US747056A - Reversing-gear. - Google Patents

Description

PATENTED DEC. l5, 1908.

C. FELSING, JR. REVERSING GEAR.

APPLIUATION FILED APR. 3.

No MobEL.

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UNITED TATES Patented December 15, 1903.

ooNRAD EELsgINc., JR., oE KPENICK, NEAR BERLIN, GERMANY.

REVESING=GEAH.

SPECIFICATION forming part of Letters Patent No. 747,056, dated December 15, 190'3.

I Application led April 3| 1903. Serial No. 150.933.l (No model.)

To owl whom t may concern:

Be it known that I, CONRAD FELSING, Jr., a Subject of the King of Prussia, Emperor of Germany, residing at Kpenick, near Berlin, in the Kingdom of Prussia, German Empire, have invented certain new and useful Improvements in Reversing-Gears, of which the following is a specification.

My invention relates to improvements in reversing-gears or mechanisms adapted for automatically reversing the movement of certain parts, accomplishing,r a reciprocating motion. This mechanism comprises a Hat rail carrying a throw-out, said flat rail being shifted a certain distance by a finger carried by the part subjected to the reciprocating motion. Further, said mechanism is composed of a fulcrumed locking-lever provided with notches, in which latter engage catches fixed to said fiat rail, the throw-out being retained-in its position by means 0f springs. Owing to this disposition, when the hat rail is displaced in a longitudinal direction the springs acting on the throw-out are lirst eX- panded by the action of the one'of the named catches and of said locking-lever. after the vone catch is disengaged from the locking-lever through the influence of the other catch and the latter has rotated the locking-lever about its fulcrum the throwout is pulled along by means of said springs.

In the accompanying drawings, forming a part of this specification, and in which similar numerals of reference indicate similar parts throughout the several views, Figure 1 is a plan, Fi, 2 a front elevation, of a machine provided with the new mechanism. On the upper part of the pedestals 1 the iiat rail 2 is supported by the bearings 3, which flat rail may of course be connected to any other suitable part of the machine. The 4hat rail 2 is provided with the two blocks 4 and 5, against which the finger at the front of the reciprocating carriage 6 abut-s, so that said fiat rail 2 at the one or the other end of the travel of said carriage 6 is moved alonga certain distance with the latter. Further, the

The back of the throw- Further,

out 9 is provided on each side with a clutch, the teeth of the one clutch lying opposite with regard to the teeth of the other clutch, said teeth meshing with the corresponding teeth of the clutches provided on the side of the bevel-Wheels A and B, respectively, and said bevel-wheels A and B, by means of an intermediate bevel-wheel, being adapted to drive in the one direction or in the other the screw-threaded shaft of the machine, along which the carriage 6 has to accomplish its 1ongitudinal reciprocating motion. The throwout 9 is also provided with the arms 10 and l1, receiving the one end of each of the springs or coils 12, the other ends of which are connected to the cross-bars 7 and 8. In order to steady this part of the mechanism, the springs or coils 12 are guided by means of the cylindrical rods 13. The arm 11 and' the cross-bar 8 are provided with the catches 14 and 15, respectively, the catch 14 of the arm 11 being adapted to engage with the notch 16 of the locking-lever `18, while the catch 15, formed at the lower part of the cross-bar 8, is adapted to engage with the notch 17 of said locking-lever 18. The latter is fulcrumed or pivoted to the one of the pedestals 1 of the machine and is subjected to the action of a spiral spring or coil 19. The notch 16 of the locking-lever 18 has a rectangular shape corresponding to the form ofthe catch 14, while the notch 17 of said locking-lever 18 has an oblong form and is provided on each side with a chamfering, so that when the catch 15 of the cross-bar 8 during its longitudinal movement reaches the one or the other lateral chamfering of the notch 17 and slides along the same the locking-lever 18 is turned around its fulcrum in the direction ofthe arrow 20. Consequently the catch 14, which either engages with the notch 1G or rests against the lateral surface 23 of the locking-lever 18 and which expands the springs cr coils l2 on the one or the other side during the longitudinal displacement of the Iiat rail 2, is released, and the throw-out 9 is pulled in the opposite direction, so that the bevel-wheel B is thrown in gear, and the carriage 6 is moved in a direction opposite to the preceding one after the bevel-wheel A has been thrown out of gear. The contrary action takes place when the flat rail 2 is moved in the opposite direction. Of course the bevel- ICO fr) C Vel gear, in which the bevel-wheels A and B are alternatively thrown in and out of gear, can be replaced by any other suitable arrangement-for example, by pulleys working together in a convenient manner.

