US1507944A - Playground apparatus - Google Patents

Description

Sept. 9, 1 924. 1,507,944

W. WILLIAMS PLAYGROUND APPARATUS Filed July 29, 1922 FIGURE 1 INVENTOR M R56 i M FIG-U v a BY fig. .1

ATTORNEY Patented Sept. 9, 1924.

UNITED STATES PATENT OFFICE.

WINFIELD WILLIAMS, OF SAN JOSE, CALIFORNIA, 'ASSIGNOR TO J. F. PATTERSON AND HORTENSE BEAN, A COPARTNERSHIP, UNDER THE NAMEOF PATTERSON-W111 LIAMS MFG; 00., OF SAN JOSE, CALIFORNIA.

PLAYGROUN D APPARATUS.

Application filed July 29, 19 22. Serial No. 578,454

To all whom it may concern:

Be it. known that I, WINFIELD WILLIAMS, a citizen of the United States, and resident of San Jose, in the 'county'of Santa Clara and Stateof California, have invented certain new and useful Improvements in Playground Apparatus, of which the following is a specification. I

My invention relates to a form of playground apparatus adapted to accommodate a number of children and so constructed as .tooscillate in a novel manner when actuated by the said children.

It is one object of my invention to provide a device of the character indicated that will be simple in form and construction. economical to manufacture, and that will provide great freedom of movement with but few moving parts.

It is a further object of my invention to provide a device that will readily accommodate a number of children at the same time, and that provides ready means usable simultaneously by all of the children for setting the movable part of the device in motion and continuing the same in motion, the said means forming a stationary part of the structural framework.-

It is a still further object of my invention to provide a device of the character indicated so constructed as to operate under the impulses imparted thereto by the operators thereof, and in which the parts are so arranged as to eliminate any possibility of injury toa child when the device is in use.

In the drawing Figure 1 is a side elevation of my -improved playground apparatus. 1

Figure 2 is an end elevation of the same.

Figure 3 is a detail section on 33 of Figure 1 but with a different form of swinging bar mounted therein. I I

Referring more particularly to -the drawing, 11-11 indicate four corner posts,

preferably formed of pipes set in concrete foundations 2. These corner posts are arranged in spaced pairs as shown, each pair in turn being spaced, and the four posts defining the four corners of an oblong rectangular figure.

Mounted upon the upper end of each post is a fitting 3 lying in the vertical plane of the pair of posts to which it belongs. The fitting 3 is provided with a bearing surface oscillate.

4 4: in which are monnted roller bearings -5 engaging one end 6 of a crank 7. A washer 8 is shown oncrank end 6 and engaging the inner end of fitting 3"and held against, displacement by a cotter pin 9. On the outer end of crank end .6 is another washer 10 engaging the outer end of fitting 3 and secured by a nut 11 threaded upon crank end 6 andlocked by the mutilationof the threads on crank end 6.

A single crank 7 is suspended between each pair of posts 1. is placed a plank 12 to form a seat, the said plank overhanging both cranks a distance and connected thereto by means of any suit able type of bearings as at 13. v

The construction set forth is so proportioned that the feet of the children will readily clear the ground when they are astride the plank. Arranged parallel to plank 12 and connecting the two posts on each side thereof at points a'distance above On these two cranks the horizontal plane-of the plank are hand bars 1-l14, preferably connected to posts 1 by means of Ts at 15 whereby the said posts 1 and hand bars 14 form a unitary structure.

In operating this device a number of children straddle plank 12 and grasp hand bars 14. By alternately pulling and pushing on said hand bars the plank is caused to Owing to the comparative shortness of the cranks 7 the oscillations are somewhat rapid and more or less jerky, imparting a motion that is novel and particularly adaptable to young children.

The construction itself is of such a nature as to require but few lnexpenslve parts as v sembled in a simple and 'lnexpenslve'manner,

a horizontal bar 16 is shown in Figure 3 from which the swing may be hung, the said bar engaging bearings 4, but this form is not desirable because the bar 16 is somewhat in the way and may cause injury to a child.

It is to be understood, of course, that while I have herein, shown and described but 'one embodiment of my invention, changes in form, construction, proportions, and, meth- 0d of operation may be made within the scope of the appended claims.

I claim: Y g a 1. In playground apparatus, two pairs of spaced vertical bars defining the corners of an oblong rectangular figure, parallel-hand bars connecting the pairs t vertical bars, a seat member arranged below the plane of said hand bars, and parallelly arranged swinging means for supporting the ends thereof between said pairs of vertical bars.

In playground apparatus, supporting means defining the corners of an oblong rectangular figure, parallel and horizontal hand bars connecting the supporting means on each of the longer sides of said figure, a seat member arranged below the plane of said hand bars, and'parallelly arranged swinging means supporting said seat member sup;- ported between the supporting means at each end of said figure. i

3, In playground apparatus, four vertical postsdefining the corners of an oblong rectangular figure, a hand bar rigidly connecting said posts on the longer sides of said figure, a U shaped bar having outwardly projecting portions on its upper ends pivotally mounted upon the posts at each end of said figure and between the same, said U shaped members being arranged in parallel relation to each other, a seat member arranged below the plane of said hand bars, and bearings carried by said member at each end thereof, and engaging the lower portions of said .U shaped members.

' WVIN'FIELD l/VILLIAMS.

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