DE75537C - Hydraulic rocking device for beds, chairs, rest bearings and the like - Google Patents

Description

IMPERIAL

PATENT OFFICE / ^

The present device is used to make beds, couches, rocking chairs and the like. to give a slow rocking motion.

The frame supporting the bed and so on has cutting edges or pivot points in order to easily and noiselessly a swinging bezw. to be able to perform rocking motion. This rocking movement is carried out according to one embodiment through the mediation of a vibrating hydraulic cylinder, in which a stamp moves, which with is associated with the frame; then pressurized water into the cylinder left, one end of the frame is lifted. The weight of this frame and the part carried by it is so arranged, or it becomes a suitable one special weight attached in such a way that the compression ram is pressed inwards again, if the water can escape from the cylinder. On the water supply pipe is a special shut-off and control valve provided, which can be set by hand can bezw to change the speed of movement of the device. turn this off completely to be able to. The outlet pipe is also conveniently provided with a control valve. Facilities that come into effect automatically can be made, which take into account the different positions of the person on the frame.

Instead of the hydraulic press described above, any other hydraulic press Device or a motor are used, which a slow up and down Able to transfer movement to the frame.

Above or next to the frame, a compartment device can be attached, which is actuated by means of the rocking device.

In the accompanying drawing, Fig. 1 is a side view, partly in section, Fig. 2 is the Top view and FIG. 3 the front view of the device.

The rectangular frame A is used to hold the bed, pillow or seat; he receives the pin or cutting edge A, which are attached in the middle of the two longitudinal beams and their bearings BEZW on the beams. Have pans. According to the illustration, the frame A consists of intersecting strips A _i made of metal. The motor causing the oscillating movement consists of an upright hydraulic cylinder B with the punch B ₁ , the upper end of which is hinged to a transverse rod B ₂ which is attached to the frame A at the bottom at a suitable distance from the axis of oscillation of the same. The cylinder B can perform a slight oscillating movement around the lower end in order to adapt to the corresponding movement of the frame A. For this purpose, the lower end of the cylinder B is hinged to a piece B ₃ which is connected to a water inlet pipe B ₄ and to which a water outlet pipe B _{5 also} connects. Both pipes B ₄ B ₅ are equipped with distribution valves CD, as well as with control

valves C ₁ D ₁ provided, the latter can be moved by lever C ₂ D ₂ . The lever C _{2 of} the inlet valve is connected by a rod C ₃ to a lever C ₄ , which in turn is connected to a hand lever C _{6 by a rod C 5} . The lever D _{2 of} the outlet valve is also connected to the rod C _5. The lever D ₂ has a slot near the end into which a pin enters, which is adjustably fastened _{in a slot of the rod C 5.} It has been found advantageous to open the outlet valve D ₁ further than the inlet valve C ₁ , and in order to be able to change the degree of adjustment, the rod C _{5 is} connected to the outer end of the intermediate _{lever C 4} and that lever is given one Slot in which the pivot pin of the rod C ₃ can be fastened in an adjustable manner. In this way the _{movement transmitted through the rod C 3} to the intake valve lever C _{2 is} made variable.

The pressurized water can either be a suitable pressurized water source, which is sufficient Pressure gives, taken, or it can be provided an accumulator, which through a pump is fed.

When water is let into the cylinder B under pressure, it lifts one end of the frame A into the position shown in FIG. At the same time, the falling end of the frame causes one end of a long lever E ₁ , which is rotatably mounted on a column E ₂ , over which it protrudes, to go down through a rod E, the fastening of which on the frame can be made adjustable against the center of vibration. The other end of the lever E receives a fork Ε _Ά , into which a rod F occurs, which is attached to a swing lever .F ₁ rotatably mounted in F ₂ . The fork allows the lever E _{1 to} move a certain distance from the end positions before it acts on the rocking lever F. The latter is connected by rods GG ₁ to levers G ₂ G ₃ , which actuate the distribution valves C-D. The rocking lever F either has a shallow groove at the top or consists of two rods which are arranged a short distance from each other and on which a heavy ball H runs from one end of the lever to the other, depending on the lever to one or the other side is inclined. In order to avoid noise, leather or the like is attached to the top of the lever F ₁ , on which the ball H rolls, and stops F _{3 are} provided at the ends, which are also covered with leather or the like and bent a little to the Avoid jumping out and ricocheting the ball.

As the frame A moves, as soon as it approaches the end of its stroke, the rocker arm F _{1 is turned} sufficiently so that the ball H rolls towards the other end, the weight of the ball when it has reached the opposite end , the movement of the lever is completed and the switching of the valves C D completes .

