coil to give a spring having the desired characteristics under various loading conditions. It will be further apparent that the coils need not bear the relation shown in the drawing in that the inner and outer coils may run parallel instead of intersecting or any variation therebetween depending on the pitch and the number of coils desired in each section of the spring. If, for any reason, desirable the inner spring may be assembled separately and welded to the outer spring to form an integral assembly.
- suitable material such as conventional spring wire.
- a double coil spring formed from one continuous length of wire the combination which includes two spiral nested coils with one of said coils extending in a clockwise direction and the other coil extending in a counterclockwise direction to allow up and down movement of each coil without interference from the other with the inner coil of shorter length than the outer coil, a flat base double loop portion consisting of an outer loop and an inner loop integral with the spiral coils, and a top closed loop for each of the spiral coils with the ends of the wire bent inwardly and downwardly.
- a double coil spring structure which includes two nested spiral coils with one of said coils extending in a clockwise direction and the other coil extending in a counterclockwise direction with the inner coil of shorter overall length than the outer coil, an integral base portion for the spiral coils comprising a continuous double loop with one loop inside the other, and top closed loops terminating the spiral coils at the upper end with the ends of the loops bent inwardly and downwardly, said loop portions being in planes parallel to the plane of the base.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Springs (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Description
March 17, 1953 G. H. BUGENHAGEN COIL SPRING CONSTRUCTION Filed Jan; 27, 1949 Patented Mar. 17, 1953 UNITED STATES PATENT OFFICE COIL SPRING CONSTRUCTION George H. Bugenhagen, Minot, N. Dak.
Application January 27, 1949, Serial No. 73,163
2 Claims.
The invention relates to a coil spring construction. It more particularly relates to a coil spring for cushions, mattresses and the like adapted to compress much more readily during the first stages of loading than during the final stages of loading.
A principal object of the invention is to provide a coil spring which is particularly adapted for use in an article of furniture serving in two capacities, such as a davenport-bed.
' Another object of the invention is to provide a coil spring construction of simple manufacture which is endowed with heavy load carrying ability during a portion of the compression cycle.
A further object of the invention is to provide an integral double coil spring having the inner coil of a shorter length than the outer coil.
Still another object of the invention is to provide a double coil spring which readily compresses under a light load yet readily supports a heavy e load. I
Other objects and advantages will become apparent during the course of the following description which taken in conjunction with the annexed drawing illustrates a way of putting the invention into effect, such disclosed means illustrating but one of various ways of carrying out the principle of the invention.
In the drawing:
Fig. 1 is a side elevation of the new coil spring.
Fig. 2 is a sectional view taken along lines 22 of Fig. 1 looking in the direction of the arrows.
Fig. 3 is a sectional view taken along lines 3-3 of Fig. 1 looking in the direction of the arrows.
Fig. 4 is a plan view of the sprin looking down on the top.
Referring to Fig. 1 the outer coil of the spring starts with a fiat base I which continues upwardly in a spiral section 2 to form the body of the spring. The upper end of the outer coil ends in a circular loop portion 3 with the extreme end of the spring pointing both inwardly and downwardly at 4. The base I is actually formed with a double circular loop (see Fig. 2) having the inner loop extending upwardly in a spiral 5 to form the inner coil spring. The inner spiral 5 ends in a circular closed loop portion 6. The loop portion 6 ends with a portion 1 pointing inwardly and downwardly. As shown the inner spring is considerably shorter than the outer spring and the inner coil is of enough smaller diameter than the outer coil to allow it to compress without interference with the outer coil. The loops 3 and 5 are in planes parallel with the base I.
In the sectional view of Fig. 2 the relation be- 2 tween the outer spiral portion 2 and the inner spiral portion 5 is seen in greater detail. Spiral 2 is seen running downwardly into the outer base loop portion and inner spiral 5 extends downwardly into the inner base loop portion.
In the sectional view of Fig. 3 the manner in which the inner spring terminates is shown in detail. Outer spiral section 2 continues upward at this section while inner coil 5 terminates in a flat loop 6 having an inwardly and downwardly extending end I.
Fig. 4 illustrates the appearance of the spring coil as viewed from above. Thefiat circular loop 3 of coil 2 terminates in an inwardly and downwardly pointing section 4 and at this elevation the spring comprises only the outer coil.
