Патент USA US2132078код для вставки
Oct. 4, 1938. 2,132,078 |_. R. LINN HAND LOOM HEDDLE SHIFTING DE-VICE Filed March 16, 1938 3 Sheets-Sheet 1 %\ [away /Z [27277. INVENTOR my: é/mméa ATTORN EYS Oct. 4, 1938. 2,132,078 L. R. LINN HAND LOOM HEDDLE SHIFTING DEVICE 5 Sheets—Sheei 2 Filed March 16, 1938 z jeroy ATTORNEYS Oct. 4, 1938. 2,132,078 |_. R. LINN HAND LOOM HEDDLE SHIFTING DEVICE Filed March 16, 1938 5 Sheets-Sheet 3 jprqz/ ZZZZ')? 22 . INVENTOR 4 ATTORNEYS Patented Oct. 4, 1938 _ 2,132,078? UNITED STATES PATENT OFFICE . 7 2,132,078 HAND LOOM HEDDLE SHIFTING DEVICE I Leroy R. Linn, Sheboygan, Wis. Application March 16, 1938, Serial No. 196,276 6 Claims. (01. 139-33) This invention relates to-' hand loom heddle matter of this invention is shown to comprise a shifting devices and has for an object to provide disc I!) rotatably mounted on a shaft ll carried a device for facilitating easy and simple shifting by the horizontal cross bars l2 of the harness of the heddle frames. _ frame, there being one of these discs for each A further object is to provide a device of this heddle frame, four of such discs being shown in character having an automatic lock in the upper position of the heddle frame. ‘ A further object is to- provide a device of this character having means for releasing the heddle frames to gravitate to their lower position. A further object is to provide a device of this character having means for securing the device in an intermediate position for relieving tension on the warp while the loom is not in use. With the above and other objects in view the invention consists of certain novel details of con Figures 1, 2 and 3. Each disc is provided with a groove l3 in the periphery extending about an angular distance of 180 degrees and a pair of cables M are secured at one end to a common pin l5 ?xed at one end of the groove. The ends of 10 the cables are secured to the top of a respective heddle frame I5, near the ends thereof, and since the disc is located adjacent to one of the harness frame uprights it‘ one of the cables is compara tively short and is connected direct to one end of 15 the heddle frame while the other cable is com struction and combinations of parts hereinafter ‘ paratively long and is trained over a guide pulley ll secured to the harness frame bars l2. that various I modi?cations may be resorted to Each disc is provided with a radially extending fully described and claimed, it being understood within the scope of the appended claims without departing from the spirit or sacri?cing any of the advantages of the invention. In the accompanying drawings forming part of this speci?cation, ' _ Figure 1 is a cross sectional view of a handloom embodying a heddle frame shifting device con structed in accordance with the invention. Figure 2 is a side elevation of the parts shown in Figure l. 30 - Figure 3 is an enlarged plan view of the heddle frame shifting devices, pawls for holding the heddle frame at their upper limit of movement and trip for releasing the pawls to permit gravi tation of the heddle frames. CO CI! Figure 4 is a detail side elevation of the parts shown in Figure 3. _ Figure'5 is a detail side elevation showing the yoke for holding the heddle frame shifting de vices in an intermediate position for relieving 40 tension on the warp when the loom is not in use. Figure 6 is a fragmentary front elevation of the heddle frame releasing devices for an eight hed dle frame loom instead of a‘ four heddle frame loom. Figure 7 is a fragmentary side elevation of the parts shown in Figure 6. Figure 8 is a detail side elevation of a modi?ed form of the invention in which a single pawl is employed to automatically look all of the heddle frame shifting devices in position to ‘hold the frames raised. Figure 9 is a detail perspective view of the pawls shown in Figure 8. Referring now to the drawings, the heddle 55 frame shifting device comprising the subject handle i8 by means of which the disc may be rotated to wind the cable M on the disc and raise the respective heddle frame or to unwind the cables to lower the heddle frame. The handle engages a stop bar l9 on the harness frame to limit downward movement of the heddle frame. 25 As best shown in Figures 4 and 5 each disc is provided in the periphery with a shoulder 20 - adapted to be engaged by a respective pawl 2| which is pivoted above its longitudinal center upon a shaft 22 which’issecured to the harness 30 bars I2. When each disc is individually swung to wind up the’ cables and raise the respective heddle frame the respective pawl will be pulled against the shoulder 29 by a spring ll connected with the upper-end of the pawl and will automati cally lock the respective heddle frame at its upper limit of movement. A trip 23 in the nature of an inverted U-shaped bar, best shown in Figure 3, is pivoted at the ends on the shaft H and the cross member of the trip bears lightly upon the spring retracted pawls 2|. When the handle it of any one of the discs is forced against the cross member of the trip, it will be rocked on the shaft H to simultaneously release all of the discs and allow the heddle 45 frames to gravitate to the lowest limit of move ment. ‘ In order to relieve tension on the warp- while the loom is not in use a yoke 24 is pivoted at the ends on the harness frame bars 12 as shown at 25 in Figures 1, 3 and 5. The cross member of this yoke is adapted to be engaged against the shoulders 20 of all of the discs when the discs are rotated to an intermediate position of their travel and lock the discs in this position to hold the 55 2,132,078 2’. ‘raised position of the frames, and means for re leasing said pawls to permit the frames to gravi half the limit of their vertical movement. ‘While a four heddle frame operating device‘ 3. In a loom, the combination of heddle frames, has been described it is obvious that a greater harness bars, axially aligned peripherally grooved I number of heddle frames may be operated by sim discs rotatably secured to said bars above said ilar devices and as best shown in Figure 6 to heddle frames, cablescarried by each disc wind convert a four heddle loom into an eight heddle loom it is simply necessary to provide brackets 2'5 able upon the disc and connected to a respective ‘ heddle frame for raising and lowering the heddle which may be secured to the edges of the harness frame when the disc is turned, a. gravity operated 10' frame uprights it by straps. 