US2670953A - Stock feeding means - Google Patents

Description

2 Sheets-Sheet 1 March 2, 1954 N. M. MARslLlus STOCK FEEDING MEANS Filed sept. 1, l194s;

A JNVENTOR.

NEWMAN M MARSILIUS WW AzTORNEY March 2, 1954 N. M. MARsxLlus sTocxFEEDING MEANS 2 Sheets-Sheet 2 Filed Sept. l, 1949 JNVENTOR. NEWMAN MMARSILIUS ATTORNEY Patented Mar. 2, i954 STOCK FEEDING MEANS Newman M. Marsilius, Trumbull, Conn., assignor to The Producto Machine Company, Bridgeport, Conn., a. corporation of Connecticut 'Application September 1, 1949, Serial No. 113,593

2 Claims.

This invention relates to new and useful improvements in work or stock feeding means and has particular relation to a reliable means or device for the feeding of flat stock in equal increments.

An object of the invention is to provide a. simple yet reliable apparatus or vdevice operable in timed relation with movements of a press for the feeding of flat stock in accurate predetermined increments to the press.

Another object is Ato provide a device or means for the purpose stated and which is of simple and rugged construction adapted for long periods of use without the likelihood of becoming deranged and which is adjustable for widths and thicknesses of material, within limits, and is 'also adjustable or variable as to the length of feeding increments of work or stock.

Other objects and advantages of the invention will become apparent from a consideration of the following detailed description taken in connection with the accompanying drawings wherein a satisfactory embodiment of the invention is shown. However, it is to be understood that the Vinvention is not limited to the details disclosed but includes all such variations and modifications as fall within the spirit of the invention and the scope of the appended claims.

In the drawings:

Fig. l is a top plan view showing the device of L improved stock feed, generally designated I0, asl

shown, includes a base structure comprising a casting II having lan extension I2 to'be fastened as by screws I3 to a die bed I4 of apress. Integral with casting II are a pair of cylindrical or sleeve portions I5 and I6 located one at each side of and projecting above the forward end portion of the casting II and respectively receiving the rear end portions of frame bars I1 and I8 also comprising guidesalong which parts are moved, as will later be set forth.

On the outer end portions of the bars I1 and I8 is a stock securing or holding means, generally designated I9 and adapted, as will later fully appear, to permit of forward movement of stock or of work but to prevent backward movement or retrogression of the stock. The means I9 includes a pair of ring-like or short cylindrical sections 2D and 2l mounted on the forward end portions of the bars I1 and I8, respectively, and secured in place as by set screws 22. Integral with each of the portions 20 and 2l are upstanding bracket- like portions 23 and 24 at their upper ends receiving the respective end portions of a shaft or bar 25 rigidly secured in place'by set screws 26.

Suitably supported by the members 20 and 2l or their portions 23 and 24 and extending between the lower sides of such members and also extending rearwardly of them is a stationary flat shelflike portion 21 having a longitudinally extending slot 28 passing vertically therethrough. Mounted in this slot or extending through this slot are a pair of bolts 29 and 30 between the heads of which and the upper side of said shelf 21 are rollers 3| and 32, respectively. On loosening of nuts 33 on said bolts, but at the under side of the shelf 21, the bolts may be shifted toward and from one another along slot 28 whereby to adjust the distance between the adjacent portions of the rollers or collars 3l and 32 to the Width of stock which is to be fed.

Screws 34 on the inner or forward side of shelf 21 pass through the short arm 35 of a transversely L-shaped plate 36, the longer arm 31 of which extends over the upper side of the shelf 21. The.

openings through which the screws 34 pass through the plate arm 35 are of slightly enlarged diameters whereby on loosening of said screws 34 and the adjustment of a jack screw 38, passing vertically upwardly through the shelf 21 to engage the under side of arm 3'1 of plate 36, the latter may be adjusted vertically.

If the screw 38 is adjusted upwardly vit will force the plate 36 upwardly and if the screw 38 is adjusted downwardly the plate 31 mayV be forced downwardly. A jam nut 39 is provided for securing the screw 38 in adjusted position. Plate 3E is adjustable whereby to adapt the present device for use in the feeding of stock of somewhat varying thicknesses. That is, when a certain thickness of stock is to be fed, the plate is adjusted accordingly and thereafter no adjustments of the plate are required until a stock of a different thickness is to be fed. In otherwords, any adjustment of the plate 36 is a part of the setting up procedure.

Mounted for turning movement about the fixed bar or rod is a gate lie shown as comprising a single piece of considerable width and extending between the uprights 23 and 25 and having a lower cam surface 4I. This surface 4i is an arc of a circle, the center of which is eccentric with respect to the bar or shaft 25 and in the structure actually illustrated, is the point 42 (see Figs. 2 and 5).

