US2388269A

US2388269A - Warping or beaming machine

Info

Publication number: US2388269A
Application number: US459539A
Authority: US
Inventors: Lambach Fritz
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-11-21
Filing date: 1942-09-24
Publication date: 1945-11-06
Anticipated expiration: 1962-11-06

Description

Nov. 6, 1945. F. LAMBACH WARPING OR BEAMING MACHINE 7 Sheefns-Sheet 1 Original Filed Nov. 21, 1941 INVE/VT'dR:

Fn'tz. LAMf/HH i III? Nov. 6, 1945. F. LAMBACH WARPING OR BEAMING MACHINE Original Filed Nov. 21, 1941 '7 Sheets-Sheet 2 Original Filed Nov. 21, 1941 7 Sheets-Sheet 5 I IWE/YroR:

mu LA MjAzH f 0 A Trill/I 7 Sheets-Sheet 4 F. LAMBACH WARPING OR BEAMING MACHINE Original Filed Nov. 21, 1941 Nov. 6, 1945.

Nbv. 6, 1945. F. LAMBACH 1 81 WARPING OR BEAMING MACHINE Original Filed Nov. 21, 1941 7 Sheets-Sheet 5 524 Y [68 156 m I I IBM! 542 J "555 M3 I 17:3 4. ass a 3.14 I .152

IIVVENTO 3" Fritz [H [m lit-ta nl Nov. 6, 1945. F. LAMBACH WARPING OR BEAMING MACHI NE Original Filed Nov. 21, 1941 TSheets-Sheet 7 IIVVEI T RJ Trill.

QUNQQ Attorney.

Patented Nov.-

UNITED STATES PATENT OFFICE WARRING R BEAMING MACHINE Fritz Lambach, Tenafly, N. J.

Original application November 21, 1941, Serial No.

409,835, now; Patent No. 2,324,612, dated July Divided and this application Sep tember 24, 1942, Serial No. 459,539

17 Claims.

I This application is a divisional application divided out of my patent application Serial #419,835, filed Nov. 21, 1941, for A warping or beaming machine," which has matured into Patent #2,324,612 issued on July 20, 1943.

My invention relates to textile machines, and more particularly to warping or beaming machines.

An object of my invention is to improve upon the construction of warping or beaming machines as now ordinarily made.

My invention consists in certain novel features of construction of my improvements as will be hereinafter fully described.

Further objects and advantages of the invention will be apparent from the following disclosure of an embodiment thereof.

In the accompanying drawings are:

Fig. 1 an elevational view of a warping plant including a creel, a storage device, a warper and an A. C. to D. C. motor generator set, only the end portion of the creel being shown in the drawings,

Fig. 2 an elevational view of the warper as seen from the storage device, some parts of the warper being broken away,

Fig. 3 a sectional view of the warper taken on line 3-3 of Fig. 2, in an enlarged scale,

Fig. 4 a sectional view of the upper portion of the warper taken on line 4-4 of Fig. 3, illustrating the bracket carrying the idling head in its operative upright position,

Fig. 5 a fragmentary view of the right hand end of the warper as shown in Fig. 4, wherein, however, the bracket carrying the idling head is shown in its lowered inoperative position,

Fig. 6 a sectional view of the upper portion of the warperltak en on line 6-6 of Fig. 3,

Fig. '7 a sectional view of the upper portion of the'warper similar to that shown in Fig. 3 illustrating the pressure roll and the controlling mechanism connected therewith in difierent positions, some parts of'the warper being omitted or broken away for the sake of better illustration,

Fig. 8 a fragmentary. elevational view of the warper illustrating a. slidable carriage with an adjustable reed and table mounted thereon,

Fig. 9 a sectional view of a detail taken on line 9-9 of Fig.8,

Fig. 10 a sectional view of a detail taken on line Ill-l0 of Fig. 8,

Fig. 11 a sectional view of a detail taken on line llH of Fig.8,j

Fig. 12 a sectional view of a detail taken on line l2--l2 of Fig. 8,

(on. 28-39) V Fig. 13 a diagram of the wiring system for the electrical equipment of the warping plant, wherein the switches are shown in their normal position when the relays are deenergized,

Figs. 14 and 15 a diagrammatic illustration of various relative positions between the reed and a beam, and

Fig. 16 a, diagrammatic illustration of the movement of the reed during its adjustment from the first position into the second position as shown in Fig. 15.

Referring now to Fig. 1, 20 generally indicates a warper, 22 generally indicates a so-called storage device, 24 generally indicates a creel, and 26 generally indicates an A. C. to D. C. motor generator set. The storage device 22 is connected with the warper 20 by means of screws 28. The creel 24 is arranged at a suitable distance from the storage device. The A. C. to -D. C. motor generator set 26 is supplied with alternating current from an electrical source (not shown) through the line 30 and delivers the direct current to the various electrical equipments of the warping plant through multiple conductor cable 32.

During the normal operation of the warping plant, the warp yarns 34 travel from the bobbins 36 mounted in the creel through the space between a stationary gripping means 38 and a movable gripping means 40 of the storage device 22 and thence through a reed 42 to a beam 44 inserted into the warper 20 and driven by an electromotor 46.

The storage device 22 serves to unwind a portion of the warp 34 from the beam 44 in case of breakage of yarn by displacing the movable gripping means 40 from its inactive position shown in full lines into its active position 40' shown in dash and dot lines. Reference is had to my Patent #2302300 relating-to A storage device for a temporary unwinding of a portion of the warp from the beam on a warping or beaming machine issued on November 24, 1942, for a more detailed description of the construction and operation of the storage device 22.

Although Fig. 1 illustrates a preferred arrangement of a warping plant wherein the warper is used in combination with a storage device of a certain construction, the warper according to the present invention may be used without a storage device, if desired. Furthermore, if the warper is used in combination with a storage device, the latter may be of any suitable type.

As best shown in Figs. 2 and 4, the driving. elec tromotor 46 is mounted on the frame 48 ofthe' warper 20. The electromotor is directly'coupled with a driving means or driving head 50 keyed to the shaft 52 of the electromotor and held in its position by a nut 54, so that the driving head rotates at the same speed as the shaft of the electromotor.

A bracket 56 (see Figs. 1, 2, 4 and 5) is swingably mounted on a stationary rod 58 carried by supporting elements 60 and held in its position by set screws 62. The supporting elements 60 are slidably arranged on rods 64 carried by stationary parts of the frame of the warper. The supporting elements 60 may be held in any adjusted position by means of set screws 66 (see Fig. 4). For the purpose of balancing the weight of the bracket 56 and the parts connected therewith in the intermediate positions of the bracket between its operative upright position shown in Fig. 4 and its inoperative horizontal position shown in Fig. 5, two torsion springs 68 are wound around the rod 58, one end of each torsion spring being secured to the rod, the other end of each torsion spring being secured to the bracket. The bracket may be held in its upright position by means of a locking Screw I0 swingably mounted on a stationary extension I2, which may be engaged with a complementar locking member 14 on the bracket.

