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US3684273A
Expired / Lapsed
US
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Cloth feed control for spreading machine
Assignee: Cutters Machine Co Inc
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Filing: 1970-05-04
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Granted: 1972-08-15
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Expires: 1990-05-04
Abstract
Abstract A cloth spreading machine supporting a cloth roll, a spreader unit, and means positively feeding the cloth from the roll to the spreader unit, a main drive motor for reciprocably moving the machine longitudinally over a cloth spreading table, a feed motor for driving the cloth feed means, a motor control circuit and a feed control circuit electrically coupled together for respectively energizing the main drive motor and the feed motor at corresponding varying speeds, a dancer roller responsive to the tension in the cloth and an overfeed potentiometer in the feed control circuit and operatively responsive to the movement of the dancer roller to vary the speed of the feed motor in order to supply the cloth feed demands of the spreading machine.
Inventors
- 👤 Robert W Benson
- 👤 Robert G Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:19
CPC Classifications
A; A41; A41H; A41H43/00; A41H43/005
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
198 words
In a cloth spreading machine having a frame movable longitudinally over a spreading surface and having a cloth supply and spreader means for spreading cloth from said supply on said surface, an electrical cloth feed control comprising: a. a main drive motor, b. means operatively connecting said main motor to said frame for moving said frame, c. means for controlling said main motor to operate at different speeds, d. cloth feed means for positively feeding said cloth from said supply to said spreader means, including an electric feed motor, e. an electrical feed control circuit communicating with said feed motor to operate said feed motor at different speeds. f. means electrically coupling said feed control circuit to said main motor controlling means so that the speeds of said feed motor and said main motor vary substantially proportionally and simultaneously, g. a feed potentiometer in said feed control circuit, h. means responsive to the feed speed of said cloth and operatively connected to said potentiometer to vary the speed of said feed motor relative to the speed of said main motor, in order to maintain the feed speed of said cloth and the speed of said frame substantially equal.
Claim 2
Dependent Claim
198 words
In a cloth spreading machine having a frame movable longitudinally over a spreading surface and having a cloth supply and spreader means for spreading cloth from said supply on said surface, an electrical cloth feed control comprising: a. a main drive motor, b. means operatively connecting said main motor to said frame for moving said frame, c. means for controlling said main motor to operate at different speeds, d. cloth feed means for positively feeding said cloth from said supply to said spreader means, including an electric feed motor, e. an electrical feed control circuit communicating with said feed motor to operate said feed motor at different speeds. f. means electrically coupling said feed control circuit to said main motor controlling means so that the speeds of said feed motor and said main motor vary substantially proportionally and simultaneously, g. a feed potentiometer in said feed control circuit, h. means responsive to the feed speed of said cloth and operatively connected to said potentiometer to vary the speed of said feed motor relative to the speed of said main motor, in order to maintain the feed speed of said cloth and the speed of said frame substantially equal.
Claim 3
Dependent Claim
90 words
The invention according to claim 1 in which the means resPonsive to the feed speed of said cloth comprises a dancer roller supporting cloth between said supply and said spreader means, arm means supporting said dancer roller and movably mounted on said frame to vary the length of the cloth path from said supply to said spreader means in response to the tension in said cloth, said potentiometer being operatively connected to said arm means to vary the resistance in said potentiometer corresponding to the movement of said dancer roller.
Claim 4
Dependent Claim
61 words
The invention according to claim 2 in which said arm means has a free end and a journal end, said dancer roller being journaled in said free end, and means pivotally mounting said journal end on said frame for pivotal movement of said dancer roller, means operatively connecting said dancer roller to said feed motor for positively driving said dancer roller.
Claim 5
Dependent Claim
44 words
The invention according to claim 3 in which said cloth supply comprises a cloth roll, said cloth feed means further comprises a cloth supply feed means for positively unwinding said cloth roll, means operatively connecting said cloth supply feed means to said feed motor.
Claim 6
Dependent Claim
76 words
The invention according to claim 1 in which said main circuit motor controlling means comprises a main motor control circuit, a reversing circuit connecting said main motor control circuit to said main drive motor, reversing switch means responsive to the longitudinal position of said frame relative to said spreading surface for actuating said reversing circuit to reverse the direction of said main drive motor, said reversing circuit and said feed control circuit being connected in parallel.
Claim 7
Dependent Claim
40 words
The invention according to claim 1 further comprising speed switch means responsive to the longitudinal position of said frame relative to said spreading surface for energizing said main motor controlling means to change the speed of said main drive motor.
Claim 8
Dependent Claim
59 words
The invention according to claim 1 in which said main motor controlling means transmits a signal to said feed control circuit corresponding to the input voltage to said main drive motor, said feed potentiometer varying said signal by an amount corresponding to the difference in the actual feed speed of said cloth and the longitudinal speed of said frame.
Claim 9
Dependent Claim
59 words
The invention according to claim 1 in which said main motor controlling means comprises a main motor drive circuit, a braking resistor, a main motor armature circuit, and selective switch means for connecting said armature circuit alternately with said drive circuit and said braking resistor, said coupling means connecting said feed control circuit to said main motor armature circuit.
Claim 10
Dependent Claim
22 words
The invention according according to claim 8 further comprising speed control means for varying the speed of said main motor drive circuit.
Claim 11
Dependent Claim
75 words
The invention according to claim 1 in which said feed control circuit comprises an SCR bridge circuit connected to said feed motor, a source of alternating current for said feed motor, and electronic timing means responsive to an input signal from said main motor controlling means, to render one of said SCR''s in said bridge circuit conductive for a predetermined period of time in each A.C. cycle corresponding to the magnitude of said input signal.
Claim 12
Dependent Claim
130 words
In a cloth spreading machine having a frame movable longitudinally over a spreading surface and having a cloth supply and spreader means for spreading cloth from said supply on said surface, an electrical cloth feed control comprising: a. sensing means detecting the longitudinal speed of said frame relative to said spreading surface, and producing an electrical signal continuously proportional to said frame speed, b. cloth feed means for positively feeding cloth from said supply to said spreader means, including an electric feed motor, c. an electrical feed control circuit communicating with said feed motor to drive said feed motor at variable speeds, d. said feed control circuit being responsive to said signal from said sensing means to drive said feed motor at a speed continuously proportional to said frame speed.
Claim 13
Dependent Claim
130 words
In a cloth spreading machine having a frame movable longitudinally over a spreading surface and having a cloth supply and spreader means for spreading cloth from said supply on said surface, an electrical cloth feed control comprising: a. sensing means detecting the longitudinal speed of said frame relative to said spreading surface, and producing an electrical signal continuously proportional to said frame speed, b. cloth feed means for positively feeding cloth from said supply to said spreader means, including an electric feed motor, c. an electrical feed control circuit communicating with said feed motor to drive said feed motor at variable speeds, d. said feed control circuit being responsive to said signal from said sensing means to drive said feed motor at a speed continuously proportional to said frame speed.
Claim 14
Dependent Claim
25 words
The invention according to claim 11 further comprising electrical motive means for moving said frame, said sensing means detecting the speed of said motive means.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |