US1075712A - Warp-replenishing machine. - Google Patents

Description

E. F. HATHAWAY & G. LEA. WARP BEPLBNISHING MACHINE. AIPLIOATION FILED 001. so, 1911.

Patented Oct. 14, 1913.

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WARP BBPLENISHING MACHINE.

APPLICATION FILED 0G'1.30, 1911.

Patented Oct. 14, 1913.

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@FITED @TATFE FAZFQNT EDGAR F. I-IATI-ZAWAY AND CHARLES LEA, OF BOSTON, MASSACHUSETTS, ASSIGNOBS TO AMERICAN WAR-P DRAWING MACHINE COMPANY, A CGR-PORATION OF MAINE.

WARP-REPLENISHING MACHINE.

Specification of Letters Patent.

Patented Get. 1% 1913.

Application filed. October 30, 1911. Serial No. 657,629.

To all whom it may concern:

Be it known that we, EDGAR F. Hart-1A- war and CHARLES LEA, both citizens of the United States, and residents of Boston, county of Suffolk, Commonwealth of Massachusetts, (whose post-o-i'fice addresses are 195 Freeport street, Dorchester, Massachusetts,) have invented an Improvement in Var-plieplenishing Machines, of which the following description, in connection with the accompanying drawings, is a specification,

' like characters on the drawings representing like parts.

This invention relates to warp replenishing machines, being more particularly intended to provide certain improvements in themechanisms and construction of such machines.

While the same may have application to other forms of warp replenishing machines, for illustrative purposes we have shown the invention as embodied in a warp drawing machine.

The invention will be best understood by reference to the following description when taken in connection with the accompanying illustration of one specific embodiment thereof, while its scope will be more particularly pointed out in the appended claims.

In the drawings: Figure 1 is a cross sectional elevation partly broken away showing the principal elements of a well known type of warp drawing machine; Fig. 2 shows a detail in front elevation of the adjustable reed support; Fig. 3 is a detail in elevation partly in section showing the separator shaft brace; and Fig. 1 is a side elevation partly in section of the brace shown in Fig. 3.

Referring to the drawings and to the embodiment of the invention by which we have illustrated the same, the latter is shown applied to a well-known type of drawing-in machine of the same general construction as that shown in U. S. Patents Nos. 775,861, to Field; 871,860 to Field et aL; 862/17t to Hathaway, and 980,086 to Field at al. Such machine is herein shown for the sake of illustration, it being obvious that the several features of the invention herein described may be usefully employed in connection with warp drawing and other machines of widely difierent construction.

In the illustrated form of machine, as is well known to those skilled in the art, the

reed 1, harnesses 2 and warp threads 3, together with the drop wires, if the latter are used, are supported in a suitable framework in a generally parallel arrangement lengthwise the machine, while a needle or other suitable thread-placing device carried by the traveling carriage 5 is caused to advance along the fixed bed 6 of the machine and traverse the extent of the reed and harnesses, placing successive warp threads through the desired heddle eyes and the selected reed dents, these being appropriately positioned for that purpose in the needle path by suitable selecting and positioning mechanisms.

In the disclosed type of machine the selecting and positioning mechanisms provided comprise rotary members carried by rods or shafts extending also parallel with the loom elements lengthwise the machine, such shafts being driven by suitable pattern or timing devices and being journaled upon and carried by supporting parts which move with the traversing needle carriage 5 relatively to the loom elements as the drawingin operation progresses. Herein the harness selecting and positioning devices are embodied in the form of selecting worms 7 of the same 'eneral type as are disclosed in the patent toField No. 600,670, and the warp thread selecting device is embodied in the form of a worm or screw 8 (see Fig. 3). These are carried on and turned by separator shafts shown in end view in Fig. 1, the separator shaft 9 for the thread-separating worm 8 being partly shown in side elevation in Fig. 3.

It sometimes happens that the separator shaft tends to deflect or bend either because of its own weight or because of lateral pres sure thereagainst. For example, as shown in Fig. 1, the warp threads 3 pass through a friction clamp 10 which holds them fixed, thence about the separator shaft 9 and thence to a second friction clamp 11 wherein the threads are yieldably held for wit idrawal therefrom when seized by the needle. The threads being drawn or stretched under more or less tension about the separator shaft, such tension may be suliicient to bend or deflect the latter and interfere with its effective separating action.

To avoid the deflection of the thread separator shaft 9, or of any other of the separator shafts under like conditions, we have provided bracing means which serves to resist such deflection and sustains the shaft in substantially its intended alinement. Such bracing means can be applied to the shaft at some point intermediate its supported ends, means being preferably provided which automatically move the brace out of the way of the warp worm 8 when the latter on its traverse reaches the brace, so as to permit the unimpeded action of the warp worm upon the warp threads.

