US3752201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Veneer lathe charger
Assignee: Individual
•
Filing: 1972-05-25
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Granted: 1973-08-14
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Expires: 1992-05-25
Abstract
Abstract A simple linkage is provided for transferring cylindrical blocks of wood in horizontal movement from the yokes of a pre-centering cradle to the chucks of a veneer lathe. The block is transferred by a pair of chucking arms which grip the ends of the block at points off center from the lathe chucking centers. The blocks are carried by the lower ends of the chucking arms which swing in a complex movement from overhead supporting mechanism. The movements of the chucking arms are controlled by wheels rolling on a pair of cam plates and a pair of link arms which together impart approximately straight line horizontal movement to the blocks instead of an undesirable arcuate path of movement.
Inventors
- 👤 E Heth
- 👤 J Tidland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:33
CPC Classifications
B; B27; B27L; B27L5/00; B27L5/02; B27L5/022
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
176 words
A veneer lathe charger for transferring cylindrical blocks in approximately straight line horizontal movement to the lathe chucks from a pre-centered position in a location at one side of the lathe, comprising a charger pivot frame having a pair of depending chucking arms at opposite ends of said frame with chucking plates arranged to clamp the opposite ends of the block in off center positions at said location, a pair of wheels on a lower portion of said pivot frame at said opposite ends thereof, a pair of cam plates supporting said wheels for travel thereon, a pair of transversely extending link arms pivotally connected at one end to an upper portion of said pivot frame at opposite ends thereof, the opposite ends of said link arms being connected to stationary pivot means, and means for moving said lower portion of said pivot frame on said cam plates, said cam plates having inclined tracks for said wheels which move said chucking plates in approximately straight horizontal paths of travel from said location to said lathe chucks.
Claim 2
Dependent Claim
176 words
A veneer lathe charger for transferring cylindrical blocks in approximately straight line horizontal movement to the lathe chucks from a pre-centered position in a location at one side of the lathe, comprising a charger pivot frame having a pair of depending chucking arms at opposite ends of said frame with chucking plates arranged to clamp the opposite ends of the block in off center positions at said location, a pair of wheels on a lower portion of said pivot frame at said opposite ends thereof, a pair of cam plates supporting said wheels for travel thereon, a pair of transversely extending link arms pivotally connected at one end to an upper portion of said pivot frame at opposite ends thereof, the opposite ends of said link arms being connected to stationary pivot means, and means for moving said lower portion of said pivot frame on said cam plates, said cam plates having inclined tracks for said wheels which move said chucking plates in approximately straight horizontal paths of travel from said location to said lathe chucks.
Claim 3
Dependent Claim
24 words
A charger as defined in claim 1, said moving means comprising cylinder and piston units connected to said lower portion of said pivot frame.
Claim 4
Dependent Claim
35 words
A charger as defined in claim 1, said cam plate tracks having an upward inclination to guide the first part of said movement and a downward inclination to guide the latter part of said movement.
Claim 5
Dependent Claim
32 words
A charger as defined in claim 3, the highest point of said cam tracks being approximately directly under the axis of the pivotal connections between said link arms and said pivot frame.
Claim 6
Dependent Claim
27 words
A charger as defined in claim 3 including shock absorbers arranged to arrest the movement of said pivot frame at the lower end of said downward iNclination.
Claim 7
Dependent Claim
28 words
A charger as defined in claim 1, said pivot frame having an upper longitudinal shaft connected to said link arms and a lower longitudinal shaft carrying said wheels.
Claim 8
Dependent Claim
21 words
A charger as defined in claim 6, said chucking arms being mounted for sliding movement on said upper and lower shafts.
Claim 9
Dependent Claim
23 words
A charger as defined in claim 7 including cylinder and piston means for moving said chucking arms on said upper and lower shafts.
Claim 10
Dependent Claim
53 words
A charger as defined in claim 8, said cylinder and piston means comprising a first cylinder and piston unit connected between the center of said pivot frame and one of said chucking arms and a second cylinder and piston unit connected between the center of said pivot frame and the other chucking arm.
Claim 11
Dependent Claim
32 words
A charger as defined in claim 1, each of said chucking plates having an inner arc of pointed cylindrical pins and an outer arc of sharpened semi-circular spikes to engage said block.
Claim 12
Dependent Claim
15 words
A charger as defined in claim 1 including means to adjust said cam plates longitudinally.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |