Font strip structure

Abstract

The font strip consists of a dimensionally stable photographic film on which have been developed timing marks and type characters. The font strip is accurately positioned on a rotating drum by guide posts which project through apertures on the font strip. The font strip is secured to the surface of the drum by the engagement of an end plate fastened to one end of the font strip, which end plate projects through pins mounted to the surface of the drum. The other end of the font strip is bent within a hooked end plate which engages a correspondingly tapered hook portion of the font drum. A tensioning mechanism associated with the font drum affords the necessary tension to maintain the font strip on the drum.

What is claimed is: 
     
       1. .[.A font strip.]. .Iadd.Structure .Iaddend.for mounting .Iadd.a font strip .Iaddend.to a frame support in phototypesetting machines, comprising; guide apertures for mounting said font strip to said frame support, negative font characters and timing slits located along respective opposite sides of said font strip in aligned relationship with respect to each other.   one end of said font strip includes means for engaging said frame support and the other end of said font strip includes end apertures, and said frame support further includes resilient means engaging said end apertures to secure said font strip to said frame support.   
     
     
       2. .[.A font strip.]. .Iadd.Structure .Iaddend.as in claim 1 further comprising additional timing slits interleaved between said timing slits to indicate different vertical alignments of said font characters. 
     
     
       3. .[.A font strip.]. .Iadd.Structure .Iaddend.as in claim 2 wherein said timing slits are divided into two groups, one of said groups representing top of body alignment and the other group representing base line alignment. 
     
     
       4. .[.A font strip.]. .Iadd.Structure .Iaddend.as in claim 1 wherein said means for engaging is a hooked end clip and said frame support further includes a hooked end plate for receiving and retaining said hooked end clip. 
     
     
       5. .[.A font strip.]. .Iadd.Structure .Iaddend.as in claim 4 wherein said one end of said font strip is folded, said hooked end clip has a bent end portion for retaining said folded end and attaching said font strip end to said hooked end clip. .Iadd. 6. A font strip adapted to be mounted on the rotatable font wheel of a phototypesetting machine, comprising an elongated strip of substantially dimensionally stable material having opposed side margins, two free ends and font characters spaced along its length, fastening means at one of said free ends for attaching said one end to said font wheel and including at least one aperture therein being adapted to engage at least one post attached to said font wheel, and fastening means at the other of said free ends including a bent portion forming an acute interior angle with the remainder of said last-named fastening means and adapted to engage a part of the font wheel that forms an exterior angle substantially mating with said acute angle, so that said font strip can be releasably held on said font wheel in stable position between both said fastening means. .Iaddend..Iadd. 7. A font strip as claimed in claim 6, wherein there are two of said apertures, each engaging a respective post attached to said font wheel and each being located on a different side of the longitudinal axis of said font strip. .Iaddend. .Iadd. 8. A font strip as claimed in claim 6, wherein said strip is formed with a plurality of holes spaced along its length inwardly of its side margins, said holes being adapted to engage guide posts on the font wheel for alignment of said font strip therewith. .Iaddend..Iadd. 9. A font strip adapted to be mounted on the rotatable font wheel of a phototypesetting machine, comprising an elongated strip of dimensionally stable photographic film having opposed side margins, two free ends and font characters spaced along its length, transparent timing slits formed in said film along respective opposite sides of said font strip in aligned relation to each other and in accurate relation to said characters to enable the characters to be photographed during rotation of the font wheel, fastening means attached to one of said free ends in the form of an end plate rigid with respect to said film and having at least one aperture extending therethrough, said aperture being adapted to engage a post attached to said font wheel, and fastening means attached to the other of said free ends in the form of an end plate rigid with respect to said film and including a bent portion forming an acute interior angle with the remainder of said last-named fastening means and adapted to engage a part of the font wheel that forms an exterior angle substantially mating with said acute angle, so that said font strip can be releasably held in stable position on said font wheel by said end plates. .Iaddend. .Iadd. 10. A font strip as claimed in claim 9, further comprising additional timing slits interleaved between said transparent timing slits to indicate different vertical alignments of said font characters. .Iaddend..Iadd. 11. A font strip as claimed in claim 10, wherein said additional timing slits are divided into two groups, one of said groups representing top of body alignment and the other group representing base line alignment. .Iaddend..Iadd. 12. A font strip adapted to be mounted on the rotatable font wheel of a phototypesetting machine, comprising an elongated strip of substantially dimensionally stable material having opposed side margins, two free ends and font characters spaced along its length, fastening means at one of said free ends for attaching said one end to said font wheel, and fastening means at the other of said free ends in the form of a hooked end clip adapted to be received and retained by a hooked end plate on said font wheel, said other free end being folded and said hooked end clip includes a bent portion for retaining said folded end and attaching it to said hooked end clip, so that said font strip can be releasably held on said font wheel in stable position between both said fastening means. .Iaddend.