US496766A - John t - Google Patents

Description

J. .T. AHRENS. LOOM SHUTTLE.

Patented May 2, 1893 SwuaMoz Jbhn III .flhrerw Wow m3 m IEEIEES EIE.

(No Model.)

UNITED STATES PATENT ()FFICE.

JOHN T. AHRENS, OF WILMINGTON, DELAWARE, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF ELEVEN-SIXTEENTHS TO WILLIAM S. KNIGHT, GEORGE HILLSLEY, AND FRANCIS E. GALLAGHER, O F SAME PLACE.

LOOM-SHUTTLE.

SPECIFICATION forming part of Letters Patent No. 496,766, dated May 2, 1893.

Application filed June 8, 1892- Serial No. 435,960 (No model.)

To all whom it may concern: ative position shown in Fig. 1, by means of a Be it known that 1, JOHN T. AHRENS, of bobbin spring or tongue E. This bobbin Wilmington, in the county of New Castle and spring or tongue is located in a recessiin the State of Delaware, have invented certain new upper face of the end a, of the shuttle, and is and useful Improvements in Loom-Shuttles, held therein by a screw m which extends 5 5 of which the following is a specification. through the bobbin spring and screws into The present invention is an improvement the wood of the end a, of the shuttle. This upon the construction of that class of loom screw also gives tension to the bobbin spring shuttles which are probably most widely used, E, which is slightly arched. The inner end of re and its object is to overcome the defects of thisbobbinspringortongueEco-operateswith 6c this old style of shuttles. the head 71., of the spindle C. This head has In order that the present invention may be a face 0, parallel with the axis of the spindle, clearly understood, I will first describe the old and when the spindle is in the operative posistyle of loom shuttles to the improvement of tion shown in Fig. 1,the free end of the bobbin which the present invention relates, in conspring E, bears against the face 0, and there- 65 nection with the accompanying drawings, by holds the spindle in the proper position. Wherein- When, however, it is desired to effect a sub- Figure 1, is a central vertical longitudinal stitution of bobbins,-as to remove an empty section of the old style of loom shuttle, showone and replace it with a full one, the spin- 2o ing the parts in position for use. Fig. 2, is a dle C is turned on its pivot d to the inclined 7': similar section of one end of the shuttle, showposition shown in Fig. 2. When the spindle ing the spindle elevated for the removal and is in this position, the groovef, of the bobinsertion of the bobbin or cop. Fig. 3, is a bin B, is out of engagement with the catch 6 section similar to Fig. 1, of one end of the of the bobbin catch plate D, so that the bobshuttle, showing theimprovements. Fig 4, is bin may be freely moved longitudinally of 7 a top view, and Fig. 5, a bottom view, of the the spindle C. The spindle C is maintained same end of the shuttle, showingthe improvein its upwardly inclined position, shown in ments. Fig. 6, is a detail View of the im- Fig. 2, during the substitution of bobbins by proved bobbin catch plate. the bobbin spring E, resting upon a face s,of I 3o Referringfirst to the old style shuttleshown the head n of the spindle C, which face 8 is 80 in Figs. 1 and 2, A is the wooden body of the inclined to the axis of the spindle and is shuttle, having ends a b, and the usual cenbrought into operative relation with the bobtral slot 0, in which is located the bobbin B. bin spring by the turning of the spindle on The bobbin is slipped onto a spindle C, which its pivot. 5 is pivoted at one end by a pin or shaft cl, ex- Now several defects arise in the use of these 85 tending crosswise of the shuttle at one end, as old and widely used shuttles. In the cona. Then the shuttle is in its operative posistant moving of the spindle on its pivot to tion,' the spindle C, and bobbin B, occupy the substitute bobbins, the bobbin spring E, is position shown in Fig. 1, parallel with the lonsubject to constant flexure, and the resistance 40 gitudinal axis of the shuttle. The bobbin is to this flexure is afforded by the screw m. 90 then retained in place on the spindle, and is There is consequently great strain brought prevented from slipping thereon, by means of upon the screw m, which is thereby frequently a bobbin catch 6, on a bobbin catch plate D. broken off, but more frequently is worked The catch 6, engages a peripheral groove f,- loose by the tearing away of the wood of the on the end of the bobbin. The plate D, is shuttle between the screw threads. When 5 located in a recess g at the bottom of the end the screw m is thus loosened, the tension of a, of the shuttle, and is held in place by a the bobbin spring E, is destroyed,so that the screw h, which passes through the plate D, spindle swings on its pivot during the throw and into the wood of the end a, of the shuttle. of the shuttle. The free end of the bobbin The spindle C, is retained in its proper operis thus frequently thrown up beyond the body [00 of' the shuttle, and if this occurs, as it frequently does, while the shuttle is passing through the shed,the warp threads are broken and the loom must be stopped until the damage is repaired. It the'screw, however, is broken, not only does the spindle swing freely on its pivot, but the bobbin spring falls off and becomes an instrument of damage. If a shuttle becomes thus damaged, either by the loosening or the breaking of the spring plate screw, it is almost impossible to repair it. If the screw has worked loose, the shuttle can only be repaired by using a larger screw or by plugging the screw hole. It a larger screw is used, the wood of the shuttle is usually split, thus entirely destroying the shuttle, and the plugging of the hole is a temporary rem- .edy only. Similar defects exist also in reference to the bobbin-catch plate. If in placing a bobbin on the spindle it is not pushed clear down, but is only partially pushed into place, as often happens with careless operatives, the end of the bobbin is brought into contact with the bobbin catch 6, when the spindle is returned to its operative position, shown in Fig. 1. As the result of such carelessness, the bobbin catch plate D is subjected to strain which is borne by its screw h. The strain upon this screw causes it to be broken and to come loose with the same evil consequences as result from the breaking or loosening of the spring screw m.

