US1081384A - Loom for weaving bags, &c. - Google Patents

Description

S, S. JACKSON.

LOOM FOR WEAVING BAGS, 6w.

APPLIGATION FILED FIBRE, 1912.

Patented Dec. 16, 1913.

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COLUMBIA PLANOGRAPH co., WASHINGTON. D. c.

S. S. JACKSON.

LOOM FOR WEAVING BAGS, 6w.

APPLICATION FILED FEB. 2, 19 12.

Patented Dec. 16, 1913.

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s. s. JACKSON.

LOOM FOR WEAVING- BAGS, 6w.

APPLICATION FILED FEB. 2, 1912 Patented Dec 16, 1913.

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ENFFED SYATES FATEET @FFKQE SIMEON S. JACKSON, OF READVILLE, BOSTON, MASSACHUSETTS, ASSIGNOR TO THE STAFFORD COMPANY, OF READVILLE, MASSACHUSETTS, .A. CORPORATION OF NEW JERSEY.

LQOIVI FOR WEAVING BAGS, 860.

Application filed. February 2, 1912.

1 b all whom 7'25 may concern Be it known that I, SIMnoN S. JACKSON, :1 subject of Great Britain, residing at Readville, Boston, in the county of Suffolk, State of Massachusetts, have invented a certain new and useful Improvement in Looms for lveaving Bags, &c., of which the following is a specification, reference being had therein to the accompanying drawings.

The invention has been designed more particularly for application to what are termed bag looms, but the principles of the invention in part are applicable in various other connections as well in which changes from one order of shedding to another and back again are required to occur at predetermined intervals.

The invention has reference'to loom mechanism of the class in which, at intervals in the course of the weaving, changes from one weave to a different weave, and vice versa, are brought about by shifts of harness-cams whereby the order of treading is altered.

The invention has relation more particularly to the devices for controlling and pro ducing the shift.

It consists in novel devices which enable a short pattern-chain to be employed instead of the long pattern-chain which otherwise would be necessary.

It will be described more particularly with reference to its embodiment in a loom for weaving bags, and to its employment therein for controlling and bringing about the changes from tubular weave to the weave which unites or ties the sides of the tube together in solid fabric crosswise of the web, and from the latter weave to tubular weave again, and so on.

Embodiments of the features of the invention are shown in the accompanying drawings, in which latter,

Figure 1 represents part of a loom in side elevation, with certain portions broken away, and shows more I particularly, the first part of the invention. Fig. 2 is a rear elevation of the parts which are shown in Fig. 1. Fig. 8 is a plan of the jackshaft, shedding cams and treadles, and certain of the parts involved in shifting the movable camsegment. Fig. 4 is a front elevation of the pattern-devices. Fig. 5 shows one of the shedding cams and the shifting cam-segment employed in con- Specification of Letters Patent.

Patented Dec, 16,1913. Serial No. 675,032.

nection therewith, the ack-shaft being represented in cross-section. Figs. 6 and 7, respectively, are a plan View and a side elevation of the shifting cam-segment. Fig. 8 is a sectional view of the take-up devices.

Having reference to the drawings,The loomframe is marked 1, the crank-shaft being indicated at 2 in Fig. 1, and the cam-shaft being represented at 3 in Figs. 1 and 2.

A set of shedding cams is represented at 4, 5, 6, and 7, fixed upon a jack-shaft 8, which latter is driven from the cam-shaft 3 by means of a spur-gear 9 fixed upon the jack-shaft and a spur-gear 10 fixed upon the cam-shaft 8. The said cams actuate the treadles 4*, 5, 6, and '7 which are connected in usual manner with the harness-frames.

