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US3730085A Expired / Lapsed US ⏱️ 0.0 years remaining

Selective drum printer with pawl means to lock the type wheel in selected position

Assignee: Beazer East Inc
•
Filing: 1971-09-20
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Granted: 1973-05-01
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Expires: 1991-09-20
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Abstract

Abstract Apparatus for marking a plate member at a preselected location and to impress selected characters on opposite sides of the mark. A bridge member spans a layout table and is movably supported on a pair of rails secured to the table sides so that the bridge member is movable longitudinally along the layout table. A turret assembly is movably supported on the bridge member and is movable longitudinally thereon and transversely relative to the layout table. The turret assembly includes a marking head assembly that is movable vertically toward and away from the plate positioned on the layout table. The marking head assembly includes a central support member with a punch member extending downwardly therefrom and a pair of marking wheels rotatably supported on opposite sides of said support member. The marking wheels have a plurality of raised characters positioned at spaced intervals along the outer periphery. The marking wheels are rotated by means of a driven worm gear assembly and a pawl ratchet assembly. A fixed commutator wheel is associated with each marking wheel and has separate commutators for each character on the marking wheel. Separate fixed and movable commutator wheels complete an electrical circuit through a remotely closed switch circuit and the commutator for a selected numeral on the marking wheel. The circuit remotely controls the drive for rotating the marking wheel and stops the wheel when the selected numeral is in a marking position.

Inventors

  • 👤 N Beck

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 04:33
CPC Classifications
B; B44; B44B; B44B5/00; B44B5/0076; B41; B41J; B41J3/00; B41J3/38; Y; Y10; Y10S; Y10S101/00; Y10S101/36

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 187 words
A marking device comprising, a support member, a marking wheel having a plurality of characters arranged in spaced relation to each other around the outer periphery, said marking wheel rotatably mounted on said support member, said marking wheel having a peripheral gear portion extending around the circumference thereof, a drive gear meshing with said gear portion and operable upon rotation to rotate said marking wheel, drive means connected to said drive gear and operable to rotate said drive gear, said marking wheel having a peripheral ratchet portion extending around the circumference thereof, a pawl member pivotally secured to said support member and movable into engagement with said ratchet portion for locking said marking wheel in a fixed position on said support member following rotation of said marking wheel to a preselected marking position, second drive means for moving said pawl member into and out of engagement with said ratchet portion, and control means for consecutively: actuating said drive means until said marking wheel reaches a preselected marking position; and for actuating said second drive means until said pawl member is in locking engagement with said ratchet portion.
Claim 2
Dependent Claim 187 words
A marking device comprising, a support member, a marking wheel having a plurality of characters arranged in spaced relation to each other around the outer periphery, said marking wheel rotatably mounted on said support member, said marking wheel having a peripheral gear portion extending around the circumference thereof, a drive gear meshing with said gear portion and operable upon rotation to rotate said marking wheel, drive means connected to said drive gear and operable to rotate said drive gear, said marking wheel having a peripheral ratchet portion extending around the circumference thereof, a pawl member pivotally secured to said support member and movable into engagement with said ratchet portion for locking said marking wheel in a fixed position on said support member following rotation of said marking wheel to a preselected marking position, second drive means for moving said pawl member into and out of engagement with said ratchet portion, and control means for consecutively: actuating said drive means until said marking wheel reaches a preselected marking position; and for actuating said second drive means until said pawl member is in locking engagement with said ratchet portion.
Claim 3
Dependent Claim 61 words
A marking device as set forth in claim 1 in which said control means include, a plurality of fixed contactors positioned on said support member in nonrotatable relation to said marking wheel, and a movable contactor secured to said marking wheel and rotatable therewith, said movable contactor operable upon rotation to abut said fixed contactors and provide a current path therebetween.
Claim 4
Dependent Claim 62 words
A marking device as set forth in claim 2 which includes, a conductor ring on said marking wheel periphery, a fixed conductor secured to said support member and positioned in current conducting relation with said conductor ring, said movable contactor connected to said conductor ring to provide a current path from said fixed conductor through said conductor ring to said movable contactor.
Claim 5
Dependent Claim 126 words
A marking device as set forth in claim 3 which includes, a housing member fixedly secured to said support member and forming a part thereof, said housing member having an annular surface positioned coaxially with said marking wheel, said fixed contactors embedded in said annular surface in spaced relation therearound, each contactor having an arcuate surface portion forming a portion of said annular surface, said movable contactor comprising an arm member pivotally connected at one end to said marking wheel and having a wheel member rotatably secured to the other end, and resilient means urging said contactor wheel member into abutting relation with said annular surface so that said movable contactor upon rotation of said marking wheel sequentially moves into conducting relation with said fixed contactors.

References Cited (Backward Citations)

US1746516A Cited
US923074A Cited
US2818801A Cited
US2766687A Cited
US3141402A Cited
US3156181A Cited
US3379075A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-04-30 1976-10-30 1977-05-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-04-30 1980-10-30 1981-05-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-04-30 1984-10-30 1985-05-01 $7700.00 Window Closed / Lapsed

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