US737865A - Loom for cross-weaving. - Google Patents

Description

No. 737,865. PATENTED SEPT. 1, 1903.

1. E, PALMER. LOOM FOR (moss WBAVING.

APPLIUATION FILED DEG. I 1902.

K0 MODEL. 3 SHEETS-SHEET 1.

'gwym No. 737,865. PATENTED SEPT. 1, 1903.

I. B. PALMER. LOOM FOR GROSS WEAVING.

APPLICATION FILED no.1, 1902. N0 MODEL. s sums-sum z.

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PATENTED SEPT. 1, 1903..

I. E, PALMER. LOOM FOR (moss WEAVING.

APPLIUATION FILED DBO. I 1902.

3 SHEETS-SHEET 3.

K0 MODEL.

1W UM UNlTED STATES Patented September 1, 1903.

PATENT OFFICE. i

LOOM FOR CROSS-WEAVING.

SPECIFICATION forming part of Letters Patent No. 737,865, dated September 1, 1903. Application filed December 1, 1902. Serial No. 183,447. (No model.)

To all whom it may concern.-

Beit known that I, ISAAC E. PALMER, a citizen of the United States, and a resident of Middletown, in the county of Middlesex and State of Connecticut, have invented new and useful Improvements in Looms for Cross- We'aving, of which the following is a specification.

My invention relates to certain improvements in looms for cross-weaving in which two heddles are provided having their tops connected over common pulleys and their bottoms connected to two oppositely-movable tappets, one of the said heddles being movable laterally with respect to the other heddle, so as to produce a plain or gauze weave as the heddles are reciprocated vertically.

A further object is to provide a loom in which the movements of the tappets are controlled by a new form of cam, so as to impart to the said tappets an up-and-down movement for one revolution of the shaft or two up'and down movements for one revolution of the shaft, as may be desired.

A further object is to provide certain improvements in the construction, form, and arrangement of the'several parts whereby the heddles may be operated with a small amount of power as compared with the power required when the heddles are moved in one direction by the use of retracting-springs.

A practical embodiment of my invention is represented in the accompanying drawings, in which Figure 1 is a vertical section. taken from front to rear through a loom embodying my invention. Fig. 2 is a detail view showing the tappets, the means for controlling the movements of the same, and the means for controlling the movements of the divided cam, the cam-leaves being shown in full lines at the limit of their movement in one direction and in dotted lines at the limit of their movement in the opposite direction. Fig. 3 is a vertical longitudinal central section through the earn, a portion of its shaft being represented in connection therewith and also one half of the cam-shifting casing. Fig. t is a detail View of a portion of the cam-shifting casing, showing the switch in the reverse position from that shown in Fig. 3, the shoe carried by the shifting member of the cam being shown with the said figure.

about to enter the switch. Fig. 5 is a face view of the cam-controlling casing, a portion of the same being broken away to more clearly show the position of the switch therein. Fig. 6 is a side View of the movable member of the cam, one position of the fixed member of the cam being shown in dotted lines in connection Fig. 7 is a face view of the same, a portion of the end of the movable member of the cam being broken away to more clearly show the grooves for locking the movable and fixed members of the cam to rotate together. Fig. 8 is a side view of the fixed member of the cam, a portion of one end being broken away; and Fig. 9 is a face view of the same.

The loom in which I have embodied my present improvements is constructed in part in accordance with my Patent No. 642,361, dated January 30, 1900, and entitled Looms for cross-weaving.

The loom comprises a suitable frame 1, in which a main heddle 2 and an auxiliary heddle 3 are fitted to reciprocate vertically. The tops of these heddles are connected over common pulleys 4 by flexible connections 5, so as to cause them to alternately reciprocate vertically. The bottoms of the heddles 2 and 3 are connected to the free ends of tappets 6 and 7, respectively, which tappets are hinged to a common cross-bar 8, carried by the frame. These tappets may be provided with the usual cam- engaging rollers 9 and 10.

The structure whichI have shown for moving the auxiliary heddle 3 laterally for forming either a plain or gauze weave as the two heddles are reciprocated is quite similar to the mechanism shown, in my Patent No. 642,361, above referred to, and consists generally of the following parts: The main heddie 2 is fitted to reciprocate vertically upon vertical guide-rods 11, one only of which is shown herein. An auxiliary guide-rod 12 is provided for each end of the auxiliary heddle 3, which guide-rod is fixed to rock with the main guide-rod 11 by means of upper and lower brackets 13 and 14. An arm 15 is also fixed to the main guide-rod 11 and is engaged with the free end of a horizontally-swinging lever 16, which lever is operated by a cam 17, fixed to the cam-shaft 18 and shown in dot ted lines in Fig. 1.

