US1969001A - geier - Google Patents

Description

Aug. 7, 1934. R. E. FREEMAN 1,969,000

DANDY ROLL Filed March 5, i954 INVENTOR v RALPH E. FREEMAN BY MM/ A ORNEYS C. W. GEIER Aug. 7, 1934.

LOOM

3 Sheets-Sheet 1 Filed Oct. 51-, 1933 Mum INV TOR Con/EHO 6 ATTORNEYS Aug. 7, 1934.

c. w. GEIER 7 1,969,001

Loom

Filed Oct. 51, 1933 a Sheets-Sheet s INVENTOR Come/90 14 65/52.

ATTORN EYS Patented Aug. 7, 1934 55.11 1. p1,:

UNITED STATES PATENT OFFICE 0 Conrad 'Walter Geier, Hazleton/Pa assignor to ,Duplan Silk Corporation, New York, N. Y., a corporation of Delaware Applicatiomoctober 31, 1933, Serial No. 695;99i I 8 Claims. 7 (Cl: 139-336) The present invention relates to looms and occurs before the loom and the'lay have attained it particularly relates to the control of v the the proper operating speed. beating-up device of ,looms so as to avoid ir- To avoid these difiiculties it has been previregularities in weaving and excessive wear and ously necessary to train the weavers to actuate 5 strain on the, loom mechanism due torepeated the loom mechanism by hand so as to move the 60 stoppage and subsequentstartings of the loom. lay back to its back center position before the .qln'the operation of a loom the warp passes loom isstarted after astoppage. Since this through the heddles ofa plurality of harnesses manualoperation is quite laborious and involves which alternately elevate and depress certain a loss of time, considerable care and a certain '10 portions of the warp to formv sheds through= amount of skill on the part of the weaver, who 5 which the flying shuttles are thrown top1ace must usually simultaneously attend to several a. filler or weft thread in position. After the looms; it is often forgotten 'and neglected; parfiller or weft thread has been placed in position ticularly by untrained apprentice weavers, unless the reed carried on the lay of the loom moves the, most rigid supervision is had. 7 1:5 or. beats such weft or filler ,thread up to the i To produce, as far as possible, crack-free mer- 79 termination or fell of the woven fabric. ,g chandise even when the loom is started with the The quality and sales value of the fabric largely lay intermediate position due to negligence or depends upon the uniformity of the weave and forgetfulness of the weaver to move'the lay to its. it isQdeSirable that the weft or filler threads back-center position, it has been attempted in 20 be uniformlyspaced withinthe limit of observasome instances to maintain the lay connectors, 75 tion in the fabric. r i clutches, and other elements of the loom in per It. is therefore important that the beating -up fectcondition and substantially free of all play. operation be controlled so as to beat up each With the 10cm in this condition, the laywill be ofjthe uniform weftthreads with the same force forced to the proper beating-up; position at the g5 and to; the same position at the normal fell of fell of the fabric even though the loom be started 0 the fabric to produce a woven cloth of most with the lay substantially off back center. =Howsatisfactory quality. i 1 v ever, to maintain thiscondition of operation, it

,During the operation of a loom frequently it: isnecessai'y to make most frequent replacements becomes necessary to stop the loom because of of slightly worn parts and of the clutch linings to so breakage ofthe warp or weft threads, due-to eliminate very slight play arising during short 5 exhaustion-of the flller "in-the shuttles, in view running periods. of derangements ;,of the mechanism, or for' An ,object of the present invention is to provide numerousother reasons. A z means for assuring auniformweave of fabric If the lay is in its rearmost position 'or at; with substantial elimination of cracks in the back: center or is moved to such position 'before wovenifabrie and to avoid excessive strain and 90.

starting :Of the loom when-the loom has been wear upontheloom mechanism, even though the stopped, the next filler or weft thread upon being loom be frequently stopped and started, without placed within the sheds will be beaten unto the need of rigidlysupervisingxthe loom operators the; fell by the reed with substantially the same or weavers to make certai'n that the lay is moved 1 40. force'andimomentumtas-will result from the full to its back center. position and/or without the 5,

' throw orswingof-thelay. 1 a necessity of most: carefully adjusting the mecha- However, frequentlythe loom is spstopped that nism so that it will be in perfect condition and the lay will be in an intermediateposition be-. free ofall' play.

tween its foremost andtrearmost positions. Then; Another object is to providean attachment for when the loomissubsequently started, the filler looms which will assurethat the lay and/or 1( or weftthread will not be beaten up by the full beating-updevice will be in back centerposition stroke or .swing of the lay,.and'a greater space and that, thenext weft or fillerthread will be will=occur-between it and thelast filleror weft properly beaten into position by the fell by the thread beat-up at the fell with the formation full stroke-of the lay, which attachment is relato of a cracker a defect in the cloth. tively inexpensive and may be readily attachedto r, In addition to causing a defect in the fabric looms of standard construction without material aconsiderable strain and wear occ u rsupon' the alteration thereof. l i driving parts when, the lopm is started with they Other objects will appear during the course of lay being in advance of its forward beatingnip thepresent specification. a i stroke, since the strain and wear ofthe beat-up In accomplishing the above objects it has been 1.11;

1 nection 16 to a pivot ro loom frame 10.

found particularly suitable to provide an attachment which will lock the starting levers of a loom when the loom has been stopped with the lay in an intermediate position substantially forward of its back center. This device may be released and the loom may be started, when the loom operator or weaver actuates the lay manually to its rearmost or back center position. During normal operation of the loom the locking device is kept out of connection with the starting mechanism, until the loom is again stopped with the lay off back center position.

