US905852A - Forming machinery. - Google Patents

Description

J. GUTHBERT.

FORMING MACHINERY. APPLICATION 211.21) 001. 1, 1906.

905,852 Y Patented Dec. 8, 1908.

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J. GUTHBERT.

FOB-MING MACHINERY.

APPLICATION FILED 00121, 1906;

Patented Dec. 8, 1908.

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J. GUTHBERT.

FORMING MACHINERY.

APPLICATION FILED OUT. 1, 19.06.

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905,852. Patented Deg. 8, 71908.

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QJLWZKM JOHN GUTHBERT, OF CHICAGO, ILLINOIS.

FORMING MACHINERY.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed-October 1, 1906. Serial No. 336,835.

To all whom it may concern:

Be it known that I, J OHN OUTHBERT, citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Imrovement in Forming Machinery, of which the following is a full, clear, concise, and exact description, reference being ad to the accompanying drawings, forming a part of this specification.

My invention relates to stamping and forming machinery and has for its object the rovision of. a machine of this class which will be of greater efhciency and of more simple construction than the machines of this kind of the prior art.

- stamping It is one of the primary objects of my in vention to provide a machine which will do in one operation what has heretofore been done in three or four and which will be free from the complex and intricate mechanism whic has heretofore been employed in attempts to construct machines which would secure these desirable results.

Broadly speaking, the machine of my invention is a press which is provided with devices and forming dies which operate with each stroke of the press slide to stamp and form the blanks which are fed intp the machine to produce the desirable artic e.

It isone of the features of my machine that delicate adjustment is not required, and that all that need be done manually is to feed the blank, for instance, a metal ribbon, into the machine. This feature eliminates the necessity of an experienced operator and thereby lowers the cost of production of the article manufactured.

Another of the important features of my device is that the various operating parts are in plain view and are of easy access in case of necessity of repair.

ple and ositive and become struction is such that the creases the expense of roduction. struction is such that t the machine is first stamped formed into the finished article.

so that they may be easily reached and manipulated I provide a construction, the operation of which is simwhich does not easily isarranged or disordered. The conmachine may be operated by small power which further de- The con e blank being fed into and is thenadvanced to the forming mechanism where it is The stamping mechanism and the forming mechanism which is keyed to operate simultaneously but not upon the thereon.

same portion of the blank. Upon the same stroke during which dies are forming into the finished article the furthermost advanced ortion of the blank, the stamping mechanism operates to punch another portion of the blank. By this feature, the machine is able to complete a stroke of the punch slide.

The operation and the construction of the machine will be more readily understood by reference to the accompanying drawings in which Figure 1 is a front elevation of the machine; Fig. 2 is a side elevation thereof; Fig. 3 is aplan view thereof, that ortion of the machine above the line 3 of Flg. 2 being removed; Fig. 4 is an elevation view of the die and punchin mechanisms on a larger scale; Fig. 5 is a etached sectional view on the line 55 of Fig. 3; Fig. 6 is adetached sectional view on the line 66 of Fig. 3 Fig. 7 is a detached sectional view on the line 7 of Fig. 3; Fig. 8 is a view of one form of blank which may be fed into the machine, showing the blank after it has been stamped; Fig. 9 isa view of the finished article formed from the blank shown in Fig. 8 by means of the dies shown in Figs. 1, 4., 5 and 6;Fig. 10 is a side view thereof; Fig. 11 is a view illustrating another form of die which may be employed; Fig. 12 is a sectional view on the ine 1212 of Fig. 11; Fi 13 is a view of form of blank w ich may be fed into the machine, showing in dotted lines the sha e of the blank after having been stam e Fig. 14 is a view of the finished artic e formed from the blank 13 by the dies shown in Figs. 11 and 12.

The machine frame 1 is supported by the legs 2 and 3 which are bolted thereto and are held together by means of the tie rods 4. The upper part of the frame consists of the uprights 5 and 6 which terminate at their upper ends in the bearings 7 and 8 The various mechanisms, as will be hereinafter described, are mounted on the bed 9 of the frame, and the bolster plate 10 is mounted thereon and secured thereto by any suitable means.

