US1911523A

US1911523A - menschner

Info

Publication number: US1911523A
Authority: US
Publication date: 1933-05-30
Anticipated expiration: 1950-05-30

Description

May 30, 1933.

J. MENSCHNER CARD SAVING MOTION FOR JACQUARDS Filed Feb. 4, 1930 2 Sheets-Sheet 1 y 30, .1933- J. MENSCHNER I ,523

7 CARD SAVING MOTION FOR JACQUIARDS Filed Feb. 4, 1950 2 Sheets-Sheet 2 v N W Patented May 36, 1933 UNITED STATES PATENTOFFICE JOHANNES MENSCHNER, OF ROSSWEIN, GERMANY, AS SIGNO B T KOCH 8c TE KOCH,v

A FIRM, or oELsNIrz, GERMANY CARD SAVING MOTION FOR JACQUARDS Application filed. February 4, 1930, Serial No. 425,762,-and in Germany Februar 's, 1929. I

Thisinvention relates to a card saving motion for jacquard operating mechanisms, the obj ect of the present invention being to provide a card saving motion or multiplier of greater utility, than existing motions of this kind.

For this purpose the invention consists in the provision of a timing disc for each of certain of the griif hooks, each of said timing discs being adapted to release the further feed of the jacquardcard after a variable predetermined number of picks. The griff mechanism is kept stationary for the same predetermined number of picks.

Such a card saving -motion, within the maximum number of repetitions permitted by its timing discs, enables any desired work to be so controlled that the jacquard cards remain at rest during every period of repetition which occurs. It is only necessaryto have the proper markings on the cards whether it be the main card or a specialsaw.

ing card and from such markings the operation of the mechanism may manually be placed in operation. I ,1

According to the invention the card saving motion mechanism is more particularly actuated directly by the grid hooks by the provision of transmission rods whereby eachgrifi hook directlydrives its own timing disc which provides for .the desired number of repetitions.

The accompanying drawings illustrate one constructional example of card saving mechanism according to the present invention. Fig. 1 is a diagrammatic side view partly inseotion and Fig. 2 is aview at right angles to Fig. 1. V

The card cylinder shown by dotted lines is designated by the reference numeral 1 and the arrow 2a indicates the direction of the pull effected by any selected griff hook 2. Movement of griff hook is transmitted by a bell crank lever 3 and rod 4 to the card mechanism, whilst a spring 5 acting in the direction of the arrow 5a against a stop 6 on the rod returns the grii'f hook to its original position after every actuation. The rod 4 transmits its movement by a lewer 7 to a shaft 8 and through the shaft to a lever 9. Arms 12 mounted in bearings 11 at both sides of the frame or mechanism support a shaft 15 carried bythe arms 12 on which are freely rotatable side by side a plurality of feeler members 16,. for example, ten of them. Cams 13 on a driving shaft 14 cooperate with rolls 46 on the shaft 15and impart thereto an up and down motion together with its arms 12 and the several feeler members 16. Although not shown on the drawings it is to be understood that there will bean equal number oflevers 9 and 7,'rods 6 and griif hooks2. The upper end 18 of each feeler member 16 is con-- structed in the form of a pawl which is pressed by a spring 17 towards a timing disc 19, one of which is provided for each feeler member, the timing discs being loosely mounted side by side on a shaft 20. The pawls 18 can only follow the pull of the spring 17 when the corresponding lever 9 is pulled by the griff hook appertaining thereto and when it has assumed the position shown in Fig. 1. The discs 19 have ratchet teeth spaced and of such a pitch that at every upward motion during the operation of the machine a feeler member 16 released by the pullof its grid hook,

feeds its timing disc forward a'distance of onetooth.. Thus, all feeler members 16 are swinging 'up and. down in such fashion that they do not engage their appertaining counting discs. leased by the pull of its grifl' hook moves into engagement with its counting disc. It slides (during its downward movement) simply over the back of a tooth and drops into the recess of the next tooth. During its upward movement, it is again fed forward for one tooth and this is repeated'until it drops into the deep groove which leads to the forwardfeeding ofv the cylinder shaft. Then the griff hook pull of this feeler member stops and a spring 5 begins to act, whereupon the feeler member is pulled out of said deep groove by means of lever 9' and the said spring 5. On each of these discs at a distance apart equal to. a certain number of ratchet teeth which varies on each disc, there is. a deep notch 10 into Only that feeler which is rewith it an arm 23 on the same shaft.

tance of one. tooth. When the pull of the griff hook relaxes, the feeler 'member 16 is swung back about its pivotal shaft .15 by means of the lever 9 acted on by the spring and the arm 23. also leaves its effective position under the action of a spring 26 and an eccentric 27, on a shaft which is driven by a gear on shaft 42, so that it only effects a single forward feed until it is again brought into its effective position .by another feeler member after the lapse of a further number of picks. The timing discs must be so arranged that on each disc the number of notches will divide one or more times into the number of ratchet teeth. Therefore they will not all be of the same diameter and the pitch of the ratchet teeth will vary to some extent with the length of the downwardstroke, of the feeler members. 1 l In case the use of the card saving motion should appear to be temporarily or for a time wholly of no advantage, perhaps because cards of identical punching are only. to repeattwo or three times, the following mechanism is provided. 'A spring 28 by means of a rod 29 pulls double lever30 downwards, the double lever being loosely mounted on the shaft so that its free arm 31 brings the arm 23 with its pawl 24 constantly into cooperation'with the ratchet wheel '25, when a feeler member 16 is not actuated by the griff hooks. If on the contrary, as previously described, a grifi' hook is actuated and thus one of the levers 9 is moved into the position shown. in Fig. 1, it carries with it a rod 32-whieh extends across the several levers 9. The rod 32 is carried by arms 33 which swing about the shaft 8 and one of the arms 33 moves a lever 34 which moves the rod 29, together with the double lever 30, 31, into its inoperative position as shownin Fin. 1 against the action of the spring 28.

