US4181994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing shoes
Assignee: Fortuna Werke Maschinenfabrik GmbH
•
Filing: 1977-11-28
•
Granted: 1980-01-08
•
Expires: 1997-11-28
Abstract
Abstract An apparatus for manufacturing shoes characterized by shoe lasts arranged on a conveyor with a paired alternating arrangement with the shoe toes alternately pointing in opposite directions, and by a template adapted to be moved parallel to the conveyor backwards and forwards and on the edge of which there engage mutually touching spring loaded end parts of two independently arranged control linkages, the control linkages being connected with shoe bottom part processing tools arranged at their other ends. The speed of travel of the template in the two directions is held substantially equal to the speed of advance of the conveyor.
Inventors
- 👤 Ernst Gruber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:27
CPC Classifications
A; A43; A43D; A43D37/00; A43D111/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
146 words
In an apparatus for manufacturing shoes comprising an endless circulating conveyor adapted to hold shoes upside down in a detachable manner and tools arranged in a row for processing the shoe bottom parts, with individual shoe lasts arranged on the conveyor in a paired alternating arrangement with the shoe toes alternately pointing in opposite directions the improvement comprising, a template having an edge corresponding to the contour of shoe bottom parts to be worked and adapted to be moved parallel to the conveyor backwards and forwards, two independently arranged control linkages having spring-biased end parts, respectively, engaging said edge of said template on mutually opposite long sides thereof, shoe bottom part processing tools connected to other ends of said control linkages, respectively, means for maintaining the speed of advance of the conveyor substantially equal to the speed of travel of said template in the two directions.
Claim 2
Dependent Claim
146 words
In an apparatus for manufacturing shoes comprising an endless circulating conveyor adapted to hold shoes upside down in a detachable manner and tools arranged in a row for processing the shoe bottom parts, with individual shoe lasts arranged on the conveyor in a paired alternating arrangement with the shoe toes alternately pointing in opposite directions the improvement comprising, a template having an edge corresponding to the contour of shoe bottom parts to be worked and adapted to be moved parallel to the conveyor backwards and forwards, two independently arranged control linkages having spring-biased end parts, respectively, engaging said edge of said template on mutually opposite long sides thereof, shoe bottom part processing tools connected to other ends of said control linkages, respectively, means for maintaining the speed of advance of the conveyor substantially equal to the speed of travel of said template in the two directions.
Claim 3
Dependent Claim
49 words
An apparatus in accordance with claim 1, wherein said control linkages have said end parts resting against said edge of said template in a single plane opposite each other and with a spring biasing action, and supports operatively support said other ends of said control linkages and said tools.
Claim 4
Dependent Claim
37 words
An apparatus in accordance with claim 1 further comprising a threaded spindle, a carriage is operatively mounted on said threaded spindle, said template is detachably connected with said carriage, a motor is connected to said threaded spindle.
Claim 5
Dependent Claim
27 words
An apparatus in accordance with claim 2, further comprising means for moveably mounting said supports and said tools for movement thereof in planes both horizontally and vertically.
Claim 6
Dependent Claim
54 words
An apparatus in accordance with claim 3, characterized in that said individual shoe lasts each include a respective operating rail (37 and 38 respectively) arranged on longitudinal sides thereof and switching contact means (39 and 40, respectively) slidably cooperates with each said operating rail for respectively turning on and off and reversing said motor.
Claim 7
Dependent Claim
30 words
An apparatus in accordance with claim 1, further comprising cylinder means having a solenoid regulating valve for vertically adjusting an engagement pressure of said tools on said shoe bottom parts.
Claim 8
Dependent Claim
65 words
The apparatus as set forth in claim 1, wherein adjacent of said individual shoe lasts have said respective operating rail located offset in height relative to each other, said adjacent of said shoe lasts are mounted so as to receive shoes thereon in upside down reversed position relative to each other, said switching contact means for turning-on said motor during engagement on said operating rail.
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) | 1983-01-07 | 1983-07-09 | 1984-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-07 | 1987-07-09 | 1988-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-07 | 1991-07-09 | 1992-01-08 | $7700.00 | Window Closed / Lapsed |