US1767906A - Loom operating device - Google Patents

Description

June Z4, 1930. K; WERNER LooM'oPERATING DEVICE Filed June 27. 1927 so I Patented .lune 24, 1930 UNITED-f-{STAT s Para4 KARL WERNER, OF lNURIlIVIBIiIRGr-IilIIBAGH,*'(rERyl-ISYY, ASSIGNOR TO PROGRESS VGrE- SELLSCHAFT FUER TEXTILMASGI'IINEN IMIITv BESCHRAENKTER HAFTUNG, OF

y' NUREMBERQ GERMANY, Ai CORPORATION F GERMAIT `LOOllI 'OPERATTG :DEVICE Applicatioyled .Tune 27, 1927, Serial No.

This inventionhasreference to means of increasing the efficiency and the output of mechanical looms bythe increase of the number of revolutionsy of the operating shaft without interfering with the proper opening of the shedgrequired for the passage of the shuttle. The increase of the number of revolutionsgof thev operating shaft in the caseof looms presentsy great diculties in View of thel fact that a certain time must be allowed for the passage of the shuttle through the open shed from one edge of the fabric tol the other, the time required varying with the width of the fabric'. Comparatively limited degrees of increase'of revolutions have been obtained according to the prior art by causing an eccentric chain wheel mountedon the mainor crankshaft of theloom tobe operated from a jack shaft orcounter shaft by means of a chain wheel, so that at each half revolution the angular velocity of the main shaft of the loom is somewhat increased or diminished. The adjustment of the loom in this case has been such that during the period of great angular velocitythe weft was beaten against they fabric, while on the other handin accordance with the period of small angular velocity during the passage of the 'shuttle' through the shed the movement of the laywas retarded. Now, inasmuch as the operation of the beating shaft is effected from lthe main shaft or crank shaft of the loom by a pair of gear wheels, the lack ofy uniformity of the rotating movement of the main shaft or crank shaft is likewise transmitted to the beating shaft by way of thisk pair of gearwheels, and, in view of the 'fact that 4as a result of the increased number of revolutions a heavier blow is made to.y act on the shuttle, this blow is still undesirably increased by the fact that it is always effected during the period of increased angular velocity, so that the force ofthe vblowbeeomes greater than ordinarily admissible, and has to be reduced; to the admissible limit by decreasing the eccentricity ofthe beating eccentric' cams.

There is the further drawback that by 201,901, and in Germani/Laren `:21, 1927. y

celerations and retardations ofthe beating gear and of the shuttle beating shaft causes considerable amounts of energy to' be uselessly wasted during the operation of the the constant undesired .accompanying acloom, so that the increased number of revolutions and the resulting increase of eiliciency of theloom are only'obtained by an unnecessarily large expense of energy. To this yshould be added the inconvenience that at the moment of the striking of the blow against the shuttlethere isalways one and the same pair of teeth of the beating gears m'engagement with' each other, so that these two teeth are rapidly worn out and are ver often wholly or partially broken off. This bythe means to be described a' number of important advantages are likewise produced. The invention will be more fully f'lescribed and its advantages pointed out by reference to the accompanying drawing showing byway'of exempliication an embodiment of the principles of the inventionas appliedl tov a mechanical loom in Figure l in side elevation and in Figure 2 in plan view.

In the drawing A is thel main shaft and B is the jack or auxiliary shaft for a train of gearing, and AC indicates a bearing or ljournaling housing for theshafts A, B appropriately secured to the'wall D of the loom. The idle vpulley E is mounted on the samevshaft with the driving pulley F which, by meansof. the collar G is retainedl in coupling engagement with the chain wheel Hsecured to the collar Gr. The chain wheel H is connectedto the chain wheel K by means of the chain J whereby the beating or striking shaft L is operated on vwhich is mountedthe chain .wheel K,

.While at the same time the chain wheel M mounted on the gear-wheel jack shaft B is likewise operated by means of the chain J the outside of which engages with the wheel M. Y The wheel M is coupled to the chain wheel N which drives by Vmeans of the chain P and the chain wheel O the crank shaft v Q. In view of the fact that the chain wheel K is operated by the chain J from the inside ofsaid chain, while the outside ofthe chain drives simultaneously the chain wheelY hf the shafts Q and L are rotated in different directions. The chain wheel N or the chain wheel O or both of these wheels may be eccentrically arranged and may be rigidly or adjustably disposed and with or e without coupling or clutching means.

