US1072944A - Ribbon-loom. - Google Patents

Description

J-. HKUSERMANN. RIBBON LOOM. APPLIGATION FILED FBB.20, 1912.

1 72,944, Patented Sept. 9, 1913.

2 SHEETSSHEET 1.

% il /0107a] J. HIA'USERMANN.

RIBBON 1.00M.- APPLICATION FILED 313.20 1912.

Patented Sept. 9, 1913.

Z SHEETS'SHEET 2.

' J 506 flzzuerwzayzw I as lazeJJeJi- JITED STATES. PATENT orrucn JAKOB irl'iosnniviniv v, or STETTEN, ivnnn. tiimaon, GERMANY, ASSIGNOB TO THE FIRM or GEBR. srAUBLE, or HORGEN, cAiv'ron or ZURICH, swirznnnann.

RIBBON-L001.

To all wit-omit may concern:

Be it known that I, JAKOB HAUSERMANN,

a citizen of the SwissR-epublic, and resident of Stetten, near Liirrach, in the Grand Duchy of Baden, Germany, have" inyented new and useful Improvements in Ribbonfull,

apparatus according to a fundamental shed ding motion by means of the ordinary crosswise arranged shedding. cams, this cam gear being hitherto placed in the lower part of the loom frame-work and being set into operation when, they mode of operating the heddles' is to be changed from the dobby cont-rolled shedding tothe said cam conadvantages.

trolled shedding. In ishedding cam gears of this kind, there are, however, several dis- Firstly these gears are, from a constructional point of view, extremely complicated; then again when the shed is to remain open during two, three, or more successive picks, it is necessary to correspondingly alter the driving connection between the shedding cam'gear andthe loom shaft as well as the arrangement of. the eccentric disks or cams, whichrequiresthe expenditure of considerable time, labor'and material.

Now the present cam. shedding apparatus for ribbon looms, which as usual allows of the ordinary fundamental shedding motion (instead of the dobby controlled shedding motion) but this is distinguished from the ordinary cam gears of this kind in that its operation is automatically controlled by a pattern card having perforations according to the fundamental shedding so that it may "be automatically brought into and'out of gear according to the pat-tern of said card. The whole construction of suchan arrangement is extremely simple. Owing to the control of the cam shedding apparatus by means of a pattern card a simple means is at hand whereby according to the pattern of the card, when thecam shedding apparatus is in gear, this latter may at anytime be temporarily put out of gear to allow the shed to remain open for any desired num-- ber of picks.

The accompanying drawings illustrate Specification of Letters Patent.

invention relates to a Patented Sept. 9,1913.

, Application filed February 20, 1912 Serial No. 678,962.

one constructional example of the subject of the present invention, which is here combined with a ribbon loom dobby apparatus and this combination allows of an especial simplicity of construction in that it allows of the use of the dobby treadles for the cam shedding operation and in that the card of the dobby may at the same time constitute the pattern card for the control of the cam shedding apparatus; however, the cam sheddlng apparatus could also be arranged independently of the dobby.

Figure 1 is a side view of the said dobby with its members in a first position. Fig. 2 is a longitudinal section through the dobby in the position of the members shown in Fig. 1. Fig. 3 is asecond longitudinal section showing a different positioning of .the parts. 4 is a side view of the dobby similar to that shown in Fig. 1, but

showing a different position of the parts.

Fig. 5 shows a detailview of a ratchet and pawl mechanism.

1 is the frame of the dobby in which an oscillating shaft 3 provided with a driving arm 2 (Fig. 1) is mounted. The oscillating shaft- 3 carries further two beam-levers 4t which are connected by links 5 with the two lifting blades 6 and 7. Connecting rods 8 are pivoted to the beam-levers 4 and im: part the to and fro movement of the beamlevers to pendulum levers 10 pivoted at 9. These levers 1O carry pins 11 which engage incam slots 12 oftwo levers 14 pivoted at 13. The free ends of the levers Mare connected with the carrying rods .17 of the pattern card cylinder 15 moving up and down of the corresponding hooks l9 advanced through the lower blade 6 and to allow these hooks 19 which have just been reached by the upper blade 7, to follow the then retreating upper blade 7 to which they have attached themselves, while all the other hooks 19 drawn forward by the knife 6 are locked by the corresponding levers 100 which have not been disengaged. The hooks 19 are connected to the usual treadles 21. All but one of these treadles have the heddles hung upon them, their return movement, owing to the pull of the heddles being llmited by means of a stopping bar 44.

