US1104110A - Drill-extension device. - Google Patents

Description

H. J. PORSTER. DRILL EXTENSION DEVICE. APPLICATION IILED SEPT. a, 1913.

Patented July 21, 1914.

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fimmiy m E H 1 1 I a M w 1 r m: w f. A. 3 ,2 A11 1 1 WW F W j J 1 m To all whom 'Ztmay concern:

;of Illinois, have a device which may which a ratchet drill,

.ject of this invention is Fig.

DRILL-EXTENSION DEVICE.

Be it known that I, HARRY J Fons'rER,

a citizen of the United States, and a resident in the county of Cook and State invented certain new and useful Improvements in Drill-Extension De vices, of which the following is a specification.

This invention relates to be used with drill extension telescoping tubes now known and used in the art in boilers and other like places, for drilling holes to which access by other means, is difficult. i v

' One object of this invention is to obtain be readily attached to and detached from one of said tubes.

' A further object is to obtain a device to or a part thereof, may

of Chicago,

to adevice designed be applied.

A further object is. to obtain a device which, when attached to a drill, extension tube, may be used to hold an end piece, a drill, or other cylindrical device or tool.

A further object is'to obtain a device which can be used for the purposes above will be durable, not liable break, and the applinamed and which to get out of order, or cation and working whereof will be readily understood by drill operators. p

In drilling holes underneath boilers and other devices, it is at times convenient to have the drill ratchetinterposed. between the extension tubes and the drill, and at other times it is convenient to have the extension tubes interposed between the drill ratchet and the drill, and theprimary 'obto obtain a device which is adapted to' permit either of said arrangements of the drill andrextension tubes. v

In the drawing accompanying and forming a part of this specification Figure l-is a vertical section of the shell of the device, viewed as indicated by line 1, Fig. 2. Fig. 2 is an elevation of a modification of the construction illustrated in Fig. 1, at an angle of ninety degrees from said Fig. 1. 3 is a top plan view of the upper end of the shell which is illustrated inFig. 2,

showing saidmodification. Fig. dis an elevation of the upper 'end of the shell which is illustrated in Figs. 2 and 3, viewedat an And Fig. 5 is a vertical endof the shell illustrated inFig. 1,

ing wherever .Bolt hole C is screw threaded at C v is substituted. for

angle of. ninety degrees from said Fig. 2. section of the lower showing a modification of said lower end. i

A reference .character nate a given part indicates said 'part throughout the several figures of the drawthesame appears.-

TED STATES PATENT onnicn.

' HARRY J. FORSTER, OF CHICAGO, ILLINOIS. I v

applied to desig- I A is a cylindrical. shell, provided with passage way of more than one diameter therethrough. Parts" o of said passage way are of the same diameter, being substantially the same diameter as the outside diameter ratchet; part a is of less diameter than part a; and part a is of substantially the same diameter as the larger one of the several telescope tubes which form the ratchetextension used with this device. The diameter of .parta is substantially the same as'the diameter of the feed screw of a drill ratchet.

B is a slot in the upper end of shell A, and O is a bolt hole at right angles toslot B. Dotted 1), indicate be inserted in corresponding (or broken) lines D, (Fig. the head of a belt which. can hole C, to extend through holesin the tube, or tubes, on which said shell is to be secured. The shell is clamped to said tube, or tubes, by turning said bolt (D), so that-thescrew threads thereon engage with the screw threads 0 prevent tubes X and Z from turning, and 2, to clamp shell A closely. to said tubes. holes referred to in tubes X,

Z, are lettered Z, in Fig.1.

The drill rods, as they are termed iii-the art, to which this device is attachable, often consist of telescoping tubes, so that said drill rods may-be lengthened, when required.

of the feed sleeve of a' drill (X, Z, Fig. 1),

The 7 Bolt D has two functions, 1, to p In Fig. 1, X and Z illustrate one end of a I drillrod made of telescoping tubes, and said 1 tubes are shown as telescoped.

In the modification of above described construction of shell A, (illustrated in Figs. 3' and a thehole C is not provided with screw threads .at either end, and a pin, D bolt D; lugs or ears Eare provided-on the shell A, and bolt D is inserted in holes in said ears. The hole in one of said ears is screw threaded (see 0?}, Fig.