Referring to the drawings, and particularly to Figs. 3 and 4, the brace member herein comprises the head or rest 12, preferably of felt, fiber or other nonmetallic material, carried in a U-shaped bracket 13, the latter having the central projecting lug 14 by which it is pivoted between the ears 15 attached to the end of the tubular stem 16. The parts 12 and 13 constituting the rest are provided with a longitudinal rounded groove in which the shaft 9 is adapted to seat. The stem 16 is slidably mounted in the sleeve 17 the latter provided with an end head 18 which has a swiveled connection at 19 (see Fig. 1) with a bracket fixed to approximately the mid-portion of the lower warp clamp 10. The sleeve can thus be swung about its swivel connection to the bracket in a vertical plane. A set screw 20 in the sleeve 17 has an end projecting through a longitudinal slot 21 in the stem 16, so that the latter is guided for a limited sliding movement in and out of the said sleeve.

To hold the rest in position against the shaft there is secured to the lug 14 a finger or detent 22 which projects back through the interior of the stem 16. The inclined end 23 of the detent is adapted to swing out through an opening in the side of the stem to engage wit-h the end of a threaded cap 24, which latter has threaded engagement with the end of the sleeve 17. When the rest is seated against the cylindrical 30rtion of the shaft 9 at substantially rlght angles with the stem 16, the detent occupies the full line position shown with the end 23 projecting out in opposition to the end of the cap 24. If, however, the rest is rocked or tipped about its pivot to the dotted line position shown, the end 23 of the detent or finger withdraws within the stem and is freed from the end of the cap.

In applying the brace member to the separator shaft, the warp having been installed in the machineunder the required tension, the brace member is swung up about the pivot 19, the rest applied to the shaft as represented in full lines in Fig. 3, and the shaft swung out from its deflected position until the end of the detent snaps out over the head of the sleeve 24. In this position the brace member will remain until its head is rocked to free the detent, whereupon the stem 16 will slip back of its own weight into the sleeve 17 and the brace member drop down out of the way.

To tip the detent the separator shaft 9 is provided with a tapered or enlarged portion 25. As the drawing-in operation progresses this enlarged port-ion 25 finally reaches the brace and as it passes over the same forces it from the full line position shown in Fig. 3 to the dotted line position therein shown, this resulting in freeing the detent and dropping the brace as described in advance of the arrival of the warp worm 8.

In employing the brace member it may be located in any desired position lengthwise the machine or two or more such brace memhere may be employed which will be disconnected in succession as the needle carriage advances. Ordinarily, however, when a single brace member is used, it may be located near the mid portion of the warp frame or holder. \Vhen the warp worm reaches this point and the brace member is disconnected, the warp will have been half drawn and the remaining tension of the undrawn warp may be so relatively small as to cause no undue deflection of the separator shaft.

The needle carriage 5 is traversed along the bed of the machine through the engagement between the threaded driving shaft 26 and the nut 27, the latter on the carriage, the mechanism for reciprocating the needle driving the carriage and turning and timing the separating devices, as well as the principal mechanisms of the machine, being more fully shown in the prior patents already referred to.

In connection with the described form of drawing-in machine we have also shown an improved form of reed adjusting device. Referring to Figs. 1 and 2 the reed 1 is suspended at its upper shaft by means of holders 28 carried each by a bracket mounted for sliding or rolling movement along the supporting bar 30. One of such holders only is shown in Fig. 1, but it will be understood that as many are utilized as may be found necessary to suspend the reed upon the bar 30.

vTo adjust the reed vertically as may be required the bar 30 is vertically slidable in bracket-s 31 carried by the machine frame and is provided at each end with rack teeth each set of which meshes with the teeth of a gear sector 33carried by the rock shaft 34, the latter being ournaled in brackets 35. The shaft 34 has fixed to one end thereof a collar 36 provided with an arm 37 which projects in front of the machine frame, such arm having a set screw 38. The weight of the reed carrier holds the set screw against the machine frame and the latter therefore determines the vertical position of the reed. By turning the set screw in one direction or the other the shaft 34: is turned and the reed carried thereby vertically adjusted. This provides a very simple but effective form of reed adjuster for the reed bar, effective as to both ends of the bar from the same end of the machine.

lVhile for purposes of illustration we have herein shown and described one form of the invention, it is to be understood that the same is not limited to details of construction or the relative arrangement of parts, but that extensive deviations may be made there from without departing from the spirit thereof.

Claims.

1. In a warp replenishing machine, the combination with a needle of a needle carriage movable on said machine, warp holding means across which said needle carriage travels, said warp holding means including Warp holding clamps, a separating shaft, and a separating device engaging said threads, said shaft moving with said needle carriage and subject to the tension of said threads, a bracing member for said shaft fixed relatively to the warp clamps, and means for automatically disengaging said brace member on the approach of said scpa rating device.

