Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
141 words
A method of drilling shot firing holes in the face of a roadway or tunnel by means of a bucket loader on which is displaceably mounted a drilling mast which carries a slidable drill head, with a power unit to displace said drill head with respect to said mast connected between said drill head and said mast, comprising the steps of: advancing said mast from a non-active, rearward position towards an active, forward position, by fixing said drill head with respect to said bucket loader and activating said power unit; fixing the position of said mast with respect to said loader and releasing said drill head and again activating said power unit to advance said drill head with respect to said mast to initiate drilling operations; and retracting said drill head by activating said power unit after drilling operations are completed.
Claim 2
Independent Claim
141 words
A method of drilling shot firing holes in the face of a roadway or tunnel by means of a bucket loader on which is displaceably mounted a drilling mast which carries a slidable drill head, with a power unit to displace said drill head with respect to said mast connected between said drill head and said mast, comprising the steps of: advancing said mast from a non-active, rearward position towards an active, forward position, by fixing said drill head with respect to said bucket loader and activating said power unit; fixing the position of said mast with respect to said loader and releasing said drill head and again activating said power unit to advance said drill head with respect to said mast to initiate drilling operations; and retracting said drill head by activating said power unit after drilling operations are completed.
Claim 3
Dependent Claim
93 words
A bucket loader for the combined driving of a tunnel or roadway and the loading of the resulting debris comprising at least one elongate drilling mast mounted on said loader and displaceable between active and non-active positions, a drill head carried by said mast and displaceable therealong, means to releasably secure said mast with respect to said loader to advance or retract said drill head, power means for displacing said drill head relative to said mast, and means to releasably secure said drill head to said loader to advance or retract said mast.
Claim 4
Dependent Claim
93 words
A bucket loader for the combined driving of a tunnel or roadway and the loading of the resulting debris comprising at least one elongate drilling mast mounted on said loader and displaceable between active and non-active positions, a drill head carried by said mast and displaceable therealong, means to releasably secure said mast with respect to said loader to advance or retract said drill head, power means for displacing said drill head relative to said mast, and means to releasably secure said drill head to said loader to advance or retract said mast.
Claim 5
Dependent Claim
25 words
A bucket loader as claimed in claim 2, wherein said means for releasably securing the mast with respect to the loader comprises a swingable stop.
Claim 6
Dependent Claim
25 words
A bucket loader as claimed in claim 2, wherein said means for releasably securing said drill head to said loader comprises a removable fixing pin.
Claim 7
Dependent Claim
33 words
A bucket loader as claimed in claim 3, wherein said mounting of said mast on said loader is via a support means carried by said loader, on which support means said mast seats.
Claim 8
Dependent Claim
16 words
A bucket loader as claimed in claim 5, wherein said support means are spaced slide/guide brackets.
Claim 9
Dependent Claim
18 words
A bucket loader as claimed in claim 5, wherein a support means is also provided on said bucket.
Claim 10
Dependent Claim
23 words
A bucket loader as claimed in claim 7, wherein said support means on said bucket is in the form of a slide/guide bracket.
Claim 11
Dependent Claim
22 words
A bucket loader as claimed in claim 3, wherein said power unit is a chain and sprocket and double-acting hydraulic ram arrangement.
Claim 12
Dependent Claim
17 words
A bucket loader as claimed in claim 3, wherein said bucket is carried by an articulated boom.