US1249379A - Multiple drill. - Google Patents

Description

N. 0. G'OLUSMITH.

MULTIPLE DRILL. APPLICATION FILED MAR. I9. 19u.

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NOBWOOD, OHO, ASSGNOB T0 THE WEI, FROG' COMPANY, OIF NORWOOD, OHIO, A CORPORATION OF OHJEO.

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Specification of Letters Patent.

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Application tied March 19, i917. Serial No. 155,678.

To all whom t may concern:

Be it known that l, NATHANIEL 0. GOLD- sMrrH, a citizen of the United States, and a resident of Norwood, in the county of Hamilton and State of Ohio, have invented certain new and useful improvements in Multiple Drills, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to multiple drills particularly of the type adapted for drilling holes in steel rails for railroad use. lt is requisite in drills of this type to drill holes quite close to ether and accurately placed in the rail we s, and these holes are to 4be drilled all at one operation.

ln United States Patent No. 378 748, dated February 28, 1888, issued to eir, Fartington and Goldsmith, is shown and described'a multiple drill for a like purpose, and in this drill as in the invention herein, there are adjustable heads, one for each drill, which slide lon itudinally of the machine, and in which' t e operating parts for a jacent drill heads are set alternately hi' h and low so that the heads may be broug t close together for drilling holes in rails, without the operating parts interfering with each other.

The ob'ect of my invention is to provide means w ereby a number of holes can be drilled in material, these holes spaced at different distances apart in planes either parallel or intersecting. material can be mechanically carried under proper position, which can be held in proper position while the drilling operation is performed, and mechanically carried away from the drill heads after the drilling is done, with means for mechanically supplying lubricant to the drills, carrying away sai lubricant and cleaning the machine of the resulting chips. v

l accomplish this by a machine having a bed plate, two or more housings which supporta cross rail u'pon which are carried a number of sliding drill heads adjustable along said rails and also adjustable in a plane at right said bed plate also supports a power moving table, with a means for reversing direction of its movement, and is provided with suit- Also means whereby the adjustably located in' angleswith said rail. -'ll`he rollers, with clamping.

and adjusting devices, with adjustable and rotating stops. 'llhe said table is skeleton frame with 'deflccting aprons to carry'lubricant and chips away from the supports upon which the material rests while the drilling operation is performed.

This feature of a skeleton framework in itself forms a valuable and important part of the invention, and while other features of the invention relate specifically to improvements in multiple drills, it will be understood that the skeleton framework construction is applicable to many other machines such as milling machines, boring Inachines, planers and the` like where quick elimination of the lubricant and the chips is important.

rllhe drawings show conical rollers (17), a shape Vespecially designed to support and carry a railroad l rail, but l do not wish to limit myself to this conical shape, as it can readily be seen that the shape of the rollers can be changed to accommodate any section, either dat, round, l beam or any other form which the material to be' drilled may have, or the rollers may support a drilling jig which holds a number of separate pieces,I each of which is to be drilled independently.

The above objects .and purposes li accomplish 4by that certain construction and arrangement'of parts to be hereinafter more specifically pointed out and claimed.

ln the drawings, Y

' Figure .1 is a vertical section of the machine on the line 1, 1, of Fig. 2, showing a drill head in vertical section.

Fig. 2 is a front elevation of the machine.

Figs. 3 and 4 are side elevationsof the two parts of a drill head, disassembled.

.,Fig. 5 is a detail top plan'view of the table showing one of the machine standardsy in section. j

Fig. 6 is a detail section of the head revolving means.

The bed and table.

danges 6, 6,' on the forward side of thettu root.

as to slide upwardly. and 105 and reverse it standards. As shown, the standards are hollow for purposes of lightness and economy, and this renders somewhat confusing the showing in, Fig. 1, but it will be readily understood that any desired means for pro` viding a sliding support for the tablefon the standards will be sufficient.

In the base of the table at the desired number of points along the same, are thrust bearings 7, in which are mounted and keyed against rotation the large screws or capstans 8. Under these bearings, for receiving the screws in the bed of the machine, are individual casings for each screw device, said casings having the top members or plates 9 and the base plates 10, said base plates having sleeves 11, which seat in suitable holes in thebed.