2. In a warp replenishing machine, the combination with a needle of a needle carriage movable on said machine, warp holding means across which said needle carriage travels, said warp holding means including warp holding clamps, a separating shaft and a separating device engaging said threads, said shaft moving with said needle carriage and subject to the tension of said threads, and a brace member for said shaft.

3. In a warp replenishing machine, the combination with means for holding a series of loom elements in general parallel arrangement, selecting devices, driving members for said selecting devices, extending in general parallel relationto said loom elements, a thread-placing device, means for causing a relative movement between the said threadplacing device and said loom elements, and bracing means for one of said driving members.

t. In a warp replenishing machine, the combination with means for holding a series of loom elements in general parallel arrangement, selecting devices, driving members for said selecting devices, extending in general parallel relation to said loom elements, a thread-placing device, means for causing a relative movement between the said thread-placing device and said loom elements, means for bracing a driving member against deflection, and means for auto matically disengaging said bracing means.

5. In a warp replenishing machine, the combination with a loom element selecting device, a driving shaft therefor, bracing &

means for said shaft, and means for. automatically disengaging said bracing means.

6. In a warp replenishing machine, the combination with means for holding a se ries of loom elements, a thread-placing device, means for causing relative movement between said loom elements and said threadplacing device, a loom element selecting device also movable with said thread-placing device relatively to said loom elements, a driving shaft therefor, and bracing means for the intermediate portion of said shaft.

7. In a warp replenishing machine, the combination with means for holding a series of loom elements, a thread-placing device, means for causing relative movement between said loom elements and said threadplacing device, a loom element selecting device also movable with said thread-placing device relatively to said loom elements, a driving shaft therefor, bracing means for the intermediate portion of said shaft, and means for automatically disengaging said bracing means on the approach of the selecting device theretoward.

8. In a warp replenishing machine a selector shaft brace comprising a grooved head, a stem to which the same is secured and a pivot-ed sleeve on which said stem is adjustable.

9. In a warp replenishing machine a brace for a selector shaft comprising a grooved head, a stem on which the same is pivoted, a detent movable with said head, a sleeve on which said stem is slidable and a detent rest carried by said sleeve.

10. In a warp replenishing machine a separator shaft brace comprising a sleeve, a stem slidable in said sleeve, a grooved head pivoted to said stem, a detent movable with said head within said stem and an adjustable member engaging said detent on said sleeve.

11. In a warp replenishing machine, a separator shaft brace comprising a brace head or rest to engage the shaft, a stem secured thereto, and a holder having a telescopic connection with said stem.

12. In a warp replenishing machine a separator shaft brace comprising a brace head or holder, means to hold the same distended, and means automatically to cause collapse of the holder.

13. In a warp drawing machine a reed holder comprising a vertical slidable bar having rack teeth, a gear segment engaging the same and means for turning said gear segment.

14. In a warp drawing machine, an adjustable reed holder comprising a vertically movable holding member presenting a plurality of sets of rack teeth, a gear member engaging each rack, a shaft for turning said gfliag members, and means for turning said s a t.

15. In a warp replenishing machine, the combination with a thread placing member of a traveling carriage for said member; a thread separator, a shaft for operating said separator, said shaft having bearing supports at opposite ends in said carriage, driving mechanism for the shaft supported by the carriage at the end opposite the separator; warp clamps for holding the warp threads Wrapped partially around said shaft and a support for said shaft intermediate its bearing supports on the carriage to oppose the deflection thereof under the draft of the threads.

1.6. In a warp replenishing machine, the combination with a thread placing member, a thread separator, a shaft for turning said separator, bearing supports for said shaft at opposite ends, driving mechanism for the shaft at one end thereof, warp clamps for holding the warp threads wrapped partially around said shaft, means for causing relative movement progressively between the warp clamps on the one hand and the thread-placing member, separator shaft bearing supports, and driving mechanism on the other hand, and a support for said shaft intermediate its bearing supports on the carriage to prevent the deflection thereof under the draft of the threads.

17. In a warp replenishing machine, the combination with a thread-placing member, a thread separator, a shaft for operating said thread separator, a warp support, means for causing relative movement between the warp support' on the one hand and the thread-placing member, thread separator and separator shaft on the other hand, the threads of the warp being wrapped partially around said separator shaft, and a support for said shaft fixed relatively to said warp support.

In testimony whereof, we have signed our names to this specification, in the presence of two subscribing witnesses.

EDGAR F. HATHAWAY. CHARLES LEA. \Vitnesses:

ROBERT H. KAMMLER, THOMAS B. BOOTH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, I

Washington, D. C.

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