US1322730A

US1322730A - rhoades

Info

Publication number: US1322730A
Authority: US
Publication date: 1919-11-25
Anticipated expiration: 1936-11-25

Description

A. E. RHOADES.

TERRY LOOM.

APPLICATION FILED SEPT. 16. 191e.

l1 I l i I l l l I I I l ll A. E. RHOADES.

TERRY LOOM. APPLICATION HLED SEPT. \6. 191s.

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TERRY LOOM.

AaPLlcATmN FALLED SEPT. la, wis. 1,322,739., Patented Nov. 25, 1919.

A 5 SHEETS-SHEET 4- w ufff/y A. El HHOADES.

TERRY Loom. PPLlCATlON HLED SEPT. 16, 191B.

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narran rATnnT ernten..

ALONZO E. RHOADES, or HOPEDALE, MASSACHUSETTS, AssIGNoR To DRAPER CORPORA- Tron, or HornDALn, MASSACHUSETTS, A CORPORATION or MAINE.

- TERRY-LOOM.

Specification of Lett-ers Patent.

Application filed September 16, 1918. Serial No. 254,326.

To all ill/0m t 'may concern:

Be it known that I, ALoNzo E. RHoADEs, of Hopedale, in the county of Vorcester and State of-B/Iassachusetts, have invented `certain new and useful Improvements in Terry- Looms, of -nIhich the following is a. specification.`

In terry looms of the character that weave towels tcomnonl 1 known as Turkish) it is customaryfto have such an organization that alternating stripes of plain fabric and of pile fabric can befwoven at both ends of the pile body. The present improvements consist in a. pattern mechanism determining such weaving. The pattern mechanism controls thc beat-up motion, the let-off and the let-back.

The terry or pile weave in such looms has customarily been effected by varying the effective stroke of the beat-up of the reed. During a succession of partial forward beats (two being a usual number) of the reed, the reed doesnot carry the picks of weft forward to the fell of the cloth. Then follows a full forward beat of the reed carrying the several picks of weft forward together, and thus piling up the warp threads extending between the group of picks and the fell of the cloth. In order to weave a plain stripe the reed is given its full forward movement at each pick. The beat-up motion which thus effects the different forward beats of the lay is well known forms. In some cases the reed is movable on the lay; in others, the stroke of the lay is varied; and in still others the position of the crank shaft forward and back is changed. A typical example is shown in United States Letters Patent of Bardsley No. 937,139, October 19, 1909. The pattern mechanism constituting the present invention controls the beat-up motion and thereby determines the character of the weave whether plain or terry.

It is also customary in terry looms to have a positive let-off which acts at each full forward beat of 'the reed during the terry weave but not otherwise. A typical example is lshown in Ilnited States Letters Patent of Crowley No. 785,895, March 21, 1905. The present pattern mechanism acts to suspend the positive let-ott' during plain weaving.

Also, the cloth and warp have been let back in changing between plain/and terry weaving to avoid slacliness in tlic fabric at in several different those points, and at intervals during the plain weaving to insure conipactness in the fabric. Mechanism for this purpose is disclosed in an application for Letters Patent of the United States of Charles F. Merrill, Serial Number 250,045, tiled August 15, 1918. The present pattern mechanism controls the let-back.

The present improved pattern mechanism is illustrated in the accompanying drawings,

in which* e Figure 1, is a side view of the pattern mechanism. Fig. 2, is a front view. Fig. 3, is a plan view. Fig. 4, is a horizontal section in the plane indicatedv by the line 4 4 in Fig. 1. Fig. 5, is a vertical Section in the plane indicated bythe line 5-5 in Fig. 1. Fig. G, is a vertical section in the plane indicated bythe line 6*(3 in Fig. 2. Fig. 7, is a vertical section of the rear of the loom illustrating the let-off. Fig. 8, is a' detail vertical section in the plane indicated by the line 8--8 in Fig. 7.

The improved pattern mechanism controls the beat-'up motion, the let-back and the letoff through two

actuators

10, and 11, (Figs. 2, 3, and 5) each shown as a lever pivoted at its outer end.

A wire 12, leads from the inner end of the forward actuator 10, to the let-back motion which may be identical with that Set forth in the aforesaid application of Charles F. Merrill. The let-back motion itself constitutes no part of the present invention. It suiiices to know that whenever` the let-back actuator 10, is lifted its motion is transmitted through the wire 12, and the clothand warp are let-back. As soon as the actuator 10, drops, the let-back action ceases. wire 1 2, is thus a symbol or representative of the let-back motion, and constitutes an operative connection thereto. i

A wire 13, leads from the inner end of the rear or terry actuator 11, to the beat-up motion. The beat-,up motion itself constitutes no part of the present invention. It may be identical with that set forth in the aforesaid Bardsley patent or in the aforesaid Merrill application. It sulhces now to know that when the terry actuator is down, the terry weave continues; and, when said actuator is raised plain weaving is done. The wire 13. thus serves as a representative of the beat-up motion, and constitutes an operative connection thereto.

The

A second wire 14, leads from they inner yend of the terry actuator to the let-olfv which is shown in Fig. 7. The terry warp 15, runs from the usual terry warp Abeam (not 1 shown) under idle roll 16, thence around rough surfaced leto' roll 17, thence over i and under idle roll 18, and thence toxthe harnesses. Fast with the roll 17, is a ratchet wheel 1-9, acted uponbya spring pressed'h pawl.20. This pawl is pivotally connected to the upper end ofI a reciprocati '.nected to a crank arm 22, fast' on -a rock# shaft 23. A second arm 24, fast on the shaft 23, has .av-cam roll 25, traveling in the camA groove of a cam 26,'fast on the. back-shaft.

v 2,7, of the loom. As the shaft 27 rotates, the

pawl 20, feedsthe let-off roll 17, positively forward. The backsshaft 27, is geared to 'the lcam shaft of the loom soas to rotate continuously, and at such a relative speed and timing that the let-,off roll is rotated positively at each full 4forward beatfof the reed, thus feeding 'the warp as the piles v,are

formed. In `this respect the action is .likel that of the aforesaidCroWley patent.

The wire 14,'from the pattern controlled i terry actuator 11, is connected at its lower endwith one arm 28, of a bell cran-k lever,

the other arm 29, of which is connected by 4a link 30, .with the pawl 20. When thel terry actuatoa` is lifted, as indicated in Fig. 7, the

ratchet at each rotation of the bac shaft. Fig. 7, shows at 31, the ground warp beam,

from which the ground warp 32, runs over' the whip roll 33, tothe harnesses. v

The movements of the two

actuators

10, and 11, thus determine the character of the weave, and the action of the let-olf and `letback; and are controlled by the illustrated pattern mechanism.

The pattern mechanism is driven from the crank shaft 34, (Figs. 1, 2 and 4)- of the loom.` A t its outer end'at one side of the loom the lcrank shaft has a bevel gear 35,

` meshin with a bevel gear 3.6, on a short shaft 3 which at its other end (Fig. 1) has a worm 38. This worm engages a worm wheel 39, on a short shaft 40, which also has av spur -gear 41, meshing with a pinion 42, on a third short shaft 43. This shaft 43, has a detachable cam 44 (Figs. 1 and 4) which acts upon the toe l45, of a pawl lever 46, pi-voted at 47. A spring 48, maintains the lever toe 45, in contact vwith the cam 44. Thus the pawl lever 46, is oscillated automatically at a rate dependent upon the "ear relation between the

shafts

34, and 43, which rod 21,. the lower end of which is adjusta ly confect desired. lWith the illustrated gearing,