Above the lifting hooks 19 the particular cam shedding device is mounted in the frame 1 of the clobby (Fig. 2). This consists of a plurality of crosswise arranged cams 34 mounted by pairs on a shaft 31, whichare slightly displaced relatively one to another and united in a solid whole by means of bolts. The cams 34 are designed to cooperate with roller carrying arms 38 which are connected to the treadles 21 necessary for the fundamental shedding motion. The shaft 31 is hollow and slides upon a revoluble shaft 42 by means of a groove and. key. The shaft 42 carries a ratchet wheel 30 by which means at each stroke it is turned a quarter of a revolution, for which purpose a pawl 28 pivoted to a bell crank lever 32 cooperates with the ratchet wheel 30 in such a manner that at each to and fro movement it moves the ratchet wheel one step forward. The bell crank lever 32 is driven by a rod 33 actuated by an eccentric (not shown) on the main shaft of the loom.

The free treadle 21, that is to say, that one on which no heddle is hooked, but which however is suitably weighted, has a pushing pawl 22 pivoted to it which normally operates upon a ratchet wheel 23 revolubly mounted within the frame 1. An unforeseen turning of the ratchet wheel 23 is prevented by means of a spring controlled locking pawl 24. The ratchet wheel 23 is mounted upon a revoluble shaft 25 mounted in the frame-work 1, which shaft passes outside the framework and carries there a lifting cam 26 which supports a vertically guided controlling rod 27. The upper end of this controlling rod 27 is so arranged relatively to the ratchet wheel 30 that it acts as a guide for the pawl 28 when the control rod 27 is lifted, in such a mannerthat the pawl 28 at the next following return stroke cannot engage with the ratchet wheel 30 to move it forward, whereby the shedding cams 34 will remain fixed in the position they have taken up. If, on the other hand, the controlling rod 27 falls, then it re leases the pawl 28'and this can then move the wheel 30 and the shedding cams 34.

The operation of the controlling rod 27 depends on the position of the lifting cam 26 and the position of this latter depends upon the movement of the corresponding treadle 21 imparted to it by means of the pawl and ratchet mechanism 22, 23. The position of the treadle 21 is controlled from the pattern card by means of the corresponding lifting hook 19, the correspond? placed suflicientlyto one side owing toythe shaft 31 sliding along the shaft 42 so that they are withdrawn from the range of the treadle arms 38. The card controls by means of the needles 18, thelevers 100 and the lifting hooks 19, the movement of the heddles under the control of thefllifting blades 6 and 7. As the operation .ofthese hooks and blades does notafi'ect the present invention it is not necessary to describe these in further detail. .Should'now, for

a particular work, the-shedding beoperated by means of the cams 34 (instead of the dobby), then the cams 34 are pushed into their operative position 'rel'ativeto the treadle arms 38, while'the card is replaced by another so perforated thatthose hooks whose treadles 21 are now madedepen'dent upon the cam .shedding'gear, 'no longer work as regards the treadle movement, but

on the other hand that hook 19 which con- 7 trols the engaging and disengaging of the cam shedding-gear and which is connected to the above mentioned heddleless counter-v weighted treadle 21, is operated'by the card according to the wished for fundamental shedding operation. This latter hook will be called cam shedding hook in the following to differentiateit from the others.

Consider that the machine lies ready for operation by means of the cam shedding gear (Fig. 1). i The lever 32 moving to and fro moves each time the shedding cams 34 forward by means of the pawl 28and the wheel 30 so that the change of shed takes place according to the well known cam shedding operation. If, now, during this mode of operationfthe card disengages the lever corresponding to the cam shedding hook from this latter, then this cam shedding hook (in a similar manner to theremaining hooks in the case of dobby control) which as above has been. reached by the upper blade 7, goes back with this latter 'and then the treadle 21 connected to it moves the pushing pawl 22 backward in order to bring it into operatlve position relatively to the wheel 23.

