Dust collector

June 30, 1953

N. C. SHELLMAN

DUST COLLECTOR

2,643,733

Filed July 14, 1949

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Patented June 30, 1953

2,643,733

UNITED STATES PATENT OFFICE

2,643,733

DUST COLLECTOR

Norman C. Shellman, Rye, N. Y„ assignor of onehalf to Edward H. Yonkers, Jr,, Glencoe, III.

Application July 14,1949, Serial No. 104,735

Claim.

This invention relates to certain new and useful improvements in dust collectors for suction type cleaners and has for its principal object the provision of an improved construction which will be highly, efficient in use and economical in manufacture.

An important object of this invention is the provision of an arrangement which facilitates the removal of the collected dust and dirt from the collector. Cleaners of the type generally in use embody a flexible cloth bag arranged within the collector housing and connected thereto by means of a ring disposed beneath the cap attached to the bag and held by said cap in position upon the housing. When the cloth bag of this type of cleaner is to be removed, the cap of the housing is removed and the operator then grasps the ring attached to the collector to withdraw the bag from the collector housing. As a certain amount of dust and other particles are deposited on the exterior of this bag, it is clear that in removing the bag, most if not all the loose dust and dirt on the exterior of the bag becomes detached from the bag during the removal operation. In addition, by reason of the flexibility of this bag, in order for the contents therein to be removed the bag must be grasped by the hands and vigorously shaken, thus transporting a certain amount of the dust and dirt from the bag onto the hands and wearing apparel of the operator. If this shaking of the bag is done indoors, dust is released for redistribution over the floor and household goods and furniture.

My invention has for its object an arrangement which will overcome the foregoing objectionable features, an arrangement, which will permit the removal of the dust collector without scattering or disturbing the dust therein and one which will permit the removal of the collected dust and dirt from the collector by the simple operation of releasing a gravity-actuated clean-out door provided as a part of the structure of the dust collector.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of parts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings showing the preferred form of construction, and in which:

Fig. 1 is a side elevational view of a conventional cleaner with which my invention is associated;

Fig. 2 is a part sectional side elevational view of the same;

(Cl. 183—37)

Fig. 3 is a sectional detail view taken substantially on line 3—3 of Fig. 2;

Fig. 4 is a fragmentary sectional detail view similar to Fig. 2 showing a slightly modified form 5 of construction;

Fig. 5 is an end view of the dust collector shown in Fig. 4; and

Fig. 6 is a perspective part sectional view of the dust collector embodied in the invention shown 10 in Fig. 4.

The conventional suction cleaner now commercially in use is illustrated in Fig. 1. This cleaner comprises a suction hose 10, one end of which is fractionally insertable in a nipple 11 15 provided as an integral part of a cap 12 having a handle 13. This cap 12 is mounted to close one end of the housing 14 supported by the conventional runners 15 for movement over the surface being operated upon. Within this housing 14 is 20 arranged the standard and conventional motor 16 which functions in a manner well-known in the art to create the suction through the hose ! 0, to which hose 18 are attached in a well known manner the usual and conventional cleaning ap25 pliances (not shown).

It is this type of suction cleaner with which my invention is preferably related.

In this connection the cap 12 has a flange 17 which provides an annular groove 18 in the base 30 of which is mounted a rubber ring 19 for sealing purposes. This cap 12 is removably connected to the housing 14 by the standard and conventional latch fingers 20. The cap 12 provides an annular flange 21 which fits into the open end 35 of a dust collector 23 and is secured thereto by suitable rivets 22 of the like. This dust collector is preferably formed of light metal, such as aluminum or the like. It provides a longitudinally extending opening 24 normally closed by 40 a perforated plate 25. This plate 2 5 is removably connected to adjacent walls of the collector 23 by a knuckle and pintle construction 26 or by any suitable means which will permit ready detachment of the plate 25 from the collector 23. Secured to this plate 25 in any suitable manner’ and extending over the opening 24 is a filter member or cloth 27. This filter member 27 may be of any approved construction to filter the air escaping from the housing and remove therefrom all particles of dust and dirt, thus blocking the ^υ passage of such dust and dirt from within the collector 23. In the present instance, this filter is in the form of a finely woven cloth.

The bottom wall of the collector provides a clean-out door 29 hinged as at 30 to the end wall ⁰⁰ 28. A spring clip 30' is secured by welding or

2,643,733 the like or by any other means to the collector 23, and this clip provides a latch head 3i serving to removably latch the door 29 in a closed position.

In this form of construction it will be particularly noted that the collector is attached to the cap 12 so that when the cap 12 is removed from the housing 14 the collector 23 will be removed therewith. After the removal of the collector 23 from the housing 14 all that is necessary to remove the collected dust and dirt is to hold the collector in a position such that upon release of the spring clip 30' from the door 29, the door 29 by gravity moves into open position, freeing the collected dust and dirt from the collector 23, it being noted that as the interior surfaces of the collector are smooth the dirt in this gravity discharge operation will not cling to the collector as it would where a cloth bag is used.

In the modified form of construction shown in Figs. 4 to 6 inclusive, the collector 23' has a closure 32. The closure 32 provides an annular laterally extending flange 33 which abuts the adjacent edge 34 of the housing 14'. Disposed within a gasket receiving recess 33' formed in the cap 12' is a gasket ring 19' which bears against the outer surface of the flange 33 to effect a complete seal between the housing 14' and the cap 12'. The closure 32 provides an intake port 35 of curved formation with one end registering with the intake port 36 of the outer cap 12' and which latter port communicates with the hose (not shown). The other end of this port is disposed adjacent the filter cloth 27' for reasons hereinafter set forth. The intake port 35 is formed to provide an elongated transversely extending mouth 37 of a sufficient size to permit the fingers of the hand to be inserted therein whereby to remove the collector 23' from the housing 14'. The collector 23' in this form of construction is otherwise substantially the same as the collector 23 in the form of construction shown in Fig. 2, and in this connection like reference numerals will be used to indicate similar parts.

If found desirable, a plurality of rods 36' may be arranged in parallel spaced relation with respect to each other· with their ends secured in a suitable manner to the collector and extending lengthwise within the opening 24' to serve as a support for the filter 27', to maintain the same from collapsing.

The intake through the nipple i I (Fig. 1) and the intake port 35 are related to the filter cloth in a manner such that the air wipes against the cloth and by reason thereof tends to keep the cloth clean, freeing particles of dust and dirt which would otherwise cling thereto.

From the foregoing description it will be clear that I have provided a cleaner in which there is arranged a collector which may be easily removed from within the housing and after re5 moval therefrom the collected dirt and other matter can be quickly removed therefrom in a clean sanitary manner.

While I have illustrated and described the preferred form of construction for carrying my in10 vention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such 15 variations and modifications as come within the scope of the appended claim.