the'pawl lever is oscillated back and forth nct for twentyseven rotations of the crank Totllc upper end 49, of the pawl. lever is j pivotedat 50, a' gravity pullin hooked awl 51, which reste upon a rate et whee 52. The ratchet wheel, as shown in Fig. 5, is detachably secured to a hub 53, which turns on a fixed stud 54. The hub 53, has the lcan be regulated in accordance with the ef- I' i pattern cam. wheelV 55. -The pattern cam wheel .is advanced a step at each oscillation l of the pawll lever, and a towel is woven for each of its revolutions. 'In the illustrated embodiment, the ratchet wheel has sixtyfour teeth; so that a towel would .be producedhaving one thousand seven hundred and twenty-eight picks of weft. `This is representative only. A different relation of gears, a cam differing in throw from that of the cam 44, and a ratchet wheel 52, with a different number of teeth, canbe. employed. All of these elements are readily detachable, so that elements `of a similarand modified character can be substituted.

' The pattern cam `wheel carries two setsV of detach-able and adjustable cams for the' two

actuators

10 and 11. As shown, there is one set of four

cams

56, 57, 58, and 59, coperating withy the terry actuator 11; and

61, coperating with the let-back transmitter 10. Each

vcam

56, 57,58, and 59, is circumferentially adjustable on thewheel 55, by means of a slot 62, (Figs. 5 and6) in a single block 60.ha ving another set of cams the cam wheel, and a headed screw 63, eX-l l tending through the slot and tapping into the cam. The block '(60, is circumferentially adjustable by vmeans of the two slots`64, and the headed screws 65. As shown vin Fig. 3, the two

intermediate cams

57 and 58 overlap each other longitudinally, therebyforming partsof a longitudinally extensible cam.

The terry actuator 11, has a depending foot.

66, coperating with `the set of

cams

56, 57, 58, and 59. The cam wheel 55, rotates in the direction of the arrow (Fig. 6), and the meeting faces of the foot and cams are beveled to facilitate the riding of the foot onto the cams.

During the rotation of the cam wheel 52, after the cam 59, has passed the terry actuator and until the cam 56, is reached, the terry actuator is down, terry weaving is done, and the positive let-off is ir: action. Vhen the cam 56, reaches the foot 66, of the terry actuator, that'actuator is lifted, thus establishing plain Weaving and suppressing the positive action of the let-oli'. Plain Weaving continues until cam 56, passes the foot 66. Thereupon actuator 11, drops, and terry Weaving and the positive action of the let-ofi' are resumed. This condition remains until the cam 57, reaches the foot cams illustrated, a

ascenso l y Vfoot 66, and the actuator 11,l 'u drops.

Thereupon terry weaving' with t e positive,

action of the let-olf is resumed until the cam 59, reaches the foot 66,* and'lifts the actuator. Plain weaving with `no poeitive action of the let-off then continues until the cycle of rotation of the cam wheel 52 is com pleted. With the sisting of repetitions of a long body of terry weave, followed by shortA stripes of plain and terry weave, then a long band of plain weave, and finally short stripes otterry and plain weave. Towels are made from the fabric by cutting across through the middle of the long bands of plain weave (due to the cams 57, and 58); and, each towel has a terry body with a narrow stripe of plain Weave and a narrow stripe of terry weave near each end, and at each end a stripe of plain weave.

The

cams

56, and 59, are circumferentially adjustable so as to vary the length of the terry body of the fabric. The longitudinally extensible ca-m, constituted by the two overlapping

parts

57, and 58, can be adjusted so as to vary the length of the long' band of plain weave and the widthof the narrow stripes of terry weave. .The several cams 56 to 59, are readilydetachable, and can be replaced by di'erent cams, so as: to still further vary the character of the i weave.

