US821932A - Metal-planning machine. - Google Patents

Description

No. 821,932. PATENTED MAY 29, 1906.

H. E. & P. L. EBERHARDT.

METAL PLANING MACHINE.

APPLIOATION FILED JUNE 3,1903.

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g PATBNTED MAY 29, 1906. H. E. & F. L. EBERHARDT.

METAL PLANING MACHINE.

APPLICATION FILED .TUNE 3. 1903.

PATENTED MAY 29, 1906. H. E. & P. L. EBERHARDT. I METAL PLNING MACHINE.

APPLICATION FILED JUNE 3,4 1903.

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HENRY E. EBERHARDT AND FRED L. EBERRARDT, oE NEWARK, NEW JERSEY, AssieNoRS-To eoULD a EBERHARDT, or NEWARK, NEW JERSEY, A ooRPoRATIoNoE NEW JERSEY.

METAL-PLANING MACHINE.

j No. S21-,932. i A

Y Specification of Letters Patent.

ratenteu May 29,1906.

To (if/ZZ whom it may concern:

Be it known that we, HENRY E; EBER- HARDT, residing at 113 Orchard street, and FRED LjEBERHARDT, residing at 17 Hillside avenue, Newark, county of Esserg'State of New Jersey, both citizens of the United States, have inventedcertain new and useful Improvements in Metal-Planing Machines, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

`The present improvements relate to that class of metal-planing machines, commonly called Shapers, in which the work-piece is held stationary and the tool is moved over the same by a reciprocating ram.

. The invention consists partly in an imarm which intermittently operates the feedscrew in the lcross-head of the machine,

partly in a special arrangement of mechanism to drive the pitman crank-pin at. Itwo different rates of speed, and partly to a particular construction ofthe frame of the .Shaper and thecombination therewith of an' in section. Fig. 4 isa rear elevation. Fig.

is a vertical section on line 2 5 in Fig. 1,

Fig. 6 is a side view of the oscillating feed-l arm; Fig. 7, a section on line 7 7 in Fig. 6;'

Fig. 8, a front view ofthe feed-arm and the gearing connections which oscillate the same. Fig. 9is a section of the pinion-shiitingiappliances, and Fig. 10 is a side elevationo'fa portion of' the frame which supportsthe pinion-shifting appliances.

which the pitman B is vibrated to reciprocate the ram C longitudinally.-

Thecrosshead D isshown upon the iront of the frame, as usual, for carrying the worktable and having a feed-screw F with gears f f and a rocker-lever g upon the end ofthe Cross-head for turning such {eed-screw.`

A bearing G is formed upon the plate A of the frame, and two crank-gears H H are shown mounted by a journal I in such bearing, the gear H carrying the crank-pin J,V which is fitted in the usual manner to a slot in the pitman B to vibrate the same as the crank-gears are rotated.

The gear H next the plate is smaller than the gear H, and a stud K is supported by the 'frame adjacent to such gears, carrying two pinions L L, adapted to mesh, respectively, with the crank-gears H H and journaled upon the stud to move transversely when Aregquired, so that either of the pinions may be .engaged with one of said gears, the pinions being so connected by a sleeve that the pin- :ion L clears the 'rim oi the gear H when the proved construction for the vibratingfeedi tended through the irame and provided with jaws Z to embrace the rim of the larger pinion L', and the outer end oi' such rod is con-` ;nected with a lever V, which is pivoted upon the outside of the frame-plate A. Thehandle oisuch lever may be moved 4to and from the plate and shifts the rod and pinions when vthus moved, and although they are not shown upon the drawings the rod is provided in practice with stops to locate each pinion as required in line with the corresponding crankgear H' H. The pinions when in operation rotate at the same speed, and thus rotate the crankpin atdiHerent speeds. I

he gearH lies close to the plate A oi' the Jframe, and in orderto retract the pinion L endwise Jfrom the gear H a recess L2 is formed inthe plate adjacent to such `inion. The recess is also made toreceive a oubleface gear-wheel M, which is located partly in said recess land meshed with the pinion L and has a face of suitable breadth to engage the same in both positions of the said pinion. The Shaper is shown ln the drawings with a box-frame having ilatsides A between A driving-shaft N carries the driving gearwheelM and is extendedoutside of the frameplate- A and rovided with a` clutch gearwheel C), whic is connected with-the shaftN IOO at pleasure by. a clutch P. `Ithas preferably .l

a hand-wheel S2', which is omitted from Fig. l to show the clutch-sleeve and its :fork LVP `The clutch gear-wheel O is inclosed for pro- Q is ivoted'upon such guard-case by a journal and is extended forward by the side of the crank-planer frame toward the cross-head or work-table, so as to be conveniently reached by the operator when watching the work of the tool. VThe clutch-lever carries a fork P to shift the clutch P.

An electric motor R is attached to the rear of the crank-planer frame and has its spindle S provided'with a pinion S', which rotates within the guard-case O and meshes with the clutch gear-wheel O.

As already described, the frame is of boX form with at sides A andA, and the rear end of the frame is also made flat and the electric motor attached to such flat surface between the lines of the two sides, so as not to project beyond the lines of their surfaces. The motor-spindle S and the driving-shaft N are both projected beyond the line of the frame A to receive the gear-wheels S and O and these gears thus lie close to the frameplate A, so that the guard-case O is readily f attached thereto.

-By attaching the electric motor in or at the rearof the Shaper-frame it does not obstruct access to the side of the frame where the feed mechanism is located and where the operator stands to vary the adjustment of the pitmancrank and the connection of the pitman with the ram. Such location is also an advantageous one, because the driving-shaft for the crank-gear is commonly in Shapers located close to the rear part of the' frame and is thus readily connected with the spindle `ofA ously and the clutch employed to stop and start the ram at frequent intervals, as may be required for the operation of the tool. Such stopping and starting of the tool is instantly effected by the connecting and disv connecting of the clutch-gear O with the driving-shaft N, and it is found in-practice that this mechanism permits the sto ping of the tool much more quickly than wiiere the driving-shaft is provided with a speed-cone and heavy belt connected to the same, which when set in motion acquires so much momentum that it does not stop for some time after the motive power is disconnected.

With the construction -shown there are no parts attached permanently to the drivingshaft which have any considerable momenshaft.

tum, andthe driving-shaft thus stops as soon as the clutch is disconnected therefrom.

The mechanism for operating the feed-arm consists of an eccentric ring or segment k, fitted to an eccentric groove r in the outer face of the crank-gear H and connected by a link l with a crank upon the innerend of the The feed-shaft al is shown j ournaled in the usual manner in a bearing b upon the frameplate A, below the bearing G, and provided at its outer end with the feed-arm c and at its inner end with the orank'7 to which the link Z is pivoted.

The eccentric groove and segment give a uniform throw to the link Z and a uniform degree of oscillation to the feed-arm c.4 In such feed-arm a dovetail orl undercut groove is usually provided in which vthe inner end of'an adjustable crank-pin mv issecured and the outer end of such crank-pin pivoted to the connecting-rod h, which actuates the rocker,

g. The rocker g has'a spring-pawlvto engage the feed-gear f inthe usual manner. The

4feed crank-pin m is adjustable upon the feedlarm to vary the degree of feed, and being.

overhung it is sometimes so severely strained by the resistance of the feed-screw F that the crank-pin is broken at its neck.

lTo strengthen the crank-pin, means are provided in the present invention to support its outer end efficiently while maintaining its adjustabilityto and from the center of the feed- Such sup ort isvsecured by forming the outer end of the crank-pin m with a nut n and mounting the adjusting-screw in the same and in bearings i, projected outwardly from the ends of the feed-arm c.

When the lfeed crank-pin is adjusted by turning the screw, the outer end of the pin is rmly supported thereby, While the inner end is supported by the groove or longitudinal slot in the feed-arm c, to which it is snugly fitted. The feed crank-pin is'thus supported at its inner and outer ends and is thus protected' from bending or rupture under any normal strain.

The improvements in the crank-gear increase its range ofrs eed very materially, the improvements in t e feed-arm increase the durability of the feed crankin, and the improvements in the driving-s aft connectionsv enable the electric motor to be used advantageously and the movements of the ram controlled with the utmost precision by means `of a clutch-lever in reach of the operator while in his working position. The use of such a machine from its motive power much more Iquickly than can be done by the shifting of a belt upon speed-pulleys, and the stopping of the machine when the driving-shaft is unclutched is greatly facilitated by the use of a' lbrake atsuch time.

With the construction' showny the opera- IIO IIS

yclutch furnishes a means of disconnecting the tion of the clutch-lever i' serves whenv the clutch-hub is retracted to actuate a brake by pressing the clutch-hub P against thehub of the'hand-wheel S2 upon the driving-shaft N. The hub of the hand-wheel is shown in Figs. 3 and 4 faced with leather, and the clutch-hub is embraced by the fork P connected with the hand-lever Q, as shown in Figs. 1, 3, and 4. When the clutch-hub is pressed hard against the hand-wheel, the friction of the fork upon the clutch-hub develops sufficient resistance (with the train of of gearing shown in Fig. 5) to stop the vcrankgear and the ram almost instantly. Such arv rest of the crank-gear results because the clutch detaches the driving-shaft entirely from the gearing which connects it with the motor, and the momentum of the motor and its connected gears have thereafter no effect upon the driving-shaft. This is a matter of great convenience in setting the ram quickly in various positions with the aid of the gearing to determine the stroke of the tool and its relation to the work-piece.

`We are aware that it is not new to connect an electric motor with a machine-tool for driving the same and that lit is not new to connect a clutch and brake to operate as described, and what we have claimed in thepresent application is therefore the particular construction and arrangement of these parts.

Having thus set forth the nature of the invention, what is claimed herein is-v 1. In a metal-shaperghaving a frame with ram C in the top and a pitman B vibrated to reciprocate the same, the combination, with the frame, having the bearing G at one side of the pitman, of the crank-gear shaft I j ournaled therein7 the crank-gears H and H, of diverse sizes secured together upon such shaft within the frame and the gear H next the pitman Bhaving the crank-pin J to engage the pitman, the driving-shaft N having the double-face gear-wheel M, the intermediate shaft K with the pair of pinions L and L of diverse sizes connected by a sleeve and mounted to move longitudinally thereon, and adapted to mesh respectively with the crankgears H and H and to clear the larger gear H when required, the sliding rod Z2 extended through the frame at the edge of the pinion L and provided at its inner end with the jaws Z to embrace the rim of said pinion, and at its outer end with the lever V, the frame having the recess L2 to receive the pinion L when retractedv from the gear H and the driving gear-wheel M located partly in said recess, and the larger pinion L meshing at all times with the gear-wheel M and operating merely as an intermediate without affecting the speed when meshed with the wheel H, and the two pinions L, L operating as a retended across the frame with gearing connected to such crank-gear, the motor R attached to the rear side of the` box-frame and having its spindle projected beyond one side of the frame and provided with the pinion S the gear-wheel C upon the driving-shaft at the same side of the frame meshing with the pinion S, the clutch for connecting the gear-wheel C with the shaft N at pleasure, the guardcase C sustained upon the frame and inclosing the motor-pinion and the gear-wheel O, bearings upon the guard-case, and a journal Q fitted to the said bearings and provided with the clutch-fork I and with the clutchlever Q projected toward the cross-head of the machine, the whole arranged and operated substantially as herein set forth.

i 3. In a metal-planing machine, driving mechanism therefor ,consisting of a highspeed driving-shaft, a double-faced pinion secured to said shaft, an intermediate shaft, having slidingly mounted thereon a pair of intermediate gears of diverse size, rigidly connected together, the larger of said gears meshing at all times with said double-faced pinion, a third shaft having secured thereto a pair of gears of diverse size, means whereby said j intermediate gears may be alternately shifted respectively into engagement with the gears on said third shaft, and means for connecting said last-mentioned gears with driven parts of the planing-machine.

4. A metal-planing machine having in combination, a reciprocating tool-carrying ram, a driving-pitman connected to said ram, means for driving said pitman comprising a drivingshaft having secured thereto a double-faced gear, an intermediate sliding gear of larger diameter meshing at all times with said double-faced gear, a gear of smaller diameter spaced from but secured to said intermediate gear to slide and rotate with the same, and two large gears of diverse size connected to rotate together and designed to engage alternately the intermediate gears, and means connecting said large-gears with said pitman.

In testimony whereof We have hereunto set our hands in the presence of two subscribing witnesses.

HENRY E. EBERHARDT. FRED L. EBERHARDT. Witnesses:

ARTHUR F. HEATON, TnoMAs S. CRANE.

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