US1285104A - Metal-working press. - Google Patents

Description

C. A. FRAHM.

METAL WORKING PRESS.

' APPUCATION FILED JUNE 16. I9I6. 1,285,10%.

Patented. Nov. 19, 1918.

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C. AJFRAHM.

METAL WORKING PRESS.

APPLICATION FILED JUNE 16. 1916.

1,285, 1 04. Patented Nov. 19, 1918.

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C. A. FRAHM. v METAL WORKING PRESS.

' APPLICATION FILED JUNE15 I916- 1,285,104. Patented Nov. 19, 1918.

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C. A. FRAHM.

METAL WORKING PRESS.

APPLiCATIOH FILED JUNE 16. 1916.

Patented Nov. 19, 1918.

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c. A. FRAHIVI.

METAL WORKING PRSSS APPLICATION FILED JUNE I6. I916- Patented Nov. 19, 1918..

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APPUCATION FILED 3UNE 16. I915. 1,285, 194:. Patented Nov. 19, 1918.

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CARL A. FRAHM, OFCANTON, OHIO, ASSIG-NOR TO THE REPUBLIC STAMPING & ENAMEL- ING COMPANY, OF CANTON, OHIO, A CORPORATION OF OHIO.

METAL-WORKING PRESS.

To all whom it may concern:

Be it known that L'GARL A. FRAHM, a citizen of the United States, resident of Canton, county of Stark, and State of Ohio, have invented a new and useful Improvement in Metal-Working Presses, of which the followingis a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to metal-working presses and particularly to automatically operated means for feeding the blanks to such presses, such as for instance are shown, described and claimed in my United States Letters Patent No. 1,207,390.

Th object of said invention, broadly, is to provide etiicient and economically operating means to efiect such feeding operation.

The principal specific objects of the invention are first,-to arrange the mechanism so that a maximum amount of time is afforded for performing the manual operation involved; second,to permit the feeding mechanism to be readily removed from the vicinity of the main body of the machine to allow ready access to the die for removal, replacement or adjustment of such die; third,to permit a fine and ready adjustment of the feed-table; and fourth,to provide improved means for ejecting the work or finished product from the die.

The annexed drawings andthe following description set forth in detail certain means embodying my invention, the disclosed means, however, constituting but one of various mechanical forms in which the prin ciple of the invention may be employed.

In said annexed drawings Figure 1 represents a left hand end View of a drawing press provided with my improved feeding mechanism, portions being broken away to disclose parts in rear thereof.

Fig. l represents on an enlarged scale, a plan of a fragmentary portion of the end of the work-discharging rod, and Fig. l represents a side elevation thereof.

Fig. 2 represents a front elevation of the lower part of the press.

Fig. 3 represents a horizontal section taken upon the plane indicated by line IIIIII in Fig. 2.

Specification of Letters Patent.

Patented Nov. 19, 1918.

Serial No. 104.107.

Fig. 41.- represents a view similar to that .shown in Fig. 3, showing the feed-table swung into a position laterally of the main frame of the machine, and also showing an intermediate positionof said feed-table'in dotted lines.

Fig. 5 represents a vertical transverse section taken upon the plane indicated by line VV in Fig. 3.

Fig. 6 represents, upon an enlarged scale,

a vertical transverse section of a detailed portion of the feeding rod, and Fig. 7 a longitudinal section thereof taken upon the plane indicated byline VIIVII in Fig. 6.

invention is associated with a metal-working press, Which, in so far as relates to the pressing or drawing operation, is of any suitable wellknown construction of the double-acting type, including a hollow die 1, Fig. 5, having a vertical axis, a vertically reciprocating holding-member 2, and a vertically reciprocating drawing-plunger 3,

both member 2 and plunger 3 cooperating with die. 1 to effect the drawing operation. The holding member 2 is actuated by a system of links and arms so arranged that the said holdinganember will engage the blank previously placed in position upon the die, prior to the engagement of the plunger 3 with such blank, and remain insuch engage ing position throughout the entire operating or formative stroke of the plunger, as well as throughout the initial and a subsequent part of the return stroke of said plunger, all as is well-known to those skilled in the art.

The main part of my improved automatically operating feedingmechanism is arranged in front of the press and derives its motion from one o fthe elements of said system of links and arms in a manner hereinafter fully described whereby certain ad vantages are obtained, as will subsequently appear.