The above and other objects will appear more clearly from the following detailed description, when taken in connection with the accompanying drawings, which illustrate several preferred embodiments of the inventive idea.

In the drawings:

Fig. 1 is a diagrammatic with the latch device of the present invention assembled therewith when the loom is operating with the latch unlocked. v 1

Fig. 2 is a side view upon an enlarged scale of the device of the present invention looking in the same direction asFig. 1 with latch in locked position.

Fig. 3 is a top view of the latch device of the present invention taken in the direction indicated by the arrow 3 of Fig. 2. 1

Fig. 4 is a side view of the latch device of the present invention similar to Fig. 2 in the position to which it is moved before the lay may be started into operation.

Figs. 5 and 6 are transverse sectional views I respectively upon the lines 55, 66 of Fig. 2.

Referring to Fig. 1 the loom frame 10 is provided with a drive shaft 11 driven through a reduction gear arrangement by a motor (not shown). To the shaft 11 is connected the crank 12, a portion 13 of which is held within the split bearing 14.

To the flanges of the split bearing14 are connected the connector rods 15, which at their forward end are provided with a split bearing con- 17 on the structure of the lay 18.

The lay is provided with a lay sword 19 which bears upon the lay rocker shaft 20. The lay 18 carries the shuttle box structure 21,-the lay bed 22 and the reed 23.

At the rear of the loom is carried a suitablewarp let-off mechanism (not shown) and at the front of the 100m is carried a-suitable woven fabric take-up mechanism (not shown). The

. warp from the take-off mechanism passes through a series of heddles (not shown) which form the sheds 24, the woven fabric being indicated at 25. The lay 18 is shown toward the foremost position of the structure where it is about to beat up the last filler thread, (indicated rather out of scale) at 26, up to the fell or termination 27 of the woven fabric 25.

The flying shuttle (not shown) places the filler thread 26 in position when it is thrown across the-sheds 24 with the lay 18 toward the rearmost or back-center position, indicated at 30, the shuttle in its movement being guided by the reed 23 and the bed 22.

During the operation of the loom the motor is preferably continuously rotated and'the starting and stopping of the loom is controlled by the shipper lever 31 provided with the'handle 32, which lever 31- by a stud actuates the member 33. The member 33 is pivoted at 34 to the side view of the loom Pivotally connected at 25 to the lever 33 is the rod 36 which leads to the clutch (not shown) connected to the shaft 11.

The lever 31 is also provided with a lever element 3'7 pivoted at 38 to the loom frame 10, which element 37 through the linkage 39 and 40 actuates the rod 41 connected to a brake (not shown) also associated with the shaft 11. The hand wheel 42, as well as other mechanism, may be provided for adjusting the lay 18 to its rearmost position when the loom is stopped.

As is apparent, if the lay 18 as shown in Fig. 1 is stopped in advance of its rearmost position indicated at 30 so that it will not advance its full stroke before beating up the filler thread 26 into the fell position 27 of the woven fabric 25, the last filler thread 26 will not be beaten up with the some force and effect as the previous filler thread, with resultant formation of a crack, but it is also apparent that the operating mechanism of the loom being subjected to the strain of the beating-up before it has attained its proper operating velocity, will be severely strained and overloaded.

To assure that the weaver or loom operator will move the lay back to its rearmost position, the device of the present invention is provided to lock the starting mechanism when the loom is thrown out or stopped, with the lay-01f backcenter so that the loom cannot be started again until the lay has been moved back to substantially its rearmost position, unlatching the device.

The locking device of the present application is shown in small scale in Fig. 1 and in large scale in Figs. 2 to 6. It consists of a main bar which at its rear end is rigidly connected to a sleeve 51 pivotally mounted on the stud 52 extending outwardly from a plate 55. The sleeve 51 is retained in position upon the stud 52 by the split pin 53. The plate 55 is bolted as indicated at 56 to the loom frame '10. The lower edge of the bar 50 is provided with the notches 58 and 57 which cooperate respectively with the latch 60 and the dog 67. The latch 60 and the dog ment 61 which is provided with a central opening through which passes the brake rod 36. The set-screws 62 enable the block 61 to be adjustably connected to the rod 36.

As shown best in Figs. 2 and 4 it will be noted that the front edge 63 of the notch 58 in the bar 50 is inclined rearwardly to cooperate with the correspondingly shaped projection 94 on the latch 60.

To the side of the block 61 is attached the bar 64 by the screws 65. The rear end 66 of said bar is provided with an inwardly directed flange forming the dog 67 which extends within the notch 57. The upper edge 68 of the dog 67 is adapted to contact with the inclined side 69 of the notch 57 as indicated in Fig. 1.

As indicated inFig. 1 when the loom is operating, the notched arm 50 is elevated from the block 61. However, when the rod 36 is moved rearwardly, upon stoppage of the loom, when the lever 31 will be moved back to the position shown in dotted lines in Fig. 1, the latch 60 and the dog 6'7 will engage with'th'e notches 58 and 57 of thebar 50. I f 7 Also connected to the sleeve 51 inside of the latch bar 50 is the arm 70, the upper portion 71 of which is twisted at an angle of 90 to the bottom portion. 'Theupper portion 71 is provided with a tapped hole 72 receiving the screw 73 which is locked thereto by the nut '74. At the 67 are carried by the ele-

Images