US727171A - Rotary pump. - Google Patents

Description

PATENTED MAY 5, 1903.

A. MAYER. ROTARY PUMP.

nrmoumn rum) 007.9, 1902.

10 MODEL.

ject of the Emperorof Austria-Hungary, re-

UNITED STATES Patented May 5, 190

PATENT GE I AUGUST MAYER, OF BUDAPEST, AUSTRIA-HUNGARY.

. 1 'RQTARY P MP.

SPEGIFIGATIONforming part of rates Patent No. 727,171, dated May 5, 1903.

Application filed October 9, 1902.

To all whom, it may concern:

Be it known that I, AUGUST MAYER, a subsiding at Budapest, Austria-Hungary, have invented certain new and useful Improvements in Rotary Pumps, (for which l'have applied for Letters Patent in Germany o'nthe- 28th day ofJauuary, 1901',) of which the following-is a specification. 1

My invention has for its object to so con-f struct a rotary pump that it will continuously create a vacuum-chamber on the suction side thereof and concurrently therewith will -forcibly close a corresponding chamber on the discharge side to expel its load of water; and to this end it consists in the employment of independently-movable sector-pistons in the cylindrical pump-casing, with mechanism for rotating them and simultaneously causing them to open away from each other to form in succession vacuum-chambers and for moving them up against each other to forcibly close said chambers, all as will hereinafter" appear.

In the drawings, Figures 1- to l are diagrammatic representations of the pistons in successive stages of action, Fig. "2 is a ver-' tical section through the pump transversely to the line of the actuating-shaft. Fig. 3 is a vertical section at right angles to the foregoingthat is, coinciding with the axis of i said shaft. Fig. 4 is a section similar to Fig. 2, but with the piston in a more advanced stage of action and showing an alternative mounting of the wrist-pins.

G is the casing of the pump, tightly closed by heads K and J and partly encircled on one side by the suctionfchan'nel or, opening from the suction-pipe b, and on the other by the force-channel at, opening into the force-pipe I). These sector-shaped wing-pistons M, M, and M are mounted upon the conical sleeves or shaft-sections 'L, so as to readily turn thereon. In each of the wing-pistons is mounted a wrist-pin dd d having loose sleeves'e e 6 upon theirprojecting' ends. The drive-shaft K is fixed to the face-plate O, and both are mounted eccentrically to the axis of the pumpcylinder. The face-plate has three radial symmetrically-spaced slots 0 c 0 with which the sleeves of the above-mentioned wrist-pins Serial No. 126 ,6 18. (No model engage. The regulating-disk N, through which the sectional shaft L is passed, is adjusted inward by set-screws h h 650., just so far as necessary for the tight closing in of the wing-pistons, without, however, materially interfering with their easy-running. The set-screw t', Fig. 3, serves for theclosing together of the conical sectionsof shaft L over the roller f, by means of which thewing-pistons are adj u'sted' out against the internal p'eriphery of the""p ump -cylinder, an elastic ring or intermediate piece g being interposed between said' sections. The driving-shaft is passed througha stuffing-box lm and connected therebeyondwith a suitable source of power.

' Instead of' making slots in the face-plate the wrist-pins may be mounted therein and work in slots 0 c o in the respective wingpistons, as represented in Fig. 4., showing such alternative form. The action will be the same either way.

Referring to the diagrammatic representation in Fig. l and assuming a starting position, such as shown in Fig. 1 it will be seen" that the two uppermost pistons M M have'po mein contact with each other upon a li'nel'corresponding to a vertical radius from their axis of rotation and registering with the narrow rib n, which divides the suction-channeljfrom the force-channel at the vertically overhead point of the pump-cylinder, while the lowermost piston M is separated from both, forming two chambers 91 n one opening at the left into the suction-channel and the other at the right into the force-channel. As the eccentric face-plate turns in the direction of thearrow it acts more rapidly upon the wrist-pin d of piston M and moves said piston away from piston M, as shown in Fig.

1 this representing the opening at the incipient end of thesuction-channel, and at the same time it begins to olosepiston M up against piston M. 'By this means a gradually-widening vacuum-chamber is produced between pistons M and M, which sucks in water from the supply-pipe b, while at the same time a gradually-closing force-chamber is effected between pistons M and M to expel water through the delivery-pipe b. As pistons M and M are carried along the suction-channe'l, the vacuum-chamber successively reaches the magnitudes shown in Figs. 1 and 1 the latter being its maximum and corresponding to the moment when it is entirely out off from the suction-channel and also from the force-channel by engagement with cut-0E surface 92 At this instant a perpendicular let fall from the axis will bisect the space between the said pistons, as in Fig. 2, and form, with the starting radius in Fig. 1*, a vertical diameter through the machine. Further movement of the pistons M and M opens the vacuum-chamber filled with water from the suction-channel into the force-channel, where it immediately becomes a force-chamber, since the face-plate 0 now acts to retard the piston M and close the piston M up thereagainst, as represented in Figs. 1 and 1 the latter showing the two pistons on the point of leaving the forcechamber and approaching the starting-point. (Indicated in Fig. 1.)

