US925508A - Multiple drilling-machine. - Google Patents

Description

G. R. RICH.

MULTIPLE DRILLING MACHINE.

APPLICATION FILED JULY 24, 1905.

925508. 9 Patented June 22, 1909.

M 5 SHEETS-SHEET 1.

G. R. RICH.

MULTIPLE DRILLING' MACHINE. 4

APPLICATION FILED JULY 24, 1905.

Patented June 22, 1909.

6 SHEETS-SHEET Z.

G. R. RICH. v MULTIPLE DRILLING MACHINE.

LPPLIOATION FILED JULY 24, 1906. I v

, Ptented June 22,1909.

5 sums-sum. a.

IIIWW g I jmmnm ijJLiillulnliiluili I G. R. RICH.

MULTIPLE DRILLING MACHINE.

APPLICATION FILED JULY 24, 1905.

' Pa tented June 22, 1909.

'5 SHEETS-SHEET 4.

G. R. RICH. MULTIPLE DRILLING MACHINE. APPLIOATION FILED JULY 24, 1905. I '925,5Q8 Patented June 22, 1909.

B SHEBTB-SHEET 5,

UNITED STATES PATENT oFFIon GEORGE It; RICH, or BUCHANAN, MICHIGAN, ASSIGNOR TO CELFOR TOOL COMPANY, A

c o CORPORATION OF ILLINOIS.

, MULTIPLE nRILiING-MAcnmn.

Specification of Letters Patent. Application filed July 24, 1906. Serial No. 271,095.

Patented June '22, 1909.

.citizen of the United States, residing at Buchanan, in: the. countyof Berrien and State of Michigan, have invented certain new and 'useful Improvements in Multiple Drilling-I Machines, 'of which the following is, iication, reference being had to the panying drawings.

My invention relates to multiple drillingmachines, and it has particularly for its object to provide a new and improved machine suitable for use in drilling holes simultaneously in different parts of arCh-barsfor cartrucks, or similar articles, although, many features thereof may be embodied'in various other forms of drilling-machines besides that illustrated in the drawings and hereinafter described. In the accompanying drawings I have illustrated various features of my invention embodied in an arch-bar drill-press arranged and operating to drill simultaneously two holes at-opposite sides of the center of the arch and also two holes in the end ortions ofthe arch-bar. Each hole is drled by a drill niounted in a separate spindle or chuck,'.the different spindles being so supported as to be independently adjustable toward and from each other, as well as toward a. speciaccomsimultaneously from a common source of power,all being connected-with the same drive-shaft. The work is carried on avertically-movable table provided with handoperated mechanism for moving it rapidly; toward and from the drills, and with automatic power-driven mechanism for feedin the work toward the drills during the actual operation of drilling. The latter is automatically thrown out of operation upon the com pletion of the drilling operation. The mechanism for controlling the feed is placed in front of the feed-table so as to be readily accessible to the operator. The drivingmechanism also actuates a pumparranged to throw water upon the drills during the drilling operation,the water'flowing from the drills back to the pump, so .that the'same water is used repeatedly. In the drill-press illustrated I have also shown a number of other improvements relating to the construction and operation of themachine,all of which are fully hereinafter described and pointed out.

.What I regard as forth in the claims.

In the drawings,Figure 1 is a front view patentably new is set elevation thereof Fig. 3'is a vertio'al'section online 3-3 of Fig. -1; Fig. 4 is a plan view; Fig.5 is a horizontal section on line 5 -5 of Fig. 1; Fig. 6 is a horizontal section on line 6,6 of-Fig. 1; Fig. 7 is an enlarged cross section on line 77 of Fig. 6; Fig. 8 is an em larged partial vertical section through the upper portion of the frameand some of the parts carried, thereby, as, for. example, on ine 8-8 of F'g. 4; Fig. 9 tea partial horizontal section on line 9-9 of Fig. 1; Fig. 10 is an enlarged partial vertical 1010 of Fig. 1; Fig. 11 is a artial horizontal section on line 1111 of Fig. 10; Fig. 12 is an enlarged vertical section online 12-12 of Fig. 1; Fig. 13 is a perspective view, illustrating a. art of the upper portion of the frame; an on line 1414 of Fig. 3.

