US378106A - Friction feed mechanism for iron-planers - Google Patents

Description

(No, Model.) 2 Sheets'-She et 1.

v "IQ-PHILLIPS, v PRIGTION' B-ED MECHANISM FOR IRON'PLANERS. No. 378,106. Patented Feb.21,'1888.

n PETERS. mot-mum, wnmmm. ac.

(No Model.) 2 'SheetsSheet 2.

P. PHILLIPS.- \FRIGTION'PEBD MECHANISM PORIRON PLANERS. No. 378,106. Patented Feb. 21, 1888'.

1 I I I N. PETERS, mmmm wr. Washington. In;

siren STATES AT'ENT FFIGEQ FRANKLIN PHILLIPS, OF NEWARK, NEW JERSEY.

FRICTION FEED MECHANISM FOR I RON-PLANERS.

SPECIFICATION forming part of Letters Patent N 0. 378,106, dated February 21, 1888.

Application filed July 6, 1881. Serial No.243A93. (No model.)

To aZZ whom it may concern.-

' the tool meanwhile operating upon the mate rial which is attached to the reciprocating- Be it known that I,- FRANKLIN PHILLIPS, a citizen of the United States, residing at N ewark, Essex county, New Jersey, have invented certain new and useful Improvements in Friction Feed Mechanism for Iron-Planers, which are fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

The object of this improvement is to operate the tool-feeding mechanism of a reciprocating planer by a frictional connection with the reversible pinion-shaft used to actuate the planertable; and the invention consists in the combination, with a friction-drum driven by the pinion-shaft, of a feed-shifting device operated by a strap pressed upon such drum and re leased when the feed movement is effected. The intermittent tension of the strap is effected by a lever which has its end operated in contact with a segment concentric with the friction-drum, the end sections of the segment being movable and being shifted by thereversing mechanism of the planer. The frictional connection of the feeding mechanism with the reversible pinion-shaft is maintained only during the period required to actuate the feed, and is then wholly released, so as to arrest the parts in frictional contact and to remove the frictional resistance to the motive power.

The too1-feeding mechanism upon a planer consists commonly in a screw mounted in a cross-head and fitted to a nut upon a sliding carriage which sustains the tool. The rotation of the screw thus propels the carriage and tool at the desired rate along the cross-head,

planer-table. The rotation of the screw is effected during the reverse movement of the table,and is commonly produced by a ratchetwhcel and pawl, the pawl being carried by an oscillating arm hinged upon the screw or upon a stud adjacent thereto and vibrated by some sort of connection with the belt-shifting mechanism of the planer.

The reversible table is not shown herein nor a the feeding devices, as they are already well known; and my invention is applicable to any machine having a shaft rotated alternately in opposite directions, as the pinion shaft of a planer-table, and having a mechantional attachment-s with a small part of the planer-bed and the base of the stanchion S,

which would project upward from the same to carry the cross-head for the cutting-tools. Fig. 2 is a plan of the same parts. Fig. Sis a vertical section of the same on.line w a: in Fig. 1. Fig. dis a plan of part of a planerbed with the parts related directly to my improvement, the novel frictional devices being shown upon the nearer side of the bed with the segment and its movable sections omitted. Fig.5 is a view of the sector and stops detached from the connected parts.

- A is the planer-bed, and B the reversible pinion-shaft carrying pinion B, which would be rotated alternately in opposite directions to traverse the table back and forth upon the bed, as desired.

The table is not shown in the drawings; but

the master-wheel A,which would operate upon the table-rack, and the gears A which transmit the movement of the pinion B to such master-wheel, are shown.

The pinionshaft is shown connected with bevel gearsG O, and the shaft D of the gear 0 would be rotated alternately in opposite directions by suitable pulleys and belts, and whether such means were used or otherwise the planer would, in any case, require a beltshifter or other reversible agent to reverse the driving mechanism at each end of the cuttingstroke.

To reverse my frictional feed mechanism at each end of the cutting-stroke, I connect a rod (indicated at ain Fig. 4) with someoscillat ing or reciprocating part of such belt-shifter, and connect the same with a crank, a, affixed to a shaft, b, to oscillate the shaft at each end of the cutting-stroke.

The oscillating shaft D1 in my construction is not used directly, as 1111 some other constructions, to oscillate a pawl'to rotate the feeding screw; but such oscillations of the pawl are effected by a separate arm actuated by frict-ional contactwithfa drum or wheel propelled by the train of gearing which rotates'in 0ppo-- site directions to reciprocate the planer-table.

0 is a pinion upon the end of the reversible shaft B, and c a wheel rotated thereby and propelling a friction drum or wheel, 0, which thus turns backward and forward continuously with the shaft B when thelatter operates. The drum and wheel 0 are mounted upon the hub of a toothed sector,f, fitted movably upon a stationary stud, d, and having an arm, 9, to carry a fulcrum, d, for a lever, h, for tightening a friction-strap, i, upon the periphery of the drum.