Mounted in the bearings 7 and 8 is the main shaft 11 which is provided at one end with the loose pulley 12 which is adapted to be brought into operative engagement with the shaft by means of the clutch collar. 13 the shaft but is slidable The main shaft 11 is also provided another with the crank 14, the pitman 15. being lower arms of the dogs to be forced downmounted therein as shown in the drawings. wardly until the cam plate has assumed the he lower end of the pitman 15 is pivoted to position shown in the dotted lines in Fig. 4. the slide 16,which is mounted in the gibs 17 The springs 50 and 51 are then distended, and

and 18, these gibs being secured to the the dogs assume the position shown in dotted 70 framework by means of the bolts 19, 19. lines in this figure. The dogs preferably To the slide 16 is secured by means of the have the extensions 46 and 47 leading forbolts 20, 20 the supporting member 21 wardly at right angles to the main portion which supports the forming and stamping thereof, whereby the cam plate 25 may enmechanism. The supporting block 22 is gage the extensions in order that it may 75 secured to the member 21, and the punches properly operate them. The relative lateral 23 are mounted in this supporting block. disposition of these parts is shown in dotted To the supporting member 21 is also secured lines in Fig. 2. The formers 30 and 31 are by means of the bolts 24, 24 the cam plate suspended in the same plane with the main 25, which is adapted to reciprocate therewith portion of the dogs, so that when the slide 30 and to ride in the slot 26 cut in the bolster descends and the cam plate forces the dogs plate 10. To insure against the disarrangeabout their respective pivots, the upper ment of the parts operating in the slot 26, lever arms of the dogs may engage the outer the cap plate 27 is secured to the front of the surface of the formers, forcing them inbolster plate, as shown in the drawings. wardly, whereby they are made to assume 35 Suspended from the pivots 28 and 29 in the the position shown in dotted lines in Fig. 4. supporting member 21 are the die or forming In order that the finished article may drop members 30 and 31 respectively. These 1 from the dies whc n the outside formers have dies, as will be hereinafter described, are beenremovedtherefrombytheupward stroke adapted to operate with the punch slide and of the slide, mechanism is provided to draw 90 are adapted to operate with the cam plate 25 the die 33 ackward in a slot in the bolster in the slot 26. The forming members an I 31 are adapted for association with the die ished article may be stripped therefrom and members 32 and 33, the die member 32 being I dropped into a receptacle below the ma- 30 part of a block 34 which ismounted in a slot chine. Mechanism for securing this result 95 35 in the apron 36 of the frame, and is made is shown in the various figures and particuadjustable in said slot by means of the screw larly in Figs. 3 and 5. Secured to the shaft mechanism 37. Lock bolts 38, 38 are pro- 11 is the sprocket wheel 53. Mounted in vided to hold the die in any desired position. bearings 54, 54 is the shaft which is pro- 35 The stock which is being fed into the mavided with the sprocket wheel 56, this chine is shown at s and is advanced until it sprocket wheel and the sprocket 53 being opreaches the stop 39. The machine is then eratively connected by means of the sprocket set in motion, and the plunger, which norchain 57. Secured to the shaft 55 is the mally rests in its upward position, descends. 5 cam 58, best shown in Fig, 5. The cam fol- 40 The former 31 is provided with an extension f lower 59 adapted to be operated by this earn 40 which has the knife edge 41, and as the I is mounted upon the bed 9 and is adapted to slide descends, this knife edgein conjunction slide between the guides 60 and 61. This with the shoulder 42 of the bolster plate 10 camfolloweris connectedwiththeinside die 33 cuts the stock at this point. Further down bymeans of the rod 60. Adjustablymounted 45 ward motion of the slide causes the formers upon the connecting rod 60 is the arm 61 30 and 31 to draw the stock about the die 33. between which and the cross piece 62 of the When the slide has reached its lowest posiframe is connected the spring 63. This tion, the formers are forced toward the inspring holds the follower 59 in close engageside dies 32 and 33, the mechanism for sement with the cam surface of the cam 58.

