US3604241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad spike straightener
Assignee: Oak Industries Inc
•
Filing: 1969-02-06
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Granted: 1971-09-14
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Expires: 1989-02-06
Abstract
Abstract A spike straightener for straightening spikes used along railroad tracks. On any suitable carrier, for example, a railroad car, a spike-straightening unit is provided which is power driven but is controlled by the operator who has to use at least two handles to actuate it, thereby preventing unintended actuation against a hand of the operator. One power unit is effective to operate a cleaning device and another the straightening device.
Inventors
- 👤 Weltzin B Blix Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:45
CPC Classifications
B; B25; B25C; B25C13/00; B21; B21G; B21G3/00; E; E01; E01B; E01B31/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
209 words
In a spike straightening device adapted for railroad use, a frame, rail engaging flanged wheels on the frame so that the device is movable along the rails of a railroad track, a support on the frame at a level commensurate with the operative level of a seated operator, a spike-straightening press mounted on said support and including a lower anvil and an upper die, the lower anvil being channeled to receive inserted spike shanks, the upper die being correspondingly channeled to engage the spike shanks, means for normally holding the die upwardly withdrawn from the anvil, whereby to permit manual insertion of the spike shanks in the anvil, hydraulic pressure means for forcing the die downwardly against the anvil, whereby to straighten the spikes, a valve system for actuating the hydraulic means, such valve system responding only to the simultaneous manual actuation of two control handles, whereby the hands of the operator are withdrawn from the downward path of the die when it is actuated, an operator''s station on the frame for a seated operator facing and directly adjacent the press and control handles, and a receptacle on the frame at the general level of the support and contiguous to the operator''s station for holding spikes to be straightened.
Claim 2
Dependent Claim
209 words
In a spike straightening device adapted for railroad use, a frame, rail engaging flanged wheels on the frame so that the device is movable along the rails of a railroad track, a support on the frame at a level commensurate with the operative level of a seated operator, a spike-straightening press mounted on said support and including a lower anvil and an upper die, the lower anvil being channeled to receive inserted spike shanks, the upper die being correspondingly channeled to engage the spike shanks, means for normally holding the die upwardly withdrawn from the anvil, whereby to permit manual insertion of the spike shanks in the anvil, hydraulic pressure means for forcing the die downwardly against the anvil, whereby to straighten the spikes, a valve system for actuating the hydraulic means, such valve system responding only to the simultaneous manual actuation of two control handles, whereby the hands of the operator are withdrawn from the downward path of the die when it is actuated, an operator''s station on the frame for a seated operator facing and directly adjacent the press and control handles, and a receptacle on the frame at the general level of the support and contiguous to the operator''s station for holding spikes to be straightened.
Claim 3
Dependent Claim
45 words
The structure of claim 1 characterized in that the lower anvil and upper die channels have walls diverging at an angle of the order of 45*, whereby the pressure of the upper die is effective to straighten the spikes, regardless of their direction of bend.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |