US 919036 A
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Description (OCR text may contain errors)
2 SHEETS-SHEET 1.
Patented Apr. 20, 1909.
APPLICATION FILED MAR 22, 1905.
fl n/ GER INVENTOR BY g, ATTORNEY.
APPLICATION IILBD MAR. 22, 1906.
9 1 9,03 6. Patented Apr. 20, 1909.
2 8HEETS8HEET 2.
ject of the Emperor of Austria-Hungary, re-
. ments in Valves, of which UNITED STATES PAUL LANGER, OF MILWAUKEE, WISCONSIN.
Specification of Letters Patent.
v Patented April 20, 1909.
Application fiue'a flare-i1 22, 1905. serial ms. 231,4'29.
To all whom it may concern:
Be it known that 1, PAUL LANGER, a sub:
siding at'Milwauke'e, in the county Milwaukee'an'd State of WVisconsin, have iiivehted certain new and useful Improve the following is a specification.
This invention relates to a valve for compressors and the object of the invention is to secure an easy closing of the valve avoiding all shoc k and consequent wear.
On the drawing,'Figure 1 is a plan view of the valve and seat. Fig. 2 is a vertical section of the valve and seat in the closed position of the valve. Fig. 3, a similar view of a multiple ported valve and its seat in the 0 en position of the Valve. Fig. 4 i'sa vertlcal section of a modified valve and seat. Fig. 5 is a plan view of the valve shown by Fig. 3, Fig. 3 being a section taken on the line H of Fi 5. Fig. 6 is a plan view of the outermost amina. Fi 7 is a plan view of the middle lamina, an Fig. 8 is a plan view of the innermost lamina.
The valve, Figs. 1, 2 and 3, is laminated and made up of plates'2, 3, 4, preferably of different thicknesses. The laminae or lates of the valve are desi ned to have d' erent seat' tendencies. his result may be accomplishedin various ways. When so desi ncd, the (plates comprising the valve will, w en close be opened by various degrees of force. The plates are held in place on the seat 5 in an convenient way, that shown being by a p ate 6 and bolts 7. The plates are ported, exce t the outer one, in such a Way that inner p ates have less effective surface than outer plates. That is the ports 8, 9, in the plates are directly in line with the port 10 in the seat 5 and the effective surface of plate 4, namely, the area of port 10 minus area of port 9,is less than the effective surface of plate 3, namely, the area of port 9 minus area of'port 8.
Figs. 1 and 2 show the valve with the plates 3, 4 having a single port each, butthis is conventional only'and merely so shown to indicate clearly that the inner plates have less effective surface than the outer plates.
Fig.3 shows the preferred and practicable structure wherein the total area of porting for a single plateis distributed over a plurality of ports. The ports are all conveniently of the same size, though this is not necessary, it being essentialthat some of the form of rings 22, 23, 24. These 'latejs are of.
the same thickness and are ur' e to the seat 25 by different forces exerte I by different lengths of the same Strengthef spiral spring.
' Thus, considering the plates to act independently of each other, the plate 22 is urged to seat by the spring 32; the late 23 by a shorter and consequently s't' er spring 33; I and the plate 24 by a still shorter and consequently stiffer spring 34. The springs bear at their lower ends conveniently against the plates just outside shoulders 42', 43, 44; and at their u or ends against asuitably stepped ca 37 held rigidliv a olt 38 screwe into the seat 25'. i
The plates are ported 28,. 29, as, before ,to re ister with ports 20 in the seat 25:
he 0 eration is as follows: The underin place by a net 39" ape-n 1 lying principle which overns the action of this valve is that the hermit plates, members or laminae are caused to move only when acted upon by different ressures, forexam is, taking specifically t e constructions own byFlgs. 3, 5, 6,7 and 8, and assume the valve to be closed with the several laminae in contact and the one indicated by the numeral 4 in contact with-the seat 5. If, now, a fluid is exerting pressure through the port 10 against said valve, said fluid w1ll be exerting pressure against each one of the laminae 2, 3 and 4; but the valve is so proportioned that when the gessure reaches a certain point, it will be su cient to ralse thelamina 2 from lamina 3, allowing the fluid to flowthrough ports 10, 13, 11, 16, 12, 160 and 120, and out between lamina 2 and 3. If, now, the pressure exerted by the fluid increases, lamina 3 will be raised, the fluid acting upon it throu h ports 10, 15, 14 and 140, and the fluid w1ll now flow out between laminae 3 and 4, aswell as between laminae 2 and '3. If, now, the pressure exerted by the fluid increases sufficiently, lamina 4 will be raised from the seat 5 and the fluid will flow between laminae 2 and 3, 3 and 4, and between. lamina 4 and seat 5. It is probable that when the several laminae have been successively unseated that the greater portion of the fluid will escape from port 10 between lamina 4 and the seat 5, being a more direct passage than through the ports 14, 15, 16, 140 and 160 of lamina 4, and ports 11, 12 and 120 of lamina 3, so that the laminae or plates would probably be in proximity each to the other though slightly separated. If, now, the volume of fluid passing through the port 10 diminishes, the pressure exerted by it upon the lamina 4 will diminish, and at a certain pressure lamina 4 will close against the seat 5, the ressure exerted by the fluid passing throug the ports 13, 14, 15, 16, 140 and- 160 of plate 4 being sufficient to retain plates 3 and 2 away from plate 4. Upon a further drop in the pressure of the fluid, plate 3 will be permitted to seat against plate 4, plate 2 being still retained away from plate 3 while in a further reduction of the pressure exerted by the fluid, plate 2, which is imperforate, will seat against plate 3 and the valve will be closed.
The valve being open and presumably the plates together, on lessening of the flow of air, the inner plate being more strongly urged to its seat Will separate slightly from the next plate and this for the same reason from the neXt and so on, the escaping air securing access between the plates through the porting thereof. The plates will therefore close in series and no excessive or harmful shock will be produced.
In accordance with the provisions of the patent statutes, I have described. the principle of operation of my invention, together with the a paratus which I now consider to represent t e best embodiment thereof but I desire it to be understood that the apparatus shown is merely illustrative and that the invention can be carried out by other means.
What I claim is,
1. A valve including laminmand provided with a face, a lamina of the valve nearer the face of the valve offering greater resistance to unseating than a lamina more remote from the face. i
2. A member provided with'a port, and superposed plates, one of which is imperforate and another of which is provided with a port, the imperforate plate offering less resistance to unseating than the plate provided with a )ort. 1 3. A valve seat and a laminated valve having independent laminae, the seating tendency of a lamina near the seat being greater than that of a lamina more remote from the seat.
4. A laminated valve having superposed independent plates, the thickness of the plates progressively increasing to the lamina which is adapted to contact with a valve seat.
In testimony whereof I afhx my signature in presence of two witnesses.
. PAUL LANGER.
IVitnesses MAX ROTTER, JoHN DAY, Jr.