Reading aid apparatus, especially a copyholder for typewriters

Claim 1

In an apparatus for holding a sheet containing information to be transcribed by a keyboard, the improvement comprising: (a) a rotatable hollow cylinder having a longitudinal rotational axis, said hollow cylinder being made of transparent material for holding a sheet rolled up inside said hollow cylinder, said hollow cylinder having two open ends each with an unobstructed open surface for inserting said sheet into said hollow cylinder through either end without any interference with the sheet insertion, (b) means for rotatably supporting said hollow cylinder, said means for supporting comprising two forked members, each forked member having two elastically yielding curved arms to form a cradle type structure for rotatably holding said hollow cylinder on its outer surface substantially adjacent its open ends and leaving both said open ends unobstructed, said curved arms encircling said hollow cylinder only partially and being sufficiently flexible for permitting an easy insertion and withdrawal of said hollow cylinder substantially perpendicularly to and also lengthwise of said longitudinal rotational axis into and out of said cradle type structure without any tools, (c) said means for supporting further comprising a substantially round member extending in parallel to said rotational axis of said hollow cylinder, said substantially round member rigidly interconnecting said two forked members, clamping means partially encircling said substantially round member, and means secured to said clamping means for carrying said hollow cylinder through said clamping means, (d) and wherein said clamping means is made of relatively elastic material to function as a clamp for said substantially round member to provide a location clamp fit between said substantially round member and said clamping means, whereby said cradle type structure with the hollow cylinder held therein is adjustable in its position up and down, along a curve having its center in said substantially round member and back and forth along said substantially round member.