The blank-feeding means as a whole may be conveniently divided into four main elements, viz z-the feedtable and connected parts; the feeding rod and connected parts; the ejector-means; and the actuating incchanism.

I shall begin the description of my invention by first describing the Feed tabZe and connected parts. This part of the mechanism con prises a feedtable supportirg frame consisting oi? two component main frame-members, a primary member l and a secondary member 5, as shown perhaps most clearly in Fig. 2. Mercher 4, the primary l ramecneinber, consists or" a body-portion 6 having a vertical cylindrical bore 7 and provided with two laterally extending arms 8 8. each oi which is formed with a bearing 9 for receiving the ends of a journal pin 10. The latter is vertical and is fixed in a supporting member 10 itself fixedly secured to the main frame of the press, 3, and to the right, as shown, of a vertical transverse plane passing through the die-axis, and in the direction of feed or the blanks will hereinafter appear.

Oscillatorily mounted in the bore and vertically slid-able therein is a rod ll. 2, projecting both above and below the frame-member l, the lower projecting portion being embraced by a yoke 12 forming an integral part of said member. Engaging a threaded bore in the cross-piece 13 of such yoke a vertical. screw 1- vertically alincd with the bore 7, whose upper end supports the lower end of rod 11 as shown. This rod may in consequence be vertically adjusted by means of said screw, as will be under stood.

On the upper projecting portion of said rod, is the secondary frameanembcr 5, cured thereto by means of a set screw 15.

This secondary member normally extends longitudinally of the machine and at right angles to the above mentioned transverse plane, as shown on'Figs. :2 and 3 and is provided with two bosses l6, 16, each formed with a vertical bore 17. A vertical l'eedtable supporting rod 18 is seated in each such bore and secured therein. by means oi a set screw 19, Fig. The axes of these rods normally lie in a plane perpendicular to the above-mentioned transverse plane, and the latter passes midway between said rod-axes.

It will be observed from the above-described structure, that the primary frame member l may be swung upon the axis of pin 10 and the secondary member may be swung either upon said axis or the axis of rod 11.

To the lower portion. of that boss 16 lying to the left of said transverse plane is secured the housing-member 20 of means for locking the frame-member 5 against oscillation, these means being shown in detail in F 10 and 11. This member 20 is formed with a horizontal guide-way 21 in which is seated a bolt and a spring 2-3 tending jects which permits the bolt to be manually.

actuated in opposition to spring 23, so as to disengage the bolt from the slot and permit member to be swung upon either of its two axes f oscillation, as will be understood.

The prorision the elongated slot it will be seen, permits the locking engagement of the bolt with the member 2-5, in any of the various positions which may be imparted to member 5 by the adjusting screw 1%,

lhe upper arm 8 of the body portion 6 of the primary frame member 4 is provided with a vertical bor 29, Fig. 2, which registers with a vertical bore 30 formed in the member 10 when occupying its normal position hat is, when the two axes of oscillation lie in the aforementioned perpendicular plane. A pin 31 passes through bore 29 and into bore 80, as shown, and fixes and locks member l; as will be understood, in this normal position, with reference to its axis of oscillation.

The supporting rods 18, 18. are of equal length and are formed with a series of circun'iferential groove 18 equidistant from each other and the uppermost of the grooves on the one rod being removed a distance from the top or its rod equal to that of the uppermost groove of the other rod from its top. Two forked clips 32 are provided, one for each rod 18 adapted to engage these grooves and rest upon the upper adjacent surface oi the member 5, as shown in Figs. 8 and 9, and t us support tlierods. These clips are se- 111 place by means of screws 33, threaded into said member The set screws 19 are placed as to engage the rods 18 intermcdiately of two adjacent grooves; as shown.

