Patent Publication Number: US-3874419-A

Title: Guiding attachment for heddle supporting shaft

Description:
United States Patent [1 1 Wagner Apr. 1, 1975 54 Cl &#34;DING ATTACHMENT FUR HEDDLE 3.470.910 iii/I96) Katufmunn ct all l3J 9I 1 M&#39;PPORTN&#39; H FOREIGN PATENTS 0R APPLICATIONS i lnwmo Them,&#34; airmen HePPStrmu ms 2mm Switzerland 139 01 74l l Rcutlingen-Betzingcn. (Berni-any 22 Filed: Feb. 28,1974  
  2| Appl. No. 447.008  
 {30! Foreign Application Priority Data Mar W73 (iermtm ll8737ll} [52] US. Cl. 139/9! [51] Int. Cl. .l D03c 9/06 {58] Field of Search, 139/55. ll. 92  
 [Sol References Cited L&#39;N&#39;ITED STATES PATENTS 3,4l7r78 l2 i965 Kaut&#39;mzmn U l39/4l Primary [tumbler-Henry S. .laudon i l ABSTRACT A multi-purt guiding attachment for heddle supporting shafts of looms. said attachment having a first part of the attachment rigidl connected to the shaft. and a second part detachabl connected to such first part The sections or parts of the attachment are aligned in a common plane through a tongue and groove connection the parts or sections being detachzihly connected to each other by means of a nut and bolt on latch arrangment.  
 10 Claims. 7 Drawing Figures PATENTEI] APR 1 I975 FIG-.3  
  AYEHYED APR 7 1975 GUIDING ATTACHMENT FOR HEDDLE SUPPORTING SHAFT This invention relates to a guiding attachment for a heddle supporting shaft of the loom. Such attachment permits the operation of heddle supporting shafts of large dimension in such a manner that confronting attachments do not touch while they are moving in either the upward or the downward direction.  
  There are already known several embodiments for weaving shafts guiding attachments (German Offenlegunsehrift&#34; No. l,7 l0,427 and US. Pat. No. 3,251,383) which are usually a one piece construction and are either rigidly or detachably mounted on the heddle supporting shaft. When automatic warp threading machines are employed. the guiding attachment interferes with it. The known detachable guiding attachments all have the disadvantage that there is no assurance that during operation of the loom relative shifting between guiding attachment and the heddle supporting shaft would not occur. Such shifting should be eliminated or prevented under all circumstances.  
  The invention has among its objects the provision of a guiding attachment for heddle supporting shafts which is securely and rigidly attached to the shaft, which may be made of any necessary vertical dimension. and nevertheless will not interfere with the use of warp threading machines.  
  In accordance with the present invention, the guiding attachment is constructed of several superposed parts, and preferably in two parts or sections of which the first section is rigidly connected with the heddle supporting shaft while the second section is detachably connected to the first section.  
  Among the advantages of such a guiding attachment is the fact that the detachable head piece may be removed prior to the use of the warp threading machine; also, the fact that the first section is rigidly connected with the shaft guarantees a rigid connection between the attachment and the rod without any shifting between them and with an exact positioning of the guiding attachment on the shaft.  
  The above and further advantages of the invention will become more readily apparent upon consideration of the specification and the appended drawings, in which:  
  FIG. I is a view in front elevation of a heddle supporting shaft of the loom, the shaft being provided with two guiding attachments;  
  FIG. 2 is an enlarged view in front elevation of a first embodiment of guiding attachment in accordance with the invention. such attachment being shown secured to the lower portion of the heddle supporting shaft, shown in FIG. 1;  
  FIG. 3 is a view in vertical cross-section to the guiding attachment, shown in FIG. 2, the section being taken along the line lll-|Il of FIG. 2;  
  FIG. 4 is a view in front elevation of a second embodiment of guiding attachment connected to the lower portion of the heddle supporting shaft of the loom;  
  FIG. 5 is a view in side elevation of the guiding attachment shown in FIG. 4, the view being taken from the point of view line 55 in FIG. 4;  
  FIG. 6 is an exploded view in front elevation of the second embodiment of guiding attachment, shown in FIG. 4;  
  FIG. 7 is an exploded view in side elevation of the guiding attachment, shown in FIG. 6, the view being taken from the line 7-7 in FIG. 6.  
  In FIG. 1 there is shown a heddle supporting shaft of the loom, such shaft consisting mainly of parallel upper and lower shaft rod 1 and 2, respectively, which are connected by longitudinally spaced parallel side supports 3 and 4. The upper and lower shaft rods 2 are provided with heddle supporting channel formations 5 and 6 respectively, and with upper and lower guiding attachments 7 and 8, respectively. Since the guiding attachments 7 and 8 are similar, except for being disposed in mirror-image relationship with respect to each other, a detailed description of the lower guiding attachment 8, shown in detail in FIGS. 2 and 3, will suffree. The guiding attachment 8 is composed of an upper part 9 and a lower part 10, the two parts being detachably connected to each other. Parts 9 and 10 are advantageously made of wood. The upper part 9 has a central channel 18 therein which snugly receives the lower shaft rod 2 and is rigidly attached thereto as by gluing and the like. As can be seen in FIG. 3, the two parts 9 and 10 are of flat, relatively narrow dimensions, such parts being maintained in a lined coplaner relationship by a tongue and groove connection, generally indicated at 12, in this instance the tongue being located on the upper part 9 and the groove being disposed in the lower part 10 of the guiding attachment.  
