US235619A

US235619A - Screw-conveyer

Info

Publication number: US235619A
Authority: US
Publication date: 1880-12-21
Anticipated expiration: 1897-12-21

Description

(No Model.)

H. W. OA,LDWELL.

Screw Gonveyer.

No. 235,619 Patented Dec. 21,1880.

B B E B 52 E EE N.PEIERS, PHOTO-UTHOGRAPMEH, WASHXNGTON. n c.

lJNiTED STATES PATENT OFFI E,

HENRY W. CALDWELL, OF ST. LOUIS, MISSOURI.

SCREW-CONVEYER.

SPECIFICATION formingpart of Letters Patent No. 235,619, dated December 21, 1880.

Application filed November 18; 1880. (No model.)

To all whom it may concern:

Be it known that I, HENRY W. CALDWELL, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Screw-Oonveyers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My improvement relates to the coupling by which the sections of a tubular conveyershaft are connected together at the point of bearing; and it consists in the combination, with said sections or lengths of shaft, of a cylindrical plug which itself forms the journal of the shaft at that point, (extending through the hanger-box,) the ends of the sections being reenforced by aferrule. Bolts pass through the tube-sections and the coupling-plug.

In the drawings, Figure 1 is a side elevation of the invention. Fig.2is alongitudinal section, with the greater part of the coupling-journal in side View. Fig. 3 is a section at :10 00, Fig. 2. Fig. 4 is a section at a0 :12, Fig. 2.

A A are parts of .two similar sections or lengths of a screw-conveyer, upon which are spiral flights B. The ends of the sections A are re-enforced by collars O, that are welded to the tubes, so as to increase their strength at that point.

D is the coupling-bar or mandrel, which have two bolts in each tube -section at the coupling,thebolts being placed at right angles to each other.

The central part of the mandrel D forms the journal of the shaft A A, and has bearing in the box F of the hanger F. I prefer to insert between the bolt-lugs F of the hanger-box shims f, of wood or paper, which will allow a small amount of latitude to the movement of drel D is made to fit easily in the tube-sections A, and the bolt-holes in the mandrel are bored of a size to allow the bolts to pass through easily.

In manufacturing, my coupling journals or mandrels (all of one size) are made of similar pattern, and the sh aft-sections are all similarly bored, so that they are interchangeable.

I claim 1. The combination of sections A A, coupling-mandrel D, forming a shaft-journal, bolts E, and hanger F, for the purpose set forth.

2. The combination, with the hangerF and shaftsections A A, of the mandrel D, freely fitting the interior of the sections A, and bolts E, passing through the sections and loosely through the mandrel.

HENRY W. CALDWELL.

Witnesses:

SAML. KNIGHT, GEO. H. KNIGHT.