US1271626A - Band-cutter for threshing-machine feeder. - Google Patents

Description

H. F. SNYDER. BAND CUTTER FOR THRESHING MACHINE FEEDEHS.

APPLICATION FILED DEC-7,19l4- 1 ,27 1,626. Patented July 9,1918.

W 7265365. I jweid r ax flowardjlfigder a M y' M W N TED STATES PATENT onrioE.

HOWARD F.-SNYDER-,

ornnwron, IOWA, ASSIGNOR rornn MAYTAG COMPANY, or NEWTON, IO A, A conronn'rronor IOWA. M j

BAND-CUTTER FOR, THRESHIN'GnMACHINE FEEDERS.

Specification of Letters Patent.

Patented July 9, 1918.

Original application filed September 6, 1912, Serial No. 718,865. Patent No. 1,200,253, dated October 3, 1916. Divided and this application filed December 7, 1914. Serial No. 875,954.

To all whom it may concern Be it known that I, HOWARD F. SNYDER, a citizen of the United States, residing at Newton, in the county of Jasper and State of Iowa, have invented a new and useful Improvement in Band-Cutters for Threshing-Machine Feeders, of which the following is a specification.

This invention relates to a band cutter for threshing machine feeders and is a di vision of my application No. 718,865, filed September 6, 1912, and patented Oct. 3, 1916, No, 1,200,253.

It is an object of my invent-ion to produce a band cutter for threshing machine feeders which is compact and strong and which is extremely light in weight.

It is another object of my invention to supply a band cutter for threshing machine feeders in which the parts may easily be as sembled or disassembled and in which the parts when assembled are firmly clamped and locked into position.

It is another object of my invention to supply a band cutter for threshing machine feeders in which the plates may be individ ually adjusted into a plurality of different positions and when so adjusted may be positively and firmly locked in position.

In the drawing Figure 1 is an elevation partly broken up of my band cutter.

Fig. 2 is a sectional end view of Fig, 1.

Fig. 3 is an elevation of one of the plates.

. Fig. 4 is a rear end view of the same.

Fig. 5 is an end view of the knife holder. Fig. 6 is an elevation of the same.

The band cutting knives 1 are preferably of the curved shape, shown in Fig. 3, with a serrated cutting edge and with a base 2 fluted, as shown, for fitting tightly within a slot 4 in the outer edge of the knife holder 5. Each knife holder has a large central opening ,6 for the reception of the driving shaft and is also provided with six regularly spaced openings 7 through which transverse locking bolts are passed. The holder is of circular outline except, at its front face, that face beingstraight. across with side reinforcements 8 rigidly attached and forming the slot 4 into which the fluted base of the knife is driven to secure firm attachment between the knife and holder. The reinforcements 8 may be cut away at a plurality of points to form openings 9 at which the inner edge of the knife base is exposed and made accessible. This is also of advantage in the manufacture of the castings to vent and support the core of the openings for the knife.

Fig. 1 shows the knives as assembled on their driving shaft 10. That shaft is round in section and carries flanges 11 keyed thereon and between which the six knife holders and their spacing cylinders 12 are firmly clamped by six bolts 13 mounted in the flanges and passing through the holes 7 of the knife holders. The spacing cylinders 12 are preferably of sheet steel slipped on over the tightening bolts 13 and acting as spacers and clamps for the knife holders, while at the same time giving rigidity to the structure as a whole without increasing its weight unduly.

Inasmuch as there are six holes in each knife holder, that holder can be put on the shaft 10 in six dilferent angular positions, so that by staggering the knives, as shown in Fig. 1, a uniform and efiioicnt operation of the band cutter is insured. All of the knives are interchangeable at will from one position to another, and the symmetry and uniformity in detail make renewals an easy matter.

By using a plain round shaft, as above described, free from hexagonal shoulders or areas, no considerable machine work is required at the journaled ends, and the shaft is relatively light and inexpensive. The tubular spacers between adjacent knife holders give a maximum of strength with a minimum of material and labor.

I claim:

In a band cutter, a central shaft, a pair of end plates, a plurality of knives each having a plain hub portion provided with a plurality of openings spaced therearound, a plurality of longitudinal bolts passing through said apertures and secured at their ends in said end plates and a plurality of my name to this specification in the presence plain cylnlclrifal shells aldapted to space of two witnesses. 21 art sai u ortions t e inner circumfgrence. of whiel i shells entirely surrounds HO R 5 said boltswhereby'said cylindrical shells Witnesses r are supported by said bolts. 7 V H. E. GALUsHA, In witness whereof, I hereunto subscribe W. L. PIG ENS.

Copies of this patent may lie-obtained" fiatflkrewen'tsedch, by addressing the" Gom1nissioner of ratents, Washington, 10,. 0.!

Images