US1722972A - Drive for pattern mechanism for looms - Google Patents

Description

July 30, 1929. '0. v. PAYNE DRIVE FOR PA TTERN MECHANISM FOR LOOMS Filed Aug. 1, 1928 2 Sheets-Sheet I/E/V TOP.-

OF/VE July 30, 1929. o. v. PAYNE 1,722,972

DRIVE FOR PATTERN MECHANISM FOR LOOMS Filed Aug. 11 1928 2 Sheets-Sheet 2 I g 566A)? I L the oickin motion secured to to r CD Patented July 30, 1929.

urnrso STATES PATENT OFFICE.

OSCAR V. PAYNE, OF WORCESTER. MASSACHUSETTS, ASSIGNOR TO CROMPTON & KNOWLES LOOM WORKS, OF V/"OECESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

DRIVE F'JR PATTERN MECHANISM' FOR. LOOIvZS.

Application filed Aug-ust 1, 1928.

This invention relates to improvements in driving mechanism tor looms and it is the general (JlJjGCl; oi the invention to drive the loom in such a way'that the picking motions will not. interfere with the smooth operation of the harness controlli' mechanism;

the soalled Knowles loom, an example of which is seen in patent to Knowles No. 1' 992, it is customary to have a so-called Dread provided with an upright shaft the upper end of which drives a pair of cylinders rotating in opposite directions and acting to se or lower the harnesses through cooperaion with vibrator gears and connectors.

lower end or" the upright shaft is ordilv coi :iccted to the bottom shaft of the were bv gearing which preferably gives the dwe .l as the lay is moving backwardy so t at he scuttle may have ample time lay. The bottom shaftcarries pickiig arms which ar located one on each side oi the loom and the drivunit for the loom located at that side i the loom opposite the upright shaft or motion. The picking motion on that i e of the. loom near the head occasionally auses the bottom shaft to t ist during the one tl at the picking ball is movirg'up the .vicl ing cam. soon as the picking ball assed ov' the top of the cam, however, iin which the shat vas previously and the shaft inunedi-' cted is released all of he driving and driven parts connected thereto with the result. that breakage occurs in he or another of these parts.

It is an important object of my present invention to provide an auxiliary shaft driving the head motion, said shaft being independent l the bottom shaft and also the top or or shat'tof th loom, but dey m-c on from gear 11;; a part of whch is secured to the bot-tom shaft at a a preferably though not ecssarily bel an the source of power and that art of he bottom raft and adjacent the source of power. In is way the drive for the auxiliary shaft is not suhjecten to any twist incident upon the Serial No. 296,704.

operation of the picking motion on the head end of the loom. The head operates in a smooth manner with the result that the aforementioned parts are not subjected to brca rage.

I find that the position of the upright shaft and also the position of other parts of the loom can 0t very conveniently be changed with respect to the bottom shaft who; the auxiliary shaft is properly positioned to cooperate with the upright shaft it happens that the axis of said auxiliary shaft lies within the path of movement of the picking ball, so that said auxiliary shaft, it the same were straight throughout its length, would be struck by the picking arm. it is a further object of my present inventi to cities the shaft at points in alignment v the picking arm on the bottom shaft dispose the oliset in such a direction *ely to the picking arm as will permit the latter to operate without mterterence l tl e auxiliary shaft.

L is latter feature of my invention is equally effective whether the loom be an given a complete revolution every pick of on loom. For this reason the oll'set will always be turned away from the picking arm when the latter is moved toward the auxi iary shaft.

It is customary to provide the dwell pre viously mentioned for the shuttle by introducing elliptical gears between the bottom shaft and the upright shaft and in carrying my present invention into eliect- I provide elliptical gears be ween the bottom shaft and the auxiliary shatt, said gears as shown .icrein being in the ratio of Qto 1. It is desirable under certain conditions to be able to change the timing of the head and this is ordinarily accomplished by changing the setting of the elliptical or eccentric on the bottom shaft. In the arrangement set forth herein 1 make provision for this adjustment in such a way as will not interfere with the clearances necessarily existing between the picking arms and the auxiliary shaft.