7 pin D l) with threads corresponding with those on said bolt D and pin or bolt D is the same as the function of bolt D; that is, D prevents turning or longitudinalmovement of a tube having its end inserted in the shell, D clamps said shell closely to said tube. In

this construction the pin D is provided with a groove F, in which groove pin or bolt f is yieldingly held by the spring G. g 'is an abutment on the hole therethrough inwhich'the pin or bolt f is longitudinally movable.

is provided with the head f which is retracted when it is desired to draw pin D "out. In this'modification the pin D is inserted before the boltD is tightened to clamp the shell A to the tube or other devicewhich is inserted therein. Bolt D and pin D respectively, are-used to that the rotation of thetube in the shell A and of said shell will be in unison, that is, without slipping.

By detaching theupper end of shell A from the remainder thereof I find said upper'end, in either of the constructions shown, may be used to secure telescoping tubes firmly together, provided, of course, both said tubes have holes whichare in alinement so that the bolt "D or pin D may be inserted therethrough. (heated in Fig. '1 by lines X and Z, while a single tube is illustrated in Fig. 2 by full and broken lines The lower end of shell is provided with the abutments or cars I-I, one of whichis "other of which 7 slot.

provided with a screw threaded hole and the other with a hole,

make it certain the bolt (See j, Fig. 1.) 1

7' are handles which'extend through bolts said bolts are turned to cylindrical device on placed.

In Fig. 5 W is a screw threaded shaft corresponding with the ordinary screw threaded shaft of a ratchet drill andK a sleeve in screw threaded connection with said shaft W. II is a pin to rigidly secure shaft 'I/V' to the shell A, to turntherewith. L is the; end of the ratchet drill which is obtained by shaft V? and sleeve K, in combination with ratchet wheel M and handle N. A screw threaded sleeve corresponding with sleeve K1 "is in ordinary use in drillratchets, and the ordinary fe' clamp shell A to the which "said shell is ed sleeve of said ratchets is secured to the screw threaded feed shaft "thereof by a pin in substantially the same; manner in which pin 7V securesshaft WI "to shell A.-

The combined function of.

shell A provided with a:

Pin or bolt f' by means of Two of said tubes are in-;

on one side of slot I and the is on the other side of said One of the abutments or ears H is through which holes the.

bolt J is extended with the screw threads on and in said hole in engagement} and J, respectively, by means of which,

'VV (Fig. 1), are lines which indicate a button inserted in passage way a to close said passage way, and to form an abutment against which the center bearing of a ratchet drill will be forced in the operation of the device; Where the end of tube X is closed the button W is not required as said center bearing abuts against said closed end of tube X. t

It will be observed that the annular rib forming the cylindrical wall of part a of the passage way through shell A, presents on the faces-thereof abutments, or annular tables against which the ends of the tubes X and Z, and the flange on button W abut, and by means of which the further movement of said parts in said passage way is prevented.

I claim p 1. A shell provided with a cylindrical passageway of more than one diameter extending longitudinallytherethrough the part of said passage way which is of Smallest diam- "eter obtained by means of an annular rib with tables on the faces thereof adapted to form abutments, and said shell also provided with longitudinally extending slots open at the ends of said shell, lugsontsaidshell, adjacentto said slots, said shell and lugs provided with laterally extending holes and laterally extending screw threaded holes, in combination with screw threaded bolts to fit said holes and the screw threads thereon to engage with the threads in the screw threaded holes, said holes and bolts therein arranged to contract the slotted portion of said shell on to a cylindrical article contained therein at 'each'end thereof. 2. A shell provided with a cylindrical passage way of more than one diameter extending longitudinally theiethrough the part of said passage way which is of smallest diameter being obtained by means of an annular rib with tables on the faces thereof adapted to form abutments, and said shell also provided with longitudinally extending slots open at the ends of said shell, adjacent to said slots, said lugs respectively provided with laterally extending holes, in combination with a bolt provided with an annular groove, said bolt adapted to extend through said laterallyextend'ing holes, means to contract the slotted portions of said shell on to the bodies contained in said cylindrical passage way, an abutment on said shell, a longitudinally movable pin in said abutment, and means to yieldingly hold said pin in an advanced position to engage with said groove in the bolt which is in' the laterally extending holes and adjacent to said pin. I

3. A device comprising a shell provided with means to contract said shell on to bed ies "contained therein,-and provided with lugs on said shell, said shell and l holes extending through the wall of said means to yieldingly hold said last named shell, the combination of a pin or bolt adaptbody 1n an advanced position with the end ed to extend through said holes in said Wall, thereof in said annular groove and said pin or bolt provided with an an HARRY J. FORSTER. 5 nular groove adjacent to one end thereof, In the presence ofv with an abutment on said shell, a longitu- CHARLES TURNER BROWN, dinally movable body in said abutment, and CHARLES B. HEBRoN.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. 0."

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