A bearing I6 arranged on the bracket 56 carries the shaft I8 of an idling head 80. The rotatable shaft I8 rests on rollers 82 of the bearing and is arranged with play in the bearing, 1, e, the shaft may also be shifted in the direction of its longitudinal axis. One side of a thrust ball bearing 84 mounted on a shiftable rod 86 extending through a hole in a cover plate 88 of the bearing I6 is in contact with the end of the shaft I8 of the idling head. A spring 90 arranged between the plate 88 and the other side of the ball bearing 84 tends to urge the latter against the end of the shaft I8. The idling head 80 and its shaft I8 may be shifted to a certain extent in the direction of the arrow A against the action of the spring 90. The movement of the rod 86, ball bearing 84, shaft I8 and idling head 80 in the opposite direction .under the action of the spring 90 is limited by a set collar 92 secured to the projecting end of the rod 86.

A gear 94 keyed to the shaft 18 of the idling head meshes with a pinion 96 keyed to the shaft of a shut off counter 98 mounted on top of the bearing I6. The shut off counter 98, which may be of any well known type, serves to cause an automatic stoppage of the warper as soon as the beam 44 has performed a predetermined number a: revolutions for which the shut ofl' counter has been set.

As :best shown in Figs. 3 and 4, a pair of adjustable rest bars I00 is arranged in the space below the space occupied by a beam 44. Each rest bar comprises two members I02 and I04, which are adjustable with respect to each other by means of a slot and screw connection I08. The rest bars I00 are-connected with rods I08 and I I0 at the ends thereof. The rod I08 is slidably and adjustably arranged in a bore of an arm II2 mounted on the frame of the warper. A set screw II4 serves to hold the rod I08 in the adjusted position. The rod H0 is slidably and adjustably arranged in a bore of an extension II6 of the adjustable supporting element 60 and is held in its position by a set screw II8. Thus, the rest bars I00 may be adjusted in a certain position with respect to a beam, 44 by means of the rods I08, H0 and set screws H4, H8, while the length of the rest bars may be adapted to the width of the beam used .by means of the slot and screw connection I06. Therefore, the warper may be used for beams of various sizes and shapes.

Fig. 4. indicates a beam 44 of usual form in dash and dot lines. The beam has flanges I20 and I22 at the endsof its hollow core I24, and the center hole I26 is provided with a longitudinal notch I28.

Now, the insertion of an empty beam 44 into the warper shall be described: For this purpose the supporting elements carrying the bracket 56 and the rods 0 of the rest bars I00 are brought into a predetermined position in accordance with the width of the beam to be inserted. Of course, if the supporting elements 60 are already in the proper position, a. special adjustment thereof becomes superfluous. The bracket 56 is swung into the horizontal position shown in Fig. 5, whereupon the empty beam maybe easily placed into the warper by sliding the flange I20 along the rest bars, until one end of the center hole I26 comes into engagement with the driving head 50. The conical shape of the driving head 50 facilitates the engagement and causes a slight lifting of the flange I20 away from the rest bars I00. During the engagement of the driving head 50 with the center hole I26 of the beam, a key I30 arranged on the driving head is brought into engagement with the longitudinal notch I28 to establish a positive drive of the beam. Now, the bracket 56 is swung into its upright position shown in Fig. 4, so that the idling head 80 comes into engagement with the other end of the center hole I26. The idling head is also of conical shape, so that the flange I22 of the beam is slightly lifted away from the rest bars I 00 to secure a free rotation of the beam. During the engagement of the idling head 80 with the center hole of the beam, the idling head may be shifted to a certain extent in the direction of the arrow A (Fig. 4) against the action of the spring 90, if the position of the supporting element 60 does not exactly correspond to the width of the beam inserted. In other words, the above described play of the idling head 80 and its shaft 18 allows for slight differences in the width of the beams of a certain standard size. After l0ck ing the bracket 56 in its upright position by means of the screw I0, the operation of the warper ma be started.

In Order to remove a full beam from the warper after the termination of the warping operation, the bracket 55 is swung into the horizontal position shown in Fig. 5, whereby the idling head 80 is disengaged from the center hole of the beam and the flange I22 of the beam drops onto the rest bars I00. Now, the operator has free access to the flange I22 and may easily remove the beam from the warper by sliding its flange I20 along the rest bars I00. 7

According to Figs. 1, 2 and 3, a pressure roll I32 of a width somewhat smaller than the distance between the flanges I20 and I 22 of the beam 44 rests against the winding I34 on the beam. As best shown in Fig. 6, the pressure roll I32, which is selected in accordance w'th the 7 standard size of the beam to be inserted into the warper, is exchangeably journalled in roller bearings I35 and I38 carried by arms I40 and I42 mounted on a rod I44 rotatably and shiftably arranged in bearings I46 and I 48 of the frame of the warper. The longitudinal axis of the rod I44 is substantially parallel to the longitudinal axis of the beam 44. The arm I40 is fixed to the rod I 44 in any suitable manner, while the arm I 42 isslidably and adjustably arranged on the rod I44, so that the distance between the arm I40 and the arm I42 may be adjusted in accordance with the width of the pressure roll I32 selected. The arm I42 is held in its position by means of a set screw I50. One end of the rod I 44 projects from the frame of the warper and has a groove I52 for engagement with an adjusting plate I54 mounted on the frame by means of a cap screw I56 and a thumb screw I58. The adjusting plate I54 resting against springs I60 and I62 wound around the shafts of said screws serves to hold the rod I44 in a predetermined position. The position of the adjusting plate and the shiftable rod I44 carrying the assembly of the arms I40, I42 and pressure roll I 32 may be varied to a certain extent by means of the thumb screw I58, so that the pressure roll may be brought into proper registering position with the beam. In other words, the described adjustment of the rod I44 carrying the pressure roll I32 by the adjusting means I54, I58 allows for slight differences in the width of beams of a certain standard size.

The pressure roll I32 is pressed against the winding I34 on the beam by means of a we ght I64 carried by an arm I66 secured to the rod I44.

A combined speedometer and odometer I68 (Figs. 1 and 6) mounted on the arm I42 serves to indicate the circumferential speed of the pressure roll I32 and the winding I34 and the length of the warp wound on the beam 44.

As best shown in Figs. 1, 2, 3, 6 and,7, a crank I keyed to the rod I44 is pivotally connected with one end of an actuating member I12. The other end of the actuating member carries a roller I14, which is in engagement with a cam I16 secured to a slidable carriage I18 by screws I80 (see also Figs. 8 and 12). A set screw I82 (Figs. 6 and 7) arranged on the actuating member I12 cooperates with an abutment I84 on the crank I10 and determines the angle between the member I12 and the crank I10 as long as the pressure roll I32 contacts the winding I34 on the beam. A tension spring I86 stretched between hooks of the crank I10 and actuating member I12 tends to bring the set screw I82 into engagement with the abutment I84 and to hold the roller I14 of the member I12 in cooperative engagement with the sliding cam surface I16.

As best shown in Figs. 3, 8 and 12, the carriage I18 has a groove I88 on each side thereof for engagement with four guide rollers I90 mounted 'on a member I92 secured to the frame of the warper, so that the carriage may be moved through the distance c=a+b (see Fig. 3) by means of the controlling mechanism I10, I12, I14, I16, when the swingable support I40, I42, I44 carrying the pressure roll i32iis moved through the angle 'y=a+fi during the building up of the winding I34 on the beam 44.

According to Figs. 8, 11 andv 12, the carriage I18 has a channel I94 for receiving the main portion of a T-shaped holder I86 carrying the reed 42 of divergent shape in a manner to be described hereinafter. The holder I96 is slidably arranged in the channel I94 for an adjustment of the reed 42 in vertical directiom by means of an adjusting screw I88. Said adjusting screw passing through the hole of a lug 200 of the holder I86 and having a

set collar

202, 204 on each side of the lug is screwed into the threaded hole of a member 206 secured to the carriage I18 by screws 308. A plate 2 I0 mounted on the carriage by screws 2I2 serves to clamp the holder I96 a ainst the base of the channel I 94.

As best shown in Figs. 8 and 10, the frame of the divergent reed 42, the width of which increases from its lower portion toward its upper portion, is inserted into a recess of a support 2I4 and is held in its position by screws 2| 6. The support 2I4 is connected with the head of the holder I86 by means of two slot and screw connections 2I8, 220 for an adjustment of the reed 42 in horizontal direction by means of an adjusting screw 222. Said adjusting screw passin through the hole of a lug 224 of the support 2I4 and having a set collar 226, 228 on each side of the lug is screwed into the threaded hole of an extension 230 of the head of the holder I86. Springs 232 wound around the shafts of the screws 220 and arranged between the holder I86 and the nut cause a certain friction to secure the position of the support 2 and the reed 42 with respect to the holder.

Furthermore, a, bracket 234 is mounted on the slidable carriage I18 by means of screws 236 as best shown in Figs. 3, 8 and 11. Said bracket 234 has a recess 238 for receiving a holder 240 secured to the bracket by means of a, screw 242. A member 244 carrying a bar or table 246 is slidably arranged on the holder 240 and is held in its normal inactive position by means of a stop screw 248 which is screwed into the holder 240 and forms an abutment for an extension 250 of the member 244. After the termination of the warping operation the member 244 and table 246 may be shifted into an upper active positio 244', 246 as shown in dash and dot lines in Fig. 3 to bring the yarns of the warp 34 into a straight plane and facilitate the pasting of a strip onto the warp before the yarns are severed. A spring trigger 252 arranged on the member 244 is automatically engaged with a notch 254 on the holder 240 to hold the member 244 and the table 246 in the upper active position. A stop screw 256 arranged on the holder 240 limits the upward movement of the member 244 to prevent an undesired disengagement of the member 244 from the holder 240.

As best shown in Figs. 1, 3 and 8, two rods 235 and 231 of glass or any other suitable material for guiding the warp 34 are also mounted on the carriage I18. For this purpose two vertical supporting bars 239 carrying a member 24I having on each side thereof a horizontal supporting rod 243 secured thereto are secured to the bracket 234 mounted on the slidable carriage I18. .Arms 245 carrying the guiding rod 235 and arms 241 carrying the guiding rod 231 are rotatably and adjustably mounted on said supporting rods 243. The

arms

245 and 241 are held in their pcsitio by set screws or the like.

Moreover, a rheostat 258 mounted on a stationary part of the warper and electrically connected with the field of the electromotor 46 by lines 260 is controlled by the slidable carriage I18 as best shown in Figs. 2, 3, '1, 8 and 12. For this purpose, a rack 262 meshing with a pinion 264 keyed to the shaft 266 of the rheostat 258 is secured to the carriage I18 by screws 268. Thus, an upward movement of the carriage I18 by the controlling mechanism I19, I12, I14, I16 owing to a movement of the swingable support I40, I42 and the pressure roll I32 through an angle 7 during the building up of the winding on the beam causes a rotation of the shaft of the rheostat 258, so that the operating speed of the shaft of the electromotor 46 and the beam 44 directly coupled therewith is automatically changed from a predetermined normal value to a lower value in order to obtain a substantially constant travelling speed of the warp yarns resulting in a substantially constant tension in the warp yarns as the diameter of the winding I 34 increases.

Assume, at the start of a warping operation .the adjustable divergent reed 42 is set in such a way, that the warp 34 (indicated by dash and dot lines in Fig. 8) passes between the points d and e of the reed. During the building up of the winding I34 on the beam the diameter of the winding is increased, so that the warp is lifted from a lower level into a higher level, for example, from the position 34' into the position 34" as shown in Fig. 7. At the same time, the swingable support I40, I42 carrying the pressure roll I32 is moved through the angle so that the carriage I18 supporting the reed 42 is lifted by means of the controlling mechanism I19, I12, I14, I16 through the distance (see Fig. 3). Preferably, the members of the controlling mechanism are arranged and shaped in such a way, that the lifting of the reed corresponds to the lifting of the warp and the latter always passes between the two points d and e of .the reed.

Obviously, the guiding rods 235, 231 and the table 246 connected with the carriage I 18 are lifted simultaneously with the reed 42.

If, after the start of the warping operation, the operator should find out, that the yarns of the warp are not uniformly distributed over the width of the beam inserted into the warper, the desired uniform distribution of the yarns may easily be obtained by a slight re-adjustment of the reed 42 in vertical and/or horizontal direction by the adjusting means I98, 202 and/or 222, 228.

