GB2195550A

GB2195550A - Swing with movable hinge pivots

Info

Publication number: GB2195550A
Application number: GB08623524A
Authority: GB
Inventors: William Ronald Turner
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-10-01
Filing date: 1986-10-01
Publication date: 1988-04-13
Also published as: GB8623524D0

Abstract

A swinging device having hinge pivots 2 which are movable in guides along the top horizontal supports 1 of the swing frame giving a variety of different swinging seat positions. The movement of the pivots, 2, is effected by sliding the pivot along top members, 1, and bolt fixing through slotted holes in the desired positions, or by screw threaded spindles, or by a chain drive, rotated by a hand wheel, or powered by an electric motor with suitable control switches. The movement can be made in small increments of travel, intermittantly or continuously. <IMAGE>

Description

SPECIFICATION Variable swing This invention relates to a swinging device having movable top hinge pivots.

Swings usually have stationary fixed pivots, hinges and the like, and the swing seat repeatedly moves through a consistant arc.

According to the present invention, the positions of the top hinge pivots are changed by small increments of travel resulting in differing seat inclinations and gyrations.

Various methods of changing the top pivot positions are described by this invention The accompanying drawings show the embodiment of this invention.

Figure 1 shows the arrangement of the swing device, with the suspension frames, 5, supporting the seat in vertical positions as at H when at rest.

Figures 2, 3 & 4, show diagrammatically the swing seat and supports in full lines when at rest, as positions H, and when swung to the right hand the seat and supports are shown in broken lines as G.K.M, and when swung to the left hand, seat and supports are shown in dotted lines as J.L.N, with the pivot positions changing from A & B, to C & D as in Fig. 3, and with the swing seat inclining upwards and outwards as L & K, when pivot positions are changed from A & B to E & F. The swing seat inclines downward and outwards as M & BR< N.

Referring to the drawings, the swing unit comprises of a four legged tubular or angle section frame, suitably braced, (bracings not shown), with two horizontal supports 1 connected to the tops of the four legs, these supports 1 carry the movable pivot bearings, or blocks, or rollers 2, and spindles 3, the tops of the suspension supports are attached to the spindles 3, and swivel attachments 5 on the seat are connected to the bottom ends of the suspension supports 4.

The pivot positions are changed by manually moving the pivots 2, and bolting through slotted holes in supports 1, in the desired position, the pivots 2 are housed in suitable guides.

Figure. 5 shows an alternative method of changing pivot positions, namely; a spingle 7 & 8, on both sides of the swing frame, each spindle is carried in three bearings 6, which are fixed to the main supports 1. The portion of the spindle 7, has a right hand screw thread, and the portion 8 has a left hand screw thread, the pivot blocks 2, have a corresponding right and left hand internal screw thread, and are screwed onto the spindle 7 & BR< 8, which is rotated by a chain drive 9, with chain sprockets 10 & 11, the latter is fitted with a handle to provide motive hand power by turning clockwise or anticlockwise, thus moving the pivot 2, from positions C & D, to E & F, or E & F to C & D. The pivot move- ment can be stopped at any desired position between these positions.

Figure 6 shows a further alternative method of pivot change i.e. by chain drive 12, on each side of swing frame, the chain 12, passes around chain sprockets 13, and 14, and connected to the pivot bearings or blocks 2. The hand operated chain drive 9,10,11 as described for Fig. 5, is used to motivate movement of chain 12, in direction of arrows 15, when the handle and chain sprockets are rotated clockwise, thus moving the pivot blocks 2, from E & F to C & D, the pivot blocks travel in the reverse direction when the handle is turned anticlockwise.

The hand operated chain drive 9,10,11 in Figs. 5 & 6 can be dispensed with and replaced by a powered electric motor with a suitable combined reduction gear unit, complete with limit switches and reversing switch to control the length and direction of the travel or movement of the swing pivots 2, intermittantly or continuously.

All the foregoing descriptions of pivot changes, have related to the pivots being moved equally to the right and left of the centre of the swing frame, but in all cases as an alternative one pivot is fixed at one extreme end E, and the other pivot only is moved from position A to F, and in reverse F to A. Thus producing similar swing seat gyrations.

The pivot changing mechanism is as previously described, except in Fig. 5, the spindle 7 & 8, is right hand thread only, and shortened to disconnect from the fixed pivot at E, and the centre bearing 6 is omitted, and in Fig. 6 the chain sprocket wheel 13 is repositioned to the dotted position 16 and the chain is disconnected from the fixed pivot at E.

1. A swinging device having movable top hinge pivots, giving varying inclinations and gyrations of the swinging seat.

2. A swinging device as claimed in claim 1 with suitable guides controlling direction of the movable top hinge pivots.

3. A swinging device as in claims 1 & 2, with both sets of hinge pivots being movable.

4. A swinging device as in claim 3, but having one hinge pivot being fixed and the other pivot moving the full length of the swing frame.

5. A swinging device as in claims 3 & 4, wherein the pivot change is made by rotating screw threaded spindles on which the pivots are positioned.

