Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
117 words
A method of breaking away pre-stamped pieces of material in sheet-like webs of material, comprising moving such a web of material in the direction of its length, progressively bringing a break-away matrix up to the speed of movement of the web to make surface contact with one side of the web on attaining speed synchronism therewith, also progressively bringing up to the speed of movement of the web pairs of members whereof one of each pair is at each side of the web to grip therebetween on attaining speed synchronism with the web pieces of material to be broken away from the web, and breaking away the so-gripped pieces of material against the support of the matrix.
Claim 2
Independent Claim
117 words
A method of breaking away pre-stamped pieces of material in sheet-like webs of material, comprising moving such a web of material in the direction of its length, progressively bringing a break-away matrix up to the speed of movement of the web to make surface contact with one side of the web on attaining speed synchronism therewith, also progressively bringing up to the speed of movement of the web pairs of members whereof one of each pair is at each side of the web to grip therebetween on attaining speed synchronism with the web pieces of material to be broken away from the web, and breaking away the so-gripped pieces of material against the support of the matrix.
Claim 3
Independent Claim
399 words
A device in a stamping machine for breaking away pre-stamped pieces of material in sheet-like webs of material in a break-way zone of the machine, said device comprising means for progressing such a web along a plane in the direction of its length, first and second carriers mounted one above and one below said plane in the frame of the machine at the break-away zone for movement towards and away from said plane, networks of rigidly-mounted break-away pins which are mirror images of one another mounted in said first and second carriers with the axes of the break-away pins normal to said plane and the lower break-away pins resiliently displaceable in the directions of their lengths, a third carrier supported in said frame below said plane, a matrix mounted on said third carrier and having through-openings each co-axial with an upper and a lower break-away pin, and means for guiding the first, second and third carriers each along a path of movement in relation to the movement of the web with appropriate correlation of the break-away pins and the through-openings in the break-away matrix with the pieces of material to be broken away such that in a first section the three carriers are accelerated from starting positions to the speed of the web, in a second section at least between the start and finish of the break-away operation the three carriers move synchronously with the web, in a third section the three carriers are decelerated, and in a fourth section the three carriers are returned to their starting positions, the path of movement of the first carrier including a phase of downwards movement towards said plane and substantially coincident with its first and second sections and a phase of upwards movement away from said plane and substantially coincident with its third section, the path of movement of the second carrier including a phase of upwards movement towards said plane and substantially coincident with its first section, and a phase of downwards movement away from said plane and substantially coincident with its second and third sections, and the path of movement of the third carrier including a phase of upwards movement towards said plane until the matrix is applied against the web, said phase being substantially coincident with its first section, and a phase of downwards movement away from the web and falling into the end of its fourth section.
Claim 4
Independent Claim
399 words
A device in a stamping machine for breaking away pre-stamped pieces of material in sheet-like webs of material in a break-way zone of the machine, said device comprising means for progressing such a web along a plane in the direction of its length, first and second carriers mounted one above and one below said plane in the frame of the machine at the break-away zone for movement towards and away from said plane, networks of rigidly-mounted break-away pins which are mirror images of one another mounted in said first and second carriers with the axes of the break-away pins normal to said plane and the lower break-away pins resiliently displaceable in the directions of their lengths, a third carrier supported in said frame below said plane, a matrix mounted on said third carrier and having through-openings each co-axial with an upper and a lower break-away pin, and means for guiding the first, second and third carriers each along a path of movement in relation to the movement of the web with appropriate correlation of the break-away pins and the through-openings in the break-away matrix with the pieces of material to be broken away such that in a first section the three carriers are accelerated from starting positions to the speed of the web, in a second section at least between the start and finish of the break-away operation the three carriers move synchronously with the web, in a third section the three carriers are decelerated, and in a fourth section the three carriers are returned to their starting positions, the path of movement of the first carrier including a phase of downwards movement towards said plane and substantially coincident with its first and second sections and a phase of upwards movement away from said plane and substantially coincident with its third section, the path of movement of the second carrier including a phase of upwards movement towards said plane and substantially coincident with its first section, and a phase of downwards movement away from said plane and substantially coincident with its second and third sections, and the path of movement of the third carrier including a phase of upwards movement towards said plane until the matrix is applied against the web, said phase being substantially coincident with its first section, and a phase of downwards movement away from the web and falling into the end of its fourth section.
Claim 5
Dependent Claim
32 words
A device as set forth in claim 2, in which the second section of the third carrier is of greater duration than the second section of both the upper and lower carriers.
Claim 6
Dependent Claim
82 words
A device as set forth in claim 3, in which eccentric drives mount the first and second carriers in each case ensuring their guidance parallel to said plane with the eccentricity in conformity with the movement towards and away from said plane, and the first carrier is offset in relation to the second carrier by a distance, in the direction of travel of the web of material, corresponding to the movement section lying between the beginning and end of the break-away operation.
Claim 7
Dependent Claim
97 words
A device as set forth in claim 4, in which carriages on crankpins of crankshafts loCated at the ends of the carriages mount the first and second carriers, and the mid-points of the crankshaft and of the crankpin in each case are spaced from one another by a distance corresponding to the radius of the paths of travel of the first and second carriages, and the mid-points of the crankshafts supporting the first carriage - in relation to the direction of movement of the web are spaced behind the mid-points of the crankshafts supporting the second carrier.
Claim 8
Dependent Claim
72 words
A device as set forth in claim 5, in which the distance between the mid-points of the crankshafts of the first and second carriages in relation to the direction of movement of the web is the same as the distance between a point at which associated upper and lower break-away pins engage the web and a point at which the lower break-away pin is again detached from the associated upper break-away pin.