US1095693A

US1095693A - Concaves for thresher-cylinders.

Info

Publication number: US1095693A
Application number: US79499913A
Authority: US
Inventors: August Anderson
Original assignee: NAT AUTOMATIC CONCAVES AND TOOTH Co
Current assignee: NATIONAL AUTOMATIC CONCAVES AND TOOTH Co; NAT AUTOMATIC CONCAVES AND TOOTH Co
Priority date: 1913-10-13
Filing date: 1913-10-13
Publication date: 1914-05-05
Anticipated expiration: 1931-05-05

Description

v A. ANDERSON. GONGAVES FOR THRESHEB. CYLINDERS.

APPLICATION FILED OUT. 13, 1913.

1,095,693. Patented May 5, 1914,.

- 2 SHEETS-SHEET I 59/ Y \Jfifnzssts SNVSINTOK v uguf Ana/@1500 1 J I I bi Amr'neya. I

A. ANDERSON. GONGAVES FOR THRESHER CYLINDERS.

APPLICATION FILED OCT. 13, 1913.

1,095,693. Patented May 5, 1914.

2 SHEETS-SHEET 2.

\Jrrwresrs I 2W I 4/70 9715 /7 UNITED STATES PATENT OFFTDEQ AUGUST ANDERSON, OF ST. PAUL, MINNESOTA, ASSIGNOB, BY DIRECT AND MESNE ASSIGNMENTS, TO NATIONAL AUTOMATIC CONCAVES AND TOOTH COMPANY, OF ST. IPAUL, MINNESOTA, A CORPORATION OF MINNESOTA CONCAVES FOR THRESI-IER-GYLINDERS.

Specification of LettersPatent.

Patented May 5, 1914.

Application filed October 13, 1913. Serial No. 794,999.

To all whom it may concern Be it known that I, AUGUST ANDERSON, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Concaves for Thresher-Cylinders, of whiclrthe following is a specification.

My invention relates to improvements 1n cylinder concaves for threshers, its object being particularly to provide improved means allowing the easy and effective adjustment of the concaves to adapt the same to handling different kinds of grains.

To this end the invention consists in the features of construction, combination, and arrangement of parts hereinafter described and claimed.

In the accompanying drawings forming part of this specification, Figure 1 represents a side elevation of a portion of a thresher fitted with my features of improvement; Fig. 2 illustrates a cross section through the cylinder and concaves showing the operating mechanism for the concaves in elevation; Fig. 3 is a detail view of the actuating slide for one of the concaves showing the supporting framework broken away; Fig. 4L

is a detail View of one end of my improved concaves; and Fig. 5 is a detail view, broken away, of part of the thresher framework and supported pawl and ratchet mechanism forming part of my invention.

Referring to the drawings, A represents an ordinary thresher cylinder supported upon a shaft 2 journaled in the sides 3 of a thresher. The cylinder carries the usual teeth 41-. Arranged below the cylinder are the concaves B, O, D and E. The concaves B, O, and D are provided with teeth 5 cotipcrating with the cylinder teeth. The concave E is untoothed. The end concave E is slidable in a curved groove 6 in the concave supporting frame. The concave supporting frame has fulcrum support 8 at the rear of the cylinder and forward of the cylinder is supported upon an eccentric 9 which fits into slots 10 in the frame 7. The eccentrics 9 are supported upon a shaft 11 j ournaled in the sides of the thresher frame, one end 12 of the shaft being squared to receive an actuating handle and said shaft supporting, adjacent the squared end, a ratchet wheel 13 engaged by the pawl 14. Thus the turning of the shaft 11 and supported eccentrics, will turn the concave frame upon its fulcrum into adjusted relationship with the cylinder. I

The rear untoothed concave E is connected by links 15 with the outer ends of the lever arms 16 supported upon the shaft 17 journaled in the side walls of the thresher. One end 18 of the shaft 17 is squared to receive an actuating handle and supports a ratchet wheel 19 engaged by the pawl 20. Thus the concave E is adjustable in the groove 6 by the turning of the shaft 17 The inside concaves O and D are similarly supported upon slides 21 and 21' arranged in pairs, the concaves being supported upon the slides through the medium of connected

ears

22 and 23, respectively. The slides 21 have lmk connection 24 with the outer ends of the lever arms 25 supported upon the shaft 26 journaled in the sides of the thresher framework. One end 27 of the shaft 26 is squared to receive an actuating handle and supports a ratchet wheel 28 which interlocks with a pawl 29. Similarly the slides 21 are connected by links 30 with the outer ends of the lever arms 31 supported upon a shaft 32 j ournaled in the ides of the thresher frame. One end 35 of the shaft 32 is squared to receive an actuating handle and supports a ratchet wheel 33 engaged by a pawl 34.

In operation, where certain grain, as wheat, is to be handled, the parts will stand in the position shown in Fig. 2 with all the concaves standing in alinement in the groove 6. \Vhere in treating other grain as rye or oats it becomes necessary to decrease the number of concaves the concave D, or both the concaves O and D may be quickly carried out of the groove 6 by the actuating of either or both of the

shafts

26 and 32. The releasing of any one of the pawls from the corresponding ratchet wheel will allow the associated supporting shaft to be turned by a handle applied to the squared end of the shaft to ac- I B is held stationary by the lip 87 By turning the shaft 11 the concavesupporting frame will be turned upon its fulcrum support through the medium of the eccentrics toward and from the cylinder. It thus will be evident that I secure means by which the concave sections may be very quickly and easily removed without necessitating the stopping of the machine to allow removal. I also provide a very simple and easy actuating concave supporting frame.

I claim as my invention:

1. In combination with a thresher cylinder, a plurality of concaves supported adjacent said cylinder, means for sliding one of said concaves out of alinemcnt with the remaining concaves, and means for sliding one of the remaining concaves into the gap left by the removed concave.

2. In combination with a thresher cylinder, a concave supporting frame fulcrumed adjacent said cylinder, means for adjusting said frame upon its fulcrum toward and from the cylinder, a plurality of concaves slidably supported upon said frame adjacent said cylinder, means for carrying one of said concaves out of alinementwith the remaining concaves, and means for removing one of the remaining concaves into the gap left by the removed concave.

In combination with a thresher cylinder, a plurality of concaves slidably sup ported in alinement adjacent to said cylinder, means for independently carrying the central concaves out of alinement with the main concaves, and means for sliding one of the remaining concaves into the gap left by the removed concaves.

In testimony whereof I affix my signature in presence of two witnesses.

AUGUST ANDERSON.

Witnesses:

H. S. JOHNSON, I-I. SwANsoN- Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.