US626502A - Worth - Google Patents

Description

No. 626,502. Patented lune 6, |899. W. D. NEVILLE.

MULTIPLE BORING MACHINE.

(Appnmin'n med .my 1e, 189s.)

(Nn Model.) 3 Sheets-Shao( I.

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Patented )une 6, |899. W. D. NEVILLE.

MULTIPLE BORING MACHINE.

(Application led July 16, 189B.)

3 Sheets-Sheet 2.

(No Model.)

Tm 123. I

me mams PETERS co. unowlumo.. wAsv-mamm n. c.

No. 626,502. Patented .lune 6, |899. W. D. NEVILLE.

MULTIPLE BORING MACHINE;

(Application led July 16, 1898.)

3 Sheets-Sheet 3.

(No Model.)

4: Noanls Lz-rens co. Pnotaixmo. wAsnmsrou. n. c.

UNITED STATES PATENT OFFICE.

1VILKINSON D. NEVILLE, OF BAY CITY, MICHIGAN, ASSIGNOR TO .THE VAL- WORTH d; NEVILLE MANUFACTURING COMPANY, OF SAME PLACE.

MULTIPLE BORING-MACHINE.

SPECIFICATION forming' part of Letters Patent No. 626,502, dated June 6, 1899.

Application filed July 16, 1898. Serial N6. 686,115. (No model.)

To @ZL wlwm, t may concern:

Be it known that I, WILKINSON D. NEVILLE, a citizen of the United States, residing at Bay City, iu the county of Bay and State of Michigan, have invented certain new and useful Improvements in Multiple Boring-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to multiple boringmachines especially designed for the boring of cross-arms for telegraph-poles; and it is the object of my invention to obtain a machine in which the boring of all the holes for the insulator-pins, together with the angular holesfor the securing-bolts and brace-rods, is accurately performed without further attention from the operator than the placing of the arms in the holder.

The invention consists in the peculiar construction of a machine comprising two gangs of angers or drills reciprocating in substantially parallel planes and a rotary work-holder adapted to successively present different sides of the work to be operated upon by the angers of the different gangs; further, in the peculiar construction of the reel or rotary workholder, and, further, in the peculiar construction, arrangement, and combination of parts, as more fully hereinafter described and claimed.

In the drawings, Figure l is a plan view of my machine. Fig. Zisacross-section thereof. Fig. 3 is a bottom plan. Fig. 4 is a horizontal section below the bed, showing a plan of the drive connections for the lower spindles. Fig. 5 is a longitudinal section. Fig. 6 is an end elevation. Fig. 7 isacross-section showing the means for tripping the work-holders to release the work therefrom. Fig. Sis a diagram perspective of the reciprocating mechanism for the slide.

A is a suitable frame or bed mounted upon standards B and supporting the operating parts of the machine.

C is a reciprocating table or slide secured in transverse guides D at the opposite ends of the bed. Upon this slide are mounted in bearings E a number of transversely-arranged parallel drill-spindles F, the bearings E being adjustably secured in position on the slide,

so that the spacin g of the spindles may be 'varied according to the requirements of the work. To the rear end of each spindle is secured a bevel gear-wheel G. which gears mesh with bevel-gears II, secured to a longitudinal shaft I, journaled in bearings on the slide.

In order to facilitate the ready adjustment of the spindles upon the slide, I preferably construct the latter in the form of a rectan- 6o gular frame having the parallel longitudinal bars a and Z) grooved upon their inner side. Each of the bearings E comprises the separated boXes c and c', connected bythe crossbar (l, which is adapted to t inthe space between the bars 'a and l), the boxes resting on said bars.

e is a cross-bar or clamping-plate having its ends engaging the groove in the bars of. and Z9 and secured to the bar d by a clamping 7o screw or bolt f, all so arranged that by tightening the screw fthe boxes will be firmly clamped upon the bars a and b in any position to which they have been adjusted. The gears I'I may be correspondingly adjusted 75 upon the shaft I and are secured in position thereon by keys,`setscrews, or in any other suitable way.

Below the plane of the spindles F are secured in bearings upon the body a second 8o gang of drill-spindles J. These spindles are preferably arranged in planes parallel to the plane of the upper spindles, but are not all parallel to each other, as somme of the spindles are for the purpose of boring angular holes. In the drawings I have shown the central and the outer spindles of the lower gang as parallel to each other and to the upper gang and the two intermediate spindles as arranged at opposite angles and respectively above and 9o below the plane of the central spindle, this .arrangement being for the purpose ofv boring the.holes for the securing-bolts and bracerods of telegraph cross-arms. The bearings x in which these spindles are journaled are secured to the longitudinal separated bars g and h of the bed, which latter is in the form of a rectangular frame open in the center.

