US143887A

US143887A - Improvement in feeding devices for middlings-purifiers

Info

Publication number: US143887A
Authority: US
Publication date: 1873-10-21
Anticipated expiration: 1890-10-21

Description

nfcnAlK. Feeding-Devices for MiddI-ings Purifiers.

No. 143,887. Patenfed'o`ct.21,1a73.

UNITED S'rrrrns` N PArnrrnQrrJ-na ROBERT CRAIK, OF MONEY GREEK, MINNESOTA.

IMPROVEMENT IN FEEDING DEVICES FOR MIDDLINGS-PURIFIERS.

Specification forming part of Letters Patent No. 143,887, dated October 21, 1873; application filed March 25, 187 3.

To all whom t may concern Be it known that I, ROBERT GRAlK, of MoneyY Greek, in the county of Houston, State of Minnesota, have invented an Improvement in Middlingsseparator, of which the following is a specification The invention relates to an improvement in conveyers for middling-separators, and consists in providing the conveyer with a series of secondary nights7 for the purpose hereinafter described.

The figure in the accompanying drawing illustrates a vertical section of a middlings-puriier havingymy improved conveyer applied tothe same. v

A is the frame which carries the operating mechanism. L is the drivin g-pulley attached to the shaft B, and gives motionto the ma chine. A A are vibrating frames, supported by the springs q q, to the bottom of which is attached bolt-cloths.` Upon the shaft B is secured a cam, which, by its eonnection,vibrates the frames A A. H is a suction-fan, which is caused to revolve bythe pulley g being belted to the pulley f on the shaft B. This fan causes the air to pass up through the bolts from the openings in the adjustable divisionboards F F. M is the feed-hopper, and r is an adjust-` able perforated slide, which is vibrated by its connection with the `bolt-frame A', and under this is the movable bottom s, which is also perforated to correspond with the slide r, for regulating the supply of feed. The brushes C are made with a bearing at each end, and are supported in the boxes c c, which rest and slide upon the horizontal bars D. These brushes are caused tohave a reciprocating movement across the bottom of the bolt-cloth by the crank 7c on the conveyer G, through the rock-shaft K and arms E E, as shown. G represents my im proved conveyer-shaft, which is provided with one thread of flights, m, and at one end there are added several flights, o, and an opening, a, made in the one already on. This will allow the middlings to accumulate and permit each of the secondary or additional flights 0 to take a portion and deliver it tothe pipe I), and thus feed it evenly to the millstones. The divisionboards F F are adjusted by thumb-screws c' 17, and regulate the draft of air. The tube J is arranged at the top of the separator, so as to take air from off the end of the frames A and counterbalance the draft of air inward at that point, which obstructs the passage of the light bran from that end of the frame, and, by means of the valve'a., the light bran may be caused to pass off fast or slow, as desired.

The slide r and movable bottom s of the hopper M are operated by means of the levert and vibrating frame A.

I have described the entire middlings-separator, but do not claim such, as my invention only consists in the peculiar manner of constructing the conveyer G.

I claim- The conveyer G, with a series of secondary nights, o o, for feeding the middlings evenly to the pipe P, as herein described.

In testimony that I claim the foregoing I have hereunto set my hand.

ROBERT CRAIK.

Vvritnesses N. BUCK,

J AMES MoINTosH.