. The let-back actuator 10, has a beveled foot 67 (Fig. 6)' coperating with the cams 61. When one of the 4cams 61, asses the foot67, the actuator l0, rises an immediately falls, thus letting back the cloth and warp one step only and immediately resuming the normal action of the take-up. This is due tothe circumstance that the cams 61- are so related to the teeth of the ratchet 52, that the foot 67 never dwells at the top of a cam but Vonly at its bottom. .Accordingly,

the foot 67, dwells for along interval at` the bottom of one of the cams, and each cam is moved rapidly beneath and past the fpot by the spring effected working stroke of the pawl lever. In this connection, it will be noted that the feed of the cam Wheel is effected 'by the spring 48, which imparts the working stroke to the' pawl lever. The cam 44, slowly gives the idle return stroke to the pawl lever and compresses the spring.v The cams 56 to 59 have a lead over the cams 61, so as to compensate for the position of the actuator 11, ahead of the actuator 10, with respect to the rotation of the cam wheel. With the specific cam relation shown, the let-back action takes place as the change is made between terry andplain weaving,

" and also at ever .When the lmain body of the cam cie. arrangement ofA brie is produced consadvance step of the ratchet wheel during t e plain weave. The block Acarr ing the cams 61, is readily detachable, 1

so t at a proper block can be used and ad- -justed in place for-each different arrangement of the cams 56 to 59;

below :the .

feet

66, and 67 the actuatorll, and 10 i rest upon the fixed shouldered 4stop 68. j he hub.53, with the cam wheel v55,. and

-ratchet Wheel 52, arel removable from the' stud. The outer end ,of thehstud is screw threaded .to receive

nuts

69, 70. By removing thesenuts, the hub 53,' can 'be taken off.

This facilitates changing cams and ratchet wheels.

To prevent the ratchet wheel 52,1and cam wheel 55, overrunning'under the` impulse 'of the pawl 51, friction pads (of felt, prefwheel is.

Aso

era'bly) 71, are interposed between the ends 'i of the hub 53, and disks 72, slipped upon the stud 54, as shown in Fig. 5.

A pivoted gravity" detent 7 4, prevents l backward' turning of the ratchet Wheel 52. A fixed pin 75, limits the outward swing of the datent.

I claim- 1. A terry loom having a terry actuator l operatively' connected tothe beat-up motion .and the let-on", andl a let-back actuator operatively connected to the let-back, in combination with a pattern mechanism controlling the movement of said' actuator and comprising a cam wheel, two sets of cams adjustably and detachably mounted on said wheel, one set of cams cooperating with the terry actuator comprising a longitudinally extensible cam consisting of two overlapping parts and the set also including other cams separated from each other and the' extensi? ble cam, and the other set of cams coperating with the let-back actuator and all carried by a single block, said cams acting upon the let-back actuator when the terry actuator is both raised and lowered. and also at'intervals when the terryactuator remains lifted, a 'ratchet wheel connected with the cam wheel, a pawl lever acting upon the ratchet l wheel to move it step-by-stepl after. a succession of beats of the lay, a springwhich gives the pawl lever its working stroke, a

cam which moves the pawl lever in opposition to the spring, andfriction pads acting upon the ratchet Awheel to prevent overrunning.

2. A terry loom having a terry actuator operatively connected to the beat-.up motion and the let-off, and a let-back actuator operatively connected to the let-back, in combination-with a pattern mechanism controlling the movement of said actuators and comprising a cam wheel, two sets of cams adjustably and detachably mounted on said wheel, one set of cams coperating with the lterry actuator comprisingV a longitudinally eXtensible cani consisting of two overlapping parts and the set also including other cams separated from -beats of the lay, a spring which givesv the pawl lever its working stroke, and a cam which moves the pvawl lever in opposition i to the spring.`