28. which are se cured in- place by screws 29. The harness frame pawl common" to all of the'discs, shoulders on the discs engageable by said pawl to hold the horizontal ‘bars H! are then mounted on the edges heddle frames raised to a point substantially one tate. of these brackets, as best shown in Figures. 6 and. 7. Since the heddle frame operating devices ‘in " this embodiment of the invention are‘ identical with the heddle frame operating devices previ ously described they have been given identical reference characters. ' , r discs stationary at one limit of movement .to maintain the heddle frames, raised,.and means for releasing saidpawl to permit the discs to rotate in a retrograde direction simultaneously and. permit the heddle frames to gravitate. 4. The combination with the heddle frames A modi?ed form of the invention is shown in, 7 and the harness bars of a loom, of axially aligned Figures 8 and 9 and this form of the invention is somewhat simpler than the previously de scribed construction. In this modi?ed form of the invention each, disc 3| supports a pair. of cables 32 for raising and lowering the respective heddle frame. The disc is provided with a handle‘ 33 and at a- point adjacent the handle 'is-lpro vided with a stop shoulder 34. A single pawl 35 best shown in Figure 9, of the gravity operated type is pivotedv below its longitudinal center upon 30' agshafr-t. 36 which is secured at the ends to the horizontal harness, frame bars 31. rIfhe pawl en gages against the stop shoulder of any disc which may be rotated. to‘ raise its corresponding heddle frame and hold the heddle frame raised. Each disc is provided in advance of the stop shoulder with a- camvprojection. 38. By rotating. any one of the discs until its. cam projection 38 strikes against the pawl, all of the discs previ ously locked in a position to hold their respective heddle frames raised, will be simultaneously re leased. - ' ‘ From the above description. it is. thought that the construction and operation of the invention will be fully understood without further explana . tion. - What is claimed is: , 1. In a loom, the combination with heddle frames and horizontal cross bars of a harness frame, of a plurality of axially aligned discs ro ztatab-ly secured to said bars each disc havinga grooved peripheryi, a pair of cables secured in the’ groove of the periphery and connected to a re spective heddle frame for raising and lowering - the frame when the disc is rotated, means carried by said bars and engaging the discs-to automati 55'. cally lock the discs- stationary to- hold the heddle frames raised, and means for releasing said means simultaneously to permit the heddle frames to gravitate. ' . 7 , 2.v In a loom, the combination with heddle frames and harness bars, of a plurality of axially aligned discs superposed above the heddle frames and rotatably secured to said bars, a pair of cables connected to each disc and to a. corresponding heddle frame and adapted to be wound on the 65 periphery of the disc or unwound therefrom to respectively raise or lower said heddle frame, 60' each disc having a stop shoulder formed on the periphery thereof, spring pressed pawls con nected to said bars and‘ adapted to engage said shoulder to hold the discs. stationary pin the discs rotatably mounted on the harness bars above respective heddle frames, cables carried by each disc and windable thereupon when the disc is rotated, the lower ends of. the cablesbeing connected to the upper corners of a respective heddle frame, guide pulleys carried by the bars over which'the cables are trained to maintain the heddle frame level, each disc having‘a stop shoul der on the periphery thereof, pawls carried by said bars and engageable with said shoulders to hold the discs stationary at one limit of move ment' to hold the heddle frames raised, and an inverted U-shaped trip pivotally connected to said bars and adapted to impinge against said pawls and release the pawls simultaneously from said shoulders to permit the heddle frames to . gravitate. UL _ - i 5. The combination w'th-the heddleframes and harness bars of _a loom, of axially aligned ro tatably mounted discs carried by the bars above respective ones of the frames, cables windable 40' upon the‘ discs and connected to respective hed- ' dle' frames for raising and lowering‘ the'frames, shoulders on the discs, pawls connected to said bars and engageable with the shoulders for hold ing the discs stationary tomaintain the heddle frames raised to their upper limit of movement, trip means carried by, the bars engageable with the pawls for releasing the pawls to permitthe frames to gravitate, and means carried by‘ the bars engageablewith said shoulders When the discs are in a substantially midway position of their movement for holding the heddle frames raised» to substantially one-half their, limit, of vertical movement to relievetension on the warp». when the loom is not in use. 6. The combination with the heddle. frames and harness bars of a loom, of axially aligned discs rotatably secured to said bars above re spective ones of the heddle frames, cables wind-4 able upon the discs and connected to said heddle 60 frames for raising an'dlowering the heddle frames when the discs are rotated, shoulders on the discs, pawl means engageablewith said shoulders for holding the discs stationary at one limit of move ment to maintain'the'heddle. frames raised, and cam projections on the discs in advance of said shoulders,>rotation of anyone of the‘ discs until its cam projection strikes against said. pawl means releasing said means'to-permit the heddle frames to gravitate. LEROYR. LINN.