US2848017A - Picker stick check - Google Patents

Description

Aug. 19, 1958 C. M. SMITH PICKER STICK CHECK Filed Jan. 19, 195e 3 Sheets-Sheet 1 M ATTORNEYS Aus- 19, 1958 c. M. SMITH 2,848,017

PICKER STICK CHECK Filed Jan. 19, 1956 5 Sheets-Sheet 2 1 N VEN TOR 55:15 M S21/rd f? d J3 BY ATTORNEYS I Aug. 19, 1958 c. M. sMx'rH 2,848,017

' PICKER STICK CHECK A Filed Jan. 19, 195e s sheets-sheet s INVENTOR MMATTORNEW United States Patent O 2,848,017 PICKER STICK CHECK Cossie M. Smith, Columbus, Ga. Application January` 19, 1956, Serial No. 560,204

1 Claim. (Cl. 139-165) The present invention relates to picker stick checks, and more particularly, to checks arresting the motion of a picker stick as it reaches the opposite ends of its movement.

A primary object of the invention is to provide a check device for a picker stick which will slow the movement of the stick prior to the terminal stop thereof to protect the stick against damage in striking the lay.

In looms of the Draper type, a pair of picker sticks are mounted at opposite ends of the lay for causing the shuttle to move from one end of the loom to the other. The picker stick, unlessretarded before reaching the end of its travel in the picker stick guide, will strike the end of the guide and become damaged. While many checks have been developed and used in attempting to solve this problem, the present invention has in an improved manner completely eliminated the possibility of damage to the picker stick without materially increasing the cost of the loom.

Another object of the invention is to provide a picke stick check of the class described above in which the retarding elfect of the check on the picker stick is readily and substantially adjustable so that the check can be utilized under widely varying conditions.

A further object of the invention is to provide an arresting check for picker sticks in which the picker stick is retarded in its movement in both directions of its movement.

A still further object of the invention is to provide a picker stick check of the class described above which will be inexpensive to manufacture, easy to install and adjust, and in which worn or damaged parts can be readily replaced.

Other objects and advantages will become apparent in the following specification when considered in the light of the attached drawings, in which:

Figure 1 is a front elevation of a Draper type loom showing the checks applied to the left and right picker sticks with the loom shown in dot-and-dash lines.

Figure 2 is a fragmentary front elevation of the picker stick check on theright hand of the loom illustrated in Figure 1.

Figure 3 is a fragmentary rear elevation of the picker stick check illustrated in Figure 2.

Figure 4 is a fragmentary horizontal cross-section of the check mechanism taken along the line 4-4 of Figure 3, looking in the direction of the arrows.

Figure 5 is a fragmentary vertical cross-section taken along the line 5-5 of Figure 2, looking in the direction of the arrows.

Figure 6 is a fragmentary end elevation of the picker check mechanism illustrated in Figure 2.

Figure 7 is an enlarged fragmentary horizontal crosssection taken along the line 7-7 of Figure 2, looking in the direction of the arrows.

Figure 8 is a fragmentary front elevation of the picker stick mechanism illustrated at the left hand end of the loom shown in Figure 1.

2,848,017 Patented Aug. 19, 1958 ICC Referring now to the drawings in detail wherein like reference numerals indicate like parts throughout the several gures, the reference numeral 10 indicates genen ally a Draper type loom. The loom 10 has a horizontally extending lay 11, a picker stick 12 at the right end of the machine, a picker stick 13 at the left end of the machine, and means generally indicated at 14 for oscillating the picker sticks 12 and 13.

The lay 11 at the right hand end of the loom 10 is provided with a box plate 15. A picker stick guide 16 is secured beneath the box plate 15 and to one side thereof by means of a bolt 17. The picker stick guide 16 has a spindle discharge chute 18 formed on one end thereof for guiding the spent spindles.

The picker stick 12 extends upwardly through the box plate 15 rearwardly of the picker stick guide 16 and is adapted to move transversely of the loom 10 from a position as illustrated in Figure 2 to a position to the left thereof behind the spindle chute 18. The picker stick 12 is adapted to actuate a shuttle (not shown) in a couventional manner.

A plate 19 is secured to the picker stick guide 16 by any suitable means such as welding or the like. The plate 19 extends horizontally and has a pair of elongated slots 20 and 21 formed therein. A brake adjustment support plate 22 is secured to the plate 19 and depends therefrom adjacent the mid point of the plate 19.

A mounting bar 23 is secured to the lay 11 rearwardly of the picker stick guide 16 and spaced therefrom. The mounting plate 23 is provided with a pair of slots 24 and 25 extending longitudinally thereof. A brake support yoke 26 is secured to the mounting plate 23 by means of a bolt 27 extending through a base 28 on the yoke 26 and through the slot 25 in the mounting plate 23.

The lower end of the yoke 26 is enlarged as at 29 and provided with a vertically extending slot 30. A brake support yoke 31 is provided with a base 32 secured to the plate 19 by means of a bolt 33. The yoke 31 is enlarged as at 34 and carries a vertical slot 35 extending therethrough with the slot 35 being in the same dimension as the slot 30 and parallel thereto.

A brake arm 36 is provided with a base 37 which is secured to the mounting plate 23 by means of a bolt 38 extending therethrough. The lower end of the brake arm 36 is provided with a pair of right angularly vertically spaced apart cylindrical bosses 39 and 40. A brake plate 41 is engaged over the bosses 39 and 40 and is adapted to reciprocate toward and awayfrom the brake arm 36. A brake arm 42 provided with a base 43 is mounted to the plate 19 by means of a bolt 44 passing therethrough. A pair of cylindrical bosses 45 and 46 extend right angularly from the brake arm 42 in parallel vertically spaced apart relation.

