US2590727A - Self-contained rotary device - Google Patents

Description

March 25, 1952 F. SCOGNAMILLO 2,590,727

SELF-CONTAINED ROTARY DEVICE Filed Feb. 21, 1949 2 SHEETS-SHEET 1 Elmo/Wm A'TTOlP/VE Y March 25, 1952 F. SCOGNAMILLO 2,590,727

SELF-CONTAINED ROTARY DEVICE Filed Feb. 21, 1949 2 SHEETSSHEET 2 y efifi m Patented Mar. 25,1952

SELF-CONTAINED ROTARY DEVICE Frank Scognamillo, Bronx, N. Y., assignor: to: Scognamillo Engineering" Company,v Bronx,

Application'Februai-y 21, 1949, Serial No. 77,649

2. Claims. 1 This/invention relates'torotary devices particularly of the self-contained rotary pump, engine, or compressor type; and in particular a rotary device having a dual blade such as a blade having asmal'lerblade contained therein and resiliently urged outwardly for wiping contact with the inner peripheral surface of a cylindrical pump chamber, and wherein arotor in which the blade is positioned is journaled on a core eccentrically positionedin the pump chamber and extended from one end of the housing cover continuously through the rotor.

The purpose of this invention is to provide an improved type of construction for rotary devices wherein ablade driven by a driving flange on a power actuated shaft drives a rotor in which the blade'is positioned around a shaft or core whic is'stationary in the device.

This invention is an improvement over the blade driven rotarypump of a former application ofmy father, Salvatore Scognamillo, deceased, which application was filled December 18, 1948,

' with the Serial Number 66,693, and also on a copending application filed June 16, 1948, with the Serial Number 33,407, and furthermore of a pump of theprior Patent Number 2,443,994; the above copending applications and patent having been assigned to the Scognamillo Engineering Company, to which the application isalso assigned by an assignment filed herewith. The improvements of this invention being in that the shaft'extends continuously through the device and rotor, and the rotor is journaled on a shaft formed by a core extended inward from an'end of. the housing, and the blade provides a cradle foran auxiliary inner blade providing a blade within; a blade and with the blade forming the cradle held'by a floating and traveling ring and flange through extending pins having cylindrical heads;-

A further improvement contemplated in this invention is in the'novel' construction and adaptationof a dual blade in that the auxiliary blade isself-contained therein and in continuous contact against the surface of the surrounding housingnfree from the reciprocal action of the outer blade? positioned in the rotor slot.

In'the usual type of rotary device such as a pump, engine, compressor, or the like the blade or blades slide inv and out of a rotor fixed on or integral with a shaft, and in the improved device of theabove-noted application where the rotor is freeor floating the'rotor is carried by a comparatively small pin which provides a limited bearing'surface; With this thought in mind; this improved device provides a relatively large sta- 2 tionary core which extends throughthe rotorand on which the rotor is freely slidable and'wlththe parts arranged in this manner'it'ishpossible to extend the drivingshaft'straight through the device with bearings at both ends.

The object of this inventionis, therefore, to provide an improved type of construction for rotary devices wherein a floating rotor is journaled on a large core or shaft and wherein the shaft extends through the rotor;

Another objectvof the invention is to provide a rotary device having a dual self-contained blade wherein an inner blade is carried by a larger blade which provides a cradle or carrier for the small inner blade.

Another object of the invention is tov provide arotary devicewherein a floating rotor! is 1'0- tated by a blade or a plurality of blades in which the blades are actuated by a 'driving. flange through longitudinally slidable pins with cylindrical heads, andwherein the'heads of the pins in the opposite ends of the bladesare positioned in sockets in a floating ring. 7

A further object of the invention is to provide an improved rotary device having dual blades with pins having cylindrical heads and a rotor iournaled on a stationary core which is of a comparatively simple and economical construction.

With these endsv in view the invention embodies a rotary device having a housing with inlet and discharge connections in which a dual blade is positioned in a slot in a rotor journaled'onan eccentrically positioned stationary core through which a driving shaft extends and the rotor is actuated by the blade which is driven by a driving flange keyed to the driving shaft.

Other features and advantages of the inve tion will appear from the'following description taken in connection with the drawings, wherein:

Figure 1 is a view showing an end elevation. of the housing of the device with-the cover plate and core removed and with parts shown in section.

Figure 2 is a longitudinal section through the device with the blade shown in elevation.

Figure 3 isa longitudinal section through the dual blade. 1

Figure 4 shows an end elevation of the blade.

Figure 5 is a cross sectional view of a modified form of blade wherein an inner blade is replaced by a wearing or wiping strip.

Figure 6 is an end view of the cylindrical headand pin of one end of the blade.

Figure 7 is a view showing a side elevationof the pin. and head.

Figure 8 is a longitudinal section similar to that shown in Figure 2 showing the housing and core with the moving parts removed.

Figure 9 is an elevational view of the cover plate and core with part broken away.

Figure 10 is a cross section through the driving flange.

Figure 11 is an end elevation of the driving flange.

, Figure 12 is floating ring.

Figure 13 is a cross section through the floating ring.

Figure 14 is a longitudinal section through the rotor on a slightly reduced-scale.

Figure 15 is a similar view showing a modification wherein the intermediate part of the rotor is cored away.

Referring now to the drawings wherein like reference characters denote corresponding parts the self-contained rotary device of this invention an end elevational view of the includes a housing In made up of opposed end walls, one of these the cover plate H, connected by a .cylindrical peripheral wall forming with the end walls a substantially cylindrical chamber,

with a driving shaft I2, a rotor l3, a driving flange M, a blade I5, providing a cradle, and a floating ring [6, and wherein the floating ring is journaled on a hub IT on the inner surface 01' the cover plate and the rotor is journaled on a core l8 extended from the hub of the cover plate.

The housing is provided with a hub 19 and a similar hub 20 is provided in the cover plate which is bolted to the housing by bolts 2| and the shaft 12 is journaled in these hubs which are aligned as shown in Figure 2. The shaft also extends through and is journaled inthe core l8.

and'the driving flange i4 is mounted on the shaft and secured in position thereon by a key 22 that extends into a keyway 23 in the flange. The hub I9 is provided with an annular recess 24 in which the hub 25 of the driving flange is positioned.

The dual blade [5 is formed with a longitudinal slot 26 and a bore 21', as shown in Figures 3 and 4, and a Wiper or inner blade 28 is positioned in the slot and resiliently held outwardly by springs 2% and 30, which are held against ledges 3| and 32, respectively. It will be understood that springs of any other type or design may be used and also that the blade may be urged outwardly by any other suitable resilient means. The blades are provided with pins 33 having cylindrical heads 34. the pins being free to turn and slide lengthwise in the bore 21, and the head at one end of the blade being positioned in an opening 35 in the driving flange I4 with the head at the opposite end positioned in an opening 36 of the v floating ring l6.

The rotor I3 is provided with a bore 31 to receive the core l8, and a slot 38 in which the cradle or dual blade I5 is positioned, and in the design shown in Figure 15, the intermediate part lindrical heads 46 at the ends that fit into the openings 35 and 36 of the driving flange and floating ring respectively, and this blade is provided with a wiping strip 41 that contacts the inner peripheral surface 48 of the rotor chamber 49 in which an open crescent-shaped area 50 is provided, as shown in Figure 1.

With this improved type of construction the rotor, which is in the form of a sleeve travels freely around a fixed or stationary core which is part of the housing and this provides a continuous crescent area through which the blade or blades ar driven, and with the cylindrical heads at the ends of the blade free to slide longitudinally of the blade any unevenness of the parts is compensated for and smooth and balthe parts without departing from the spirit of the invention.-

What'is claimed is:

1. A rotary machine of the character disclosed comprising a housing having opposed end walls connected by a cylindrical peripheral wall and forming therewith a substantially cylindrical chamber, said peripheral wall having spaced inlet and outlet ports open to said chamber, a shaft journaled in said end walls concentric with said cylindrical chamber, a cylindrical flange fixed on said shaft at the inner face of one of said end walls and having a cylindrical socket in the peripheral portion of the same open to said chamber, a cylindrical ring journaled on said opposite end wall concentric to said chamber and havinga cylindrical socket in the peripheral portion of the same opposed to said socket in the flange, a stationary cylindrical core projecting from said opposite end wall to the inner face of said flange, a cylindrical rotor journaled on said core eccentric to said chamber and in running engagement with the peripheral wall between said ports. said rotor extending full length between said flange and ring and having a substantially radial slot in the periphery of the same and a blade slidably engaged in said slot and having running clearance with said peripheral wall, said blade having cylindrical heads at the opposite ends of the same rotatably engaged in said sockets in the flange and ring, respectively.

2. A rotary machine of the character disclosed comprising a housing having opposed end walls connected by a cylindrical peripheral wall and forming therewith a substantially cylindrical chamber, said peripheral wall having spaced inlet and outlet ports open to said chamber, a shaft journaled in said end walls concentric with said cylindrical chamber, a cylindrical flange fixed on said shaft at the inner face of one of said end walls and having a cylindrical socket in the peripheral portion of the same open to said chamber, a cylindrical ring journaled on said opposite end wall concentric to said chamber and having a cylindrical socket in the peripheral portion of the same opposed to said socket in the flange, a stationary cylindrical core projecting from said opposite end wall to the inner face of said flange, a cylindrical rotor journaled on said core eccentric to said chamber and in running engagement with the peripheral wall between said ports, said rotor extending full length between said flange and ring and having a substantially radial slot in the periphery of the same and a blade slidably engaged in said slot and having running clearance with said peripheral wall, said blade having cylindrical heads at the opposite ends of the same rotatably engaged in said sockets in the flange and ring, respe'etii ely, said heads at the ends of I the blade comprising pins rotatably and slidably engaged in the" ends of the blade and having enlarged cylindrical end portions engaged over the ends of the blade.

FRANK SCOGNAMILLO.

RitFERENcEs CITED The following references are of record in the file of this patent:

- Number 10 Number UNITED STATES PATENTS Great; Britain Jan. 15, 1937

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