US2735567A - carpinella - Google Patents

Description

4 Sheets-Sheet 1 Filed May 10, 1952 INVENTOR a mm mm Po 1 A M J.Y 18 m 1955 M. J. CARPINELLA 2,735,567

FASTENER ATTACHING MACHINE Filed May 10, 1952 l 4 Sheets-Sheet 2 INVENTOR Michael J. Cqr inella ATTORNEY 1956 M. J. CARPINELLA FASTENER ATTACHING MACHINE 4 Sheets-Sheet Filed May 10, 1952 INVENTOR Michael J. Cur inella ATTORNEY United States Patent O F FASTENER ATTACHING MACHINE Michael J. Cnrpinella, Waterbury, onn., assignor to Scovill Manufacturing Company, Waterbury, Conn, a corporation of Connecticut Application May 10, 1952, Serial No. 2557,08].

4 Claims. (Cl. 218-6) This invention relates to fastener attaching machines for setting snap fastener elements or buttons upon garments.

One object of this invention is to provide a fastener attaching machine which is divided into two major units of a character wherein one section of the machine can be built as a separate unit in one plant and the other section built as a separate unit in some other plant, or the units can be built in different parts of the same plant. The units when built as separate assemblies may then be brought together attached to a common base and by making a few simple connections between the two units produce quickly and in an economical manner a complete fastener attaching machine.

Heretofore, machines of this character employed essentially a setting plunger, two feed slides, rotating hoppers to orient the fastener elements into feed tracks leading to the setting station, all of which movable elements were operated by separate linkage, or other mechanical connections from a common drive shaft. More particularly the object of my invention is accomplished by incorporating into the plunger head unit of the machine the setting plunger and two feed slides all operated from levers contained as a part of the plunger head unit. More particularly the plunger and feed slides are operated by a single lever so as to permit of a single link with the drive unit. The drive unit consists of the main drive shaft with a clutch control driven from a source of power, and wherein there is only a single movable connection between the drive unit and the plunger head unit.

One of the advantages of dividing a fastener machine of the above character into two separate units is to expedite the manufacture of the machine, and also to facilitate the changeover of the machine from one type of fastener to another.

Another object of the invention is to operate the two fastener element feed slides from a common lever mounted on the same unit as the feed slides and wherein there are independent adjustable means for each of the feed slides.

Further objects of the present invention will in part be obvious and others will be pointed out hereinafter in the specification in connection with the accompanying drawing which illustrates the preferred form of the present invention.

Fig. 1 is a right elevational View in part and a sectional view in part of the complete machine, the view taken along the line 11 of Fig. 3.

Fig. 2 is a left elevational view of chine similar to Fig. i, Fig. 3.

Fig. 3 is a plan view of the same.

Fig. 4 is a front elevation of the same.

Fig. 5 is a side view of the adjustable connection for the upper slide, and

Fig. 6 is a side view of the adjustable connection for the lower slide.

The setting unit mechanism and the drive unit mechanism can be made as complete assemblies by themselves,

the complete mathe view taken along line 2-2 of 2,735,567 Patented Feb. 21, 1956 after which the drive unit and the setting unit can be attached to a common support or standard, properly aligned and tied together with stabilizing brackets and having only a single drive link operating between the two units.

Considering now the details of the drawings, the drive unit is designated generally by the letter A and the fastener setting unit by the letter B, both of which units may be secured to a common support 10.

Drive unit The drive unit A comprises a bearing block 11 having spaced bearings 11a in which a main drive shaft 12 is journaled.v An eccentric 13 is keyed to shaft 12 and drives a pitman link 14 having the usual strap bearings 15 about said eccentric 13. One end of the main shaft 12 supports a conventional one-way clutch 16 of well known construction used on fastener setting machines and driven by a fly wheel 17 which in turn may be belt-driven from any suitable source of power.

Fastener setting unit The fastener setting unit B consists of a support frame or housing 26 having a base 21 resting upon and suitably bolted to the support 10. The frame is formed with an integral head part 22 within which is slidably fitted a setting plunger 23. The frame 20 is preferably of gooseneck shape so formed as to provide a relatively deep clearance in back of the setting station of the machine, generally known as a deep-throat machine, which is for the purpose of accommodating garments having fasteners set thereupon at a considerable distance from the edge of the garment. The upper end of the setting plunger 23 has a suitable connection with one end of a relatively short bell-crank lever 24 pivoted on a stub shaft 25 mounted in bearing lugs 26 extending upwardly from the housing 20. The opposite end of the bell-crank lever 24 is connected to the pitman link 14 as by means of a bolt 27.

Upper slide mechanism in feeding one part of a fastener element to the setting plunger 23 a. gravity feed track 28 (see Fig. 4) is provided that directs the elements from a hopper of conventional construction, not shown, to a pusher slide bracket 25 attached to the head 22 of the housing 20 as by screws 3t). A pusher slide 31 operates in a feed track 29a provided in the slide bracket 29 to feed the elements one by one to the jaws of a receiving unit 32 mounted on the end of the setting plunger 23. The slide 31 is connected through an adjusting unit 33 to a link 34 which in turn is connected to the intermediate part of a slide operating lever 35 at pivot 36. The lever 35 is pivoted to the housing 2% as at 37 and extends a short distance thereabove where it is connected to one end of a lostmotion linkage 33. The opposite end of the linkage 38 is connected to the bell-crank lever 24 as by a pivot bolt 39.

Specifically the lost motion linkage 38 consists of cylindrical rod 384: having an integral head 3% at one end by means of which the linkage 38 is pivotally connected to the bell-crank lever 24 by bolt 39. A compression spring 380 surrounds the rod 38a and is compressed between the head 38b and a bearing block 33d through which rod 38:: is slidable. The block 38d is connected to the upper end of the slide operating lever 35 through pivot pin 73. The block 384! can be adjusted along the rod 38a by nuts 38s on a threaded portion of said rod to vary the tension force of the spring 38c. From this con-- struction it will be evident that if the lever 35 or the slides 31 and 56 should become stuck, the rod 38a would slide through the block 38d and only further compress the spring 38c rather than to impart a direct drive force to.- the stuck parts.

In describing more of the details of the adjusting units 33 for the upper slide 31 reference is made to Figs. 2 and 5. The unit 33 consists of a yoke 40 having drop connection with a lateral pin 41 projecting from one side of the slide 31. The yoke 49 has a recessed channel 42 in one side wall within which is slidably fitted an adjusting bar 43 connected to one end of the link 34 as at 43a. The bar 43 is moved longitudinally relative to the yoke 40 by an adjusting screw 44 rotatively mounted in a bifurcated lug 45 on yoke an and having threaded engagement with one end of the adjusting bar Rotation of the screw 44 will move the bar relative to the yoke 40 and obviously adjust the position of the slide 31 relative to the link 34. After the proper adjustment is made the bar 43 may be locked to the yoke 46 by means of the clamp screw 46.

Lower slide mechanism In order to feed another element complemental to the element fed through the upper feed track into the setting station of the machine, another hopper of conventional construction, not shown, will direct the second element into the gravity feed track 48 for guiding said element to a lower pusher slide bracket 49 mounted on the base 21 of the setting unit housing 20. A pusher slide 50 operates in a bracket 49 for feeding said element in proper timed relationship to a receiving jaw unit 51 slidably mounted on a forming die 52 against the influence of a spring 53. The die 52 is detachably secured in the usual manner to the base 21.

Motion is imparted to the slide 50 from the lever 35, and specifically the lower end of the lever 35 is formed with a gooseneck bend 35a which is connected to a lug 50a on slide 50 through an adjusting unit 54. The details of this unit are best shown in Fig. 6 and consist of a yoke 55 pivoted to the end of the lever bend 35a. The yoke 55 is provided with a longitudinal channel 56 for adjustably receiving a sliding bar 57, one end of which has an offset lug 57a in turn pivotally connected to the slide lug 50:: as at 58. The slide bar 57 is adjusted relative to the yoke by means of an adjusting screw 59 rotatably mounted in a lug 6% formed as a part of the yoke 55 and having threaded engagement in one end of the sliding bar 57. When the proper adjustment is made of the bar 57 to the yoke 55 said bar and yoke may be held in adjusted position as by a clamp bolt 61.