The cam which I employ for alternately raising and lowering the heddles once for one revolution of the cam-shaft or twice for one revolution of the cam-shaft is constructed, arranged, and operated as follows: The fixed member of the cam comprises a hollow sleeve or collar 19, fixed to rotate with the cam-shaft 18 by means of set-screws 20. This sleeve or collar 19 is provided with a single-leaf cam 21, arranged in position to always engage the roller 9 of the tappet 6, connected to the main heddle 2 as the cam-shaft is rotated. The fixed member of the cam is further provided with two wedge-shaped feathers 22, extending longitudinally along the periphery of the sleeve or collar 19 from one face of the single leaf 21, which feathers are fitted to enter cor- .responding grooves in the movable member of the cam to be immediately described. The movable member of the cam comprises a hollow cylinder 23, fitted to reciprocate upon the periphery of the sleeve or collar 19 of the fixed member of the cam. This cylinder is provided with two longitudinal grooves 24, arranged to receive the feathers 22 of the fixed member of the cam, whereby the movable member is fixed to rotate with the camshaft and at the same time is permitted a laterallysliding movement thereon. This cylinder 23 is provided with a single-leaf cam 25, projecting in the opposite direction from the singleleaf cam 21 of the fixed cam member when the parts are assembled. This cylinder 23 is further provided with a double-leaf cam 26, which is arranged at right angles to the single-leaf cams of the movable and fixed cam member.

To permit the parts to be readily assembled, the cylinder 23 of the movable cam member is transversely divided into two parts through the single-leaf cam 25, which parts are firmly secured together over the fixed cam member, preferably by securing the adjacent faces of the single-leaf cam together by a bolt 27. When the movable member of the cam is at the limit of its lateral movement in one direction, the single-leaf cam 25 will be located in the plane of the roller 9 of the tappet 6 and the double-leaf cam 26 will be in the plane of the roller 10 of the tappet 7. When the cam is in this position, the heddles will be reciprocated twice to every revolution of the cam-shaft 18. When the movable member of the cam is shifted to the limit of its movement in the other direction, as shown in dotted lines in Fig. 2, the single-leaf cam 25 of the movable member will be brought into the plane of the roller 10 of the tappet 7 and the double-leaf cam 26 will be shifted out of the plane of both of the rollers. In this position the single leaf 21 of the fixed member of the cam will still be in the plane of the roller 9 of the tappet 6 and the heddles will be reciprocated once to every revolution of the cam-shaft.

The means which I employ for controlling the shifting of the movable member of the cam is constructed, arranged, and operated as follows: A stationary hollow cylindrical casing 28 29 embraces the cam-shaft l8 and is supported by clamping its two half-sections to a sleeve or bushing 30, which in turn is secured to a rail 31 of the loom-frame. This casing is arranged in proximity to the cam and overlaps the adjacent end of the cylinder 23 of the movable member of the cam. This casing is provided with two internal annular grooves 32 33, within one or the other of which is fitted to travel a shoe 34, carried by the cylinder 23. In the present instance a post 35 is screwed into the periphery of the cylinder 23 and is provided at its outer end with the shoe 34, which shoe is free to rock laterally in the end of the said post. A double cross-switch 36 is fitted to slide in the casing 28 29, which switch is provided with intersecting cross-grooves 37 38 for alternately connecting the groove 33 with the a groove 32 or the groove 32 with the groove 33, according to the way in which it is desired to shift the shoe 34, carried by the movable member of the cam. This switch 36 is so constructed that when at the limit of its move ment in one direction a perfectly clear groove 32 is formed entirely around the interior of the casing and when shifted in the opposite direction a complete groove is formed entirely around within the said casing. The movement of this switch 36 is controlled by a chain 39, the spools 40 of which engage one arm 41 of a rocking leverpivoted at 42 to the loom-frame, the other arm 43 of the said lever being connected to the switch 36 by a bar 44. An eXpansion-spring-45 is engaged with the bar 44 for holding the arm 41 of the rocking lever in engagement with the controllingchain 39 and for yieldlngly holding the switch 36 in the position shown in Fig. 3. When the switch is in its normal position, the two members of the cam are so arranged that the roller 9 of the tappet 6 is engaged by the single- -leaf cams 21 25 of the fixed and movable members, while the roller 10 of the tappet 7 is engaged by the double-leaf cam 26 of the movable member. This arrangement. will produce two reciprocations of the heddles to one revolution of the cam-shaft and will cause the loom to produce a gauze weave.

