US981050A - Picker-check for looms. - Google Patents

Description

w. M. BMBBR.v Hom 05H01: Fon Looms.

APPLIOATION PILBDBEPT. 20, 1910.

Patented 'Jan A10, 1,911.L

UNITED sTATEs'PATENT oFnioE.

WILLIAM M. BARBER, 0F PHENIX, RHODE ISLAND, VASSIGNOR TO DRAPER COMPANY, OF HOPEDALEVMASSACI-IUSETTS, A CORPORATION OF MAINE.

PICKER-CHECK FOR LOOMS.

Specification of Letters Patent.

Application filed September 20, 1910. Serial No. 532,837.

To all whom it may concern:

Be it known that I, WILLIAM M. BARBER, a citizen of the United States, and resident of Phenix, county of Kent, State of Rhode Island, have invented an Improvement in Picker-Checks for Looms, of which the following description, in connection with the accompanying drawing, ,is a speoiication, like characters on the drawing representing like parts. j

This invention has for its object the production of simple and efficient means to check the movement of the picker in a loom, the checking means being so constructed and arranged that it coperates with the picker-stick as it approaches each end of its stroke and by frictional engagement stops it at the proper point without undue wear or shock.

The checking means is located beneath the l lay and as it in no way interferes with the 7 traversing the slot in the lay behind thel ejection of a spent bobbin in automatic fillmg-replenishing looms of the Northrop type it is well adapted for use in connection therewith, but my invention is not by any means restricted to such use.

Herein I have illustrated one practical embodiment of my invention in connection with the lay of a Northrop loom at the replenishing side thereof, such a loom, for instance, as is shown in United States Patent No. 529,940 granted to Northrop November 27, 1894.

The checking action upon the pickerstick can be readily adjusted to any desired degree, as will appear hereinafter.

The novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Figure 1 is a front elevation of t-he lay of an automatic illing-replenishing loom at the replenishing side thereof, with one embodiment of my invention applied thereto; Fig. 2 is a top plan view of the checking means detached from the loom, the pickerstick being shown in section; Fig. 3 is a transverse section on t-he line 3 3, Fig. 1, looking tow'ard the left.

The longitudinally-slotted lay 1 and its race-plate 2, the front and back plates 3, 4 of the shuttle-box, the cover-plate 5, and binder 6, Fig. 1, may be and are all of usual or well known construction, the picker-stick front guide 8 which latter is bolted at 9 to the lay, the defiecting plate or guide 10 for the spent bobbin being located at the inner end of the front guide 8, as usual. Said front guideis provided with a frontwardly extended, slotted ear 11 which herein forms One-of the supports for the picker check, the .other support being shown in Fig. 3 as a bracket 12 bolted to the back of the lay behind said ear 11. Upon each of said supports I bolt a plate 13, which in practice is substantially horizontal and eX- tended outward toward the loom side, the inner end of each plate having formed upon or secured to it a downturned tubular boss 14, through which extends a headed fulcrum stud 15. The fulcra 15 are parallel and opposite to each other, and extend through apertured lateral ears 16 in the checking members, shown clearly in plan view', Fig. 2, each member presenting oppositely extended inner and outer arms 17,18, the latter being somewhat longer, and the flat and smooth inner faces of each pair of the arms are at an obtuse angle `to each other. When the two members are in operative position in front and behind the path of the picker-stick the arms 17 converge, as do also the arms 18 at the outer side of the fulcra 15.

The checking members are conveniently made of metal, and are substantially rigid inherently, but they can swing laterally about their fulcra and when so swung their outer ends will approachwhen their inner ends are. separated, and vice versa, such separation being effected by the intervening picker-stick 7 as shown in Fig. 2.

Referring to Figs. 1 and 3 the ears 16 of the checking members abut against the lower ends of the bosses 14, and a spring 19 is interposed between each ear and checknuts 20 screwed onto the lower end of the fulcrum stud, to maintain the ear 16 of a checking member in frictional engagement withV the adjacent boss 14. The more the spring is compressed by setting up the corresponding check-nuts the harder will the ear be pressed against the boss, and consequent-ly the greater will be the frictional resistance offered tov any lateral swinging movement-of achecking member about its fulorum stud. I prefer to interpose washers 21, 22 between the ends of the spring and the adjacent parts, to wit, the ear 16 ,ferned by the friction means described, de-

and the check-nuts. The checking members j 2. In a loom, in combination, a lay longi- `are spaced apart to properly coperate with the picker-stick as it nears each end of its stroke, and to be pressed apart as the stick completes its stroke, the resistance to the lateral swing of the checking members, govtermiiiing t-he amount of check exerted upon the picker-stick. Such resistance can be readily increased or diminished, according to the requirements of the particular loom to which the checking means is applied. Supposing the picker-stick separates the arms 18 on its outward stroke then the arms 17 will be moved toward each other, as in Fig. 2, and' when the stick moves inward it willimpinge upon and separate the said' arms V17, and in so doing will be checked, but at the'same time the outer Aarms 18 .are moved toward each other 'and reset for"coperation with and checking of the 'picker-stick on its next outward stroke.

