US963317A - Drill. - Google Patents

Description

G. H. OSLUND.

DRILL'. PrLIoATIoN FILED mxo. 4, 190s.

Patnned July 5, 1910.

the clutch operating means can be used inprovided with a spring 26 for normally 80 SATESA 'CHARLES H. QSLUND, 0F WORCESTER, MASSACHUSETTS.

DRILL. 963,317. Specification of Letters Patent. Patented July 5, 1910,

' Application ined December 4, 190s. serial No. 465,969.

To all 'whom it may concern.' ing the tool 18. In view of this construc- Be it known that I, CHARLES H. ,OsLUND, tion it will be seen that when the shaft 12 a citizen of the United States, residing at -is rotated the member 17 and its tool will be orcester, in the county of Worcester and rotated also. On the -sleeve 15 is fixed a State of Massachusetts, have invented a new gear 20 meshing with a second gear 21. 60 anduseful Drill, of which the following is This gear is adapted to rotate a third gear a specification. 22 which meshes with a fourth gear 23. This invention relates to drills. |The gears 21 and 22 are inclosed 1n a cyhe principal objects thereof are to prolindrical chamber in the casing parallel and vide a construction in which the driviner communicating with said passage. The 65 and feedingmechanism for the drill will be gear 23 is mounted on a shaft 24 having a conveniently and compactly located in a screw thereon so as to rotate the latter, and small, strong casing; to provide simple and this screw which is preferably left-handed convenient means therein whereby power engages left-handed screw-threads located can be transmitted4 to the drill either by on the cylindrical member 17. It will be 7o hand or machinery; to rovide means seen that when the parts are connected up as whereby the drill can be fes automatically indicated the rotation of the shaft 12 not or by hand independently of its rotation and only rotates the member 17 and the drill 18, the change can be ina-de in a very simple but through the gears 20, 21, 22 and 23 and and convenient manner; to provide a clutch screw 24 these parts are fed longitudinally. 75 operating means for disconnecting the auto- In order to provide means whereby the matic feeding device from the rotating feeding connections can be thrown out of means capable of manipulation in a very operation the gears 21 and 22 are provided simple manner; lto provide means whereby with clutch teeth 25, and one of them is dependently of the rotating connections, for forcing the gears and clutch members apart. feeding the drill while it is being rotated In the form shown in the drawing, this by independent means so that the drill can spring 26 forces the gear 21 to the right, the be rotated by power and fed by hand withgear 22 in this case being shown as not movout involving any complicated rearrangeable longitudinally, but as beingprovided 85 ment of parts. with a hub 27 journaled in the casmg. The Further objects and advantages of the gear 22 rotates with the shaft 28 being proinvention will ap ear hereinafter. vided with a sliding .key 29. The gear 2l Reference is to e had to the accompanyfreely rotates on the shaft' 28l but moves loning drawing in whichgitudinall with it as said shaft has an en- 9'0 Figure 1 is a longitudinal central seclarged en 30, which engages the gear as the tional view of a drill constructed in accordshaft moves to the-left. The shaft extends ance with this invention, showing a clamp through the hollow hub 27, and is provided therefor in elevatlon. Fig. 2 is a similar with a post 32 on the outer end thereof. sectional view on an enlarged scale showing On this post is pivoted a cam 33' adapted to 95' gearing; and Fig. 3 is a slmilar View showengage a collar 34 on the end of the hub 27. ing the parts at the extreme left of Fig. 1. By operating a handle 35 which is fixed to The drill lis shown Vas comprising an inthe cam this cam can` be moved into the posiclosing casing 10 having a sleeve 11' extion shown in the drawing, in which case the tending therefrom and formin a bearing shaft 28 is caused to be pulled to the left 10c for a power shaft 12. This s aft can be taking with it the gear 21 so that the clutch operated in any of the usual ways by hand teeth will coperate and power will be transor by power and is shown as provided with mitted. If however, the handle 35 is pulled a bevel gear 13 inside of the casing meshdown so that a lug 36 thereon engages in a ing with a gear 14 on a sleeve 15 for rotatnotch 37 in the casing, the ca m will be 105 ing the latter. The sleeve 15 is journaled rendered inoperatlve and the sprmg 26 w1 ll in a longitudinal cylindrical passage in the force the gears apart. In the latter case 1t casing andis provided with a sliding key will be obvious that there is no feeding connection 16 for a hollow cylindrical, motion transmitted to the screw 24 from the longitudinally movable member 17 for holdshaft 12 when it rotates. The parts are so 110 d that the lug 36 can' loe withldiiiiivtfgdih the notch 37 and the handle 3 5 rotated on the axis of the shaft 28. This car 22 to rotate independently gautsl dissi-S321, and in this case the drill can be fed :forward or drawn back independently 0f the rotation of the shaft 12. If 1t is de` Si'red to gain speed "or power between the shaft 12 and the member 17 the number of teeth on the ears 20, 21, 22 and 23 can vary Slightly, `tha is, each one of these gears can have one tooth more er less than the next one." y

