US112117A - Improvement in feed-cutters - Google Patents

Description

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l Il f N-PETERS. FHOTOUTHOGRAFM WASHINGTON D c mvENToR.

WITNESSES:

NFETERS. PNOT wAsmNsToN D c dini/tat tit HENRY A. BUCK, or FREDONIA, New Yoan.

Letters Patent No. 112,117, dated February 28, 1871.

IMPROVEMENT IN FEED-CUTTERS.

The Schedule referred to in these Letters Patent and making pax-i:` of the same.

I, HENRYv A. BUCK, formerly of Meadville, in the county of Crawford and State of Pennsylvania, but now residing at Fredonia, in the county of Chautauqua and State of New York, have invented certain new and useful Improvements in Feed-Gutters, of which the following is a specification.

My invention relates to that class of feed-cutters, in which intermittent rotating feed-rollers are combined with rotating knives.

`'The object of the first part of my improvement is to render the feed adjustable to vary the length of cut, and also the relative movements of the feedrollers and cutter; and the improvement consists -in mounting on the driving-shaft an elliptical cam having semicircular ends curved in an arc of which the driving-shaft forms the centre. This cam is provided with an elliptical guide-slot in which a pin on a connecting-rod takes and' by which it is driven. This.

rod actnates the feed-rollers. The cam can be turned on its shaft to adjust it relatively to the feed.

The object of the next part of my invention is to enable the feed-rolls to work at a distance apart constantly varying,-in order to accommodate irregularities in the feed without interrupting the proper operation of the rollers, and the improvement consist-s in forming slots on the connecting-rod, in which slots play pins on the vibrating arms which actuate the rollers; the rollers arethus free to approach or recede from each other without interrupting their operation.

My improvement further consists in combining a.

xed knife, a rotary-cutter, and a lifting-plate, which at proper intervals lifts the feed over the knife.

In the accompanying-drawing, which shows all my improvements embodied in one convenient way,

Figure l is a side elevation of my improved machine;

Figure 2 is a similar view of the driving mechanism;

Figure 3 is a plan of the same;

Figure 4 is a side elevation of the cutting apparatus, detached;

Figure 5 is a plan of the same;

Figure 6 is plan ofthe entire machineg'and Figure 7, a front elevation of the same.

Power is imparted to a driving-shaft Dl in the usual way. An arm, H, projects from this shaft. An elliptical cam, G, is also mounted on the shaft D', and provided with an elongated slot, g', to permit .it to be adjusted on the shaft, the slot being of a width slightly exceeding the diameter of the shaft. This adjustment is effected by means of a set screw hf passing through the arm H into the cam and holding it in the position desired.

An elliptical guide-slot, g, having ends curved in an are of which the shaft D' forms the center, is

while the upper one, A, has its bearings in levers fi',

counterbalanced by weights or springs and pivoted to allow this roller to rise and fall in a manneil connnon to feed-cutters, and which need no't, there-tore, be more particularly described here.

Circular ratchets B b are fixed on and turn with their respective axles a. n". Each of tue vibrating arms b' b", above-mentioned, carries a pawl, cc', which takes into its respective ratchet B b. The upper vibrating arm b extends from the centi-e to the circumference of its ratchet B, and carries a pawl, c,

which engages with the ratchet.4 A similar pawl, "i, on`

the lever i', prevents any backward movement oi the ratchet. The length ofthe lower vibrating arm b" slightly exceeds the diameter of its ratchet b, and its pawl c' is pivoted to the lower endof this arm.

A xed'knife, M, is secured to the frame', rendered adjustable, and permitted to yield slightly, to prevent jars' or breakage, in the following manner: The

`knife M is secured to a bed-plate,-m, hy screws or otherwise, and is prevented from springing by stops m m. The bed-plate 'm is secured to the framing F F vby means of screws n n inserted through elongated slots o o in the plate. The bed-plate can be adjusted by this means.- The proper relative adjustment between the knife M and cutter L is effected by set-screws p p' passing through the framing lf F', and bearing on the bed-plate m. This device compensates the wear of the fixed knife. An elastic cushion, 11", is inserted between the bed-plate 'm and framing F F.

A rotating cutter or revolving pressure-wing L is mounted on the driving-shaft D', and works close to the edge of the fixed knife.

A vibrating plate, J, is arranged between the lixed knife and the feed-rolls, being secured to arlnsjj" oscillating on the shaft "of the lower feed-roll. An eccentric, K", on the driving-shaft D', vibrates this plate through a pitman, K.

In operation, the material to be cut is placed in the feed-trough and the driving-shaft D revolved in the proper direction. The rotation of the cani G reciprocates the connecting-rod D, which rocks the vibrating arms b b",- these,by means of their pawls and r ratchets, impart an intermittent rotary motion to the feed-rolls A a, iu the direction shown by the arrows. The feed is thus drawn in between-the rollers et intervals. Should an excess of 'feed separate the rollers the slots and pins lcompensate this movement without -stopping the feed.- Each forward movement of the rolls is followed by a pause, as the connecting-rod remains stationary while the pinf is passing around that portion of the vv.guide-slotg which is concentric with the shaft D; when ,the connecting-rod is retracted the pawls slip 'over their ratchets and the feedrolis remain stationary until the next forward movement of the connecting-rod. A long pause followed by a short feed 'movement is thus secured. By a forward movement of the connecting-rod I mean a. movement in the same direction as the feed. A

Simultaneously with the feed-movement the vibrating-plate J rises and lifts the feed over the edge of the knife, and then drops quickly out of the way as the revolving cutter comes around and shearso the Yn'laterial projecting beyond the' fixed knife.

I am aware that rotary-cutters, fixed-cutters, and

wheels; the vibrating arms oscillating on the axes of tlie-feed- Wheels'; the pins on' the arms working in the slots in the connecting-rod; the pawls. mounted lon the vibrating arms; the ratchet-s on the Ifeed-wheelshafts; and the feed-wheels; all these parts being constructed to operate in combination substantiallyas hereinbefore set forth, to enable the feed-wheels to- 'work at varying distances apart. l

2. The combination `of the driving-shaft, the rotating cutter, the stationary knife, the vibrating liftingplate, and the cam and pitinan which vibrate said Vplate; all these parts; being constructed to operate iu combination substantially as hereinbefore set forth.

Witnesses: y HENRY A. BUCK.

ReNsoM` 10. rWRIGHT,4 y

JOHN. DAVENPQRT.

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