US1057732A

US1057732A - Rock-drill.

Info

Publication number: US1057732A
Authority: US
Inventors: Charles C Hansen
Original assignee: Ingersoll Rand Co
Current assignee: Ingersoll Rand Co
Priority date: 1911-08-08
Filing date: 1911-08-08
Publication date: 1913-04-01
Anticipated expiration: 1930-04-01

Description

G. G. HANSEN.

A BOOK DRILL. APPLICATION FILED AUG. 8, 1911.

1,957,732, 7 Patented Apn 1, i913.

unini) STATES ,a'ra a r arson.

estates 0. fiansnit, casserole, rnnNsYLvANm, ASSiGNDIt 'romonnsoaL-aeun contra-NY, or new roan, N. Y., a oonronarron" or unevenness.

Specification of Letters Patent.

1 ROCK-DRILL.

Patented Apr. t, 1933..

Application flled'August 8, 1911. Serial 170. 643,006.

of Easton, in the county f Northampton and State of Pennsylvania, have invented a new and useful Improvement in Rock Drills, of which the following 1s a specification.

This invention relates to rock drills and is directed particularly to the construction of the drill bit and themeans connectlng it with the rock drill.

In the accompanying drawings, Figure 1 represents part y in side elevation and partly in. section so much of a rock dr ll, drill bit and connecting parts as will give a clear understanding of the several f eatures of my invention. Fig. 2 is a transverse section taken in the plane of the line AA of Fig. 1, and Fig. 3 is a transverse section taken in the plane of the line B-B of Fig. 1.

The drill bit is denoted by 1, which bit is herein shown as removablv secured in the lower end of the drill stool Q- by providing- -chuck.8 of the work piston rod 9 of the rock drill. An axially arranged vertical passage 10 is formed in the drill bit 1, from which passage one or more holes 11 lead outwardly toward the cutting edge of the bit. A check valve 12 is provided for this passage 10, which check valve is herein shown as located in the socket 3 between the upper end of the bit and the bottom of the socket. An axially arranged passage 13 leads through the drill steel 2, the bottom of which passage opens into the socket l and the top of which passage opensinto the socket 6 in the shank 5. This shank 5 is provided with one or more laterally ara shoulder 16 on the shank 5 and the bottomof the chuck 8, which apron extends down- .wardly beyond the holes 14 in the chuck for deflecting the water and material pumped upwardly from the drill bit down along the steel. In the resent instance, the depending portion of the apron 15 is provided with a flaring socket 17.

In operation; the bit with its steel is re ciprocated in .the usual manner by the rock drill and water is supplied to the hole being drilledin the proper quantity. As the drill is operated, the material out by the drill bit is forced, together with the water, upwardly through the holes 11, passage 10 and passage 13 past the check valve 12. The valve 12 serves to prevent the return of the material through the bit. When the material finally reaches the top of the steel it is forced out through the holes 14 and de-- flectcd downward by the apron 15 along the sides or" the steel,

' The usual practice is to cover the hole being dritled by means of a piece of bagging or burlap or other suitable material which will retain the coarser cutting material and permit the water to How back again into the hole. In this manner very little water is needed for the drill operation as it is used over and over. The use of means for deflecting thewater and material. downwardly not only prevents the loss of the water by its being expelled to a considerable distance away from the steel but also serves to permit the operator to stand in close proximity to the drill. It is evident that various changes might be resorted to i the form, construction and arrangement of the several parts without departing from the spirit and scope of my invention; hence I do not wish to limit myiclf strictly to the structure herein set forth,

What I claim is:

1. A drill bit. and its steel having a passage for the discharge of the out material, a check valve for said passage and-.an apron for directing the discharged material down- \vardly along the steel.

2. A drill hit, its steel and shank having a passage forfthe discharge of the out material, a check valve for said passage and an apron surrounding the shank for directing the discharged material downwardly along the steel.

3. A drill bit, its steel and shank having a passage for the discharge of the cut matelet holes, and an apron surrounding the shank for directing the discharged material downwardly along the steel.

4. A drill bitand its steel having. a pas; sage for the discharge of the en; mat; v In testimony, hat I claim the foregoing and a check valve for said passage 3i, i i. f as my invention, I have signed my name in having a socket for receiving the bit, and; an i presence of two witnesses, this fourth day of 20 aproi' for (lirleciinlg the}(l1schalrged matey August 1911. rial ownwarr 1y a ong tie stee,

5. A drill hit, its steel and shank having CHARLES H a passage for the discharge of the cut material, a check Yalve for said passage, said steel having a socket for receiving the bit and id? having a socket for receiving the- Skfifil, and an apron surrounding the 15 an in directing the discharged material v dgo,\ -nwariily alon the steel.

\Vitnesses r F. GEORGE, BARRY, G, S. SUNDGREN.