When the warping operation is terminated and the warper is arrested in a manner to be described hereinafter, the pressure roll is in the position I32" indicated by dash and dot lines in Figs. 1 and '7. According to Fig. 7, the pressure roll then is still between the flanges of the beam 44. In order to render possible the removal of the full beam in the direction of its longitudinal axis as described above, the pressure roll should be further swung by hand into the position shown in full lines in Fig. 7. For this purpose, a handle 210 is arranged on the arm I42 (see Figs. 1 and 6). During this manual swingingof the pressure roll from the position I 32" (Fig. 7) in clockwise direction, a further lifting of the reed 42 and the table 246 is undesired, as the warp remains in the same level. Therefore, adjustable means are provided for rendering inoperative the controlling mechanism I10, I12, I14, I16 when, after the termination of the warping operation, the pressure roll I32 is moved away from the winding on the beam. As best shown in Figs. 2, 3 and 8, an adjustable set screw 212 is arranged on the member I92 for cooperation with an abutment 214 secured to the slidable carriage I18. The adjustable set screw 212 may be set in such a Way, that the abutment 214 contacts the set screw substantially simultaneously with the stoppage of the warper, when, for example, the pressure roll and the members of the controlling mechanism are in the position shown in dash and dot lines in Fig. 7, i. e. the pressure roll is in the position I32". Now, when the pressure roll is moved away from the winding on the beam and the pressure roll and the crank I are swung into the position shown in full lines in Fig. '1, the carriage I18 and the cam I16 mounted-thereon are arrested by the set screw 212, so' that the actuating member I12 is swung about the pivot between said member and the crank I10 against the action of the spring I86, while the roller I14 of the member I12 slides along the surface of the cam I16. Thus, the controlling mechanism I10, I12, I14, I16 is rendered inactive, and the swinging of the pressure roll away from the winding on the beam does not cause a further lifting of the reed and the table. If it is desired to produce a winding of a diameter smaller than that shown in Fig. '1, the position of the set screw 212 is changed in such a way, that the abutment 214 contacts the screw 212 after a short stroke. Thus, the stopping means 212, 214 may be adjusted for windings of various diameters.

In order to hold the pressure roll I32 in the extreme position shown in Fig. 7 against the action of the weight I64 and the spring I86 during the exchange of a beam, the following automatic locking mechanism is arranged. According to Figs. 3 and 6, a locking rod 216 carrying two set

collars

218 and 280 is shiftably arranged in

stationary bearings

282 and 284. A spring 286 arranged between the bearing 284 and the set 001- lar 280 tends to urge the set colla 218 against the bearing 282, so that the end 288 of the rod 216 extends into the path of a cam 290 arranged on the crank I10 keyed to the shaft I 44. The other end of the spring loaded locking rod 216 projecting from the frame of the warper carries a knob 292 secured thereto. During the warping operation of the device, the locking rod 216 is in a level above the ,cam 290. When, at the end of the warping operation, the crank I10 and cam 290 reach the position shown in dash and dot lines in Fig. 7, the locking rod 216 is still above the cam 290. Now, when the pressure roll I32 is moved away from the beam and the crank is swung into the position shown in full lines in Fig. 7, the inclined surface of the cam 290 contacts the locking rod 216 and displaces same against the action of the spring 286, whereupon, after disengagement of the inclined surface of the cam from the locking rod, the spring 266 returns the locking rod into its normal position now below the cam 290, so that the locking rod 216 comes into engagement-with the straight locking surface 294 of the cam 290 and holds the pressure roll I 32 in its extreme position. In order to release the pressure roll after the exchange of a beam, the locking rod 216 is pulled out against the action of the spring 286 by gripping the knob 292. Then, the pressure roll may be returned into its starting position, whereupon the locking rod 216 may be released, so that the latter is automatically returned by the spring 286 into the position above the cam 290 as shown in Fig. 6.

The warper shown in the drawings has a first brake associated with the drive and a second brake associated with the pressure roll, and means are provided for causing a substantially simultaneous application of said two brakes when the warper is arrested.

According to Figs. 2, 3 and 4 a portion of the drive head 50 keyed to the shaft 52 of the electromotor 46 is in the form of a brake drum 294. One end of a brake band 296 embracing said drum is secured to a stationary element 298, the other end of said brake band is secured to an arm 300 of a double armed lever 302 pivoted to the element 298 at 304. A tension spring 306 stretched between the other arm 308 of the double armed lever 302 and an extension 3I0 of the stationary element 288 tends to turn the double armed lever 302 in counter-clockwise direction as viewed in Fig. 3 to hold the brake in released condition.

causes a movement of the lever 302 in clockwise direction for an application of the

brake

294, 296. According to Figs. 3 and 4, a ring 320 of leather or. any other suitable material is mounted on the surface of the brake drum 294 facing the flange I20 of the beam. When a beam is inserted into a warper, the flange I20 is pressed against said ring 320, so that the ring assists in the driving of the beam by friction. As best shown in Figs. 3 and 6, a brake drum 322 is secured to a hub 324 of the exchangeable pressure roll I32. When the pressure roll is inserted into the bearings on the supporting arms I40, I42, a brake band 326 may be placed around the drum 322. One end of said brake band 326 is connected with a lug 328 on the arm I 40, the other end of said brake band is connected with one end of a compensating means or tension spring 330 having its other end connected with a crank 322 keyed to a shaft 334 journalled in a bearing 336 of the arm I40. A tension spring 338 stretched between a pin 340 arranged on the arm I and an arm 342 keyed to the shaft 334 tends to move the crank 332 in clockwise direction as viewed in Fig. 3 to hold the brake in released condition.

The

first brake

294, 296 associated with the drive of the warper and the second brake 322, 326

associated with the pressure roll are coupled with each other by means of a Bowden wire 344. One end 346 of said Bowden wire is secured to the arm 308 of the double armed lever 302, while the other end 348 of the Bowden wire is connected with the arm 342. Thus, an energization of the solenoid 3I8 causes an application of the

first brake

294, 296 and, substantially at the same time, an application of the second brake 322, 326 through the medium of the Bowden wire and the tension spring 330 compensating for difierences in the brakes. On the other hand, a deenergization of the solenoid 3I8 permits a movement of the lever 302 in counter-clockwise direction by the spring 306 for an automatic release of the. two brakes. Of course, any other coupling between the two brakes and any other compensating means arranged between the two brakes could be used, if

desired. 7

As pointed out above, the rheostat 258 serves to cause an automatic reduction of the operating speed of the driving electromotor 46 from a predetermined normal degree to a lower degree, so that a substantially constant travelling speed of the warp yarns resulting in a substantially constant tension in the yarns is obtained during the operation of the warper. The normal travelling speed of the warp yarn is determined by said predetermined normal operating speed of the electromotor at the start of the warping operation. Different yarns of different size and/or material require different travelling speeds to obtain the proper tension in the yarns. Therefore, an additional electrical adjusting means or a hand rheostat 350 (see Figs. land 2) is arranged on the warper for the adjustment of said predetermined normal operating speed of the driving electromotor 46.