Instead of immediately draining the water that was active in cylinder B , it is first used to compensate for a change in the position of the load on frame A. To this end the water is passed through the Auslafsrohr B ₅ in a high reservoir J, from which it passes through an overflow pipe J ₁ in a Ablafsrohr J. ₂ The outlet pipe S ₅ is connected to a ball valve housing K , the upper part of which is in direct connection with the reservoir J. This has a horizontal partition with a channel, the lower side of which is connected to a pipe K _y . The channel in the septum is equipped with a valve which is connected by a rope or a wire to a lever L which is loaded _{by a ball L 1.} This ball L ₁ is partially counteracted by a control weight L ₂ which is attached to the lever L. The pipe K ₁ is connected to a vertical pipe K ₂ , which goes up through a pipe in the reservoir and also continues down to a ball valve housing K ₃ , which on one side with the pipe J, on the other is in communication with a pipe M , which connects through a hose M ₁ to a pipe M _{2 of} the frame A and leads to a container M _{3 of} the latter.

The device shown is made in such a way that the head end of the frame does not descends below the horizontal; this facility can, however, if necessary be changed.

The valve housing K ₃ corresponds to the housing K with regard to its internal arrangement and the valve in the same is connected to the opposite end of the lever L.

The functioning of the water ballast device is as follows:

If the person moves on the frame in such a way that the weight becomes too greater after the head end, the punch B ₁ rises less quickly or not at all, and the effective pressure in the cylinder B becomes somewhat greater. This increase in pressure takes effect in a narrow pipe N which starts from one of the pipes S ₄ or B ₅ between the cylinder B and a valve C or D and is connected to a flexible pipe N ₁ which is fixed at one end and the other closed end is connected to the lever L by a cord N _2. The greater pressure tends to stretch the flexible tube N _{1 and thereby}

Claims (2)

pulling the cord N2 downwards, which pulls one end of the lever L down so that the other goes up. The valve in the housing K3 is thereby raised and allows water to pass into the drain pipe J2 from the container M3 at the head end of the frame A. This container contains more or less water when the device is in use; a small air tube M1 is also associated with the container. The opposite effect occurs when the weight against the head end of the frame A decreases, with the valve in the valve housing K3 closed, while the valve in the valve housing K is open and water from the container J into the container M3 at the head end of frame A. The adjustable weight L2 on the lever L not only balances the weight L1, but also prevents the lever L from opening the valve in the valve housing K too quickly when the valve in the housing K3 closes. As mentioned, the weight L2 is suspended from the lever with an eyelet and rests on the lid of the container, unless there is such a great difference in pressure in the cylinder B and the tubes ATiV1 that the weight L1 outweighs the other weight L2 . The hand lever C6 for adjusting the control valves C1 D1 can be associated with a clockwork, by means of which the operation of the apparatus can be changed as desired, e.g. B. such that a very slow and gradual closure of the valves is brought about. So z. B. a person who is stretched out on the frame, first cause a relatively fast rocking movement, but gradually slows down over a certain period of time. At the foot end of the frame A, a container A5 is attached, which is used to hold weights to balance the weight of the person. In Fig. Ι a device for attaching a fan device P is indicated. It can be set in oscillating motion about an axis P1 by means of a rod P2, which rod is articulated to the fan device and, on the other hand, engages a crank P3 on a shaft which carries a disc P4 through which one on opposite parts of the frame A. attached cord P5 leads. Patent claims: 1. A hydraulic rocking device for beds, rest beds, rocking chairs and the like, consisting of an articulated hydraulic cylinder (B) fed by pressurized water, the stamp of which (BJ acts against the tilting frame (A) and whose pipe connections are equipped with valves in this way , that the control of the distribution valves (C D, Fig. 3) by means of the tilting frame (A) itself by a rocker arm (F ₁ ) with rolling ball (H) takes place automatically, while the movement of the control valves (C ₁ D ₁ ) a hand lever (C ₆ ) or a clockwork is initiated. 2. The one embodiment of the mentioned under 1. rocking device, wherein the outgoing through the pipe (B _s) from the Prefscylinder water reservoir to a high (J) is fed to the same (by an excess riser (J ₁₎ a water ballast tank M ₃ ) to be supplied on the tilting frame (A) , while the valve of the valve housing (K ₃ ) connected in this line by tightening the load-balanced and adjustable lever (L) by means of a cord (N ₂ ) while transferring pressure from the cylinder A pipe (N) with the flexible pipe section (N ₁ ) allows the automatic emptying of the ballast box (M ₃ ) , which fills up again after pressure equalization when a valve connected to the same lever (L) opens in the housing (K). 1 sheet of drawings.