USRE12729E - Cab-ventilator - Google Patents

Description

RBISSUBD 15H0. 3'. 1907.

T. H. GARLAND.

GAR VBNTILATOR.

APPLICATION FILED SEPT. 23, 4190'1.

Effie/'ngc I M w. NM.

REISSUED DEC. 3, 1907.

T. H. GARLAND. UAB. VENTILATOR.

APPLIUATION FILED SBM-.2a. 1907.

2 SHEETS-SHEET 2.

m n M finir; es

JKM/lf UNITED sTATEs PATENT OFFICE- TIIOMAs II. GARLAND, or cI-IIOAGO, ILLINOIS.

i cnn-vnNrrLATon.

Specification of Reissued Letters Patent., Original N o. 800.438. dated September 26| 1905./Se1ial NIL-232.825.

. Reissued. Dec. 3, 1.907.

Application fnrreissue filed September 23, 1907. SerialNo. 394.252l

T o all whom it may concern:

Be it known that I, THOMAS HENRY GAR- LAND, acitizen ofthe United States, and a resident of Chicago, in the county' of Cook and State of Illinois, have invented a newV and Improved Car-Ventilator, of which the ollowing is a full, clear, and exact descrip- Ion.

My invention relatesv to a ventilator for cars.

The objects thereof are to provide means for securing efficient ventilation irrespective of the direction of motion of the car and at the same time to prevent the possibility of the entrance of rain, snow, cinders, etc., through the ventilator. Further objects of the invention will appear in the course of the subjoined description. I

Reference is to be had to the accompanying drawings, forming a part ofv this speciication, in which similar .characters of reference indicate corresponding parts in all the' ligures.

l Figure 1 is a transverse sectional view of a portion of a car, showlng one form of my invention as ap hed thereto, a part of the ventilator being s own in section; Fig. 2 is a sectional view on the curved line 2-2of Fig. 1; and Fig. 3 is a transverse sectional viewof a refrigerator car, showing a form of my invention applied thereto.

. Referring iirst to Figs. l and 2, an opening fis made in -the deck a of the car, as shown in a', and a main' conductor b is placed along the roof a2 ofthe car with its inner .end in said opening. The4 outer portion' of the conduc y tor is preferably curved to conform'substantially to theshape of the roof and in its preferred form is made s uare in cross-section. The discharge end b o the conductor is consequently located near the ed e of the roof and faces downward. There ore rain and Vs'f'riow cannot enter the conductor at this point. The conductor is preferably providedwith a damper bzat its inner end. A

cowl c is located along the side of the deck and on the roof, with its axis parallelwith the axis of the car and substantially per-- pendicular to the axis of the conductor b. It 1s made flaring at its front end and is provided with a curved contracted end c', leadl ing intothe side wall of the conductor l) at the point b3. This contracted end curved around' vdirectly in the center of the conductor b and points towardits outer end b.- y

Supposing the car to :travel in the direction in which the I'iared end of the cowl points, it will be obvious that air will be gathered by the cowl and discharged -through .the end c into 'the conductor. l). This air will be forced-through the conductor from the end of the cowl to the outer end 1).oi` the conductor and its aspirating the other portion ofthe conductor, which trolledby the damper b2. The current of air flowing out of the mouth of that one of the discharge ducts into which theforward cowl discharges impinges against the body of 'outer air, which, owing to the. onward movement of the car, deflects said Outllowing current across the mouth of the companion duct into which the rear cowl discharges. vThe deflection is, however, .more or less gradual, the momentum and pressure of said outflowing current serving to push the both ducts, so or suction effect is produced in the lee of the said outliowing current immediately in front of, and in, the mouth of the rear duct. This induces a pronounced outflow of air latter duct, so thatrthe two ducts cooperate to ventilate the car. Of course, inasmuch two halves ofthe ventilator are symmetrical, considered with reference to the two directions in which-the car may travel, it will be obvious that both halves, of the ventilator will -be in` effective operation .whichever direction the car travels. it will be readily understood that -thisoperation will result such' position that its-opening is action'will obviously take with rit air from.

-outer body of air` away from the mouths of.

communicates with' the car and is conthat a pronounced exhausting from the interior of thecar through the as the construction and arrangement of the in the effective ventilation of the. car and Athat the construction isA of such a nature. that foreign substances cannot enter the car. Although cinders can be blown. into the cowl, they charged 'at the outer-end of the conductor, and there -will be `no possibility of their being introduced into the car.

will be immediately dis.