3. A terry looni having a tei'ryiactualtor operatively connected to the beat-up motion and the' let-oil", and a let-back actuator operatively connected to the let-back, in`

combination with a pattern mechanism coni trolling the movement of said actuators and -con'ip'rising v'a cam wheel, two sets of cams adj ustably and detachably mounted on said wheel, one set of cams cooperating with the terry actuator comprising a longitudinally extensible cam-'consisting of two' overlap-' ping parts and the set also including other cams separated Jfrom each other and the extensible cam, and the other set of cams cooperating with the let-back actuator and all carried vby a single block, said cams acting upon the let-back actuator when the terry actuator is both raised and lowered and also at Yintervals when the terry actuator remains lifted, a ratchet wheel connected with the cam wheel, and a pawly acting upon the ratchet wheel to move it step-by-step after a succession of beats of the lay. y

4. A terry yloom having a terry actuator 'and let-back actuator operatively connected to the let-back, in combination with a pattern mechanism controlling the movement of said actuators `and comprising a. cam

Y. wheel, two sets of cams adjustably and detachably mounted on said wheel, one s et of cams cooperating with the terry actuator comprising a longitudinally extensible cam consisting qf two overlapping parts and the set also including other cams separated from each other and the "extensible cam, and the other setof cams cooperating with the let-back actuator.l and acting uponr the letback actuator when the terry Aactuator is both raised and lowered and also at intervals when the teiry actuator remains lifted,

a ratchet wheel connected Vwith the camr wheel, and a pawll acting 'upon the ratchet wheel to move it step-by-stcp after a succession of beats of the lay.

5. A terry loom having a terry actuator,

and a let-back actuator operatively connected to the let-back, combination with a pattern mechanism controlling the movement of said actuators and comprising a cani wheel, two sets of cams adJustably and de- 'tachably mounted on said Wheel, one set of operating with the terry actuator and the other set of cams coperating with the letback actuator. Y

7. A terry loom having a terryv actuator and a let-back actuator, in combination with a pattern mechanism controlling the movement of said actuators and comprising a cam Wheel, and two sets of cams on said wheel, one set coperating with the terry actuator and the other set coperating with the letback actuator.

8. A terry loom having a terry actuator,

-in combination `with a pattern mechanism controlling the movement ot said actuator and comprising a cam wheel, and a set of cams adjustably andv detachably mounted on'said wheel andV comprising aI longitudinally extensible cam consisting of two overlapping partsV and other cams sepa-rated from each other and the extensible cam.

9. A terry loom having a terry actuator incombination with a pattern mechanism controlling the movement of said actuator and comprising a cam wheel, and a set of cams adjustably mounted on said wheel including a longitudinally extensible cam consisting of two overlapping parts.

10. A terry loom having a let-back actuato'roperatively connected to the let-back, in combination with a pattern mechanism controlling the movement "of said actuator and comprising a cam Wheel having a set of cams cooperating with the let-back actuator and all carried by a single block, a ratchet wheel connected with the cam lever, a pawl. lever acting upon the ratchet wheel to move it step-by-step after a succession of beats of the lay, a spring which gives the pawl lever its working stroke, and a camV which moves the pawl lever inV opposition to the spring.

A terry loom having a let-back actuator operatively connected to theI let-back, in

combination with apat'tern mechanism con-j trollingthe movement of said actuator and comprising a cani wheel having a set of cams cooperating with the let-back actuator.g f

a pawl lever acting upon the ratchet wheel imgr let-off,

` -actuaton 13. A terry loom havingY a positively acta machine driven pawl actuating the let-olf during the formation of the terry pile, a lever, and a link connecting-said lever and paWl, in combination With pattern controlled mechanism which automatically swings said lever to disconnect the paWl from the let-off thereby suspending the vpositive action of the let-o during the plain Weave.

14. A terry loom having a positively act ing let-oli, and a machine driven pawl actuating the let-oil during the .formation of y `the terry pile, in combination. with pattern controlled mechanism which automatically from the let-off thereby 25 disconnects the pawl suspending the positive action of the let-off during the plain Weave. In Witness whereof I have hereunto signed ALONZO n. RHoAnlEs.

Illy 11311118.