US103080A - John richards - Google Patents

Description

I Nillimitati gatita" 4JOHN RICHARDS, or i1 HILADHLPHIA, PENNSYLVANIA, AlssIeoR-To J. A.

FAY e oo., or cINoINNATLoHIuj i Letterslatent No. 103,080, dated May 17,1870.

IMPRoveMnNT' In PLANINe-MCHINB'S.

The Schedule referred to in these Letters Patent and unal g par! o( me cam-e. l 'A l I, J OHN RICHARDS, f the city and county of Phil adelphia and' State of Pennsylvania, have invented certain Improvemntsin Planing-Machines for planing wood, ofwhieh thc following is a specification.

Naturcand Oly'ects `of the Invention.

This invention relates- A First, to a device' fordriving, stopping, and starting the feeding mechanism of wood-planing machines by means of t a friction-clutch connected with `the gearing of he feed-rolls and Ltile drivingfshaft ofthe machine; an i i Secondlyg'to aniimproied method of supporting and adjusting thetop or yielding feed-roll of such machines, in such a mannerthat'the bearings of the'shafts will yield and allow the roll to adapt its position to the irregularities of the lumber` as it passes between the rolls, and so that the rolls maybe readily adjusted to suit the lumber of vvarious depths, as hereinafter more j fully explained; and.

Thirdly, in connecting the weighting-levers direct-ly l --with the adjusting-screws that regulate 'the position hereinafter described.

The objectsof the improvement first named will be explained by saying that, in planing-machines of this kind, where rolls areempioye'd to feed the lumber through the machine, the motion'of the feeding-rolls is slow, and great force is required to overcome the resistance of the pressure-guards; and it is common of the top rolls by means of a'link and swivel-joint, as

to connect the `rolls with the driving or other shaft of the machine by a train of gearing properly arranged and proportionedto` giv'e the -proper speed and force to the rolls, as will be readily understood by those skilled i'n the making of such machines.v

The first mover n this train of gearing is usually l driven bya belt, and the feed-motion engaged and disengaged by a positive clutch. The motion of this Iirst mover being rapid, there is constant danger of breakingthe teeth ofthe wheels, and injuring and wearing the parts by concnssion.

One object of this invention is to avoid these' objections .by starting the rolls gradually with'a frictional clutch, the'aetonof which is well understood as being free from the objeetions cited.`

` This 'friction-clutch, while its force is sufficient to drive the vgearing and rolls, will yield if any accident.

happens'tothemachinery, or the lumber meets with any obstruction in `its passage through the machine, and allow the rollsl to stopwithout straining or breaking the parts.

The second part of tllsinvention, relating to the 1 manner of supporting end adjusting the top or yielding feedrll 0f plllllgmachines, has for its object th e `free 'pivoting ofthe bearings in the line of' the axis of the roll, and in so arranging the several parts that they can be easily; fitted by planing,fas illust-rated in the drawings. Y

- Defect 1 1 1 Figure l is a perspective 'elevation of lthefframe of a wood-planing machine, with a pail",` otfzfeeding-rollsf and other partsembodying my improvements. 4

'y' y are standards for supporting the carriers b b andy-L top rolle.

l is the compressing weight.

la h are levers, and v ,w w links connecting the levers with the adjustingscrews g g. Y

n n are the .bearings of shaft m. v

r is a disk-or flange fastened to and revolves with shaft m. f

o is a washer of leather, wood, or other suitable material, interposed between tiled-ange 'r and pulley t', on which the feed-belt runs.

The bearing a' is movable, and is pressed against the pulley i by means of the lever i: and mechanism, as shown. Y

The pulley i is, in turn, pressed against the washer o and the iiange r, and setin motion by the frictional contact of washer o.

By reversingthe lever v the pulley is released from its contact with washer o, and, having nothing to drive it but the lubricated bearing on shaft m, stops the feed.

It will be understood that the pulleyi may be made with several faces, having different diameters, to regnlate the feed 0i' the machines; also, that diderent modifieations of mechanism for moving the bearing n may be employed without changing the nature of this invention; also, that the faces of the frictional clutch I need not be radial from the shaft, but arranged in any ofthe known forms'for such devices, and secure the effects, as herein described.v

I am aware that similar results as to gradually starting the feed may be attained by a shifting heltt-ha't is moved from a loose toa tight pulley; also, that a tight ening-pulley, 'to regulate the tension of the beltymay E be used to operate much the same; but, in neither case can a set of cones or graduating pulleys be employed at this place to regulate the rate of the feed.

To raise or lower the roll c the screws g gare turned by means ot' the wheel 7i, or other mechanism. The carriers b b are moved up and down upon the standards y y. It' one end of the roll only is moved', o1' the two ends are moved unequal distances, the hearings d d yield to accommodate such movement, by means of the circular flanges which are fitted loosely under the gib pieces wat, to admit of a'limited rotation of the bearings d.

The weight l and level' k'are connected with the carriers b by means ofthe links w w and screws g g, and are not raised or lowered in adjusting the roll c. When the roll c is raised by the lumber, the screws slide loosely through their bearings in the piece z, and lever k with link w are raised with it, as will be understood.

Having thus described myinvention,

I do not claim the use of a friction-clutch for stopping and starting the feeding mechanism of woodplaning machines; but do claim as my invention and desire to'seoure by Letters Patent- 1. The radial friction-plates 'r fi, with the frictionwasher o, constructed as described, in combination with the movable bearing a'.

2. The sliding carriers b b', when provided with adjustable bearings d d, constructed as shown, for the purposes specified.

3. Connecting the levers k k directly to the adjusting-screws g g by means of links w w with' a swiveljoint, substantially in the manner and for the purposes herein specified.

JOHN RICHARDS.

Witnesses:

OnAs. COLLIER,

GEO. GEBBIE.

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