US962802A - Picker-check for looms. - Google Patents

Description

2 SHEETS-SHEET 1.

Patented June 28, 1910.

daiz'aka'.

s. TOYODA. PIGKEB CHECK FOR LOOKS.

APPLICATION FILED P318, 1909.

WITNESSES:

INVENTOR. By jby'acza 0. A TORNEY.

S. TOYODA.

PIGKEB. CHECK FOB LOOMS.

APPLICATION rILnn FEB. a, 1909.

962,802. Patented June 28, 1910.

2 SHEETS-SHEET 2.

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ZZZ 223 WI TNESSES:

INVENTOR.

SAKICHI TOYODA,

0F SHIMASAKI-CHO, NAGOYA, JAPAN.

PICKER-CHECK FOR LOOMS.

Specification of Letters Patent. Patented J 11119 28, 1910 Original application filed April 20, 1908, Serial No. 428,218. Divided and this application filed February 8, 1909. Serial No. 476,680.

To all whom it may concern:

Be it known that I, SAKIoHI TOYODA, a

subject of the Emperor of apan, residing "at Shimasaki-Cho, Nagoya, 1n the Empire of Japan, have invented certain new and useful Improvements in Picker-Checks for Looms, of which the following is a specification.

This invention relates to improvements in picker checks and is a division from my application filed April 20th, 1908, Serial Number 428,218.

One object of the inventlon 1s to provlde an improved picker check mechanism for loomswhereby the movement of the picker will be retarded priortO the limit of its movement so as to materially relieve the strap of strain when the picker is suddenly brought to a position of rest thereby.

The invention will be more fully described in connection with the accompanying drawings and will be more particularly pointed out and ascertained in and by the appended claims.

In the drawings :Fi re 1 1s a plan vlew, with parts in section, 0 an improved mechanism embodying the main features of my invention. Fig. 2 is a sectional view on line 2-2 of Fig. 1. Fig. 3 is a sectional View on line 33 of Fig. 1. Fig. 4 is a rear view of a portion of the apparatus shown in Fig. 1. Fig. 5 is a plan view of one end of a loom showing the application of my 1mproved form of picker check thereto. Fig. 6 is a view similar to Fig. 5 with parts removed and parts in section. Fig. 7 is a sectional view on line 77 of Fig. 5.

Like numerals of reference designate similar parts throughout the different figures of the drawmgs.

It will be seen by reference to Fig. 5 that the outer end of the shuttle engages a recessed portion 97 in the inner face of the picker block 43 and therefore in this form of the invention it is necessary to move the picker block 43 to the left when it is desired to discharge the operating shuttle or elevate it out of the shuttle and such displacement of the picker block 43 is effected automaticallyaccording to my invention by means which as shown consists of the following construction.

The strap for the picker bar 44 cushioning its movements in opposite directions is indicated generally at 104 and will be hereinafter described in detail. A frame 105 carries said strap and is provided with extensions 106 and 107 slidably mounted in guides 108 and 109 projecting rearwardly from the lay member 29. Said ides 108 and 109 also support a guide ro ll0 on which the picker block extension 42 slides. Extension 106 isprovided with a pin 111 adapted to project into and be operated by a cam slot 112 formed in a bar 113 which latter may be actuated in any desirable manner, not shown. Bar 113 at its upper end is guided by theframe 105 and the guide 108 and if desired an arm 108 may be provided to insure retention of the bar 113 in its working position when the frame 105 is moved to the left. When the bar 113 is raised it will cause the frame 105 to move to the left and when the bar 113 descends it will restore the frame 105 to the normal position shown in Fig. 7. Owing to a spring (not shown) which normally exerts a pull to the lefton the picker bar 44, shown in Fig. 5, said picker bar will normally occupy an extreme position to the left of the strap and when the frame 105 is moved toward the left the said spring will impart a movement of like extent to the picker bar 44 and the latter being connected with the picker block 43 will move the same tothe left out of engagement with the shuttle to free the end thereof from the recess 97 and will permit the shuttle to be raised.

An improved and novel form of the strap is provided for the picker bar 44 to arrestmovement thereof and the improved arrangement is designed to offer resistance to the picker bar prior to its limit of movement or prior to complete stoppage of the same. 7