The mode of operation of the new mechanism is the following: As the carriage 6 moves, with its finger, in the direction of the arrow 21 said finger at the end of the travel of the carriage 6 strikes against the block 5 of the at rail 2, whereby the latter is shifted in the direction of the arrow 22. At the same time the catch 14 of the throw-out 9 abuts against the lateral surface 23 of the locking-lever 18, so that the springs or coils 12, fixed to the cross-bar 8, are expanded, and the throw-out 9 remains in engagement with the bevel-wheel A until the cross-bar 8 reaches the right lateral chamfering of the notch 17 of the lockinglever 18. Consequently the latter turns about its fulcrum in the direction of the arrow 20,and the throw-out 9 is released, whereafter the latter is moved in the direction of the arrow 24- that is, of the bevel-wheel B. Now the latter is thrown in gear, so that the reversing of the motion of the carriage 6 is due to the fact that the threaded shaft of the machine turns in the opposite direction. On account of this reversal of motion the locking-lever 18, by means of the spiral spring or coil 19, returns in its normal position and the catch 14 engages with the notch 16 of the lockinglever 18. If now during the return motion the finger of the carriage 6 strikes against the block 4 of the flat rail 2 and shifts the latter along, a tension or expansion ofthe springs or coils 12, Xed to the cross-bar 7, takes place, because the catch 14 is in engagement with the notch 16 of the lockinglever 18. Further, the catch 15, which is in engagement with the notch 17, acts on the left chamfering of said notch 17 of the locking-lever 18, so that the latter is pressed down and turns about its fnlcrum. Consequently the throw-out 9, through the action of the springs or coils 12, fixed to the cross-bar 7, is pulled to the left, so that the bevel-wheel A is thrown in gear. The above-described cycle of operations is periodically repeated during the further motion of the machine.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. In a reversing-gear, the combination with a threaded shaft, of a part adapted to reciprocate on said threaded shaft, a flat rail adapted to be displaced by said reciprocating parta certain distance in a longitudinal direction, a spring-actuated throw-out adapted to be moved along by said flat rail, said throwout being provided with alateral catch,means vcoperating with the throw-outforcontrolling the threaded shaft along which the reciprocating part moves, and a fulcrumed lockinglever provided with a notch adapted to receive the lateral catch of said throw-out.

2. In a reversing-gear, the combination with a threaded shaft, of a part adapted to reciprocate on said threaded shaft, a at rail adapted to be displaced by said reciprocatingv part a certain distance in a longitudinal direction, a spring-actuated throw-out adapted to be moved along by said flat rail, said throwout being provided with a lateral catch, two oppositely-lying clutches disposed on both sides of the end of the throw-out, two bevelwheels, each provided on its-inner side with a clutch adapted to engage with the corresponding clutch at the end of the throw-out, an intermediate bevel-wheel meshing with said two bevel-wheels, said three bevel-wheels controlling the threaded shaft along which the part mounted thereon reciprocates, and a fulcrumed locking-lever provided with a notch adapted to receive the lateral catch of said throw-out. V

3. In a reversing-gear, the combination with a threaded shaft, of a part adapted to reciprocate on said threaded shaft, a finger carried by said reciprocating part, a flat rail 2 adapted to be displaced a certain distance in a longitudinal direction, the blocks 4 and 5 supported by said fiat rail 2 and adapted to be shifted along together with the rail 2 by said nger, the cross-bars 7 and 8 xed to the flat rail 2, the one cross-bar8being provided with a catch 15, the throw-out 9 slidably mounted on said dat rail 2 between said crossbarsl 7, 8 and provided with the catch 14, means cooperating with the throw-out 9 for controlling the threaded shaft on which the part carrying said finger is mounted, the spiral springs or coils 12 disposed between the throw-out 9 and the cross-bars 7, 8, and the spring-actuated fulcrumed locking-lever 18, the latter being provided withva rectangular notch 16 adapted to receive the catch 14 of the throw-out9 and with an oblong notch 17 provided with a chamfering on each side, said notch 17 being adapted to receive the catch 15 of the cross-bar 8, substantially as set forth.

4. In a y'reversing-gear, the combination with a threaded shaft, of a carriage 6 adapted to reciprocate on said threaded shaft, a finger at the front of said carriage 6, a Hat rail 2 adapted to be displaced a certain distance in a longitudinal direction, the blocks 4 and 5 supported by said flat rail 2 and adapted to be shifted along together with the rail by said finger, the cross -bars 7 and 8 fixed to the at rail 2, the one cross-bar8 being pro vided with a catch 15, the throw-out 9 slidably mounted on said flat rail 2 between said cross-bars 7, 8 and provided with the catch 14, the two oppositely -lying clutchesv disposed on both sides of the back of the throwout 9, the bevel-wheels A and B both provided on their inner side with a clutch adapted to engage with the corresponding clutch at the backof the threw-out 9, an intermediate bevel-wheel meshing with the bevelwheels A and B, said bevel-wheels controlling the threaded shaft on which the carriage IOO IIO

6 is mounted, J[he spiral springs or coils 12 17 being adapted to receive the catch 15 of disposed between the throw-out 9 and the l the cross-bar 8, substantially as set forth. cross-bars 7, 8, the rods 13 adapted to guide In Witness whereof I have hereunto signed the springs or coils 12, the fulcrurned lockmyname this 19th day of March, 1903, in the 5 ing-lever 18, and the spiral spring.; or coil 19 presence of two subscribing Witnesses.

acting on said locking-lever 18, the latter being provided With a rectangular' notch 16 CONRAD FELSING JUN adapted to receive the catch 14 of the throw- Witnesses: out 9 and with an oblong notch 17 provided AUGUST HIRSCH, zo with a, chamfering on each side, Said notch OTTO NEUMANN.

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