Patent US3741079A successfully refreshed from Google Patents.
US3741079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web splicing methods
Assignee: Masson Scott Thrissell Engineering Ltd
•
Filing: 1970-10-13
•
Granted: 1973-06-26
•
Expires: 1990-10-13
Abstract
Abstract A method of splicing two webs of paper being fed in overlapping relationship in which slits are cut in both webs simultaneously to form identical superimposed tabs which are then bent in the same direction out of the plane of the webs, to interlock the webs.
Inventors
- 👤 W Bossons
- 👤 H Lindstaedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:54
CPC Classifications
B; B31; B31F; B31F5/00; B31F5/02; B31F5/027; B65; B65H; B65H2301/00; B65H2301/40; B65H2301/46; B65H2301/463; B65H2301/4632; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24281; Y10T428/24289
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
334 words
In a method of splicing two elongated webs of paper, card or the like during lengthwise travel of said webs, comprising the steps of feeding a leading end portion of one of said webs into overlapping relationship with a trailing end portion of the other of said webs, cutting slits in both the overlapping portions simultaneously at each of a plurality of positions to form at each position a pair of identical tabs, one in each web, each of which remains attached to its web along a line at the base of the tab extending substantially transversely of the length of the web, bending all the tabs of both webs in the same direction so that all the tabs of one of said portions project through the other of said portions, and advancing said trailing end portion relative to said leading end poriton, the improement comprising cutting said slits in such manner that each tab is substantially in the form of a circular disc at its free end, the circular disc being integral with a narrower straight sided stem connecting the disc to the root of the tab, so that when the tabs are bent, the circular disc forming the head of each tab of the trailing end portion is caused to project through the leading end portion, immediately below the corresponding tab of the latter portion, and when the trailing end portion is advanced relative to the leading end portion, the circular disc of each tab of the trailing end portion slides into engagement with the base of the corresponding tab of the leading end portion between the stem of the corresponding tab of the leading end portion and the exposed surface of the leading end portion adjacent to the space from which the stem of its tab has been removed preventing disengagement of said webs without relative movement of said leading end portion relative to said trailing end portion in the opposite direction by a distance at least equal to said advancement.
Claim 2
Dependent Claim
334 words
In a method of splicing two elongated webs of paper, card or the like during lengthwise travel of said webs, comprising the steps of feeding a leading end portion of one of said webs into overlapping relationship with a trailing end portion of the other of said webs, cutting slits in both the overlapping portions simultaneously at each of a plurality of positions to form at each position a pair of identical tabs, one in each web, each of which remains attached to its web along a line at the base of the tab extending substantially transversely of the length of the web, bending all the tabs of both webs in the same direction so that all the tabs of one of said portions project through the other of said portions, and advancing said trailing end portion relative to said leading end poriton, the improement comprising cutting said slits in such manner that each tab is substantially in the form of a circular disc at its free end, the circular disc being integral with a narrower straight sided stem connecting the disc to the root of the tab, so that when the tabs are bent, the circular disc forming the head of each tab of the trailing end portion is caused to project through the leading end portion, immediately below the corresponding tab of the latter portion, and when the trailing end portion is advanced relative to the leading end portion, the circular disc of each tab of the trailing end portion slides into engagement with the base of the corresponding tab of the leading end portion between the stem of the corresponding tab of the leading end portion and the exposed surface of the leading end portion adjacent to the space from which the stem of its tab has been removed preventing disengagement of said webs without relative movement of said leading end portion relative to said trailing end portion in the opposite direction by a distance at least equal to said advancement.
Claim 3
Independent Claim
234 words
A method of splicing two elongated webs of paper, card or the like during their lengthwise travel, comprising the steps of feeding the two webs in overlapping relationship, forming identical, superimposed pairs of tabs in said webs by a single slitting operation on both webs, each tab being connected to its web, along a line at the base of the tab extending substantially transversely of the length of the web, by a narrow portion and having a wider portion at its free end, bending both tabs simultaneously in the same direction so that the tab of one of the webs passes through the plane of the other web, and advancing one web relatively to the other so that the narrow portion of one tab of each pair slides along the slot vacated by the narrow portion of the other tab, until the wide portion of said one tab has been drawn to the end of said slot into engagement with the base of the other tab between the narrow portion of the other tab and the surface of the web adjacent the space from which the narrow portion of the other tab has been removed and locks the two webs together whereby said webs cannot be separated without first Oving said webs relative to each other in the opposite direction by the same distance as the advancement of said webs relative to each other.
Claim 4
Independent Claim
234 words
A method of splicing two elongated webs of paper, card or the like during their lengthwise travel, comprising the steps of feeding the two webs in overlapping relationship, forming identical, superimposed pairs of tabs in said webs by a single slitting operation on both webs, each tab being connected to its web, along a line at the base of the tab extending substantially transversely of the length of the web, by a narrow portion and having a wider portion at its free end, bending both tabs simultaneously in the same direction so that the tab of one of the webs passes through the plane of the other web, and advancing one web relatively to the other so that the narrow portion of one tab of each pair slides along the slot vacated by the narrow portion of the other tab, until the wide portion of said one tab has been drawn to the end of said slot into engagement with the base of the other tab between the narrow portion of the other tab and the surface of the web adjacent the space from which the narrow portion of the other tab has been removed and locks the two webs together whereby said webs cannot be separated without first Oving said webs relative to each other in the opposite direction by the same distance as the advancement of said webs relative to each other.
Claim 5
Dependent Claim
20 words
A method according to claim 2, wherein the wide portions of said tabs take the form of substantially circular discs.
Claim 6
Independent Claim
228 words
A method of splicing two elongated webs of paper, card or the like wherein each web includes at least one tab cut from the web material leaving an aperture therein, each tab comprising an elongated narrow portion connected to its web along a line at the base of the tab extending substantially transversely of the length of the web and a wider portion at its free end, and each aperture having a corresponding configuration, said method comprising a. placing said webs in overlapping relationship with said tabs and apertures registering, b. bending the pair of superimposed tabs in one direction such that the tab of one web passes through the aperture in the other, and c. moving one web relative to the other in a direction such that the elongated narrow portion of the tab of said one web passes along the slot in the other web vacated by the narrow portion of the tab of the other web and the wide portion of the tab of said one web is engaged adjacent the base of the tab of the other web between the narrow portion of the tab of the other web and the surface of the other web locking said webs together, d. whereby said webs cannot be separated without first moving said webs relative to each other by the same distance in the opposite direction.
Claim 7
Independent Claim
228 words
A method of splicing two elongated webs of paper, card or the like wherein each web includes at least one tab cut from the web material leaving an aperture therein, each tab comprising an elongated narrow portion connected to its web along a line at the base of the tab extending substantially transversely of the length of the web and a wider portion at its free end, and each aperture having a corresponding configuration, said method comprising a. placing said webs in overlapping relationship with said tabs and apertures registering, b. bending the pair of superimposed tabs in one direction such that the tab of one web passes through the aperture in the other, and c. moving one web relative to the other in a direction such that the elongated narrow portion of the tab of said one web passes along the slot in the other web vacated by the narrow portion of the tab of the other web and the wide portion of the tab of said one web is engaged adjacent the base of the tab of the other web between the narrow portion of the tab of the other web and the surface of the other web locking said webs together, d. whereby said webs cannot be separated without first moving said webs relative to each other by the same distance in the opposite direction.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |