US682445A

US682445A - Stop-motion for looms.

Info

Publication number: US682445A
Application number: US6358601A
Authority: US
Inventors: Horace Wyman
Original assignee: Crompton and Knowles Corp
Current assignee: Crompton and Knowles Corp
Priority date: 1901-06-07
Filing date: 1901-06-07
Publication date: 1901-09-10
Anticipated expiration: 1918-09-10

Description

No. 682,445. Patented Sept. [0, I90I.

H. WYMAN.

STOP MOTION FOR LOUMS.

(Application flledjune 7, 1901.) (No Model.) 7 2 Sheets-Sheet J, 7% 5 [0woe/ W A No. 682,445. Patented Sept. [0, I90].

H. WYMA'N.

STOP MOTION FOR LOOMS.

(Application filed Jun 7, 1901) (No Model.)

2 Sheets-$heet 2.

llwiTn STaTns PATENT Trice.

HORACE XVYMAN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON 6t KNOWLES LOOM WORKS, OF SAME PLACE.

STOPHVIOTlON FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 682,445, dated September 10, 1901.

Application filed June '7, 1901.

To (all whom, it may concern.-

Be it known that I, HORACE \VYMAN, a citizen of the United States, residing at VVorcester, in the county of orcester and State of Massaehusetts,l1ave invented certain new and useful Improvements in Stop Mechanism for Looms, of which the following is a specification.

My invention relates to stop mechanism for looms, and more particularly to an improvement in the warp stop mechanism shown and described in my United States Letters Patent No. 665,713, dated January 8, 1901.

The purpose of a warp stop mechanism for looms, as is well known, is to instantly stop the loom when the warp breaks or becomes too slack.

The object of my invention is to improve upon and simplify that portion of the warp stop mechanism shown and described in said Patent No. 665,713, which is located at the front part of the loom on the frarneto operate the shipper-handle, and more particularly the construction and operation of the main daggerdifter (lettered 26) in said patent.

My invention consists in certain novel features of construction of myimprovements in warp stop mechanism for looms, as will be hereinafter fully described.

I have only shown in the drawings sufficient portions of the warp stop mechanism shown in the drawings of said Patent No. 665,713, with my improvements applied thereto, to enable those skilled in the art to which my invention belongs to understand the construction and operation of the same.

Referring to the drawings, Figure 1 is a right-hand side elevation of the front portion of a loom with my improvements applied thereto and showing the lay in its backward position. Fig. 2 corresponds to Fig. 1,but shows the lay in its forward position and the stop mechanism in its opposite position. Fig. 3 shows, on an enlarged scale, parts of the stop mechanism shown in Fig. 1; and Fig. 4 is a rear view of the parts shown in Fig. 3 looking in the direction ofarrow a,same figure.

I have used in the drawings the same letters and figures of reference as are used on the corresponding parts in said PatentNo.665,713.

In the accompanying drawings, A is a por- Serial No, 63,586. (No model.)

tion of the loom-frame; A, the lay, pivoted at A and carrying the usual reed a and actuated in the usual way through connectors from the crank-shaft. (Not shown.) E is the shipper-lever, working in a slot in an extension a, notched at one side on one end of the breast-beam (not shown) in the usual way. All of these parts are of the ordinary construction.

I will now describe the warp stop mechanism with my improvements applied thereto.

A stand 16 is secured to the side frame A of the loom, and a dagger-carrier 19 is mounted to turn on the pivot-stud 20 in the stand 16. The lower end of said dagger-carrier 19 has jointed to it at 21 the dagger 22. The lower part of the stand 16 has an extension 16 thereon, which has fast therein astud 75, on which is mounted the main dagger-lifter 76, which has a cam-surface 76 thereon (see Fig. 4:) to engage the under side of the dagger 22 and hold the same out of range of the hunter 28, which is attached to the lower end of a stud 31, secured upon the under side of the lay, (see Fig. 1,) while the loom is not running or whileit is being operated by the hand of the weaver. The raising of the dagger 22 by the cam-surface 76 also permits the readjustment of the dagger-support 35 after the dagger 22 has been operated to stop the loom, as will be hereinafter described. The dagger-lifter 76 moves in a plane at right angles to the plane of movement of the dagger 22 and parallel with the plane of movement of the shipper-lever E and has a side extension 76 thereon extending inthe path of and engaged by the shipper-lever E when the shipper-lever E is in its operative position to start the loom. The upper end of the daggerlifter 76 has an extension 76', Fig. 4, which extends over the dagger 22 and prevents the operator from throwing back the dagger 22 to render the stop-motion inoperative.

