US846377A - Band-cutter for threshing-machines. - Google Patents

Description

No. 846,377. I

M. c. ALB'ERTSON.

BAND CUTTER FOR THRESHING MACHINES APPLIOATIGN FILED MAR.3, 1906.

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J7 l7 8 14 15' 15 Z] I J6 u ll Z9 By A TTOHNE Y8 PATENTED MAR. 5, 1907.

MARTIN CHRISTEN ALBERTSON, OF (TAKES, NORTH DAKOTA.

BAND-*CUTTER FQR Ti-iFiESHlNG-MACHINES.

Specification of Letters Patent.

fatented March 5; 1907'.

Application filed March 3, 1906. S-Tl'ifll 1%. 304,039.

To (DZ/Z whom it nut/y concern:

Be it known that I, MARTIN CHRISTEN AL- BERTSON, a citizen of the United 8 04108, i nd a resident of Oa res, in the county of Dickey and State of North Dakota, have invented a new and Improved Bane-Cutter for Threshingi\[=.ichines, of which the following a full, clear, and exact description.

The purpose of the invention is to provide a special mounting for the be -cutting knives and their carryin -shafts, wherein the knives are fast upon the shifts and the shafts are free to turn in the heads of a reel.

A further object of the invention is to provide automatically-acting friction-i res which operate upon the shafts to prevent.

them from turning during the time the knives are in norma-l ODQIs-lllOll, the said or 1 ingso applied that should the rapid v of the feed of the bundles tend to choke the instchine the s; r brakes will permit knifec arrying Shit ts to re volve and t1 sir knit es to roll over the bundles, thus obviating JlHOW- ing off the drivcbelt and consequent loss of time and also preventing a possible breakage of the knives.

The invention consists in the novel struction an'l combination of the parts, as will he hcreirnfter fully set and pointed out in the claims,

Reference is to he hid to the accompanying i'lrawings, forming a part of this specification, in which similar chari'icters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional side elevation of the bundle-receiving section of a threshing-machine. Fig. 2 is a sectional front elevation of the improved device se arated from the easing shown in Fig. 1, and Fig. 3 is a vertical sccconvcral forth,

tion taken through thehand-cutting device shown in Fig. 2 at a point QtiJzI-Gfillt to one of the heads of the reel-frame for the device.

A represents the delivery attachment to a threshing machine, which is in the form of the usual frame, (designated as 0,) and in connection with this frame a any approved form of a feed-table or a feed device B is employed, the said feed-table being adapted to carry the bundles to the mouth of the attachment A. 4 1

Under the form of attachment as illustrated in Fig. 1 I employ a receiving-table C, which extends from the front to the rear, curving down at the latter point, and the said table is more or less arched. Over this table chain conveyers 10 are made to travel, being operated by sprocket-wheels 10*, located on a front shaft 10 suitably driven. After the ties of the hundle have been cut the grain drops upon the s; i chain conveyers 10 and is carried to the rear of the attachment A, so as to he delivered to the concave and cylinder of the tl reshing-machinc. T have also illus trsted in connection with this attachment an upper feeding device D, which is in the form of a su bly-supported endless belt having outw.duly-extending teeth thereon, and the Salfl feeding device is so placed that the teeth will assist in carrying the grain over the receiving-table C. Furthermore, in Fig. 1 I have illustrated a fan C as located beneath the receivingtaliile C.

E represents the band-cutter to which this application particularly applies. This band-cutter is mounted to turn in the forward upper portion of the frame a, being located above the delivery end of the bundlecarrier B and forward. of the endless feed device D. This band-cutter is shown in deteil in Figs. 2 and 3, and the frame thereof consists of two heads 11, arranged at a suitable distance apart, connected by and secured to a shaft 12, the said shaft extending beyond both heads. This shaft 12 is shown as provided at one end with a balancewheel 13, and adjacent to the said balancewheel a driving-pulley 14 is secured, while at the opposite end of the shaft a pulley 15 is attached, adapted to communicate motion to other parts of the machine by means of a suitable belt, or the pulley 15 may be the driving-pulley and the pulley 14 the driven; but I desire it to be understood that either one of the pulleys 14 and 15 may be dispensed with, if so desired. Shafts 16 are mounted to turn in the heads 11 of the said frame, and disk cutters or knives 17 are sccurcd on the said shafts. The arrangement of these knives or cutters 17 is preferably such that the cutters or knives of one shaft will be opposite the space between the cutters or knives of an adjacent shaft.

' Each shaft 16 is provided with a brakedisk 18, located at the end portion of the shaft between the heads 11 and adjacent to one or the other of the said heads. These brake-disks 18 are so placed that one brakedisk is at the right-hand end of one shaft and another disk is at the left-hand end of the opposing shaft, so that the brake-disks are alternately placed.

Each brake-disk 18 is adapted to be acted thrown off when the bundles are too rapidly upon by a friction-brake 19. These brakes are best shown in Fig. 3, and the said frictionbrakes are curved at a point between. their ends to conform to the peripheral faces of the brake-disks. Each friction-brake 19 is pivoted by a suitable pin 19 to a head 11 at one end, the'fopposite end of each frictionbrake being enlarged or weighted, as is shown at 19 When the band-cutter is operated, the lowermost shaft 16, or that shaft which carries the cutters or knives 17 adapted to act on the ties of the bundles, is held practically stationary or fixed in the frame of the device, by reason of the friction-brake 19, carried by that shaft, gravitating to an engagement with the friction-disk 18 on said shaft. In fact, as the entire frame revolves the brakes act automatically on the lowermost shafts, while the brakes on the shafts which are rising drop downward away from the shafts. In the event that the bundles are fed too rapidly to the band-cutting device the resistance to the brake on the uppermost shaft is overcome, and said shaft will then turn in the frame of the device, and the cutters or knives will simply roll over the bundles, still exerting a cutting action thereon, but not to the former extent. Thus it will be observed that the drivingbelt need not be fed and the machine is liable to be choked, as the band-cutting device will relieve itself and will not be stopped by an undue accu mulation of bundles, which accumulation can be quickly reduced by the attendant of the machine.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a band-cutter for threshing-machines, a shaft, a driver for the shaft, a frame secured on the shaft, comprising opposing heads, shafts mounted to turn in the said i heads, disk cutters secured on the latternamed shafts, brake-disks secured on the shafts j ournaled in the said heads, and gravity friction-brakes for the said brake-disks, pivoted upon said heads.

2. In a band-cutter for threshing-machines, a main shaft, a frame carried by the main shaft, comprising opposing heads secured to the main shaft, and shafts mounted to turn in the said heads, disk cutters secured to the shafts carried by the said heads, the said disk cutters being in staggered arrangement, brake-disks secured to the shafts journaled in the heads, and friction-brakes adapted for engagement with the said brakedisks, which friction-brakes are pivoted to the said heads at one end and are weighted at their opposing or free ends, for the purpose specified.

3. In a band-cutter for threshing-machines, a casing adapted as an auxiliary attachment to a threshing-machine, a main shaft journaled in the said casing, which shaft is provided with a driving-pulley, a frame carried by the main shaft, comprising opposing heads, shafts journaled in the said heads, cutters secured on the latter-mentioned shafts, brake-disks secured on the cutter-shafts, the brake-disk 011 opposing shafts being at opposite ends of the said shafts, and friction-brakes pivoted at one of their ends to the heads of the said frame, being weighted at their opposite or free ends, the body portions of the said frictionbrakes being curved to fit snugly to the peripheral surfaces of the said brake-disks, for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MARTIN CHRISTEN ALBERTSON.

\Vitnesses S. G. CADY, E. J. MOORE.

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