US325803A - Filter-ventilator - Google Patents

Description

2 Sheets-Sheet 1.

(No Model.)

T. B. HOWE.

FILTER VENTILATOR.

J Invenior.

' Wjinessea. G4, K AZWW (No Model.) 2 Sheets-Sheet 2. T. B. HOWE.

FILTER VENTILATOR.

Patentedfiept. 8, 1885.

..T%2 enior f 1 2 213 Jttorneys.

W z'inesse s.

UNTTED STATns PATENT FFICE.

FILTER-VENTILATO R.

SPECIFICATION forming .part of Letters Patent No. 325,803, dated September 8,1885. Application filed July G, lfiSS. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS B. HOWE, of Scranton, in the county of Lackawanna, State of Pennsylvania, have invented certain new and useful Improvements in Filter-Ventilators; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification,

and to the figures and letters -of reference marked thereon.

Heretofore numerous attempts have been made to prevent the entrance into railway cars of dust, cinders, &c.-, which at present render traveling disagreeable, and at the same time ventilate the car thoroughly; and nearly all such attempts have resulted in the invention of some sort of shield or guard to be placed in front of a car-window, so that dust, &c., would not enter when the window .wasop'en; but, so far as I am aware, none of these devices will accomplish the purpose in a satisfactory manner, because an eddy will form behind the guard and draw in, as it were, the dust, cinders, 83c. Screens have also been applied to car-windows, but .with indifi'erent success, as only the larger cinders could be kept out and the fine dust would pass through and enter the car.

,Having theobject in view of providing the passenger-car with the means for preventing the ingress of dust, 820., not only through open windows, but around their frames, through ventilators and doors, I havemade the invention'shown and described herein.

Figure 1 is a side view of a car provided with my invention. Fig. 2 is a sectional view on the line a: a: of Fig. 1. Fig. 3 isa sectional view on the line 3/ y of Fig. 1. Fig. 4 is a view of modification. Fig. 5 is aperspective view, partly in section, of one of the air-filters removed.

Similar letters of reference in figures denote the same parts.

A represents the body of an ordinary passenger-car; B, a casing extending from end to the several end of the car and on aline with the windows thereof, consisting ofa lower sill, C, secured just beneath the bottoms of the car-windows, an upper molding or top, D, just above the tops of the windows, and the side E,composed deluge of dustor to a of a series of glass windows, F, in line with and corresponding in number to the car-Windows, and between each of these panes of glass an air-filter, G, constructed as shown in Fig. 5-that is, of a frame, 9, having in either side a piece of wire cloth or gauze, and between these two pieces of gauze is a layer of wool or felt and a layer of curled hair, th'e'woolheing on the-inside and the hair-on'the outside, or either or both of these may be employed.

A filter thus constructed will effectually prevent the passage through it of any dust or cinders, but will not prevent The curled hair will arrest the larger particles of dust,.cinde1's, 820.; and the wool the finer, thus thoroughly purifying the air before it enters the space between the casing and can.

Air will enter the space between the casing B. and car onlythrough the air-filters, so that the windows may be opened or removed entirely without subjecting the passenger to a direct draft,as would be the case were the panes F, which I term storm-glasses, removed, and as the filters are between the windows the air entering is obliged to take the course indicated by the arrows in Fig. 2.

This casing can be used in winter for the purpose of keeping the car warm by replacing the filters by solid panels, space between the casing and car and answering the purpose of double windows generally employed.

.In Fig. 4 I have shown a modified arrangement-,in which I dispense with the entire outside casing, place the filters in the body of the car between the windows, and locate the glass frames F in the same or a supplemental frame near the ordinary windows,and recess the side of the car somewhat, so that the air entering through the filters can come into the space between the windows,-or,if the inner window is open, into the car. 7

At the ends of the ca' on top, are also employed filters H; but in this instance I place a piece of wire-netting at some distance in front of the filter, so that it will not take fire from sparks from the engine, and I also place the filters over the openings for the ventilatorsin the topof thecar.

The filters can be cleaned when necessary thus forming an air the passage of air.

or desirable by passing a current of air or water through them from the inner or wool side.

My invention, while especially adapted for use on railway-cars, can as well be applied to houses. or steamboats, and in short to any place where air is to be filtered-J01 instance, to the cold-air pipe of an ordinary housefurnaoe.

I claim as my invention- 1. The combination, with a car, of asupplemental frame or casinginclosing the windows thereof and provided with the storm-windows corresponding to the windows of the car, and one or more'air-filters located in said casing, substantially as described.

2. The combination, with a car, of a supplemental frame orcasing inclosing the windows thereof, provided with the storm-windows corresponding with the car-windows, and a series of removable filters located between the stormwindows, whereby said filters can be removed when desired and be replaced by solid panels, substantially as described.

THOMAS B. HOWE.

Witnesses:

A. S. STEUART, FRED F. CHURCH.

Images