In the operation of a coil sprin of the described construction it will be apparent that during initial loading of the spring only the outer coil is compressed whereas under a heavy or concentrated load both the inner and outer spring support the load. This construction allows the provision of a spring which is suitable for use in cushions, mattresses, and the like having the combined properties of a soft cushion easily compressible under light loads as well as the property of being capable of supporting heavy or concentrated loads. This feature is particularly desirable for certain articles of furniture serving a dual purpose such as daybeds and the like. The mattresses or cushions in these combination pieces should have the property of being comfortable and hence compressible under a light load when used for sleeping purposes wherein the load is distributed over a relatively large area and also of being comfortable and readily capable of supporting a heavy load concentrated upon one spot as when they are sat upon or used in the manner of a chair. The instant construction fulfills these requirements by virtue of the coaction of the various parts of the single spring so designed that some compression readily occurs under a light load yet even a heavy or concentrated load will fail to crush or completely compress the spring.
In assembling the spring of the invention it will be generally preferable to wind the spring from a single strand of suitable material such as conventional spring wire. It will be apparent that if desired the coil diameter, and length of the inner coil may be varied relative to the outer coil to give a spring having the desired characteristics under various loading conditions. It will be further apparent that the coils need not bear the relation shown in the drawing in that the inner and outer coils may run parallel instead of intersecting or any variation therebetween depending on the pitch and the number of coils desired in each section of the spring. If, for any reason, desirable the inner spring may be assembled separately and welded to the outer spring to form an integral assembly. It will be apparent that the construction described afiords advantages over the use of two separate springs one of which is housed within the other due to the fact that no provision need be made for holding the one spring in alignment with the other as by use of special clips, a burlap container, or the like. In the instant case by turning the upper ends of the spring inwardly and downwardly the two springs are enabled to compress readily without interfering with each other. While a circular coil or loop is illustrated and described it is within the purview of the invention for the coils to take on oval or modified ellipsoidal shape.
I claim:
1. In a double coil spring formed from one continuous length of wire, the combination which includes two spiral nested coils with one of said coils extending in a clockwise direction and the other coil extending in a counterclockwise direction to allow up and down movement of each coil without interference from the other with the inner coil of shorter length than the outer coil, a flat base double loop portion consisting of an outer loop and an inner loop integral with the spiral coils, and a top closed loop for each of the spiral coils with the ends of the wire bent inwardly and downwardly.
2. In a double coil spring structure the combination which includes two nested spiral coils with one of said coils extending in a clockwise direction and the other coil extending in a counterclockwise direction with the inner coil of shorter overall length than the outer coil, an integral base portion for the spiral coils comprising a continuous double loop with one loop inside the other, and top closed loops terminating the spiral coils at the upper end with the ends of the loops bent inwardly and downwardly, said loop portions being in planes parallel to the plane of the base.
GEORGE H. BUGENHAGEN.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 516,360 Turton Mar. 13, 1894 653,155 Tilden July 3, 1900 1,254,314 DArcy Jan. 22, 1918 1,963,055 Powers June 12, 1934 FOREIGN PATENTS Number Country Date 20,533 Great Britain June 15, 1911 of 1910 481,623 Germany Aug. 26, 1929
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US73163A US2631840A (en) | 1949-01-27 | 1949-01-27 | Coil spring construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US73163A US2631840A (en) | 1949-01-27 | 1949-01-27 | Coil spring construction |
Publications (1)
Publication Number | Publication Date |
---|---|
US2631840A true US2631840A (en) | 1953-03-17 |
Family
ID=22112097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US73163A Expired - Lifetime US2631840A (en) | 1949-01-27 | 1949-01-27 | Coil spring construction |
Country Status (1)
Country | Link |
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US (1) | US2631840A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2743790A (en) * | 1953-03-27 | 1956-05-01 | Goodyear Tire & Rubber | Brake with soft steel return spring |