Referring to the drawings,20 indicates shape and so constructed as to support the necessary parts. As shown in Figs. 4 and 5, the base is oblong,being, in the apparatus illustrated, about four times as long as it is wide. Theseproportions may, of course, be varied as may be desired.

of, as best shown in Figs. 1, 4 and 5. Said standards not only serve in part as guides for the feed-table, but also support various other after described. v I

' 23 indicates a well or basin placed near one as shown in Fig. 5, to receive the Waterfalling upon theutpper surface of the base, 'the said upper sur that end, as shown at 24 in 1g. 3.

The front edge25 of the base projects a ward beyond the intermediate portion. of t e surface of the base, as shown in Fig.3, so as to prevent overflow.

26 indicates a pump connected by -a pipe 27 with the basin 23 for pumping Water therefrom and forcingiit to the drills, as hereinafter described.

28 indicates a plate or frame arranged at the back of the press and extending between of my improved drill press; Fig. 2 is an end section on line-- Fig. 14 is a partial sectional view 21-22 indicate uprights or standards rig idly secured to the base near the ends thereend of the base, preferably'thelefthand end,

the base of the press, which-is of suitable parts ofthe mechanism, as will be hereinace being-pro erly pitched to the standards 21-22, to which its'ends are fixedly secured. For convenience, said plate will be termed, the back platef. plate, together with the standards and base,

ppse the frame of the mamay be said to com chine;-but it will e understood that the frame may be'otherwise made up,it being essential only that it be of proper strength.

and proportions to support theworking parts ject of said groove is to secure and guidethe' upper portions of thediiferent spindle-supporting frames. 32-33 indicate similar grooves at the end portions of the back- -plate 28 near the lower margin thereof; and

34 indicates a similar groove intermediately disposed near the lower margin of said backplate, as shown in Fig. 1. The grooves 32,

33 and 34 are to su port and guide the lower.

ortions of the di erent spindle-supporting rames.

A, 13,, C, D, E, F indicate a series of drillingdevices, which are all alike and are similarly mounted on-the back-plate 28. They are also similarly driven, so that it will bernecessar' to describe in detail the construction and connections of a single one only,it-be ing understood that the same reference numerals are applied to corresponding parts. of eachof said drilling-devices. As bestshown in Fig. 1, there are a series of spindle-supporting frames 35 vertically disposed upon the front side of theback-plate 28,-said frames being secured thereto at their u per ends by-bolts 36 having heads 37 which .t in

the groove 29, as best shown in Fig. 8. :Similar bolts are provided for engaging the grooves 32, 33 and 34 to secure the lower end portions of the frames 35 in position. Obviously, by loosenin the nuts 38, the frames 35 maybe shifted ongitudinally upon the back-plate 28 andbrought to the desired position. As also shownin Fig. -8, the frames 35 are provided at their upper ends with flanges 39 which extend over the upper edge of the back-plate 28 and further support said frames.

40 indicates the housings or cylinders of the different spindles, each of which, as best shown in Fig. 9, is rovided at the back with a slide-plate 41 aapted to fit against and slide vertically upon the frame 35. The slide-plates 41 are held in position by overlap ing guide-strips 42 secured longitudinal y on the frame 35 at opposite margins thereof, as shown in Figs. 1 8 and 9. Bolts 43 are provided for securing the stri )S 42 in position. The arrangement is such t at said strips may be caused tobind tightly upon the Said 'slide'lat.e 41 by tightening the bolts 21 there y clamping the slide-pl to and spindle cylinder fixedly in position. By this means the spindle may readily be moved vertically and secured in different positions of adjustment, and the'i'operative height of the drill carried thereby varied. Eac provided with a forwardly-proj eating handle 44 by which it may bemore readily moved.