The lever h is provided with two arms, at n, to which are attached the ends h h of the strap 'i, one of such ends being connected with the arm n by a tighteningbolt, l. A roller, h, in the end of the lever h, is fitted to the inner side ofa segment, on, which is concentric with the stud d, and is provided at opposite ends with hinged sections 0 0, which are themselves provided with armspp, to be shifted by a connection with a lever, b, actuated by a cam, r r, upon the end of the oscillating shaft 1). The arms 11 are connected by a link, f, and the arm 1) with the crank b by a connection, q, and the oscillation of the shaft 1), which is effected by the movement of the shifter-rod a when the motion of the pinion B is reversed, thus serves to alternately throw the sections 0 0 into the arc of the segment on. The strap is so adjusted by the bolt Z that when the roller h. is in contact with the arc of the segment the pressure of the strap upon the drum 0 looks the sectorf to the drum, and the sector then turns with the drum upon the stud and operates to actuate the feed mechanism as desired.

The feed mechanism shown herein is a shaft, 8, provided at one end with a feed-disk, r, and at the opposite end with a toothed wheel, f, meshing with the sectorf. The feed-disk is shown with a groove, t, having a crank-pin, 1, adjustable therein to and from the center of the disk to vary the stroke of the feed-rod a, which would be connected with the feedingpawl of the planer-tools in the usual manner.

In Fig. 1 the shaft B and pinion c are shown rotating in the direction of the arrow or, thus turning the wheel 0 and the drum e toward the right, as shown by arrow m The roller. h is shown in contact with the segment at and -moving toward the section 0, as indicated by the arrow 00, and the sector f is thus rotating the wheel f in the direction of the arrow 00 and carrying the feed crank-pin t (which is indicated only in dotted lines in Fig. 1) to a position vertically beneath the shaft 8, by which it is turned. The section 0 is shown concentric with the arc of the segment m,- but the section 0 is retracted from the are, as shown by dotted lines z in Fig. 1, so that the pressure upon the roller h, which tightens the strap t,

would cease when the roller reaches the section 0, The pressure upon the roller being thus relieved, the strap 2' would release its grip upon the drum, and the latter would thereafter revolve without further actuating the feed or experiencing any resistance from the friction devices. Such condition of the parts would quired position when moved thereto.

remain until the movement of the shifting mechanism to reverse the rotation of the pinion d,when the connection q would be moved in the direction of the arrow af and throw the section 0 into the linez concentric with the drum, thus pressing the roller h in the manner required to tighten the strap upon the drum. The reversal of the shaft B would simultaneously cause all the parts shown in Fig. 1 to rotate in the contrary direction, and the roller h would then be carried along the are of the segment until it reached the section 0, which would have been thrown outward when the section 0 was turned inward, and the press ure upon the roller would then cease and the rotation of the sector f be arrested.

The length of the arc and the proportions of the sectorf and cog-wheel f may be made, as shown herein, to rotate the feed-shaft 8 just one-half a revolution, thus causing the feedrod to to operate as a toggle to lock the feeding mechanism at each end of its stroke.

It is obviously immaterial whether the lever h be pressed against the inner or outer side of the segment m, as the strap could be readily constructed and adjusted to tighten under such pressure,whether it operated to throw the end of the lever h outward or inward. I do not therefore limit myself strictly to the use of a concave segment or to the use of a roller upon the end of the lever h. It is also immate rial how the movable sections 0 0' be thrown in and out of the segmental are, as their essen-' tial function is merely to press upon the lever h when the shifting mechanism reverses to tighten the strap, and such function may be performed by constructions different from that which I have shown. It is also immaterial how the motion imparted to the strap by the drum be transmitted to the proper feeding devices, and it is obvious that the toothed sector fand wheel f may be replaced by other connections of a different character, if desired, without departing from the essential feature of my invention, which is the release of the feeding devices from the drum by means actuated from the belt-shifter or its equivalent in an iron-planing machine.

The lever 12 is shown pivoted upon a stud adjacent to the end of the shaft b and actuated by a cam upon the shaft, so that the sections 0 0 may beheld positively in their re- In the specification of my caveat describing the same invention and filed May 18, 1887,1haveshown the connection q actuated by a crank atfixed directly to the shaft b; but it is obvious that in such construction any pressure upon the sections 0 0 would be liable to move the beltshifting devices.

In my present construction, as shown in Fig..

1, the end of the shaft is provided with acam having two concentric faces, 1' r, of different radius, and the lever b is provided with toes t t, fitted to such faces and pressed alternately in opposite directions thereby when the cam is oscillated back and forth with the shaft 1). The section 0 isheld rigidly in the arc of the segment m when the cam-face r is turned toward the toe t, as shown in the drawings, and when the cam is rotated, as shown by the arrow 1), the same cam-face would press against the toe t and, operate, after shifting the same, to lock it positively in such shifted position.

