US359975A - Self and lloyd d - Google Patents

Description

(No Model.)

W. D. P JARVIS GAR VENTILATING APPARATUS.

Patented 1887.

Wi'bzesses:

llsiiTnn STATES ATENT Trice \VILLIAM I). 1'. JARVIS, OF PHILIPPI, EST VIRGINIA, ASSIGNOR TO HIM SELF AND LLOYD D. ROBINSON, OF SAME PLACE.

CAR-VENTiL-ATlNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 359,975, dated March 22, 1887.

Application filed August 31,1886. Serial No. 212.319. (X0 model.)

.To all whom 2'6 may concern.-

Be it known that I, \VILLIAM D. F. J anvrs, of Philippi, in the county of Barbour and State of V est Virginia, have invented certain new and useful Improvements in Means for Preventl ing Cinders and Dust from Entering Cars; and I do hereby declare that the following is a'full, clear, and exact description thereof, reference being bad to the accompanying drawings, and to the let-tcrsolrelcrence marked thereon, which form part of this specification, in which- Fign re 1 is a side view of arailroad-car body having my invention applied thereto. Fig. 2 is a central vertical longitudinal section, partly broken away, of the same, showing theintcrior arrangement of the tubing. Fig. 3 is a crossscction ofhig. 1, showing the connection of the tubing or piping with the air-directors F. Fig. 4 is a sectional detail of the same.

This invention relates to improvements in smoke and dust excluding apparatus for cars, being especially designed for use on railroad coaches; and it consists in the novel construction of the air-directors, hereinafter described, and arrangement of parts, as will be fully uir derstood from the following description, when taken in connection with the accompanying drawings, and specifically designated in the claim.

In the drawings, A designates the body of a railway-car, which may be of usual ordinary construction. To the bottom of body A, underneath the floor thereof, I secure in suitable manner an air drum or receiver, 0, of proper size. This receiver may be placed either centrally of the bottom, as shown, or in other con venient situation, as may be desired.

B designates pipes running,respectively, from each end of receiver 0 to the ends of the carbody. These pipes are provided at their ends with suitable valved flexible coupling-tubes, I), which may be similar to the couplings used in the present system of air-brakes.

D D designate pipes extending from drum 0, at right angles to pipes 13, beneath the floor of the car, to the sides thereof, where they bend upward into or are connected with vertical pipes d, which rise vertically within the side walls of the car,or on the inside faces of these walls,to a point above the tops of the windows of relatively-small diameter to pipe E, with which each joint 0 connects and opens, the joints 6 passing through the side walls of body A, as shown.

F F designate the air-jet directors, into which the outer ends of pipes 0 open, and they are made as follows: Each director F is formed or stamped from a sheet of springy metal, or of rubber, and is rounded in cross-section and semi-tubular in longitudinal section, as shown in Figs. 3 and 4, its ends being closed and 7 properly flanged, as well as its side edges, so that it can be secured in place by suitable fastenings, such as screws. Each director F has its longitudinal semicircular portion slitted,or provided with a narrow aperture, f, as 7 5 shown. The directors F shouldbe of sullicient length to have theirslits f correspond in length to the height of the windows, between which the jet-directors are secured by the described means, one director F being placed between each pair of windows,on the outside of the carbody,and one director at the outer side of each end window of the car, as shown, with the slits f outward and parallel to the vertical sides of the windows. the jet-directors F made of springy material, as described, is to regulate the passage of air through the slits, as hereinafter described, so that when air is forced into the directors under heavy pressure the slits will widen, and when 0 under less pressure they will contract, so that the force of the jet of air escaping from the slits in the directors will be about equal in velocity,though not in quantity, notwithstanding the variations of pressure in the direct- 5 ors F.

The manner of supplying air to the directors F is as follows: The car A, forming one of a series of similarly-equipped cars in a train,

and connected therewith by the flexible conp- 100 The object of having lings b, so that all the receivers O and di rectors F will receive,and have a corresponding air-pressure. The front car of the series is connected by its flexible coupling to an air-com,

densing or air-compressing engine, preferably similar to the pumping-engines used in connection with the WVestinghouse air-brake, and under control of the engineer. This pump being started, the compressed air will flow through the tubes or pipes B to the receivers O in each car, whence it will be conducted through pipes D and its bend or connection (2 to the delivering-pipes E, from which it is delivered through joints 6 into the jet-directors F, from which it escapes through the slits f in thin sheets at right angles to the car-body. Now when the cars are in motion, the sheets of air escaping through the directors F, as described, will be curved backward by the currents oflair created by the motion of the train; but the pressure will be such that the jets will extend several inches from the sides of the car,

and any ciuders from the engine or dust from theroad-bed will be blown outward by them from the windows and prevented from entering the same while the windows are open and theapparatus is working, as described,.thus

v adding greatly to the comfort of passengers.

The means for supplying compressed air to the receivers O and thence to the directors, as described, may be varied, the means described, though preferable, not being an essential element of the invention, which is principallyin the novel construction of the jet-directors F and their connections with the receivers.

I am aware that devices have been employed for directing currents of air from theisides of the car, between the windows thereof, to prevent the passage or entrance of dust and smoke therein; and I am also aware that ven tilating devices have been employed having an air-receiver located beneath the car-floor.

Therefore I do not claim such devices, broadly; but

What I do claim as new is In a railroad-ear, the combination; of the vertical jet-directors F, made of flexible material and provided with the vertical slits f, as i tops of the car-windows,on the inside thereof,

and communicating with the directors F by suitable joints, 6, allsubstantially in the manner and for the purpose specified.

In testimony that I ielaim the foregoing as my own I affix my signature in presence oftwo witnesses.

W. D. J ARVIS;

\Vitnesses:

W. P. SCOTT, GRAN. E. TAFT.

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