The rods 18 1%, form what may be called the legs of the feed-table proper. The upper portions of these logs are each provided with a boss 3%, formed with transi'erse slot 35. in each or" which is located a horizontal bar 36 secured by means of set screws 3?. These bars extend to within a short distance of the die 1, as shown in Fig. 5. and each or" same supports a horizontal plate 38, Fig. 3. These plates are removed from each other at their adjacent inner transverse edges and form a groove 39. The rear edges 40 of each plate form an angle with each other and are tangent to a circle whose center is upon the axis of the die, said circle having 1 a radius equal to the radius of the circular blank which is to be operated upon (the particular feed-table shown being adapted for use in feeding such circular blanks). Each plate is secured to the corresponding bar 36 in any desired manner, and is also provided with a slot 41 extending in a direction transverse with respect to the direction of feed. Mounted upon each plate is a guide bar 42 which has secured thereto a lug 43 secured to the plate by means of a bolt44 passing through the slot 41.- These guide-bars extend beyond the die, and on each side thereof and serve to guide the blanks t0 the die, as will be understood, proper lateral adjustment being se cured by means of the construction described.

The front ends of the bars 36 carry the inclined feed chute 45 which is provided with the lateral guides 46 pivoted at 47 and having their lower ends adjustably secured by means of slots 48 and suitable bolts 49 passing therethrough, these slots being formed upon the arc of the circle as will be understood. The construction of this table proper is similar to that shown, described and claimed in the above-named application, and forms no part of the present invention. Further description thereof willhence obviously be unnecessary.

Inasmuch as these presses are used for performing various kinds of work, and inasmuch as in consequence thereof dies of different sizes and depths are used, it is necessary to frequently adjust the position of the feeding-table proper and the above-described adjusting-means is hence provided. When only a slight adjustment is required, same may be effected by simply rotating the screw 14. When, however, the amount of adjustment is greater than the distance between two slots 18 on the rods 18, adjustment by means of the screw 14 would obviously be comparatively slow. In'this case, however, a quick adjustment may be secured by removing the screws 33, pulling out-the clips 32, then loosening the set-screws 19 and raising or lowering the rods 18 to approximately the desired position. The clips 32 are then caused to engage those grooves which are nearest to and above the upper surface of member 5 and the rods and table then permitted to drop so as to cause the clips to reengage such surf-ace. secured in place by means of the screws 33 and the set-screw 19 caused to secure the rods 18. The final and fine adjustment of the table is then secured by rotating the screw 14.

These clips are then The feeding-rod and attached parts. Forming an element of the actuating mechanism, which will be hereinafter fully described, is a horizontally reciprocating crosshead 50, Fig. 1, which is located upon that side of the press opposite that upon which the feed-table supporting-frame above described, is located, and which reciprocates in the direction of feed of the blanks.

The rear end of this cross-head consists of a plate 51 formed with a horizontally extendings lot 52. A longitudinally and horizontally extending feed-rod supporting arm or bracket 53 is formed with an extension 54 which seats in the rear end of the slot 52 and is removably secured therein in any desired or suitable manner. As shown, the securing means consists of a capscrew 55 which threads into the extension, a suitable washer 55 being interposed between the head of said screw and the plate 51, Fig. 1.

The outer or free end of the arm or bracket 53 is provided with a boss 56 formed with a horizontal bore 57 whose axis intersects the line of the axis of the die, and seated in said bore is the front end of a rod 58, Fig. 5, adjustably secured therein by means of a set-screw 59. Secured to the rear end of said rod 58 is a casting 60 formed with a vertical bore 61in which is seated and secured the lower end of a rod 62 whose upper end project through a vertical bore in the feedin head 63, the latter being adjustably secured upon said'rod by means of a set screw 64. This head includes a yielding member 65 consisting of a contactplate 66 carried by two horizontal pins 67, 67, extending into bores 68, 68, and whose inner ends engage coil springs 69, 69, respectively, as shown in Figs. 6 and 7. The yielding movement of the contact member is limited by a screw 7 0 extending into a recessed portion 71 in one of said pins 67.

The feed-rod and its contact-head just described are of a construction similar to that of the device shown and described in the above-mentioned application, and as in said device, the head travels in the slot 39 formed by the two table-plates 38, .38, and intersects the plane of the upper surface of the latter, a portion 45 being cut out of the bottom of the middle of the chute 45 to permit the head to be drawn completely back of the front ends of said plates, as shown in Fig. 3.

Blanks placed upon said chute, will therefore slide down upon the plates 38, 38, be

. engaged by the head 63 and fed toward the die, suitable stops 72, 7 2, being provided for limiting this travel of the blanks, these stops having their limitin surfaces tangent to the circumference o the aforementioned circle to which the edges 40 of plates 38 are tangent, all as occurs in the case of the device of said above-named application.