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims;

In the accompanying drawings wherein l have shown the invention as applied to a Knowles loom,

Fig. 1 is a rear devotion of a loom having my invention applied thereto,

. Fig. 2 is a horizontal section taken on line 2-2 of F' 1, certain parts being removed for the sake of clearness,

Fig. 3 is an enlarged vertical section on line 33 of Fig. .2,

Fig. l is an enlarged vertical section on line 4l-4; of Fig. 2,

Fig. 5 is an enlarged section on line 5-5 of Fig. 2 showing the means for adjusting the elliptical gear on the bottom shaft,

Figs. 6 to S are diagrammatic views showing the positions of the picking arm and offset in the auxiliary shaft in the several positions they may assume for an ordinary loom wherein the bottom shaft makes one revolution for every two picks of the loom, and

Figs. 9 to 11 are a similar series of views illustrating the parts in a pick and pick loom wherein the picking mechanism at each end of the loom is actuated every pick of the loom, the bottom shaft in this instance also making a complete revolution every second pick of the loom.

Referring particularly to Figs. 1 and 2 I have shown a loom frame 10 having arches 11 to support a head H which may be substantially the same as: that shown in the previously mentioned patent to Knowles No. Said head motion includes in its construction pair of upper and lower bevel gears 12 and 13, respectively, which mesh with similar gears 14: and 15, respectively, secured to an upright shaft 16. Vibrator levers 17 pivoted around a heel pin 18 are determined as to their vertical position by a pattern chain 19 which preferably receives an angular motion each pickof the loom. By means of vibrator gears 20 the connectors 21 are moved either to the right or left as viewed in Fig. 1, depending upon the vertical position of the corresponding vibrator levers. Each connector is attached to a harness lever 22 and the latter in turn is connected by an appropriate linkage to harness frame 23.

The bottom of shaft 16 extends into a bearing 24 secured to the side of the loom and said shaft has secured thereto a collar 25 through which extends a driving pin 26,

bevel gear 28 which meshes vwitl anot carried by a cap 27 slidable in a vertical direction along the shaft 16. Said pin 26 is designed to enter recess in the driving her gear 529 secured to a short shaft 30. Shaft 30 extends through the bearing member 24 and projects toward the center of ti e loom. Under normal operation each rotation of the shaft 30 will be accompanied by a rotation of shaft 16 through the bevel gears already described.

Power for driving the loom may be derived from a motor M located at the opposite sides of the loom. I do not wish to be limited to any particular form of drive for the loom and have shown the motor herein as a so-called start ano stop motor having a pinion to mesh directly with large gear l1 on bottom shaft 4-2. The bottom shaft is supported by proper bearings and is given a complete revolution every other pick of the loom. Two separate and independent picking arms are secured to shaft 42, one of which l?) is adjacent the driving unit while the other arm id is adjacent the head motion end of the loom. Said picking arms extend in opposite directions so that but one of them is in down or operative position a time, the arm d3 cooperating with the picking cam d5 which is connected operatively to a picker stick 46,

while the arm as cooperates with a picking cam l7 and by appro riate mechanism is operatively connected to the picker stick 48 located at tl e head end of the loom.

he the bottom shaft rotates during normal operation of the loom the picker stick d6 will be given a shuttle propelling motion on'alternate picks ofthe loom while the picker stick 48 will be given a shuttle propelling motion on the interver' 9; picks. )n a loom of the type shown herein where there may he drop boxes at one end only of the loom it is desirable that the picker sticks act in alternation as descrloed. The lay L is driven by a crank shaft 50 derivin motion from the large gear 41 by means or a smaller gear 51 half as large as said driving gear.

The parts already described are of common construction and of themselves form no part of my present invention, The picking is effected as described and the shaft 16 is given a rotation every pick of the loom while the crank shaft 50 extends substantially parallel to them above the bottom shaft and by means of the described gearing acts to move the lay L back and fort by means of connectors 52 once for every pick of the loom.

In carrying my invention into effect I provide improved means for commu'nic ting driving power from the source of poi to the upright shaft 16. Accordingly, in

carrying my invention into effect, I provide an auxiliary shaft 60 which rotates in bearings 61 and 62 located, respectively, adjacent the driving and head ends of the loom. The large elliptical gear 63 is secured to the bottom shaft 42 preferably as close to the driving gear 41 as possible, although I do not wish to be limited to the particular position for the elliptical gear 63 as set forth as it will be sufficient for the purposes of my present invention if said crank is secured to the bottom shaft adjacent that end of the loom where the driving unit is located.