Referring to Figs. 1 to 4 there are shown in the frame 105 two picker bar straps 155 and .156, one disposed within or inside of the other. Said stra s 155 and 156 are preferably in the form 0 loops and the same are 100 shown as being anchored by a pin 154, or equivalent means to one side of the frame 105. Preferably the straps 155 and 156 are adjustably anchored and therefore the straps are provided with slots through which the 105 in 154 passes and said slots are preferably formed. in the ends of said straps as indicated at 150. This adjustment not only permits of limiting the swing of the picker bar 44 but it also permits of adjustment of the 110 ;tra'p 156 so that the resistance offered thereby to the picker bar may be increased or decreased as desired. By means of this adjustment the throw of the picker bar may also be varied by adjusting the strap 155. The straps 155 and 156 are seated, at a point substantially opposite from the pin 15st, in a support 157 which is mounted on the frame 105. Said support 157 is provided with a U-shaped arm 158 which is so proportioned with respect to the thickness of the strap loops 155 and 156 as to retain the same in relatively close proximity or in abutting relation and also permit of relative movement of said straps. Said support 157 is provided with an extension 159 which is secured by screws 160 to the frame 105. Said support therefore constitutes means for loosely supporting said straps in operative relation with res ct to the picker bar 4A and for permitting relative movement of said straps with respect to each other. Means are provided, which means is preferably adjustable, for anchoring one of said straps and coiiperating with said support to retard movement of the other strap. As shown said means consists of a slide 161 which is grooved to fit upon a guidin extension 162 of the support 157. Sai extension 162 and said guide 161 are slotted to receive a bolt 163 whereb said slide may be anchored in its' adjusts position. The inner end of said slide 161 is bent downwardly and is provided with a bolt 16 1 which asses through the stra 155 and secures t e same rigidly to said slide. The head of said bolt 164 displaces the inner strap 156 inwardly and serves by separating said straps to increase the friction of strap 156 in its movement in the sup ort 158. By adjusting the slide 161 inward y the retardatlon of the strap 156 will be increased. It will be seen from the foregoing that the swinging icker bar will first engage the strap 156 and will move the same in the support 158 until the strap 156 is in engagement with the strap 155 at which point the picker bar 44 will be positively brought to a position of rest. The manner in which the stra 156 is supported will, as herein before escribed, permit said strap to move only under a frictional resistance dependent upon adjustment of the parts and such frictional resistance will serve in a eat measure to neutralize the force of the low imparted by the picker bar on the strap 156 an will result in relieving the strap 155, in great measure, of the strain usually imposed thereon. This will result in greatl prolonging the life of the strap 155 and wi I prevent frequent breakage which has heretofore been a great defect in-ap aratus of this character. It will be seen t at I have provided positively and straps for the picker bar.

yieldin g'ly acting strap, and a mounting for said auxiliary strap engaging the same to aiford resistance against movement thereof. I

3. A picker check comprising in combination, a picker bar for operating a shuttle, a primary strap limiting movement of said picker bar, a rigid mounting for said primary stra an auxiliary strap for neutralizing the b ow of said bar on said primary strap, and a mounting for said auxiliary strap frictionally engaging the same to retard movement thereof.

4. A picker check for looms comprising in combination, a picker bar for operating a shuttle, a primary strap in the form of a loop for limiting movement of said icker bar, a rigid mounting for said prlmary strap, an. auxiliary strap in the form of a loop dis osed within said primary strap and relative y restricted in size with respect thereto, and a mounting for said auxiliary strap engaging the same to afford resistance against movement thereof for neutralizing the blow of said bar on said primary strap.

5. A picker check for looms comprising in combination, a picker bar for operating a shuttle, a primary strap in the form of a loop limiting movement of said bar, oppositely disposed means for rigidly mountlng said primary strap, an auxiliary strap in the form of a loop disposed within said primary strap and relatively restricted in size with res ect thereto, said auxiliary strap being rigi l secured to one of said oppositely disposed istening means, and a support for said auxiliary strap cotiperatin with the other of said oppositely dispose means to frictionally grip said auxiliary strap and permit movement thereof for neutralizing the blow of said bar on said primary strap.

6. A picker check for looms comprising in combination, a picker bar for operating a shuttle, a primary strap in the form of a 100 limiting movement of said bar, means rigidly anchoring the ends of said primary strap, an auxiliary stra in the form of a loopdis osed within sai primary strap and relative y restricted in size with respect thereto, the ends of said auxiliary strap being anchored by said means, a support normally loosely holdin said primary and auxiliai'r'y straps, and a justable means rigidly secured to said primary strap and adapted to cooperate with said support to impose frictional resistance to movement of said auxiliary strap thereby serving to neutralize the blow of said bar on said primary strap.

7. A picker check for looms comprising in combination, a picker bar for operating a shuttle, straps for limitin movement of said bar, and mountings rigi 1y holding one of said straps and releasably holding another and permitting displacement of said releasably held straps in more than one direction.

8. A picker check for looms comprising in combination, a picker bar for operating a shuttle, a pair of straps for limiting movement of said bar, one of said straps bein reduced in size with respect to the other, an mountings rigidly holding the larger of said straps and releasably holding the smaller straps.

In testimony whereof Iafiix my signature in presence of two witnesses.

' N SAKICHI TOYODA. Witnesses:

EDWIN L. NEVILLE, GEORGE Pos'r WHEELER.

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