US2347384A

US2347384A - Oil conditioner cartridge

Info

Publication number: US2347384A
Application number: US473476A
Authority: US
Inventors: Charles A Winslow; Laurence L Moore; William G Nostrand
Original assignee: WINSLOW ENGINEERING CO
Current assignee: WINSLOW ENGINEERING Co
Priority date: 1943-01-25
Filing date: 1943-01-25
Publication date: 1944-04-25
Anticipated expiration: 1961-04-25

Description

c. A. wlNsLow ET AL OIL CONDITIONER CARTRIDGE Filed Jan. 25, 194s INVENTUM'r CHARLES` A. W/NSLOW. LAURENCE L. MOORE. BY WILL/14M 61. NOSTR/ND.

QMSJM A TTORNEK Patented Apr. 25, 1944 l OIL CONDITIONER CARTRIDGE Charles A. Winslow, Laurencey L. Moore, and William G. Nostrand, Oakland, Calif., assignors to Winslow Engineering Co., Oakland.` Calif.,

a partnership consistin Catherine B. Winslow, William G. Nostrand g of Charles A. Winslow, Laurence L. Moore, and g Application January 25, 1943, serial No. 473,416 4Claims. (01.'210-187) This invention relates to oil purifying or oil conditioning apparatus for use, for example, with internal combustion engines, and pertains particularly to a filtering cartridge member therefor. It is in the nature of an improvement over the inventions shown and described in the copending.

applications of Charles A. Winslow and Laurence L. Moore, Serial No. 258,653 and Serial No. 430,749, filed, respectively, February 27, 1939, and February 13, 1942.

The inventions of said applications have proven highly satisfactory and are in extensive use, but by reason of the scarcity of certain materials, due to the economic situation brought about by war demands, we have been 4confronted with certain manufacturing diiculties which the present invention is designed to overcome.

To that end, we have developed a cartridge for use in a suitable holder, which dispenses with the use of woven fabric and metal and employs paper or fiberboard elements. No metal parts need be used in the cartridge. Therefore, the filtered oil Vis not deleteriously affected by the corrosive action normally produced by the con'-r tinued action of oil on metal.

Ourinexpensive, replaceable cartridge enables highly eicient filtration of oil, all as will more fully `appear hereinafter.

Having reference to the accompanying drawing, wherein similar characters of reference represent corresponding parts in the several views:

Fig. 1 is a longitudinal, sectional view of one application of use of the cartridge,

Fig. 2 is a longitudinal, sectional View of the cartridge assembly.

Fig. 3 is a cross-sectional view,ltaken on line 3-3 of Fig. 2.

Fig. 4 is a longitudinal, sectional view of a modified form of the cartridge assembly.

Fig. 5 is a cross-sectional view, taken on line 5-5 of Fig. 4.

Fig. 6 is a fragmentary view of a perforation in the tube 3.

Fig. rI is a fragmentary view of a perforation in the tube 2 or 2'.

In our improved cartridge, we employ a central tubular core 2, of fiber or cardboard. of a length corresponding to the length of the finished cartridge. Concentric with tube 2 is a similar and larger fiber tube or cylinder 3, separately spaced from tube 2 and of a diameter corresponding to that of the nished cartridge. In length the tube 3 is slightly shorter than tube 2 for reasons shortly to appear. Both

tubes

2 and 3 are pro'- vided with numerous respective perforations 4-5 Vfor the passage ofthe oil undergoing filtration.

The ends of the outer cylinder 3 are closed by paper caps or covers`6, which are centrally per-l forated to have a snug fit over the slightly pro/- truding ends of the central tube4 2. By means of the caps 6 the concentricity of the two tubes is maintained at all times. The space between the two tubes is filled with a compacted mass of suitablefiltering mat'erial 1, preferably of cotton waste and wood shavings.

After the filtering material has been inserted and the caps 6 placed in position, fiber washers 8 are-pressed over the exposed ends of tube 2 and down tight against the caps 6 to provide reinforcement at these points. A tapered, hollow plug 9, preferably made of wood, with a periph-,

eral flange I0, is then forced in at each end of tube 2 to expand the ends of the tube 2 with the flange I0 resting clamp-fashion against a respective washer. The wooden plugs have such a friction fit with the inner tube that when they are pressed inwardly they holdthe assembled parts firmly together. The cartridge is then ready for use.

It isiunderstood that the

tubes

2 and 3, although of pulp fiber, have suflicient inherent rigidity that they will maintain their shape and position at all times under working conditions.

The mode of use is illustrated in Fig. 1, in which II represents a container or holder similar to that described in the former applications' aforesaid. The container II is inthe form of a cylindrical shell to receive our improved cartridge. The shell has a central pipe I2, provided with perforations I3, which forms an outlet for the oil after filtration.

The pipe is surrounded at one end by a coil spring I4, or other spacer means, on which-rests a washer I4, which latter, in turn, supports the cartridge which is slipped over the pipe I2 and is spaced therefrom by the thickness of the portions of the plugs 3 which telescope the paper tube 2 of the cartridge.

A removable cover I5 fits over the container and is held in place by suitable means, as a screw threaded stud I6, tting into the corresponding end of the pipev I2. The dirty oil to be filtered enters the container at I1 and passes up around the outside of the cartridge, whence it percolates through the perforations 5 in the outer shell or tube 3 of the cartridge and through the filtering material, escaping through perforations 4 in tube 2 and thence through perforations I3 into the outlet pipe I2, cleaned and reconditioned and ready for re-use. v

Figs. 4 and 5 illustrate a simplied construction of our cartridge, wherein the cartridge construction is similar in principle to the embodiment previously described. but diers structurally in the design and assembly of tubular core 2' and cap members 6'. In the modification above referred to the caps '6' are provided with centrally disposed, inwardly turned anges or hub portions Il which are coaxial with tube '2' in order to fit snugly and concentrically within the ends of tube 2. Caps i also have peripheral flanges i* which telescope with outer tube I' when the parts are in operative DOsition. In short,.the caps 6' have each a pair of annular anges I8 and i which, respectively.have a snug sliding t with tubes 2'` and 3'. It is noted that tube 2 is preferably of slightly less length than tube 3 so that the caps may 'be fitted tightly against the ends of tube I and the filtering material. The hub portion I8 is preferably formed integrally with a cap and performs the function of a plug member I of Fig. 2 to hold the assembled parts together.

In Fig. 4 we have shown washers I9 positioned frictionally and concentrically with the hub portions I8 of caps 6 and disposed between the caps and the ends of tube 3. It is obvious, of course, that .the washers may be dispensed with and a direct connection between caps and the end portions of tube 3 can be effected. Preferably, but not necessarily, the ends of tube 2 are expanded outwardly slightly in order to insure an easy t of the hub portions' I8 into the ends of tube 2'.

The mode of use of the cartridge is substantially the same as illustrated in Fig. 2.

The perforations provided in the tubes'2, 2' .and

3 are preferably punchedl toward the compacted mass of ltering medium. In this manner burrs 20 (Figs. 6 and 7) are formed and tend to hold the said ltering medium away from the perforations and thereby prevent pieces of the ltering medium from passing through the said perforations into the oil ow.

The expressions cardboardf ber-board and pulp ber are intended to cover any suitable rigid fibrous paper product for the purpose indicated.

While the invention has been illustrated and described in certain detail of embodiment for illustrative purposes, it is not intended that the invention be limited thereto but that modifications and changes ln details of construction may be incorporated within the spirit and scope of the appanded claims.

We claim:

1. An oil conditioner element comprising a cen' trally disposed, perforated, rigid, pulp ber, tubular core, a concentrically disposed outside perforated cylindrical casing of pulp ber, a compacted filling of filtering material ln the space between the core and casing. a paper cap closing over each end of the tube 'and casing to complete the enclosure of the filtering material, the caps having central openings coaxial with and of substantially equal diameter as the central tube, and a hollow plug tting each end of the tubular casing and acting to expand the core and at the same time exert pressure endwise against the caps to clamp the parts together as a. unitary strucure.

2. An oil conditioner element comprising two concentrically arranged, spaced, pulp fiber tubes, each of which is perforated and of substantially equal length, a filtering material in the space between the tubes, pulp ber caps fitting over the ends of the tubes to enclose the space containing the filtering material, the caps having central openings fitting over the inner tube and serving to center the tubes, a washer surrounding each` projecting end. of the inner tube and resting against the caps, and perforated non-metallic plugs frictionally tting the ends of the inner tube and each plug having a peripheral flange to engage the adjacent washer, the plugs operative to clamp the parts together as a unit. l

3. An oil conditioner element comprising a centrally disposed, perforated pulp ber tube, a perforated pulp ber' casing tube concentrically spaced from said central tube, a compacted mass of filtering material in the space' between the said tubes, pulp ber caps fitted over the ends ofV said tubes and frictionally engaged with the end portions of said casing tube, said caps provided with centrally disposed bores in coaxial alignment with said central tube. and centrally perforated means frictionally fitting within the end portions of said central tube and adapted to hold the parts together and allow communication between said bores of said cap members and the said central tube.

,4. An oil conditioner element comprising a centrally disposed, perforated, tubular core, an outer,

perforated tube concentric with and spaced from the tubular core and of approximately the same length therewith, caps tting over and spanning adjacent ends of the core and outer tube, each cap having two concentric flanges, one of which anges engages frictionally and telescopically the outer tube and the otherange engaging frictionally and telescopically the inside of the core, and a ltering medium in the annular space enclosed between the core and outer tube and caps.

CHARLES A. WINSLOW, LAURENCE L. MOORE.

WILLIAM G. NOSTRAND.