US18688A

US18688A - Improvement in the measuring apparatus of seed-drills

Info

Publication number: US18688A
Authority: US
Publication date: 1857-11-24
Anticipated expiration: 1874-11-24

Description

0. C. GREEN.

. Seed-Dropper.

Patented Nov. 24, 1857.

UNITED STATES PATENT OFFICE.

OLIVER (I. GREEN, OF DUBLIN, INDIANA.

IMPROVEMENT IN THE MEASURING APPARATUS 0F SEED-DRILLS.

Specification forming part of Letters Patent No. 18,688, dated November 24, 1857.

specification.

My improvement relates to a peculiar construction of reciprocating slide and its accessories adapted to measure out sted in a regular and continuous stream and with the avoidance of any cutting, bruising, or crowding of.

the grains.

In the annexed drawings, Figure 1 is a perspective view of the seed-box, 800., with a portion removed to expose the passages, the slide being at one extremity of its stroke. Fig. 2 is a perspective view of the same upside down. Fig. 3 is a section ofthe same at the line a :12, Fig. 2. -Fig. 4 represents in perspective the upper side of the slide. Fig. 5 is a similar view of the under side of the same.

A represents a portion of the seed-box of a grain-drill, having in position to correspond with each drill-tooth a funnel-shaped rectangular aperture, B, leading to the slide 1).

O c c is a sheath or staple which holds the slide 1) closely against the bottom of the box, confines it to its proper path, and acts in conjunction with it to measure out the grain. This sheath has the form of an inverted roof, the two slopes c c of which increase in length toward their apex or junction, as represented. The slide D is formed transversely to tit the sheath, and is traversed vertically by an aperture, d d, which is bisected by a transverse septum, 1, whose top surface is lower than that of the slide by an amount slightly greater than the thickness of a grain of wheat. Extending inward from the respective ends of the aperture (1 d are two similar projections or beaks, 2 2, whose top surfaces slope downward, so as to bring their points on a level with the septum 1. In the under surface of the slide are formed four channels or ventages, 3 3 3' 3, which, each commencing at a corner of the aperture d d, (of size to admit one or more grains,) extend longitudinally with decreasing depth, so as when not discharging to confine the grain without bruisingit.

It will be seen that the central depressed portion of the sheath (J, in connection with the aperture cl (1, forms a small constantly filled sink or cavity, from which the grain can escape only through the more elevated channels 3 3 3 3. There is thus a body of grain constantly both above and below the ventagcs-a feature which is formed effectually to remove the liability to grind and cut the seed and choke the delivery, to which slides which deliver from their lowest parts are subject. The slide-passages throughout are so constructed as to avoid injury to the grain. The top of the septum 1 and of the salient portions of the beaks 2 2 are depressed the full thickness of a grain, and each pair 3 3 or 3 3 of ventages extend on their non-discharging stroke just so far beyond the sheath as to avoid crushing or cutting the grain, while at the same time it is sufiicicntlyconfined.

Long-pointed grains-such as oats and ryeare often very troublesome from their tendency to crowd together in parallel masses, and thus completely block each others passage. To overcome this difficulty I have so formed and arranged the septum 1 and beaks 2 2 that as they move athwart the descending column of grain they effectually break and derange its tendency to parallelism, and thus maintain an easy flow of grain.

As the slide works transversely of the line of draft, it follows thatthe droppings from the two ventages of one pair will not fall quite simultaneouslyon the customaryinclined chute, and this, in conjunction with the fact of the vcn'tagcs being located at the extreme corners ot' the aperture 61 d, results in so nearly continuous at discharge that no indication of the intermittent action of the slide is apparent by the line of seed on the ground.

If preferred, the slide may be arranged in segmental form concentric with and operated by a rock-shaft.

I claim as new and of my invention herein- The construction and arrangement, as set forth, of the sheath 0 and the slideD 12, pro vided with the described passages d d 3 3, operating as explained, in combination with the seed-box A of a grain-drill.

In testimony of which invention I hereunto set my hand.

OLIVER G. GREEN. Witnesses:

GEo. H. KNIGHT, J AS. H. GRIDLEY.