In order to cause the feeding-head to al ways stop at eXactly the same place the ends or" its feeding stroke, 1 provide a horizontally eXtcnding stop-pin 78, Fig. 3, adjustably secured by a plate Tl, secured to the cross-head 50, and adapted to abut a member 75, fixed with reference to the main press-frame, in this case consisting of one of the guides for said crosshead. This step is so placed that it may be adjusted to etlec-t its engagement with the guide 75, at just the proper time and limit this end of the operative stroke to the exact point required.

The actuating mcci'zaazam. The movement required of the feeding-rod is derived primarily irom the main crank or cam shaft 77, Fig. 1, which directly actuates the drawing-plunger 3, in this type of machine. This shaft is rotated by suitable gearing (not shown) and extends beyond the left-hand side of the main frame, as shown. To the shaft end is securee the crank 78, which atticulates with a connecting rod 19, itsclt articulating with a vertically rcciprocatin cross-head S0. The latter connected with two oscillatory arms 81, 81, by means of toggle-links S2, 82, and these arms are connected with the two oscil atory cranks S3, 83, through the medium of link 84:, Si. These cranks S3, 83, are mounted upon the shafts which directly impart to the holdingmember its reciprocating motion.

The construction of the actuating mecha nism as thus far described is old and wellknown and is such to eliect the required relative movement of said members '2 and 3, whereby, as before mentioned, the hold member occupies a substantia l stationar position throughout the operative portion of the downward stro to of the plunger 3.

In my present invention, l talre advantage of this stationary condition or dwell of the holding-member, and so connect the parts as to utilize this dwell in connection with the blank-feeding means so as to the operator a maximum time in whicto feed the blank to the feed-table.

This result T accomplish as follows: One of the cranks 83, Fig. l, is provided with an extension 83 to which is pirotally co ected the upper end of a connect rod The lower end oi? the latter with one of bell-er arm ot which of a couneotiu'" which so arranged its extreme .arc while the holding-member is in its lor-iermost or dwelling position, and concurren ly the feeding head will like. occupy its forwardmost position during such time. The required maximum time for performing the manual part of the feeding operation is thus afforded, as will be understood.

The GjfiUfO-fi-77L8fl'llfi These means comprise a device for ejecting the finished product from the operative part of the die, and

device for discharging the product so ejected, from the machine.

The said discharging means comprises a horizontal rod 88, Figs. 1, 2 and 5, extendin in a direction parallel with the direction oi blank-teed, and adjustably secured by means of a set screw 89 in block 90, carried by a vertical rod 91. This latter rod secured in a vertical bore formed in a boss 92 forming a part of arm or bracket 53 by means of a set screw 92. The rear end of said rod is provided with a slot in which is adjust-ably secured a horizontally and longitudinally extending bar Fig. 3.

.2 re outer end of this bar extends over the slot and is located a proper distance in rear of the teeding-head so that it will 1nthe product just finished by the preceding 0 relect the space above the die and discharge her 98, split so that it may be causedto bind and hence fix the position of said member by means of bolts, as at 99, Fig.

Extending through the bore 96, is a vertical ejector-plunger stein provided with a head 101, and a collar 102, the latter in i he bore 96. This collar is engaged by the upper end of a coil-spring 103 surrounding the stem and in the bore, the lower end of which engages the bottom ofthe latter, Fig. T he stem is or" a length such that when collar 102 engages the cap-plate 9?, the upper surface of the head 101 will coincide substantially with the upper surface of die 1, said spring 103 tending to force the e ector into such position.

Vertical adjustment of member 95 may he obtained by loosening bolts 09, and turning member, a collar 10% being provid d for .e purpose, adapted t receive a spanner is thus far described, this feature of the illustrated device is substant ly identical with similar parts shown and described in my above-mentioned pending application.

The low r end of said stem projects below the member 98 and is provided with a h.. rally extending plate 10o, Figs. 2 was, to which are secured two Vertical pins 106, 106, extending through guiding bores 10?, 10?, formed in a flange 108 forming of the member 98. These pins are located" member 2, are two rods 109, 109, Fig. 2, to

the lower ends of which is secured a crosspiece 110, provided with a central opening through which member 98 may pass, said rods being threaded and provided with nuts 111, whereby the cross-piece may be vertically adjusted. This cross-piece is hence caused to reciprocate with the holding-111cm ber, and is so placed that its path of rec1procation coincides, in part, with the path of reciprocationof the upper ends of pins 106, so that as the holding-member moves downwardly cross-piece 110 will engage the top of the pins, depress same,',move the ejectorstem 100 downwardly against the action of spring 108, and move the head 101 downwardly through and out-of the upper or operative portion'iofthe die. When the holding-member moves upwardly, the reverse of theabove action takes place, the spring causing the ejectorplunger to move upwardly and eject the finished product from the die.

During such ejecting action, however, it will be observed that the movementof the ejector is controlled by the holding-mem her through the cross-piece and connected parts, the tendency of the positively operating spring tocause the ejector plunger to forcibly eject the finished product from the i die being modified by the holding member and connected parts. As a result, the finished article is not jammed against the. bottom ofthe holding-member by the ejectorplunger, which jamming, in the case of light work, would result in its. deformation and hence destruction.

The above-described parts are connected and coordinated so as to form a single drawing press provided with an automatically operating feeding-mechanism and operate as follows Assuming the parts to be. in the position illustrated in. Fig. 1, in which the holdingmember and drawing-plunger are in their lowermost positions, the crosshead or. slide 50, and hence feeding-head 63, are in their extreme forward positions. While in this position, the operator places a blank upon the chute, whereupon such blank slides down upon the plates '38, and in rear of said, head 63. In this position the ejectoreplunger will be in its lowermost position with its head immediately below the object which has just been formed in the die, or in case no object has been previously formed, immediately below the operative portion of the die, said ejector being held in this position by crosspiece 110. A further rotation of shaft 77 initiates the upward movement of the plunger 3, but holding-member 2 remains in. position for a time and until the system of links and arms previously described causes it to Concurrently, the feeding-head until it abuts the stops 72 at which time it will be in its proper position on the die, and

ready for the drawing operation.

During the downward. stroke of the plunger 3, and holding-member 2, the reverse'of the above operation will take place, as will be understood.

When it is. desired for any reason, such as necessity for removal of the die, to remove the feeding mechanism from the front'ofthe machine, set screw 92 is first loosened and rod 91 and its attached parts removed. Cap screw 55 is then loosened and the arm or bracket 53 with its attached parts removed. The bolt 22 is then caused to disengage slot 2st and the frame-member'then causedto' swing on theaxisofmod 10, thus allowing the feed-table to move in a direction substantially parallel with the direction of feed and so avoid the adjacentlaterallylocated parts of the' machine, as shown in dottedlines in Fig. 4. After reaching this position, it may then be swung upon the axis of rod 11 and caused to occupy its extreme lateralpost tion, shown in full lines in said Fig. 4.

When the feeding mechanism is in this position, it will be seen that full access to both front and backof the machine is afforded.

Having fully described my invention, what I claim and desire to secure by Letters Patent is r 1. In a metal workmg press, the combmation of a die; a drawing plunger reciprocable with reference to said die and means foreffeoting reciprocation thereof; a holding member reciprocable with reference to said die and means for effecting reciprocation thereof; a blank feeding memberreciprd cable toward and from said die; and means connectlng the feeding member with the holding member whereby the reciprocation of said feeding member is controlled by said holding member, theconstruction being such that the movement of the holding member towardthe die results in the immediate and concurrent movement of the feeding member away from the die and vice versa.

2. In a metal working press, the combination of a die; a drawing plunger reciprocable toward and from said die and means for effecting reciprocation thereof; a holding member reciprocable toward and from said die and independently of said plunger and means for effecting reciprocation thereof; a

blank feeding member reciprocable toward and from said die; and means connecting said feeding member with the holding member whereby the latter ettects the reciproca-V tion of said feeding member; said connecting means being arranged so that said feeding member will occupy substantially that posi tion farthest removed from the die when said holding member is in the position in which it most closely approaches the latter.

