US1563681A

US1563681A - brown

Info

Publication number: US1563681A
Authority: US
Publication date: 1925-12-01
Anticipated expiration: 1942-12-01

Description

1,563,681 C. D. BROWN 1 1925- Dec.

OOMS FOR L ING MECHANISM SHEDD t 1 ts-Shee s Shae I 1925 51. July Flled Bu iii a, H" v iiiiiim ATTORNEY Dec. 1, 1925.

C. D. BRQWN SHEDDING MECHANISM FOR LOCKS Filed July 31, 1925 3 Sheetw-Shee? 2 m M w W A TTORNE Y Dec 1, 1925- c. D. BROWN SHEDDING MECHANISM FOR LUOMS Filed July 31. 1925 5 sheets sheet 5 ATTORNEY Patented Dec. 1, 1925..

UNETEZH STATES CARL D. BROWN, OF IIOIPEDALE, 1. IASSAO'FU$ETTS, ASSEGNUR TO DRAPER CORPORA- TION, OF E'IOPEDALE, MASSACHUSETTS, .l.

CGBPORATZGN OF MAINE.

SHEDDING IiIEGI-IANISM FOB LOQIIIS.

Application filed July 31, 1925.

Z '0 all 10/107114 "my concern 7 Be it known that I, CARL D. BROWN, a citizen of the United States, and a resident of Hopedale, in the county of Worcester and State of hlassachusetts, have invented an Improvement in Shedding Mechanisms for Looms, 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 shedding mechanisms for looms. and more particularly to means for disconnecting the power from the shedding mechanism to permit hand operation of the shedding mechanism for finding the pick or to position the heddle frames for piecing up or other causes.

In accordance with the present invention, the heddle frames which control the warp threads during shedding are connected to jack levers preferably located at the side of the loom and pivotally mounted between their ends for operation by the jack lever operating cams also preferably located at the same side of the loom as the jack levers, such cams being actuated from a driving shaft, including a clutch, whereby the driving power may be disconnected from the cams to permit manual operation of the cams for finding the pick, or for other purposes, by means of manual manipulation through a reach shaft.

The present invention will best be understood from the following description and the accompanying drawings of one good form thereof.

In the drawings:

Fig. 1 is a perspective view of a loom con taining the present invention and with some of the parts broken away Fig. 2 is a front view of a loom, showing more particularly the features associated with the present invention;

Fig. 3 is an enlarged detail showing the weighted trip lever for operating the clutch;

Fig. 4 is an enlarged view showing the clutch and driving connections between the driving shaft and cams; and

Fig. 5 is an enlarged detail in side elevation of portions of the loom arch and the connection of the reach shaft with the manually operable means thereof.

The loom frame 1 may be of usual con- Scri'al No. 47,229.

struction and as shown the loom is of the automatically replenishing type wherein the hopper 2 is supplied with filling carriers 3 in order to supply the shuttle automaticallv with fresh filling at times. The transferrer l has connected thereto the dog 5 for transferring a fresh supply of filling to the shuttie. but the details of such mechanism are not herein further illustrated because they form no essential part of the present invention.

Extending from the loom side and prefer-' ably secured to the upright 6 are the brackets 7 to which are preferably mounted at 8 between their ends jack levers 9. The upper and lower end portions 10 and 11 of the -j ack levers are connected to the several heddle frames, and as shown, such connection is afforded by a flexible means, such as the straps 12 which pass from the lower end of the jack levers about the pulley 13 and are connected to the bar 14; which is itself connected to one of the heddle frames 15, it being u1idorstood that the several jack levers are connected to the respective.heddle frames in substai'itially similar manner between their ends.

Extending between the uprights 6 of the loom, frame is the loom arch 16 on which are mounted the guide pulleys 17 and 18, over which pass

straps

19 and 20 which are socured to the associated heddle frame. The

straps

19 and 20. as shown, are connected to the upper end portion 10 of the jack levers 9.

Mounted at the side of the loom adjacent the jack levers are av series of jack operating cams, and in the present instance of the invention such cams find their support on a stand 21 extending from the loom side. Between suitable b'earings on the stand 21 eX- tends the cam supported shaft 22 on which the series of cams 23, one for each ack lever, is mounted. The cams 23 are preferably secured to the shaft 22 and such shaft carries a bevelled gear 24- secured thereto.

The cams for operating the jack levers are driven from a going part of the loom and, as shown, the driving shaft 25 extends transversely of the loom frame and carries a toothed gear 26 preferably located outside of the shaft bearing 27. Mounted in parallel relation with the driving shaft 25 is the transmitting shaft 28 which may be properly supported in suitable bearings 29, 30, one of which may be secured to the loom frame and the other to the stand 2!.

Secured to the transmitting shaft 28 a gear 31 which in constant mesh with the companion gear 26' on the driving shaft. Loosely mounted on the transmitting shaft 28 is the bevelled gear 52 which meshes with the bevelled gear 2t hereinbefore described, and such gear 32 is held from longitudinal movement 7 on the transmitting shaft, although free to rotate relative thereto.

Between the and the bevelled gear is the clutch member 33 splined to the shaft 28 and having a circular opening 3 1 which eng ged by the pins extending from the embracing arms 36 of a yoke 37 pivotally mounted at 38 on a bn cket or support 39.

The clutch member and the hub of the bevelled gear 32 are each provided with interengaging clutch members 40 and 41 which are constructed and arranged so that the clutch members can be engaged only when the jack lever operating cams and. the driving shaft are in predetermined relation. As shown, the clutch member has a pro ecting portion which constitutes one-half of the face of the clutch member. while the coop crating clutch member on the hub of the loose gear 32 has a similar half portion, the lGSUll'jl'lQllhQ' that the clutch members can be moved into engagement only when the projecting portion of each is opposite the recess in the other,v and as the bevelled gear is associated with the ack lever operating cams 23 through the gear it follows that the clutch members can be engaged only when the jack lever operating cams and per force the jacks and the driving shaft are in predetermined relation. such predetermined relation being that assumed when the clutch members were disengaged.

The 'vol-te member 37 is connected at 42 to the reach rod 53 which extends upwardly and has an arm llpivotallv mounted at 4-5 to the horizontal arm 46 of a bell crank lever pivoted at it? to the upright 6 of the loom frame. The other member 48 of the bell crank lever is pivotallv connected at 4-9 with alink 50 having its opposite end connected at 51 to the lower portion of a weighted hand lever 52 pivotally mounted at 53 on the upright 6. Instead of mounting the lovers upon the upright 6, as suggested, it has been found desirable to interpose between the levers and the upright 6 a bracket 5% formed as a plate which may be adjust ably connected to the upright 6 by a bolt 55 engaged in a slot 56 formed in the plate.

As hereinbefore mentioned, the hand lever 52 is weighted and may be provided with a weighted end 57 such that when the hand lever 52 is thrown into position for discenmeeting the clutch members hereinbefore described, the weight 57 will maintain the hand trip lever 52 in position with the clutch members disengaged. If desired, a stop may be utilized to limit the swinging movement of the hand trip lever 52 to and from its clutching and unclntching positions.

hfounted upon the loom arch 16 is manual means for operating the jack lever cams when the clutch hereinbefore described has been unclutched. In the present instance of the invention, the loom arch is provided with bearings 59 in which is mounted the shaft (30 havinqa bevelled gear 61 which engages a bevelled gear 62 mounted on the reach shaft 63. The reach shaft 63 extends oiagonally downward from the loom arch and is supported at its upper end in bearing (34-, while at its lower end it finds support in a bearing 5 carried by the bracket 39, and below the bearing ()5 the reach shaft is provided with a bevelled gear (36 which meshes with the bevelled gear 24 secured to the cam operating shaft 22.

The shaft 60, hereinbcfore described, is provided with manual means for turning the shaft and perforce the reach shaft and jack lever operating cams when the clutch members 40 and 41 are disengaged.

As indicated in Fig. 5. the shaft (30 is provided with a collar 6'7 which is secured there to by a set screw 68, and such collar has clutch teeth 69. Loosely mounted upon the shaft is the hand wheel 70, the hub portion 71 of which is provided with a clutch member 72 adapted to engage the projecting clutch portion 69 of the collar 67. and interposed between the hub of the hand wheel and collar 67 is a spring 73 normalh. holding the clutch members disengaged but permitting engagement thereof when the hand wheel is moved inwardly in opposition to the spring 73.

Should it become necessary at any time to stop the loom to find the pick or for piecing up broken ends or any other reasons connected with the formation of the fabric, the weaver may disengage the clutch members 40 and 41 by manual. operation of the hand trip lever 52, thereby disconnecting the jack lever operating cams from the power driving means. and since the hand trip lever 52 is weighted, as described, it will act to hold the parts in this position when once the clutch members are disengaged. The loom havingthus been stopped and the clutch members 40 and 4.1 disengaged, the weaver many manipulatetbe hand wheel 7 0 which is preferably located at the same side of the loom as the trip lever 52, and thereby turn the reach shaft 63 and operate the jack lever operating cams to find the pick or piece up broken ends or for other pur poses. When the defect in the weaving op eration has been cured, however, it is desirable that the heddle frames shall assume the same relative position as they had when the loom was stopped and the clutch members disengaged, before the power is thrown on to actuate the heddle frames. This is conveniently effected by forming the clutch members 40 and ll as hereinbefore described, so that they can only be engaged, after having been disengaged, when the cams and power shaft have been moved to their former relative positions, so that in starting up the loom the parts are in position to proceed with weaving perfect. cloth.