45 indicates. the spindles, which carry drills 46 projecting beyond the lower ends of the cylinders 40, as shown in Fig. 1. The s indles 45 may be provided with any suitable mechanism for securing the drills in 'osition and causing them to rotate, but I pre erablyemploy the construction illustrated and described in my pendingapplication, Serial Number 265,679, filedJune 17, 1905; and the drill ispreferably also of the type described in my said ap lication, being of blue-chip steel of uni orm cross section throughout its length and being provided With longitudinal ribs extending along its opposite sides, as'indicated in'the drawings. The spindle is connected with driving-mechanism, hereinafter described, by means of a sleeve 47 which may be an integral art of the spindle and fits upon a vertical s aft 48 havinga feather 49, as shownin Fig. 2, so that said sleeve may move longitudinally thereof and nevertheless rotates in unison therewith. 50 indicates a sleeve secured at the upper portion of theframe 35 and forming a bearing for the upper end of the shaft 48. The lower end of-the shaft 48 is held properly in position by the sleeve47 and spindle cylinder 40. The shaft 48 is driven by means of a bevsled-gear 51 mounted on its upper end and meshing with a beveled-gear 52 mounted on.

a feathered-shaft 53, the ends of which are journaled in the standards 2122, as shown in Fig. 1. .The gear 52.is feathered on the shaft 53 sothat it may be adjusted to different positions thereupon. At one end the shaft 53 carries a gear 54 which meshes with a pinionf55 mounted on a shaft-56,- best shown in Fig. 2, which carries acone-pulley 57. By this means the shaft 53 may be At the oppositedriven at various speeds. end the shaft 53 carries a beveled-pinion 58,

-as bestshown in Fig. 1, through which it is operated, as willbe hereinafter described.

The spindle-*cylinder 40 and spindle are counterbalanced by acounterbalance-Weight 59 carried by a chain 60 which runs over a pulley 61 and is connected by a hook 62, or other suitable means, with the cylinder 40, as shown in Fig. 3; The pulley 61 is carried in a frame 63, which projects from the upper portion of the frame 35, as shown in Fig. 3. The pulley 61 may, however, be carried in any other suitable way so as to move with the frame 35 when the latter is adjusted. In

cylinder 40 is ord'erto' cause 'the gear" 52 to'move with the! "frame 35, when thela'tter is adjusted, sai gear is provided with a sleeve 64 having an, annular flange 65' at its outer end,- as shown SinFig. 14, and 'their'ame 63 is" arranged to embrace said sleeve, as "is also shownin Fig; 14. Consequently, when anyone of the I frames 35 is adjusted longitudinally-of the machine the gear 52 and the counterbalanc-i ing nr1echanismmove with it. 5 '66 indicates. the fe'ed-table, which, as "shown in Fig. 1,;- extends longitudinally of the machine near the lower portion thereof;

*its ends being'fittedbetwe'en suitable guides n on thebase'20,fas=lfest 'sh'ownin'FigJ .12. I he supports 72 are provided with intermediate screw-threaded portions to receive the threads of the-screws 71 ,and at their lower 'ends are provided with oil-cups 73, into "which the lower ends 'of the screws project. At their upperends the screws 71are provided with eveled gears 74, the under surfaces of which are. provided with annular bearings 75 which rest on antifriction-balls 76 carriediat the uppe'r'endsiof the supports 72. 'The ears 74 are connected by a shaft 77, WhlCll'lS fitted in suitable be'arin -blocks 7879 .near the ends of the feed-ta 1e and carries beveled gears 80 In'eshing'with the beveled gears 74, as shown in Fig. 6. 0bviously by'rotating the shaft 77,- both gears 77 and screws 71 are rotated; The arrangement is such that both screws are similarly operated,'that is to say, both rise or descend simultaneously. If desired, one of the "screws 71 may be made right hand and the other left hand so that they may be rotated in opposite directions simultaneously,i'n'which case the gears 80 are arranged as shown in Fig. 6 or the gears may be arranged to rotate the screws in the same direction,'-in which case similar screws would'be employed.