Said elliptical gear meshes with co-rre iii-c spending pinion 64 half as large elliptical gear, the purpose of this specified ratio being to give the auxiliary shaft 60 a rotation every pick of the loom, it being remembered that the bottom shaft 42 rotates every other pick of the loom. Should the bottom shaft rotate every pick of the loom the gears 63 and. 64 will be of equal size.

The right hand end of the auxiliary shaft 60 as shown in Figs. 1 and 2 is extended to the right of the bearing 62 and into a coupling member C shown in detail in F ig. 3. A key K extends into a slot formed in a short shaft 30 and also into another slot formed in the right hand end of the auxiliary shaft 60 and the coupling is made iir two parts 65 and 66 which are held together by bolts 67. By means of this coupling motion from the shaft 60 is communicated to the upright shaft 16.

In the operation of my invention as thus far described motion is communicated to the au:-:ilii1ry sin. ft at point between the source of power and the picking arm 44 and as shown herein at a point between the source of power and also picking arm 43, although I do not wish to be limited to this latter arrangement. As the loom operates, therefore, any twist in the bottom shaft 42 which may result from the action of the picking at the head end of the loom will have no effect whatever on the character of motion communicated to the head H, because of the fact that the part of the bottom shaft which is subjected to the twisting does not transmit power from the driving unit to the auxiliary shaft.

As previously stated, I find the upright shaft is so located t rat in order to drive the same conveniently by means of an auxiliary shaft such as shown herein it is necessary to have the axis of said auxiliary shaft so located as to lie within the path of movement of the picking arms 43 and 44. In order that there may be nointerference on the part of the pickin arms and the auxiliary shaft I provide the latter with a plurality of offsets 70 and 71 which correspond, respectively, with the picking arms 43 and 44. Said ofisets are preferably on the same side of the axis of the shaft 60 and are of sufficient extent to permit the picking arms to move in their normal paths of motion without interference.

In Figs. 6 to 8 I have shown diagrammatically the relation between the picking arms and the offset located at the driving end of the loom. The parts are so related that they will assume the position shown in Fig. 6 when the picking arm 43, is extended toward the axis of the shaft 60, the offset 70 being turned away from the arm 48.

As the arm and auxiliary shaft turn in the directions indicated by the arrows in Fig. 7 the offset 70 will move downwardly and to the right toward the bottom shaft 42. As shown in Fig. 8 the offset will be in its nearest position wit respect to the bottom shaft 42 while the picking arm will be in a vertical position. As the picking arm continues to rotate for another 90 of revolution of the bottom shaft or for another half pick of the loom it will assume the position diametrically opposite from that shown in Fig. 6 and the onset 70 will have moved around through 180 so that said offset willassume the position shown in Fig. 6 when the picking arm 43 turned away from the offset.

As the bottom shaft continues to rotate the offset-will be given another complete revolu tion and will approach the position shown in Fig. 6 as the picking arm 43 moves upwardly toward the auxiliary shaft. In this way the picking arm 43 is permitted to move without interruption and the offset 70 will always be turned away from the picking arm when the latter is moving in the vicinity of the auxiliary shaft.

In the diagrammatic Figs. 9 to 11 I have indicated the relation of the parts in a loom wherein each picker stick is given a shuttle prop lling movement each pick of the loom, as on a so-called pick and pick loom. It will be seen that the picking arms and 81 extend in opposite directions with respect to a bottom shaft 82, but the rates of speed of the bottom shaft 82 and the auxiliary shaft 60 will be substantially the same as in the previously described instance, so that for each half revolution of the shaft 82 the auxiliary shaft will make a complete revolution, the effect of this bein to have the crank 70 turned away from the picking arms 80 and 81 when either of the latter is in the vicinity of the auxiliaryshaft 60.

On other styles of pick and pick looms of the so-called equal geared type wherein the gears 41 and 51 are replaced by gears having equal iumbers of teeth, the bottom shaft will be given a complete revolution every pick of the loom, but as this is the same rate of speed at which the auxiliary shaft turns, offset 70 will always be in a position to clear the picking shoe.