At 11 is a cam-segment which is sleeved upon the jack-shaft 8 and is movable along the latter. The cam-segment 11 is caused to rotate in unison with the cam 7 by means of a fork l1 projecting from the hub 11 of the cam-segment and receiving between its branches a projection 7 extending from one side of the cam 7. The cam-segment is movable into either the position occupied by it in Fig. 3, namely in the same plane with the cam 7, or into a position at one side of the cam 7 In the position first referred to, the cam-segment 11 cooperates with the cam 7 and with the other cams, 4, 5, and 6, in producing the required. harness action for weaving tubular fabric. In the other position referred to, namely that in which the camsegment 11 revolves in a plane at one side of the cam 7 and the treadle 7, without engagement with the said treadle, the four cams, 4, 5, 6 and 7, produce the required harness-action for the tie or solid weaving by which the upper and lower sides of the tube are stitched together. A groove 11 in the hub or sleeve 11 of the cam-segment 11 is entered by studs or projections carried by the forked end of a shifter-arm 12 that is mounted pivotally at 12 upon a fixed supporting-arm 13.

The shifter-arm 12 is pattern-controlled. The pattern devices, and the means and manner of combining the shifter-arm therewith, may vary in practice. Herein, the said shifter-arm is connected by means of a rod 14 to one arm of a bell-crank 15 which is mounted pivotally at 15- upon a stand 16 carried by the loom-frame 1, the other arm of the said bell-crank being connected by a rod 17 to a 'iattern-tinger 18 which is pivoted at 1S upon a stand 19 attached to the arch of the loom-frame. The said pattern-finger 1S rests upon the links or indicators of the pattern-chain 20 passing around and supported by a wheel 21 on a shaft 22 that is journaled in the said stand 19. The shaft 22 and the wheel 21 are rotated, for the purpose of feeding the pattern-chain 20 along under the pattern-finger 18, by means of a ratchet-wheel 23 fixed upon one end of the shaft 22, a pawl 24 adapted to engage the teeth of the said ratchet-wheel, and a bell-crank 25 pivoted at 25" upon the stand 19 and having the pawl 24 pivotally connected with one arm thereof, while the other arm of the said bell-crank is joined by a connection 26 to a crank-pin 27 carried by one end of the ackshaft 8. Through the described connections of the pawl 24 with the jack-shaft S, a fee ing movement of the pattern-chain, once for each round in the action of the harness rams, is provided for.

At 29, Fig. 1, is a hand-wheel upon the shaft 22, for convenience in turning the said shaft by hand when necessary, the said hand-wheel being omitted from Fig. 2.

When the pawl 24 is permitted to engage with the teeth of the ratchet-wheel 23, the shaft 22 and wheel 21 are rotated one step for a given rotation of the jack-shaft, and the pattern-chain 20 is fed along one step. When a low link or indicator of the said pattern-chain is presented to the pattern finger 18, the said pattern-finger is free to occupy its lowest position, and at such time a spring, such for instance as that shown at 14", Fig. 8, having one end thereof engaged with the fixed supporting-arm 13 and the other end thereof engaged with bell-crank 15, is permitted to act through the connected parts and the shifter-fork 12 to cause the said pattern-finger to occupy its depressed position and also cause the cam-segment 11 to occupy the same plane with the cam 7, as shown in Fig. 3. When a link or indicator of the pattern-chain 20 having an elevated portion, as at 20*, Fig. 4, is fed into position under the pattern-finger 18, it raises the said pattern-finger, and through the connections between the latter and the shifter-fork 12 the said shifter-fork is operated to move the cam-segment 11 to one side relative to the cam 7 It will be per ceived that in the case of the illustrated embodiment of the invention the low links or indicators of the patternchain indicate for tubular weaving and a high link or indicator indicates for the solid weave.