81 indicates a beveled-gear mounted on the-shaft 77' and meshing with a beveled-gear 82 mounted on a stub-shaft 83 which projects from-the front of the feed-table, as shown in Fig. 6, and carries a hand wheel 84 by which it may be rotated. By this means the shaft 77 may be rotated by hand to raise or lower the feed-table. Y In order to operate the feedtable by power I provide'the shaft 77 with a pinion 85, which isadapted to mesh with a pinion" 86=mounted upon a shaft 87 which projects through one end of the feed-table and through a slot in the standard 22, as

'The arrangement is such that -Sl'lOWll in Fig1 6. Thejinner end of the-shaft l I 87 is fittedin a suitableib aring'ss provided c. in one'arm'89 of a bell cr'ank lever 89,'the

other arm "90 iofwhich projects throu h' an o enin '91 infront of the eed-tab e,- as s own 1n Figs' 6 and 7'. As shown in Fig. 7, said lever is pivoted in a suitable bracket 92, so that by lifting the arm 90 the shaft 87 and. 1

pinion 86 are thrown over-toward the pinion '85. By this means the pinion"86 may be moved into or out of engagement with the pinion by operating the arm 'of the bellcrank lever. In practice, the ar'm1'90 'is raised by hand, butit is held in its raised position by a latch 93 having an upright arm so '94 and a horizontal arm 95, as shown in Fig.

l 1. The arm 94 of said latch is (provided with a lug 96 adapted to project un er the arm 90 to holdit-in its raised position. The arm "of said latch projects over an arm 97 of a trip- 35 lever 98, the opposite arm 99 of which is adapted-to engage an adjustable stop 100 carried by the standard 21. The stop 100 may be secured in different positions of adjustment by a bolt 101-, as s own in Fig. 1. 0

when the arm 99 of the trip-lever strikes the stop 100 the arm 97 of said trip-lever is thrown-upward, thereby lifting the'arm 95 of the latch 93 and throwing the-arm 94 away from the arm 90 '95 'of the bell-crank lever which is released and permitted to drop, thereby throwing the pin- 10H 86 out of engagement with the pinion 85.

The result is that the shaft 87 is. automatically disconnected from the shaft 77 stop- 100 ping thefeed-table.

This, however, does not'interfere with the movement of the feedtable by means of the hand-wheel 84, as will be apparent. I

The shaft 87'is driven from the shaft 53 by means of a vertical shaft 102, which, at its upper end, is provided with a beveled-pinion 103 meshing with the inion 58, and at its lower end carries a pinion 104which meshes with a pinion 105 carried by the shaft 87.

The P1111011 104 is mounted on a feather 106 on the shaft 102, so that it may be moved longitudinally thereof, and it is held in engagement with the pinion 105 by a yoke 107,

as shown in Fig.- 1. The shaft 87 is, therefore, constantly rotated, but it does not drive the shaft 77 except when the pinions 85 and 86 are in mesh. It will be noted that the parts are so arranged that when driven by V ower the hand-mechanism for moving the i 'eed table is geared considerably higher, than the power mechanism,as it is desirable that the feed-table may be moved faster whenmoved by hand than when driven by power.

The feed-table also is provided with suitable counterbalancing weights 108 placed near its opposite ends and connected by chains 109 with pulleys 1'10-mounted in the standards 21-22, respectively, as shown in. 130

Fig. 10. In order to givethe-said weights greater leverage, and thereby make it practicable to use smaller weights, the ends of the feed-table are connected with'the pulleys 110 by means of chains 111 which connect with 21111163 8112 of considerably less diameter fan the pulleys 11-0, but mounted on the 110, as shown in Figs. 10 and 11. -The lower ends of the chains 111 are connected in any suitable way with-the ends of the feed-table. 114 indicates idler-pulleysfor guidingthe chains 111. r a I 115-116 indicate clamps carried by the feed-table near the ends thereof for clamping the ends of the work thereto, as shown in Figs. 1 and 5. Said. clamps are provided withcams 117 by which the work is clamped tightly against lugs 118, as shown in Fig, 5.

At its center the feed-table 66 carries a verti-l cally-adjustable central clampfand worksupport 119, which is mounted on a screw threaded stem or standard 120, as shown in Figs. 1 and3. The stem' 120 carries a-nut- 121 by adjusting which the height of the clamp 119 may be varied. Said clamp also carries cams 122 by which the work-may be "clamped against a lug 123, as shown in Fig. 3. V 124 indicates a vertically-disposed guideplate, which is formed integral with the rear portion of the center-support 119 and. ex-

; tendsabove and below the same, as shown in Fig. '3. The upper end of said guide-platter bears againstthe rear surface of the backplate 28, and its lower end bears against the rear face of the feed-table 66, as shown in said Fig. 3. i S'aid guide-plate therefore not only serves to keep thecenter-support 1 19 steady,

' 127 indicated by dotted'lines in Fig. 1.