As shown in Fig. 5 the shaft 60 is pro- Iided with two keyways and 91, respectively, one of which receives a key 92 which 'enters a slot 93 in the hub of pinion Get. It

will be understood by reference to the diagrammatic Figs. that the picking arm 43 will clear the offset when the arm is in any one of a plurality of adjusted positions with respect to the bottom shaft within a limited range of adjustment, as it is not necessary for the line joining the centerof the offset and passing through the axis of the shaft (50 to pass in every instance centrally through the picking a3 and a l. As shown in Fig. 6, for instance, the arm 43 could be in a somewhat lower position than that shown and still be able to clear the offset 70 when turning in the direction of the arrow. For larger adjustments, however, it may be desirable to shift the pinion. 64 relatively to the auxiliary shaft 60 and place the key 92 in the slot 91. A corresponding adjustment would of course be made on the elliptical gear 63, but as such adjustments between the bottom shaft and the short shaft are well understood they are not illustrated herein.

From the foregoing it will be seen that I have provided a simple mcans'for reventing the twisting of the bottom shaft from interfering with the proper operation of the head motion by using an auxiliary shaft which derives its driving power from the bottom shaft a point very close to the motor M and in such a position as not to be affected by any twisting which may occur in shaft 42. It will also be seen that although the upright shaft is placed too close to a vertical plane passing through a bottom shaft to prevent the use of straight auxiliary shaft, yet clearance is provided with the picking arms by offsets in the auxiliary shaft, the timing being such that the offset will always be turned away from the picking arm when the latter is in proximity to the auxiliary shaft, so that the arm may pass through the space defined by the offset. Furthermore, it will be seen that a relatively large range of adjustment between the gears 63 and is permitted so that tie relative timing of the head with respect to the bottom shaft may be adjusted without disturbing the relation between the picking arms and their respective offsets. Furthermore, it will be seen that whether the loom of the usual type wherein the bottom shaft rotates once for every second pick of the loom or whether the bottom shaft operates in an equal geared loom to rotate once every pick the relation of the offsets and the pickinc; arms will still be preserved.

, Having thus described my invention it will be seen that changes and modifications may be made thereinby those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but

what, I claim is:

1. In a loom having a picking mechanism at each end thereof, a harness controlling mechanism for one end thereof, a source of power located at the other end of the loom, and a shaft operatively connected to the source of power and extending across the loom to operate the picking mechanisms, in combination, an auxiliary shaft substantially parallel to the first named shaft and having driving operative connection with the harness controlling mechanism only, and driving connections between the two shafts including a part carried by the first named shaft located on that side only of the loom adjacent the source of power.

2. In a loom having a picking mechanism at each end thereof, a harness controlling mechanism for one end thereof, a source of power located at the other end of the loom, and a shaft operatively connected to the source of power and extending across the loom to operate the picking device, in combination, an auxiliary shaft having operative connection with the harness cont-rolling device only and having driving connection with the first named shaft at a point along said named shaft adjacent the source of power, said auxiliary shaft being independent of the first named shaft at all other points.

3. In a loom having a picking mechanism at each end thereof, a harness controlling mechanism for one end thereof, a source of power located at the other end of the loom, and a shaft operatively connected to the source of power and extending across the loon to operate the picking device, in combination, anauxiliary shaft having operative driving connection with the harness mechanism only, meshing gears one of which is located on each shaft, said gears being adjacent the source of power and communicating power from the first named shaft to the auxiliary shaft, said shafts extending; across tl e loom from the meshing gears and 'ndependently of each other.

l. in a loom having crank and bottom shafts geared together and extending across the loom, harness controlling mechanism for one end thereof, and a source of power located. at the other end of the loom, ashaft operatively connected to the source of power and extending across the loom to operate the picking device, in combination, a third shaft operatively-connected to one of the other shafts ata point adjacent the source of powerand extending across the loom independently of the other shafts and operatively connected to the harness controlling mechanism. I

5. In a loom having a picking mechanis L. at each end thereof, a harness controlling mechanism for one end thereof, a source of power located at the other end ofthe loom, a shaft operatively connected to the source of power and extending across the loom to operate the picking device, and an upright shaft to drive said harness controlling mechanism, in combination, a driving shaft for the harness mechanism only extending across the loom parallel to the first named shaft and operatively connected to the lower end of the upright shaft and having driving connections with the first named shaft at that part of said first named shaft only which is adjacent the source of power.