Inside of the casings and threaded so as' to engage the screws, are worm wheels 12 having sleeve yportions or hubs 13, which are the threaded parts .of the wheels and which engage around the screws. Running along `the front ofthe machine and suitably suppo'rted'in cylindrical casin s 14that bolt to the front of the screw an worm wheel casings, is a shaft 15. This shaft carries, inside of said cylindrical casings, worms 16 that mesh with the worm wheels 12. The revolving of the shaft causes the worm wheels to turn, and since the screws or ca stans are held nonrotatably in the table, t e sleeves or hubs 'of' the worm wheels will `cause the table to rise or fall as desired. No particular form of drive for the device is shown, but it will be understood that when drilling is to be done, some method of revolving the shaft 15 is provided which will cause the table to rise slowly carrying the work .up against the drills, `and when the drilling is com leted to .stop the revolution or Abringngthe table back to its original position.

Mounted along the table at a number of points are the conical rollers 17, the same having supporting journals at 18 and 19 in mem ers 20 and 21, extending the length of the table and forming' part of the skeleton frame. While we have described the part 3 as atable, the present machine differs quite materially from ordinary drilling machines in that there is no table in the true sense. The part marked 3 forms a rear or inner portion of a skeleton framework and the members 20 the front portion of this skeleton framework, while the rollers 17 'support the work to be operated on. Thus the table so to speak is a support for the work, open between the'frontand 'rear portions, with transverse supporting rollers to support the work. Thus there is no table to' collectchips and cuttings from the drills, but these cuttings at once drop down between the rollers. These rollers are mechanically driven, as will be described, and are housings is a worm 26a the support for the rails 22. Since they'are conical, the rails will lie along their surface so as tosupport the webs in horizontal position while being drilled, but if lother shapes of rails or I-beams or channel bars are to be accommodated by the machine, then other shaped rollers should be used. There are two clamping bars which run the length of the table, the outer bar being the movable bar and the inner bar being adjustable. The provision of adjustability of the inner bar in coperation with the conical support, permits the exact positioning of the rails of different heights. The whole table may be made in one skeleton casting, with spaces for the rollers opening below into the oil aprons or troughs to be hereinafter described.

Operated from a splined shaft 17, ated from the drill operating gears, is a gear 17b at the 'right end of the table. Supported along the front of the table is the shaft 17, which by means of gears 17d drives the rail supporting rollers, the roller shafts 18 having each a gear 18a meshing with the shaft driven gears 17d.

The inner bar 23 of the rail clamping device ha-s spaced along the top thereof a number ofv housings 24 for a shaft 25 that extends the length of the machine. The bar is cut away beneath the housings A24 so as to receive a worm wheel 26, and this worm is mounted and splined on a screw 27. The screws 27 are journaled in the bar and extend rearwardly therefrom where they enter a threaded socket 28 in the standard 2.

Mounted on vthe shaft 25 inside of the which meshes with the worm wheels 26. By revolving the shaft 25 by hand. in some suchway as fitting a wrenchl over its end, or the like, the worm wheels and the screws will act so as to force the bar 23 forward or back as desired. The screws .and worms turn together, and the screws feed in and out of the sockets in the main standards.

The front clamp bar 29 is made of heavy iron, to which is secured a socket member 31. A bolt 32 in the socket piece serves to retain the thrust bar 33 of the device for advancing the clamping plate. A lever 34 pivoted at 35 to the table and pivoted to the thrust bar is connected at its lower end to the piston lrod 36 of an air cylinder 37. This cylinder may be of any type and suitably mounted on the table. It 1s shown in Fig. 1 only diagrammatically.

In mounting a rail on the table, it is fed to the conical rollers with the head of the rail toward the front of the machine or to the base of the rollers. The revolving rollers will draw the rail quickly into place and bring it up against one of the stops to be described. The air is then turned on in the front clamp device and the bar thereof will llt) magere be advanced against the head'v of the rail, clamping it in place. To eject the rail, it is understood that the rollers again will move it out quickly and easily, the whole table moving up and back during each drilling. g f

llt should b e noted that mounted in the inner ends of the arms or thrust bars of the forward clamp is a rod38 which runs the length of the machine .and may be used to push in the clamp bar at points where there is no separate device provided for the purpose.

The raising of the table has been described, and it can be seen that by doing so the rail properly `centered and clamped tightly can be brought up against a largenumber of drills for simultaneously boring or drilling holes in the web thereof.

The drill heads.

The drill heads are stationary so far as up and down movement is concerned, and separately 'adjustable along the machine longitudinally, as well as movable in the are of a circle' so as to provide for diderent alinements for the different heads or drilling units.

