Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
95 words
A record copying platen for copying a record comprising a base and mounted to said base two platen members, each mounted for movement to or away from said base, the one platen constrained to lie in a plane parallel to the other by a balancing means interconnecting said platen, said balancing means comprising two parallel links mounted to the platen members, one of said links being slidably mounted to a pivot mounted on said base so as to provide a biasing means whereby the platens can be balanced with a different weight on each platen.
Claim 2
Dependent Claim
95 words
A record copying platen for copying a record comprising a base and mounted to said base two platen members, each mounted for movement to or away from said base, the one platen constrained to lie in a plane parallel to the other by a balancing means interconnecting said platen, said balancing means comprising two parallel links mounted to the platen members, one of said links being slidably mounted to a pivot mounted on said base so as to provide a biasing means whereby the platens can be balanced with a different weight on each platen.
Claim 3
Dependent Claim
32 words
A platen as claimed in claim 1 including a translucent platen mounted to said base so as to clamp a record between its lower surface and the upper surface of the platens.
Claim 4
Dependent Claim
85 words
A record copying platen for copying a record comprising a base and two platen members mounted on cross links for movement to or away from said base and having means to urge the platens into an upper position, said cross links pivotted to each other at the point of crossing, the lower end of each outwardly facing link being slidably mounted to said base and interconnected by a resilient means whereby the one platen is constrained to lie in a plane parallel to the other.
Claim 5
Dependent Claim
85 words
A record copying platen for copying a record comprising a base and two platen members mounted on cross links for movement to or away from said base and having means to urge the platens into an upper position, said cross links pivotted to each other at the point of crossing, the lower end of each outwardly facing link being slidably mounted to said base and interconnected by a resilient means whereby the one platen is constrained to lie in a plane parallel to the other.
Claim 6
Dependent Claim
21 words
A platen as claimed in claim 3 wherein said means to urge the platens into an upper position comprises spring means.
Claim 7
Dependent Claim
19 words
A platen as claimed in claim 3 wherein means are provided for adjusting the tension of the resilient means.
Claim 8
Dependent Claim
32 words
A platen as claimed in claim 3 including a translucent platen mounted to said base so as to clamp a record between its lower surface and the upper surface of th platens.
Claim 9
Dependent Claim
72 words
A record copying platen for copying a record comprising a base and two platen members constrained to lie in a plane parallel to each other and mounted on cross links for movement to or away from said base, said cross links pivotted to each other at the point of crossing, and means to urge the platens into an upper position, said means comprising a cylinder for each platen, each cylinder being interconnected.
Claim 10
Dependent Claim
72 words
A record copying platen for copying a record comprising a base and two platen members constrained to lie in a plane parallel to each other and mounted on cross links for movement to or away from said base, said cross links pivotted to each other at the point of crossing, and means to urge the platens into an upper position, said means comprising a cylinder for each platen, each cylinder being interconnected.
Claim 11
Dependent Claim
33 words
A platen as claimed in claim 7 wherein the lower end of each outwardly facing link is slidably mounted to the said base and each lower end is interconnected by a resilient means.
Claim 12
Dependent Claim
28 words
A platen as claimed in claim 7 wherein there is connected to each cylinder a further cylinder, the pressure in which can be adjusted by an adjustment means.
Claim 13
Dependent Claim
39 words
A platen as claimed in claim 9 wherein the adjustment means is provided with a releasable lock so as to hold the adjustment means in a plurality of positions, whereby the pressure in the platen cylinders can be adjusted.
Claim 14
Dependent Claim
32 words
A platen as claimed in claim 7 including a translucent platen mounted to said base so as to clamp a record between its lower surface and the upper surface of the platens.