In machines of this character it is necessary to rotate the hoppers. In order to rotate such hoppers from the main drive shaft I provide a sprocket and chain drive connection. A driver sprocket 62 is keyed to the main drive shaft 12 and operates a link chain 63 riding over such sprocket 62 and to an idler sprocket 64 adjustably mounted on the bearing block 11 and thence to a driven sprocket 65 keyed to a shaft 66. The shaft 66 is journaled in bearing bosses 67 formed as a part of the lug extension 20a on the housing 20. A sheave 68 is secured to each end of the shaft 66 and from which sheaves the hoppers may be belt driven.

In case it is desired to manually operate the pusher slides 31 and 50 to retract them in their respective slide brackets independently of the power means a pull back handle lever 70 is provided that is pivotally mounted so as to freely operate about the head end 37a of pivot bolt 37. The handle lever 70 is over-balanced so as to normally overlie the drive unit A (see Figs. 1 and 2) and is provided with a depending nose 71 abutted against the shaft 66 as a stop. The lever 70 is so arranged as to line up with a roller 72 rotatably mounted on a pivot pin '73 forming a part of the lost-motion linkage 33. In order to retract the pusher slides in their respective guideways without operating the machine by power it is only necessary to manually operate the lever 70 in a counterclockwise direction as viewed in Fig. 1 by grasping its upper end and pulling it toward the front part of the machine whereupon only the lever 35 and associated pusher slides 31 and 51 will be operated. It should be here understood that the lever does not move at any time that the setting machine is power operated.

It should be understood that many of the units or parts associated with the setting unit, such as the plunger head with its associated parts are of well known construction and need not be further described in detail. The principal feature of this machine being in rearranging the numerous parts and linkage for operating the main plunger and feed slides in a unitary structure and then to devise the drive unit as another unitary structure so that there is in fact only one main moving connection between the units, namely, the pitrnan link 16. After the units are attached to the common support 19 a pair of stabilizing brackets 74 are connected between and bolted to the bearing block 11 of the drive unit and the support frame 26 of the setting unit so as to combine the two units in a more rigid structure for the complete setting machine.

In the operation of this machine which may be under the control of a foot treadle, the one revolution clutch 16 will first be tripped whereupon the constantly rotating beltdriven fiy wheel 17 will cause the main drive shaft 12 to rotate one revolution and carry with it the eccentric 13. The single cycle of the eccentric will operate the bell-crank lever 26 through the pitman link 14 and cause the plunger 23 to descend in the head 22. The descending plunger 23 in cooperation with the forming die will pick up complemental fastener elements previously fed into their respective jaw receiving units 32 and 51 and unite them in the usual manner upon a piece of supporting material.

It is to be observed that during the fastener setting operation of the unit B the pusher slides 31 and 50 will be retracted in their respective feed tracks by the operation of the common lever 35 operated from the bell-crank lever 24 through the lost-motion linkage 38 and pick up another set of elements from the ends of the chutes 28 and 48 and during the up or return stroke of the setting punch said pusher slides will advance said latter set of elements into the jaw units 32 and 51 ready for the next setting operation.

I claim:

1. In a fastener setting machine, a setting unit comprising a head and a stationary anvil, a reciprocating setting punch operating in saidhead, a short bell-crank mounted on said head and connected to said punch, fastener holding jaw members associated with said anvil and with said punch, separate pusher slides for feeding fasteners into said jaw members, and a common lever pivoted on said head, operated by said bell-crank and having link connection with each of said slide means, and means for oscillating said short bell-crank.

2. A fastener setting machine as defined by claim 1 wherein a lost-motion connection is provided between one end of the common lever and the bell-crank.

3. In a fastener attaching machine, a frame having a head, a plunger reciprocating in said head, a short bellcrank lever mounted on said frame for operating said plunger, a pair of feed slides slidably mounted in said frame and adapted to deliver fastener elements to the setting station of the machine, a common lever having linkage connection with said slides, a lost motion connection between said common lever and said bell-crank lever, and power-driven means for operating said bell-crank lever.

4. In a fastener attaching machine as defined by claim 3 wherein the linkage connections between said slides and said common lever are adjustable.

References Cited in the file of this patent UNITED STATES PATENTS 561,015 Mathison May 26, 1896 1,197,828 Keck Sept. 12, 1916 1,944,510 Hayden Ian. 23, 1934 2,337,268 Peterson Dec. 21, 1943 2,406,516 Treciokas Aug. 27, 1946 on... gu

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