The heads are all of the same height, but are adapted to drive alternately from two shafts one above thejother. Also the driving gears for the drills are arranged alternately one up and one-down on the frames of the heads.

As shown in Figs. 3 and 4 (which show one of the upper/driven and upper geared heads) there is in each instance a standard 40 for each head, this standard serving to mount the gears 41 and 42 which are coupled together. Below the standard portion 40 is the main piece 46 of the heads` This main piece has guide plates 47 and 48 mounted at the rear thereof, and adapted to engage over the extending fanges 49 of the horizontal frame piece 50.

This piece 50 is suitably mounted onthe standards 2 of the main frame, and has alon its lower portion a rack 51 by means o which the longitudinal adjustment of the heads is accomplished. At the lower end of the main frame portion of the heads is a hole for a stub shaft 52 which carries a pinion 53,'said pinion being located in asuitable recessl in the said head frame portion and being in mesh with the rack` above mentioned. By turning the stub shaft 52 by means of lts head 55, the drill frame can be adjusted along the horizontal frame piece 5() of the machine.

lt should be understood that the' above described members of the drill head frame, i. e. the standard portion andthe main portion that slides longitudinally of the machine, are preferably in one piece.

To the standard portion at the `rrear is 60. The gears v lsoas to slide thereon but rotatetherewith,

bolted a yoke member 56 or 56, the former and said gears are carried in the bearings of the yokes. Thus at whatever position the yokes are set along the machine 'the gears 58 will be driven. These gears mesh with the gears 41 held at the rear of the standards andl drive the gears 42. Thus `either the upper or lower shaft will drive the drill operating gears no matter where along the machine the drill head is located.

The cylindrical members 61 which contain the drill shaft 62 have bosses 61a that extend. over the forward projectionof the main frame portion of the heads. lln the showing in 'Fig 3, the upper boss 61*L on alternate cylindrical members for operation from the upper shaft is quite high, which is not the case in the lower operated drills. llt is required to have this to give support to the drill driving gears which must be high to meet the gears driven from the yokes and the said upper shaft.

A shaft 63 passes down through the bosses and the main frame portion and carries at its upper end the gear and beveled pinions 64, 6.5, the former of which meshes with the gear 66 on the drill shaft. The pinion 65 meshes with the gear 42 in the standard portions of the drill frames. Thus the drive from the two cross shafts of the machine, be the same the higher or the lower shaft, will be communicated by the various gears above described `to the drill shaft.

' The purpose of the arrangement of the cylindrical members which carry the drill shafts is so .v that they will be revoluble on the main frame portion of the drill heads. It can be seen that ,the shaft 63 serves as the pintle of a hinge on which the drill shaft retaining members will swing on the balance of the'frame.

This swinging can be done without bring ing 4the driving gears out of mesh. as the gear 66 travels arounduon the center of the gear 64; Set in the boss 61a at the lower end of the cylindrical drill shaft retaining member of each drill head, is a sleeve 67 that is keyed at 68 to the inside of the boss. This sleeve only loosely engages over the shaft 63 which passes through the boss, and at the lower end of the sleeve is a worm wheel 70. Mounted horizontally in the lower end further use.

of the main frame portion ofthe heads is the worm 71 (Fig. 6) which is turned by means of its square end 72. The revolving of this worm which is in meshv with the worm wheel last above described, will cause the cylindrical member to revolve around on the shaft 6311s a hinge pintle, thereby swinging the drill shaft 'into any desired position over the work out of 'alinement with the other drills.

A series of lubrication supply pipes 73 are provided discharging directly over the work as nearly as possible. A' lar e quantity of lubricant may be used wit out excessive waste, because of the fact that it is caught and returned by means of trough members 74 formed as part of the table casting beneath the recesses therein for the conical rollers. At the front of the table and the lower end of the troughs yare aprons 75 suitably bolted in place. These aprons permit all of the lubricant 'falling on the work to run down into the trough 76 formed at .the front of the machine base. be easilyv strained and pumped back for The pouring of lubricant on in this way results in the carrying away of chips and the like cut out in drillin and makes the work easy and not destructlve to the drills, or other cutting tools.

