US1272749A

US1272749A - Drill-extractor.

Info

Publication number: US1272749A
Application number: US19817317A
Authority: US
Inventors: Cortez L Wilson
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-10-23
Filing date: 1917-10-23
Publication date: 1918-07-16
Anticipated expiration: 1935-07-16

Description

C. L. WILSON.

DRILL EXTRACTOR.

APPLICATION FILED 0cT.23.1911.

1,272,749, Patented July 16, 1918.

CORTEZ L. WILSON, OF IBISBEE, ARIZONA.

DRILL-EXTRAGTOR.

, Application filed October 23. 1917.

To all whom it may concern:

Be it known that I, Con'rnz L. WILSON, citizen of the United States, residing at Bisbee, in the county of Cochise and State of Arizona, have invented certain new and useful Improvements in Drill-Extractors, of which the following is a specification.

This invention relates to devices for ex tractingdrills from rock and has for its object the provision of a device for the stated purpose which will be composed of few parts and will be, therefore, free of complicated constructions and arrangements. The invention also seeks to provide a device for the stated purpose which may be easily manipulated and which will be positive and rapid in its operation.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a perspective view of an apparatus embodying my improvements;

Fig. 2 is a view partly in side elevation and partly in section;

Fig. 3 is a section taken on the line 3-3 of Fig. 2.

In carrying out my invention, I employ a gripping member 1 which is adapted to engage around the drill 2, a fulcrum member 3 which is pivoted to the gripping member and is adapted to bear against the side of the drill, and an operating lever 4 which is pivotally mounted upon the bearing member 3 and is constructed with a cam or eccentric 5 which is adapted, when the lever is swung about its pivot, to bear against the side of the rock and thereby force the gripping and fulcrum members away from the rock, a pulling force being exerted thereby against the drill which will withdraw it from the hole. The gripping member 1 is essentially an elongated block having an opening 6 at one end through which the drill 2 may pass and provided at its opposite end with a notch or recess 7 in which the stem 8 of the fulcrum or bearing block 3 is pivoted. The head 9 of the fulcrum block extends laterally from the stem 8 and is provided with a groove 10 in its outer face which is adapted to fit against the drill 2, as clearly shown in Fig. 1. The operating lever 4 is pivoted at one end upon the fulcrum block by a pin or bolt 11 inserted through the stem 8 of the fulcrum block between the pivot thereof and the head 9, as shown most clearly in Fig. 3, and the eccentric or cam 5 is formed on the side of the I Specification of Letters Patent.

Patented July 16, 1918. Serial No. 198,173.

lever with its flat facebearing against the ject outwardly from the rock and the groove 10 in the head of said member will engage the drill so that the fulcrum block will be prevented from dropping. The operating lever will stand upright and against the face of the rock as shown in Fig. 1, and it will preferably be provided with a longitudinal bore or socket 12 in which may be engaged the end of a long bar or rod so as to increase the leverage and the force which may be applied. The lever is then swung downwardly so that the peripheral face of the cam or eccentric 5 will ride against the rock thereby forcing the pivot bolt or pin 11 outwardly and consequently causing the fulcrum block and. the gripping member to bind firmly against the drill so that it will be caused to follow the outward move ment of the fulcrum member and the gripping member and will be thereby withdrawn from the hole in the rock. Should a single movement of the lever be insufficient to fully extract the drill, the lever may be returned to its upright position and the device slid along the drill until it bears against the face of the rock after which the lever may be again swung downwardly and this operation may be repeated until the drill is fully withdrawn.

My device is obviously simple in the constrnction and arrangement of its parts and may be produced at a very low cost. It will be found highly efiicient inoperation for the purpose for which it is designed, and is not apt to get out of order and become inoperative.

Having thus described the invention, what is claimed as new is:

1. A device for the purpose set forth comprising a gripping member, a fulcrum member pivoted thereto, said gripping member and said fulcrum member being adapted to engage a drill, and means mounted upon the fulcrum member for imparting a longitudinal movement to the gripping member and the fulcrum member.

v 2. A device for the purpose set forthcomprising a gripping member adapted to en: gage around a drill, a fulcrum member extending from the gripping member and adapted to bear against the side of the drill, and an operating member carried by the fulcrum member. 7

3. A device for the purpose set forth comprising a gripping member provided at one end with/an opening to receive a drill and provided with a notch at its opposite end, a fulcrum member pivoted within the said notch and adapted to bear against the side of the drill, and an operating member mounted upon the fulcrum member.

4;. A device for the purpose set forth comprising a gripping member provided at one end with an opening to receive a drill and having a notch at its opposite end, a fulcrum member having a stem pivoted within said notch and a head extending laterally from the stem to bear against the side of the drill, and an operating member mounted upon said fulcrum member.

5. A device for the purpose set forth comprising gripping member, a fulcrum member pivoted to the gripping member, and an eccentric pivotally mounted upon the fulcrum member and having its plane face opposed to the side of the fulcrum member.

6; A drill extractor comprising a gripping member to extend at an angle to the drill and provided at one end with an opening whereby to receive and fit around the drill, a fulcrum block pivoted at one end to the end of the gripping member more remote from the drill and provided at its free end with an offset to bear against the drill, said offset having a groove in its face to engage the drill, and a cam fulcrumed upon said block at the side opposite the offset and the gripping member, said cam having its plane face arranged parallel with the fulcrum block and its peripheral edge pre sented to the body in which the drill is set.

In testimony whereof I aflix my signature.

CORTEZ L. WILSON. 1,. 5.

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

- Washington, I). 0.