3. in a metal working press, the combination with means for drawing the blank, including a reciprocating drawing plunger and a reciprocating holding member and means for operating the same; of a plunger for ejecting the work from the die, said holding member being adapted to hold the blank upon the die and being provided with means connected to said ejector plunger and adapted to retard the operation of the latter while and until said holding member is being removed from the die to prevent the jamming of the work by said ejector plunger against said holding member.

d. In a metal-working press, the combination with means for drawing the blank, including a reciprocating blank-drawing plunger and a reciprocating holding-member; of

a spring-actuated plunger adapted to eject the work fromthe die; and means connected with said holdingmember for completely effecting, in combination with the spring mechanism, the movements 01": said ejector plunger in both directions.

5. In a metal working press, the combination of a hollow die; a reciprocating holding member cooperating with the latter and means for moving said holding member; an ejector plunger extending within said die; a spring adapted to actuate said plunger to eject the work from the die, said holding member being adapted to hold the blank upon the die; and means connected with said holding member and connected to said cjcctor phinger for retarding the operation of the latter while and until said holding member is being removed from saiddie to prevent the jamming of the work by said ejector plunger against said holding member.

6. In a metal-working press, the combination of a hollow die; a reciprocating holding-member cooperating with the lattcr; an ejector-plunger extending within said die; a spring for eflfecting the ejecting movement of said plunger; a contact-man ber connected with said plunger; and a member connected with said holding-member having apath of movement intersecting that of said contact member, the parts being so arranged that the movement of said holdinganember toward the die will effect through said contact member and said second member the recession of the said plunger from the operative portion of the die.

7. in a metal-working press, the combination with means for drawing the blank, in-

eluding a hollow die having a vertical axis,

a vertically reciprocating blank-drawing extending rods connected with said holding-V member and provided with a laterally extending cross-piece having a path of move ment coinciding with that of the ends of said contact pins; said cross-piece being arnnged so that it will be in engagement with said pins during its downward stroke.

8. in a metal-working press, the combination of a hollow die having a vertical axis; a vertically reciprocating drawingphmger cooperating with said die and a vertically reciprocating holding-member also cooperating therewith; a vertically adjustable hollow housing-member having its axis coinciding with the die-axis; an ejector-plunger having a stem extending through said housing-member and adapted to have its upper portion traverse the operative portion of said die; a coil-spring within said housingmember adapted to effect the upward or ejecting movement of said plunger; suitable means for limiting such upward movement; the lower end of said stem being provided with a transverse member having secured thereto two upwardly extending pins located upon opposite sides or the plunger-axis; two downwardly extending rods connected with said holding-member and provided with a cross-piece adapted, during the clownward stroke of said holding-member, to engage said pins to actuate said plunger so as to withdraw same from said die-portion during such stroke.

9. in a metal-working press, the conibination with means for drawing the blank; blank-feeding means including a feedtable and a swinging frame for supporting the lattensaid frame having two axes of oscillation.

10. In a metal-working press, the combination with means for drawing the blank; blank-feeding means including a teed-table and a swinging frame for supporting the latter, said frame having two vertical axes of oscillation.

11. In a metal working press, the combination of means for drawing the blank, including a die; blank-feeding means includ ing a feed-table and an oscillatory frame for supporting the latter, said frame having two vertical axes of oscillation located laterally with reference to a plane parallel with the direction of feed and passing through the axis of said die llO bination of means for drawing the blank;

blank-feeding means including a feed-table supporting-frame; a vertically movable oscillatory rod forming the sole support for such frame; and means for adjustably supporting said rod.

14. In a metal-working press, the combination with means for drawing the blank; of a feed-tableframe comprising a primary and a secondary member; said primary member being mounted upon the frame of the press and arranged to oscillate upon a vertical axis; said secondary member being mounted upon said primary member and arranged to oscillate uponthe latter and also upon a vertical axis.

15. In a metal-working press, the combination of means for drawing the blank; aframe for supporting a feed-table and comprising a primary 'anda secondary member, the primary frame-member being mounted upon the frame of the press and arranged to oscillate upon a vertical axis; said secondary member being provided with a vertical supporting rod adapted to oscillate in said primary member; and an adjusting screw mounted on said primary member and adapted to adjustably support said oscillatory rod.

16. In blank-feeding means for metalworking presses, the combination of a feedtable; vertically adjustable rods for directly supporting said table; and a vertically adjustable framemember carrying said rods.

17. In blank-feeding means for metalworking presses, the combination of a feedtable; two vertically mounted rods directly supporting the latter and provided with a plurality of circumferential grooves; a frame-member provided with vertical bores through which said rods extend; clips for engaging said grooves and said framemember whereby the vertical position of said rods is fixed; and means for vertically adjusting said frame-member.

18. In blank-feeding means for metalworking presses, the combination of a feedtable; two vertically mounted rods directly supporting the latter and provided with a plurality of circumferential grooves; a frame-member provided with vertical bores through which said rods extend; clips for engaging said grooves and said framemember whereby the vertical position of said rods is fixed; and a vertically operating screw for adjusting said frame-member.

19, In blank-feeding means for metalworking presses, the combination of a feedtable; two vertically mounted rods'directlysupporting the latter and provided with a plurality of circumferential grooves; a frame-member provided with vertical bores through whichsaid rods extend; clips for engaging said grooves and said frame-member whereby the vertical position of said rods is fixed; and a vertically-operating screw for adjustably supporting said framemember. a I

20. In a metal-working press, the combination with means for drawing theblank, including a die; of blank-feeding means including a feed-table and an oscillatory frame for supporting the latter, the axis of oscillation being located laterally with re spect to a plane parallel with the direction of feed and passing through the axis of said die, said feeding-means including also a removable reciprocating feeding arm supported upon the side of said plane opposite that upon which the axis of said frame is located.

21. In a metal working press, the combination of means for drawing the blank, in cluding a die; blank feeding means including a feed table and an oscillatory frame for supporting the latter, said feeding means including also a reciprocating feeding arm; and a work discharging member carried by said arm ,and removable therefrom.

22-. In a metal working press, the combination of means for drawing the blank, including a die; blank feeding means includ-' ing a feed table and an oscillatory frame for supporting the latter, the axis of oscillation being located laterally with reference to a vertical plane parallel with the direction of feed and passing through the axis of said die, said feeding means including also a removable reciprocating feeding arm; and a work discharging member carried by said arm and removable therefrom.

23. In a metalworking press, the combination of means for drawing the blank, including a die; blank-feeding means including a feed-table and an oscillatory frame for supporting the latter, the axis of oscillation being located laterally with reference to a vertical plane parallel with the direction of feed and passing through the axis of said die, said feeding-means including also a re movable reciprocating feeding arm supported upon the side of said plane opposite that upon which the axis of said frame is located; and a work-discharging member carried by said arm and removable therefrom.

24. In ametal working press, the combination of means for drawing the blank, including a die; blank feeding means including a feed table and an oscillatory frame for supporting the latter, said feeding means including also a reciprocating feeding'arm;

and a work discharging member carried by, adjustable upon, and removable from said arm.

25. In a. metal'working press, the combination of means for drawing the blank, including a die; blank-feeding means includ ing a feed-table and an oscillatory frame for supporting the latter, the axis of oscillation being located laterally with reference to a vertical plane parallel with the direction of feed and passing through the axis of said die, said feeding-means including also a re movable reciprocating feeding arm, supported upon the side of said plane opposite that upon which the axis of said frame is located; and a work-discharging member carried by, adjustable upon and removable from said arm.

26. In a metal-working press, the combination of means for drawing the blank; blank-feeding means including a feed-table and a swinging frame for supporting the latter; and means for adjusting said frame vertically.

27. In a metal working press, the combination of means for drawing the blank;

neeaioe blank feeding means including a feed table and a swinging frame for supporting the latter, said frame consisting of two parts, one oscillatory upon the latter.

28. In a metal-working press, the combi nation of means for drawing the blank; blanlnfeeding means including a feed-table and a swinging frame for supporting the latter; said frame consisting of two parts, one oscillatory upon the other; and means for vertically adjusting one of said frame members.

29. In a metal-working press, the combination of means for drawing the blank; blank-feeding means including a feed-table and a swinging frame for supporting the latter, said frame consisting of a primary frame member oscillatory upon the main press frame, and a secondary frame member oscillatorily mounted upon said primary frame member; and means for vertically adjusting said secondary frame member upon the primary member.

Signed by me this Qth day of May, 1916.

CARL A. FRAHM.

fiopies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents. Washington, 13.

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