US2639763A - Wire spring - Google Patents

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US2639763A
US2639763A US117840A US11784049A US2639763A US 2639763 A US2639763 A US 2639763A US 117840 A US117840 A US 117840A US 11784049 A US11784049 A US 11784049A US 2639763 A US2639763 A US 2639763A
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resting
wires
spring
wire
portions
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US117840A
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William H Neely
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Universal Wire Spring Co
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Universal Wire Spring Co
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/02Seat parts
    • A47C7/28Seat parts with tensioned springs, e.g. of flat type
    • A47C7/30Seat parts with tensioned springs, e.g. of flat type with springs meandering in a flat plane

Description

y 26, 1953 w. H. NEELY 2,639,763
WIRE SPRING Filed Sept. 26, 1949 2 Sheets-Sheet l 'TT1E 1 FEE. Fiai v F1514.
. IN V EN TOR. WILL mm H NEELY y 1953 w. H. NEELY 2,639,763
WIRE SPRING Filed Sept. 26, 1949 2 Sheets-Sheet 2 INVENTOR. WILLIHH H NEELY Patented May 26, 1953 UNITED STATES PATENT OFFICE 2,639,763 I WIRE SPRING Application September 26, 1949, Serial No. 117,840
Claims.
This invention relates to flat springs of sinuous or similar shape such as used for seats, backs of seats, flat cushions, etc. Springs of this type when attached to or mounted on frame structures develop in their seating or resting portions, particularly when loaded, excessive stiff areas and excessive yielding areas, caused by either excessive or insufficient bending stresses, the excessive stiif areas being generally present in springs rigidly secured to a frame structure, and excessive yielding areas being generally present in springs pivotally secured to a frame structure, though both excessive stiff or excessive yielding areas may be present in springs rigidly or pivotally secured to a frame structure. This undesired reaction of this type of flat spring has partly been overcome by ofisetting some of the convolutions of the springs with respect to the general plane of their seating or resting portions, a rather costly and often insuificient procedure in manufacturing these flat springs.
The primary object of the present invention is the provision of a fiat, substantially sinuously corrugated or zigzag shaped wire spring in which in certain areas of the spring the cross wires connecting substantially parallelly arranged loops are spaced differently from the cross wires in other areas of such spring to increase and reduce in these certain areas the stiffness and yielding action of the spring and provide for proper seating and resting comfort in seat and back structures embodying these springs.
Stiffness and yielding action of predetermined areas of fiat, sinuously or zigzag shaped wire springs, furthermore, depend on the diameter of the loops in these areas, which loops generally control the angular relation of the loop-connecting cross wires with respect to the axis of the spring.
Another object of the present invention, therefore, is the provision of a fiat, substantially sinuously corrugated or zigzag shaped wire spring in which in certain areas of the spring the cross wires connecting the substantially parallelly arranged loops are spaced differently from the cross wires of other areas of such spring, and in which in said certain areas the loops have diameters different from the loops of the other areas to control the angular relation of the loopconnecting cross wires with respect to the axes of the springs, and properly increase and reduce in these certain areas stiffness and yielding action of the spring for proper seating and resting comfort in seat and back structures embodying these springs. 7
In addition, the invention has other marked improvements and superiorities which radically distinguish it from presently known structures. The improvements or superior characteristics embodying certain novel features of construction are clearly set forth in the appended claims, and several preferred embodiments of the invention are hereinafter shown with reference to the accompanying drawings forming part of the specification.
In the drawings:
Fig. l is a plan view of a fragmentary portion of the seating or resting portion of a wire spring formed from zigzag shaped wire having equally sized loops throughout and a portion in which the distance between adjacent loop-connecting cross wires is shorter than the distance between adjacent cross Wires in other portions of the resting portion of said zigzag shaped wire;
Fig. 2 is a plan View similar to Fig. 1 with the exception that the diameter of the wire loops in the portion referred to above is smaller than the diameter of the loops in the other portions of the zigzag shaped wire spring;
Fig. 3 is a plan View of a fragmentary portion of the seating or resting portion of a zigzag shaped wire spring, including a portion in which the distance between adjacent loop-connecting cross wires is longer than the distance between the cross wires in other portions of the resting portion of said zigzag shaped wire spring;