A brake plate 47 identical in every respect to the brake plate 41 is adapted to reciprocate toward and away from the brake arm 42 on the bosses 45 and 46. A brake adjustment support plate 4S is secured to the central portion of the mounting plate 23 and depends therefrom in parallel relation to the brake adjustment support plate 22.

A leather loop 49 extends through the slots 30 and 35 of the yokes 26 and 31 and between the bosses 39 and 40 and the bosses 45 and 46 particularly as illustrated in Figure 4. A laminated leather block 50 is secured in the closed end of the leather loop 49 by means of a fastening element 51. A laminated leather block 52 is secured in the open end of the leather loop 49 by means of a fastening element 53.

The picker stick 12 is positioned within the leather loop 49 between the laminated leather blocks 50 and 52 and is adapted to reciprocate therein striking the leather blocks 50 and 52 and moving the leather loop 49 3' transversely of the loom 10. Brake plates 41 and 47 are engaged over the leather loop 49, as illustrated in Figure 4, and are adapted to bear thereagainst.

A spring 54 is mounted on a pivot plate 55 by means of bolts 56 and 57 extending into the brake adjustment support plate 48. The spring 54 extends outwardly and engages the brake plate 41 biasing the brake plate 41 toward the leather loop 49 thus providing a frictional drag on movement of the leather loop 49. The brake plate 47 is engaged over the leather loop 49 and bears thereagainst. A spring 58 is secured to a pivot plate 59 and to the brake adjustment support plate 22 by means of bolts 60 and 61.

In Figure 8, a front elevation illustrates the mechanism for checking the picker stick 13 at the left end of the loom 10. The lay 11 at this end of the loom is slotted to permit the picker stick 13 to reciprocate and carries on the underside thereof'a pair of mounting plates 62 which extend longitudinally of the lay 11 in parallel spaced apart position. The mounting plate 62 is constructedidentically to the mounting plate 23 and has a brake adjustment support plate 63 depending from the mid portion thereof.

A pair of spaced apart yokes 64 are secured to the mounting plate 62 and are provided with an enlarged4 portion 65 identical to the enlarged portion 29 of the yoke 26. The yoke 64 is identical in every respect to the yoke 26 and has a base 66 through which a mounting bolt 67 extends to secure the yoke 64 to the mounting plate 62. The opposite end of the mounting plato carries a pair of spaced brake arms 68 which are identical in every respect to the brake arms 36 having a base 69 through which a securing bolt 70 extends to secure the brake arm 68 to the mounting plate 62.

Brake plates 71 mounted on bosses 72 and 73 in the same manner as the brake plate 41 is mounted on bosses 39 and 40 engages a leather loop 74 which is identical to the leather loop 49 and is looped about the picker stick 13. A tension spring 75 engages the brake arms 71 to maintain the tension thereon. A pivot plate 76 is positioned between the spring 75 and the brake adjustment support plate 63. Securing bolts 77 and 78 secure the spring 75 to the brake adjustment support plate 63.

In the use and operation of the invention, the picker stick 12 oscillates in the loom 10 in the normal manner and engages the leather blocks 50 and 52 of the leather loop 49 at opposite ends of its stroke, moving the leather loop 49 along with the picker stick 12 until the picker stick 12 engages the end of the box plate 15. The brake plates 41 and 47 in engagement with the leather loop '4 49 creates a drag thereupon and resists the movement of the leather loop 49 hence retarding the movement of the picker stick 12.

The springs 54 and 58 can be adjusted to increase the tension o-f the brake plates 41 and 47 by loosening the bolts 57 and 61 and tightening the bolts 56 and 60 thus rocking the pivot plates and 59 moving the springs 54 and 58 closer to the brake plates 41 and 47. Obviously, reverse movement of the bolts 56, 57, and 61 will decrease the tension on the springs 54 and 48.

The brake arms 36 and 42 and the yokes 26 and 31 are longitudinally adjustable with relation to the lay 11 and to each other so that the controlled stroke of the picker stick 12 may be fully adjusted to accommodate for changing conditions.

The construction illustrated in Figure 8 operates identically to the construction illustrated in Figures 2 through 7 merely illustrating a mounting structure for mounting the check on the left hand picker stick in the absence of the box plate 15 found at the right hand end of the loom 10.

Having thus described the preferred embodiment of the invention, it should be understood that numerous modilications and structural adaptations may be resorted to without departing from the scope of the appended claim.

What is claimed is:

A picker stick check for looms comprising a exible picker stick encompassing elongated loop, said loop hav'- ing spaced parallel sides, laminated leather blocks secured in opposite ends of said loop, spaced aligned guides supporting one side of said loop, spaced aligned guides supporting the opposite side of said loop, a brake plate carried by one guide on each side of said loop and arranged to contact said loop, and 'adjustable resilient means engaging each of said brake plates biasing said brake plates into frictional engagement with said loop whereby movement of said loop through side guides is retarded, said resilient means comprising a generally at spring arm bearing against said brake plate.

References Cited in the file of this patent UNITED STATES PATENTS 1,328,018 Snow Jan. 13, 1920 2,004,031 Bullard June 4, 1935 2,045,978 Burrow June 30, 1936 2,351,188 Brown June 13, 1944 2,393,148 Crocker Jan. 15, 1946

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