During the next followingforward movement of the blade 6, the cam shedding hookis again brought forward which causes the pawl 22 to be engaged with the wheel 23 in the manner shown in Fig. 3 and thereby the lifting cam 26 will be turned 90 from the position shown in Fig.1 to that shown in Fig. 4.. Bythis means the controlling rod 27 is lifted to such an extent that it forms 'ai'guide for the continuously reciprothe position into which it had last been brought so that one, two, or more picks could take place, and this condition of affairs remains unaltered until the card causes a new disengagement of the cam shedding hook, which hook has meanwhile hooked itself upon the corresponding locking lever 100, whereby in a similar manner as above stated a fresh movement of the wheel 23 takes place which causes the lifting cam 26 to again be turned into the position shown inFig. 1 in order to allow the controlling rod 27 to be lowered and to allow the pawl 28 to again come into engagement with the ratchet wheel 30 and operate the step by step forward movement of the shedding cams 34. It may be seen from the above that the bringing into and out of operation of the shedding cam gear is controlled automatically from the card by means of the above mentioned free hook or cam shedding hook.

The different positions of the shedding cams 34, when being in operation, are secured by a locking spring 37 engaging with a locking wheel 36 on the shaft d2.

IVhat I claim is:

1. In dobby apparatus for ribbon looms, the combination with heddle operating members of a normally inoperative shedding cam gear capable of being brought into an operative condition with regard to said heddle operating members for the operation thereof, a driving mechanism for said shedding cam gear and an automatic, card controlled engaging and disengaging device for said driving mechanism, substantially as described.

2. In dobby apparatus for ribbon looms, the combination with heddle operating members of a'normally inoperative shedding cam gear capable of being brought into an operative condition with regard to said heddle operating members for the operation thereof, a pawl and ratchet mechanism for driving said shedding cam gear and an automatic, card controlled engaging and disengaging device for said driving mechanism, substantially as described.

3. In dobby apparatus for ribbon looms,

the combination with heddle operating members of a normally inoperative shedding cam gear capable of being brought into an operative condition with regard to said heddle operating members for the operation thereof, a pawl and ratchet mechanism for driving said shedding cam gear, a controlling member for the pawl of said mechanism to disengage it when being lifted and to allow of its engagement with the ratchet when being lowered, a rotary cam for lifting and lowering said controlling member, and card controlled means for causing intermittent rotation of said rotary cam under the control of said card, substantially as described.

4. In dobby apparatus for ribbon looms, the combination with heddle operating treadles of hooks connected thereto, recipro- I eating blades for operating said hooks, card controlled selecting means for selecting the hooks to be operated, a shedding cam gear normally in inoperative condition, but capable of being brought into an operative condition with regard to said treadles when they are to be operated without hook control, a pawl and ratchet mechanism for driving said shedding cam gear, a controlling member for the pawl of said mechanism to disengage it when being lifted and to allow of its engagement with the ratchet when being lowered, a rotary cam for lifting and lowering said controlling member, and card controlled means for causing intermittent rotation of said rotary cam under the control of said card, substantially as described.

5. In ribbon looms, a dobby having heddle operating levers, an auxiliary rotary shaft mounted in the frame of said dobby, a shedding cam gear slidably mounted on said shaft, being normally in inoperative position, but capable of being shifted into operative position with regard to said heddle operating levers, a drive mechanism for driving said shedding cam gear shaft independently of the dobby control, and an automatic card controlled device for temporarily engaging and disengaging said drive mechanism, substantially as descrlbed.

In witness whereof I have hereunto signed my name this 2d day of February 1912, in the presence of two subscribing witnesses.

JAKOB HAUsERMANN.

\Vitnesses GEORGE GIFFORD, AMAND BBAUN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

I Washington, D. C.

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