It is believed that the various features of the machine have now been pointed out and operation described. The operations are generally the same for a certain number of rails, and thus when the adjustable parts are set, the machine can be used to rapidly drill the required holes. This adjustment will be to set the drill heads at the proper relative position to each other longitudinal' of the machine, and also set them with regard to the alinement of the drills along the webs of the rails. Extending alongthe machine between supports 90, 90, is a ,marked bar or scale 91. Each of the drill heads has* t a forwardly extending lug 92 which rides under the bar and thereby the drilling points can be accurately measured. The rear clamping mem-ber is to be adjusted for the hei ht of rail that is to be used, it being un er'- stood that the air operated clamp will always advance to about the same position over the table.

When these various adjustments are made the rails maybe slid into the machine, one after another drilled at one operation and rolled on out. There is no need of describing the means of driving the drill operating shafts or the table raising worms. These may be of any type desired.

The yoke members are formed of the' same shape, so that they may be used interchangeably, notwithstanding the staggered arrangement of the heads, by simply reversing the position of the yoke. .As many of `pathway of the From this point the liquid can ten feet long,

length. Another `fied by the substitution vvof tures without 'bricant to the the heads may be used as desired and the rest removed -from the machine.

For a stop `for the positioning railv sections in the machine, a rod 80 is journaled in brackets 81 along the machine, said brackets being .mounted on the standard members at the front of the table which are not used as a support for the clamp air cylinders. On the rod 80, pivotally mounted by their journals 83, are hooked stop members 82, shaped like the numeral 7, which are adapted to swing down separately with their ends in the space between the two clamping members of the table. Collars 84, slidable along the rod on each side of the journals 83 provided with set screws, serve to position the stops adjustably. When in use they are tipped down by means of handles 85, so that the ends of the hooks lie in the space over the rollers.. These stop members are used to be projected into the rail which is to be drilled so as to form an abutment or stop and thus fix the position of the rail under` the drills'. For example, a number of rails may be, say, others fvefeet, others twenty feet and so forth. These stops are located atthe right position and when the iivefoot stops are being entered under the drills, the proper stop is thrown down for that length of rail, and thusthe drills will all come atI exactly the same place on such length of rail being entered, the iirst stop is thrown up out of the way and the second one thrown down. TheseA stops are all arranged for the various lengths, so that no time need be taken in adjusting the metal tobe drilled into proper position.

The details ofthe machine may be modiequivalent strucdeparting from the spirit of my invention, and I do not wish the failure to mention such structuresin thel above mat er to give a narrower construction to the claims that follow than their wording would ordinarily imply.

Having-thus described my invention, what claim as new and desire to secure by Letters Patent, is 1. In a machine of the character specified, a revolving cutter, means for supplying lucutting portion thereof, a supporting table of skeleton form, with work supporting rollers thereon spaced apart tp1 form passageways for the lubricant and c 1ps.

2. In a machine of the character specified, a revolving cutter, means for supplying lubricant to the cutting portion thereof, a supporting table of skeleton form, with work supports thereon spaced apart'to form passageways for the lubricant and chips, and a deflecting apron to carry 'off the lubricant and chips.

maaar@ 3. ln a machine of the character specied, a revolving cutter, means for supplying lubricant to the cutting portion thereof, a

'and a deflecting apron to carry 0H .the lubricant and chips, withA a receiving reservoir for the lubricant and chips.

4. lln a machine of the character specified, a work supporting table of skeleton form, a clamping device therefor, and independent work supports spaced apart to form passagevvays for the lubricant and chips, said supports being placed transverse and below the jaws of said clamping device.

5. lln a machine of the character specified, a Work supporting table of skeleton form, a

clamping device therefor, and independent Work supports spaced apart to form pas- -sagevvays for the lubricant and chips, said supports being placed transverse and below the jaws of said clamping device, in combination With means for moving said table.

6. lln a machine of the character specified,

one or more slidably adjustable cutting heads, each consisting of a body and' a journals therein high which l'rotates on an axis at right angles to the travel of the body, in combination With the worm and Wheel for adjusting and holding said hinged member in fixed position with relation to the body.

7. In a multipledrill, the combination with a pair of driving shafts, a series of drill-heads adapted to be mounted in desired position in the machine, members forming part of said heads and lying adjacent to said shafts alternately foreach head, and yokes on the said members, said yokes having journals therein for lsupporting a driving member over one of sald shafts, said okes being interchangeable to brin the and low with re ation to the heads so. asto alternately drive the heads from the upper ,and lower shafts.

8. ln a machine of the character specied, a revolving cutter, means for supplying lubricant to the cutting portion thereof, a table, with a plurality of supports for the Work, with passagevvays through the table and between the supports for the lubricant andchips.

NA'llHdNllEL GULDSWTH.

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