US836576A - Static discharger. - Google Patents

Static discharger. Download PDF

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Publication number
US836576A
US836576A US25358805A US836576DA US836576A US 836576 A US836576 A US 836576A US 25358805 A US25358805 A US 25358805A US 836576D A US836576D A US 836576DA US 836576 A US836576 A US 836576A
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United States
Prior art keywords
plate
needles
delivery
discharger
sheets
Prior art date
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Expired - Lifetime
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US25358805A
Inventor
William L Hardwicke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEORGE W WYNANT
Original Assignee
GEORGE W WYNANT
Publication date
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05FSTATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00Carrying-off electrostatic charges
    • H05F3/04Carrying-off electrostatic charges by means of spark gaps or other discharge devices

Definitions

  • the main object of the present invention i to provide means for relieving the sheets of their static charge dining the delivery of said:
  • the discharger comprises a supportingpiate 3, preferably metallic and of the desired length and width;
  • the plate is formed with a series of transversely-arranged paral-, lel grooves or recesses 4, in which are reinovably inserted the'discharge-needles 5, Which are of'such length as to ipr'oject below.
  • the plate 3. [i clamp-plate 6 is arranged to contact With the supporting-plate 3, overlying the needles and being secured in position by screws 7. The clamp-plate operates to she cure the needles in their respective grooves, so' as ti; maintain the lower or pointed ends of said needles in horizontal alinernsnt.
  • a clamp 8 is secured at the respective ends of the dlscharger, comprising a U-shaped strip Within which the terminals of the Corn nected supporting and clamp lates are secured by screws 9, the open on of the clamp projecting beyond said plates to receive the 60 transverse bar 1' of the delivery-carriage of r the printing-press, set-screws 10, carried by the clamps, serving to secure them in position.
  • guard-plate 11 represents a guard-plate adjustably secured to the front side of the supportingplate 3 through the medium of screws 12 engagin elonglated slots 13'formed'in sai guard-p ate. 1 he guard-plate projectsbelow the lower edge of the supporting-plate and is eilective in preventing injury to the 7;:
  • the needles-5 are electrically. connected 7 5 through the medium of a Wire 14 of high conductivity, such'as' copper,- which is terminally connected to one of the end needles and projected toward the other, being coiled around each needlein succession; as clearly 80 shown in Fig. 2, W hen in position onthe press, the free terminal of said conductor is to be grounded through connection with any fixed part of the press;
  • the deliverytapes carryingthe printed sheet are moving carriage carrying my irnproved discharger is moving in the opposite lrection, so thatthe needle-points are carried lengthwise above the sheet and effectively relieve said sheets of the static charge induced the printing u v.
  • a static discharger eompris'iig a supporting-plate formed With a plurality of: glZOOVGS, needles seated in said. grooves, a clamp-plate secured. to the supporting plate and overlying the needles, clamps secur (l at the opposite ends of the supporting-plate, a conductor joining the needles, and a guardplate adjustably connected to the support ing-plate.