In order to avoid the defects just enumerated, many constructions have been devised. But as far as I am aware, all such w attempts have been practically unsuccessful.

present invention are illustrated in Figs. 3,

4, 5, and 6. In accordance with the present invention, the spindle, bobbin, and bobbin spring are unchanged. The bobbin catch plate is, however, of novel construction, as shown in Fig. 6. The metallic bobbin catch plateD does not have a screw hole passing through it, as in the old style shuttle, but is formed with a projecting boss t, on its inner face, which is formed with a threaded provision such as a female-threaded socket w. The end a, of the shuttle is suitably recessed for the reception of this boss 25, as shown in Fig. 3.

When the bobbin catch plate is in place on the shuttle, its socket to, is in line with the screw aperture in the bobbin spring E. Instead of two screws h and m being used, a single screw bolt G, is employed. This screw bolt does not screw into the wood of the shuttle, but a hole is bored through the shuttle, as shown in Fig. 3, through which the bolt freely passes. The bolt G, is passed through the aperture in the bobbin spring, thence through the hole in the shuttle, and screws into the socket to, of the bobbin catch plate. Thus a'single bolt serves to attach and lock both the bobbin catch plate and the bobbin spring to the shuttle. This simple improvement effectually overcomes the defects in loom shuttles having a bobbin spring and a bobbin catch plate. The screw bolt G,never becomes loose, since it screws into metal, and not into the Wood of the shuttle. The screw bolt, also, is not likely to break because it has some freedom of movement in the hole of the shuttle through which it extends. Should it ever bleak, the shuttle can be readily repaired by the substitution. of a new bolt. With these improved shuttles the only limit to the life of the shuttle is the eventual wearing away of the wood of the shuttle.

A main advantage of the improved shuttle is its simplicity and economy. The meritorious features of the existing shuttles are retained without change, and the advantages of the new shuttle are attained without any additional cost.

Another and important advantage of the improvements is that they can be applied to existing damaged shuttles, by simply boring in such a shuttle a hole for the bolt to pass through and a recess for the boss t, of the bobbin catch plate.

I claim as my invention- 1. A loom shuttle having a bobbin spring, a bobbin catch plate, and a single bolt connecting said spring and catch plate together and attaching both to the shnttle,substantially as set forth.

2. A loom shuttle having on one side a bob-- bin catch plate with a female threaded socket, on its opposite side a bobbin spring, and a bolt passing through the bobbin spring and shuttle, and screwing into said socket, whereby said bobbin catch plate and said bobbin spring are locked together and attached to the shuttle, substantially as set forth.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

JOHN AHRENS.

Witnesses:

THOS. J. BROWN, Jr., A. J. WOODMAN.

ICC

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