US142807A - Improvement - Google Patents

Description

A. 1. MoRRlsoN.A Gar-ventilators. N0. 142,807. Patented September16,873.

UNITEE STATES PATENT OFFICE.

ANDREW J. MORRISON, OF TROY, ASSIGN OR OF ONE-HALF HIS RIGHT TO THOMAS W. O. MOORE, OF MOHAWK, NEW YORK.

IMPROVEMENT iN CAR-VENTILATORS.

Specilication forming part of Letters Patent No. 142,807, dated September 16, 1873; application filed i June 6, 1873.

To all whom it may concern:

Be it known that I, ANDREW J. MORRISON, of the city of Troy, county of Rensselaer and State of New York, have invented a Railway- Oar Ventilator, of which the following is a specification The object of my invention is, rst, to introduce a free circulation of pure cooling air through the car during summer travel without drawing in cinders with the air during the processa thing not eifectually accomplished by any ventilator now in use 5 second, to expel foul air from within the car.

The machine is fully illustrated in the accompanyin g drawings.

Figure 1 is a front elevation of my railwaycar ventilator as seen from the inside of the car, the ventilator being closed.

A is a molding, attached by screws to the case B. O is the inside bottom of case B. D, D', and D are three rectangular win gs, made of metal, wood, paper, cotton, or rubber, and each rmly joined to the other at one of their like edges, one of their longer edges being preferable, and at such inclination to each other that two of the angles formed thereby, Fig. 2, as D D and D D", shall be equal to each other, while the remaining angle, D D, is one-fifth larger than either of the others. These wings so attached to each other form a wheel, which, when the proper force is applied, will revolve about the line in which they are joined together as an axis. The wings thus arranged are supported in the case B, and made to revolve on their axis between two centers, the one in the top and the other in the bottom of the case. The center in the up! per part of the case is a socket, in which a point projecting from the axis plays, while the lower center is the point of an adj usting-screw, which plays, through the nut J fastened to the bottom G, into a socket in the lower end of the axis. By this screw the win gs are adjusted to their proper place, and rmly held in position for revolving. The center or socket L in the top of the case is made of a metal strip, which slides to its place in grooves, and is there secured by the molding A. E, E', and E are three keys or spring-bolts attached to the under side ofthe bottom U. If the ventilator is in motion, the spring-bolt E, pushed in, will, through a slot in the bottom U, catch the wing D at its lower edge, stop its revolving, and hold the ventilator closed, no matter in which direction-to the right or to the leftthe car is proceeding. If the car is moving to the right, and it is desired to modify the current of air coming'in, spring-bolt E', pushed in, will, through a slot in the bottom C, catch wing D at its lower edge, stop the revolutions of the wings, and maintain the ventilator half open to the left. On the other hand, if the car is proceeding left, spring-bolt E, pushed in, will hold the ventilator half open in like manner to the right. The lower edge of the Wing D is the only one of the three win gs which will, at any time, catch on either of the spring-bolts. F and F are slots in the lower edges of Wings D and D, for passing over spring-bolt E when that bolt is not in use, and also when it is in use. Y

The form of that section of the case B from the axis of the wheel to the inside of the car is a parallelogram, its width double the Width of either wing, and height the length of the wings,whi1e that portion of the case from the axis of the Wheel to the outside of the car is a longitudinal section of a hollow cylinder, in which the wings are made to revolve by the current of air produced by the car in motion. The top of this section of the case B is a halfcircle, projecting beyond the side of the car and covering the top of the wings, while the edges ofthe sides and the bottom of the case are only flush with the side of the car.

Fig. 2 is a horizontal section of Fig. 1 in the dotted lines X X.

Fig. 3 is a horizontal section of the ventilator half open, in the dotted lines Y Y, Fig. l, with a view of the bottom C and a triangular slip,

M, fitted in the angle D D between those two wings, close to their lower edges, and sloping downward and outward, to act as a water-shed when the ventilator is closed. In this ligure spring-bolt E' is represented shoved in, holding wing D. Bolt E is also represented shoved in, holdin g the ventilator closed,

in the dotted lines.

Fig. 4 is a View of the under side of the bottom C, showing the perforated head G of the adjusting-screw H and a portion of the droppeg I for holding the screw stationary after being set.

Fig. 5 is an outside view of the lower edges of case B, the outer edge of bottom C, the edge of the perforated head G of the adjustingscreW H, the point of the drop-peg I in place, the nut J fast to the bottom C, and the point of the adjusting-screw H, on which the Wings revolve.

Fig. 6 is the inside of the top of the case B, showing the metal slip K with the center or socket L. When the adj usting-screw is turned down and the molding A taken off, this metal slip and the bottom C, together with the Win gs, can be removed from the case.

If desired, the spring-bolts E, E', and E may be substituted by keys operating like the keys of a piano.

With the ventilator constructed as now described, and in position, if the car is proceeding to the right the Wings will be revolving to the left, shedding cinders, While carrying in a' steady 110W of fresh air from the outside as, in their revolutions, they turn inward, and drawing imp ure air out as, in their revolutions, they turn outward. It' the car is proceeding to the left the Wings will bc, in like manner, revolving to the right, and the same effect bc produced.

If, While the car is moving to the left, springbolt E is pushed in, the movements of the Wheel Would not be checked, because, iu its turning, Wing D would strike the out end of the bolt and drive it back to its place, E not being the right bolt to shove in when the Wheel is revolving in that direction. The same Woul d be the case if the car was proceeding to the right and bolt E Was pushed in, the construction of the ventilator being such as to govern itself in this respect, and not permit a wron g use of the keys to stop its usefulness.

For those ventilators in the top of the car bolts E and E may be dispensed with.

I claim as my inventionl. The Wings D, D', and D, constructed, attached, adjusted to the case B, and operat ing substantially and for the purposes as hereinbefore described.

2. The bottom C, with adjusting-screw and nut, drop-peg, and spring-bolts, as hereinbe fore described.

ANDREW J. MORRISON.

Witnesses:

.IULIUs SANnnRsoN, GEORGE T. BATTERsoN.

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