The operation is as follows :-The several spindles are set at the proper distances apart I For drilling arch-bars they are set as illustrated in Fig. 1.

and at the proper heights.

The center sup ort 119 is also elevated correspondingly. en in proper position the difierent spihdle-cylinders 40 are/secured fixedly in lgosition by tightening the bolts 43. The arch aris then put in position and secured by the. clamping-devices 115, 116 and 119. At this time the feed-table is in its lowermostposition. -The stop/100 is set at the proper height to trip the automatic feedmechanism upon the completion of the boring operation. All being in readiness, the hand-wheel 84 is then rotated to elevate the same shafts 113,..which-carrysaid pulleys holder.

feed-table rapidly until the arch-bait; is in roximity to the drills. The arm QOjbf the Y ell-crank lever 89 a is then lifted into enga ement with'the lug 96, thereby throwingt e automatic or power feeding mechanism mto o eration. The arch bar. is thereby fed.

s owly up against .the drills until the drilling operation iscompleted, when the lever 98 is actuated by the stop 100 to trip the arm 90 and throw 'theautomatic feed out of operation. It will be understood that when the arm 90 of the bell-crank lever-89 is released the weight of said arm 90 suffices to throw the shaft 87 far enough away from the shaft 77 to disengage the pinions-85-86. The

feed-table comes to a stop as soon a'ssaid pin-' ions are disengaged and may be returned to its former position by reversely rotating the hand-wheel 84. It WillzbBilOtGd that all the holes are drilled simultaneously, and as each of the drills is fixedlysecured; in its proper position the different holes are drilled with the utmost accuracy. z

It is apparent that. any desired number of spindles may be em loyed, and they may be disposed so as to dr' lholes atany desired intervals, or at a'v'ariety'of heights above the feed-table, so that the machine has a wide ran e of usefulness; particularly so, .in view of t e fact. that the various adjustmentsof 3 which the drills are capable may be quickly 4 and accurately made without the exercise of any considerable amount of skill.

a While I have describedmy improved drillre s with a considerable degree of particuarity, I wish it to be understood that 1n doing so I have not intended to restrict myself to the s ecific features "of construction illus-' .trate and described, except in so far as they are articularly claimed,it bein my intention to claim generically the sub ect-matter of the broader claims. r

While the spindlesshown are illustrated and described as being intended-for use inholding drills, s indles for holding other toolsmay be use in the same Way, and the term drill as used in the claims is used in a generic sense to comprehend any drill or other toolused in a spindle, or equivalent That which I claim-as my invention and desire to secure by Letters Patent is,

. 1. A machine-tool, comprisinga machineframe, a spindle carried thereby, a verticallymov able feed-table, end-guides-for said feedtable, carried by said frame, and an intermediate guide carried by said. feed-table and bearing against the. back of said machineframe. i.

v 2. A machine-tool, com rising a machine frame, a vertically-movable feed-table, endguides'for said feed-table, a vertically-adjustable work-supporting clamp carried by said feed-table, and a rigid guide-plate consaid feed-table and the back of the machine frame.

3. A machine-tool, com nsmg a machineframe, a vertically-movab e feed-table, endguides for said feedtable, a Vertically-adjustable work-supporting clamp carried by said feed-table, and a guide-plate connected with said clamp and extending above and below the same, the upper ortionof said guide-plate bearing against t e back of the machine-frame and the lower end portion thereof bearing against the feed-table.

4. A machine-tool, comprising a machineframe, a 1eed-table, a work-supportmounted 15 on said feed-table and ad'ustable vertically independently thereof, an a guide connected with said work-support, saidjguide projecting above and below said work-support, the

upper end ofsaid guide having a bearing 20 against the machine-frame and the lower end thereof having a bearing against said feed-table.

GEORGE R. RICH.

Witnesses:

J. P. .WARDER, O. PAULSON.

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