It has been found thata wide speed range of the electromotor 46 directly coupled with the drive 50 of the beam may be obtained by using a D. C. electromotor and connecting the hand rheostat 350 with the source of direct current in such a way, that the rheostat 350 controls the voltage of the direct current supplied to the electromotor of the warper.

Referring now to Fig. 13 illustrating the wiring system of the electrical equipment of the warping plant, a more detailed description thereof may be found in my Patent 2,324,611 relating to An electrical control system for a warping or beaming plant issued on July 20, 1943, the A. C. motor 352 of the A. C. to D. C. motor generator set 26 is .supplied with alternating current from an electrical source (not shown) through the lines 30 upon a closing of the hand switch 354. The generator 356 of the A. C. to D. C. motor generator set 26 produces the direct current. The terminal 358 of the generator 356 is connected with the terminal 360 of the electromotor 46 of the warper through the line 362 including the electromagnet 364 of the motor field relay 366. The terminal 368 of the generator 356 is connected with the terminal 310 of the electromotor 46 through the line 312 including the pole M1 or the triple-pole main switch M controlled by the trip coil magnet 314, the solenoid 316 of an overload circuit breaker 318 and the field 380 of the electromotor 46.

As will be apparent from the foregoing, the electromotor 46 of the warper is started, as soon as the pole M1 of the main switch M is closed upon an energization of the trip coil magnet 314. Said trip coil magnetmay be excited by pushing down a start push button 382, which is normally held in its open position by the action of a spring (not shown) and is arranged in the following motor start circuit: A line 384 leads from the right hand terminal of the start push button switch to the left hand terminal of the overload circuit breaker 318, the right hand terminal of which is connected with the trip coil magnet 314 by the line 386. A line 388 leads from the trip coil magnet 314 to the movable finger 390 of the automatic motor field rheostat 258 controlled by the controlling mechanism I19, I12, I14, I16 as described above. The coil 392 of the automatic rheostat 258 is connected with one end of the field 394 of the electromotor 46 through a line 396. The other end of the field 394 is connected with the left hand terminal of the start push button switch 382 through a line 398. Current is supplied to this motor start circuit from the exciter 456 of the A. C. to D. C. motor generator set 26 by means of a line 452 connecting the terminal 454 with a junction point 448 in the line 388 and by means of

lines

462 and 418 connecting the terminal 458 with a junction point 416 in the line 398.

When the trip coil magnet 314 is excited by closing above described circuit by means of the spring loaded start push button 382, the pole M2 of the main switch M is closed, whereby a holding circuit for the trip coil magnet of the main switch is closed as will be described hereinafter, so that the main switch remains in closed position upon a subsequent release of the spring loaded'start push button. The holding circuit may be traced as follows starting from the left hand terminal of the start push button switch 382. The line 398, the field 394, the line 396, the rheostat 258, the line 388, the trip coil magnet 314, the line 386, the bridge of the overload circuit breaker 318, and the line 400 connecting the left hand treminal of the circuit breaker 318 with the left hand terminal of the start push button switch 382, said line 400 including the pole M: of the main switch M, the switch 402 of a counter stop relay 404, the switch 406 of a warp brake relay 408, the electromagnet of a time relay M2, and a stop push button switch 414 normally held in closed position by a spring (not shown).

The main switch M is opened and the supply or direct current to the electromotor 48 is interrupted at the pole Ml, as soon as the above described holding circuit of the trip coil magnet 314 is interrupted either at the stop push button switch 4 or at the switch 406 of the warp brake relay 408 or at the switch 402 of the counter stop relay 404. The opening of the stop push button switch 4 takes place when the warper is arrested by hand, the opening or the switch 406 takes place when one or more control needles 6 in the creel drop and close a control circuit owing to a breakage of yarnas more fully described in my Patent #2,324,611 issued on July 20, 1943, and the opening of the switch 402 takes place when the normally closed switch 8 of the shut ofl counter 98 is opened after the performance of a predetermined number of revolutions oi the beam as more fully described in the sam Patent ii-2,324,611.

Any of above mentioned interruptions of the holding circuit of the trip coil magnet 314 causes an energization of the brake solenoid 3l8.for an immediate application of the brakes of the warper as will be described hereinafter. The solenoid M0 is arranged in the following circuit: A line 420 branched off at the point 422 from a first line of the A. C. supply line leads to the switch 424 of the time relay 2 and thence to one end of the solenoid 3I8. The other end of the solenoid 3l8 is connected with the junction point 426 in a second line of the A. C. supply line through a line 428 including theswitch 430 of a solenoid brake relay 432. 'An adjustable choke coil 433 is arranged in parallel to the switch 424by means of a line 421 branched ofi the line 420. The electromagnet 434 controlling the switch 430 of the solenoid brake relay 432 is arranged in the following circuit: A line 436 leading from the electromagnet 434 to the junction point 438, the line 388 from said junction point 438 to the trip coil magnet 314, the portion of the line 386 leading from the trip coil magnet 314 to the junction point 440, and the line 442 connecting said junction point 440 with the electromagnet 434. Thus, as soon as the holding circuit of the trip coil magnet 314 is interrupted at the stop push button switch 4 or the switch 406 or the switch 402, the described circuit including the electromagnet 434 is also interrupted, so that the electromagnet 434 is deenergized and the switch 430 is closed. At the same time the electromagnet 4| 0 of the time relay 4l2 arranged in the holding circuit of the trip coil magnet 314 is also deenergized. Owing to the delaying action of the time relay 2. however, the switch 424 remains for a. short period, for example 2 sec., in the closed position 424 shown in dash lines, so that the circuit of the brake solenoid 3l8 is closed and the latter causes a strong application of the brakes of the warper as soon as the electromagnet 434 of the solenoid brake relay 432 is deenergized and the switch 430 is closed. After said short period of 2 sec., for example, however, the

switch 424 of the deenergized time relay 4| 2 comes into the open position shown in full lines,

so that now the adjustable choke coil 433 is included in the circuit of the brake solenoid 3|8,

whereby the energization of the brake solenoid M8 is automatically reduced to a predetermined degree for causing only a slight application of the brakes oi the warper. Thus, after a 'short period of a strong application 01 the brakes for causing an immediate stoppage of the beam, a

slight application of the brakes prevails as long 10 as the motor 46. is arrested. As soon as the motor 46 is restarted, the electromagnet 434 arranged in parallel to the trip coil magnet 314 is excited, so that the switch 430:is opened and the brake solenoid 3l8 is deenergized for an immediate release of the brakes of the warper. The

above described slight application of the brakes of the warper during the standstill of the motor 46 may be adjusted by the choke coil 433 to such a degree that it permits an unwinding of a portion of the winding on the beam by the storage device 22 but prevents an undesired continuation of the rotation of the beam as soon as the storage device has been stopped for the termination of the unwinding operation.

