US1982030A - Spring mounting - Google Patents

Description

Nov. 27, 1934. M. STADTLER 1,982,030

SPRING MOUNTING Original Filed July 18, 1932 Patented Nov. 27, 1934 SPRING MOUNTING Mathias Stadtler, Flushing, N. Y.

Application July 18, 1932', Serial No. 623,080 Renewed October 3, 19.34

6 Claims.

The present invention relates to a mounting for coiled springs and the like which are used for spring cushions, box springs, etc.

One of the objects of this invention is to provide a means whereby the springs may be easily and quickly mounted or replaced and held in the desired position with respect to each other.

Another object is to provide means for preventing the springs from shifting relative to each other when the same are in place, this means preferably comprising metallic strips which interlace one with the other and with the spring, to prevent shifting thereof. This means does not require the use of auxiliary holding means between the interlacing strips and the springs as has been common practice with prior devices.

Another object of this invention resides in the means-for securing the: metallic strips at the ends thereof against shifting movement relative to the frame of the cushion or box spring orthe like.

Another object of this invention resides in the means for attaching one end of the spring to the fabric covering for the cushion. This means may be sewed to the fabric cushion; prior toattachingthe spring thereto which means permits the spring to be readily attached or replaced.

Another object of this invention is to provide a mounting which permits coils to be readily replaced without special tools and without disturbing other springs or their mountings.

Still another object of this invention is to provide coils having small turns at the lower end thereof, and so construct the last coil as to permit the same to act as a locking means forholding the coils in place after they have been-turned intoposition.

Other objects of this invention will appearhereinafter as the description thereof proceeds, the novel features, arrangements, and combina- 403 tions being clearly pointed out in the appended claims.

In the drawing: Fig. 1 is a perspective view illustrating the means for holding the lower end of a spring from lateral shifting. movement;

Fig. 2 is a perspective view looking from beneath the upper fabric' covering for a. cushion. or thelike showing; themanner in which the upper 5 end of the. spring. is secured thereto; the. view be-- ing. one leaking from beneath the fabric coverin Fig. 3- is a'bottom isometric view showing the manner in which the ends of the strips are secured to the frame of the cushion or the'lik'e;

Fig. 4 is a cross-section taken substantially on the line 44' of Fig. 3;

Fig. 5 shows a modification of my invention; and

Fig. 6 shows a modified lacing strip.

My invention contemplates an eflicient yet Sim ple method of mounting springs so that they are held in proper relation with each other' a-tall times and yet are easily removed or replaced without special tools. In- Fig. 1, I have shown ameans for preventing lateral shifting movement of the lower end of such a spring. The spring is designated by the reference numeral 1, and is of the general type of spring, used in this construction, but diifers somewhat from the general type of coil spring in that the lower end thereof forms a complete loop. This is accomplished by making a hook 2 onone end of the lower terminal of the coiled spring, and bending the last coil in a reverse direction so as toprovide a U- shaped portion 3 which can be engaged by"the end of the hook, and due to' the resiliency of the spring form substantially a completely closed coil at the bottom of the spring to prevent this portion from spreading, and'to provide a: locking means as will hereinafter appear.

In order to prevent lateral shifting movement of the lower end of the coiled spring, I provide lacing strips 4' which are identical in construction and are secured at the ends thereof tothe frame indicated by the reference numeral 5- in- Fig. 3. Each of these strips 4- is formedsubstantiallyi'n the shape illustrated with lower recesses 6 and upper recesses 7. The recesses 7-,have relatively fiat bottom portions and the recesses 6 are suostantially V-s'hape'd in crosssection as is clear from an inspection of Figs. 1 and 3. 'The lacing strips 4 are provided with a series of perforations 8 and 9 respectively formedby punching orthe like, and in the forming of these perforations, small projections 10 and 11- are-formed adjacent theperforations. Nails may be driven through any of these perforationsbut' preferably through theperforations 9 as is illustrated in Figs. 3' ancl" 4:, the nails being designated by the referencenumeral 12. Whenthe nail is driven into the wood, the projections 10 have a tendency to dig intothewood and prevent shifting movement of the strip itself.

As will, be clear from an inspection of Fig. 1,- oneof thestrips 4 is arranged over the lowermost coil while the other strip is arranged under the coil and the stripwh'ich passes over the coil also extends under the other ofthe strips whichpasses beneath thecoil so that thereis an interlocking which prevents lateral shifting movement of the lower end of the coil as the portions of the lower coil of the spring arrange themselves in the recesses 6 and '7 and this prevents the strips from moving in the direction of their length, or conversely prevents the springs from moving in the direction of the lengths of the respective strips, thereby effectively holding the coil in desired position.

The upper end of the coil is formed as in the usual construction with the free end 13. The fabric covering 14 which covers the coils and is arranged over the same has a pocket 15 in the shape of a spiral secured to the upper surface thereof by the stitching 16, the pocket being formed by a strip of material doubled upon itself and sewed to the fabric 14 as illustrated in the drawing. Stitching 17 closes one end of the pocket 15, but

the opposite end 18 of the pocket is open for the reception of the end 13 of the coil spring.

The fabric covering is arranged over the frame with the pockets substantially directly above the points of intersection of strips 4.

It will be noted that the spring 1 has a hooked end portion 2 extending in the same general direction as the free end portion 13, and when the spring is to be arranged in operative position, the hook is released from the loop 3, and the spring is compressed and inserted between the upper fabric and the closed strips 4. The spring is rotated to bring the end 13 into the pocket 15 and as the operator continues to rotate the spring to fully position the free end 13 within the pocket 15, he also guides the lower free end of the spring alternately above and below the strips 4 so that eventually when'the end 13 of the spring is fully within the pocket 15, the other or lower end of the spring is completely interlaced with the strips. In order to hold the spring in this proper operative relation, the hooked end 2 is hooked through pocket 15. Furthermore, since a portion of the loop 3 engages the edge of one of thestrips 4, there can be practically no turning movement of the spring. I

It will be noted that the lower portion of the spring is substantially smaller than the upper portion thereof, thereby reducing the amount of wire that is necessary but yet providing an efiicient mounting for the spring as compared with previous constructions, as the metal strips 4 act as an additional support for the lower end of the spring and are designed to hold the lower end of the spring against twisting movement out of the normal plane. With previous constructions, it has been common practice to use springs with large bases and large tops in order that the proper balancing of the spring could take place. Furthermore, since no auxiliary means is necessary with my construction, it is possible to bring the lower coil of the spring closer to the overv lapping portions of thestrips so as to make practically a solid base within the lower coil. Since.

the turnsof the coil come very close to the overlapping portions of the strips, it is highly improbable that there will be any lateral shifting movement of the spring relative to the strips especonstruction for a spring can be removed very quickly and without the necessity of disturbing other springs adjacent thereto. If a spring breaks, the fragments can be removed very quickly and a new spring inserted without much difficulty. In Fig. 5 I have shown another mounting for a spring in which there are a pair of corrugated cross members 19 and 20 which overlap in somewhat the same manner as do the strips 4 in Fig. 1. The spring indicated by the reference numeral 21 is shaped similarly to the spring 1 in Fig. '1, and has the lower loop thereof formed with a portion 22 which extends across the overlapping portions of the strips 19 and 20 on the lower side thereof with the end 23 extending upwardly, in the space formed between the adjacent intersecting edges of the strips19 and 20. The single coil of the spring shown in the drawing is arranged very close to the upper surface of the overlapping strips 19 and 20, and cooperates with the portion 22 to hold the projection 23 in operative position at all times, whereby the strips are firmly held together and the spring held in desired relation with the strips.

Fig. 6 shows a metal lacing strip 24 provided with a felted upper surface '25 which prevents clicking of the metal strips against each other and the squeaking which may accompany. the use of metal strips without such felted surfaces. These felted surfaces also prevent undue metallic sound between the coils of the spring and the adjacent strips. The strip is used inthe same manner as shown in Figs. 1 and 5 or with any other form of spring desired such as where the spring contacts wholly with the upper sides of the metallic strips in which these felted surfaces project upwardly. If desired, both sides of the strip may be felted.

It is obvious that various changes can be made in the construction of the various parts without departing from the spirit of this invention or Having thus fully described my invention, what v I I claim as new and desire to obtain by Letters Patent is: b

1. In a spring construction, the combination with a coil springhaving free end portions at the upper and lower sidesthereof, of a support for the lower end of said spring, a covering for the upper end of said spring, anda curved pocket secured to said covering for receiving the adjacent free end of said spring, the lower end of said spring having the free end thereof extending in the same general direction as the free end at the upper side of said spring, means on said support for receiving said last mentioned end, andmeans forming part of said spring for releasably retaining said spring in operative position against reverse rotation after the ends thereof have been moved into their respective rea hook on the lower free end of said coil adapted to interlock with a reversely bent portion of said coil adjacent to said free end.,

14,5, ceiving means, said means for retaining said. spring releasably in operative position comprising 1 2'. In a spring construction, the combination with a supporting means for a spring, of a covering for said spring, a coil spring having free end portions at the upper and lower ends thereof extending in the same direction about the axis of said spring, and an annular pocket secured to said covering receiving one free end of said spring, said supporting means having spaced spring-engaging portions extending substantially concentrically about the axis of said spring, and said lower coil of said spring extending over and under said spring-engaging portions and through the spaces therebetween.

3. In a spring construction, the combination with a supporting means for a spring, of a covering for said spring, a coil spring having free end portions at the upper and lower ends thereof extending in the same direction about the axis of said spring, an annular pocket secured to said covering receiving one free end of said spring, said supporting means having spaced spring-engaging portions extending substantially concentrically about the axis of said spring, said lower coil of said spring extending over and under said spring-engaging portions and through the spaces therebetween, and means for preventing reverse rotation of said coil after said coil is in operative position with respect to said covering and said support, comprising interlocking means for closing the lower coil to form a continuous loop which prevents the reverse movement of said free end through said openings.

4. In a spring construction, the combination with a supporting means for a spring, of a covering for said spring, a coil spring having free end portions at the upper and lower ends thereof extending in the same direction about the axis of said spring, an annular pocket secured to said covering receiving one free end of said spring, said supporting means having spaced springengaging portions extending substantially concentrically about the axis of said spring, said lower coil of said spring extending over and under said spring-engaging portions and through the spaces therebetween, and means for preventing reverse rotation of said coil after said coil is in operative position with respect to said covering and support, comprising a hook formed on the free end of said coil, and a reversely bent section of said spring forming a loop with which said hook interlocks when the coil is in place, whereby to prevent separation of said coil from its supporting means except if and when desired.

5. A device as set forth in claim 2 in which the supporting means is formed by a pair of overlapping strips with the coil supporting portions of said strips spaced outwardly from the overlapping portions thereof with spaces therebetween through which portions of the coil extend, other portions of the coil lying on opposite sides and in contact with adjacent supporting portions of said strips.

6. A device such as set forth in claim 2 in which the supporting means comprises a plurality of transversely corrugated strips overlapping substantially centrally of the adjacent coil of said spring, and in which the portions of said coil lie in said transverse corrugations on opposite sides of adjacent portions of said strips, whereby when a load is placed on the spring, the strips extend and exert a force on said coil and prevent the same from shifting its position or rotating.

MATHIAS STADTLER.

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