It will bel observed that a ventilator con- Structed upon the principal set forth above is very efficient in operation, is free from the objection .of introducing foreign matters into the car, and is very simple in construction. 'Having no moving parts it cannot easily become inoperative, and, being entirely stationary u on the car, it cannot readily be displaced.

Fig. 3 illustrates .one form of my invention as applied to refrigerator-cars. It` could be applied `in the same or a similar manner to fruit'and vegetable cars. In this view the roof A is provided with a perforation A for the main conductorB of the ventilator, which slopes along the roof and has an outlet at B. A dam er B2 is'provided within the car. A cow O of similarA structure to that shown in the other figures' is located outside the car and connected with the conductor B, as described above.

'Although I have' illustrated and described articular embodiments of my invention,

I it will be obvious that the latter isV not strictly limited to the detailsthereof.

Having thus described my invention, I

' claim as new and desire to secure by Letters tions and each being provide tracted curved end, and a pair of conductors Patenti 1. A ventilator having two cowls provided with flaring-.ends pointing in o posite direc- (f) with a coninto which said contracted ends lead,` said conductors being curved downwardly at i their outlet ends.

2'. The combination With a car, of a ventilator having a conductor leading from the deck of the car and curving alongthe roof thereof, and al cowl extending longitudinall of the car and located on the Aroof thereo said cowl having a contracted end entering theconductor and extending in an outward direction from the body of the cowl. 3. The combination with acar, of a ventilator having a conductor leading from its deck and curving along the roof of the car so that its outer' end points in a 'downward direction, and `a cowl extending longitudinally of the car upon the roof thereof and having a flaring end pointing toward the front end of the car, said cowl also being provided with al contracted end leading yinto the conductor and pointing toward the 'outer\ end thereof, said-conductor and cowl being rigidly mounted upon the roof of the car.

4. In combination with a ca r, a pluralitly;-

of eduction conduits communicating wit the interior of the `car anddischarging externally side by side and substantially at right angles to the traveling movement of the car, and a pair of oppositely facing cowls each having its larger end facing' towards one:

end of the car and its smaller end discharging within a corresponding one of said conduits and in a direction towards the outer discharge end of the latter, the discharge end portions of said conduits being unobstructed and freely exposed to thesweep' of the ex- 'ternal cross drafts. induced by the travel of" the car.

5, In combination with a car, a plurality ofeduction conduits communicating wit the interior of the car and discharging exunobstructed, arranged in immediate juxta.

position to each other, terminating coincidently,'and freely exposed to the external cross drafts induced by the travel of the car,

and a pair of oppositely facing funnel-shaped cowls, each having its larger end facing towards one end of the car and its small end projecting freely within a corresponding one of said conduits and arranged to discharge in a directioncoincident with the direction part of the conduit intov which it of 'that extends.

6. In combination -with a car, a pluralit vof ediictionv conduits vcommunicating wit the interior of the car and havin their discharge ends arranged.- side by side, termi@ nating coincident with each other, opening? downwardly and substantially at right angles to the direction of movement ofthe 4car so that their discharge ends are exposed to cross drafts while the car is in motion, a pair of oppositely facing funnelshaped cowls, each having its larger end facing towards one end ofthe car and its small end extended V and discharging .within a corresponding *oneI of said conduits and deflected to deliver in a direction coincident with the direction o f that part of the conduit in which it extends. 7. In combination with a car, a eduction conduits communicating with the interior of the car and having their outer discharge ends arranged side by side, coincident with each other and at right angles to the direction of movement of the car, a pair of oppositely facing funnel-shaped cowls, each having its larger end facing towards one end of the carand its smaller-end extending into and ydischarging within a corresponding one of said conduits and in a direction towards the dischargeend of the latter, the'smaller discharge ends of said cowls terminating within and at substantial distances from tls` discharge ends of their respective conduits.

8. In combination with a car, a pluralit of eduction conduits communicating witfi the interior of the car and discharging externally side by side in anon-forwardly direction, the discharge end ortion of said conduits being unobstructe arranged in juxta pesition to each other, terminating eoinci within the' latter intermediate the length of dently and ex Osed to the .external cross the conduit.

drafts induced y the travel of the earJ and a funnel-shaped cowl having its larger end 5 facing towards one endof the ear and its smaller end extending within the forward one Y of said conduitsand discharging at a point THOMAS GARLAND.

Witnesses:

' PLINY B. SMITH,` EMILlE Rosa.

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