US1380699A - Planer - Google Patents

Description

G. H. BENZON, JR.

PLANE R.

APPLICATION FlLED JUNE l8 I920.

1,380,699, Patented June 7, 1921.

3 SHEETS-SHEET1.

v George H .5522 072, (/r.

/ WJYM e. H. BENZQN, In.

PMNER.

APPLICATION EILED JUNE 18. 1920.

Ehtented June 7, 1921;.

3 SHEETS-SHEET 2.

FIG .4.

IIVVENIOR n A F H e n I To all whom it may concern marten states ear-stir @FFHQE.

GEORGE I-L'BENZON, JR., 0F JENKINTONN, PENNSYLVANIA, ASSTGNOR TO WILLIAM SELLERS & COMPANY, INC., 01 PHILADELPHIA, PENNSYLVANIA, A CORPORA- TION OF PENNSYLVANIA.

reac es.

Be it known that I, GEORGE Jr., a citizen of the United States, residing at Jenkintown, county of Montgomery, and State of Pennsylvania, have invented a new and useful Improvement in Planers, .of which the following is a full, clear, and exact description, referencebeing had to the accompanying drawings, which form a part of this specification.

This invention relates to an improvement in automatic feeding mechanism for the cutting tool of a metal-working machine, and is more particularly designed for use in connection with metal planers in which the bed to which the work is clamped is reciprocated below the tool.

The object of my invention is to provide electrically at the end of each movement of.

the table. The electric means comprises a solenoid which when energized will move the 'escapement lever in one direction and when deenergized will permit theescapement to be moved in a reverse direction bymechanical means, the arrangement being such that the circuit to the coil of the solenoid is closed during. one stroke of the-table and is broken duringthe other stroke. I also provide a second magnet or solenoid for preventing the escapement lever from returning by gravity if the circuit to the above mentioned solenoid is broken.

The nature of my invention will be best understood by reference to the accompanying drawings, which will now be described, it being premised, however, that various changes may be made in the details of construction and the general arrangement of the parts, without departing from the spirit and scope of my invention as defined in the appended claims.

F gure l of the drawings is a side elevas H. BENzoN,

PLANER.

' Specification of Letters Patent. Patented June 7, 1921.

- Application filed June 18, 1920. Serial No. 389,812.

tion of a portion of a planer with a portion broken away for clearness. i

Fig.2 is a diagram of an electrical controlling device embodying my invention. I

'Fig. .8 is a horizontal sectional view of the planer showing the table drive.

' Fig.4: is a cross-sectional view of Fig. 3. V .Fig. 5 1s a cross-sectional'view of the feed" mechanism clutch and driving pulley.

Fig. 6 is an endview of the clutch shown v i V in Fig. 5. v

Fig. 7 is a sectional view on the line 7-7 of Fig. 5.

Fig. 8 1s a detail view of the locking mechi anismon a larger scale.

In the drawings the reference character a designates the bed of the planer on which the table 7) is adapted to reciprocate, and secured to the table is a rack 0 which meshes with a gear (Z;

The gear d meshes with a pinion on a gear it connected to a shaft 6, and f, f are1fast pulleys secured to the shaft 6, said pulleys being on opposite sides of a pair of loose pulleys g, g. j is a driving pulley which may be driven from any suitable source of power and which is connected to the various pulleys f, f, g, g by means of a pair of belts i, one of whlch is crossed, and are arranged to actuate the train of gears before described, for

reciprocating the bed. Slidably mounted in suitable brackets on the frame of the machine is a belt shifter 70, which is arranged,

to shift the belts 2', to place both of said belts on the loose pulleys g, or one of said belts on a loose pulley and the other on a fast pulley suitable bearings in projections on the frame a is a vertical shaft 19' and connected to the inthe well known manner. -Mounted in I crank 0 which is at right angles to the crank g, and connected to this crank o'is a shifting rod 11, the other end of which is connected to a lever m pivoted on the bed a. The upper end of this lever 97?. is provided withtwo projections out of vertical alinement with each other and which are arranged to be engaged by adjustable dogs Z, Z connected to the table 22.

Pivotally connected to the bed a adjacent to the lever m is a hand lever 1', which is necte y eans of a link -5 with the er,

m, and is adapted for shifting the mechanism by hand when it is desired to stop the machine or reverse its motion between the limits of the movement of the table 5.

u is the cutting tool which is connected to the tool head 42 in any desired manner, which is movably mounted on the cross rail 00, and along which it is adapted to be moved. to shift the tool between cuts.

