US1607925A - Portable bed - Google Patents

Description

Nov. 23 1926.

N. SINCLAIR PORTABLE BED Filed April 14, 1924 INVENTOR.

ATTORNEY.

Patented Nov. 23, 1926.

, stares s'rrss NEIL sINoL A'IR, or OAKLAND, CALIFORNIA.

' PORTABLE BED.

Application filed April 14,1924. Serial No. 706,241.

My invention is particularly adapted to folding beds adapted to be rolled about the floor or into or out of a closetor receptacle from the room in which the bed is to be used.

vl/here the bed is folded or Lip-ended in the conventional manner, it is desirable that the base or supporting portions should extend only over the necessary area to support the bed in said collapsed position, thus economizing in floor space.

On the other hand when the bed is let down into position for use, because of the shifting of the centerof gravity it is necessary that points of support embrace a much greater area as only in this way can the bed be maintained in stable equilibrium throughout its movement.

In the bed of my invention I employ fixed points of support supplemented by movable points of support, the movement of the said supports being accomplished automatically when the bed is either opened out or collapsed.

By referring to the accompanying draw-v ings my invention will bemade clear.

Fig. 1 is a fragmentary plan view of one of the movable supporting elements.

Fig. 2 is a side elevation of a folding bed employing my invention in its down or usable position.

Fig. 3 is similar to Fig. 2 except the bed is up-ended in a collapsed position.

Fig. 4: is a fragmentary side view of an alternate construction employing my invention.

Throughout the figures similar numerals refer to identical parts.

The head piece of a conventional bed frame is indicated by the numeral 1, a foot portion at- 2 and the body portion at 3. The latter is pivoted at 4 to the frame member 5, rigidly connected with the base 6. The base 6 is supported by a plurality or rollers as 7, 8, and is provided on each side with aligned pivots 10, 11, fixed with the frame 6 and from which pivots extend the arm or trussed movable members 12, 13, freely pivoting about 10 and 11. The arms 12, 13, are

0 rigidly fixed in the head 14 on which is swiveled the roller 15.

Pivoted at 16 from the body portion 3 is the link 17 whose other end is pivoted at 18 to the arm 13, these pivots being adapted to swivel to take care of the universal movement of the arm or a ball and socket connecti'on may be substituted if preferred for .the pivotsand swivels at each end of the weight of the body portion 3 and foot piece 2 with the bed clothes thereon would carry the center of gravity of the whole structure beyond the support of the rollers 8, and to prevent the bed overturning at such time the arms 12, 13, are forced to swing about the pivots 10, 11, causing the rollers to swing around from the full line position of Fig. 3 to the dotted position of Fig. 1 and full line position of Fig. 2, thus giving a point of support horizontally well beyond the vertical center of gravity of structure at all times. It will also be seen that the action is automatic and that when the bed is collapsed in Fig. 3 the extending arms 12, 13, head 14:, and roller 15 are folded out of the way so that no greater floor space is required for the up-ended bed than is absolutely necessary.

While I have shown and described but one side of the bed it is to be understood that the preferred construction involves the use of the swinging arms 12, 13, and roller 15, on each side of the bed which swing inward or towards each other when the bed is upended and swing outward to give the in creased base when the'bed is let down.

In Fig. lis shown a variation of my invention wherein a movable base portion is shown at 21, which is given a parallel horizontal movement by the arm 22 swinging about the pivot 23 under the control of the lever 24 and the link 25, the roller 26 swivels on the member 21 and as the bed body portion 27 is let down from the full line position intothe dotted position the roller 26 moves outward from the full line to the dotted position thus increasing the area of the supporting base as the center of gravity of the structure is shifted due to the movement of the body portion 27.

In this construction the head portion is shown at 28 and rigid therewith is the frame loo llU

29 carrying the main pivots 30 of the body portion of the bed and a stationary pivot at 31 for the link 24%.

It will now be seen that various combinations of levers, links or their mechanical equivalents may be employed whereby the points of support may be shifted outwardly as the bed portion descends, or collapse into a reduced area when the bed is tip-ended, and I wish to be understood as claiming all such.

I claim:

1. In combination with a bed having a folding portion and a base frame, a plurality of foot members positioned to support the up-ended bed, an arm pivoted on a vertical axis from said frame, support means on said arm adapted to swing in the Saint plane as said members, a single link swivelled at one end to the folding portion of said bed and swivelled at the other end to said support means whereby the arm and support means is swung outward as the bed is let down and swung inward into collapsed position as the bed is "up-ended.

2. The combination of a supporting frame with a bed pivoted near one end on a horizontal axis to said frame to swing from a vertical to a horizontal position, a pair of auxiliary legs pivoted on vertical axes respectively to said frame, and a link for each of said legs respectively each connected by universal connections to the bed and a leg whereby the legs will positively be swung horizontally on their axes in coextension wi h the bed as the same is lowered and drawn in ward in a direction at right angles to the sides of the bed, as the same is raised to vertical position.

NEIL SINCLAlR.

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