I provide as follows for a reduction in the length of pattern-chain; that is to say, for enabling the desired results to be attained in the weaving by means of an exceedingly short pattern-chain, I provide a controller for the pawl 24, by means of which to suspend the action of the said pawl upon the ratchet-wheel. 23, and I combine the said pawl-controller with a master pattern which is operativclycombined with the taking-up devices for the woven web. The said masterpattern rotates with a surface speed which may be the same as the rate of advance of the woven web, or may bear a predetermined ratio thereto. Through the pawl-controller it suspends the action of the pawl upon the ratchet-wheel 23 for a predetermined number of picks, and then ln'ings about one or more feeding movements of the pattern-chain, and so on. In the present instance the pawl controller consists of a rod 30, upon the upper end of which a prolongation of the pawl 24 rests. The rod 30 is held in positionby a guide 31 projecting from stand 19 and encircling the rod 30 adjacent its upper end. The rod 30 at its lower end is connected to one arm of a lever 32, which latter is pivoted at 33 upon the vertically slotted stationary guide 34 for the forward end of the worm-shaft 35 of the take-up motion. The said lever 32 has one arm thereof furnished with a pointed projection 32 which rests upon the periphery of the master-wheel, the latter being shown at 36 and being arranged to rotate in unison with the wornrgear 37 which is engaged and driven by the worm 38-01 the take-up worm-shaft 35. The said worm gear 37 is connected or geared in usual manner with the take-up rolls. The masterwheel 36 has notches or depressions in its periphery at 36 36 etc. When a raised portion of the master-wheel is presented to the pointed projection 32 of the lever 32, the said lever 32'is held thereby in a position which causes the pawl-controller at the upper end of the rod 30' to hold the engaging portion of the pawl 24 out of engagement with the teeth of the ratchet-wheel 23. Vhile this is the case the shaft 22, wheel 21, and pattern-chain 20, remain at rest, with the cam-segment 11 in the posit-ion which is indicated therefor by the link of the pattern-chain which happens to be presented to the pattern-finger 18. The suspension of the feed of the pattern-chain continues until the said raised portion of the masterwheel is carried past the pointed projection 32 of the lever 32, and a notch or depression 36 of the said master wheel is presented to the said pointed projection and the latter enters such notch. Thereupon the pawlcontroller moves so as to permit the engaging portion of the pawl 24 to enter into operative relations with the ratchet-wheel 23.

The notch is of a length proper to permit the projection 32 to remain therein through one rotation of the jack-shaft. pawl 24 is actuated from the jackshaft, it is afforded opportunity to rotate the ratchet- Since thewheel and pattern-wheel and thereby feed the pattern-chain along. When the rotating movement of the master-wheel carries the notch 36 past the pointed-projection 32 of lever 32, the succeeding raised portion of the master-wheel operates through the said lever and the pawl-controller 30 to suspend the feeding of the pattern-chain once more, and so on. In the present instance the master-wheel is shown formed with six notches equally spaced apart, and with six raised portions intermediate the said notches. If it he assumed that the master-wheel makes one revolution for one hundred and eighty picks, then each notch and succeeding raised portion of the master-wheel may be assumed to correspond with thirty picks. Thus the pattern-chain will be advanced one step for each thirty-picks. Each link of the patternchain, therefore, will represent thirty picks in the web. In the case of the chain shown in the drawings, in which the low links or indicators represent tubular weaving, the number of low links or indicators corresponds with the total number of picks in the tubular weave, divided by thirty. The raised link or indicator 20 corresponds with thirty picks of solid weave.

The crank 27 by which pawl 241: is actuated is so set with relation to the shifting camsegment 11, that the feeding movement of the pattern-chain, and the consequent shift of said cam-segment, shall take place when said cam-segment is entirely clear of the treadle 7. By actuating the pattern-chain positively from the jack-shaft the required timing can be secured with certainty. I do not regard it as practical to shift the camsegment under the direct control of the take up, because of the difliculty in securing proper timing. In the construction shown herein, the pattern-chain is advanced only once during a round of four picks, the camsegment is at the top every fourth pick, and the crank 27 is set upon the jack-shaft to cause the pawl 24 to be actuated to shift the pattern-chain only at that time.