While the gate is free to swing on the bar or shaft 25, means are provided for biasing said gate in a counterclockwise direction as the device is viewed in Figs. 2 and 5. Such means comprises an L-shaped rod 43 having its short arm anchored in the stationary bar 25 and having its longer arm passing forwardly through a slot if in the gate 4D and inwardly or forwardly of the gate having a light coil spring 45 thereon. Spring 45 presses at its respective ends against an adjustable nut 45 and a washer 47 having a convex sidebearing against the yinner side of the gate 43. Clearly, the nut may be adjusted to add to the compressionof the spring 45 and the spring thrusting against washer 4'! maintains the latter against the innery or forward side or surface of the gate 45 and the spring is therefore constantly tending to swing the gate in a ccunterclcckwise direction. However, the spring is a light spring and does not exert any great pressure, just enough to add slightly to the gravitational swing of the gate 49 toward a centered, depending position with respect to the shaft 25.

The inner or forward end portions of the bars |41 and I8 are secured in the cylinders or sleeves l5 and I6 in the desired positions as by means of set screws 48. On such bars, immediately outwardly with respect to said cylinders or sleeves, are collars 45 and 55 adjustable on the bars for purposes which will be set forth and adapted to be secured in adjusted positions on tightening of set screws 5I. As best shown in Fig. 1, these set screws bear against flats 52 formed in the outer sides of the bars i1 and I8. On loosening of screws 48, the bars i1 and i8 may be adjusted longitudinally, if desired, to provide for greater lengths of feeding strokes of the device.

Also, von said bars, but outwardly with respect to the collars 45 and 55, are a pair of short sleeve or cylindrical sections 53 and 54 adapted to slide or b e reciprocated outwardly and inwardiy on the bars l'i and I8, the latter functioningas supporting and guiding means for such short sleevesV or cylinders '53 and 54.

. The sleeves or cylinders 53 and 54 rigidly support and may be integral or otherwise made rigid with uprights 55 and 56 which, in their upper portions, support the respective ends of a bar or shaft 51. Here it is noted that the uprights 55 and 55 correspond, respectively, with the uprights 23 and 24 of the means i9 and are spaced a like distance and mount the shaft or bar 51 in alignment with the bar 25 of the means I 9. This bar '51 is fixed in the uprights 55 and 55 by set screws 58 and turnable on such bar orvshaft is a gate 59 of the width of gate 4D and having a lower cam surface 60 and the gate is otherwise of the construction of the gate 40. The cam surface 50 of the gate 59 is the arc of a circle, the center of which is the point 5! located within the shaft or 4 respective ends against the adjustable nut 63 and the inner face of the washer 54 and is constantly biasing the gate 59 for swinging movement in a counterclockwise direction about the shaft or bar 5l. Thus, the gate 59 is constructed and mounted and biased in the same manner as the gate 40.

A shaft 55 extends between thelower portions of the cylinders 53 and 54 and islocated at the underside of the guide bars i7 and I8. Against the forward side of this shelf is the short arm 51 of a transversely L-shaped plate, generally designated 58, the longer arm 59 of which extends over the upper side of the shelf. Screws in pass through enlarged openings in the short arm` 57 of the shelf and may be tightened to secure the shelf in place and may be loosened to permit of vertical adjustment of the plate.

Upward vertical adjustment may be forced by a jack` screw 'il passing vertically through the shelf and engaging the under side of the plate and if this jack screw is threaded downwardly, the plate may be forced downwardly. A jam nut l2 is provided for securing the jack screw in adjusted position. The plate 58 is adjusted for the reasons above set forth in describing adjustments of the plate 35. Thus, shelf 65, the short cylinders 53 and 54, theuprights 55and 55, the bar or shaft 57 together with gate 59 and its biasing means, all constitute part'sof a carriage or 'stock advancing means generally designated'.

The cylinder or sleeve l6"is"somewhatllonger than the cylinder or sleeve i5" and extends i'n-- Wardly slightly beyond the latter and on the upper side of this inner portion` mounts a short transversely extending sleeve T3 integra-lor otherwise" rigid with the sleeve 16. Passingthrougli'this 'f piece structure generallyv designated '15, includes' a tubular bearing portion 'H turnable about one end portion of the shaft or bar '14 and a secondi tubular portion 18 turnable'on the other end por-- tion of said shaft or bar. Thus, the device 'I5 straddles the transversely extending short sleeve or cylinder 13. Additionally, arm device 16 includes a relatively long arm i9 which forms part of a toggle-like structure to be described, and then includes a shorter arm mounting a short heavy pin 8| projecting laterally from one side of said arm and made rigid therewith as on tightening of a set screw 82. f

