US3770358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biscuit forming machine
Assignee: Baker Perkins Ltd
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Filing: 1972-01-10
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Granted: 1973-11-06
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Expires: 1992-01-10
Abstract
Abstract A machine for forming repetitively impressioned dough sheets with transverse and longitudinal perforations for the manufacture of Soda Crackers wherein a continuous sheet of dough is impressed with the longitudinal and transverse perforations by a marking roll co-operating with a backing roll and the continuous sheet is cut by a knife rotating in phase with the marking roll along selected transverse rows of perforations by moving the backing row towards the knife at appropriate intervals.
Inventors
- 👤 G Steels
- 👤 S Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:32
CPC Classifications
A; A21; A21C; A21C11/00; A21C11/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
192 words
A machine for forming repetitively impressioned dough sheets of predetermined length from a continuous sheet of dough comprising a belt for carrying a continuous dough sheet, backing roll means in contact with an undersurface of the belt, an impression roll above the belt, axially extending serrated blades on the marking roll for repetitively marking the sheet by rotation of said roll, said blades being interspaced by gaps, all but one of said gaps being equal with the unequal gap being twice the size of the others to produce equally interspaced transverse rows of perforations in the dough sheet with one row of perforations being omitted for each revolution of the marking roll, a transverse serrated rotary knife above the belt downstream of the marking roll, means for rotating the knife in phase with the unequal gap of the marking roll to produce one of said omitted rows of perforations in the dough sheet for each revolution of the knife, and means for relatively moving the backing roll means and the knife towards one another during selected revolutions of the knife to cut the dough sheet along a row of said omitted perforations.
Claim 2
Dependent Claim
192 words
A machine for forming repetitively impressioned dough sheets of predetermined length from a continuous sheet of dough comprising a belt for carrying a continuous dough sheet, backing roll means in contact with an undersurface of the belt, an impression roll above the belt, axially extending serrated blades on the marking roll for repetitively marking the sheet by rotation of said roll, said blades being interspaced by gaps, all but one of said gaps being equal with the unequal gap being twice the size of the others to produce equally interspaced transverse rows of perforations in the dough sheet with one row of perforations being omitted for each revolution of the marking roll, a transverse serrated rotary knife above the belt downstream of the marking roll, means for rotating the knife in phase with the unequal gap of the marking roll to produce one of said omitted rows of perforations in the dough sheet for each revolution of the knife, and means for relatively moving the backing roll means and the knife towards one another during selected revolutions of the knife to cut the dough sheet along a row of said omitted perforations.
Claim 3
Dependent Claim
26 words
The machine of claim 1 including axially spaced circumferentially extending serrated blades on the marking roll for forming longitudinal rows of perforations in the dough sheet.
Claim 4
Dependent Claim
15 words
The machine of claim 1 wherein the backing roll means comprises a single backing roll.
Claim 5
Dependent Claim
39 words
The machine of claim 3 including means for moving the backing roll towards the knife to provide the relative movement between the backing roll and the knife without affecting the distance between the backing roll and the marking roll.
Claim 6
Dependent Claim
42 words
The machine of claim 4 wherein the marking roll and cutting knife have fixed axes and the backing roll is mounted on a swinging frame for pivotal movement about the axis of the marking roll towards and away rom the cutting knife.
Claim 7
Dependent Claim
35 words
The machine of claim 5 wherein a cam-operated piston and cylinder assembly is provided for pivoting the tilting frame to move the backing roll towards the cutting knife during said selected revolutions of the knife.
Claim 8
Dependent Claim
25 words
The machine of claim 6 wherein a common suitably phased drive means is provided for rotating the marking roll, the cutting knife and the cam.
Claim 9
Dependent Claim
32 words
The machine of claim 5 wherein the backing roll has an eccentric mounting in the swinging frame so that the distance between the backing roll and the marking roll can be adjusted.
Claim 10
Dependent Claim
39 words
The machine of claim 5 wherein the swinging frame has an eccentric mounting to enable the distance between the backing roll and the knife to be adjusted without affecting the distance between the backing roll and the marking roll.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |