US2719571A - Rotatable stool convertible to nonrotatable - Google Patents

Description

Oct. 4, 1955 G. o. TAYLOR I ROTATABLE STOOL CONVERTIBLE TO NON ROTATABLE Filed July 1, 1952 F IG. 2.

FIG. I.

INVENTOR GEO RGE O. TAYLOR ATTORNEY United States Patent ROTATABLE STOQL CONVERTIBLE T0 NONROTATABLE George 0. Taylor, Antlers, Gkla.

Application July 1, 1952, Serial No. 296,539

3 Claims. (Cl. 155-94) This invention relates to a stool and particularly to a stool which is provided with a universal joint between its base and its seat so that a rotary motion is imparted to a person sitting on the stool unless he balances the stool with his legs.

In these days of wars and threats of wars, it is of great importance that military or civilian sentries or watchmen who guard important installations be fully alert at all times, either against the enemy in the field or against acts of sabotage behind the lines either in this country or abroad. It is, at the same time, important that the sentry not become overly tired while on duty at his post.

It is, therefore, one object of this invention to provide a stool for a sentry or watchman which will enable him to remain sitting, but yet prevent his becoming too comfortable and falling asleep at his post.

Another object of this invention is to provide a sentry stool which can be easily adjusted and which is small and light enough to be carried from one place to another as the need arises.

Another object of this invention is to provide a stool which can be used either as a sentry stool to prevent the falling asleep of the sentry or which, by a simple adjustment, can serve as an ordinary stool.

Other objects of this invention are to provide an improved device of the character described, that is easily and economically produced, which is sturdy in construction, and which is highly effective in operation.

With the above and related objects in view, this invention consists in the details of construction and combination of parts, as will be more fully understood from the following description, when read in conjunction with the accompanying drawing in which:

Fig. 1 is an elevational view of the assembled device.

Fig. 2 is an exploded view of the device shown in Fig. 1.

Fig. 3 is a view taken on the line 33 of Fig. 1.

Fig. 4 is a view taken on the line 44 of Fig. 1.

Fig. 5 is an enlarged detailed view taken on line 5-5 of Fig. 1.

Referring now in greater detail to the drawing wherein similar reference characters refer to similar parts, there is shown a base having a stem 12 extending therefrom. A ball socket member 14 comprising two sections 16 and 18, each of which is formed with a depending portion as at 20 and 22, is adapted to be slidably received over the stem 12. Flanges 24 and 26 are formed on opposite sides of each section of the socket member, and bolts 28 are adapted to extend through coinciding holes in these flanges. Washers 30 hold the bolts in place to thereby connect the sections of the socket members to each other and also to ice clamp the socket member around the stem 12. In order to adjust the height of the socket member on the stem, it is merely necessary to loosen the bolts, adjust the socket to the required height, and then tighten the bolts again.

A seat member, generally designated 32, comprises a ball portion 34 which, when set into the socket 14 forms a universal ball and socket joint, a stem 36 integral with the ball 34, and a seat 38 connected to the stem 36. The seat is attached to the top 40 of the stem 36 by means of rivets 42. Brace members 44 are connected between the stem and the bottom of the seat for additional support.

A plurality of holes 46 are provided in the socket member and a similarly arranged plurality of holes 48 are provided in the ball 34. When it is desired to use the stool for a sentry on duty, the ball is left loose in the socket and this causes the sentry to be forced to balance the seat with his feet so that if he falls asleep, he will lose his balance and topple over. If it is desired to use the stool for ordinary purposes, it is merely necessary to place locking pins or bolts through the holes 46 and 48. This locks the ball in one position in the socket.

Holes 50 and 52 are respectively formed adjacent the top of the socket and in the center of the ball for the purpose of receiving a pin therethrough. Such a pin would lock the ball against any movement in the socket except a rocking motion on the axis of the pin.

Although this invention has been described in considerable detail, such description is intended as being illustrative rather than limiting, since the invention may be variously embodied, and the scope of the invention is to be determined as claimed.

What is claimed as the invention is:

l. A seating device comprising a base, a stem mounted on said base, a socket member adjustably secured to said stem, said socket member comprising two separable, hollow sections, each section consisting of a portion of a hernisphere greater than a quarter from which depends half a hollow cylinder, and flange means on each of said sections and securing means extending through said flange means to connect them to each other with said depending half hollow cylinders encompassing and adjustably mounted on said base stem, a ball fitted within said socket member for universal movement therewithin, a stem extending from said ball, and a seat member connected to said ball stem.

2. The device of claim 1 wherein means are provided in the ball and in the socket to receive locking members for the purpose of locking the ball against movement in the socket, and locking members received in said means.

3. The device of claim 1 wherein alignable openings are provided in the ball and in the socket to receive a pin for the purpose of providing an axis for rocking movement of the ball in the socket, and a pin received within said openings when aligned.

References Cited in the file of this patent UNITED STATES PATENTS 633,021 Mason Sept. 12, 1899 1,124,714 Denning Jan. 12, 1915 1,358,640 Koyama Nov. 9, 1920 1,455,441 Hodny May 15, 1923 2,048,148 Stoll July 21, 1936

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