The bearings for the central and angular spindles consist of the stepped boxes tandj, seroo cured to the bars g and h, andthe bearings for the outer spindles are formed by the boxes 7c,

which engage with grooved collars 'Z on the;

spindles J. To provide for the angular movement of the spindle, as well as for the adl justment of the positions of `the outer spindles, I connect the arms K to the slide by a. hinge or pivotal joint, which ,permits 4them to, swing in a cross plane yto the aXis of the sp'indles.

L are pulleys feathered upon the spindles J between thefseparated journal-.boxes therel for and preferably provided .with the opposite extending sleeves m and n, passing .through said journals.

'.llheslideC is provided Withmechanism for reciprocatingit, with an intervalof rest after l each .reciprocation wfhile the-slideisin its rear i position.

This I have shown in 4diagram in l Fig. vascomprisingthe following construc, tional is a shaft extending longitudinally; beneath .the :bed and journaled in suitable;

bearings thereon.

2 is a gear-wheel on this shaft, which meshes `with the gears Sand 4. on the parallel longitudinal shafts 5 and `6, respectively. The opposite ends of theshaf ts 5 and 6 are respectively provided with gear- Wheels .7 and 8 and are journaled in movable bearings, which permit yof said gear-wheels being .thirownin or out of mesh, respectively, with a .gear-wheel 9 on a shaft 10 and with an intermediate gear-wheel 11, meshing with I said gear 9. 12 ,and 13 are pinions on the shaft 10, which engage with transverse racks 14on the underside of the slide C.

lisaA gear-Wheel on the shaft 5, meshing with a.v

gear-wheel 16 on a shaft 17. 18 is a gearwheel meshing with the gear-wheel 16 and; mounted upon shaft 19. 2O and 21 are cams on the shafts 17 and 19, respectively, which bear against the rolls 22 and 23 on fthe `shafts 5 and ,6, Aall so arranged that when motion is imparted to the shaft 1 it will be transmitted through the medium of gear- wheels 2, 3, 15, 16,

and 18 and shafts 17 and 19 to the cams 2O v and 2l. These are so timed as to cause the gear-wheels .7 and 8 to be alternately-thrown into .mesh with .the gear-wheels 9 and 1l, with an .interval in `which both sets of gears are outof mesh. When the gear-wheels 7 and 9 are in mesh, motion will be-transmitted to the shaft 10 and pinions 12 and 13 thereon in a direction ,to cause the racks 14 to be fed forwardand .when the gear-wheels 8 and 1l are 1 in mesh the racks will be -moved in the reverse direction.

In 4front of the bed is arranged a rotary work-holder or reel, which is of the following l construction M is a shaft extending longitudinally ofthe bed and journaled in forwardly-extending brackets Ml at the opposite ends of the bed.

Upon this shaft are mounted the heads N, there being preferably three heads arranged near the ends and at the center of the shaft. Each head is provided with a number of radial arms N, having angular bearings at their outer ends adapted to receive the Work and clamping arms or levers for holding the work in said bearings. In the construction shown in the drawings each head is provided with four of the arms N, which have L-shaped bearings formed by the arms N2 and N3.

O is the clamping-lever, which is pivotally secured to the arm N2 and is provided at its outer end with a flat spring O for bearing against the Work.

P are rock-arms, one for each lever, carrying at their free ends antifriction-rolls F, adapted to bear against the inner ends of the levers O and clamp them against Vthe work. These rock-arms are secured to rock-shafts P2,eXtendinglongitudinal-ly and journaled in bearings onthehead, the corresponding arms of each head ibeing secured to the same'shaft and leach shaft being provided with an operating-handle P3.

At theouterendsof the shaft M are secured the `spider heads M2, having radial arms M3.

Q are latch-arms pivotally secured to the bed and having sockets at their outer ends adapted to engage with theends of the arms Mawhell in their lowermost position, springs Q' serving ytodrawand hold them in such engagement. To simultaneously disengage said latch-arms, I yprovide means which in the drawings are shown as consisting of the flexibleconnectionsR, passing downward beneath the floor .andconnected to a foot-lever It in front of the machine.

The upperspindles are driven through'the medium of the shaft I,W.hich is provided with a pulley I, connected .by a belt I2 With a counter-shaft above, the length of the belt being sufficient to permit of the reciprocations-of the slide. The lower spindles are driven by belts connecting .the lpulleys L with pulleys L on the counter-shafts L2 below,which shafts are respectively parallel with their correspondin g spindles. These shafts are connected .by bevel-gears `I..3 with a longitudinal shaft L4, which is driven by a belt connection with any suitable source of power.

