US1093491A - Static electric eradicator. - Google Patents

Description

@QW I F. A. SMITH.

STATIC ELECTRIC BBADIGATOR.

APPLICATION nun MAR. 2a, 1913.

1,093,491, Patented Apr. 14, 1914 lV/TNESSES: IN VEN TOR machines UNITED STATES PATENT o Fron.

FRANK A. SMITH, or SYRACUSE, new YORK, ASSIGNOZB. 'ro -saurrro n'micrrto'nnanr- CATOB, INCORPORATED, or SYRACUSE, NEW YORK, a CORPORATION or NEW YORK.

s'ra'rrc ELEcrmc nnnmcn'roia Specification of Letters Patent. Patented Apr. 14, 1914. Application filed Mal-eh 28, 19 13. Serial m. 757,339.

To all whom it may concern:

In the drawinlgs Figure 1 is a side view Be it known that I, FRANK A. SMITH, of r of my device. ig. 2 is a partial vertical Syracuse, in the county of Onondaga, in the, State of New York, have invented new and useful Improvements in Static Electric Eradicator-s, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates tocertain improvements in static electric eradicators and pertains more particularly to a device of this kind adapted to be used in connection with printing and lithogi'aphing presses or other for extracting the electricity from paper passing therethrough.

It is well known among those familiar with the art of printing and other allied arts that the presence of electricity greatly decreases the facility with which paper is handled, also the efliciency of the machine operating upon the same, resulting in an improper dellveryof the sheets and caus- .ing crumpling and'wrinkling of the same and curling of the edges. It is equally well known that the charge of electricity varies greatly in different classes of papers and in papers of the same class under different weather conditions and is perceptibly increased by the operation of printing or lithographing upon paper and results in a strong frictional adhesion of the sheets and great difficulty therefor in separating the same, particularly when it is desired to print upon the second side of the sheet, sheets often clinging together so closely that they escape the notice of the operator and are allowed to pass through the machine in' duplicate, resulting in a good deal of waste material and time.

The object of my invention is, therefore, to construct a device which shall extract the electricity from the paper as it passes through the machine or as it is delivered therefrom and which shall be of simple and inexpensive construction and applicable for the following description.

' electricity longitudinal cross section. Fig. 3 is a cross section on line 3,3, Fig. 1. Fig. 4" is a partial hor zontal longitudinal cross section.

'Fig. 5 shows a portion of the split tube confining the wire fabric.

I have notdeemed it necessary for a clear understanding of. my invention that it should be shown as applied to a press, it being understood that it may be placed in any position upon said machine so long as it lies within the field of static electricit created by the paper passing therethrou' and sufficiently near the paper to extract the therefrom. Preferably, however,'it is positioned at the delivery end of the machine and at a point adjacent the delivery of said paper to the fly-sticks.

The device comprises a tube 1- of conducting material, as copper, and split through one side to form a longitudinal opening of equal length with the tube. Through the opening 2- is inserted a wire fabric -3 having a portion thereof formed of transverse threads only. The tube 1 is then compressed together in any suitable manner as by a vise, in order to tightly confine the wire fabric, and it is equally apparentthat the tube maybe readily expanded for removal of the fabric. Airinsulating casing the tube 1- and within which said tube is adapted to telescope is provided with a longitudinal slit or opening -5-. of awidth preferably just exceeding the thickness of the wirefabric so that the tube 1, confining one end of the fabric, may be inserted in said casing, the fabric lyingin the open-' ing 5-, and the longitudinal threads of the fabric terminating preferably just with in the outer circumference of the "casing 4 so that the extending portion is formed only of transverse threads or wires lying in substantially the same direction.

. In order 7 that the tube -1- may be rigidly confined within the casing .4, the

' ends of said casing are preferably externally screw-threaded for the reception of internally threaded fiber or rubber caps 6, but it is readily apparent that these caps 4 of equal length with may be cemented or attached in any suitable manner to the casing --4.- and it is not essential that they therewith.

have a threaded relation extending threads of the fabric, and for the I purpose of causing this currentto dissipate itself, I have provided .a wire 7 connected to the tube v1- or held in contact with the same in any suitable manner as by.

a pin 8- seated in a loop upon the end of the wire. The wire -7- passes outwardly through an opening in thecap 6 and is preferably covered with insulating material or aninsulating casing extending from a point-within the tube 1 to substantially the end of the wire.

It is readilyapparent that the wire -7 may be directly connected to the fabric and that therefore the tube '-l need not necessarily be formed of conducting material although I have preferably shown it as such. It is equally true that the wire fabric 3 may be of any form, the only essential feature being that strands thereof shall project from the casing l, andthat the length of the tube and easing, as well as the diameter of each of them, may be varied to .suit difierent sizes and styles of machines without departing from the invention as set "forth in the appended claims.

What I claim is:

1. In combination a split tube, wire fabric confined by said tube and having projecting strands, an insulating casing within which said tube vided with a longitudinal opening through which said strands extend, means for contelescopes, said casing profining said tube within said casing, and a said fabric.

' 2. In combination a split tube, a row of transversely extending wires confined by said tube and projecting therefrom, an insulating casing within which said tube telescopes, said casing provided with an openingthrough which said wires extend, means for confining said tube within said casing, and a discharge wire electrically connected with said projecting wires.

3. In combination a tube split through one side, a row of transversely extending wires havingone end confined by said tube, an insulating material surrounding said tube and from which said wires project, caps upon the ends of said insulating material, and a discharge wire electrically connected to said transversely extending wiresv and passing through an opening in one of said caps.

4-. In combination a tube split through one side, a row of transversely extending wires having one end confined by said tube, an insulating casing within which said tube telescopes and from which said wires project, caps upon the ends of said casing and confining said tube, and a discharge wire electrically connected to said transversely discharge wire electrically connected with extending wires and passing through an j opening in one of said caps.

In witness whereof I have hereunto set my hand this 14th day of March, 1913.

. FRANK A. SMITH.

l Vitnesses A. THoMrsoN,

T'T VIOLA nownann.

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