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Description: |
| Wood & Wood - patent attorneys
Having described our invention, we claim:
1. In a carriage-feed, a feed-shaft, transmitting devices thereon for propelling the carriage, a clutch between said feed-shaft and said transmitting devices, a lever for throwing said clutch, an adjustable bracket on the lathe-bed, a rock-shaft journaled on the outside of the apron, having a radial arm, a pushpin journaled in the carriage, one end of which engages the said radial arm, the other end being adapted to be engaged and deflected by said bracket, a trip-cam on said rock-shaft adapted to engage the said clutch-lever and trip the same when the carriage meets the adjustable bracket, substantially as described.
2. In a carriage-feed, a slow-feed shaft and a high-speed shaft, transmitting devices comprising reversing gear-wheels on the slow-feed shaft for propelling the carriage, means for throwing into operation or idle position said gear-wheels, transmitting devices comprising reversing gear-wheels on the high-speed shaft for propelling the carriage, means for tin-owing said gears into operation or idle position, and a locking device between the two sets of transmitting devices, whereby they are alternately locked and released, substantially as described.
3. In a carriage-feed, a stationary screw-rod, a slow-feed shaft and a high-speed shaft, one set of transmitting devices comprising reversing gear-wheels between the slow-feed shaft anrl the screw-rod, means for throwing said gear-wheels into train or into idle position, a second set of transmitting devices comprising reversing gear-wheels between the high-speed shaft and the screw-roil, means for throwing said gear-wheels into train or into idle position, levers for controlling the two independent sets of reversing gear-wheels, and a locking-bar between said levers, adapted to lock one lever in engaging position while the other is in idle position, substantially as described.
4. In a carriage-feed, a stationary screw-rod, a slow-feed shaft and a high-speed shaft, a sleeve-nut on the screw-rod, transmitting devices including reversing gear-wheels between the said sleeve-nut and the slow-feed shaft, a lever for controlling said reversing gear-wheels, transmitting devices including reversing gear-wheels between the high-speed shaft and the said sleeve-nut, a lever for controlling said reversing gear-wheels, a locking-bar movably mounted between the said two levers, the said levers being provided with detents adapted to be alternately engaged by the opposite ends of said locking-bar when it is shifted in opposite directions whereby the said slow feed and high speed are independently available, substantially as described.
5. In a carriage-feed, a slow-feed shaft and a high-speed shaft, independent sets of transmitting devices, on each of said shafts for propelling the carriage,' levers for independently controlling said transmitting devices, and a locking device between the said levers adapted to lock one lever when the other lever is released and vice versa, whereby said slow feed and high speed can only be used independently, substantially as described.
6. In a carriage-feed, comprising two sets of transmitting devices, for independently propelling the carriage, levers for throwing either of the sets of transmitting devices into train or idle position, a shifting lock-bar supported between said levers, the said levers being provided with detents opposed when both of said levers are in idle position, and adapted to be alternately engaged by said lock-bar, said levers each having a bearing-surface adapted to be alternately opposed to opposite ends of said lock-bar, whereby said bar can only be shifted from one detent to the other, when the levers are both in idle position, substantially as described.
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