US73961A - wainwright - Google Patents

Description

@mme grains genet @ff-it WILLIAM H. EVANS AND'WILLIAMH. IWAINWRIGIEIT, or INDIANAPOLIS.

INDIANA.

Letters Patent No. 73,961, dated February 4, 1868.

IMPROVEMENT 1N STBAW-GU'TTERS.'

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TO ALL WHOM IT MAY CONCERN:

Be it known that we,'W.- H. EVANS and W. H. WAINWRIGHT, of Indianapolis, in the county of Marion, and State .of Indiana, have invented new and useful Improvements iu Straw-Cutters ;v and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making part of this specication, in which Figure 1 is a perspective view.

Figure 2 isa vertical longitudinal section.

Figure 3 is a side elevatiomwith the fly-wheel removed.

Figure 4, an elevation of the eccentric-shaft.

Figure 5 shows the mode of adjustingthe eccentric.

Figure 6 is a longitudinal section of the eccentric, and

Figure 7 is a side elevation of the combination-boxes.

The same letters are employed in all the figures when indicating the same parts.

' A is the frame of the machine, to which are-bolted the combination-boxes B B1, cast with suitable bearings for the diereut parts of the mechanism; C is a square-edged 'cutting-bar, on which the straw rests, and its edge forms, with the revolving spiral knife E, shcarsby which the straw is cut as it is`fed forward to'meet the knife. This bar is extended through slots in' the combination-bones B B1, and has a slot in each end, through which passes the eccentric adjustingscrew C. This screw has a neck, ttingintoV the slot in the end of the'bar C. This neck is eccentrically'attached to the screw, so that as the head is turned, the neck acts as an eccentric to move the end of the bar C nearer to orfurther from the knife. The lower end'of the screw .is extended through the frame, and is attached by-a nu't, which draws the head down uponthe bar C, and secures it in place.v

Thccombinatiou-boxcs embody the following peculiarities of construction: Curved guards, raised upon the inner faces, shown at B3, to direct the straw properly to the knife; bearings for the knife-shaft; slots for the bar C, and holes in the bottom ange for the eccentric-bolt, and bolts for attaching them to the frame; also astraight margin on the back edge, where they serve as one side of the bearing for the adjustable feed-roller; also a. hub, B4, to which the spur-wheel H is attached. The two boxes are alike, exceptithat only one has the hub for supporting the iiy-wheel. The knife is a spirally-arrangedblade, attached by curved arms to the shaft by set-screws passing through the eyes'. It is driven by a spur-wheel, H, working into a pinion, G, on the end of the knife= shaft. The feeding-rollers, D and D, feed the straw to the knife. The lower Vone revolves in xed bearings in the metallic plate B2. This plate is bolted to the frame immediately behind the combination-boxes B Bil. It is cut away on the upper part of the edge next the boxes B B1 to form a slot in which the shaft ofthe adjustabhe roller D revolves. This roller is pressed against the top of the straw, fed into the box P by springs N, placed on each side of the box, bearing upon the journals of the roller. The ily-wheel F is attached tothe knife-shaft. On the said shaft, inside of the hub of the fly-wheel, is the eccentric, R, which is constructed with a'radial slot, extending from the centre, through which the knife-shaft passes. The bolt R passes through the hb ofthe ily-wheel and the eccentric. The head of the bolt pressing against the eccentric, draws it'against the hub of the fly-wheel, and holds it in place, the degree of eccentricity depending on the position of the shaft in the slot, so thatthe length of the reciprocating motion of the eccentric-rod I, attached by straps to the eccentric in the ordinary manner, may be regulated at will. The ecccntricshaft has aslot, at I, through which passes a pin, serving as a guide, said pin being sustained by a standard, K, attached to the frame. To the eccentric-rod I are attached pawls, L and M, working against the teeth ofthe ratchet-wheels O and O', on the ends of the shafts of the feed-rollers D and D. The paw'l L is pivotcd in the middle, and so weighted on the outer end that its point shall be made to bear upwards against the ratchet-wheel O', while the pawl M bears from above against the ratchet-wheelvO. By this arrangement the rollers are made to revolve in opposite directions, so as to unite in feeding the straw forward. The rollers are cylinders ofwood, covered by metallic plates, punched from the -inner side to form projections on the outer surface to catch the straw.' Q is a hinged cover to enclose the cuttings knife, and prevent accidents.

What We claim as our invention, and desire to secure by Letters Patent, is Y 1. The combination ofthe eccentric-shaft I, pawls L and M, ratchet-Wheels O and O', rollers D and D', and the adjustable eccentric R, constructed and arranged substantially as set forth.

2. The combinationo` the boxes Band B1, and plates B2, constructed as described.

3. In combination with the boxes B BI and Vknife E, we claim the cutting-bar C, adjustably attached by eccentric-bolts, substantially as described. l

In testimony whereof, we have signed our naines to -tlii specification in the presence of two subscribing Witnesses.

WM. H. EVANS, WM'. H. WAINWRIGHT.

Witnesses: RICHARD S. DRULEY, A. B. YoUNG.

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