Description

srarns BhiiEE-QT FIE.
r m-LIAM L. senor/Ions, or aIcIIMoNn, VIRGINIA, ASSIGNOR or" NE- HALF res onse W. 'WYNANT, or Riser/rose, VIRGINIA.
ersrio oieoeiasess.
seaeve.
To (1 62- wi'tomt't mag concern:
33s it known that 1, "WILLIAM L. HARD W "one, a citizen of the United States resid- Richmond, 1n the county of llenrico and State of Virginia, have invented new and:
J passing through the printing-press develop a static charge of electricity, with the result that'in the delivery of said sheets they ad here' or stick together, producing an irregular delivery.
The main object of the present invention i to provide means for relieving the sheets of their static charge dining the delivery of said:
sheets, whereby said delivery isefl'ectively andproperly maintained.
The preferred embodiment of the details. of structure ofmy present invention will be described in the following specification, refererioe bein had to the accompanying draw feg I l lgtfifi 11S a longitudinal sectional view illustrating my im roved dischargerf conneat-ed with the de ivory rnechanism of a printing-press. Fig. 2 is a perspective view of the discharger. Fig. 3'is a rear elevation of the same. 4f is a broken perspective of the-supporting-plate of the discharger.-
The "form of. the invention as illustrated and described is to be applied to the crossbar or? the longitudinally-movable carriage arranged above the delivery-tapes 2.
The discharger comprises a supportingpiate 3, preferably metallic and of the desired length and width; The plate is formed with a series of transversely-arranged paral-, lel grooves or recesses 4, in which are reinovably inserted the'discharge-needles 5, Which are of'such length as to ipr'oject below. the plate 3. [i clamp-plate 6 is arranged to contact With the supporting-plate 3, overlying the needles and being secured in position by screws 7. The clamp-plate operates to she cure the needles in their respective grooves, so' as ti; maintain the lower or pointed ends of said needles in horizontal alinernsnt.
Specification of Letters Patent.
Application and Apri18,1805. seal-Ia. 253,52 .21.
\ operator by the needles in the event manual in 'one direction W1th said sheet, while the Patented. new. 2Q, 1906.
A clamp 8 is secured at the respective ends of the dlscharger, comprising a U-shaped strip Within which the terminals of the Corn nected supporting and clamp lates are secured by screws 9, the open on of the clamp projecting beyond said plates to receive the 60 transverse bar 1' of the delivery-carriage of r the printing-press, set-screws 10, carried by the clamps, serving to secure them in position.
11 represents a guard-plate adjustably secured to the front side of the supportingplate 3 through the medium of screws 12 engagin elonglated slots 13'formed'in sai guard-p ate. 1 he guard-plate projectsbelow the lower edge of the supporting-plate and is eilective in preventing injury to the 7;:
operation of the sheets isnecessary during delivery.
' The needles-5, of which there may be any desired number, are electrically. connected 7 5 through the medium of a Wire 14 of high conductivity, such'as' copper,- which is terminally connected to one of the end needles and projected toward the other, being coiled around each needlein succession; as clearly 80 shown in Fig. 2, W hen in position onthe press, the free terminal of said conductor is to be grounded through connection with any fixed part of the press;
' in use, it bein understood that the points or lower terminsfis of the needles are so positioned as to just escape contact with the delivered sheet 15, the static charge of said sheet will be taken up by the needles and through the conductor M will be grounded. go
It is understood, of course, that in the useof the invention as illustrated the deliverytapes carryingthe printed sheet are moving carriage carrying my irnproved discharger is moving in the opposite lrection, so thatthe needle-points are carried lengthwise above the sheet and effectively relieve said sheets of the static charge induced the printing u v.
oration.
While I have shown and described my diseharger as particularl adapted for use in conjunction with the de ivory mechanism of printing-presses, it 'is obvious that it isequally applicable to other paper-handlin machinery in which the paper is subjecte to the induction of a staticchargeof electricity.
Having thqs described the invent-ion; What is claimed as new is 1. In combination with the delivery mechanism of a printingpress including the (leliverytapes, of a static discharger conji'iectecl with the mechanism and movable above and in reverse direction to the travel of the paper while the latter is on the tapes.
2. The combination With the delivery mechanism of a printing-press, of means connected therewith for-relieving the sheets carried by said mechanism of the static charge of electricity, said means operating above the SL1 )I)OTt6Cl sheets in a direction reverse to the delivery movement of said'sheets.
l t 1 i 1 l l l r l l 3. A static discharger eompris'iig a supporting-plate formed With a plurality of: glZOOVGS, needles seated in said. grooves, a clamp-plate secured. to the supporting plate and overlying the needles, clamps secur (l at the opposite ends of the supporting-plate, a conductor joining the needles, and a guardplate adjustably connected to the support ing-plate.
in testimony whereof I allix my signature in presence of two witness as VUL LIAM ll. HA1 l) 1%" (iii in.
Witnesses:
ALBERT O. Bosonmz, A. D DECKERSON.
US25358805A Static discharger. Expired - Lifetime US836576A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449972A (en) * 1945-06-27 1948-09-28 Beach Robin Elimination of static electricity
US2744212A (en) * 1954-06-04 1956-05-01 Baum David Phonograph attachment for eliminating static electricity from records
US2885599A (en) * 1955-02-08 1959-05-05 High Voltage Engineering Corp Charge transferring means for electrostatic generators
US3179731A (en) * 1963-04-17 1965-04-20 Burns A Cash Support means for resistance furnace
US4385824A (en) * 1981-09-08 1983-05-31 Rca Corporation Static discharge device
US5648838A (en) * 1994-11-01 1997-07-15 Steven Bruce Michlin Method and apparatus for electrically connecting a developer roller to a bias source

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449972A (en) * 1945-06-27 1948-09-28 Beach Robin Elimination of static electricity
US2744212A (en) * 1954-06-04 1956-05-01 Baum David Phonograph attachment for eliminating static electricity from records
US2885599A (en) * 1955-02-08 1959-05-05 High Voltage Engineering Corp Charge transferring means for electrostatic generators
US3179731A (en) * 1963-04-17 1965-04-20 Burns A Cash Support means for resistance furnace
US4385824A (en) * 1981-09-08 1983-05-31 Rca Corporation Static discharge device
US5648838A (en) * 1994-11-01 1997-07-15 Steven Bruce Michlin Method and apparatus for electrically connecting a developer roller to a bias source

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