DE1164760B (en) * | 1962-03-13 | 1964-03-05 | Peddinghaus Paul Ferd Fa | Buffer spring for releasing a single-turn clutch, especially for machine tools |
US4609186A (en) * | 1982-06-28 | 1986-09-02 | Spuhl Ag | Mattress spring core with open ended coils |
US4639957A (en) * | 1985-08-27 | 1987-02-03 | Leggett & Platt, Incorporated | Bedding and seating product having double twist coil spring and method and apparatus for manufacturing the same |
US4682394A (en) * | 1985-08-27 | 1987-07-28 | Leggett & Platt, Incorporated | Bedding and seating product having double twist coil spring and method and apparatus for manufacturing the same |
US4817924A (en) * | 1983-09-20 | 1989-04-04 | Alan Thoenen | Spring core for a mattress |
WO1998025503A1 (en) * | 1996-12-10 | 1998-06-18 | A Harrison (Bedding) Limited | Spring units |
WO1999030853A1 (en) * | 1997-12-13 | 1999-06-24 | A Harrison (Bedding) Limited | Method and apparatus for forming spring units |
US6375169B1 (en) | 2000-07-28 | 2002-04-23 | Hickory Springs Manufacturing Company | Mattress spring cushion assembly with combination of right-hand and left-hand spring units |
US20100065996A1 (en) * | 2007-01-29 | 2010-03-18 | Bauman Federn AG | Two-layer or multiple-layer compression spring |
WO2010060223A1 (en) | 2008-11-25 | 2010-06-03 | Remex Ag | Apparatus and method for producing springs |
US7908693B2 (en) | 2009-04-14 | 2011-03-22 | Sealy Technology Llc | Coil-in coil springs and innersprings |
CN104196939A (en) * | 2014-09-26 | 2014-12-10 | 无锡市天力五金弹簧厂 | Spring adopting double-layered structure |
USD774818S1 (en) * | 2012-08-22 | 2016-12-27 | L&P Swiss Holding Ag | Coil spring |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US516360A (en) * | 1894-03-13 | tueton | ||
US653155A (en) * | 1900-03-26 | 1900-07-03 | Marshall Tilden | Coil-spring. |
US1254314A (en) * | 1914-10-19 | 1918-01-22 | Frank P D Arcy | Spring-cushion structure. |
DE481623C (en) * | 1927-12-11 | 1929-08-26 | Ernst August Neumann | Spring frame with easily exchangeable padding |
US1963055A (en) * | 1933-08-14 | 1934-06-12 | Powers Spring Corp | Wire spring |
-
1949
- 1949-01-27 US US73163A patent/US2631840A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US516360A (en) * | 1894-03-13 | tueton | ||
US653155A (en) * | 1900-03-26 | 1900-07-03 | Marshall Tilden | Coil-spring. |
US1254314A (en) * | 1914-10-19 | 1918-01-22 | Frank P D Arcy | Spring-cushion structure. |
DE481623C (en) * | 1927-12-11 | 1929-08-26 | Ernst August Neumann | Spring frame with easily exchangeable padding |
US1963055A (en) * | 1933-08-14 | 1934-06-12 | Powers Spring Corp | Wire spring |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2743790A (en) * | 1953-03-27 | 1956-05-01 | Goodyear Tire & Rubber | Brake with soft steel return spring |
DE1164760B (en) * | 1962-03-13 | 1964-03-05 | Peddinghaus Paul Ferd Fa | Buffer spring for releasing a single-turn clutch, especially for machine tools |
US4609186A (en) * | 1982-06-28 | 1986-09-02 | Spuhl Ag | Mattress spring core with open ended coils |
US4817924A (en) * | 1983-09-20 | 1989-04-04 | Alan Thoenen | Spring core for a mattress |
US4639957A (en) * | 1985-08-27 | 1987-02-03 | Leggett & Platt, Incorporated | Bedding and seating product having double twist coil spring and method and apparatus for manufacturing the same |
US4682394A (en) * | 1985-08-27 | 1987-07-28 | Leggett & Platt, Incorporated | Bedding and seating product having double twist coil spring and method and apparatus for manufacturing the same |
JP2001505793A (en) * | 1996-12-10 | 2001-05-08 | ア・ハリソン(ベッディング)リミテッド | Spring unit |
WO1998025503A1 (en) * | 1996-12-10 | 1998-06-18 | A Harrison (Bedding) Limited | Spring units |
US6668406B2 (en) | 1996-12-10 | 2003-12-30 | A Harrison (Bedding) Limited | Spring units |
WO1999030853A1 (en) * | 1997-12-13 | 1999-06-24 | A Harrison (Bedding) Limited | Method and apparatus for forming spring units |
US6375169B1 (en) | 2000-07-28 | 2002-04-23 | Hickory Springs Manufacturing Company | Mattress spring cushion assembly with combination of right-hand and left-hand spring units |
US20100065996A1 (en) * | 2007-01-29 | 2010-03-18 | Bauman Federn AG | Two-layer or multiple-layer compression spring |
WO2010060223A1 (en) | 2008-11-25 | 2010-06-03 | Remex Ag | Apparatus and method for producing springs |
US20110226380A1 (en) * | 2008-11-25 | 2011-09-22 | Remex Ag | Apparatus and Method for Producing Springs |
US9038432B2 (en) | 2008-11-25 | 2015-05-26 | Spuhl Gmbh | Apparatus and method for producing springs |
US7908693B2 (en) | 2009-04-14 | 2011-03-22 | Sealy Technology Llc | Coil-in coil springs and innersprings |
USD774818S1 (en) * | 2012-08-22 | 2016-12-27 | L&P Swiss Holding Ag | Coil spring |
CN104196939A (en) * | 2014-09-26 | 2014-12-10 | 无锡市天力五金弹簧厂 | Spring adopting double-layered structure |
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