The parts being constructed as shown and described, the operation of the machine is as follows: `Motion being imparted to the various parts, as described, the spindles of both the upper and lower gangs will be constantly rotated, and at the same time the slide C will be reciprocated, moving slowly forward and having a quick return movement, with an in- 'terval of rest in its rear position, all of which is accomplished by the mechanism-before described. The movement of the slide C will impart a similar reciprocating movement to each of the spindles .I of the .lower gang through themediu 1n of the lswinging arms K. The operator, taking his position in front of ICO IIC

the machine, places the cross-arms or work to be bored in the L-shaped bearings on upper side of the heads N. IIe then turns the handle P3 on the rock-shaft P2, which rocks the arms P, causing the rollers P to bear against the outer ends of the levers O, moving said levers into a position where they will clam p the work in the I shaped bearings, the springs O' compensating for any slight inequalities in the size of the work. After the work is securely clamped the operator, pressing his foot upon the lever It', disengages the latch-arms Q from the arms M3 of the heads M2 and then gives the work-holdera quarterturn, the springs Q causing the latch-armsv to automatically engage again with the arms Ms to stop and hold the work-holder. In this position the work is opposite the upper gang of. drill-spindles, the angers or bits of which in the forward reci procaton of the slide bore the series of holes for the insulator-pins in the work. Vhile this work is being performed the operator places another arm in the succeeding set ot' bearings on the work-holder and clamps it, Y as before described. As soon as the angers are withdrawn the work-holder isgiven another quarter turn, which will carry the work just drilled to a position opposite the lower gang of spindles, at the same time turning it so as to present a side to be bored which is at right angles to the side previously bored. In the next forward reciprocation the lower gang of spindles will bore in the work the angular holes for the securing-bolts and brace-rods while-the upper gang is drilling the holesfor the insulator-pins of the succeeding crossarm. In the next quarter-turn of the workholder this cross-arm first engaged will be brought to the disengaging position, where an arm S, secured to the reciprocating slide C, will in the forward movement thereof press against the handle P3 of the rock-shaft P2, turning said shaft sufciently to disengage the locking-arms P from the levers O and allowing the latter to open and vdrop the cross'- arms from the work-holder. Toprevent the cross-arms from dropping upon the feet of the operator, I provide suitable guides. (Not shown.)

Vith my machine the work of boring the cross-arms or other similar work may be performed quickly and with but little labor on the part of the operator; but inasmuch as the reciprocation of the au gers is timed the workman is obliged to keep up with the machine, and thus more work will be accomplished than if the time of performing the operation was under his control. i

W'hat I claim as my invention is- 1. In a multiple boring-machine, the combination of a reciprocating head or slide, a series of boring-spindles and a common driveshaft to which each of said spindles is geared carried by said slide, a series of spindles longitudinally slidable in stationary bearings and an actuating connection between said head and spindles whereby the latter are caused to reciprocate simultaneously with said head. i

2. In a multiple boring-machine, the combination with a reciprocating head or slide,`

of a series of boring-spindles carried thereby, asecond series of angularly-arran ged boringspindles longitudinally, slidingly secured in stationary bearings and swinging links connecting said angular spindles t0 said slide and adapted to cause them to reciprocate in bination of a series of angularly-arranged.`

boring-spindles, bifurcated stationary bearings in which said spindles are longitudinally slidably jonrnaled, a pulley vfeathered upon each spindle between the bifurcations of'its bearing, a series of shafts having pulleys thereon arranged parallel respectively with said angular spindles, and adapted to be belted thereto, a drive-shaft, and bevel-gear connections between said pulley-shafts and drive-shaft.

5. A work-holder comprising separated.

heads, each having an angle-bearing formed thereon, a clamping-lever pivoted to each head on one side of said angle-bearing andV having oppositely-extending clamping and actuating arms and rock-arms on a common rock-shaft journaled in said heads adapted to respectively swing inthe path of the actuating-arms of said levers and move the same into their clamping positions.

6. In a rotary work-holder, a head having a series of radial arms bifurcated at their outer ends to form L-shaped bearings, levers pivoted respectively to one of the bifurca tions of each radial arm, and having oppositely-extending clamping and actuating arms, and rock-arms pivoted to said heads between said radialarms and adapted to be rocked in the path of said actuating-arms to move said levers into their clamping positions. 7 l A rotary work-holder com prisin ga shaft, heads thereon having L- shaped bearings formed thereon, a clam ping-lever pivotedv to one arm of each of said bearings, and rockarms on a rock-shaft common to corresponding L -shaped bearings of therespective heads journaled in said heads adapted to be turned to respectively lock said levers in their clamped position.

In testimony whereof I affix my signature in presence of two witnesses.

NVILKIN SON D. Witnesses:

A. W. TIBBETTs, G. A. MEYER.

NEVILLE.

ICO

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