If desired, however, the line 42l and the adjustable choke coil 433 may be omitted. Under these circumstances the solenoid 318 would be deenergized as soon as the switch 424 of the time relay 2 comes into the open position, i. e. the

brakes of the warper would be released after a short period of application corresponding to the delaying action of the time relay.

The hand rheostat 350 for'adjusting a predetermined normal operating speed of the electro- 85 motor 46 by controlling the voltage of the direct current supplied to the electromotor is arranged in the following circuit: A line 444 leads from the end 445 of the coil 446 of the generator field rheostat 350 to the pole M: of the main switch 40 M, which in turn is connected with the junction point 448-in theline 388 by a line 450. A

line 452 leads from said junction point 448 to the terminal 454 of the exciter 6 of the A. C.

to D. C. motor generator set 26. The terminal 45 458 of the exciter 456 is connected with one end of the field 4-60 of the D. C. generator 356 by a line 462. The other end of the field 460 is connected with the movable finger 464 of the hand rheostat 350 through a line 466 including the switch 468 of the relay 408. The end 441 of the coil 448 of the hand rheostat 350 is connected with the junction point 410 in the line 462 through a line 412 leading to the junction point 414, through the portion of the line 396 connecting the junction point 414 with a junction point 416, and through a line 418 connecting the junction point 416 with the junction point 410. As will be apparent from the described connections, the generator field 460 is energized by the exciter 456, which generates a 0 constant potential. This potential is applied to a circuit consisting of the left hand portion (as viewed in Fig. 13) of the generator field hand rheostat 350 in parallel with the generator field 460 and the right hand portion of the generator field hand rheostat 350 in series with these. A movement of the finger 464 across the hand rheotat 350 will cause a variation of the potential applied to the generator field 4'60 and, consequently, a variation of the current flowing through this generator field during the normal operation of the war-per. If, for example, the finger 464 is moved to the right, the energization of the generator field and the current flowing through said generator field are increased. Therefore, the current flowing through the generator field is in proportion to the setting of the finger 464 of the hand rheostat 356. This current, whemhigh, gives a high voltage generated by the generator- 356, when low a low voltage generated. The normal operating speed of the electromotor 46 at the start of the warping operation is determined by the voltage of the direct current supplied to the electromotor, and, therefore, the normal operating speed of the electromotor may be easily adjusted by means of the hand rheostat. The automatic rheostat 258 arranged in series with the field 3940f the electromotor 46 serves to reduce the speed of the electromotor from said normal value to a lower value, so as to obtain a substantially constant tension in the yarns and/or constant speed of the yarns respectively during the warping operation as pointed out above.

Under certain circumstances, a very low speed or a so-called inching speed of the electromotor 46 is desirable. For example, first, after the occurrence of a yarn breakage in the creel and the tying of the ends of the broken yarn without the use of the storage device, or, second, after the occurrence of a yarn breakage at a point between the creel and the beam and the tying of the broken ends of the yarn subsequent to-the unwinding of a portion of the warp from the beam by means of the storage device. In the first instance the warp should be drawn from the creel at a very low speed, until the slack in the yarn has been taken up, and in the second instance the warp folded in the storage device should be taken up by the beam at a very low speed during the return of the gripping means 46 by the reversible motor 486 from its lower active position into its upper inactive position, until the warp is released by the storage device.

As more fully described in my Patents 2,324,611 issued on July 20, 1943 and #2,302,'700 issued on November 24, 1942 the electromagnet 482 of the relay 468 is excited in both instances mentioned above, so that the switch 466 is opened and the hand rheostat 356 is disconnected from the generator field 466. According to Fig. 13 an adjustable inching resistor 484 is arranged between the junction points 486 and 488, so that, after the described disconnection of the hand rheostat 356 from the generator field 466, the current now flows through the following circuit: exciter 456, line 462, generator field 466, line 466, inchin resistor 484, line 444, pole M3, lines 456, 452. Therefore, under these circumstances a current proportional to the combined resistance of the generator field 466 and the inching resistor 484 arranged in series with each other will pass through the generator field, setting up a fiux which will produce the low voltage required for the low inching speed and the l-ow torque of the electromotor 46. It may be mentioned, that this flux, and therefore voltage and torque, are independent of the setting of the hand rheostat 356, as the latter is disconnected from the generator field 466. On the other hand, the hand rheostat 356 is reconnected with the generator field 466 and a further operation of the electromotor 46 at inching speed is rendered impossible as soon as the electromagnet 482 of the relay 466 is deenergized so that the switch 468 is closed. In the first instance the electromagnet 482 is deenergized, as soon as the control circuit including the control needles 4| 6 in the creel is interrupted after the slack in the previousl tied yarn has been taken up. In the second instance the electromagnet 482 is deenergized, as soon as the inching speed switch 496 controlled by an element 49I- arranged on the movable gripping means 46 of the storage device is opened when, after the use of the storage device, the gripping means has been returned into its upper inactive position. Furthermore, for a full understanding of the operation of the electromotor 46 at inching speed in the second. instance, the following arrangements are mentionedz-An auxiliary start switch 492 controlled by an element 493 and a control switch 494 controlled by an element 495 mounted on the movable gripping mean 46 of the storage device are arranged in series in a circuit including the main switch M for starting the electromotor; the control element 493 of the auxiliarystart switch 492 of the electromotor 46 is mechanically coupled with the reversing switch 496 for the reversible motor 486 ofthe storage device in such a way, that it causes a closing of the auxiliary start switch 492 when the reversing switch is set for an upward movement of the gripping means 46 by the reversible motor.

In view of the foregoing, in the first instance, i. e. in case of a breakage of yarn in the creel, an inching speed of the electromotor 46 is obtained by pressing and holding the spring loaded start push button 882; as soon as the slack in the previously tied yarn has been taken up and the control circuit including the control needles 4 l 6 is interrupted, the electromagnet 482 of the relay 468 is deenergized and the switch 468 is closed, whereby the hand rheostat 356 is reconnected with the generator field 466, so that the speed of the electromotor 46 rises to its set value and the electromotor continues its operation at the high operating speed. In the second instance, i. e. in case of the use of the storage device, the electromotor 46 operates at inching speed, as soon as the reversing switch 496 mechanically coupled with the control element 493 of the auxiliary start switch 492 is set for upward movement of the gripping means 46, until the circuit including the main switch M is broken at the control switch 494 during the upward movement of the gripping means; the electromotor 46 may be restarted at its operating speed by pressing the start push button 382, as soon as, after the return of the gripping means into its upper inactive position, the inching speed switch 496 has been opened, whereby the electromagnet 462 of the-relay 468 has been deenergized and the switch 468 has been closed toreconnect the hand rheostat 356 with the generator field 466.

