US1543765A - Drilling machine - Google Patents

Description

June 30, 1925.

G. H. GILMAN DRILLING MACHINE Filed July 30, 1921 2 Sheets-Sheet l v 47 y v June 30, 1925. 1,543,765

G. H. GILMAN DRILLING MACHINE Filed July 30, 1921 2 Sheets-Sheet 2 Patented June 30, 1925.

GEORGZWHI GIIIIYIAN, OF. BELLMONT', MASSAOHFUSETTSJ DRILLING At ncatimr filed July so,

TQaZZ "'w/z can it map; 006 2060792 Be it hnown-i that I; Gnonen Hi Grimes. at citizen of: the-Unitech StitilfiS-gyfllld i roSi=- dent otjBelmont, county; of lMiddlesex and State of Massachusetts, have inventeda an improvement in Drilling Machine, of which the 1 following; description, in connec-e tion withthe accompanying drawings, is: as specification,like: characters on the drawingszrepresenting like-parts, 7 I My. invention..-relates 1to.drillingi.machines andparticularly. to the mounting for; the drilliirg-., tool-1 and? itsaactuatOr. I v

'Myainventionwwill; be bestnnderstood; fromthe following description when; read; in light of the accompanying drawings of. specific: embodiment of my. invention see lected for, illustrative nu1poses, whilethe scope of my invention will be particularly pointedmut in the appended. claims.

- Referring tot-li edrawingsz Eigz. 111 is an: elevation of: a breast-3 stoper and its: mounting; constructed according .to my. invention; v

Fig; is a detaillonpan enlarged, scale of.

' pnrts sliowlrbytFig,1-when[moved-.to another position; I

Fig is' a, sectio nonxthe line 3+3: of; 's 1; w I

Fig. 4-is a plan of thebase membergjand, Fig; twists seotionionthe mete-5 of Referring to. the drawings, lflhave shown drilling; tool Q 1 and its, actuator 3. t These inayvb'e of any. suitable or usualrtyp euand as shown-.the'toolvis a drill :bitandthe actnf ator. afinid pressure operstedhannner. drill: The mounting fort the. actuatorcomprises feeding; mechanism for. moving the actuator. toward. and away tiom;-the. work, and elevating and swivelling connection to a support, for the machine. .1 v The feeding. inec'hanisnrfor the. actuator comprises the shell 5. having. to rmed therein the. oppositely located. gnidewaysj 7" winch receive. tlieactuator guide menihersfi and although the latter may lie-formed" 111-. tegrally or otherwise. with ;the (ca in of the actuator I. have shown them as, part of the, cradle '10, .to the ears- 11, ofiwhich; theactue ator 'is. secured" by. means ot'th'e actuator 7 side bolts. 12,,. For moving the actuator back. andv forth along th'e ways any suitable or usnahmeans,may be provided, aster example, a teed screw, the hiindle -of"wnich is indicated." at, 131." As the-details of the MACHINE;

19.21. Seriaiiito. 188;5961;

actuator: and feedingmechanisnt do not form 1 part of my present invention, the same willnot be furthen described except. as necessary. to show how they are apnlietl' to l the.-

like bevelled surface 17? Resting against;

the bottom ottheshellisa member 19hoving, the upstanding portion. conforming tothesuriace. 15 of the shell. Aitthe side: of the member 19, and; new the surftice. 1'?" of the shell, I tt'brnr saitlanemher. with it bevelled surface 25. oppositely inclined; to thesurface 17. and for, engaging both of, these surfaces. I provideannemlier 25-01" length. approximatingthat of} themember 19 andsecnred theretohy means of a bolt 27. As w-illhe apparent when the bolt is loose the members 19. and 25 ma v be slid longitudinally. of the shell to the positiondesired and. then clamped in place by tights ening theboltr.

o For. attaching the elevatinggmechanism.to' the member 19 I integrally form with the; lowermostsiderofithe member 19 four perforated lugs 29, through pairs of which-pass; the. holtsor pins 31. On; the outer end-0t eachibolt lpivot-onvend ofa link'33. The other, ends of the; linksl pivot to similarly arranged holts 851carried in the perforated lugs, 36 formed; integrally with thebase member 37. 1 These pivotedflinks"constitute the. eli'eveting}mechanism.v

The body oi" the base member. 37 I- have shown formed as a hollow cylinder. From the upper onterusurface of this cylinder diates the arms 38 carryingithe"lugs .36 and on the lower end of the cylinder-I form if desired a flange providingthe frusto.-coni-' cal surface 39 serving as a trunnion. The trunnion may besecuredto any suitablesupport ior the. machine As shown, this'support is exemplifiechby the arm ll carried-by a" mine column. Forattaching'the trune niointo the arm 41 Ihave shown a known attaching means wliiclrcoinprises the members i3'and45 adapted to be clampedlin tlCl-I jnsted position tov the baipby means of bolts 45?. The member 43' is provided'with a recess i9fconforming to about 180"oijthe irustoronical' surface. of. the trunnion and has pivoted thereto at 51 a member 53 provided with a surface 55 shaped to engage the fru-sto-conical surface of the trunnion and adapted to be adjusted relatively to the member 43 by means of the nut 57 and bolt 59. a As will be understood by those skilled in the art, by this attachment thetrunnion may be swivelled relatively to the bar 41 and clamped in adjusted position. 7

It will be understod that by means of the four links 33'the shell may be moved toward and away from the base 1nember,Figs 1 and 2 respectively showing the extremes of movement.

