US76189A - Improved stone-drilling machine - Google Patents

Description

Levi HneMANoE,-OF 'HUD-sow, N-EwfYoR-K,"

Letters Patent No. 76,189, dated .Marek 31, 1868.

IMPROVED STONE-DRILLING MACHINE'.

site tthiilt referat tu in tiges: tttets nttiit mit mating gattini tlgrsame. v

TO ALL WHOM 11F-MAY CONCERN:

Bei-t known that I, LEVI HERMANGE, of Hudson, in Lhe county of Columbia, and in the State of New vYork, have invented new and useful Improvements in StoneDrilling Machines; and do hereby declare that thefollcwing is a full, clear, and exact description thereof, reference being had tothe accompanying'drawings, andto the letters of reference marked thereon.

In the annexed drawings, making 'part of this specification, A and B represnnttwoframes, which consist lof sills placed parallel to each other, and suitably framed together. l The frame'B acts as afoundation for frame A, and for the machine, and is intended to lie upon the ground or oor,or wherever-the machine may beplaced. This frame-B is provided on 'two sides with the `metallic plates C-C. Each of these plates is provided with a circular or curved slot, D,'and at 'stated'vintervals in4 this curveare formed the'recesses e e. l Trunnion-bcarings 'are also formed in the upper, edges of these plates. Projecting from the sidesof the'frame A, at a vshort distance from its lower end, are the trunnions a,.\vhich rest in the bearings in the plates G- C. Bolts ww pass through the sills of the V frame A, at their lower ends, and then through the slots inthe plates C C, resting in oneioi` the recesses e e. The frame'A may by these means be set at any desirable angle to frame B bysmply removing bolts tv, then. trning the frameA to Vthe desired angle. and again replacing the bolts to 'secure it in the desired position. i

H represents a-s-haft, which lies crosswise of-trame A, and having its bearings in the sills of .said frame. This shaft is provided at each end with the crank-handles I I, and near its centre with the tvo balance-wheels E E. These wheels have 'three or more pins secured in their inner faces, and equidistant apart, and upon these pins are'placed the small grooved wheels s s, thepurpose of which will be hereinafter described. Y

F represents the drill-shaft, which may be of any convenient length and size. This shaft has a screwthrcad out upon it, above its centre, and passes through a long sleeve, J, which has also a screw-thread eut vin it to correspond with the threadon the shaft. This sleeve has lon-g` groove in' one side of it. represents a haud-wheel, which-surrounds the sleeve J, and has passing through it a pin, "a, whchenters the groove in the sleeve, andstations it with said sleeve. This hand-wheel is placed betweenithe two cross-pieees G and G of the frame A, and when it is turned in'one directioncauses the sleeved,l by means of its thread, to lower the shaft F.. The shaft is raised of course by reversing the moti-on of this hand-wheel. Depending fromithe under side of the cross-piece G'are two slotted guide-supports u..

T T represent two metallic bars, one end of each of which is'connected to one of the plates @t by means of a pin, which passes through 'the slot in'said plate. The other ends of these bars are pivoted to the lower' end of the sleeve J in any suitable manner. Thebars TAT are so situated with reference to the groovedwheels' upon the balance-wheels E, that when the balance-wheels revolve, the groovcdwhecls as catch under said bars, and elevating them a. certain distance, suddenly pass from under them, These bars bein-g connected to the sleeve, and the drill-shaft moving with said sleeve, of course. the drillshaft Yrises and-falls at cach rise andfall of thebars T T, thus giving three orv more strokes to the drill at each revolution of the wheels E. A rotary' motion is given to the drill during its work by means of a pawl, which catches into the teethof a ratchet-wheel upon the drill-shaft, near its upper-end. d

P represents the ratchet-wheel, and M a bar, which has connected toit a spring-pawl, R. When this bar moves in one direction, the pawl'catohes in the teeth ofthe wheel Prandlgives, it a partial rotation. The bar" 'lies crcsswise of thc frame-A, and has motion given to it by means of a spearshaped arm, N. This arm N is` connected to a. cross-head, a', and this cross-head isconnected to the upper end of sleeve J. Whenvthe' sleeve and drill rise, the urm N strikes against a lng or projection on the vbar M, and gives it an endwise movement, and when the arm descends, a spring, o, forces the bar back to its original position, so that its pawl will take fresh hold on the teeth ofwheel P.` Thus it will be seen that, while the drill-shaft is being given an endwise movement, it is also given a rotary movement. p

I am aware' thatthesemovements have been given to the drill-shaft before, but not bythe devcesvherein before described. A spring, L, surrounds the drill-shaft for forcing it downward after it has `been elevated by the bars T T. g represents a-gauge-plate, which is. provid-ed with a long slot, through which passes a screw-to cantine-it to one of thc sills of 'thei frame A.. ,Thisgauge can, by means of the slot and screw, be extended so a's always to readily indicate the depth of hole which the drill has made. Inches and fractional parte thereof zufemarked upon the face of the gage. The lower end of the drill-shaft. Works between two grooved Wheels o '11,'. which act as guides und'brnces for it', always keeping it in proper position.

Having thus fully described -my invention, what I claim es new, and desire to secure by Letters Patonis- Il. The, arrangement of the slotted plates 'il-1u, connecting-bars T T, and sleeve J, incombinntion with th'e wheels E E; having groovfed pulleys s a on their inner faces, thewholearnged and opeating substantially as specified. i 4 I 2. The combination'of the frame A and itsbolts zo w with the platesC C, having trunnon-berings, cnrved 4slots D and recesses e-e e, whereby-the frame A may be `placed atvany angle with the frame B, as speciferL In testimony that I claim the foregoing@i have hereunio set my hand, t'liis 11th day of February; 1868.

LEVI HERMAN UE

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