Thus the checking members are double-acting and the picker-stick on either stroke sets the checking members to coperate properly therewith on its next stroke. The

youter arms 18 'are made somewhat longer than'the inner arms 17 in order to properly locate the imlpingingy portions of both sets of armswith relation to the picker-stick as it swings inwardy and outward. Inasmuch as there is little wear between smooth metal faces and wood there is insignicant wear upon the picker-stick due to the cooperation therewith lof the checking members, and as ,the friction devices are always acting upon suchmembersithe'latter remain in any given angular position relative to their rfulcra until positively moved therefrom by impact of the picker-stick thereon.

Various changes or modications in details of construction and arrangement may be made by those skilled in the art without departing from the spirit and scope of my invention as set forth in the claims annexe? hereto.

`tudinally slotted for the picker-stick, said picker-stick, and checking means therefor comprising oppositely positioned checking members fulcruined between their ends and converging toward their outer and inner ends, to' frictionally engage the picker-stick on its outward and inward strokes, respec` tively, the picker-stick traveling between said; members, fulcra for the vlatterfixedly con-v nected with the lay and upon which the` members swing laterally when impingedE upon by the picker-stick, an'd means to resist such lateral movementof the checking members and thereby bring the picker-stick to rest at each end of its travel.

tudinally slotted for the picker-stick, said picker-stick, and checking means therefor comprising elongated members fulcruined between their extremities at the front and rear of the path of the picker-stick and converging toward their inner and louter ends, engagement with l the picker-stick on either stroke acting to separate laterally the adjacent ends of the checking members and cause their other ends to approach each other, fulcra for said members, fxedly connected with the lay and upon which the members swing laterally, and yielding means to resist such" lateral movement and thereby cause said members to check the movement of the picker-stick at each end of its travel.

3. The combination with the lay of a loom, and a picker-stick, of checking means comprising opposed checking members to cooperate with and check the picker-stick at each end of its stroke, fiilcra carried by the lay and upon which said members are mounted between their'inner and outer ends to swing laterally, and friction devices acting upon the checking members adjacent their fulcra to resist lateral movement thereof due to engagement with the picker-stick at either the inner or the outer ends of said members.

4. The combination with the lay of a loom, and a picker-stick, of checking means comprisinV inherently rigid checking members pivott` the picker-stick path, the opposite faces of said members converging from their fulcra to their extremities, fulcra fixedly connected with the lay and upon which said checking members are adapted to swing laterally, the engagement of the picker-stick by said members near one end sett-ing the opposite end thereof to coperate with and check the picker-stick on its next stroke, and adjustable friction controlling means to regulate the resistance of said members to swinging movement when engaged by the picker-stick. `Having fully described my invention, what 5. The combination with the lay of a loom,

' and a picker-stick, of checking means comvprisingopposed checking members to cooperate. with and check the picker-stick at each end of its stroke, fulcra carried by the lay and upon which saidmembers are mounted to swing laterally, andI friction dcvices acting upon the checking members to resist lateral movement thereof due to engagement with the picker-stick, each device comprising a fixed contact surface and a cooperating surface on the checking member,

j a spring to yieldingly press said surfaces together, and means to vary the action of the spring thereupon.

6. The combination with the lay of a loom,

and a picker-stick, of checking members mountedfopposite each other at the front and rear, respectively, of the path ofthe pickerstick, a fulcrum xedly connected with the lay and upon which one of said members is mounted substantially midway between its ends and adapted to swing laterally, the opposed impact faces of said members converging toward their extremities adjacent the inner and outer ends of the stroke of the picker-stick, whereby the engagement of the picker-stick with said members near either the inner or the outer extremity thereof swings the fulcrumed member and causes the opposite extremities of said members to two subscribing witnesses.

WILLIAM M. BARBER.

Witnesses:

FRED M. HUToHINsoN, JOHN C. EDWARDS.

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