Untitled record

Application filed April 9, 1885. Serial No. 161,695. (No model.)

To all whom it may concern:

Be it known that I, Charles Smith, a citizen of the United States, residing at Belleville, in the county of Essex and State of New Jersey, 5 have invented certain new and useful Improvements inDandy-Rolls for Paper-Making Machines; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others io skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which forma part of of this specification.

The object of this invention is to secure increased strength and firmness in the dandy-roll, and to produce a more perfect mark in what known as “laid” paper.

The invention consists in the arrangements 20 and combinations of parts, substantially as will be hereinafter embodied in the clauses of the claims.

Referring to the accompanying drawings, in which like letters of reference indicate corre25 spending parts in each of the several figures, Figure 1 is a plan of a dandy-roll having my improvements. Fig. 2 is a section of the same, taken through line sc; and Figs. 3,4, and 5, are views of certain parts in detail.

In said diawings, a indicates a dandy-roll having a series of rings, ribs, or disks, δ. These are arranged at intervals throughout its length, and are peripherally notched, as at d d in Fig. 4, to receive longitudinal wires c c.

The notches d d in the several disks lie in line in the series, so that the wires placed therein will lie straight and parallel from end to end to secure the usual and proper mark over the ground or surface of the paper. The 40 wires c at their ends are secured, preferably by solder, to the end disks, rings, or plates, so that any endwise movement is prevented, while at intervals throughout their lengths said wires c are held into the notches by compara45 tively small transverse or circumferential wires e e, which make continuous projecting lines or ribs around the cylinder to make in the paper transverse marks of lighter shade. Said projecting and binding wires ee are pref50 erably arranged at points approximately over the disks, the latter providing a firm bearing for the said wires. The longitudinal wires are preferably indented to receive the transverse wires, as in Fig. 3. These said circumferential wires, sometimes known as “warp- 55 wires,” differ from those heretofore employed for a somewhat similar purpose, in that in the latter case two wires were used which passed alternately over and under the longitudinal or “filling” wire to inclose the same, and were 60 twisted between each of the said filling-wires, thus holding the succession of wires together. By this prior construction the said twisted wires were liable to “lick up” the paperpulp, so that the mark produced on the pa- 65 per was made irregular thereby in form or outline and in its ability to transmit the light. In my improved construction the wire for binding the longitudinal wires are straight in comparison, and will not to the same extent 70 lick up the pulp, and thus the paper, when held to the light, will present a more clearly defined and regular mark.

The construction described and hereinafter claimed has, in addition to the above, 75 advantages of strength and firmness not possessed by the older constructions referred to, and, withal, can be manufactured at reduced cost.

I am aware that changes may be made in 80 the construction of the dandy-roll departing from that set out in the drawings; and I do not wish to be understood as limiting myself to such construction, or to positive expressions employed in describing the same in the specifi- 85 cation. To the end ribs may be secured removable journal-heads//. These maybe secured to the end disks by bolts or screws/'/', the said end disks being provided with suitable perforations,/, to receive said bolts. The 90 longitudinally-arranged wires are preferably soldered at their ends to the end disks to prevent any longitudinal motion or displacement.