US286706A

US286706A - Endless band knife

Info

Publication number: US286706A
Authority: US
Publication date: 1883-10-16
Anticipated expiration: 1900-10-16

Description

(No Model.) i I J. A. KAY.

BNDLESS BAND KNIPE.

No. 286.706. Patented Oct. 16), 1883.

nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn c PATENT OFricE.

JOSHUA A. KAY, OF

MELBOURNE, vicromA, AssIGNon or oNn-HALF ro DAVID BEATH, or sAMn rLAcn.

ENDLESS BAND-KNIFE.

SPECIFICATION forming part of Letters Patent No. 286,'706, dated October 16, 1883.

Application filed April 16, 1883. (No model.) I'atented in Victoria May 19,182,No. 3,223; in South Australia August 22,1882,

No. 270, and'in New South W'ales October 27, 1852. i

.To a/ZZ whom it may conccrn:

Be it known that I, JosHUA ALEXANDER KAY, a subject of the Queen of Great Britain,

succession of curves, or a series of angles, or

partly curved and partly angled,or, in fact, any line not being a straight line, which will enable the knife to give a succession of drawing cuts, instead of the one continuous cut of the baml-knives now in use.

The object of this invention is to reduceithe friction and lessen the heat produced'by such inotion of band-knives. This I accomplish by making a series of holes in the widest portion i of such knives, which holes also have the effect of carrying along with them any loose refuse and discharging it as it emerges from the material through which it is passing.

' I sometimes make my band-knives double edged, so that when one edge is worn out it can be reversed, and what was formerly the edge of the knife becomes the back.

In my drawings I have shown three different illustrations of the way in which my invention canbe carried into effect. Figure 1 shows a band-knife with a wave edge; Fig. 2, a band-knife with its edge describing a succession' of curves, and Fig. 3 with its edge describing a series of angles, while Figs. 4 and 5 are cross-sections of the knife with chisel edge and knife edge. The blade of the knife is ineach case marked A, and the holes therein a a. It will be noticed that in all these illus- In making my endless band-knives I take a narrow strip or band of steel and stamp out of it at intervals along the entire length of one or bot-h of its edges aseries of curv es or notches or indentations, as shown at d, Fig. 1. The effect of this is to leave the blade with a succession of alternately convex and concave surfaces forming a wave edge. This wave edge is then filed or ground down sharp ,like a chisel, as shown in cross section; or it might be notched or indented and beveled during the process of rolling, Fig. 4; or it may take the form shown in cross-section at Fig. 5. The ends of the band or strip are then brazed together to form an endless flexible knife.

The holes (L may be punched or stamped out at the same time that the wave or notched or indented cutting-edge is formed, and either before or after brazing, or otherwise fastening together the cnds of the strip or band to form the endless band-knife. g

WVhat I claim as my invention, and desire to secure by Letters Patent, is-

An endless band-knife having awaved cutting edge or edges, substant-ia-lly as set forth, and perforations a, for the purpose of reducing friction and preventing heating, as described. v

J OSHUA ALEXANDER KAY. IVitnesses:

' EDWD. Tyrim WALTER SMYTHE BAYsroN.

trations the cutting-edge is made interstitial. g