US263742A

US263742A - Drilling-machine

Info

Publication number: US263742A
Authority: US
Publication date: 1882-09-05
Anticipated expiration: 1899-09-05

Description

2 sheets-sheet, 1.

(ModeL) 0. WREN.

' DRILLING MACHINE.

, Patented Sept. 5, 1882.

fnz/e'nio 7",

UNITED STATES PATENT OFFICE.

CHRISTOPHER VVREN, OF PLYMOUTH, PENNSYLVANIA.

DRILLING-MACHINE.

SPECIFICATION forming part of Letters Patent N0. 263,742, dated September 5, 1882.

To all whom it may concern Be it known that I, CHRISTOPHER WREN, of Plymouth, in the county of Luzerne and State of Pennsylvania, have invented a new and Improved Attachment to Drilling Machines, of which the followingis a specification, reference being had to the accompanying drawin gs.

higurel is a top view, showing all the parts in position for operation. Fig. 2 shows screw 1) detached. Fig. 3 is an end view of screw I). Fig. 4 shows sleeve a detached. Fig. 5is a sectional view of sleeve a through the line D. Fig. dis a sectional view on the line A B. Similar letters refer to similar parts in all the views.

ais a tube or sleeve having slots 70 70 running lengthwise through it and bands 2' i around it. The bands't' 'i, the journals d d,

and the bevel-pinion 0 hold the parts of sleeve a together.

b is a plain screw of proper size to pass loosely inside of sleeve 11, having fixed pins m m in its ends.

'0 c are straight toothed bevel-pinions work-' ing at right angles into each other. a is fastened to shaft f, and c is fastened to sleeve a. Either of these pinions maybe made larger than the other, to give the proper speed to the drill and to adapt it to different kinds of work. 61 d and d d are journal-boxes in the frame e c e e, in which the sleeve a and shaft frevolve.

d is a threaded box, fixed when in i use, through which the screw 11 runs.

0 e e e is a frame fastened by means of posts 1) p to the body of the machine, and holding the shaft f and sleeve a in their relative positions.

f is the driving-shaft, to which the crank g is applied in operating the machine.

-0 is the twisted drill.

Application filed June 12, 1882. (ModeL) The base R shown in the drawings, and on which the model sits, forms no part of the machine, but is merely used to hold the parts in position to"sh0w them.

The machine is operated as follows: When the crank g is turned it revolves the shaft f and pinion c. This sets in motion the sleeve at by means of the pinion c and as the sleeve a turns it carries with it the screw b and drill o by means of the pins m m protruding into the slots is it. As the screw b is turned in the threaded box 01 it is drawn forward by the thread, the pins m slide in the grooves 70 It, and the drill 0 is fed forward into the coal or other substance being drilled.

Having fully described my invention, what I claim as new is-- The combination, in an attachment to mine drilling-machines for use in coal or rock, of the sleeve (1, having slots it cut length wise in it, and having a straight-toothed bevel-pinion, 0 fixed toit, the screw b, passing inside of sleeve a and having fixed pins min its ends, which protrude into the slots 70, the frame 0 e e e, having the journal-box d d and d d arranged in it, that the sleeve a and shaft fmzay rest and revolve in them, and the shaft f, having a straight-toothed bevel-pinion, 0, fixed to one end, and fitted on the other end to receive the crank g, witha screw-threadvd box, d, all substantially as shown and described, and to be applied as an attachment to drilling-machines to give motion toathe drill, and operating in a manner wherein the power is applied at right angles to the direction of the drill.

CHRISTOPHER WREN.

Witnesses:

WM. 'BEAcHAM, W. M. LEWIS.