US1245209A

US1245209A - Spiral bed-spring.

Info

Publication number: US1245209A
Application number: US9609516A
Authority: US
Inventors: William E Frank
Original assignee: Foster Brothers Manufacturing Co
Current assignee: Foster Brothers Manufacturing Co
Priority date: 1916-05-08
Filing date: 1916-05-08
Publication date: 1917-11-06
Anticipated expiration: 1934-11-06

Description

W. E. FRANK.

SPIRAL BED SPRING.

APPUCATION FILED MAY8.1916.

Patented N0v 6, 191? "Tm llllllll UNITED STATES PATENT OFFICE.-

WILLIAM E. FRANK, ST. LOUIS, HISSOURI, ASSIGNOR T0 FOSTER BROTHERS MANU- FACTUBING GOMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI,

srman run-seams.

Specification of Letters Patent.

To all whom it may concern: Be it known that I, WILLIAM E. FRANK, a citizen of the United States, residing at St. .Louis, Missouri, have invented a certain new and useful Improvement in Spiral Bed- Springs, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it up ertains to make and use the same. his invention relates to bed springs and spring seats of the type that comprise a plurality of vertically-disposed spiral springs arranged in the same horizontal plane and 'tied. together 'in such a manner that they 1| form a resilient supporting structure.

Structures of the type referred to are usually equipped with a top frame and a bottom frame between which the springs are arranged and to which the top and bottom so coils of the springs at the outer edge of the structure are connected, the top and bottom coils of the intermediate springs either being tied to cross members of said frames C or being tied together by short coiled springs 28 or other suitable tying devices that tendto hold said springs in parallel relation to each other. In view of the fact that the spiral springs constitute the only connection between the top and bottom frames of the 80 structure, there is a tendency for the top frame to move laterally out of vertical alinement' with the bottom frame whenever the load on the top frame is apalied to one edge of same as for example, w en a person 86 sits on one edge of the structure. The result is, that the spiral springs of structures of the character referred to soon become bent or twisted out of shape by the lateral movement imparted to the top framewhen a load 40 is imposed on one edge of the structure.

' The main ob ect of. my invention is to provide a structure of the character referred to which is so designed that --the--top frame cannot move laterally sufficiently with re- 46 lation to the bottom frame to cause the spiral springsto be bent or twisted out of shape objects and desirable features of my invention will be hereinafter pointed out.

Figure 1 of the drawings is a top plan view of a portion of a double cone spiral bed spring constructed in accordance'with my nvention.

Flg. 2 is a vertical cross-sectional view of same, taken on the line 22 of Fig. 1.

Fig. 3 is a vertical cross-sectional view of a single cone spiral bed spring constructed in accordance with my invention.

Fig. 4 is a detail sectional view, taken on the line 4-4 of Fig. 1; and

Fig. 5 is a detail top plan view, illustrating the means used in the bed spring shown 1n Fig. 3 for connecting the truss to the top coils of some of the intermediate springs.

Referring to Figs. 1 and 2 of the drawings, which illustrate one form of my invention, A and B designate the top and bottom frames, respectively, of a spiral bed spring, spring seat or similar structure, and

designates a plurality of vertically-disposed spiral springs that are arranged between said frames, the springs C at the outer Patented Nov. 6, 1917.

edge of the structure having their to and bottom coils connected to the frames and- B and the intermediate springs having their top and bottom coilstied together and also connected to the corresponding coils of the springsv of the outer edge of the structure by any suitable means, such, for example, as by tie members 1 and 2 that extend longitudinally and transversely of the structure and which are connected to the marginal frames A and B. All of the parts above referred to are ofiwell known construction, and so'far as my broad idea is concerned, it is immaterial how the frames A and B are, constructed or how the springs Cv are tied to each other and to said frames.

In order to prevent the structure from losing its shape, I have provided the structure with a means that tends-to prevent the top frame A from moving laterally in either direction with relation to the bottom frame B, when a load is imposed on 'one' ofthe side edges of said top frame. Various means maybe used for this purpose without departing from the spirit of my invention, but I prefer to use a means of the char- ,acter herein shown which consists of one or more truss-shaped stays arranged between the top and bottom frames and connected to same or to the means thattlee. the springs frame A or the to the top coils of four together and holds them tion. In the embodiment of my invention illustrated in Figs. 1 and 2, wherein double cone spiral springs are used, one or more stays of substantially double truss form are employed for the purpose mentioned. Said stay or stays are formed from material that has sufiicient resiliency or flexibility to provide for the elongation and compression of the springs C, and each stay is arranged vertically between two rows of springs in such a manner that it extends transversely of the structure, as shown in Fig. l. The top and bottom portions of the' stay D are connected to the top and bottom coils, of some of the intermediate springs C, andriii the structure is provided with an intermediate frame E, as shown herein, connected to the springs C at the centers of same, as is usual in double cone spiral bed springs, the stay D will be so arranged that it surrounds or embraces the side members of intermediate frame E. lhe stay D is in parallel relasaid preferably formed'from a fiat strip or strips of material that has more or less resiliency, and while it is immaterial what means is employed for connecting said stay to the top and bottom portions. of the'structure, 1 prefer to connect the top portion of the stay of the intermediate springs by means of two clips 3 and connect the bottom portion of the stay to the bot-- tom coils of said springs by means of two clips 3, as shown in Figs. 1 and 2, each of said clips being riveted or connected in any other suitable manner to the stay and having its end portions bent over or wrapped around thecoils of the springs with which it coiiperates, as shown in Fig. l. While I have stated that the stay D is connected to the top and bottom coils of some of the intermediate springs C, I wish it to be understood that my invention is not limited to such a structure, and it is immaterial, so far as my broad idea is concerned, what parts of the structure the stay or stays D are connected to, so long as they are combined with the structure insuch a manner that they tend to resist lateral movement of the upper portion of the structure with relation to the lower portion. The stay or stays D do not vinterfere with the free vertical movement of the spiral springs C, in view of the fact that said stays are formed from material that has more or less resiliency, and they efiectively prevent the top top portion of the structure from moving laterally with relation to the bottom frame or bottom portion of the structure when a heavy load is imposed on one of the side edges of the top portion of the structure. Consequently said stay or stays hold the structure in shape and prevent the spiral springs C of same from being bent or twisted out of the vertical of the bottom frame B,