By exerting a pull on any one of the levers 9, the double lever 30, 31 will therefore be brought every time into its inoper ative position by the aid of the rod 32. By means in themselves known for instance as set forth on patent to C. Novet No. 785,679, dated March 21, 1905-, the griife block is prevented from carrying out its stroke until the ratchet wheel is fed forward.

For this purpose, forexample, a swinging lever 37 is provided on the frame in such manner that it is drawn by a spring 38 into aposition against a stop 37' in which position it is beneath an extension 39 of an arm 40 which moves the grifl' block up and down and thus prevents its movement. If the saving motion is out of operation, the card shaft 41 is fed forward through one tooth of the ratchet wheel 25 while the shaft 42 continues to rotate. Together with the card shaft rotates a lantern wheel 43 which successively moves the nose of a lever 44' sideways.

The lever 44 is articulated t0 the swinging lever 37. It thus moves the swinging lever at every forward feed into a position; in which it no a longer prevents the downward movement of the arm 40 and it is then lifted up by a non-circular disc 45 on the shaft 42, so that it is free. from the lantern Wheel43 with which it was in engagement and is returned with the swinging lever by the spring 38. The swinging lever then moves again under the arms 40 which in the interval have completed the grifi' block movement and have reached their upper position. If now the saving motion becomes operative, the feeding of the card shaft ceases and the lever 44 is not drawn sideways but is only raised and lowered without efiect by the non-circular disc 45 at each rotation of the shaft 42. Consequently the swinging lever 37 also remains in the position illustrated arresting the movement of the arms 40.

As an example of the manner in which the mechanism operates, it may be assumed that it is. to be used in conjunction with a loom for chenille cloth and is to control the change of the weft. The jacquard card must have a"hole for each of the different coloured threads to-be picked and for each of the timing discs 1*10.

The card holes are engaged by the needles which operate the relative hooks. When the griif block 35 descends, the hooks engage the griff knives and are raised with the griff when the latter rises. At the same time, for example, by means of the saving hook 2, the bell crank lever 3 and the pull rod 4 pull the levers 7 and 9 and release one of the feeler members 16 which by means of the spring 17 is pressed against the timing disc. 19 having ten ratchet teeth. Nineof the ratchet teeth of this disc have only shallow notches whilst the tenth is a deep notch. The feeler member 16 now feeds at the same rate as the picking operation first the nine teeth with the shallow notches and then finally the tooth with the deep notch. Thereupon the feeler member 16 presses against the rod 21 and the lever 23 connected therewith, together with its arm 24 against the feed wheel 25, which is thus fed forward one tooth by the lifting of the arm 23, thus the card cylinder 1 and the card is again fed forward one step and'at the same time the swinging lever 37 which prevents movement of the extension 39 of the arm 40 is withdrawn by one of the pins of the lantern wheel 43 and the lever $4. In this manner the lever 40 and the grid block 35 are caused to descend and on rising can lift with them the grid hooks in the meantime set by the jacquard machine for the new colour and saving motion. The non-circular disc 45 on the shaft 42 presses the lever 44 out of the reach of the lantern wheel 43 and the spring 38 pulls the swinging lever 37 under the extension 39 of the lever 40 which in the interval has again been raised, and the whole operation repeats with another feeler member which now enters into operation.

I claim:

1. A jacquard card saving motion comprising a set of grifl" hooks or saving hooks, a timing device associated with each of said hooks, and mechanism whereby the feed of the card cylinder is interrupted until said timing device permits the further feed of the card cylinder after a definite number of picks determined by said timing device.

2. A jacquard card saving motion provided with a series of pawls actuated in synchronization with the machine picks, a se ries of timing discs having ratchet teeth for cooperating with said pawls, each of said discs having one or more deep notches, a card feeding ratchet wheel, a driving member cooperating with said ratchet wheel, a series of grifi. hooks, and mechanism interconnecting said grifi' hooks and pawls whereby the lifting of a grifl? hook causes its associated pawl to rotate its timin disc step by step until the notch in said $sc is brought into operative position, whereupon the feed wheel is fed forward one step by the driving member.

3. In a jacquard motion including a series of pawls and a series of grifi' hooks, the combination of a movable rod extending across the several pawls, means for moving said rod so as to normally hold said pawls in their inoperative positions, said rod bein moved by the lifting of one of the gri hooks to allow the pawl associated with said grifi hook to assume its operative position, and mechanism for normally holding a driving member in engagement with the feed wheel and for withdrawing said driving member when one of the grilf hooks is lifted.

4. A jacquard card saving motion comprising a series of grifi' hooks, a corresponding series of pawls, a series of spring-controlled connections between the grifl hooks and their associated pawls, mechanism for constantly reciprocating said pawls, a series of ratchet timing discs one for each pawl, each of said discs having a deep notch therein, means for normally holding said pawls out of operation with their ratchet discs, means for causing each of said pawls to engage its J OHANNES MENSOHNER.