US1873573A - Dust catcher air filter - Google Patents

Description

Patented Aug. 23, 1932 UNITED STATES PATENT OFFICE GEORGE B. GALVIN, OF LOUISVILLE, KENTUCKY, ASSIGNOR TO GALVIN BROS. STEEL WOOL AND MANUFACTURING COMPANY, F LOUISVILLE, KENTUCKY, A CORPORA j TION 0F KENTUCKY DUST carcnnn. In FILTER Application. led October 31, 1828-. Serial No. 316,257.

This invention relate'sto air filters or, as I preferably call them, dust catchers.

It is well understood that hot air heating systems, in which air is heated `and then led through conduits to desired points, have the inherent objection that any dust drawn into the system tends to passout with the heated air into the room or compartment it is desired to heat. v

The principal object of the present invention is to provide a novel and highly eiiicient form of dust catcher which may be inserted in a hot air conduit, preferably adjacent the delivery end (register openingy and which,

when so inserted, will catch the dust tending to pass out with the air and yet permit the air to pass out substantially without retardation.

A second important object of the invention u is to provide a novel dust catcher employing metallic wool such as steel wool for catching the dust.

With the above and other objects in view as will be hereinafter apparent, the invention consists in general of certain novel details of constru tion and combinations of parts hereinafter lly described, illustrated in the accompanying drawingand speciii cally claimed. l

D In the accompanying drawing like characters of reference indicate like parts in the several views, and: l

. Figure 1 is a face view of al hot air register with the device in position.

5 Figure 2 is a rear or back view of the lferred form ofthe device.

Figure 3 is a section on the line 3-3 of Fi re 2.

igure 4 is a detail section, partly broken 0 away, showing part of the frame construction only, the sectionfbeing taken on the line 4.-4 of Figure 2.

Figure 5 is a face view of a modified-form of the device.

In the rst form of the invention, shown pre- 1 in Figures 1 to 4 inclusive, there is provided a frame of rectangular shape and preferably of round wire. Around two of the opposite side members of this frame is mounted a batt or thin sheet or ribbon of steel wool 11, the thin sheet being carried around as many times as may be desired and, as shown m Figure 3, there may be two or more'layers.

A brace and securing member 12 is provided ends 14 from coming loose althouglh, owing v to the nature of the steel wool, t ese ends would naturally interlock with the other portions of the batt. X This structure thus formed isset into the opening or conduit Where it enters the room or compartment, the end being usually provided withta frame 15 as shown in Figure 1 which illustrates the appearance of the device in position.

' In the form shown in Figure 5 a central 'block or support 16 has a batt or ribbon of metallic wool wound around it as at 17 t0 form a structure which may be itted into the conduit.

While steel wool is found to be especially adapted-for this purpose it is to be understood that I may use other metallic wool' and it will be noted that the steel wool in the thinl batt or ribbon offers little or no obstruction to the How of air yet, owing to its highly irregular interstices, the flow of air is similarly irregular and consequently the steel wool "catches the dust while allowing the air to How freely therethrough.

Itwill be noted that in the form shown in .Figure 5 the usual frame, here indicated at 18 lis provided around the wall, this frame having the block 16 connected thereto by the wires 19.

It is to be understood that the batt herein referred to is made by arranging nietal Wool in'theoform of a ribbon just as cotton or other material is formed into a. batt.

This wool may, if desired, be made rust and corrosion proof by immersion in or spraying with japan lacquer or paint in such manner as to leave a thin lm of the coating material on the wool.

There has thus been provided a simple and efficient device of the kind described and for the purpose specified.

.It is obvious that minor changes may be made in the form and construction of the invention without departing from the material spirit thereof. It is not, therefore, desired to confine the invention to the exact form herein shown and described, butit is desired to include all such as properly come within the scope claimed.

Having thus described the invention, what is claimed as new is:

1. In a dust catcher for the conduit outlets of hot air heating systems, a frame adapted to 'ht the conduit, a batt of metallic wool wrap'- `wound around said frame, and means for holding the free ends thereof in from unwrapping.

7 A dust filter comprising a holder, a strip place and of metal fibres wrapped about said holder,

andmeans engaging the free ends of the strip to prevent unwrapping of the strip.

8.V In a ltering device for a dust laden luidal stream, a holder adapted to iit within a conduit, and a batt of metal fibres wound upon itself a plurality of times around said holder, the ends of the fibres at the exposed extremity of the batt being interlocked with lghefibres of the contiguous portion of said att.

In testimony. whereof I aiix my signature.

t GEORGE B. GALVIN.

around that side and the opposite side to cover the space between the remaining sides of the frame, and across bar extending between opposite sides of the frame transverse the batt and' engaging over the batt adjacent' the outer end of said bat-t to hold the end from unwrappin ,3. In altering device for a dust laden fluidal stream, a holder adapted to tit a con duit of the stream, and a batt of metalbres wound around'said holder, said batt having the free` ends thereof interlaced with the bresl of the batt. 4. In a filtering device for a dust laden iuidal stream, a frame adapted to lit a conduit of the stream, a battl of metal fibres `stretched across said frame, the ee ends of said batt being folded over said frame and brought together, and means for holding said ends together.

5. In a filtering device for a dust laden fluida] stream, a Jframe adapted toft a conduit of the stream, a batt of metal libres assing over and around the opposite sides o said frame, the -free .ends of said batt being brought together, anda cross member for holding said ends together.

6. In a filtering device for a dust laden uidal stream, a frame adapted'to t a conduit of the stream, a batt of metal libres ouv

Images