6. In a loom having a picking device at each end thereof, a harness controlling mechanism for one end thereof, a source of power located at the other end of the loom, a shaft operatively connected to the source of power and extending across the loom to operate the picking devices, an upright shaft to drive said harness controlling mechanism, and a comparatively short shaft extending parallel to the first named shaft and operatively connected to the upright shaft, in combination, an auxiliary shaft forming an extension of the short shaft extending across the loom and having driving connection with the first named shaft at one part only of the la fer adjacent the source of power.

'7. In loom having a shuttle propellingdevice at each end thereof, a shaft extending I cross the loom, a pair of picking arms secured to said shaft, one adjacent eacn end of the loom, a harness contr Lling mechaism located at one side of the loom, a source of power located at the opposite side of the loom, and an auxiliary shaft extending parallel to the first named shaft and d riving power from the first named shaft at a point adjacent the source of power, said auxiliary shaft having an offset defining a space through which one of the picking arms may move.

8. In a loom llZtVino a shuttle propelling dev'ce at each end th ereof, shaft extending across the loom, a pair of picking arms secured to said shaft, one adjacent each end of the loom, a harness controlling mecha nism located at one side of the loom, source of power located at the opposite side of the loom, and an auxiliary shaft extending parallel to the first named shaft and deriving power from the first named shaft at a point adjacent the source of power, said auxiliary shaft having an offset defining a space through which one of the picking arms may move, the driving connections between the shafts including two meshing gears one of which is twice the size of the other.

9. In a loom having a shuttle propelling device at each end thereof, a shaft extending across the loom, a pair of picking arms secured to said shaft, one adjacent each end of the loom, a harness controlling mechanism located at one side of the loom, a

source of power located at the opposite side of the loom, said shaft having a complete revolution every second pick of the loom, an auxiliary shaft operatively connected to the harness controlling mechanism, a relatively small gear on the auxiliary shaft, a second gear meshing therewith and of twice the number of teeth secured to the first named shaft, and an offset formed in the auxiliary shaft defining a space through which one of the picking arms may pass.

10. In a loom, a driven shaft having a picking arm thereon moving through a given path of action, a harness controlling mechanism, a shaft operatively connected to said mechanism and having the axis thereof located within the path of action of the picking arm, and an offset formed in the auxiliary shaft definding a space through which the picking arm passes when adjacent the auxiliary shaft.

11. In a. loom having a source of power and a harness controlling mechanism, a pair of shafts operatively connected together one of which is connected to the harness controlling mechanism and the other of which is connected to the source of power, a picking are located on one of the shafts, and an offset in the other shaft defining a space through which the picking arm may pass.

12. In a loom having a source of power and a harness controlling mechanism, a pair of shaft-s operatively connected together one of which is connected to the harness controlling mechanism and the other of which is connected to the source of power, a picking arm located on one of the shafts, and an OK- set in the other shaft defining a space through which the picking arm may pass, said gears being driven in timed relation so that the offset will always be extended away from the picking arm when the latter is ad jacent the shaft in which the offset is locat-ed.

13. In a loom having a source of power located at one side of the loom and a harness controlling mechanism on the other side of the loom, a revol ing picking arm, a shaft, means to communicate power from the source of power to the shaft at that side of the loom only adjacent the source of power, and an offset formed in the shaft defining a space through which the picking arm may pass.

14:. In a loom having a source of power located at one side of the loom and a harness controlling mechanism on the other side of the loom, a picking arm moving through a fixed path, a shaft, means to communicate power from the source of power to the shaft at that side of the loom only adjacent the source of power, and an offset formed in the shaft defining aspace through which the picking arm may pass.

15. In a loom having a driving unit at one end thereof and a harness controlling mechanism at the other end thereof, a driving gear operatively connected to the driving unit on that side of the loom adjacent the driving unit, a shaft extending across the loom and opel'etively connected to the harness controlling mechanism, agear secured to the shaft and meshing with the first rality of positions. 10

In testimony whereof I have hereunto at fixed my s1gnature.

OSCAR V. PAYNE.

Images