US3676632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing welded mesh
Assignee: EVG Entwicklungs und Verwertungs GmbH
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Filing: 1970-07-10
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Granted: 1972-07-11
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Expires: 1990-07-10
Abstract
Abstract The invention relates to the manufacture of welded wire mesh for use as concrete reinforcement. The mesh is manufactured by advancing an array of longitudinal wires through a welding machine having a row of electrodes and welding transverse wires to the array by means of resistence welding. To avoid embrittlement of the material of the wires in the region of the weld due to rapid temperature changes, preheaters are provided for preheating the longitudinal wires where the welding is to take place. The preheaters are movable mounted and preheat the longitudinal wires during at least a part of their advance through the machine. In one example the longitudinal wires are advanced intermittently past stationary welding electrodes and the preheaters alternately advance with the wires and then return to an initial position. In a second example the longitudinal wires are advanced continuously through the machine and both the electrodes and the preheaters alternately advance with the wires and return to initial positions. The alternating advance and return of the preheaters may be out of phase with respect to that of the electrodes.
Inventors
- 👤 Klaus Ritter
- 👤 Hans Gott
- 👤 Josef Ritter
- 👤 Gert Ritter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:40
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/002; B23K11/008; B23K11/0086
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
89 words
A process for manufacturing welded mesh comprising forming an array of longitudinal wires, causing relative movement between said array and a transverse row of electrodes, feeding successively transverse wires against said array at the site of said electrodes welding said transverse wires at successive spaced locations along said array by electric resistance welding, and reciprocably moving a preheating means along with said array to preheat said longitudinal wires at each said successive spaced location along said array prior to welding said transverse wire to said array at that lOcation.
Claim 2
Dependent Claim
89 words
A process for manufacturing welded mesh comprising forming an array of longitudinal wires, causing relative movement between said array and a transverse row of electrodes, feeding successively transverse wires against said array at the site of said electrodes welding said transverse wires at successive spaced locations along said array by electric resistance welding, and reciprocably moving a preheating means along with said array to preheat said longitudinal wires at each said successive spaced location along said array prior to welding said transverse wire to said array at that lOcation.
Claim 3
Dependent Claim
79 words
A process according to claim 1, wherein said array is advanced in intermittent strokes past said row of electrodes, and said preheating of each successive spaced location along said array of said longitudinal wires is terminated before said location reaches said row of electrodes, said preheating means being returned to its initial position prior to completion of said advancing stroke and commencing preheating said longitudinal wires at the next successive spaced location during said welding of said transverse wire.
Claim 4
Dependent Claim
34 words
A process according to claim 1, wherein said array of said longitudinal wires is advanced continuously, said electrodes and said preheating means being alternately advanced with said advancing array and returned to initial positions.
Claim 5
Dependent Claim
65 words
A process according to claim 3, wherein said advance and return of said preheating means is out of phase with said advance and return of said electrodes, said preheating means reaching said initial position prior to completion of said advance of said electrodes, preheating of the next of said successive spaced locations along said array being commenced before termination of said advance of said electrodes.
Claim 6
Dependent Claim
101 words
A mesh welding machine comprising resistance welding means including a transverse row of electrodes, means for advancing an array of longitudinal wires of said mesh, means for feeding transverse wires to said welding means, said welding means being adapted to weld said transverse wires to said longitudinal wires at successive spaced locations therealong, reciprocable means for preheating said longitudinal wires at said successive spaced locations, movable mounting means for said preheating means adapted to permit said preheating means to travel along with said array during said advance thereof, and means for advancing said preheating means during said advance of said array.
Claim 7
Dependent Claim
101 words
A mesh welding machine comprising resistance welding means including a transverse row of electrodes, means for advancing an array of longitudinal wires of said mesh, means for feeding transverse wires to said welding means, said welding means being adapted to weld said transverse wires to said longitudinal wires at successive spaced locations therealong, reciprocable means for preheating said longitudinal wires at said successive spaced locations, movable mounting means for said preheating means adapted to permit said preheating means to travel along with said array during said advance thereof, and means for advancing said preheating means during said advance of said array.
Claim 8
Dependent Claim
19 words
A machine according to claim 5 further comprising means for returning said preheating means to an initial position thereof.
Claim 9
Dependent Claim
43 words
A machine according to claim 6 wherein said preheating means includes clamps for engaging said longitudinal wires and said means for advancing said preheating means comprises means for operating said clamps whereby said preheating means may be drawn along by said longitudinal wires.
Claim 10
Dependent Claim
69 words
A machine according to claim 5, wherein said means for advancing said array of longitudinal wires is adapted to advance said wires in intermittent strokes and said means for advancing said preheating means is adapted to advance said preheating means in intermittent strokes from an initial position to a point short of said electrodes whereby said advancing stroke of said array is longer than that of said preheating means.
Claim 11
Dependent Claim
46 words
A machine according to claim 5, wherein said means for advancing said array from said longitudinal wires is adapted to advance said wires continuously, and said machine further comprises means for alternately advancing said electrodes with said array and returning said electrodes to an initial position.
Claim 12
Dependent Claim
31 words
A machine according to claim 9, wherein said means for alternately advancing and returning said electrodes is adapted to operate out of phase with said means for advancing said preheating means.
Claim 13
Dependent Claim
17 words
A machine according to claim 5, wherein said preheating means comprises induction coils surrounding said longitudinal wires.
Claim 14
Dependent Claim
20 words
A machine according to claim 5, wherein said preheating means comprises a plurality of ring burners surrounding said longitudinal wires.
Claim 15
Dependent Claim
14 words
A machine according to claim 5, wherein said preheating means comprise electric resistance heaters.
Claim 16
Dependent Claim
44 words
A machine according to claim 13, wherein each of said resistance heaters comprises a pair of clamping jaws and said means for advancing said preheaters comprises means for closing said jaws on said longitudinal wires whereby said preheating means is advanced by said wires.
Claim 17
Dependent Claim
31 words
A machine according to claim 14, wherein a plurality of grooves are formed in said jaws whereby pairs of adjacent longitudinal wires at difFerent spacings may be gripped by said jaws.
References Cited (Backward Citations)
US1878760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |