US2477100A - Feed mechanism for fastener setting machines - Google Patents

Description

. J. P. TRECIOKAS FEED MECHANISM FOR FASTENER SETTING MACHINES Filed March 22, 1946 Jul 2 1949 3 Sheets-Sheet 1' INVENTOR ATTORNEY Jamal 7/?500/(45 July 26, 1949. J. P. TRECIOKAS I 2,477,100

FEED MECHANISM FOR FASTENER SETTING MACHINES Filed March 22, 1946 s Sheets-Sheet 2 s NZ INVENTOR J4roa 7/?56/0/645 BY ,9M

ATTORNEY y 1949- I J. P. TRECIOKAS I 2,477,100

FEED MECHANISM FOR FASTENER SETTING MACHINES Filed March 22, 1946 s Sheets-Sheet 5 INVENTOR M4605 a 7756/0/(45 ATTORN EY the feed, slide or finger employed therefor;

Patented July 26, 1949 FEED MECHANISM 'FOR FASTENER .MA N

SETTING Jacob P. Trcciokas, Oakville, Conn assignor to I Y Scovill Manufacturing Company, Waterbury, Conn., a corporation of Connecticut 7 Application March 22, 1946, Serial No. 656,278

. 19 Claims. (01-213- This invention relates to machines for. setting or assembling buttons'or other fastener elements upon a supporting structure, such as a garment or a fabric or other support of any type or kind. More particularly, the present invention deals with the method and mechanism for actuating the fastener feed or delivery members of the machine in a manner to eliminate and dispense with hammer-like noise of-machines of the kind under consideration. Further, 1 the invention deals in the provision of a novel pick-up-and delivery element for delivering fastener devices to position for advancement in the machine by Still more particularly, the invention comprises a lever mechanism having a free action'to compensate for jamming or blocked movement of the feed fingers or slides employed to feed or deliver the fastening devices to operative position in the machine. The novel features of the invention will be best understood from the following descriptions when taken together'with the accompanyin drawings, in which certain embodiments of the invention are disclosed; and in which the separate parts are designated by suitable refer ence characters in each of the views, and in which: I

. V Fig. 1 is a side and sectional view of partof Fig. 4 is a front view of the machine with parts of the construction omitted, the view being enlarged with respect to the showing in Fig. 1; and

Fig. 5 is a section on the broken line 5--5 of Fig. 3.

The machine forming the subject matter of this invention is of the general type and kind disclosed in the Warner Patent 1,575,596 of March 2, 1926, and also as disclosed in my prior application Ser. No. 542,925 filed June 30, 1944, now Patent Number 2,406,516, granted; August 27, 1946. I

As my present invention is concerned primarily with the feed or delivery of the-fastener devices to fastener assemblage station, reference to the machine as a whole will be generally made and only such parts of the machine asdeal with my new conception will be'dealtwith specifically.

ConsideringFig. 1. of the drawing, Ill, represents the bedeplate of the machine arranged upon a suitable base or support .ll. Extending 11pwardly from the plate. lllisa suitableframe l2 on the upper: portion of which is pivoted, asseen at..l3,, anxoperatinglever, l4 .foractuating. the

. fastener. setting mechanism of the machine, generally shown at I5, in Fig. 1 of the. drawing.

, 'At [6 is shown part of.-a-'hopper fromwhich the button fastener devices, not. shown, are. fed downwardly throughya' guide track I! to a position to be. delivered. by :a delivery or feed finger or rod I8, as taught in my application aboveidentified, which delivers the button devices one at a time beneath the setting plunger or securing ,shaft of the machine which operates a crank 22,

having'an adjustable link coupling 23 with the rear end of the lever. 14, as at 24. Mounted for swinging movement upon the shaft 21 is an articulate type of hell crank comprising a long lever 25, and. a shorterlever 26, the lever 26 being provided with a 'pin fixed thereto, as at 21, and the other lever 25 being provided with .a circumferentially elongated'slot 28-engaged by the pin 21 to provide relative movement of the levers 25- 26 to the extent of the slot length. A spring 29 is. coupled with the end portions of the levers 25 and 26and serve to maintainthese levers in a position approximately ninety-seven degrees from each other while permitting wider separation of theIl'evers through the pin and slot construction. "I'his free relative movement against the action of the spring 28 compensates for obstructions that might be engaged by the button feed finger [8 or. the tack feed finger or slide 30, as will later more fully appear.

Pivoted to'the free end'portion of the short arm 25, as at 3|, is a. link 32, which is also pivoted to the main operating lever'l4, as .at 33. It will thus be seen that as the lever 14 .is actuated through the crank 22' and link 23, the levers 2B, 25 and 31 are also actuated in controllingforward and backwardmotions of the fingers 18-30 in'the'pick-up and feed of the button and tack to position at the securing or coupling station, identified, for exampleg as the'positi'on of the tack 34, as seen in Fig. 2 of the drawingpwhich would be a position "directly beneath a button air-7,106

4 forms the base for the guide channel 68 and upon which the slide 48 is adapted to operate. This plate 64 is supported upon a bracket H) which in turn is supported upon the bed-plate H) (see Fig. 1). Above the guide blocks 52-53 is a cover or retainer plate 66 for retaining the transfer element 55 in position.

The upper end of the lever 25 has a, bearing v portion 42, note Fig. 2, in which is rotatably mounted a block 43. Adjustably coupled with the block 43 is a coupling rod -44, as seen at 45, the forward end of the rod 44 being fork-shaped in form, as seen at 46, and pivoted to the fork end 46, as at 41, is a tack deliveryrfeedslide 48 having an upstanding rib the forward end of which includes the delivery finger 30. The forward end of the slide 48 proper-has a curved recess 49 to seat upon the head of the tack 34, as clearly seen at the left of Fig, f the drawing.

By reason of the fact that the length of the lever is greater than lever 31 from their respective pivots 2| and 38 totheir upper freeends,

and the relative differences in their lengths below said pivots, a greater feed is contributed to the finger than to the finger 18. It will also be apparent that the stop position for the advance stroke of the feed fingers l8 and 30 are independently controlled by separate adjusting means. Specifically the finger 3B is adjusted as at at the top of the lever 25, and the finger i8 is adjusted to predetermined position by the adjustable link 36 connected between the lower ends of levers 35 and 31.

Considering Figs. 2 and 3 of the drawing, at 5| I have shown the lower portion ofna'tack delivery chute into which tacks are fed by a hopper or other means, not shown, and thischute is disposed at right angles to the slide 48, and the suitable guides 52 and 53 provided for said slide, with the lower portion 5|" of the chute arranged in horizontal alinement with the slide and guides, as will appear from a consideration of Figs. 4 and 5 of the drawing.

The upper portion of the end 5|. of the chute is cut away, as seen at 54, note Fig. 2, to receive what I term a cut-off and carry element or lever 55. The element may also be considered as a tack pick-up and delivery element. It comprises a substantially V-shaped lever pivoted, as seen at 56, and having a notch or recess 51 therein for engaging the tack prong 58, as seen at Figs. 3 and 5 of the drawing.

Coupled with the element 55, as at 59, is a spring 60, also secured to one of the guides, as at 6|, which spring normally serves to. maintain the element 55 in a retracted position shown in Fig. 3 of the drawing while permitting the element 55 to be moved into the delivery position shown in Fig. 2, at which position the slide 48, including the finger 30 thereof, picks up the tack and advances it to the assembly or securing station, as indicated by the tack 34 at the left of- 2 of the drawing.

Attached to the underside of the, cut-off and carrier element 55 is a roller 62. that is adapted to be engaged by the advancing feed finger 3 0 for operating said element 55. Cut-out portions 63 are provided in the adjacent faces of the guide blocks 52-53 for the purposev of clearance for the roller 62 when the element 55. is disposed in s. O posite ope t n positions A plate 6.4

Provision is made for a relatively wide biased channel 61 and also a narrower arcuate channel 10 in the guide block 52, the channel 61 serving as a clearance for the head of the tack or fastener element, and the channel E0 serving as a clearance for the tack shank when moved from the lower end of the chute, note Fig. 3,

to the position in alinement with the channel 68 of the guides 52 and 53 and in front of the slide 48 and finger 30 thereon. As the slide 48 including the finger 3|) thereon advances forwardly, the roller 62 is supported in the path of the raised finger 30 of the slide 48, in Fig, 3, and is then moved into the recess 63 and held in such recess by the raised portion of the slide 48 of which the finger 3|! constitutes a part only. The

:finger 30 is retracted to clear the roller 62, at

which time, the spring 60 returns the element 55 to, the position shown in Fig. 3.

From the foregoing it will be apparent that the element 55, will pick-up only the lowermost tack in the chute, as in Fig. 3, and deliver it to the position in front of the slide 48. In this movement of the element, the rounded surface 69 on the element 55 holds the next successive tackin position, as in Fig. 2, ready to drop into the notch 51 when the element 55 is returned to the position of Fig. 3. It is to be noted that the arcuate surface 69 on the element 55 is struck as an arc with the pivot point 56 as a center so as to provide a uniform uniterrupted surface for supporting the foremost tack 34 in the end of the feed track 5|, and therefore, will preclude the tack elements in said track 5| from being jumped backwardly in said track when the element 5 5. is quickly returned to its tack pick-up position, as seen in Fig. 3. In this manner, an assurance is had of the pick-up and delivery by the element 55 of a single tack from the track 5| into the channel 68 in line with the feed slide 48. It; will be apparent that the channel 61 is in alinement with the lower end 5| of the chute 5|, and this alinement is maintained by a suitable- L-shaped bracket H; which is secured to the bracket L0 as by screws 1|, as is clearly seen in Fig, 5 of the drawing.

Returning new to Figs. 1 and 4 of the drawing, it will appear that on the shaft 2| is a cam 2| for moving a slide 12 downwardly, carrying a pair ofpivoted jaws 13 to separate said jaws against the action, of a spring 14. in the operation of setting or securing the fastener devices to a suitable support. Coupled with the slide 12 is a 15 which is pivoted to a lever 16, the latter being pivoted in the frame, as seen at 11, and carryin at its rear end a roller 18 operating upon the cam 2|. The forward end ofthe lever 1-6 has a hand portion 19 by means of which the jaws 13 may be separated by hand whenever desired. A spring coupled with the frame and to the lever 16, note Fig. 1, holds the jaws 13'; in closed'position and the roller 'Hiupon the surface of the cam- 2| The lever 31 has a downwardly directed handle portion 8|, part of which is broken away in Fig. 1., to facilitate manual operation of both of the fingers, |.8:-30:- to manually actuate the fingers 7:5,Within; the; limits. of? the pin.- and slot construction 21-28, and which operation may be effected without turning over the pulley 83 by hand or by operating the machine through an entire cycle of operation.

The guide plate 52 includes a front removable section 52', held in place by a knurled head screw 82, note Fig. 2, for gaining quick access to the tack guide channel in the event of any jamming, by reason of the structureof the tack delivery station, the delivery chute 5|, delivery element 55 and slide 48, including the finger 30, become readily accessible. E

. a The general structure of the frame I2 can be understood from a consideration of Figs. 1 and 2 of the drawings, taken with theshowing in Fig. 4. It will appear from Fig. 4, that the finger I8 is beneath the setting plungermechanism l5, at an angle, to deliver the button fastener devices directly above and in alinement with the positioned tack devices 34.

In Fig. 1 of the drawing, I have indicated in dot and dash lines part of the drive for the shaft 2|, for example 83 shows in part a pulley driven from a belt 84, from a motor shaft, not shown. At 85 is indicated a chain and sprocket drive, from the shaft 2| to a shaft 86, from which there is a belt or other drive to the hoppers and other mechanism of the machine. No further description of this mechanism will be made, as it forms no part of the present invention.

' In Fig. 1, I have shown the levers and 26 in a full line position where the fingers l8 and are fully advanced, and in dot and dash lines, I have shown, in part, the position'of the levers 25 and 26 when the fingers are fully retracted. In the operation of the machine the crank 22 operates the main lever I through the link 23 to actuate the plunger or other setting mechanism I5 to set or secure the fastener parts upon a suitable support. Operating off of the main lever 14 is the link 32 which in turn operates the levers 25 and 31. In more detail the link '32 is connected directly to the arm '26 which is a part of the articulate bell crank lever 2526. In the normal operation of the machine the articulate levers 25 and 26 will remain in the same relative position to each other, while pivoting around the shaft 2| with the pin 21 carried by the lever 26 normally engaged in the left end of slot 28 in lever 25 by reason of the tension sprin 29. The lower extension of the lever 25 in turn actuates the lever 31 through the link 36. Movement of the levers 25 and 31 result in the forward and backward movements contributed to the fingers l8 and 30. If perchanceone or both of the feed fingers l8 and 30 should jam during their respective feeding operations, by reason of the particular connection between levers 25 and 26 as explained above, the connected link 32 and lever 26 can continue'through with their stroke while the lever 25 and 31 will remain at rest resulting in no damage to the motion. When the setting or securing mechanism [5 is in the raised position, the fingers l8 and 38 are in their fully advanced position, shown in full lines in Fig. 1. Conversely, when the mechanism I5 is in its lowermostv position, having completed the attachment of the fastener devices to the support, the levers 25, 26 and 31 assume the dot-dash position illustrated in Fig. 1,the pivot of the link 36 with the arm 35, as at 81, having moved to the position indicated in dot-dash lines, whereas the pivot of the link 36 with the lever 31, as at 88, having also moved .tocthe. dot-dash position-"shown: in said figure,

"part of the lever 31. also being indicated in its slight as compared with the movement of the finger 30. In these dot-dash positions, the two fingers are now in a position ready to pick-up and deliver other fastening devices to the fixing or securing station as the mechanism I5 is again raisedand returned to the full line position of Fig. 1, which completes a cycle of operation of the machine. 7

From the foregoing, it will be apparent that the entire operation of the machine is a quiet link and lever operation dispensing with all pounding that is occasioned by the use of cams andcam followers, and the motion or drive is a constant crank drive which is a smooth positive action, thus machines of the type and kind will operate very quietly and yet positively, means being provided to adjust feed of the two fingers to maintain the proper and desired relative alinernent'of the fastening devices in the machine. Further the free and independent movement compensates for improper functioning of the fingers and prevents jamming or destruction to the machine, this result being accomplished without interfering with the otherwise positive functionin of other machine parts.

By tying up the operation of the element 55 with the actuation'of the slide 48, a positive and more or less foolproof delivery of tack elements in front of the finger 30 is assured. If for any reason the tack transfer element .55 should become accidentally jammed and fail to deliver a tack into proper position, or if perchance either one of the fastener elements should become jammed anywhere between the ends of their respective feed track to their setting station, then both feed fingers I8, 30 would be checked from further movement through the articulate construction of the bell crank lever 25, 26 and the ability of the lever 26 to continue to move relative to lever 25 against the influence of the spring 29. By this construction the other mechanism of the machine cancomplete its cycle of operations without danger of breaking the machine, after which the jammed fastener element can be removed or the jammed mechanism corrected.

fastener element to predetermined position in the machine, a'drive shaft, a crank actuated by said shaft and operating a main lever pivoted in the machine, said main lever actuating fastener setting mechanism of the machine, a lever'for actuating each of said fingers, meansadjusting said finger leversto control startingand ending position thereof, a supplemental lever having a link coupling with said first named-main lever, and a lost motion connection between'the supplemental lever andone of said finger levers.

"2. In a fastener setting machine, a pair of fingers, each finger being adapted to deliver a fastener element to predetermined position in the machine, a drive shaft, a crank actuated by said shaft and. operating a main lever pivoted in the machine, said main lever actuating fastener setting mechanism of the machine,v a lever for actuating each of said fingers, means adjusting said finger levers to control starting and ending position thereof, a supplemental lever having a link coupling with said first named main lever, a lost motion connection between thesupplemental lever and one of said fingerlevers, and a spring coupling the supplemental lever with one of said finger levers maintaining said connection in drive position.

3. In a fastener setting machine, a pair of fingers, each finger being adapted to'deliver a fastener element to predetermined poesition in the machine, a drive shaft, a crank actuated by said shaft and oprating-a main lever pivoted in the machine, said main lever actuating fastener setting'mechanism of the machine; a lever for actuating each of said fingers, means adjusting said finger levers to control starting and ending position thereof, a supplementallever having a link coupling withsaid first named main lever, a

lost motion connection between the supplemental lever and one of said finger levers, a spring coupling the supplemental lever with one of said finger levers for maintaining said connection in drive position, and one of said finger levers having a 'hand' grip portion facilitating manual operation thereof. r I

i. In fastener setting machines employing a pair of fastenerdelivery fingers-withmeans for guiding said fingers inthe machine to deliver fasteners to ali-ned position at a setting station of the machine, a pair of levers pivotally coupled at one end with the respective fingers, said levers being extensions at the other ends thereof, means adjustably coupling said extensions whereby actuation of one lever is transmitted to the other lever, a supplementallever yieldably coupled with one of the first'namedlevers, and means for imparting apositive reciprocating motion to the supplemental lever in actuating the finger levers in the feed of said fingers back andforth in the machine.

5. In fastener setting machines employing a pair of fastener delivery fingers-with means for guiding said fingers in the machine todeliver fasteners to aligned position at a setting station of the machine, a pair of levers pivotally coupled at one end with ,therespective-fingers, said levers having extensionsatthe-otlier ends thereof, means adjustably coupling said extensions whereby actuation of one lever is transmitted to the other lever, a supplemental lever yieldably coupled withone'of thefirst named levers, means for imparting a positive reciprocating motion-to the supplemental lever in actuating the finger levers in the feed of said fingers hack and forth I in the machine, and-means providing free movement of said finger levers/with respect-tothesupplemental lever through said .yieldable coupling. 6. In fastener setting. machines employing a pair of fastener delivery fingers with means for guiding said fingers in the machine. .to deliver fasteners to aimed-position at a setting station .of the machine, a pairof leverspivotal-lyi coupled at one end with. the respectivefingers, saidlevers having extensions. at the other ends thereof, meansadi-ustably coupling saidextensionswhereby actuation of one-lever is. ltransmitteci'cto the otherlever, ,a supplemental lever vieldahly coupled-with one of the firstpamedlevers meansfor i parting ,a gpos t ve eciproeatin onoxide-the supplemental lever in actuating the finger levers in the feed of said fingers 'back and forth in the machine, means providing free movement of said finger levers with respect to the supplemental lever through said yieldable coupling, one of said fingers comprising a slide operating in a guide tract, and the front end of said slide being adapted to engage a fastener in said guide track in delivery of said fastener to the-setting station.

7. 'In fastener setting machines employing a pair of fastener delivery fingers with means for guiding said fingers in the machine to deliver fasteners to alined position at a setting station of the machine, a pair of levers pivotally coupled' at one end with the respective fingers, said levers having extensions at the other ends thereof, means adjustably coupling said extensions whereby actuation of one lever is transmitted to the other lever, a supplemental lever yieldably coupled with one of the first named levers, means for imparting a positive reciprocating motion to the supplemental lever in actuating the finger levers in the feed of said fingers hack and forth in the machine, means providing free movement of said finger levers with respect to the supplemental lever through said' yieldable coupling, one of said fingers comprising a slide operating in a guide track, means comprising a chute for delivering fasteners one at a time into position in the guide track for engagement by the front .end of said slide in delivery of fasteners to the setting station. 7

8. In a fastener setting machine having a pair of chutes for delivering independent fastener elements to pick-up position in the machine, adelivery finger for eachchute, each finger having a lever for actuating the same, means adjustably coupling said levers whereby actuation of one lever will simultaneously operate the other lever, a drive lever for operatingone of said levers, and means for actuating the drive lever for imparting back and forth movement. to said fingers in delivery of fasteners from the chutes to a setting station in the machine.

9. In a fastener setting machine having ,a pair of chutes for delivering independent fastenerelements to pick-opposition in the machine, adeliVery finger for each chute, each finger having a lever for actuating the same, means adjust ably coupling saidlevers whereby actuation of one lever will simultaneously operate the other lever, a drive lever for operating one of said levers, means for actuating the drive lever for imparting back and forth movement to said lingers in delivery offasteners from the chutes to a setting station in the machine, and said drive lever having a free coupling with the lever driven thereby, whereby both of said finger levers are-free to move independent of the drive lever withinpredeterminedlimits.

10. 'Ina fastener setting machine having a pair of' chutes for delivering independent fastenerelements to pick-up position in the machine, a delivery finger for each chute, each finger having a lever for actuating the same, means adjustabl coupling said levers whereby actuationofoneleverawill simultaneously operate the other lever, a drive :lever for operating one of said levers, means for actuat'ing the drive lever: .lfor imparting hack and forth movement to said fingers in delivery of fasteners from the chutes ,to a setting station in the machine, said drive lever having a freecouplmg with .the lever driven thereby, wherebyboth of said finger levers 7 5 arwtreemo moveuindependentof the drive :l'ever within predetermined limits, and a spring normally maintaining the drive and driven levers in predetermined relationship to each other.

11.111 machines employing a pair of slides, a lever having a swivel coupling with each slide, means coupling said levers whereby movement of one lever is transmitted to the associate lever through said coupling means, and means comprising a third lever having a yielding coupling with one of the first named levers for actuatin said first named levers to impart back and forth movement to said slides.

12. In machines employing a pair of slides, a lever coupled with each slide, means coupling said levers whereby movement of one lever is transmitted to the associate lever through said coupling, means comprising a third lever having a yielding coupling with one of the first named levers for actuating said first named levers to impart back and forth movement to said slides, and said yielding coupling permitting independently moving the first named levers a predetermined distance with respect to said drive lever.

13. In machines employing a pair of slides, a lever coupled with each slide, means coupling said levers whereby movement of one lever is transmitted to the associate lever through said coupling, means comprising a third lever having a yielding coupling with one of the first named levers for actuating said first named levers to impart back and forth movement to said slides, said yielding coupling permitting independently .moving the first named levers a predetermined distance with respect to said drive lever, and means adjusting the stroke of the slides in the machine and with respect to each other.

14. In machines employing a pair of slides, a lever coupled with each slide, means coupling said levers whereby movement of one lever is transmitted. to the associate lever through said coupling, means comprising a third lever having a yielding coupling with one of the first named levers for actuating said first named levers to impart back and forth movement to said slides, said yielding coupling permitting independently moving the first named levers a predetermined distance with respect to said drive lever, means adjusting the stroke of the slides in the machine and with respect to each other, and the coupling between said levers being such as to vary the forward and rear end point of travel of one slide with respect to the other slide.

15. In a fastener setting machine employing a fastener delivery slide for delivering fasteners to a setting station in the machine, said slide having an elongated guide track, means for delivering alined fasteners laterally to one side of said track, an element operating in said track for picking-up and delivering fasteners one at a time to a position in the track for engagement by said slide, and said element having means engaged by the slide for moving the element into fastener delivery position.

16. In a fastener setting machine employing a fastener delivery slide for delivering fasteners to a setting station in the machine, said slide having an elongated guide track, means for delivering alined fasteners laterally to one side of said track, an element operating in said track for picking-up and delivering fasteners one at a time to a position in the track for engagement by said slide, said element having means engaged by the slide for moving the element; into fastener delivery position, and a spring for returning the element to position to pick-up a next successive fastener.

17. In a fastener setting machine employing a fastener delivery slide for delivering fasteners to a setting station in the machine, said slide having an elongated guide track, means for delivering alined fasteners laterally to one side of said track, an element operating in said track for picking-up and delivering fasteners one at a time to a position in the track for engagement by said slide, said element having means engaged by the slide for moving the element into fastener delivery position, a spring for returning the element to position to pick-up a next successive fastener, and said element having means supporting alined fasteners in said side delivery means when the element is in the first named or delivery position.

18. In fastener setting machines, a fastener delivery chute, a swinging element at the discharge end of the chute, a fastener feed finger slidably mounted in the machine adjacent the discharge end of the chute, a guide channel for said finger, said element being actuated by the finger to deliver a fastener from said chute into the channel forwardly of said finger as the finger is advanced in the channel, and said element having means supporting fasteners in the chute when said element is moved into delivery position.

19. In machines employing a pair of slides, a lever for actuating each slide, means coupling said levers, whereby movement of one lever is transmitted to the associate lever through said coupling means, and means comprising a third lever having a yieldable coupling with one of the first named levers for actuating said first named levers to impart back and forth movement to said slides.

JACOB P. TRECIOKAS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 195,715 Kellogg Oct. 2, 1917 1,836,887 Veillette Dec. 15, 1931 1,879,895 Fenton Sept. 27, 1932 2,262,150 Straw Nov. 11, 1941 2,406,516 Treciokas Aug. 27, 1946 Certificate of Correction Patent No. 2,477,100 July 26, 1949 JACOB P. TRECIOKAS It is hereby certified that errors appear in the printed specification of the above numbered patent requlring correction as follows:

Column 7, line 16, for poesition read position; line 38, for being read having;

and that the said Letters Patent should be read With these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 17th day of January, A. D. 1950.

THOMAS F. MURPHY,

Assistant Commissioner of Patents.

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