US376984A - Christian h - Google Patents

Description

(No Mod el.)

- C. H. GOP-BEL.-

PNEUMATIG PROPELLER FOR CARS.

No. 376,984 Patented Jam-24, 1888.-

Fig. I.

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' WITNESSES:

N R m A,

UNrrnn STAT S PA E T IQFEICEQII" j cHRIsTIAN'HcoEB L, OF PHILADELPHIA,PENNSYLVANIA, ASSIGNQRj BY MESNE ASSIGNMENTS, o THE. AMER'IOANPNEUMATIO nAiLwA coM- PANY, OF TENNESSEE.

- PNEUMATIC PROPELLER PF-ORCA'RS.

SPECIFICATION forming part of Letters Patent No. 376,984, dated January 24. 1888.

Application filed March 12, 1887 Serial No. 230,625. (No inodehl V I To alliuhom it may concern.-

Be it k nown-that I, CHRISTIAN H. (301mm, a citizen of the United States, residing in the 7 city and county of'Philadelphia. State of Pennsylvania, have invented a new and useful Improvement in Pneumatic Propellers for Oars. which improvement is fully set forth in I the following specification and accompanying drawings, inwhich- [0 Figure 1 represents a longitudinal section of a pneumatic propeller for a car embodying my, invention. Fig. 2 represents a top or plan view thereof. Fig. 3v represents a section in line 90 x, v Fig. 2. Fig. 4 represents an end View thereof including a car and conduit on a reduced scale. r g Similar letters of reference indicate corresponding parts in, the several figures.

My invention consists of a pneumatic propeller for a car or other vehicle, formed of a tube containing a plunger and provided with gates which are successively opened by the connecting device of the plunger and car, said gates being normally'el'osed, so as to permit a vacuum in the tube in the advance of the plunger, then opening to allow the passage of the aforesaid connecting device, and finally closing, so as to permit the plunger'to be subjected to pressure at rear. By these means the plunger, andconsequently the car or other vehicle, may be propelled with great rapidity. It further consists of means for preventing the car from leaving its tracks. Referring to the drawings, A represents a tube, which is properly laid in a trench or otherwise supported, as desired,:and containing a plunger, B, which is properly packed so as to have an air-tight joint with said tube. The upper portion of the tubehas a longitudinally 0 extending slot, 0, through which passes an arm or bar, D, which is firmly secured to the plunger B. .At the top of the tube are sliding gates E, which are adapted to closethe slot (3, the same being'placed horizontally side by 5 side throughout the length of the tube and tongued and grooved so as to form tight joints between the edges that are in contact, the tube having a ledge, F, which projects from the periphery thereof and serves to sustain the l gates E in their opening andclosingmotions 'lhe'gates have slots G, which extend intransverse direction andreceive bolts H, whieh'are' secured-to the top of the tube at or about the ledge F thereof," and serve to guide the gates and preventdisplacementthereof. Connected with each gate and its respective bolt H is a ispring, J, the object whereof is to closethe {J- gate and hold it in closed position. V Y

which is so disposed thatwhenit is in motion it strikes What may be termed the ,inner ends of the gates, and thereby forces thein laterally, whereby they are opened and the slot 0 is uncovered.

To prevent abrupt action of'the lugK on the gates, the latter have at their corners in- I clined shoulders L, which are adapted to be struck by said lug, it being noticed that the space formed by the shoulder L thereof prio'r I to contact with said shoulder, this construction of the corners avoiding openings thereof when the gates are closed. I I V a In the wall of the'slot O opposite to the 7 ledge F is a groove, M, to'receive tongues 'N, formed on the inner ends of the gates E,. whereby'the gates when closed form tight joints with said wall.

ing the same. i I 7 v The operationis as follows: Air is exhausted in the tube in advance of the plunger and whereby the plunger is foreiblypropelled, the car being, as is evident, carriedalong with the same, the motion being of great rapidity.

l The arm or bar D has secured to or forjined I with it a wedge-shaped or inclined lug, K, 6

lug rides overeaeh corner of a gate in the ample time for the gates to close before reachpressure created therein at the rear thereof, 5

The upper end of the' armor bar Dis cona a'msaa When the lug K reaches a gate, it presses ter quickly closes, owing to the action of the spring J, the closing of the gate being occasioned before the rear of the plunger reaches said gate. whereby the air under pressure in the tube is prevented from escaping. As the lug K is behind the front end of the plunger, no gate is opened in advance ofsaid end. Consequently the vacuum in the tube in front of the plunger is preserved.

Having thus described my invention, whatI claim as new, and desire to secure by Letters Patent, is

1. A device of the character described, having a slotted tube which is provided with sliding gates having inclined shoulders,a plunger in said tube, and an arm connected with said plunger, having a wedge-shaped lug adapted to be brought in contact with said inclined shoulders, the parts being combined substantially as and for the purpose set forth.

2. A device of the character herein described, having a slotted tube with slotted sliding gates thereon, a plunger with an arm provided with a lug, and the bolts H, secured to the top of said tube, substantially as and for the purpose set forth.

3. A slotted tube and a plunger therein, in combination with sliding gates and opening and closing devices therefor, said gates having tongues and grooves, substantially as and for the purpose set forth.

4. A slotted tube and a plunger therein, in combination with sliding gates and operating devices therefor, said tube and gates having grooves and tongues, substantially as and for the purpose set forth.

5. In a device ofthe character herein described, a slotted tube, in combination with slot-ted gates thereon, having inclined shoulder L, a plunger with an arm provided with the wedge-shaped lug K,the bolts H,secured to said tube and located in the slots of said gates, and springs adapted to close said gates, substantially as described.

, CHRISTIAN H. GOEBEL.

\Vitnesses:

, JOHN A. WIEDERSHEIM,

J AS. F. KELLY.

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