By means of the intermediate gear jack shaft B and the' peculiar Varrangement of the driving chains 3in accordance with this invention the result is produced that the crank shaft Q, and the shuttle beating shaft L are rotated in opposite directions, as required in the case of looms, so that the beating-gear wheels are dis ensed with and may be replaced by chain wheels. As yappears from the drawing, the chain wheels H.A MQ K.` are surroundingly embraced hy thechain J in such a manner that the chain is always in engagement with quite a considerable number of teeth and the force required in each particular case, and especially the beating force required for the production of the blow of the shuttle is always distributed over a plurality yof teeth, and by this means undue wearing. out, as has been common withthe gear wheels heretofore employed, becomes entirely excluded.

In view of the fact that the lack of uniformity required forthe movement of the lay 'or batten is produced from the ljack shaft B ofthe intermediate gear wheels 'tain' the necessary ratio and by the eccentric chain wheels N and O, it is only the crank shaft Q which possesses the peculiar angular velocity increasing or diminishing at each revolution, and which is transmitted to themovement vof the lay as an acceleratingor respectively retarding means, while the beating shaft L which isV In order to arrive in a simple manner at an increase or a reduction of they number of revolutions of the loom, without the necessity Aof changing the belt drive of the loom, the rchain wheel H is exchangeably Vconnected to the clutch collar G, seas to admit of being replaced by chain wheels of a larger or smaller number of teeth. In View of the fact thatl according to this invention only the crank shaft Q performs an accelerated or retarded rotating movement, while the beating shaft L is rotated with uniform circular velocity, a loom according t0 this invention in spite of an increase in the number of revolutions requires considcrably less operating energy than in the case `of the accompanying additional acceleration and retardation of the beating gear wheels and of the shuttle beating shaft, which was unnecessarily effected inthe devices according to the previous art. In view of the re duction ofthe parts 0r masses with not uniformly accelerated and retarded movements, there is the'additional possibility of Aa considerable increase inthe number lof revolu tions and of the resulting efficiency of the' loom with a relatively very limitedv additional expense of energy. 'Y v In practice modificationsof the specific instruction shown by. way of illustration of the principles of the invention may be made withoutdeparting from the spirit and scope of the invention, as particularly set forth the appended claims.

I claim l.V In a loom operating tion,fa main driving shaft, a shuttle-beating shaft, and a jack-shaft'intermediate thereof, driving means for the main shaft, a chain connection between the main shaft and the beating shaft,engage abl`e with a member on the jack shaft, and adapted to drive the ack shaft in a direction opposite to that of the beating shaft, an operating crankshaft, and a chain connection between said crank shaft vand thel jack shaft and eccentric means for increasing and decreasing the velocity of the crank shaft the operative relation ofthe parts being suchthat the beater shaft operates the shuttle driving mechanism and the crank shaft operates the lay in timedrelation to the shuttle driving mechanism and at a variable speed to provide a slow movement of the lay while the lshuttle driving mechanism is operating. l Y 1 2. In a loom operating device in combination, a main driving shaft, a shuttle-beatin shaft, and a jack-shaft intermediate thereof,

a chain connection between the main shaft and the beating shaft, a chain wheel on the pick shaft in engagement with the outside of said chain-connection and rotatedther'ehy in a direction opposite to that of the beating shaft, an operating crank shaft, a chain wheel eccentrically mounted on said crank shaft and a iierrible connection on said chain wheel, and means on the jack shaft for movdevice in combina-V ing the flexible connection the operative re-V Y lation of the parts being such that the beater shaft operates the shuttle driving mecha iiism and the crank 'shaftoperates the l-ay in timed relation to the shuttle driving mechanism and at a variable speed to provide a slow movement of the lay while the shuttle driving mechanism is operating.