A spring 77 is connected at one end to an extension 78 on the hub of the dagger-lifter 76 and at its other end to a hook or extension 19" on the dagger-carrier 19. The dagger-carrier 19 at its upper end engages and operates a stop-lever 3t, pivoted at the under side of the breast-beam, (said stop-lever 3st being commonly actuated to unlock the properly boxed in the ordinary way,) moving said lever 3i and moving the shipper-handle E out of its retaining-notch, so that it will spring into its inoperative position when the dagger 22 is engaged by the bunter 28, as shown in Fig. 2.

In connection with the main dagger-lifter 76 the second dagger-support 35 is provided, centrally pivoted on a stud 36 in the stand 16, with its upper end adapted to extend under and engage a projection 63 on the dagger 22. The lower end of the second dagger-support 35 has attached to it a connection 38, leading to the warp stop mechanism (not shown in the drawings, but fully shown and described in Patent No. 665,713, above referred to) and through which the operation of the dagger-support 35 is controlled to move from under the projection 63 on the dagger 22 and allow the dagger 22 to drop into the position shown in Fig. 2 to be engaged by the hunter 28 on the forward movement of the lay.

When through the breaking of a warpthread or a warp-thread becoming too loose the second dagger-support 35 through connection 38 is moved into the position shown in Fig. 2, the dagger 22 will drop into the position shown in said Fig. 2 to be engaged by the hunter 28 on the forward stroke of the lay, the dagger-lifter 76 being held in its backward position out of engagement with the dagger 22, as shown in Fig. 4, by the engagem-ent of the shipper-lever E with the side extension 76 on said dagger-lifter 76. The engagementof the bunter28 with the dagger 22 will move the dagger-carrier 19 on its pivot 20 to cause it to actuate the stop-lever 34: to move the shipper-lever E out of its retainingnotch in the extension a and allow it to spring back and operate to ship the belt to stop the loom in the usual way.

Upon the movement of the shipper-lever E,

as above described, the spring 77 immediately acts to rotate the dagger-lifter 76 on its supporting-stud and move the cam-surface 76 under the dagger 22 to raise said dagger and move it out of the path of the bunter 28, as shown in Fig. 1. At the same time the spring 77 acts to move the dagger-carrier 19 011 its pivot-stud 20 into the position shown in Fig. l away from the stop-lever 34:. A stop 79 on the stand 16 limits the movement of the dagger-carrier 19. The dagger 22 is thus put into a position where it cannot be struck a second time by the buhter 28 and also into a position where the second dagger-support 35 shipper-handle whenevera shuttle fails to be i can be moved under the dagger 22 to support it, as shown in Fig. 1. The movement of the shipper-lever E by the hand of the operator to put the loom into operation will cause it to engage the extension 76" on the dagger-lifter 76 and move the dagger-lifter 76 out of engagement with the dagger 22 and into the position shown in Fig. 4, while the second dagger-support 35 immediately returns to its normal upright position, as shown in Fig. 1, thus leaving the parts in an operative position.

The advantages of my improvements will be readily appreciated by those skilled in the art. I simplify the construction of the parts shown in said Patent No. 665,713 and do away with the device shown in said patent attached to the shipper-lever.

It will be understood that the details of construction of my improvements may be varied, if desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a loom, the combination with a dagger, and the shipper-lever, of a dagger-lifter, moving in a plane at right angles to the plane of movement of the dagger, and operative to engage and hold the dagger in its inoperative position, and having an extension in the path of the shipper-lever, to be engaged thereby, and moved out of engagement with the dagger, substantially as shown and described.

2. In a loom, the combination with a dagger, and the shipper-lever, of a dagger-lifter, having a cam-surface thereon to engage the under side of the dagger and hold it in its inoperative position, and having an extension in the path of the shipper-lever, to be engaged thereby, and moved out of engagement 1 with the dagger, substantially as shown and described.

3. In a loom, the combination with a dagger, and the shipper-lever, of a dagger having a cam-surface thereon to engage the under side of the dagger and hold it in its inoperative position, and having an extension in the path of the shipper-lever to be engaged thereby, and moved out of engagement with the dagger, and also an extension over the dagger, to prevent the dagger being raised out of its position, substantially as shown and described.

HORACE WYMAN. \Vitnesses:

J. O. DEWEY, M. HAAS.