US1326262A - Stop-motion for looms - Google Patents

Description

c. F. HELDERMAN.

STOP MOTION FOR LOOMS.

APPLICATION FILED SEPT. 26, 1919.

13262620 v Patented Dec. 30,1919.

2 SHEETS-SHEET I.

C. F. HELDERMAN. STOP MOTION FOR Looms. APPLICATION FILED SEPT. 26? I919.

Patented Dec. 30,1919.

2 SHEETSSHEET 2 (lilac n STATES are t T Fl Go 'GHARLES'F. HELDERMAN, 0F LEAKSVILLE, NORTH CAROLINA, ASSIGNOR OF ONE- THIRD T0 ROYAL J. MOORE AND ONE-THIRD TO D. FRANK KING, JR, BOTH OF LEAKSVILLE, NORTH CAROLINA.

sror Mo'rIoN r03 LOOMS.

Specification of Letters Patent. Patented Dec, 30, 19119.

Application filed September 26, 1919. Serial No. 326,469.

To all whom it may concern:

Be it known that 1, CHARLES F. HELDER- MAN, a citizen of the United States, residing at Leaksville, in the county of Rockingham -and State of North Carolina, have invented form its accustomed function, thereby preventing injury to the pattern cards and the waste of material by the loom continuing to operate without functioning properly.

The drawings illustrate a preferred embodiment of the invention. However, it.is .to be understood that in adapting the same to meet diflerent conditions, various changes in the form, proportion, and minor details of construction may be resorted to without departing from the nature of the invention asclaimed hereinafter.

Referring to the drawings hereto attached.

Figure 1 is a diagrammatic view of a jacquard machine of ordinary construction illustrating the application of the invention.

Fig. 2 is a fragmentary view showing more clearly the stop motion, whereby the loom is automatically thrown out of action when the jacquard mechanism becomes disarra-nged.

Fig, 3 is a detail View of a portion of a stop mechanism.

. Fig. 4 is a sectional detail of a portion of the jacquard cylinder and needle board, showing the parts on an enlarged scale.

Fig. 5 is a detail view of a portion of the needle board, showing the yoke, whereby the needles of the stop motion are connected.

Fig. 6 is a detail view of a portion of the jacquard cylinder, showing the peg by means of a belt yieldably mounted thereon for cooperation wlth the pattern cards and needle" board.

Fig. 7 is a sectional detail on the line 77 of Fig. 6 looking to the left, as indicated by thearrow.

Corresponding and like parts are referred to in the following description and ndicated in the several views of the drawings by like reference characters,

The invention is adapted for looms of the jacquard type or provided with jacquard mechanism. The frame of the loom is indicated generally at 1 and 2 is the main shaft to which the driver power is adapted to be applied in any well known manner I pulley 3. A clutch 4: 1s spllned to the shaft 2 and is adapted to connect the belt pulley 3 with the main shaft 2. 'The clutch 4 is adapted to be operatedjby means of a shipper lever 5 which is plvotally supported intermediate of its ends and adapted to be controlled by means of a hand lever 6. A rod 7 projects laterally from the frame 1 and supports an expansible helical spring 8 which normally exerts an inward pressureon the end of the lever 5. Toggle links 9 are interposed between the free end of the shipper lever 5 and a collar 10 secured to the inner end of the rod 7 A link 11 connects the toggle links 9 with the lower end of the operating lever 6. When the toggle links 9 are in alinement, as indicated most clearly in Fig.

3 the clutch member 4 is moved into clutched.

engagement with the pulley 3-andconnects said pulley with the main shaft 2. When the toggle links 9 are moved outward away from the rod 7 at their inner jointed ends the shipper lever 5 is actuated by the spring 8 to throw the clutch 4 clear of the drive pulley 3 with the result that the loom is thrown out of action. means may be provided for breaking the joint of the toggle links 9, the mechanism illustrated is preferred because of the extreme simplicity thereof. A rod 12 is provided at itslower end with a wedge 13 which is adapted to operate between the rod 7 and the jointed ends of the toggle links 9. Under normal conditions, the

wedge-shaped end 13 of the rod 12 is disposed below the rod 7 and toggle links 9,

\Vhile any suitable as indicated most clearly in Figs. 1 and 2. Should the jacquard mechanism become disarranged, the rod l2 is elevated to cause its wedge-shaped end 13 to come between the rod 7 and jointed ends of the toggle links 9, thereby breaking the joint of the latter so as the spring 8 comes into play to operate the shipper lever 5 and throw the loom out of action. It should be borne in mind that the lever 6, when operated throws the loom into action by causing the toggle links 9 to aline, as indicated in Fig. 3, but when the rod 12 is moved upward, the toggle links 9 break joint outwardly, thereby permitting the spring 8 or equivalent means to come into play to automatlcally throw the loom out of action.