3. In a loom operating device in combination, a main driving shaft, a shuttle-beating shaft, and a jack shaft intermediate thereof, driving means for the main shaft, a flexible connection between the main shaft and the beating shaft and adapted to engage with the jack shaft, and rotating the same inversely relatively to the beating shaft, an operating crank shaft, a flexible connection thereof with the jack shaft and an eccentric on the crank shaft and on the jack shaft engaged f by said fi'exible connection, the operative relation of the parts being such that the beater shaft operates the shuttle driving mechanism and the crank shaft operates the lay in timed relation to the shuttle driving mechanism and at a variable speed toprovide a slow movement of the lay while the shuttle driving mechanism is operating. e. In a loom operating device in combination, a main driving shaft, a shuttlebeatin shaft, and a jack-shaft intermediate thereo chain wheels on said shafts, and a flexible connection between the chain Wheels of the main shaft and of the beating shaft, driving -xneans coupled to the main driving shaft,

the ieXible connection engaging with the chain wheel of the jack shaft, an operating crank shaft, a chain wheel eccentrically disposed on the crank shaft and a flexible connection between the chain wheel of the crank shaft and the chain wheel of the ack shaft and adapted to rotate the crank shaft inversely with relation to the rotation of the beating shaft, the operative relation of the parts being such that the beater shaft operates the shuttle driving mechanism and t-he crank shaft operates the lay in timed relation to the shuttle driving mechanism and at a variable speed to provide a slow movement of the lay while thev shuttle driving mechanism is operating. n

5. In a loom operating device in combination, a main driving shaft, a shuttlebeating shaft, and a jack shaft intermediate thereof,

f flexible driving means connecting the beating shaft and the main shaft, and engaging al its outside with the jack shaft and rotating thel jack shaft inversely with relation to the beating shaft, a crank shaft, a flexible connection betweenthe crank shaft and the jackshaft and eccentrically disposed wheels engaging the last mentioned liexible connection, and mounted on at least one of the two shafts in engagement with the last mentioned connection, the operative relation of the parts being such that the beater shaft operates the shuttle driving mechanism and the crank shaft operates the lay in timed relation to the shuttle driving mechanism and at a variable speed to provide a slow movement of the lay while the shuttle driving mechanism is operating.

6. In a loom operating device 1n combination, a main driving shaft, a shuttle-beating shaft, and a jack shaft intermediate thereof, driving means for the main shaft, a chain connection between the beating shaft and the main shaft, a chain wheel on the jack shaft, engaging theoutside of the chain connection and driven thereby contrariwise to the rotation of the beating shaft, an operating crank shaft, eccentrically disposed chain wheels respectively mounted on said shaft and the jack shaft, and chain connection between said chain wheels, the operative relation of the parts being such that the beater shaftoperates the shuttle driving mechanism and the crank shaft operates the lay in timed relation to the shuttle driving mechanism and at a variable speed to provide a slow movement of the lay while the shuttle driving mechanism is operating.

7. In a loom operating device in combination, a main driving shaft, a. shuttle-beating shaft, and a jack shaft intermediate .5'

thereof, driving means for the main shaft,a flexible driving connection between the shuttle beating shaft and the main shaft, driving chain wheels engaging said driving connection and respectively disposed on the jack shaft and on the beating shaft and possess'-l ing a peripheral ratio of 1:2, an operating crank shaft and a chain wheel eccentrically i disposed on said crank shaft and an additional ychain wheel on the jack shaft of equal size lwith the last mentioned chain wheel, and a flexible connection between the two equal last-mentioned chain wheels, the operative relation of the parts being such that the beater shaft 'operates the shuttle driving mechanism and the crank shaft operates the lay in timed relation to the shuttle driving mechanism and at a variable speed to provide a slow movement of the lay while the shuttle driving mechanism is operating. In testimony whereof I afliX my signature.

-. KARL WERNER.

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