US3755878A

US3755878A - Method of making a slide

Info

Publication number: US3755878A
Application number: US00224108A
Authority: US
Inventors: St Henning
Original assignee: American Playground Devices Co
Current assignee: American Playground Devices Co
Priority date: 1972-02-07
Filing date: 1972-02-07
Publication date: 1973-09-04
Anticipated expiration: 1990-09-04

Abstract

A slide and method of making it in which there is an upright ground-engageable post having a helical channeled bedway extending axially therealong with a ladder interconnected to the upper end of said bedway. The bedway is formed from an annular body having inner and outer radially spaced circumferential edges. After the body is formed, it is cut thereacross, a post is inserted through said body, and the inner circumferential inner edge of said body adjacent one of its ends is connected to said post. The opposite end of said body is pulled axially along the post to cause said body to project radially outwardly therefrom with its inner circumferential edge abutting said post along a helical path. Said inner circumferential edge is fastened to the post, and the ladder is then interconnected to the upper end of the extended bedway.

Description

Waited tates Patent arming t. 4, I973 METHOD OF MAKING A SLIDE Primary Examiner-Charlie T. Moon 75 Inventor. Steven A. Henmn Anderson, Ind. l 1 Attorney-Thomas P. .lenkmsJack W. Hanley [73] Assrgnee: American Playground Device (30.,

Anderson, Ind.

[22] Filed: Feb. 7, 1972 57 ABSTRACT [21] App]. No.: 224,108

A slide and method of making it in which there is an upright ground-engageable post having a helical chan- [52] C! 29/456 29/1568 29/1573 neled bedway extending axially therealong with a lad- Km 0 29/469 113/116 gi l g lo z der interconnected to the upper end of said bedway. I p The bedway is formed from an annular having [58] Flew of Seal-cl? 29/1573 156's inner and outer radially spaced circumferential edges. 29/469, 456, 113/116 R, 193/12, 272/565 R After the body is formed, it is cut thereacross, a post is inserted through said body, and the inner circumferen- [56] References C'ted tial inner edge of said body adjacent one of its ends is UNITED STATES PATENTS connected to said post. The opposite end of said body 803,119 10/1905 Logan 272/565 R is pulled axially along the post to cause said body to 1,256,724 2/1918 Pardee.... 193/12 project radially outwardly therefrom with its inner cirl,628,804 5/1927 ri 29/456 cumferential edge abutting said post along a helical 1,750,081 3/1930 wood et 193/12 path. Said inner circumferential edge is fastened to the 2,437,259 3/1948 Kautz 193/12 X post, and th ladder i then interconnected to the pp 2,965,744 l2/l960 Busse 29/1573 AH UX end of the extended bedwa 3,566,501 3/l97l Winchester 29/l57.3 AH y.

FOREIGN PATENTS 01R APPLICATIONS 9 Claims 7 Drawing Figures l2,l l8 5/1907 Great Britain 272/565 R 22' i I/IB Patented Sept. 4, 1973 3,755,878

2 SheetsSheet l Patented Sept. 4, 1973 3,755,878

2 Sheets-Sheet 23 METHOD OF MAKING A SLIDE BACKGROUND. OF THE INVENTION Helical slides and chutes in which the slide bedway or channel is in the form of a helix mounted on a vertical support running along the axis of the helix are known in the art. Such slides are shown in my prior U.S. Pat. Des. No. 221:,963 and in U.S. Pat; Nos. 1,256,724; 2,437,259; 1,270,366 and 3,083,015.

In the manufacture of' such slides, it has heretofore been the conventional practice to form the channel shaped bedway of the slide from a plurality of small pieshaped sections which are connected to each other and to the center supporting post. Because of the small radial extent of the inner ends of these various. sections, it has been necessary to brace such sections and the bedway formed thereby with braces extending from the sections inwardly to the supportingpost or by groundengageable braces projecting outwardly and downwardly from the bedway.

The instant invention overcomes the difficulties and disadvantages of such prior construction methods by providing a method of making a spiral slide in which the channeled bedway is formed from a limited number of parts which can be easily connected to each other and to the central supporting post thereby effecting economies in the manufacture of the slide and reducing the number of interconnections that must extend across the bedway.