As will be apparent from the description of the warper, the warper has the following features: The bracket 56 carrying the idling head 86 is adjustably mounted on the rods 64 so as to permit the insertion of beams of various widths, the pressure roll I32 is exchangeable so as to permit the selection of a pressure roll capable of cooperation with a beam of predetermined width, and the divergent reed 42 is adjustable in horizontal and vertical direction. Therefore, the warper may be used for winding yarn in various gauges, i. e. number of yarns per inch, on beams of various widths as will be explained hereinafter in connection with Figs. 14-16.

If, for example, the warper has been used previously for warping yarn in a gauge of 30 yarns per inch on a beam of a width of 10", and if, during the next warping operation, the warper shall be used for warping yarn in the same gauge of 36 yarns per inch on a smaller beam of a width of 8", the following steps are carried out: Assume, during the previous warping of the yarn on the 10"-beam, .the beam 44, the bracket 56 with the idling head 80. and the reed 42 are in the position shown in full lines in Fig. 14, and a warp of 300 yarns passes between the points and a of the reed. Now, the bracket with the idling head is brought into the dash and dot line position 56', 80, so as to permit the insertion of an 8"-beam 44'; the motor 46 and the driving head 50 coupled therewith remain in their position. A pressure roll capable of cooperation with an 8"- beam is substituted for the pressure roll used previously. Th reed 42 remains in its position. 60 yarns are taken away from the warp, so that a warp of 240 yarns only passes between the points I and m of the reed 42, said points being spaced from each other at a distance of 8". Therefore, the beam of a width of 8 receive 240 yarns per 8", or, in other words, the yarns are wound on the 8"-beam in the same gauge of 30 yarns per inch, as they have been wound previously on the l"-beam.

If, for example, the warper has been used previously for warping yarn in a gauge of 30 yarns per inch on a beam of 'a width of 10", and if, during the next warping operation, the warper shall be used for warping yarn in a different gauge of 25 yarns per inch on a beam of the same width of 10", the following steps are carried out: Assume, during the previous warping of the yarn on the 10"-beam, the beam 44, the bracket 56 with theidling head 80, and the reed 42 are in the position shown in full lines in Fig. 15, and a warp of 300 yarns passes between the points I and g of the reed. Now, the bracket with the idling head remains in its position relative to the rod 64 so as to permit the insertion of another 10"- beam. The pressure roll is not exchanged. The

reed 42, however, is brought into the position 42' as shown in dash and dot lines in Fig. 15, so that the point h takes the place of the point ,f and the point i takes the place of the point g. Furthermore, 50 yarns are taken away from the warp in the space between the points i and 7c, so that a warp of 250 yarns passes between the points 11. and i of the reed in the position 42', said points being spaced from each other at a distance of 10". Therefore, the beam of a width of 10" receives 250 yarns per 10", or, in other words, now the yarns are wound on the 10" beam in a gauge of 25 yarns per inch. In order to move the reed from the full-line position 42 into the dash and dot line position 42', preferably at first the reed is shifted in a vertical direction Y (see Fig. 16) so that it comes into .the intermediate position 42" as shown in dash lines, whereupon the reed is moved from said intermediate position 42" into the new position 42', in a horizontal direction Z. Of course, the horizontal and vertical adjustment of the reed could be reversed or carried out simultaneously, if desired.

Although preferably the individual objects of the invention are applied to a warping plant in the combination described, the individual objects of the invention may be applied individually or in partial combination to warping or beaming machines It is emphasized that the merits of the invention are not limited to the described and illustrated combination, but the individual objects of the invention per se also have inventive merits. Without stating that all the individual objects of the invention are enumerated, it may be mentioned that, for example, the direct coupling between the driving electromotor and the driving means of the beam could be arranged in a warper, which is not equipped with means permitting the insertion of the beam in the direction of its longitudinal axis, or that the means for adjusting the warper to the size of the beam to be inserted could be arranged in a warper which has no direct coupling between its drive and the driving means of the beam, or that the controlling means for lifting the reed in accordance with the increase of the diameter of the winding on the beam could be arranged ina warper wherein the automatic controlling means for reducing the speed of the drive are separated from said controlling means for lifting the reed, etc.

I have described a preferred embodiment of my invention, but it is clear that numerous changes and omissions may be made. without departing from the spirit of my invention.

What I claim is:

1. A warping or beaming machine for winding warp on a beam. comprising: a drive including a driving shaft, coupling means connected with said driving shaft and arranged for driving engagement with said beam so as to rotate same in dependence on the speed of the driving shaft, automatic controlling means associated with said driving shaft for reducing the speed thereof during the building up of the winding on the beam, and a movable member arranged for contacting engagement with the winding on the beam, said movable member being associated with said automatic controlling means for actuating same for a reduction of the speed of the driving shaft in dependence on the building up of the winding on the beam.

2. A warping or beaming machine for winding warp on a beam, comprising: a drive including a driving shaft, coupling means connected with said driving shaft and arranged for driving engagement with said beam for rotating the beam in dependence on the speed of the driving shaft, automatic controlling means for reducing the speed of said driving shaft during the. building up of the winding on the beam, a pressure roll, and a loaded swingable support carrying said pressure roll for urging same against the winding on the beam, said loaded swingable support being associated with said automatic controlling means for actuating same for a reduction of the speed of the driving shaft in dependence on the building up of the winding on the beam.

3. A warping or beaming machine for winding warp on a beam, comprising: an electromotor for driving said beam, automatic electrical controlling means in circuit with said electromotor for reducing the speed thereof during the building up of the winding on the beam, and a movable member arranged for contacting engagement with the winding on the beam, said movable member being associated with said automatic controlling means for actuating same for a reduction of the speed of the electromotor in dependence on the building up of the winding on the beam.

4. A warping or beaming machine comprising: an electromotor with a driving shaft, driving means for rotating a warp beam, said driving means being coupled with said driving shaft for rotating the warp beam at a, speed depending on the speed of the driving shaft, automatic electrical controlling means in circuit with said electromotor for reducing the speed of said driving shaft in dependence on the building up of the winding on the warp beam, a pressure roll, and a loaded swingable support carryingsaid pressure roll for urging same against the winding on the warp beam, said loaded swingable support being associated with said automatic electrical controlling means for actuating same for a reduction of the speed of the driving shaft during the building up of the winding on the warp beam.

