USRE4005E - hitchcock - Google Patents

Description

Ais a sliding valve Whlch 1s moved to and fro UNITED STATES PATENT OEEICE.

M. T. HITCHCOCK, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR T0 JOHN W. LABAREE.

CAR-VENTILATCR.

be conveniently attached to the roofs of all kinds of cars and will be automatic in its operation, as it Will readily adjust itself to the motion of the car in whichever direction the car may move.

That others skilled in the art may be able to make and use my invention, I will proceed to describe its construction and the mode of its operation.

In the drawings, A represents the case or shell of my improved ventilator, which may be cylindrical, or partially so, or prismatic or any other suitable shape-that is to say, its general cylindrical form or the form of that portion of the shell which is cylindrical may be given to it by making such portion circular, polygonal, or oval in its cross-section. That To all whom it may concern:

Be it known that I, M. T. HITCHCOCK, of Springfield, in the county of Hampden and State of Massachusetts, have invented a new and useful Improvement in Car-Ventilators; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, and to the letters of reference marked thereon, in which'- Figure l represents a vertical transverse section of my improved car-ventilator as attached to a car. Fig. 2 is a similar view representing a modification of the same. Fig. 3 is a similar View representing another modiiication. Fig.4is a vertical longitudinal section ofthe same.

This invention relates to a new car-ventilator; and it consists of a shell or case a portion or one side of which is cylindrical, the other side having an opening therein, being attached or secured to the car in any convenient I nanner, and Within which shell or case to the car may be made rectangular, giving the channel B for the passage of the air a rectangular form, or it may be made of any other suitable and desirable form to suit the in said shell or case by the wind, according to the direction in which the car may be moving.

The abutments at the ends of the case or shell, against which the valve strikes, are made of elastic material in order to .deaden the noise when the valve strikes said abutment: The valve is hung so that it can slide on its bearings, and that it can also oscillate on its bearings, for the purpose of allowing the be large or small, of any desirable size. W valve to assume an inclined position when On cars in which a deck is formed. above reaching the end of the case, which position the roof, as 1n Flg. 1, the ventilator can be is produced by the shape of the abutment, .easily attached to the edges of the deck, as which is so'shaped that the upper end of the shown in Fig. l; but where no such deck is valve is nearer to the front than the lower provided, as in Fig. 2, the ventilators are atend, so that solid bodies-such as cinders, tached on opposite sides, if desired, to an updust, or sparks-may, by the position of the right tube, C, projecting from the roof and valve, be caused to slide down on the same connecting the channels B with the interior to the bottom of the case. of the car, as is clearly indicated in Fig. 2.

Between the lower edge of the valve and Vithin the shell A is arranged a sliding the bottom of the case is left an open space valve, D, which is either hung upon a rod, E, for the purpose of discharging solid bodies that passes longitudinally through the case, blown into the shell, and also the surplus as in Figs. 1, 2, and 4, or said valve is prowind. The fresh airis conducted into the car vided with trunnions a a, that are fitted into by a suitable channel or passage through the grooves on the sides of the shell, said trunside of the shell or case. The ventilator may nions carrying friction-rollers operating in each end, and said shell A may be -Inade of any suitable and desirable material, tin being Well adapted to that purpose. Itis evident that the sides of the channel B may be parallel, or nearly so,'and said channel B may said grooves, as in Fig. 3. lf the valve is hung on the rod E, it is provided with a hub, d, the bore of which is narrowest in the middle and flaring toward each end, as in Fig. 4. .The object of this hub is to allow the valve to assumea certain inclined position at each end of the case, as in Fig. 4. If the valve ishung at both ends, as in Fig. 3,it will oscillate easily upon its pivots. At each end of the case A is arranged within the upper part of the same an abutment, F, which is lined with indiarubber or other suitable elastic material, and which is so formed as to cause the valve D, when blown against the abutment by the wind, to assume an inclined position, with its lower part nearest the outer end of the case, as in Fig. 4. The lower part of the valve D does not reach the bottom of the case A, so that a space is left there, as shown.

The operation isas follows: In whatever direction the car moves the wind entering the front end of the shell A will drive the valve toward the rear end of the same against the abutment provided therein. Owing to the inclined position of the valve all solid bodies thrown against it by the force of the draft will fall to thebottom of the case and will be blown out through the space left between the same and the lower edge of the valve. The pure air will enter the car through the channel B. If the motion of the car is reversed,the valve will at once reverse its position in the shell A and also its inclined position, as indicated in Fig. 4, the valve being always in the rear end of the shell A when the car is in motion.

This ventilator possesses numerous superior advantages over those now in use. The most important of these advantages are the following: It separates the pure air from the impure substances contained therein, and causes only the pure air to enter the car; it is automatic, and adjusts itself at once to the motion of the car; it is noiseless, and is simple in its construction, can' be cheaply made, and cannot easily get out of order, as thosewhich are provided with hinged valves can.

l am aware that ventilators having a cylindrical shell have heretofore been made, but diiering very materially both in construction and operation from that herein described, as shown in Letters Patent No. 36,044, granted to William VVeStlake, for car-heater, and also in Letters Patent No. 36,063, granted to same party for car-ventilator, both dated July 29, 1862; and I therefore disclaim any and every part of said devices and every other cylindrical ventilator device without the quadrangular or prismatic attachment part B, as that constitutes a particular feature of my invention in adapting the shell to the side of a monitor or other car; and,

Having therefore described my invention, what I claim as new, and desire to secure by Letters Patent, is y l. The hub h of the sliding valve, constructed as described, so that both a sliding and an oscillating motion canbe imparted to the valve, as set forth..

2. Providing the case or shell A, in which the sliding valve D moves, with abutmentsF F, which are so arranged that the valve, when brought into an inclined position, substantially as and for the purpose herein set forth and speciied.

3. The shell or case A, when provided with the abutments F F, in combination with the sliding oscillating valve D and with the channel B, all made so that the lower edge of the valve does not come in contact with the bottom y of the shell, and all operating substantially in i the manner herein shown and described.`

4. The combination of a cylindrical or partially cylindrical shell or case, A, with a quadrangular or prismatic side attachment portion, B, constructed substantially as herein described.

M. T. HITCHCOCK.

Witnesses:

T. A. CURTIS, HENRY T. MILLER.

striking against one of the abutments, will be

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