US289316A

US289316A - Apparatus for transferring grain

Info

Publication number: US289316A
Authority: US
Publication date: 1883-11-27
Anticipated expiration: 1900-11-27

Description

(No Model.)

-L. SMITH.

APPARATUSVPOR TR'A'NSFER'RI'NG GRAIN, aw. i No. 289,316. Patented Nov. 27, 1883,

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. UNITED STATES PATENT Orricet LYMAN SMITH, OF KANSASOITY, MISSOURI.

APPARATUSFOR TRAINSFERRING GRAIN, 8w.

SPECIFICATION forming part of Letters Patent No. 289,316, dated November 27, 1883.

Application filed October 31, 1883.

To all whom it may concern Be it known that I, LYMAN SMITH, of Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Pneumatic Apparatus for Lifting, Discharging, and Transferring Grain, &c., of which the following is a specification.

. The present invention is adapted to the pneumatic system which is described inthe following patents: No. 268,303, dated November 28, 1882, to L. La Rue Smith; No. 268,305, dated November 28, 1882, to Lyman Smith;

and No. 279,034, dated June 5,1883, to Lyman Smith. In the system as described in the said patents the grain is lifted in the supply or elevating pipe by the production of a partial vacuum in a chamber at the upper end of said pipe and discharged therefrom by gravity or the weight of the grain.

My invention has for its object the facilitating of the discharge of grain by gravity, and to remove all atmospheric resistance to such discharge.

The essential feature of my present invention is the closing of the upper valve, or that between the vacuum-chamber and the eduction-tube, by the admission of atmospheric air under it before the lower or grain-discharge valve opens or begins to open, so that the grain before the beginning of the discharge is removed from the influence of the vacuum, and that there can be no admission of air at the point of exit of the grain to impede the discharge. a

Figure l is a vertical longitudinal section 0 the vacuum chamber, grain eduction tubes, and appendages. Fig. 2 shows in exterior elevation a different arrangement of the valveconnections. Fig. 3 is an enlarged view, showing the construction of the lower or discharge valves.

(Ne model.)

springs 9 being to force out the ring and rubber. A stop, 2', on the eduction-tubef, and a similar stop, t", on the inside of the metallic ring h, by their engagement prevent the projection of the rings from the recess.

It will be understood that when the discharge-valve k is horizontal, or in the position shown at the right of Fig. 3, the rubber ring is forced up fully into its recess; but that when the discharge-valve begins to move or assume an incline by the weight of grain thereon the rubber ring follows it up, still for a time keeping the discharge-valve closed. The moment the discharge-valve has moved, but be fore it has in any degree opened, the air-valve c has been allowed to descend and its opening 10 made to register, or partly register, with the openings in its guard at and the opening y in the wall of the eduction-tube, so that the rush of air from without instantly closes the upper valve, 2. The valve 2 is therefore closed before the discharge-valve has begun to open, and no air can enter at the discharge-valve to fill the vacuum from below, and thus impede the discharge of grain by atmospheric pressure.

It is apparent that the object sought to be attained may be effected in other waysas,

for instance, by putting a flexible or yielding face on the discharge-valve-and I do not wish to restrict my invention to any particular devices for accomplishing the end in view.

Having described my invention, I claim 1. In a system of pneumatic elevation, dis charge, or transfer of grain, &c., a method which consists of admitting air above the mass to be discharged before the commencement of the discharge, substantially-as set forth.

2. In a system of pneumatic elevation, discharge, or transfer of grain, '&c., a method which consists of closing communication between the exhauster and the mass to be dis- Similar letters of reference indicate similar parts in the respective figures.

The lower end of each of the eduction-tubes 45 f f isprovidedwith arecessed flange, 9, within charged before the commencement of the discharge, substantially as setforth.

3. In a system of pneumatic elevation, dis charge, or transfer of grain, &c., the combination of a vacuum-chamber, eduction-tubes, upper valve, 2, air-valves, pivoted dischargevalve, connections between the dischargevalve and the air-valves, and a cushion or yielding recess of the flange g, the tendency of the face interposed between the bottoms of the eduction-tubes and the discharge-valve, substantially as set forth.

4:. The eduction-tubes and pivoted duplex discharge-valve, combined with a cushion or 5 yielding face interposed between the bottoms of the eduction-tubes and the discharge-valve, substantially as set forth.

5. The eduction-tubes f, having the recessed flanges rubber rings h, and springs g, com- IO bined with the pivoted duplex discharge-valve k, substantially as set forth.

6. The eduction-tubes f, having the recessed flanges g and stops 6. the metallic rings h, having stops i, the rubber rings h, and the springs 9, combined with the pivoted duplex discharge- I 5 valve 70, substantially as set forth.

In testimony whereof I have hereunte set my hand this 31st of Uotolwr. A. D. 1883.

LYMAN SMITH. \Vitnesses:

PHILIP MAURO, GEORGE H. HOWARD.