SUMMARY OF THE INVENTION In accordance with the preferred form of the invention, there is first formed an annular body having a gen.- erally U-shaped cross-section between its inner and outer'circumferential edges. A radial cut is made across the body between a pair of points on its inner and outer circumferential edges to thus form a pair of ends on said body. An elongated ground-engageable post is inserted through the body, and the inner circumferential edge of said body adjacent one end thereof is fixedly connected to said post. After the connection is formed, the opposite end of the body is pulled axially along said post to thus cause said body to project radially outwardly from the post with its inner circumferential edge abutting said post along a helical path. The inner circumferential edge is rigidly fastened to the post with the body forming a spiral bedway extending downwardly along the post.

A platform assembly is connected to said body at the upper end thereof, and a ground-engageable ladder is connected to said platform assembly. The lower end of the helical bedway terminates above the lower end of the ground-engageable post, and desirably, a U-shaped discharge chute is mounted on the lower end of said bedway to project generally tangentially outwardly from said post.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings illustrate the invention. In such drawings:

FIG. 1 is a side elevation of a slide according to the instant invention, with portions thereof being broken away;

FIG. 2 is a top plan view of the slide shown in FIG.

FIGS. 36 show the successive steps for forming and mounting the channeled bedway on the slide shown in FIG. l; and

FIG. 7 is a side elevation of a slide similar to the one shown in FIG. l, but showing a modified form thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in FIG. 1, my novel slide construction comprises a. spiral bedway 10 projecting radially outwardly from and extending axially along a ground-engageable center support post 12. A discharge chute 14 is mounted on the lower end of the bedway 10,.and a platform assembly l6 is mounted on the upper end of said bedway. A ground-engageable ladder assembly 18 is mounted on the outer end of the platform assembly 16 and angles downwardly therefrom.

As shown in FIGS. 3-5, the bedway 10 is formed by forming a circular disc 20 into an annular body 22 having inner and outer

circumferential edges

23 and 24. The body has a generally U-shaped cross-section between the

edges

23 and 24 to give it a channeled crosssection. This cross-sectional configuration is provided by an inner wall portion 25 whose inner edge constitutes the inner circumferential edge 23 and an outer wall portion 26 whose outer edge constitutes the circumferential edge 24. The inner and

outer wall portions

25 and 26 are interconnected by a floor portion 27 which forms the bottom or floor of the bedway 110. As shown, the outer wall portion 26 has an axial extent substantially greater than the axial extent of the inner wall portion 25. Desirably, in forming the body 22, the outer circumferential edge 24 is rolled to form a bead 28 extending therealong.

After the body 22 has been formed-into the configuration illustrated in FIG. 4, a radial cut 30 is formed in said body as illustrated in FIG. 5. As shown, the cut 30 extends from a point on the inner circumferential edge 23 radially outwardly to an adjacent point on the outer circumferential edge 24. In this manner, the body is provided with a pair of

ends

32 and 33. As shown in FIG. 6, after the cut 30 has been formed, the elongated post 12 having a ground-engageable foot 37, is inserted through the center of the body 22. Said post has an outer circumference substantially less than the length of the circumferential edge 23. With the post inserted through the body 22, the inner circumferential edge 23 of the body, adjacent its end 33, is rigidly fastened to said post, as at 38. As shown in FIG. 6, the connection 38 is disposed adjacent to but downwardly from the upper end of said post.

It is also possible to insert the post 12 through the body 22 prior to forming the cut 30 therein. However, in most applications it is easier to manipulate and handle the body to form said cut prior to inserting the post through said body.