Fig. 4 is a plan view of a fragmentary portion of the seating or resting portion of a zigzag shaped wire spring including definite portions in which the distance between adjacent, loopconnectingcross wires is either shorter or longer than the distance between adjacent cross wires in other portions of the resting portion of said zigzag shaped wire spring;
Fig. 5 is a perspective view of a wire spring member embodying a resting surface including a portion having relatively decreased stiffness with respect to other portions of the wire spring member; and
Fig. 6 is a perspective view of a wire spring member embodying a resting surface including portions having relatively increased and decreased stiifness with respect to other portions of the wire spring member.
Referring now more particularly to Figs. 1 through 4 of the drawings representing fragmentary sections of the seating or resting portions of sinuously corrugated or zigzag shaped wire springs commonly used in back rest and seat constructionsfor upholstered furniture and automobile seat structures, reference numeral 2 denotes a steel wire bent to sinuous or zigzag shape so that the resting portion 3 of the wire structure includes loops 4 extended substantially parallel to each other and connected with each other by cross wires 5. The thus constructed resting portion 3 (see Fig. 1) which embodies equally-sized loops throughout; includes a-portiorr 6 in which the distance" between adjacent cross wires 5 is shorter than the distance between adjacent cross wires 5 in portions 1 and 8 of resting portion 3 positioned adjacent to portion 6. As the spacing of cross wires 5' in portion 6closer than the spacing of cross wires 5 in portions Land 8- decreases the relative stiffness of portion 6 with;
respect to the stifiness of portions 1 and 8-, proper location of portions similar to portion 6 in the resting portion of a springstructure'affords'a highly practical means to provide for proper seating and resting comfort in seat and back rest spring structures.
The seating and resting comfort of the above described resting portion of a spring structure can additionally be'improved' by decreasing the diameter of 'the loops of the portion 6 so that-the cross wires 5' extend substantially at a right angle to the-axis of the resting portion. Such a structure is' disclosed in Fig. 2'in which'the resting portion 9 embodies a portion 10 having a'dist'ance between adjacent cross wires I I shorter than the distance between adjacent cross wires II in portions I2 and I4, positioned adjacent to'po'rtion In, and having loops [5 which are smaller in diameter than loops IS in the portions '12 and It, all for the purpose of arranging the cross wires II in portion 10 at a substantiallylright angle to the axis of resting portion?! and increasing the relative length of cross wires 1 l with respect to cross wires H to decrease the torsional resistance of cross Wires I with respect to'the-torsion'al resistance of cross wires l I Different spacing ofthe cross wires of sinuously corrugated or zigzag shaped wires can also (see Fig. 3) be utilized to locally increase the stiffness of the seating portion of.a wire'structure. In this case the 'res'tingportion' "1.3 of the wire structure includes a portion '11 -in which 'the distance between adjacent cross wires iBis longer than the distance between adjacent cross wires 18 in portions "I 9 and 2.6, positioned adjacent toportion "H.
' For utmost seating and resting comfort of the resting portion of a 'zigzag shaped wire spring structure, difierent spacing of the cross wires 01' the spring structure can be used for locally increasing and decreasing the stifin'ess of theresta ing surface as shownin'F'igj 4. "In this case the resting portion 2| of'the wire structure includes portions 22- and 23 having a distance between adjacent cross wires" 24 in portion 22 shorter than the distance between the normally spaced cross wires 24 'of thespring structureyand in which the distance of the adjacent cross wires' 24" in portion 23 is longer than ,the'distance'between adjacent crosswires' 24 in portion22 andthedistancebetween the normally vspacedcross wires" 2'4 of-the spring structure.
In addition toa controlof seatingand resting comfort on the resting portions of zigzag-shaped wire spring structures, different spacing of the cross wires of the wire spring structure can be used in the supporting portions of these spring structures, which generally support the spring structure in elevated position on openframe structures or similar devices. Thisisdisclosedin the wire springs shown Figs. Sand '6. lin -these 4- figures spring structure 25 (see Fig. 5) embodies a zigzag-shaped supporting or resting portion 26 including a portion 21 with more closely spaced loop-connecting cross wires 28 than the normally spaced loop-connecting cross wires 28 of the resting portion 26, and a portion 29 with more widely spaced loop-connecting cross wires 28 than said cross wires "28'. The thus constructed resting a rearwardly and downwardly extended support- :ing arm 30 which has integrally extended therefrom a forwardly extended arm 3! adapted to be u'sedfor securing said latter arm to the front rail of a'frame (not shown) and has integrally extended fromits rear end a forwardly inclined :supporting arm'32adapted to be used for securing said resting portion to the rear rail of a frame (not --'sh'own). "'As shown, the rearwardly and downwardly inclined extended supporting arm 30 of spring structure 25 includes a portion 33 having its loop-connecting cross wires 34 spacedmore closely with respect to each other than "the other loo -connecting cross wires 3 ofisa'id-arm to' decrease its' stiffness and increase its yielding action," and the 'forwar'dly inclined supporting arm 32in'cludes a; portion35 having'its' loop-connecting'cross' wires 3% spacedwider with respect to each other than the other loop-connecting cross wirestfi' of said arm' toincrease its stiffness and decrease its yieldin action, all forthe purpose of proper control of -the-spring structure for proper comfort and'yi'elding action'under load.
