DE83580C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The subject of the present invention is a vacuum pump with continuous operation and refers to a pump that draws air from glass bulbs necessary for incandescent lighting are intended to be pumped out. .

In order to perfect the vacuum pump, the inventor designed the pump so dafs ι. the air inlet is on the side of the pump cylinder to avoid that a skin of oil or liquid surrounds the valve, 2. the air inlet close to the bottom or near the beginning of the suction, so that said air inlet is open at the beginning of the stroke in order to be open as long as possible of the air inlet during which the air will enter the cylinder can, and thereby also to induce that the diluted air already in the short Movement of the piston is sucked into the cylinder. Funding is also provided to close the said air inlet quickly at the end of the piston stroke so that the in Air sucked into the cylinder by the piston does not return to the glass bulbs can before the piston has completed its return stroke and covered the air inlet.

Two pistons are attached inside the pump cylinder, one of which is moves inside the other, which latter opens the air inlet and sleeps, with at the same time a cylinder is formed in which the other piston, which the air drives in and drives out, moves.

These pistons, which are best provided with valves, can be in any Move wise. Oil or some other fluid under pressure is called the moving force applied. When hydraulic pressure is applied, the movements of the piston should be better controlled in order to make pumping easier.

Two vertical pumps are built on plate A , both of which have the same construction, so that the description of one of them will suffice.

Inside the cylinder B there are two mutually independent pistons e and f , of which the former ' (e) is provided with suitable piston rings e ^{1 on its sides.}

The top and sides of the piston e are shown as independent parts attached to one another, but the whole piston may be made in one piece if necessary.

Inside this cup-shaped piston e, which in fact has a second movable cylinder. the inner piston f is arranged, which is shorter than the outer piston e, and is best constructed like a sleeve. The lower side of the same has a conical recess which corresponds to the conical cylinder cover b and which the piston f contacts after the end of the stroke. The piston / is provided on its lower side with one or more valves f ¹ that open upwards. Its upper side has openings f ^s . This piston is with OeI

Claims (1)

or another liquid completely filled. The piston e is provided at its head with outwardly opening valves e ³ , while the upper cylinder cover b ¹ has outwardly opening valves b ⁴ . The piston e is attached to the lower end of the circular piston rod e ⁴ , which runs up through the cylinder cover b ^l and goes through the lower cylinder cover c of the cylinder C and enters the latter, where it is provided with a suitable piston e ⁵ . The piston f is attached to the lower end of a piston rod / ⁴ which is extended upwards by the tubular piston rod e ⁴ and passes through the upper cylinder ^{cover c 1 of} the power cylinder C ¹ into the latter, which is provided with a suitable piston f ⁵ . The flasks E and / are jointly ⁵ / moved from their drive piston ⁵ e d thereby open the Lufteinlafs. The outer piston e (closing piston) has a shorter stroke and reaches the end of its stroke considerably sooner than the piston / and begins its back and forth movement before the piston / has completed its upward movement. The two pistons meet just before the piston e has reached the end of its downward movement, or just when it has passed the air inlet and closed it to lock the cylinder from the glass bulbs. The two pistons now go down together until the closing piston e has reached the end of its stroke, whereupon the piston e stops until the inner or main piston / has completed its downward movement and touches the lower cylinder cover b. This downward movement of the main piston / causes the air which was drawn into the cylinder during its upward movement to be driven upwards and, by opening the valve / ² , to the oil or liquid within the piston. The air then passes through the openings / ^s into the auxiliary cylinder, which is formed within the piston e and between the piston e and /. With the next upward movement of these two pistons, the diluted air is guided upwards ... between the two pistons until the outer or closing piston e reaches the end of its stroke and another upward movement of the piston / inside the piston e together with the back and forth movement of the Piston e causes the diluted air contained between the two pistons to be compressed until the two pistons meet, the air compressed between the two pistons through the valves e ³ into the space between the piston e and the piston Cylinder cover b ^{1 is} driven out, in which it is compressed during the next upward movement of the piston e and is driven out of the cylinder B when the piston e reaches the end of its stroke and opens the valves b ^i. The air expelled in this way flows into the open air through opening N. Patent-Α ν saying: A vacuum pump with continuous operation, characterized by two pistons (efj working in one another but independently of one another, which move partly in the same direction, partly in opposite direction in the closed pump cylinder (B) , of which the outer piston (e), which is designed as a cylinder, at the same time serves as a closing piston for the air inlet (a) , which is located at the bottom near the bottom of the pump cylinder (B) , while the inner piston (f) can be made hollow, for the purpose of receiving oil, which is a good one Completion of the bottom valve (f ² ) should provide. For this purpose ι sheet of drawings.