What is claimed is:

1. In loom shedding mechanism, the combination of jack levers, heddle frames, means connecting the heddle frames and jack levers, cams'for operating the jack lovers in the formation of sheds, an operating shaft for the cams, gearing connections between the operating shaft and cams including a clutch, a hand operated trip lever for disconnecting the clutch members and interrupting the driving connection with the operating shaft to free the cams, a reach shaft having gearing connection with the cams and extending to the loom arch, a manually operable shaft on the loom arch having gearing connection with the reach shaft, and a hand wheel disposed at the same side of the loom as the trip lever for operating the reach shaft when the trip lever has been manually operated to disconnect the clutch members.

2. In a loom shed-ding mechanism, the combination of jack levers, heddle frames, flexible connections between. the upper and lower ends of the jack levers and heddle frames, jack lever operating cams, a driving shaft for the cams, gearing connection between the driving shaft and cams including a clutch, the members of whiclr are engageable only when the cams are in the same position they were when the clutch members were disengaged, a hand operated trip lever for disconnecting and connecting the clutch members, a reach shaft having gearing connection with the cams and extending to members of which are engageable only when the cams are in the same position they were when the clutch members were disengaged, a hand operated trip lever for dis connecting and connecting the clutch members, a reach shaft having a gearing connection with, the cams and extending to the loom arch, and a hand wheel at the same side of the loom as the trip lever for operating the reach shaft when the clutch members have been disengaged.

l. in a shedding mechanism for looms, the combination of a series of heddle frames, iat-k levers connected to the heddle frames, jack lever operating cams, a driving shaft for the cams, gearing connections between the said shaft and cams including a clutch, the members of which are provided with interlocking portions constructedand ar ranged for driving engagement only in a predetermined relation of the driving shaft and cams that power operation of the cams can be effected by the clutch only when the heddle frames are in the same relative position they occupied. when the clutch members were disengaged, a hand operated trip lever for operating the clutch, a reach shaft, gearing connections between the reach shaft and cams, and a hand wheel on the loom arch for manually turning said cams when the clutch members are disengaged.

In a shedding mechanism for looms, the combination of a series of heddle frames, jack levers connected at their upper and lower ends to the top and bottom of the heddle frames, jack lever operating cams, a driving shaft for the cams, gearing connections between said shaft and cams including a clutch, the members of which are provided with interlocking portions constructed and arranged for driving engagement only in a predetermined relation of the driving shaft and cams that power operation of the cams can be effected by the clutch only when the heddle frames are in the same relative position they occupied when the clutch members were disengaged, a hand operated trip lever for operating the clutch, a reach shaft, gearing (connections between the reach shaft and cams, and a hand wheel on the loom arch for manually turning said cams when the clutch members are disengaged.

6. In a shedding mechanism for looms, the combination of a series of heddle frames, jack levers pivotally mounted between their ends at the side of the loom frame and connected at their upper and lower ends respectively to the top and bot-tom of the heddle f ames, a series of jack lever operating cams at the side of the loom frame for operating the jack levers, a driving shaft, gearing connections between the driving shaft and cams including a clutch, a trip for operatin the clutch, comprising a hand lever at the side of the loom, a bell crank lever adjacent thereto, a link connecting the bell crank lever and hand lever, a reach rod connected to the bell crank lever, a yoke connected to the reach rod for operating the clutch, a reach shaft between the cams rod connection between the weighted hand and loom arch, and a hand Wheel for operating the reach rod and cams when the clutch disengaged.

7. In a shedding mechanism for looms, the combination of a series of heddle frames, jack levers connected to said heddle frames, a series of cams at the side of the loom for operating the jack levers, a driving shaft, gearing connections between the driving shaft and dams including a clutch, a trip for the clutch having a weighted hand piece pivotally mounted, a hell crank and reach piece and clutch that the weighted hand piece may maintain the clutch disengaged when the hand piece is manually moved to clutch disengaging position, a reach shaft geared to the cams, and a hand Wheel on the loom arch for operating the reach shaft while the clutch is held disengaged by the weighted hand piece.

In testimony whereof, I have signed my name to this specification.

CARL D. BROWN.