The arm 19 is bifurcated for a considerable portion of its length and through its upper end and, in the uppererid of its bifurcation receives the inner end of a link 83V. Such end of the link has a short vshaft `Blpassi'ng therethrough'and secured thereto by a set screw 85 and this short" shaft has bearing in the upper end portionsV of the bifurcated arm '59. The forward end of thelink' 83 is pivotally mounted for turning? movement' about the intermediate 'portion of the bar or shaft *51 of the carriage previously described and here With this construction, it will be understood that on rocking of the device 'I5 in a clockwise direction on the shaft or bar 14, there will bea` forward thrust from the arm 79 through the link .83 tothe stock advancing means 85 whereby the latter will be movedV from its inner position as` shown in Fig. '2 'through the intermediate 'posi tion of Fig. 5 to an outer position; Inthe lattern position, -the short cylinders 53 and 54 of .the

'stock advancing means 86 will be brought against i Having thus set forth the nature of my 'invention, what I claim is:

1. In a device for feeding flat strip stock, a base structure including a pair of longitudinal sleeves and a transverse portion rigidly connected to and mounting said sleeves in transversely opposed spaced parallel relation, a pairof transversely opposed supporting and guide bars having their inner end portions engaged in the respective sleeves and longitudinally adjustable therein and projected from the outer ends of said sleeves to provide adjustable length guide portions, securing means movably mounted in said sleeves and cooperatively engageable with said bars to rigidly secure the adjusted position of said bars in said sleeves; a stock holding means rigidly secured upon the outer end portions of 4said bars in outwardly spaced relation to the outer ends of said sleeves extending transversely between said bars and including a rigid shelf for supporting engage ment beneath a strip of stock, means carried by said holding means arranged to grip said strip against outward movement and to permit free inward movement; a stock advancing means comprising a carriage including a pair of sleeve portions respectively engaged for longitudinal sliding movement upon said bars between said sleeves of said base structure and said stock holding means, a rigid shelf in longitudinal alignment with said shelf of said stock holding means for supporting engagement beneath said strip of stock, and means carried by said advancing means arranged to grip and feed said strip during inward movement of said carriage and to pass freely over it during outward movement; a pair of stop members, one mounted on each of said barsfor longitudinal adjustment on saidbars between said sleeves of Said base structure and said carriage, securing means movably mounted in said stop members and cooperatively engageable with said bars to rigidly secure the adjusted position of said stop members; longitudinal adjustment of said bars and said stock holding means rigidly secured thereto determining the outward limit of movement of said carriage, and longitudinal adjustment of said stop members determining the inward limit of movement; and feeding means connected to said carriage to impart inward and outward movement thereto.

2. The invention as dened in claim 1 further characterized by a transverse shaft mounting sleevel fixed upon the upper side of one of said longitudinal sleeves and in that said feeding means comprises toggle linkage including a trans'- verse shaft fixed in said transverse sleeve and having end portions projecting from the inner and outer ends thereof, an arm pivotally mounted at one end upon the inner end portion of said shaft, a link having a pivotal connection at one endtothe freeend of saidarmand having a pivotal connection at its other end to said carriage, a second arm rigid with said iirst arm and pivotally mounted at one end upon the outer end portion of said shaft, an outwardly projected transverse pin carried by the free end of said second arm, a vertical bar to be vertically reciprocated by a moving part of a press in timed relation with movements of the press part, a pair of vertically spaced dogs on and relatively adjustable vertically along said bar, and securing means cooperating between said bar and dogs to iiX the adjusted relation of the latter, and said dogs being positioned to alternately engage said pin as said bar is reciprocated vertically to extend and contract said toggle linkage and thus reciprocate said carriage outwardly and inwardly.

NEWMAN M. MARSILIUS.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 723,400 MacKinzie Mar. 24, 1903 1,375,889 Balt-zley A111226, 1921 1,407,699 Marian Ylc-tl. 28, 1922 1,749,505 Y Pierce Mar. 4, 1930 2,051,312 Morgan Aug. 1s, 1936 2,071,682 Buccicone Feb. 23, 1937 2,188,473 Dickerman Jan. 30, 1940 2,222,168 Brooks Nov. 19, 1940 2,250,530 lC-Iafecostv July 29, 1941 2,263,721 De Lorme Nov. 25, `1941 2,278,921 Fischer Apr. 7, 1942 2,348,456 Dickerman May 9, 1944 2,379,002 Haller June 26, 1945 2,380,918 Borton Aug. 7, 1945 2,388,423 Langdon Nov. 6, 1945 2,397,833 Borton Apr. 2, 1946 2,413,638 Mac Blanc Dec. 31, 1946 2,460,340 Dickerman Feb. 1, 1949 2,467,740 Haller Apr. 19, 1949 2,514,554 Nowelsky July 11, 1950

Images