US1244122A - Loom-picker. - Google Patents

Description

J NOHTHROP.

LOOM PICKER.

APPLICATION FILED 1AN.'B I9 !6.

Patented .00 5. 23,1 17.

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Unrrnn sia'rns PATENT ome v JONAS NORTHROP, 0F HOPEDALE, MASSACHUSETTS, ASSIGNOR TO HdPEDAL-E MANIT- FAQTUBING COMPANY, OF MILFORD, MASSACHUSETTS, A CORPORATION OF MASSA- GHUSETTS.

Loom-Molina,

, Specification of Letters Patent.

Patented 0015.23, 1917.

Application filed January 8', 1916. Serial No. 70,937.

To all whom it may concern:

Be it known that I, JONAS NORTHROP, a citizen of the United States, residing at Hopedale', in the county of Worcester and State of Massachusetts, have invented-centain new and useful. Improvements in Loom- Pickers and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

The present invention relates to an improvement in loom pickers.

In converting old, plain looms, during the Operation of which weft replenishment is effected by the operator, into automatic, weft replenishing looms, it is usually necessary, among other alterations, to enlarge the aperture in the shuttle race, in which the picker-staff oscillates, in order that the ejected bobbin may fall therethrough.

The enlargement of the picker-staififsl for the passage of the ejected bobbin n that type of looms in which the picker-st fl is pivoted on the rock shaft sustaining the lay swords, allows the picker, which is loosely engaged by the picker staff, tofall below the shuttle race and thereby be out of position to engage the shuttle. Hitherto, no simple and efiicient device has been pro-, duced permitting this particular type of plain loom to be converted into an automatic loom without first radically altering the shuttle box and associated parts.

The object of the present invention is, therefore, the production of adevice by means of which plain looms of the pivoted picker-staff type may be converted into automatic looms with a minimum requirement of alterations in the shuttle box and its asso- To the accomplishment ,of this object, the invention consists of the I improved loom picker described in the fol lowing specification and particularly pointed out in the appended claims. 1

In the accompanying drawings illustrating the preferred form of the present invention, Figure 1 is a front elevation of the left-hand 'end' of aloom showing the parts necessary to a disclosureof the invention; Fig. 2 is a plan of the parts shown in Fig.

-1, and Figs. 3 and 4Qare sectional views respectively, on the-lines 3-3 and 4- of The loom to which the improved piclger is applied may be, in general, of any usual construction. In the particular type of 100m illustrated in the drawings, the pickerstafi, which is indicated at 5, is pivoted at 6 on a rock shaft 7 journaled in. the usual manner in the loom frame 8. Thepivotal mounting of the pickeresta'if on the rock shaft makes necessary a loose connection between the picker and the picker-staff in order that the usual longitudinal movement may be imparted to the picker at each actuation of the picker-stafl. Accordingly, the picker, which is indicated at 9, is provided with a hole which is large enough for the free accommodation of the upper end of the picker-staff, so that, as the picker-stafl'.

oscillates on its pivot, the picker may reciprocate longitudinally on the shuttle race 10. The shuttle race 10 forms the upper surface of the lay 11, which is supported by the lay sword 12 mounted on the rock shaft 7. To permit the upper end of the pickerstaff to oscillate to communicate a reciprocatorymotion to the picker, that part of the shuttle race-located above thepicker-stafi' is provided with a longitudinally disposed slot 14. This picker-staif slotis but slightly wider than the picker-stafii3 consequently, the picker,which is considerably wider than the picker-stafi",has sufficient bearing surface on the shuttle race adjacent the picker-'stafi' slot so that it may slide over vthe slot and properly pick the, shuttle.

if it is desired to convert theplain loom into an automaticloom, it is necessary to enlarge that portion 15 of the picker-staff slot situated below the bobbin wheng the shuttle is boxed. This portion 15 of the pickerstafi' slot is that part through which the bobbin passes when it is ejected from the picker, as originally 'made, is not Wide enough to prevent its dropping'throughthe enlarged slot. Now it is obvious that if a .new picker were made of such width as to prevent its falling through the enlarged portion of the picker-staff slot, it would be the picker, as origina allow it to perform its shuttle picking function properly andyat the same time, keep the other parts of the shuttle box substantially-unaltered In accordance with this proposition,. the invention contemplates interposing a plate; like device of low friction material between the picker and the shuttle race. Although the'invention is not restricted to the use of fore, interpose any particular material for the purpose, experiment has demonstrated that rawhide answers the requirements of the situation more satisfactorily than other materials. A thin plate-like strip .of rawhide 16 is, therebetween the'picker 9 and the shuttle race 10. The rawhidepicker plate 16 is oblong in outline, as shown in Fig. 2, is provided with an aperture for the reception of the upper end of the picker-staff, is of the same length as the picker, and is of sufficient Width to enable it to pass over the enlarged portion 15 of the picker-staff slot 14 Without liability of the picker being projected therethrough Inasmuch as the inner wall of the binder, indicated at '17, approaches very closelyvto the picker, as hereinbefore described, it is necessary to cut a recess 18 in the lower inner corner of the binder contiguous to the shuttle race,,as shown. in Fig. 4., to permit the picker plate 16 to pass freely therethrough. This slight recessing of the binder is the only alteration necessary to remove impediments to the recipri'ica't-ion of the picker plate.

.Vhen an old loom of the pivoted pickerstaii' type has been converted into an auto loom as a plain loom into an automatic loom.

The picker-plate is comparatively thin, being of just sufficient thickness to properly support the weight of the picker, so that \it is not necessary to make any alterations in the height of the shuttle box) It is apparent, then, from the foregoing description, that by means of the present inven tion a plain loom of the pivoted picker-staff type may be converted into an automatic loom with a miniinurn requirement of shuttle box alteration.

Having thus described a preferred form of the invention, what is claimed as new is 1. A loom having, in combination, a lay,

a shuttle race, a shuttle box, a' binder arranged to yieldingly engage the shuttle as it entersthe shuttle box, avpivoted'pickerstaff, a picker loosely engaging the pickerstafl', a picker-staff slot in the shuttle race having an enlarged portion of greater width than the picker for the passage therethrough of an ejected bobbin, and a low friction plate of greater width than the enlarged portion of the slot interposed between the picker and the shuttle race 2. A loom having, in combination, a lay, a shuttle race, a shuttle box, a pivoted picker-strait, a picker loosely engaging the picker-staff, a binder having an inside wall closely adjacent to'one side of the path of travel of the picker for yieldingly engaging the shuttle as it enters the shuttle box, a I

picker-staff slot having an enlarged portion of greater width than the picker, a plate of greater width than the enlarged portion of the slotinterposed between the picker and the shuttle race, and a recess formed in the inner wall of the binder for the free passage of the part of the plateextending laterally beyond the picker.

JONAS NORTHROP.

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