6. A swinging device as claimed in claim 5, but the pivot change is made by a chain and sprocket arrangement 7. A swinging device as in claims 5 & 6, wherein the motive power is made by hand wheel and chain drive

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **.

SPECIFICATION Variable swing This invention relates to a swinging device having movable top hinge pivots.

Swings usually have stationary fixed pivots, hinges and the like, and the swing seat repeatedly moves through a consistant arc.

According to the present invention, the positions of the top hinge pivots are changed by small increments of travel resulting in differing seat inclinations and gyrations.

Various methods of changing the top pivot positions are described by this invention The accompanying drawings show the embodiment of this invention.

Figure 1 shows the arrangement of the swing device, with the suspension frames, 5, supporting the seat in vertical positions as at H when at rest.

Figures 2, 3 & 4, show diagrammatically the swing seat and supports in full lines when at rest, as positions H, and when swung to the right hand the seat and supports are shown in broken lines as G.K.M, and when swung to the left hand, seat and supports are shown in dotted lines as J.L.N, with the pivot positions changing from A & B, to C & D as in Fig. 3, and with the swing seat inclining upwards and outwards as L & K, when pivot positions are changed from A & B to E & F. The swing seat inclines downward and outwards as M & BR< N.

Referring to the drawings, the swing unit comprises of a four legged tubular or angle section frame, suitably braced, (bracings not shown), with two horizontal supports 1 connected to the tops of the four legs, these supports 1 carry the movable pivot bearings, or blocks, or rollers 2, and spindles 3, the tops of the suspension supports are attached to the spindles 3, and swivel attachments 5 on the seat are connected to the bottom ends of the suspension supports 4.

The pivot positions are changed by manually moving the pivots 2, and bolting through slotted holes in supports 1, in the desired position, the pivots 2 are housed in suitable guides.

Figure. 5 shows an alternative method of changing pivot positions, namely; a spingle 7 & 8, on both sides of the swing frame, each spindle is carried in three bearings 6, which are fixed to the main supports 1. The portion of the spindle 7, has a right hand screw thread, and the portion 8 has a left hand screw thread, the pivot blocks 2, have a corresponding right and left hand internal screw thread, and are screwed onto the spindle 7 & BR< 8, which is rotated by a chain drive 9, with chain sprockets 10 & 11, the latter is fitted with a handle to provide motive hand power by turning clockwise or anticlockwise, thus moving the pivot 2, from positions C & D, to E & F, or E & F to C & D. The pivot move- ment can be stopped at any desired position between these positions.

Figure 6 shows a further alternative method of pivot change i.e. by chain drive 12, on each side of swing frame, the chain 12, passes around chain sprockets 13, and 14, and connected to the pivot bearings or blocks 2. The hand operated chain drive 9,10,11 as described for Fig. 5, is used to motivate movement of chain 12, in direction of arrows 15, when the handle and chain sprockets are rotated clockwise, thus moving the pivot blocks 2, from E & F to C & D, the pivot blocks travel in the reverse direction when the handle is turned anticlockwise.

The hand operated chain drive 9,10,11 in Figs. 5 & 6 can be dispensed with and replaced by a powered electric motor with a suitable combined reduction gear unit, complete with limit switches and reversing switch to control the length and direction of the travel or movement of the swing pivots 2, intermittantly or continuously.

All the foregoing descriptions of pivot changes, have related to the pivots being moved equally to the right and left of the centre of the swing frame, but in all cases as an alternative one pivot is fixed at one extreme end E, and the other pivot only is moved from position A to F, and in reverse F to A. Thus producing similar swing seat gyrations.

The pivot changing mechanism is as previously described, except in Fig. 5, the spindle 7 & 8, is right hand thread only, and shortened to disconnect from the fixed pivot at E, and the centre bearing 6 is omitted, and in Fig. 6 the chain sprocket wheel 13 is repositioned to the dotted position 16 and the chain is disconnected from the fixed pivot at E.

1. A swinging device having movable top hinge pivots, giving varying inclinations and gyrations of the swinging seat.

2. A swinging device as claimed in claim 1 with suitable guides controlling direction of the movable top hinge pivots.

3. A swinging device as in claims 1 & 2, with both sets of hinge pivots being movable.

4. A swinging device as in claim 3, but having one hinge pivot being fixed and the other pivot moving the full length of the swing frame.

5. A swinging device as in claims 3 & 4, wherein the pivot change is made by rotating screw threaded spindles on which the pivots are positioned.

6. A swinging device as claimed in claim 5, but the pivot change is made by a chain and sprocket arrangement

7. A swinging device as in claims 5 & 6, wherein the motive power is made by hand wheel and chain drive

8. A swinging device as in claim 7, but the motive power is provided by electric motor with reduction gear unit and necessary control switches.

CLAIMS New claims or amendments to claims filed on 5.5.87 Superseded claim 1 New or amended claims: CLAIMS

1. A swinging device movable top hinge pivots, moving in a controlled manner towards or away from each other, giving innumerable varying inclination and gyrations of the swinging seat.