It is immaterial whether the strap be pressed upon the external periphery of the drum, as an equivalent clutching device may be constructed by applying the strap in otherwaysas, for instance, to the internal periphery of the drum. Such an arrangement'would be readily effected without materially altering the other constructive features, as the drum may be made large enough to include the arms a and n of the lever h internally, and such arms would operate to expand a strap'as readily as to contract one, in the manner shown herein.

In any case the strap would .be pressed against the drum and would be rotated thereby with equal effect. any of the parts connected with the oscillating sector f, to limit its oscillations in the desired manner, and Fig. 5 shows a lug, a,- projected from the hub of the sector, with stops u arranged to arrest its movement at an angle of forty-fivedegrees each wayfrom its central position. The stops are omitted in Figs. 1 and 2, to avoid obscuring the other features of the drawings, but are shown in Figs.

, 3 and 4 affixed to the seat upon which the friction devices are mounted. In Fig. 5 the sector and the stops are shown wholly detached from the other parts to exhibit their angular relation. The arm 9 is arranged to move in front of the stop u, and the lug u is projected laterally from the plane of such arm to engage with the stops, and the lug and stops are faced with leather to soften their concus- The realfunction of the stops is to arrest the movement of the strap when released from the friction-drum, and any other means may be employed which will effect this object.

It is obvious that the friction-strap when actuated by thedrum may transmit the required reversible motion to the feed crank-pin t or its equivalent by other means than those shown herein.

The object of employing the gear-toothed sector f and wheel f is tosecure a greater angular movement for the feed crank-pin than is transmitted to the strap by the drum, so that the segment at and its attachments may be made with a short arc; but it is plain that the feed may be actuated by a more direct connection to the part, as the arm g, which is oscillated by the lever-fulcrum d, and the toothed gearing be thus dispensed with. The fulcrum d is in the illustrationcarried about the axis of the drum by an arm 9; but it, is obvious that a disk could be made to perform both the functions of the arm g and sector f,as it is common to cut gear-teeth upon the edge of a disk,

Stops may be applied to or a crank-pin in the face-of a disk.

The essential part of my 'inventioniis the actuation of the tool-feeding mechanism by the oscillating movement of the lever-fulcrum,and

it is therefore immaterial how the fulcrum be sustained and carried about the axis of the drum or how the movement be transmitted from such lever-fulcrum or its oscillating carrier to the tool-feeding mechanism, shown herein by the feed crank-pin t. g

Having thus set forth my invention, what I claim herein is 1. The combination, with the reversible drivingshaft of a planer, of a friction-drum rotated therewith,a strap encircling the drum, alever to tighten the strap, a fulcrum-bearing pivoted upon theaxis of thedrum to carry the said lever,a segment-with movable end sections operated alternately by the planer shifting mechanism, and tool-feeding mechanism, as

the feed crank-pin t, actuated by the osoillations of the lever-fulcrum, substantially as herein set forth.

2; The combination, with the reversible driving-shaft of a planer, of a friction-drum rotated therewith, a concave segment con;

centric with the drum, a toothed sector and arm movable concentric with the drum,a lever pivoted upon the arm and carrying a roller in N contact with the segment, a drum-strap connected with such lever and tightened by pressure upon the roller,hinged sections applied to the ends of the segment and operated alternately bythe planer-shifting mechanism, and a toothed wheel meshing With the sector.

'of the segment, arms 10 10, attached. tosuch oscillated by the planer-shiftingmechanism, the crank b and connection q for actuating I 5 sections and connectedby link p, the shaft b,

the sections 0 0', and a toothed wheelmeshing with the sector f and operatingthe'feeding mechanism forthe planer-tools, substantially as herein set forth.

4. The combination, with the reversible driv ing-shaft of a planer, of a friction-drum rotated therewith, a concave segment concentric with the-drum, a toothed sector and. arm movable concentric withthe drum,aleverpivoted upon the arm and carrying a roller in contact with a the segment-,a drumestrap connected with such of the segment, arms p p, attached to such sections and connected by link 10, the shaft b,

oscillated by the planer shiftingmechanism,

the crank b and connection (1 for actuating the sections 0 0, and the shaft .9, provided at one end with the toothed wheel f, meshing with the toothed sector, and at the opposite end with the feed crank-pin t, adjustable to and from the shaft .9, and provided with the feedrod u for actuating the feeding mechanism of the planer-tools, substantially as herein set forth.

5. The combinati on, with the reversible dri ving-shaft of a planer, of a friction-drum rotated therewith, a strap pressed upon such drum by a lever and segment, movable sections applied to the ends of such segment, a cam oscillated by the planer-shifting mechanism, and means actuated by the cam for throwing the movable sections alternately into the are of the segment, as and for the purpose set forth.

6. The combination, with the reversible driving-shaft ofa planer, ofa friction-drum rotated therewith, a strap pressed against such drum by a lever and segment, movable sections applied to the ends of such segment and operated forth.

In testimony whereofI have hereunto set my hand in the presence of two subscribing witnesses.

FRANKLIN PHILLIPS.

Vitnesses:

Gno. H. PHILLIPS, THos. S. CRANE.

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