  The parts 9 and 10 are securely connected together in aligned relationship by a screw 11 which is disposed with its head in a laterally central bore 16 in a part l0, the shank of the screw extending upwardly through a smaller bore at the upper end of the bore 16 and into an insert l5 having internal threads 17. The screw, preferably, has a hexagonally socketed head so that it can be turned by an Allen wrench. The insert 15 is preferably made ofa synthetic resin, such as nylon, having a relatively high coefficient of friction with the metal of the screw 11 so that once tightened the screw I1 is virtually locked from becoming loosened and accidentally unscrewed.  
  In order to prevent the screw 11 from becoming lost when it has been unscrewed from the insert 15 and the parts 9 and 10 have been separated, the lower end of the bore 16 in the part 10 is provided with an inserted sleeve 13 having an inner diameter which is smaller than the outer diameter of the head of the screw 1]. The sleeve 13 preferably has the lower end of the bore therein flat or beveled, as shown at 14, so as to facilitate the insertion thereinto of the above-mentioned Allen wrench for assembling and disassembling the parts 9 and 10 through turning of the screw 11 in the appropriate direction.  
  In the second embodiment of the guiding attachment ofthe invention, the attachment is likewise made in two parts, the first for upper part, being designated 9&#39;, and the second or lower part being designated 10&#39;. Thus, in the first embodiment, the upper or the first part of the attachment receives the shaft rod 2 in a central slot or groove 18&#39; therein, the parts being rigidly connected as by gluing. Parts 9&#39; and 10&#39; are connected at a tongue and groove connection 12&#39;, the tongue in this instance being disposed on the part 10&#39; and groove being on the part 9. Instead of the screw and nut employed for securing the two parts of the guiding arrangement together in the first embodiment, in the second embodiment there are employed quickly and easily operated matching arrangements for this purpose. The righthand edge of the assembled parts 9&#39;, 10&#39; are provided with a central vertically extending groove of which the section in the part 9 is designated 19 and the section in the part 10&#39; is designated 29.  
  A similar but oppositely disposed groove is provided in the left hand edge of the assembled parts 9&#39;. 10&#39;, the section of such-groove in part 9&#39; being designated 20 and the section in part 10&#39; being designated 30. Spanning the section 19 of the groove and the right-hand edge of part 9 is a cross pin 21, and spanning the section 20 of the groove in the left hand edge of the part 9&#39; is a cross pin 22. Similar but oppositely disposed levers 2S and 26 are pivotally mounted upon pivot pins 27 and 28 which span the groove sections 29 and respectively in part 10, the levers 25 and 26 lying partially in the groove sections in the respective parts 9&#39;, 10&#39;. The upper ends of the levers 25 and 26 are provided with inwardly open, confronting slots which receive the respective cross pins 21 and 22. When the parts 9&#39; and 10 of the guiding attachment are assembled, as shown in FIGS. 1-5, the cross pins 21 and 22 are received in the slots of the respective levers, a position somewhat spaced from the bottoms of the V&#39;s. The upper ends of the respective levers 25, 26 are provided with projections or buttons 23 and 24 respectively which project outwardly of the slot sections 19 and 20. Upon the pressing toward each other of the buttons 23 and 24, the parts 9&#39; and 10&#39; of the guiding attachment are thrust strongly towards each other.  
  The levers 25 and 26 are constantly urged into a latching position by coil compression springs 33 and 34. disposed in blind bores 35 and 36 respectively in the part 10&#39;. The springs 33 and 34 act compressively upon the respective levers 25 and 26 in order to thrust them into their latching position. Such springs can be overcome, however, so that the levers may be swung to free the cross pins from the slots in the levers by pressing together projections or buttons 31 and 32 which are provided on the lower ends of the levers 25 and 26 respectively. such buttons normally projecting at a substantial distance beyond the respective side edge of the part 10&#39; in order to be readily engaged by the hand of an operator.  
  Although the invention is illustrated and described with reference to a plurality of preferred embodiments thereof. it is to be expressly understood that it is in no way limited to the disclosure of such a plurality of preferred embodiments, but is capable of numerous modifications within the scope of the appended claims.  
 What is claimed is:  
 l. A multi-part guiding attachment for heddle sup- 5 porting shafts of looms comprising a first part rigidly connected to the shaft, and a second part detachably connected to such first part.  
  2. A guiding attachment according to claim 1, wherein the parts are aligned in a common plane 0 through a tongue and groove connection.  
  3. A guiding arrangement according to claim 1, wherein the parts are connected together by means of at least one screw.  
 4. A guiding attachment according to claim 3,  
 5 wherein the screw is situated in a channel of the second detachable part, the screw being secured against dropping out of the channel by means of a shell of which the inner diameter is smaller than the diameter of the head of the screw.  
  5. A guiding attachment acording to claim 4, wherein the shell has an enlarged outer end to facilitate the insertion of an Allen wrench.  
  6. A guiding attachment according to claim 3, wherein the screw is threaded into an insert which is screw.  
  7. A guiding arrangement according to claim 1, wherein the parts are detachably connected with each other by means of a latch arrangement.  
  8. A guiding attachment according to claim 7, wherein the latch arrangement comprises a spring loaded latch disposed on a side edge of and pivotally situated in the second part of the attachment, such latch cooperating together with a cross pin which is arranged in an opensided recess in the first part of the attachment.  
  9. A guiding attachment according to claim 8, comprising two similar latch arrangements disposed on opposite side edges of the second part of the attachment.  
  10. A guiding arrangement according to claim 9, wherein the latch arrangements are flat levers disposed in recesses on the side edges of the second detachable part, and comprising springs inserted in blind holes in the second part. said levers have knobs which partially protrude from the second part of the guiding attachment.  
 made of synthetic resin to avoid the detachment of the