5. A warping or beaming machine for winding warp on a beam, comprising: an electromotor for driving said beam, automatic electrical controlling means in circuit with said electromotor for reducing the speed thereof during the building up of the winding on the beam, said automatic electrical controlling means including a rheostat electrically connected with the field of the electromotor, a pressure roll, and a loaded swingable support carrying said pressure roll for urging same against the winding on the beam, said loaded swingable support being associated with 7 said rheostat of the automatic electrical controlling means for actuating same for a reduction of the speed of the electromotor in dependence on the building up of the winding on the beam.

6. A warping or beaming machine for winding warp on a beam, comprising: a D. C. electromotor including a driving shaft, said D. C. electromotor being arranged for electrical connection with a source of direct current, electrical adjusting means in circuit with said D. C. electromotor for controlling the voltage of the direct current supplied to the D. C. electromotor, and coupling means connected with said driving shaft and arranged for driving engagement with said beam, said coupling means being constructed for rotating the beam at the same speed as the driving shaft of the D. C. electromotor.

'7. A warping or beaming machine for winding warp on a beam, comprising: an electromotor including a driving shaft, coupling means connected with said driving shaftand arranged for driving engagement with said beam, said coupling means being constructed for rotating the beam at the same speed as the driving shaft of the electromotor, automatic electrical controlling means in circuit with said electromotor for reducing the speed thereof during the building up of the winding on the beam, and a movable member arranged for contacting engagement with the winding on the beam, said movable member being associated with said automatic controlling means for actuating same for a reduction of the speed of the electromotor in dependence on the building up of the winding on the beam.

8. A warping or beaming machine for winding warp on a beam, comprising: a drive including a driving shaft, coupling means connected with said driving shaft and arranged for driving engagement with said beam so as to rotate same in dependence on the speed of the driving shaft, automatic controlling means associated with said driving shaft for reducing the speed thereof during the building up of the winding on the beam, a pressure roll, and a loaded swingable support carrying said pressure roll for urging same against the winding on the beam, said loaded swingable support being associated with said automatic controlling means for actuating same for a reduction of the speed of the driving shaft in dependence on the building up of the winding on the beam, and said support being adjustable in a direction parallel to the longitudinal axis of the beam.

9. A warping or beaming machine for winding warp on a beam, comprising: a drive including a driving shaft, coupling means connected with said driving shaft and arranged for driving engagement with said beam so as to rotate same in dependence on the speed of the driving shaft, automatic controlling means associated with said driving shaft for reducing the speed thereof during the building up of the winding on the beam 9. pressure roll, and a loaded swingable support carrying said pressure roll for urging same against the winding on the beam, said loaded swingable support being associated with said automatic controlling means for actuating same for a reduction of the speed of the driving shaft in dependence on the building up of the winding on the beam, and said pressure roll being exchangeably mounted on said support.

10. A warping or beaming machine comprising: a drive for rotating a warp beam, a pressure roll, and a, loaded swingable support carrying said pressure roll for urging same against the winding on the warp beam, said support being adjustable in a direction parallel to the longitudinal axis of the warp beam.

11. A warping or beaming machine comprising: an electromotor for rotating a warp beam. automatic electrical controlling means in circuit with said electromotor for reducing the speed thereof during the warping or beaming operation, a pressure roll, a loaded swingable support carrying said pressure roll for urging same against the winding on the warp beam, and a reed movably arranged in the machine, said loaded swingable support being associated with said automatic electrical controlling means and with said reed for actuating said controlling means for a reduction of the speed of the electromotor and for lifting said reed during the building up of the winding on the beam.

12. A warping or beaming machine for winding warp on a beam, comprising: an electromotor for driving said beam, electrical adjusting means in circuit with said electromotor for adjusting a predetermined normal operating speed of the electromotor, and automrtic electrical controlling means in circuit with said electromotor for reducing the speed of said electromotor from said normal operating speed to a lower speed in dependence on the building up of the winding on the beam, said electrical adjusting means and said automatic controlling means being independent from each other.

13. A warping or beaming machine for winding warp on a beam, comprising: a D. C. electromotor for driving said beam, said D. C. electromotor being arranged for electrical connection with a source of direct current, electrical adjusting means in circuit with said D. C. electromotor for controlling the voltage of the direct current supplied to the D. C. electromotor for an adjustment of a predetermined normal operating speed of the D. C. electromotor, and automatic electrical controlling means in circuit with said D. C. electromotor for reducing the speed of said D. C. electromotor from said normal operating speed to a lower speed in dependence on the building up of the winding on the beam, said automatic electrical controlling means including a rheostat electrically connected with the field of the D. C. electromotor.

14. A warping or beaming machine for winding warp on a beam, comprising: an electromotor for driving said beam, electrical adjusting means in circuit with said electromotor for adjusting a predetermined normal operating speed of the electromotor, automatic electrical controlling means in circuit with said electromotor for reducing the speed of said electromotor from said normal operating speed to a lower speed in dependence on the building up of the winding on the beam, and a movable member arranged for contacting engagement with the winding on the beam, said movable member being associated with said automatic controlling means for actuating same for a reduction of the speed of the electromotor in dependence on the building up of the winding on the beam.

15; A warping or beaming machine for winding warp on a beam, comprising: a D. C. electromotor for driving said beam, said D. C. electromotor being arranged for electrical connection with a source of direct current, electrical adjusting means in circuit with said D. C. electromotor for controlling the voltage of the direct current supplied to the D. C. electromotor for an adjustment of a predetermined normal operating speed of the D. C. electromotor, automatic electrical controlling means in circuit with said D. C. electromotor for reducing the speed of said D. C. electromotor from said normal operating speed to a lower speed in dependence on the building up oi the winding on the beam, said automatic electrical controlling means including a rheostat electrically connected with the field of the D. C. electromotor, and a movable member arranged for contacting engagement with the winding on the beam, said movable member being associated with said rheostat of the automatic electrical controlling means for actuating same for a reduction of the speed of the D. C. electromotor in dependence on the building up of the winding on the beam.

16. A warping or beaming machine for winding warp on a beam, comprising: an electromotor for driving said beam, automatic electrical controlling means in circuit with saidelectromotor for reducing the speed thereof during the building up of the winding on the beam, and electrical inching speed controlling means in circuit with said electromotor for adjusting an operation of the electromotor at inching speed.

1'7. A warping or beaming machine for winding warp on a beam, comprising: an electromotor for driving said beam, electrical adjusting means in circuit with said electromotor for adjusting a predetermined normal operating speed of the electromotor, automatic electrical controlling means in circuit with said electromotor for reducing the speed or said electromotor from said normal operating speed to a lower speed in dependence on the building'up of the winding on the beam, and electrical inching speed controlling means in circuit with said electromotor for adjusting an operation ,of the electromotor at inching speed.

- FRITZ LAMBACH.