For the purpose of changing. the speed of feed, the screw 24 can be provided with a sliding ke 40, and with a fifth gear 41 located at t e side of the gear 23, This slid,- ing key is adapted to connect either one of these two gears with the screw, and one of them is provided with one more tooth than the other which can be done although both of them mesh constantly with the gear 22` his speed changing device however, can be omitted. The screw is shown in the present case as provided with ball-bearings 42 at the end bearing rigidly against the inside of the casing and constituting an end-thrust bearing in the casing.

The sleeve 11 which projects from the casin and which is supported thereby, or

lich the easing can be supported, is employed for the .connection of the casing with a clamp. For this purpose a bar 45 1s secured to the sleeve by means of a bolt 46 or thelike. This bar is provided with a 'screwI-thr'ead `47-on which an adjustable 48 is mounted and adapted to besecured b a bolt 49 or the like. On the opposite en this bar is turned down and provided with a screw-thread 50 on which a nut 51 is adjustabl mounted. This nut has a pivot 52 for a ever 53 which is provided with a cam surface 54 engaging a projecting bearing surface 55 on a slidlng jaw 56. 4It will be seen that` when this lever is brought down the cam surface 54 will exert a pow'rfulforce uponeitA to clamp the work between the two jaws. It will be seen also that the jaw 48'can be adjusted b turning it on its screw-threads, and that the nut 51 also ,can be adjusted forward and back. When the lever 53 is lifted to bring it back to ino erative position the sliding ]aw 56 is broug t back with it by means of a link 57 thereon havin a slot 58 through which a pin=59 on the ever passes.

V The operation of t e invention will be obclamping 4jaw vious vfrom what has been stated concerns 1n the same.

hile I have illustrated and described a preferred embodiment of the invention, I am aware that many modifications. may be made there1n by anyperson skilled in the art without departinrrom the scope of the invention as expresse l in the claims. Therefore I do, not wish to be limited to all the `l features of'construction shown, but

What I do claim isz- 1. In ahlaohine of the character described, the combination of a rotatable sleeve, means for rotating said sleeve, a tool-holding device, means whereby the tool-holding device is rotated when the Sleeve is rotated, a gear rotatable with the sleeve, a second gear meshing with the first, a shaft, a third gear on Said shaft, means for connectin the second gear with the third gear an for die connectn it therefrom, a fourth gear meshA ing with t 1e third gear, a screw with which the fourth gear is connected, means; on the tool-holding device for engaging the screw, said fourth gear being loose on the screw, a fifth gear on said screw having a different number of teeth than the fourth gear and meshing with the third gear, and a key forconnecting either the fourth or ifth gearwith the screw.

2. In amachine ofthe character described, the combination of an inclosing casing llav-l ing a bearing at one end, a tool-holding device, means inclosed in the casing for rotating the tool-holding device, a member rotatable with the tool-holdin device, a gear,

` means whereby the tool-hol ing device will be rotated by the gear, clutch members 1nclosed in the casing near said bearing for connecting the gear with the rotatable meub ber, a cam pivotally mounted on the outside of the casing at the end of said bearing for forcing the clutch members together, and a handle located on the cam for operating the cam, said handle being connected with the. gear in all positions thereof whereby when the handle is turned to a position to disengage the clutch, the handle can be rotated to rotate theV gear and feed the drill-holding member.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing wltnesses.

CHARLES H. OSLUND. Witnesses:

ALBERT E. FAY, C. Fommsr Wesson.

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