US1286544A - Picker-stick check. - Google Patents

Description

w. CURRAN.

PICKER STICK CHECK.

APPUCATION FILED 050.10. 1917.

Patented Dec. 3,1918.

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WILLIAM oim mm, or LEWISTON, MAINE, assienonoronn-i-ianrTo rA'rnioK r.

, 1 i Tani/in eger LEWISTON, MAINE. i 1 it i icxnn-sricx CHECK.

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Specification of Letters Patent.

Application filed Decem ber in, 1917." Serial n6. 206 482;

" To all whom it may concern:

citizen of the United States, residing at the position make and use the same.

Be it known that I, W'ILL AM GUR AN, a

Lewiston, in the county of Androscoggin and State of Maine, have invented certain new and useful Improvements in Picker- Stick Checks; andl do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilledin the art to which itappertains to I My inventionhas for object to provide an extremely simple andinexpensive, yet a highly efiicient and durable device for checking the speed of the picker-sticks ofa looin as said sticks near the limit of their travel;

and with this general object in iew, the invention resides in the novel featuresof construction and unique combinations of parts to be hereinafter fully described and claimed, the descriptive matter being supplemented by the accompanyin drawings which form a part ofthisspeci cation and inwhich: j

Figure 1. is a top plan view of the invention showing the lay of the loom and the picker stick inf dotted lines and illustrating 0 stick has reached the limit of its proceeding ti n; 4 j M i a 1 Fig. 2 is a duplicate of Fig. 1 but disclosing the position of the check when thepicker stick has completedits receding movement;

Fig. 3 is a side elevation of the check; Fig. 4 is a transversesection on the plane ofthelineHof Fig.3; 1 Fig. 5 is a perspective View of the attaching plate; and

Fig. 6 is a plan View bar. 1 j p In the drawings above briefly described, the numeral 1 designates the lay of a loom and 2 has reference to the picker stick which is forced in one direction to send the shuttle along the lay and then returns to normal, awaiting the return of said shuttle. It is j the object of my invention to improve upon devices heretofore employed for slowly bringing the picker stick to a stand still and with this end in view I employ the construetion described below. p A horizontal supporting plate 3 extends longitudinally of the lay 1, preferably below the latter and is provided with a vertical flange or the like a secured to said lay, lugs of the stick-checking the check when said picker j as the forward movement,

tween the plate and flange to space the Patented nea s, m le. 7

6 being preferably formed at. the angle be former from thelay a suitable distance to admit the head of a bolt 7 j which depends through the center of the plate... The ends fio of the plate. 3 are formed with a pair of braking P je ns 8 located on the lower f V 8 and contacting witl the flat lower faces of such projections, a stick checkingbari), 1

the center ofwsaid; bar having an openingfi throughwhicli the bolt? projects. A washer 1* 11 andZnutXlO are provided onthe lower end of bolt 7 and a sleeve 12 surrounds this bolt between the washer and bar 9,. thdup-gl per end of said"sleeve having" an external shoulder 13 aga 1nst wh1ch one end of a coiled spring 14; bears, the other end of said- 1 spring being pos tioned aga nst the washer 11 By this arrangement, it will be obvious that tightening of the nut10 will place I spring 14: under such tension as tohold the.

endsof the checking. bar 9. suitable frie tioiial contact with the braking projections 8, thusresisting the movement of said checkingbar to the reqiiired extent. Tightening:

of the nutalsobows the bar as depicted in Fig. 3 and thus places it under tension to assist in frictionally engaging the ends of said bar withthe braking projections 8.

The entire device is spaced to one side of j the path ofthepicker. stick 2 and the inner edge of bar 9 is formed with opposed slowly pitched cam surfaces 15and 15 one surface being projected into the path of the stick 2 1 whenthe other is retracted as will be clear from Figs. 1 and 2. During its proceeding 1 stroke, or rather near the completion of said stroke, the picker stick contacts with the cam surface 15 and thus rocks the checking bar 9 around its pivot, such action however being resisted by the friction brakes above.

described, so that the stick 2 is slowly brought to a standstill. Upon its receding or return motion the picker stick 2 contacts with the cam surface 15 which has been pro: jected by rocking ofthe bar in the manner set forth. Contact of the stick with said surface 15 rocks the bar 9 in the opposite direction against the action of thefriction brakes, so that the return movement of the i i picker stick is checked in the same manner From the foregoing, taken in connection with the accompanying drawing, it will be obvious that although my invention is of extremely simple and inexpensive nature, it Will be highly efficient and durable, particular emphasis being laid upon the location of the friction brakes at the ends of the check bar 9, this location being much more advantageous than a central brake due to the fact that a comparatively small amount of friction at the ends of the bar ill'resist the movement of the latter more effectively than a larger amount at the center thereof.

Since probably the best results are obtained from the several specific details shown and described, these details are preferably employed, but I Wish it understood that Within the scope of the invention as claimed, numerous minor changes may Well be made.

I claim:

1. A picker stick check comprising a bar extending longitudinally of the picker stick path and at one side thereof, said bar being pivoted centrally and having on one edge a pair of cam surfaces to be struck by the picker stick during its proceeding and receding strokes, Whereby to alternately rock said bar in opposite directions and friction brakes for the ends of said bar to resist said rocking movement. 7 2. A picker stick cheek comprising a bar extending longitudinally of the picker stick path and at one side thereof, said bar having on one edge a pair of cam surfaces to be struck by the picker stick during its pro ceeding and receding strokes, friction braking surfaces against which the ends of said bar bear, and means at the center of said bar for pivotally mounting it and constraining its ends to frictionally engage said braking surfaces.

3. A picker stick check comprising a supporting plate extending longitudinally of the picker stick path and at one side thereof, the ends of said plate having a pair of braking projections extending from one flat side of said plate, a stick-checking bar extending longitudinally of said plate and bearing at its ends against said projections, and means for pivoting the center of said bar to said plate and constraining the ends of the former to frictionally engage said projections, one edge of said bar having a pair of cam surfaces to be struck by the picker stick during its proceeding and receding strokes.

4:. A picker stick check comprising a stick-checking bar extending longitudinally of the picker stick path and located at one side thereof, the inner edge of said bar having opposed cam surfaces to be struck by the picker stick during its proceeding and receding strokes, a pair of friction braking bodies against which the ends of said bar bear, and means for pivotally mounting the center of said bar and for bowing the latter longitudinally to place it under tension, whereby the ends of said bar are held in frictional engagement with said braking body.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

WILLIAM CUR-RAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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