US2685915A - Swing - Google Patents

Description

Aug. 10, 1954 c. HANNAS SWING Filed May 16, 1952 z/enirm Patented Aug. 10, 1954 UNITED STATES PATENT SWING GarlxL; Hannas, Fort Kent, Alberta, Canada Application.May" 1 6, 1952, Serial No. 288,147

Claims. 1

This invention relates to new and useful improvements in a tester swing and more particularly to a teeter'swing'of the type which is operated by-the occupants pushing against the back-rest of seats provided :on each end of a pivotably suspended platform.

The teeter swing embodies aasupporting structure having two upright members. A platform is pivotably suspended from the upright members at a point -on--each substantially below the upper end thereof. The platform is free to pivot about these points. At .least one-seat is provided at each end of the platform. Each of these seats has leg members which are pivotably mounted at the lower ends thereof to the platform. If only one seat is provided at each end of the platform, each of the leg members associated therewith is pivotably connected near its upper end to one end of a connecting member. The other end of each connecting member is pivotably connected to one of the upright members at a point substantially above the point of platform suspension. If second seats are provided, they are connected to the first seats.

The term platform is used to refer to any substantially rigid structure extending from one seat to the other of which a part near each seat is suitable to be stepped upon by a person using the swing.

The invention will be more fully understood by reference to the following detailed description taken in conjunction with the attached drawings wherein:

Figure 1 is a perspective View of the teeter swing,

Figure 2 is an enlarged perspective view of the suspension pivot for the platform,

Figure 3 is a perspective view of one end of a seat as shown in Figure 1, and Figure 4 is an enlarged detail view of part of the platform of the swing shown in Figure 1.

The supporting structure comprises horizontal foot members It and upright members H. The upright members Ii may be bolted to the foot members iii as at E2. The upright members ii and foot members It may be braced for greater rigidity as with diagonal members l3, cross-bracing members hi and members [5, Ni, ii, I8. It will be understood that any of the members l3, l4, l5, it, It or It may be of angle section or any other cross-section which will impart rigidity to the supporting structure.

A platform is is pivotably suspended from the upright members ii at 20 through supporting members 21 and gusset plates 22.

One of the pivotable suspensions 2a is shown in greater detail in Figure 2, and consists of a Z- shaped member is bolted to one of the upright members i I, an inverted T-shaped member 25 to which is bolted the supporting members 2i, and a pivot 26 extending through the upright member ii, the inverted T-shaped memberzii, and the Z-shaped member 24. The T-shaped :mem-

ber, and hence the platform depending therefrom, is pivotable about the pivot 25. Inorderto more fully support the ends of the platform iii, supporting members may beprovided-as showna't 2?. Cross members at are welded to each-end of the platform i9. The cross members'fit extend past the edges of the platform is, and the supporting members 2? are welded to the ends of the cross members 45 so that the members 2? are spaced from the edges of the platform it. The cross members it are each formed of a pair of angle irons joined at their ends. An angle iron member it is welded to each cross member 55 and has welded to it pivots 4? (see Figure 4).

At each end of the platform It is a seat 28 which has leg members 29. The lower end of the leg members 29 is pivotably connected to the platform l9 as at at (Figures 1 and 3). A connecting member 3| is pivotably connected to each of said leg members 29 near the upper end thereof at 32 (Figures 1 and 3) and to one of the upright members It at 33. Each of the seats 23 is provided with a back-rest 34 and a foot-rest 35 which if desired may be pivotable for greater foot comfort. The foot rests 35 are formed of angle irons running across the platform 19 and welded to uprights as shown in Figure l. The pivoted connections 30, 32, 33, 38, 4t and 4| areeach constructed of a pin welded in the angle of an angle iron and a boxing of conventional form arranged to bear on the pin. This construction for pivoted connection 33 is shown in Figures 3 and 4 in detail and a similar construction is used for the other pivoted connections.

The occupants of the swing seat themselves in seats 28 with their backs against the back-rests 3 and their feet on foot-rests 35. To operate the teeter swing the occupants in one of the seats 28 (say the right-hand one) relax while the occupants of the other seat 28 (the left-hand one) push with their backs against the back-rest 34 and their feet against the foot-rest 35. This causes the platform iii to begin to rotate about the pivot 20 in a clockwise direction; that is, the left-hand end of the platform It goes up whereas the right-hand end goes down. When the righthand end of the platform approaches the ground,

the occupants of the left-hand seat 28 should relax whereas the occupants of the right-hand seat 28 should push against the back-rest 34 as was done initially by the left-hand seat occupants. This will cause the rotation to reverse. In other words, the platform l9 will assume a counter-clockwise rotation until the left-hand seat 28 approaches the ground, at which time the rotation will again be reversed.

If desired, a second seat 35 may be provided at each end of the platform 19 in front of the seat 28. Each of these seats 36 has leg members 31, the lower ends thereof being pivotably attached to the platform I9 as at 38. A member 39 connects each leg member 3! to the leg member 29 immediately therebehind through pivots 40 and l i. Associated with each seat 39 is a foot-rest 42 similar to the foot-rests 35, and a back-rest 44 similar to the back-rest 34. Thus, occupants of the seats 36 perform the same function as oocupants of the seats 28. A U-shaped opening in each of the back-rests 44 may be provided to give easy access to the seats 28.

t will be understood that the supporting members 27, the connecting members 3|, and the members 39 may be of angle section or any other cross-section which will impart rigidity.

fhe platform 19 may be provided with a corrugated floor, as shown in Figure 1 so that one may walk up or down the platform without slipping when it is in an inclined position. The corrugated floor may be formed of narrow wooden planks, each bias cut so that two planks fitted together form one corrugation.

What I claim as my invention is:

1. A teeter swing comprising a supporting structure having upright members, a platform pivotably suspended from said upright members and having a seat at each end thereof, each of said seats having leg members pivotably attached at their lower ends to said platform, and a connecting member associated with each leg member having one end pivotably attached thereto near the upper end thereof, each of said connecting members having its other end pivotably connected to one of said upright members at a point above the point of platform suspension.

2. A teeter swing as claimed in claim 1, wherein a second seat is provided towards each end of said platform in front of said first seat, each of said second seats having leg members pivotably attached at their lower ends to said platform and pivotably attached at intermediate points to the adjacent leg members of the adjacent first seat.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,714,247 Smedley May 21, 1929 1,726,934 Stock Sept. 3, 1929 1,941,824 Booth Jan. 2, 1934 FOREIGN PATENTS Number Country Date 329,753 Great Britain May 29, 1930

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