Spring structure 37 ('seeFig'. 6)- is-substantially identical in general outline with spring structure 25 with the exception that z'igzag shaped supporting or 'r'estingfportionta has integrally extended 'fromits rear end an upwardly and rearw'ardly extendedfa'rm 39. This spring structure includes in the seating 'or' resting portion 38. portions 40 andll" h'avingi'their loop-connecting cross wires 42' and *42 spaced differently to increase and decrease'stiflness and decrease and increase the yi'elding'a'ction in portions'flil and 4| In addition "spring structure 31 includes in its upwardly and rearwardlyextended arm '39 a portion" l3"having' its" lo'op connecting cross wires 44 spaced more widely'with respect to each other than the other loop-connecting cross wires, 'to increase' its stifiness' ariddecrease its yielding action.
'The shown and described location of areasof decreased and increased sti'finess and. yield in sinuouslycorrugated springs: -is not necessarily restricted to the structures disclosed and described, same being merely.- given by way ofexample of the invention.
Having thus describedmy-invention; what I claimis:
1. An integral, elongated wire spring forseat structures includinga i fiat, sinuously 'corrugated, resting portion and supporting-means for said resting-portion extended from opposite "ends thereof said: supporting portion embodying successive left and right-handedloops connected by cross wire members'spaced'irom each' other a predetermined distance-andother successive left and right handed'loops-connected'by cross-wire members spaced from eachother a predetermined distance difierent from said first distance to. provide-a resting portion -including-areas of different yield to loads placed-thereon.
.2. An-integral, elongated wire spring for-seat structures including a flat; sinuously corrugated, restingpportion and :supporting means for said resting portion integrally extendedtromaoppc:
site ends thereof, said resting portion embodying successive left and right handed loops connected by cross wire members spaced from each other a predetermined distance and other successive left and right handed loops connected by cross wire members spaced from each other a predetermined distance shorter than said first distance to provide the resting portion with a localized area more readily yielding to loads placed thereon than other areas of such resting portion.
3. An integral, elongated wire spring for seat structures as described in claim 2, wherein the more readily yielding area of the resting portion is arranged near its rear end portion.
4. In an integral, elongated wire spring for seat structures, a flat, sinuously corrugated resting portion and supporting arms for said resting portion extended from opposite ends thereof, said resting portion embodying successive left and right handed loops connected by cross wire members, said corrugated resting portion including areas, each of which has its connecting cross wire members spaced equally from each other and differently from the connecting cross wire members of other areas.
5. In an integral, elongated wire spring for seat structures, a flat, sinuously corrugated, resting portion and sinuously corrugated, supporting arms for opposite ends of said resting portion integrally extended therefrom, said resting portion and supporting arms including areas each of which has its connecting cross wire members spaced from each other an equal distance different and shorter than the spacing of the connecting cross wire members of other areas.
WILLIAM H. NEELY.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 401,287 Lytle Apr. 9, 1889 751,147 Caspary Feb. 2, 1904 2,134,371 .Nachman Oct. 25, 1938 2,257,367 Bernstein Sept. 30, 1941 2,279,336 Neely Apr. 14, 1942 2,330,906 Neely Oct. 5, 1943 FOREIGN PATENTS Number Country Date 96,867 Germany May 4, 1898 28,617 Great Britain of 1912
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684844A (en) * 1952-05-31 1954-07-27 American Metal Prod Sinuous type of spring with variable lengths of transverse and longitudinal bars
US2845996A (en) * 1953-10-16 1958-08-05 American Metal Prod Unit sinuous spring and brace rod
DE1121289B (en) * 1956-04-17 1962-01-04 No Sag Drahtfedern Gmbh Wavy curved spring with coils arranged one above the other for upholstered surfaces of seating and reclining furniture or the like.
US3022993A (en) * 1958-06-27 1962-02-27 Ford Motor Co Motor vehicle seat
US3081076A (en) * 1961-03-07 1963-03-12 Saginaw Wire Products Inc Springs for seats and backs
US3244414A (en) * 1964-10-28 1966-04-05 Sinuous spring strip