I provide each of one pair of the arms 88 with upstanding portions 63 on which the member 19 is adapted to rest in the position 7 of parts shown by Fig. 2. Preferably, but

' not necessarily, the links 33 are of'equal length and the pins 31 and so arranged 'as to lie at the corners of a parallelogram in order that when the shell is raised and lowered every posit on assumed by the actuator and drill bit willbe parallel with all other positions assumed.

For operating the elevating mechanism I have shown a lever 65 formed integrally .with one of the links 33 and provided with a handle 67. For holdingthe'partsin their adjusted position relatively to the base I provide a quadrant-bar 69 carried on arms 71 secured by welding or otherwise to the projections 73 and 75of one of the arms 38.

' To the quadrant-bar I may clamp' the lever and for this purpose I provide the lever adjacent the outer side of the bar with a lug 77 through, which passes the pin 79 engaging the bifurcations 81 of the clamp 83. The bifurcations of the clamp adjacent the pin 79 are integrally connectedto the oppo site end portions of the jaw 85 which is adapted to grip the bar 69 and to clamp it betweenthe jawand the lever 65'. For actuating the clamp, the end thereof remote from the pin 79 is provided with a screwthreaded perforation 87 receiving the screw 89, the end of which engages the surface of the lever 65. Turning of the operating handle 91 of the screw in the proper direction will causethe lever 87 to be forced away from the lever and this willcause the aw to grip the quadrant-bar. 'Io permit assemblage of the clamp on the lever 65 the handle 67 maybe either welded tothe lever For supporting the shell when the 3 parts are in the posltlon shown by Fig. 2

which the parts may be moved into the po- .sition shown by Fig. 2 to permit the'bit be am notlimited thereby to its particular details and arrangement of parts and that wide deviations may bemade from this embodiment and parts described omitted or other parts substituted therefor without departing from the spirit of my invention.

1. The combination'with a drill steel actuator of a support therefor comprising a base and a pair of links, means providing a pivotal connection" between each link and saidractuator and base, the four pivots thus 7 formed being arranged to lie at thecorners of a parallelograni, and to swing-in a plane 7 parallel to the axis of the drill steel so as, to raise andlower-the actuator and move it toward and away from the work, a lever for operating said "links to cause them to swing for moving actuator, and releasable locking means for preventing movement of saidactuator. i

2. I11 a machine of the character (le scribed, a drill steel actuator, a trunnion support, parallel motion means for swinging said actuator in a plane including its 1 axis, said means includ ng a link, means providing a pivotal connection between said link and said support and betweensaid link and said actuator, a lever rigidly secured to said link for swingingsa'idlink, and releasable locking means for preventing, move ment of'said actuator. V

3.5 In a 'machine of the character described, a tool, its actuator, a feed shell, 21 trunnion support, a pair of equal links pivoted at opposite ends respectively and secured to said shell and support, a lever carried by one of said links, a quadrant-bar carried by said support, andmeans for se curing sald lever to said bar. 7

4. In a machine of the character described,'a drilling-tool, its actuator, a feed shell, a' trunnion support, a pair of equal links pivoted at opposite "ends respectively and secured to said shell and-support, a lever carried by one of saidlinks, a quad: rant-bar carried by said support, and means for clampingsaid lever in adjusted position along said bar. j i 3 V 5. In a 7 machine of the characterdescribed, a tool, its actuator, a feed shellfa support, for said machine, a pair of equal links pivoted at opposite ends respectively and secured to said shell and support, a lever carried by one of saidlinks, a quadrant-bar carried by said support, and means i hammer drill carrying said drill steel, a feed shell slidably supporting said hammer drill, a support for said machine, a pair of equal links pivoted at opposite ends respectively and secured to said shell and support, a lever ope 'atively connected to one of said links for -aising'and lowering said hammer drill relatively to said support, and means for adjust-ably securing said lever to said support. t

7. In a drilling machine, a drill steel, a hammer drill carrying said drill steel, a feed shell slid-ably supporting said hammer drill, a support for said machine, a pair of equal links pivoted at opposite ends respectively and secured to said shell and support, a lever operatively connected to one of said links for raising and lowering said hammer drill relatively to said support, and means including a member attached to said support and slidably connected to said lever for adjustably securing said lever in difi'enent positions.

8. In a drilling machine, a drill steel, a hammer drill carrying said drill steel, means providing a pair of pivoted links with a lever attached to one. link, feeding means slidably supporting said hammer drill including a member to which one end portion of each link is pivoted, a support for the machine including a member to which the opposite end portion of each link is pivoted, and means including a part attached to one ol? said members and slidably connected to said lever for adjustably securing said lever in different positions.

In testimony whereof, I have signed my name to this specification.

GEORGE H. GILMAN.

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