After the connection 38 has been made, the free end 32 of the body 24 is pulled downwardly along post 12 as indicated by the arrow A. This downward pulling effort causes the body to rotate around the axis of the post 12 with its inner circumferential edge 23 abutting said post along a helical path. Desirably, the body 22 is extended axially along post 12 a distance sufficient that said body forms one revolution around said post. With the body maintained in its extended helical configuration, its inner edge 22 is rigidly fastened to the post. With the body rigidly connected to the post, the

bedway formed thereby is maintained in a radially extending position on said post with the wall portion 26 of the body 22 being axially oriented and the circumferential edge 24 being disposed above the corresponding portions of the circumferential edge 23. As shown, the connection between the bedway and the post constitute the sole means of connecting the bedway to the post.

After the bedway It) has thus been formed and rigidly connected to the post 12, the discharge chute 14 is rigidly connected to the lower end 32 of said bedway to project tangentially outwardly from the post. As shown, said chute has a generally U-shaped configuration, and is thus provided with inner and

outer wall portions

42 and 43 connected to wall portions and 26 and a floor portion 44 connected to the floor portion 27.

The platform assembly 16 is then mounted on the upper end 33 of the bedway. As shown in FIGS. 1 and 2, said platform assembly comprises a platform 46 having a U-shaped cross-section formed from a pair of

side walls

48 and 49 interconnected by a floor 50. The inner end of the wall 49 is connected to the outer wall portion 26, while the inner end of the platform wall 48 is connected to the post 12. A generally frustoconical transition section 55 is connected the inner edge of the platform floor 50 and to the inner wall portion 25, floor portion 27 and a portion of the outer wall portion 26 of the bedway 10. As shown in FIG. 2, the transition section is also connected to the adjacent portion of the post 12, as at 57. Conveniently, an arcuate guard rail 59 is connected to the inner edge of the platform wall 49 and to the circumferential edge 24 of the bedway 10.

As shown in FIGS. 1 and 2, the ladder assembly 18 angles downwardly and outwardly from the outer end of the platform assembly 16. Conveniently, said ladder assembly comprises a pair of

side walls

60 and 61 interconnected by a back wall 62. A plurality of vertically spaced steps 63 are mounted on the back wall 62 between the

side walls

60 and 61.

As shown in FIG. I, the outer end of the platform floor 50 projects outwardly beyond the ends of the

side walls

48 and 49 and is connected to the ladder back blies.

In the embodiment illustrated in FIG. 1, the bedway is formed from a singular annular body 22. In many applications, however, it may be desirable to have a bedway 10 having a greater helical extent than that illustrated in FIG. 1. Thus, it may be desirable to form a bedway 10' from a plurality of interconnected annular bodies 22', as is shown in FIG. 7.

In the formation of the bedway 10 in FIG. 7, a pair of identical annular bodies 22 are formed in the same manner as is illustrated in FIGS. 4 and 5. After each of said bodies has been provided with its radially extending cut, a pair of ends on the two bodies are rigidly joined together as shown at in FIG. 7. In this manner, the two interconnected bodies form a unitary extended helix. After the bodies are interconnected, the ground-engageable post 12' is inserted through them.

The bedway I0 is then formed in the same manner as previously described in connection with the embodiment shown in FIG. 1, and the discharge chute M and the platform and ladder assemblies 16 and 18' are also mounted on the bedway in the same manner previously described. In this embodiment, as with the embodiment shown in FIG. 1, it is preferable if each of the bodies 22 makes one revolution around the post 12.

While the invention has been described in the context of a playground slide, it is to be understood, of course, that the same principles and techniques can be employed for using the invention in the fabrication of a spiral type conveyor. In such application, it is, of course, not necessary to employ the

ladder assemblies

18 or 18 or the

platform assemblies

16 and 16, and accordingly, such assemblies may be eliminated without departing from the spirit and scope of the invention as set forth in the appended claims.

I claim:

1. A method of making a slide, comprising the steps of forming an annular body having inner and outer radially spaced circumferential edges, said body having a generally U-shaped cross-section between said circumferential edges, forming a cut across said body between a point on said inner circumferential edge and an adjacent point on said outer circumferential edge to define a pair of ends on said body, inserting an elongated post through said body, fastening the inner circumferential edge of said body adjacent one of said ends to said post, pulling the other of said ends axially along said post whereby said body forms. a bedway projecting radially outwardly from said post with its inner circumferential edge abutting said post along a helical path, fastening said inner circumferential edge to said post, connecting platform-forming means to said one of said ends, and connecting a ladder to said platform.