any tendency one edge of the top portion of menace position they are supposed to occupy. In Fig. 3 of the drawings 1 have illustrated a structure embodying my invention that is equipped with single cone spiral springs C, the top and bottom frames A and B of the structure being formed from pieces of angle iron. Said structure is provided with one or more single truss-shaped stays D arranged in substantially the same manner as the stay D, shown in Figs. 1 and 2, and having its outer ends connected to the bottom frame B or the structure and its intermediate portion connected to the top part of the structure. The ends of the stay D are preferably connected by rivets or other suitable devices 4- to the two side members and the upper portion of the stay is connected to the top coils of four of the intermediate springs C by means of two crossed clips l connected to the stay D by a rivet or other suitable fastening device 5 and having their end portions bent over or wrapped around the top coils of the springs with which they colipcrate, as shown in Fig. 5. The stays D are flexible enough so that they will not interfere with the free movement of the spiral springs C, but in view of the fact that said stays are connected to the top and bottom portions of the structure, they counteract for the top frame A tomove laterally when a load is imposed on one of the side edges of same.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is:

1. A structure of the character described, comprising a plurality of vertically-disposed, spiral springs arranged in the same orizontal plane and tied together, a top frame and a bottom frame combined with said springs, and a stay rigidly secured to the bottom of the structure and to the top coils of some of the intermediate springs for preventing the top'portion of the structure from moving laterally with relation to the bottom portion when a load is imposed on the structure.

2. A structure of the character described, comprising a plurality of spiral springs arranged vertically and combined with a top frame and a bottom frame that tend to hold said springs in parallel relation, and a transversely-disposed stay which tends to prevent said springs from assuming an angular position when a load is applied to one edge of the structure, said stay being ,iormed from a strip of metal hat is more or less resilient and having its upper portion connected to the upper end of some of the intermediate springs and its lower portion rigidly conneoted to said bottom frame.

3. A structure of the character described, comprising a plurality of spiral springs arranged in an upright position so as to..

form a resilient supporting structure, top and bottom frames combined with said springs, and a truss-shaped stay arranged transversely of the structure and connected intermediate its ends to the top portion of the structure at about the center of same and having its lower side rigidly connected to said bottom frame; for the purpose described.

4. A structure of the character described,

comprising a plurality of vertically-disposed, spiral springs that form a resilient supporting structure, and a truss-shaped stay rigidly connected to the bottom portion of said structure and to the intermediate portion of the top of the structure; for the purpose described.

5. A structure of the character described, comprising a top frame, a bottom frame, spiral springs arranged between said frames and connected to each other and also to said frames, and a truss-shaped stay interposed between said frames and having its lower portion rigidly connected to said bottom frame and the intermediate part of its upper portion connected to the end coils of some of the intermediate springs.

6. A structure of the character described provided with a plurality of vertically-disposed, spiral springs that act collectively to form a resilient supporting structure, and a truss-shaped stay arranged transversely of the structure and rigidly connected to the end coils of a number of the intermediate springs of the structure so as to prevent the top portion of thestructure from moving laterally with relation to the bottom portion of the structure.

7. A structure of the character described, comprising vertically-disposed spiral springs, a truss shaped stay arranged vertically between certain of said springs, and a clip connected to said truss and to the end coils of a plurality of springs between which the stay is arranged.

8. In a structure of the character described, a vertically-disposed stay of double truss form, double cone springs arranged vertically on opposite sides of said stay, and connections between the top and bottom portions of said stay and the top and bottom coils of some of the intermediate springs.

9. A spiral bed spring, comprising atop frame, a bottom frame, double cone spiral springs arranged between said frames, means for tying said springs together and to said frames, and, a double truss arranged transversely of the structure and having its top and bottom portions rigidly connected to the top and bottom coils of some of the intermediate springs.

WILLIAM E. FRANK.