The spools 40 upon the chain 39 control the relation of the fixed and movable members of the cam for producing a plain weave as follows: When one of the spools 4O raises the arm 41. of the rocking lever, the switch 36 is shifted into the position shown in Fig. 4, thus causing the shoe 34, carried by the movable member, to travel along the crossgroove 37 in the switch over into the annu lar groove 33 in the casing. This movement will shift the single leaf 25 of the movable cam into the plane of the roller 10 of the tappet 7 and at'the same time shift the double-leaf cam 26 of the movable member out of the plane of the said roller 10, as the single-leaf cam 21 is still left in the plane of ICO the roller 9 of the tappet 6. The heddles will be reciprocated once to every revolution of the cam-shaft 18. In other words, the heddles will be held open while the auxiliary heddle is shifted over and back before the heddles are closed. This movement will produce the plain weave. The moment that the arm 41 of the rocking lever is permitted to fall by the passing of the spool 40 the switch 36 will be returned to its position (shown in Fig. 3) by the spring 45, so that as the shoe 34 of the movable cam member reaches the switch it will enter the cross-groove 38 and be directed over into the interior of the annular groove 32. It is to be understood that the cam should be so arranged with respect to the position of the shoe 34 that the switch can be operated before the shoe 34 reaches the said switch.

It will be seen that by the construction hereinabove set forth I am enabled to reciprocate the heddles vertically without depend-' ing upon a spring to move the heddles in one direction, as shown in my patent above referred to. At the same time by the use of the shifting-cam I am enabled to produce the plain and gauze weaves at pleasure.

What I claim is 1. In a loom, two heddles, flexible connections secured to the heddles, common pulleys for the flexible connections to cause the heddles to alternately reciprocate vertically, a tappet connected to each of the heddles, a cam-shaft and a cam thereon comprising a fixed member arranged to engage one of the tappets and a movable member arranged to engage one or both of the tappets for controlling the vertical reciprocations of the heddles.

2. In a loom, heddles, means for reciprocatingone of the heddles laterally with respect to the other, a cam for controlling the vertical reciprocations of the heddles, comprising a fixed member and a movable member and a switch-casing for operating the movable member of the cam.

3. In a loom, heddles, a cam for controlling the vertical reciprocations of the heddles, comprising a fixed member and a movable member, a casing having annular-grooves therein within which the movable member is fitted to travel and a switch for shifting the movable member from its engagement with one groove to the other groove.

4. In a loom, heddles, a cam for controlling the vertical reciprocations of the heddles comprising a fixed member and a movable member and means for shifting the movable member of the cam comprising a casing having interior annular grooves therein and a double cross-switch arranged to shift the movable member from its engagement with one groove into engagement with the other groove.

5. In a loom, heddles, tappets connected to the heddles and a cam for controlling the movements of the tappets, comprising a fixed member having a single leaf located permanently in the plane of one tappet and a movable cam member having a double leaf arranged to be brought into and out of the plane of the other tappet and a single leaf arranged to be brought into the plane of the one or the other of the tappets.

6. In a loom, heddles, a cam for controlling the vertical reciprocations of the heddles comprising a fixed member and a movable member, a casing, a switch within the casing for shifting the movable member of the cam and a chain for controlling the movements of the switch.

7. In a loom, heddles, and a cam for controlling the movement of the heddles comprising a fixed member having a single camleaf and a movable member having a single cam-leaf and double cam-leaves projecting therefrom.

8. In a loom, a cam-shaft, a cam thereon comprising a fixed member and a movable member, a casing having interior annular grooves, a shoe carried by the movable member and arranged to travel along in one or the other of said grooves in the casing and a switch for shifting the shoe.

9. In a loom, heddles, and a cam for controlling the movements of the heddles comprising a fixed member and a movable member having a tongue-and-groove connection therewith, said movable member comprising two sections secured together.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 21st day of November, A. D. 1902.

' ISAAC E. PALMER. Witnesses:

PAUL S. CARRIER, CHARLES M. SAUER.

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