2. A method of making a slide as set forth in claim 1 in which said body is pulled axially along said post a distance such that said bedway makes one revolution around said post.

3. A method of making a slide as set forth in claim I in which said body comprises inner and outer wall portions interconnected by a floor portion, the inner edge of said inner wall portion constituting said inner circumferential edge and the outer edge of said outer wall portion constituting said outer circumferential edge, said outer wall portion having a greater axial extent than said inner wall portion.

4. A method of making a slide as set forth in claim 1 in which said cut extends radially of said body.

5. A method asset forth in claim 1 in which said post is inserted through said body prior to the step of forming a cut in said body.

6. A method of making a slide, comprising the steps of forming first and second annular bodies each having inner and outer radially spaced circumferential edges and U-shaped cross-sections between said edges, forming a cut across each of said bodies between a point on its inner circumferential edge and an adjacent point in its outer circumferential edge to define a pair of ends on each of said bodies, interconnecting one end of said first body to one end of said second body whereby said bodies form a unitary helix, inserting an elongated post through said bodies, fastening the inner circumferential edge of said first body adjacent one end of said helix to said post, pulling said helix axially along said post whereby said helix forms a bedway projecting radially outwardly from said post with the inner circumferential edges of said first and second bodies abutting said post along a helical path, fastening said inner circumferential edges to said post, connecting a platform assembly to said one end of said helix, and connecting a ladder assembly to said platform assembly.

7. A method as set forth in claim 6 in which said helix is pulled axially along said post a distance such that each of said first and second bodies makes one revolution around said post.

8. A method of making a slide as set forth in claim 6 in which said first and second bodies are identical in size and shape.

9. A method of making a slide, comprising the steps of forming an annular body having inner and outer radially spaced circumferential edges, said body having a generally U-shaped cross-section between said circumferential edges, forming a cut across said body between a point on said inner circumferential edge and an adjacent point on said outer circumferential edge to define a pair of ends on said body, inserting an elongated post through said body, fastening the inner circumferential edge of said body adjacent one of said ends to said post, pulling the other of said ends axially along said post whereby said body forms a bedwaay projecting radially outwardly from said post with its inner circumferential edge abutting said post along a helical path, and fastening said inner circumferential edge to said post.

l IE1 l t t

Claims

1. A method of making a slide, comprising the steps of forming an annular body having inner and outer radially spaced circumferential edges, said body having a generally U-shaped cross-section between said circumferential edges, forming a cut across said body between a point on said inner circumferential edge and an adjacent point on said outer circumferential edge to define a pair of ends on said body, inserting an elongated post through said body, fastening the inner circumferential edge of said body adjacent one of said ends to said post, pulling the other of said ends axially along said post whereby said body forms a bedway projecting radially outwardly from said post with its inner circumferential edge abutting said post along a helical path, fastening said inner circumferential edge to said post, connecting platform-forming means to said one of said ends, and connecting a ladder to said platform.

3. A method of making a slide as set forth in claim 1 in which said body comprises inner and outer wall portions interconnected by a floor portion, the inner edge of said inner wall portion constituting said inner circumferential edge and the outer edge of said outer wall portion constituting said outer circumferential edge, said outer wall portion having a greater axial extent than said inner wall portion.

5. A method as set forth in claim 1 in which said post is inserted through said body prior to the step of forming a cut in said body.

9. A method of making a slide, comprising the steps of forming an annular body having inner and outer radially spaced circumferential edges, said body having a generally U-shaped cross-section between said circumferential edges, forming a cut across said body between a point on said inner circumferential edge and an adjacent point on said outer circumferential edge to define a pair of ends on said body, inserting an elongateD post through said body, fastening the inner circumferential edge of said body adjacent one of said ends to said post, pulling the other of said ends axially along said post whereby said body forms a bedway projecting radially outwardly from said post with its inner circumferential edge abutting said post along a helical path, and fastening said inner circumferential edge to said post.