It will be understood that the action between piston M and pistons M and M is relatively the same as that above described between pistons M and M, so that, as shown by the diagram, there is at all times a vacuum-chamber being opened in the suctionchannel and a force-chamber closing in the force-channel.

The machine may be reversed and Work in the same way, provided water is introduced into pipe 1) and allowed to flow out through pipe 1).

It will be observed that the rib it forms a sharp division between the force-chamber and the suction-chamber of the pistons. On one side the force-chamber is closing up to the time it reaches it, and the advancing piston there comes into contact with the lagging piston in front, after which the instant they pass it, or rather pass the vertical diameter which bisects it, the lagging piston becomes the hurrying one and the previously-hurrying one begins to lag and the suction-chamber commences to form. Thus the closing of the force-chamber practically culminates and the opening of the suction-chamber may be said to commence on the vertical diameter of the pump-cylinder. This, in connection with the fact that the lower cut-off surface is or may be raised, gives an extremely large suction-channel and an extremely large forcechannel to the pump-cylinder and an imporceptible transition from one to the other. After the working contact of the pistons against the casing has been closed by the conical sleeves and the lateral contact also closed by the adjusting-plate N the contact of the pistons at the crown leaves no dead room, and therefore the suction of the pump approaches very near-a complete vacuum, and since this suction is not periodically broken, but acts continuously, the exhaust acts accurately at the greatest permissible depths and without necessity of a foot-valve in the suction-pipe or of priming. The pump also works with entire absence of shock and thumping and without the use of air-chambers.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, in a rotary pump, of a series of sector-formed wing-pistons, a cylinder in which they work, suction and discharge channels partly surrounding and opening into said cylinder on opposite sides thereof, an eccentric face-plate, wrist-pins connecting the pistons with said face-plate, and having a radial sliding movement relatively to one of said members, whereby said pistons are driven at varying speed, to open away from each other in the suction-channel and close toward each other in the discharge-channel, a cut-off rib between said channels at the point of complete closing, and a cut-off surface between said channels at the point of maximum opening.

2. The combination, in a rotary pump, a series of sector-formed ring-pistons, a cylinder in which they work, suction and discharge channels partly surrounding and opening into said cylinder on opposite sides thereof, an eccentric face-plate, wrist-pins connecting the piston with said face-plate and having a radial sliding movement relatively to one of said members, whereby said pistons are driven at varying speed, to open away from each other in the suction-channel and close toward each other in the dischargechannel, a narrow cut-off rib between said channels at the point of complete closing and a raised'cut-off surface between said channels at the point of maximum opening, and corresponding in extent therewith and the center line of which is diametrically opposite the center line of said rib.

3. The combination, in a rotary pump, of a series of sector-formed wing-pistons, a cylinder in which they work, means for rotating them at variable speeds, a sectional shaft composed of two cone-shaped sleeves upon which they rotate, means for adjusting said sleeves toward each other to force the pistons out against the cylinder, suction and discharge passages on opposite sides of said cylinder and cut-offs between said passages.

4. The combination, in a rotary pump, of a series of sector-formed wing-pistons, a cylinder with suction and discharge passages, in

which they work, cut-offs between said passages, means for rotating said pistons at relatively varying speeds, a sectional shaft com posed of two'converging cones mounted upon a bolt or roller, supporting said sections as they rot-ate, a movable plate in one side of the cylinder through which plate the corresponding outer end of said shaft passes, and means for adjusting said plate up against the pistons.

5. The combination, in a rotary pump, of a series of sector-formed wing-pistons, a cylinplate in one side of the cylinder and means :0 der with suction and discharge passages in for setting it in toward said pistons.

which they work, cut-offs between said pas- In testimony whereof I affix my signature sages, means for rotating said pistons at relain presence of two witnesses. 5 tively varying speeds, a sectional shaft com- AUGUST M AYER posed of two conical sleeves and an inclosed bolt or roller upon which they rotate, means Witnesses: I

for setting said sleeves up toward each other BERNARD G. ELLIOT, to adjust the pistons against the cylinder, a LOUIS VAINLOVE.

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