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE96867C (en) *
US401287A (en) * 1889-04-09 Spring mattress
US751147A (en) * 1904-02-02 Feitz caspaey
GB191228617A (en) * 1912-12-12 1913-07-10 Maurice Henry Bluett New or Improved Spring for use in Upholstering and the like.
US2134371A (en) * 1936-05-09 1938-10-25 Nachman Spring Filled Corp Spring assembly for upholstery
US2257367A (en) * 1938-06-24 1941-09-30 Samuel S Bernstein Wire spring
US2279336A (en) * 1939-02-10 1942-04-14 John C Lincoln Wire spring for cushioned backs of upholstered furniture
US2330906A (en) * 1940-05-17 1943-10-05 Universal Wire Spring Co Wire spring for cushioned seats

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE96867C (en) *
US401287A (en) * 1889-04-09 Spring mattress
US751147A (en) * 1904-02-02 Feitz caspaey
GB191228617A (en) * 1912-12-12 1913-07-10 Maurice Henry Bluett New or Improved Spring for use in Upholstering and the like.
US2134371A (en) * 1936-05-09 1938-10-25 Nachman Spring Filled Corp Spring assembly for upholstery
US2257367A (en) * 1938-06-24 1941-09-30 Samuel S Bernstein Wire spring
US2279336A (en) * 1939-02-10 1942-04-14 John C Lincoln Wire spring for cushioned backs of upholstered furniture
US2330906A (en) * 1940-05-17 1943-10-05 Universal Wire Spring Co Wire spring for cushioned seats

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684844A (en) * 1952-05-31 1954-07-27 American Metal Prod Sinuous type of spring with variable lengths of transverse and longitudinal bars
US2845996A (en) * 1953-10-16 1958-08-05 American Metal Prod Unit sinuous spring and brace rod
DE1121289B (en) * 1956-04-17 1962-01-04 No Sag Drahtfedern Gmbh Wavy curved spring with coils arranged one above the other for upholstered surfaces of seating and reclining furniture or the like.
US3022993A (en) * 1958-06-27 1962-02-27 Ford Motor Co Motor vehicle seat
US3081076A (en) * 1961-03-07 1963-03-12 Saginaw Wire Products Inc Springs for seats and backs
US3244414A (en) * 1964-10-28 1966-04-05 Sinuous spring strip

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