In practice, the rockshaft 50, Figs. 1 and 2, of the weft-stop mechanism is provided with an arm 51 that is connected by a link 52 with a collar 53, Fig. 1, surrounding a portion of take-up worm-shaft 35, so that when the said rockshaft is rocked on detection of weft-failure the worm shaft is raised so as to disengage the worm 38 from wormgear 36. Thereby the taking-up is arrested, and recoil of the web and take-up rolls is permitted. I connect to the arm 51 a second rod, 53, having in its lower end a longitudinal slot 54 receiving a stud projecting from the lever 32. lVhen the said rockshaft 50 is rocked, the rod 53 acts to swing the lever 32 so as to withdraw the projection 32 thereof from the master-wheel, thereby lifting such projection out of a notch 36 if it should happen to be in one, and thus pro riding for the unobstructed recoil of the worm-gear and take-up rolls.

Having reference, now, to Fig. 8, at 61 is the spiked or sand-roll used in looms for weaving bags, etc. This roll is driven through its operative connection with Wormgear 36. The woven Web a is passed around a considerable portion of its periphery, and the strain on the web draws the latter so closely and firmly into contact with the said periphery that the web has a tendency to cling to the latter and become wrapped around the roll. At 62 is a clearer roll mounted adjacent the spiked or sand-roll 61, and driven by gearing at proper relative speed. The web passes from roll .61 to and over the roll 62. 63 is a pressure or friction roll cooperating with the clearerroll and resting upon the web so as to press it against the latter roll. Roll 63 is free to rise and fall in slotted guides 6%. Rolls (52, 63, draw the web from the roll 61. To prevent the web from clinging to roll 62 and becoming wrapped around the latter, a stripper blade 65 is mounted with one edge thereof adjacent the periphery of roll 62 so that it guides the web away from such roll.

The features of the take-up mechanism just described are not claimed herein. They will form the subject of a divisional application.

lVhat is claimed is:

1. In a loom, the combination with takeup mechanism, a series of harness-cams, and pattern-devices having a moving patternsurface and controlling said harness-cams to bring about changes in the weave in conformity with the indicators of said patternsurface, of a master-pattern moved by said take up mechanism in predetermined ratio to the taking-up and operatively controlling the actuating means of said pattern-surface, whereby the feeding of the pattern-surface is intermitted and the extent of the patternsurface is reduced.

2. In a loom, the combination with takeup mechanism, a series of harness-cams, and pattern-devices controlling said harness cams to bring about changes in the weave in conformity with the indicators of a patternsurface and having a feed-pawl for said pattern-surface, of a master-pattern moved by said take-up mechanism in predetermined ratio to the taking-up, and a pawlcontroller operatively combined with said master-pattern and through which the latter controls and intermits the feeding of the pattern-surface.

3. In a loom, the combination with takeup mechanism, a series of harness-cams, a

cam-shifter, pattern-devices in operative control of said cam-shifter and having a pattern-surface by which the shifting of the cams is controlled, and also feeding means for said pattern-surface, ofa masterpattern operated by the take-up mechanism, and means through which said 1nasterpattern controls and intermits the actuation of said 1mttern-surface by its feeding means.

at. In a loom, the combination with takeup mechanism, a series of harness-cams, a cam-shifter, pattern-devices having a pattern-surface in operative control of the cam shifter and an actuating pawl. for said pattern-surface, a pawl-controller, a masterpattern operated by the take-up mechanism, and a lever controlled by said master-pattern and controlling the pawl-controller to suspend and restart the actuation of said pattern surface.

5. In a loom, the combination with takeup mechanism, a series of harness-cams, a

cam-shifter, pattern-devices having a pattern-surface in operative control of the camshifter and means for feeding the said pattern-surface, a anaster-wheel having depressions and operated by said take-up mechanism, a movable member engaging with said master-wheel and through which the action of said feeding means is controlled, and weft-detector mechanism operatively connected to simultaneously arrest the takingup and disengage said member from the master-pattern.

In testimony whereof I affix my signature in presence of two witnesses.

SIMEON S. JACKSON.

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

Washington, D. G.

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