The cross rail m is adjustably mounted on suitable guides on the housing 3 and is arranged to be adjusted thereon for shifting the cross rail together with the tool head vertically with relation to the work piece to be machined on'the bed I). The tool head 41 is arranged to be adjusted or fed longitudi nally along the cross rail The screw shaft or feed screw in action is actuated between cuts by ratcheting mechanism carried by the gear wheel w on the end thereof and which mechanism is clearly disclosedv in my Patent No. 911,566. The desired feeding pinion w is continuously in mesh with the teeth on a sector 2, which is journaled on a stud shaft connected to the cross rail :0. 3 is a crank connected to the sector 2 and which s is also connected by means of a link 9 to a. disk 7, the connections between the link 9 and the disk 7 being arrangedto permit radial adjustment in order to vary the throw of the lever 3 and consequently vary the feed of the tool. The disk 7 is also connected to a shaft mounted in a bearing on a bracket extending from the cross rail, and connected to this stud shaft is a bevel gear which is in mesh with a second bevel gear 6, splined on a shaft 5. The bevel gear 6 is also carried by the cross rail at, so that when the cross rail is adjusted vertically, the before described mechanism is moved vertically on the shaft 5. This shaft is rotatably mounted in suitable bearings on the housing 3 and is arranged to be driven by bevel gears 10 from a shaft 11, which is also journaled in bearings on the housing 3 Rotatably mounted on the shaft 11 is a pulley 12 which is continuously driven from any suitable source and which is recessed for the reception of clutching mechanism as clearly shown in Fig. 5. Connected to the shaft 11 is a clutch member 13, the end of which eX- tends into a. recessed portion of the pulley 12, and is provided with cam surfaces 32 as clearly shown in Fig. 7. Rotatably mounted on the member 13 is a sleeve 15 which is providedwith four projections 8 which extend into the recessed portion of the pulley 12, and 16 are rollers between the projections 8 and which are arranged to lock the pulley 12 to the member 13 when the rollers are moved along the cam surfaces on the end on the member 13. 14 are springs one end of each of which is connected to the sleeve 15, while the other ends thereof are con nected to pins 17 extending outwardly from 'pivoted at 23.

the clutch member 13 and which pins ex- -tend through openings 18 in the sleeve 15.

These springs tend to draw the roller 16 on the high portions of the cam when released by the escapementlever to lock the pulley 12 to the clutch member 13. 19 are projections on the periphery of the sleeve 15 and which projections are out of alinement with each other, for the purpose hereinafter described. Mounted in any desiredmanner on the housing y on a pivot pin parallel with the shaft 11 is an escapement lever 20 having three arms, one of said arms being in the line of travel of one of'the projections 19, while another of said arms is in line of travel of the other projection 19, as clearly 20 is pivotally connected to the end of the core of a solenoid 21, the lower end of which core is pivotally connected to a lever 22 24: is a projection 011 the lower face of the lever 22 which is adapted to rest on a roller 25 on the upper end of a lever 26 pivoted at 27, and connected to this lever 26 is the core of a solenoid 28. 29 is a source of energy which is in circuit with the solenoids 21 and 28 and a main switch under the control of a switch arm t, and 31 is a hand switch in the circuit of the solenoid 28. One end of the switchlevert is also connected to the end of links's so that when either the hand lever r or lever m is shifted the switch will be thrown as hereinafter de-' stance, to the right, which will close the circuit through thesolenoid 21 and the mechanism is so timed and connected that the table will move to the right and at which time it will complete what might be termed the cutting movement. As soon as the dog Z engages the lever m, the belts will be shifted to reverse the movement of the bed, and

at the same time the switch twill be thrown to the right which will break the circuit to the solenoid 21 and close the circuit to the solenoid 28. This energizing of the solenoid 28 will withdraw the lever 26 from under the projection 241 and permit the core of the I solenoid 21 to drop by gravity. This dropping by gravity of the core of the solenoid 21 will throw the hooked arm of the lever 20 into contact with the periphery of the sleeve 15 and withdraw the other lever from under the first projection 19. This move ment of the escape-ment lever will permit the springs 14 to become active and shift the rollers 16 to lock the pulley 12 to the clutch member 13 so that the shaft 11 will be rotated 180 degrees until the second projection 19 is engaged by thehooked member on the escapement lever 20, which will-arrest the movement of the clutch member :15 and at which time theproj ections 8 will shift the rollers .16-to-di=sengage the clutch- :This

movement of the shaft 11 through the medium ofgearslO and 6; will rotate the disk- 7 approximately 180 degrees and which will in turn through the action of the sector 2 actuate the pinion w to move the ratchet mechanism into a position to shift the tool at the next movement. The planer bed is now returned to move the work piece idly under the tool a, and at the end of this movement the dog Z will again shift the leverm, which will again reverse the belts and shift the lever t which will first break the circuit to the solenoid 28 and close the circuit to the solenoid 21. This energizing of the solenoid 21 will shift the escapement 20 to the position shown in Fig. 2 which will again permit the shaft 11 to be rotated 180 degrees, and immediately after the lever 22 is raised by the core of the solenoid 21 the lever 26 will drop into the position shown in Fig. 2 to prevent the lever 22 and the core of the solenoid 21 from dropping if the circuit to the solenoid 21 is broken before the table reaches the limit of its next movement which might occur if the operator should stop the machine during a cut, as he would then break the circuit to the solenoid 21.

If the lock or latch were not provided, the feeding mechanism would be shifted as soon as the circuit to the solenoid 21 was broken, which would throw the feeding mechanism out of timed relation.

If it is desired to cut out the automatic feed for any reason, it is only necessary to open switch 31, to break .the circuit to solenoid 28, and lock the escapement, and

when the switch is again closed the automatic feed will be restored in proper relation to the table reciprocating mechanism.

The advantages of my invention result from the provision of an intermittently actuated tool feeding device in connection with an electrically actuated escapement to prevent the escapement from acting until after the table has been moved to a predetermined point, to prevent the tool' feeding mechanism from getting out of timed relation with the table reciprocating mechanism.

Having now fully described my invention, what I claim and desire to protect by Letters Patent is 1. 'A metal working machine comprising means for reciprocating the cutting tool and the piece to be cut relative to each other, means for reversing the motion at the end of each stroke, electrically controlled feeding mechanism for shifting the cutting tool at the end of each complete reciprocation, and means for preventin the electrically controlled feeding mechamsm from getting means.

outof timed-relation with the reciprocating 2; A :metalcutting 'machine 2 comprising means forrreciprocating. the cutting tool and therpiece' to' be out. relative to each other, means for-reversing the; motion at the end offeachstroke,intermittently actuated feed-. ing mechanism for, shifting the cutting "tool just prior to the beginning of each cut, and an electrically controlled device for preventing the feeding means from getting out of timed relation with the reciprocating means. 3. In a device of the character described, an intermittently actuated tool feeding mechanism, an escapement adapted to permit actuation of said feeding mechanism, and electrically operated means adapted to control the escapement.

4. .In a device of the character described, an intermittently actuated feeding mechanism, an escapement, a lever therefor, electrical means for moving the escapement lever in one direction, means permitting the lever to move in the other direction, and an electrically actuated lock for the escapement.

5. A metal planer having a reciprocating table, means for reciprocating said table including reversing mechanism, intermittently actuated tool feeding mechanism, anescapement for controlling the feeding mechanism, an escapement lever, a solenoid for actuating the escapement lever in one direction,

said escapement lever being arranged to be moved in the other direction by gravity, an electrically controlled lock for preventing the movement of the escapement under the force of gravity, and electrical switches controlled by the reversing mechanism for actuating the solenoid and the electrically controlled lock.

6. A planer having a moving table, means for reciprocating. said table including reversing mechanism, a cutting tool, intermittently actuated mechanism for moving said tool at the beginning of each cutting stroke, anescapement for controlling the intermittently actuated mechanism, an escapement lever, a solenoid for actuating said escapement lever in one direction said escapement lever being arranged to be moved in the other direction by gravity, 3. switch for controlling the current to said solenoid, a lock for preventing the escapement lever from moving under the force of gravity, a solenoid for shifting said look, a second switch for closing the circuit through the lock solenoid, and means controlled by the reversing mechanism for actuating said switches.

7. A planer having a moving table, means for reciprocating said table includingreversing mechanism, a cutting tool, intermittently actuated mechanism for moving, said tool at the beginning of each cutting stroke, an escapement for controlling the intermittently actuated mechanism, an escapement lever, a

solenoid for actuating said escapement lever through the lock, solenoid, means controlled in one direction, said escapement lever being by the reversing mechanism for actuating 10 arranged to be moved in 'the other direction said switches, and a third switch for controlby gravity, a switch for controlling the curling the circuit to the lock solenoid. rent to said solenoid, a lock for preventing In testimony of which invention, 1 have .the escapement lever from moving under the hereunto set'my hand, at Philadelphia, Pa.,

force of gravity, a solenoid for shifting said on this 16th day of June, 1920.: 1ock,a second switch for closing the circuit r GEO. H. BENZOMJRQ

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