The jacquard mechanism comprises the usual griif or lifter bars 14 and hooks or lifters 15 and needles 16 in coiiperative relation therewith to effect lateral movement of the upper hooked ends of the lifters 14 with reference to the grill bars. Certain needles, as 16* are adapted'to be actuated by each pattern card in succession, so as to throw the hooks or lifters 15 controlled thereby out of the path of the cooperating griff bars, thereby preventing operation of the hooks 15 so long as the jacquard mechanism is in normal'working position. However, should the jacquard mechanism from any cause become disarranged, the needles 16 will not be operated and as a consequence, the hooks 15 will be lifted by the coacting gliff bars and efiect a stopping of the loom by throwing the same out of action. Strands. or like connections 17 connect the lower ends of the hooks 15 with an arm 18 of a rock shaft 19, said rock shaft being provided with an arm 20 to which the rod 12 is connected. When the rock shaft 19 is actuated by the jacquard mechanism, the loom is automatically thrown out of action by the upward movement of the rod 12 in the manner herein stated.

The jacquard cylinder is indicated at 21 and its faces or sides correspond with the cards 22 ofthe pattern chain. The pattern chains are supported by the usual rack 23 and the cards are laced or connected in any preferred way, so as to formthe usual pattern chain which cooperates with the cylinders 21 and needles 16. The needle board or uide 24 is provided at or near each end wit an opening 25 in which is loosely fitted a plate or disk 26 constituting a yoke, whereby the needles 16 are connected. The yoke 26 may be of any construction and is free to move in the opening 25 and the needles 16 may be connected thereto in any manner, so as to move therewith. Under normal conditions, that is, when the jacquard mechanism is working properly, the hooked ends of the lifters 15 occupy a position to be engagedby the coacting grid bars 14, but are moved laterally out of the path of the cooperating griff bars by means of a. peg 27 carried by the jacquard cylinder 21. Asshown most clearly in Fig. 4, the projecting end of the peg 27 is adapted to pass through an open ing in the pattern card in register with the opening 25, so as to press upon the yoke 26 and move the needles 16 to effect a lateral movement of the hooked ends of the lifters 15 to throw said ends out of the path of the coacting grifi' bars. Should the pattern vchain become disarranged from any cause,

Each of the cylinders 21 is of polygonal form and each side or face corresponds with a pattern card and is provided with pegs 27.

to register with openings in the pattern card under normal conditions, that is, when the jacquard mechanism is working properly. Each peg 27 is yieldably mounted so as to be pressed inward when not registering with the opening in the pattern card. Under normal conditions, the peg 27 projects and passes through the opening of the pattern card and into the opening 25 of the needle board 24 and engages the yoke 26, thereby operating the needles 16 and the lifters 15*. Each peg 27 has a shank 28 which is mounted in a bracket 29 of a plate 30 let into a mortise formed in the face 'of the cylinder. The plate 80 is adjustable to admit of properly setting the pegs and allow for variations in workmanship. As shown most clearly in Figs. 6 and 7, the plate 30 is formed with a longitudinal slot 31 through which passes a fastening 32, by eans of which the plate is secured to the cylinder in the adjusted position.

For single machines the cylinder 21 will be provided near each end with a peg 17, it being understood that each face or side of the cylinder will be supplied with two pegs, each being located at or near the end of the cylinder. Double acting machines will have each face of the jacquard cylinder provided with four pegs, two being located at or near the ends and two intermediate of the ends. So long as the jacquard mechanism is working properly, the lifters 15 will be moved laterally to clear the cooperating grifi bars at each successive card of the pattern chain. However, should the lacing or connecting means between pattern cards break or the pattern cards become disarranged from any cause, the opening therein provided to register with the pegs 27 failing to register therewith, said pegs will be thrown out of operative position by being pressed inward and thereby failing to operate the needles 16 the loom will be thrown out of operation in the manner herein fully described. However, should there be an absence of a pattern card from any cause, or the pattern chain .be omitted, the stop mechanism will not be brought into play, and the loom when in motion will continue in operation since the pegs 27 will engage the yoke and operate the needles 16 and the lifters 15.

Having thus fullydescribed my invention, what- I claim as new and desire to secure by Letters Patent is 1. In pattern mechanism for looms of the jacquard type, a lifter, a stop mechanism adapted to be actuated by the lifter, a "grifi' bar in cooperative relation with the lifter, a needle in cooperative relation with the litter and means carried by the jacquard cylinder, and operative through the cards of the pattern chain to actuate the needle under normal conditions to throw the lifter out of the path of the coacting grifi bar.

2. Stop mechanism for Jacquard looms, 'comprisinga lifter having connection with the loom to automatically throw the same out ofaction under abnormal conditions, a grill bar in cooperative relation with the lifter, a needle coacting with said lifter, and a pegiyieldably'mounted on the jacquard cylinder and adapted to operate-through a card of the pattern chain and actuate the said needle to throw the lifter out of the path of the coacting grifi bar when the jacquard mechanism is Working properly.

3. In stop mechanism 'for Jacquard looms,

alifter having connection with the starting mechanism'of the loom a grill bar in cooperative relation with the litter, an element loosely mounted in the needle board and having the said needle connected therewith 'and a peg yieldably mounted on the jacquard cylinder and operable through a card of the pattern chain to actuate said yoke under normal conditions to throw the lifters outof the path of the cooperating grifi' bars.

In testimony whereof I' aflix my signature in presence of two witnesses.

CHARLES F. HELDERMAN.

Witnesses: v Y

' G. C. GAMMoN, T. M. N.

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