50 curing this result being as follows: Piz'oted It is evident from the drawings that a comat 42 and 43 to the apron 36 are the dogs 44 plete revolution of the shaft 55 in the direcand 45 respectively, these dogs being in the tion of the arrow 64 would cause a moveform of bell crank layers, as shown in the ment of the follower and the associate die drawings. The lower arms of the dogs are 33 from the position shown in Fig. 5 to the 55 provided with the lateral extensions 46 and 1 position shown in dotted lines in this figure. 1 47, the adjusting bolts 48 and 49 hating The cam 58 is of such shape that over half a threaded engagement with these extensions revolution is completed before the backward 46 and 47 respectively. Normally these movement of the follower and the die 33 is dogs are held in the position shown in Fig. 4 commenced. This camis so timed withregard to by means of the springs 50 and 51 which are to the connection of the shaft 55 with the interposed between the frame and the upper I main shaft 11 that this backward movement arms of the dogs, as is clearly shown in the will be begun directly after the beginning of drawings. When the cam plate descends, l the upward stroke of the slide. As has been the cam surface 52 thereof engages the upper before stated, and as is evident from an ex- :65 end of the bolts 48 and 49. This causes the amination of Fig. 4, the formers 30 and 31 are released immediately upon the commencement of the upward stroke of the slide. Thus, the die 33 is withdrawn directly after the release of theformers 30 and 31, this release being caused by the release of the dogs from contact with the cam plate 25. By the employment of this mechanism, the formers 30 and 31 are released from the finished arti cle which has been formed about the die 33, and immediately thereafter the die 33 is drawn backwardly whereby the finished article is stripped therefrom and may drop into a receptacle below. In order that the stock may be held securely upon the die 33 while the forming is taking place, that is, during the downward stroke of the slide and the consequent operation of the dogs and formers 30 and 31, I provide the gripping mechanism shown in the various figures and particularly in Figs. 3 and 6. A shaft 65 is mounted in suitable bearings, and a sprocket wheel 66 is secured thereto, as clearly shown in Figs. 3 and 6. The shaft 55 is provided with a sprocket wheel 67, and this sprocket wheel is connected operatively with the sprocket wheel 66 by means of the sprocket chain 68. Also secured to the shaft 65 is the cam member 69 which has as its follower the arm 70 of the lever 71, this lever being pivoted at 72 in the bearing 72 in the crosspiece 62. A spring 73 is connected between the frame and the lever 71, as shown in Fig. 6, whereby the arm 70 may be held in close engagement with the cam surface of the member 69. A grip 74 is provided and is mounted in the dove-tail slot 75 in the crosspiece 62 and is adapted to operate therein.

At its upper end the grip 74 is provided with the pivot 75, this pivot being in engagement with the elongated slot 76 in the arm 77 of the lever 71. From an examination of Fig. 6, it will be noted that a complete revolution of the shaft 65 will cause a movement of the lever 71 about this pivot, whereby it is made to assume the position shown in dotted lines in this figure. ward movement of the grip 74, whereby it is brought into engagement with the stock upon the die 33. This will hold the stock firmly in place until the further rotation of the shaft 65 has caused its release by reason of the advance ofthe cam 69. The sprocket wheels 66 and 67 are preferably alike, so that -a complete revolution of the shaft 55 will cause simultaneously a complete revolution of the shaft 65. The cam 69 is so timed that it will hold the lever 71 in the position shown in dotted lines in Fig. 6 during the time that the formers are drawing the stock about the inside dies. Thus, the grip 74 holds the stock firmly while the forming is taking place. Thus, while the formers 30 and 31 are drawing the stock about the inside dies, the stock is firmly held in place by the grip and immediately upon the release of the This will cause the downformers 30 and 31, the grip 74 releases the whereby the finished article is allowed to drop into the receptacle below.

In order to further secure against any displacement of the stock while it is being punched or while the forming is taking place, I provide the mechanism shown particularly in Figs. 3 and 7. The shaft 65 is provided at its ends with the cam 7 8, the shape of which is clearly shown in Fig. 7. Pivoted .to the support 79 at 80 is the lever 81, the arm 82 of which is adapted to engage the cam, and the arm 83 of which is adapted to engage the stock 8, as shown in Figs. 3 and 7. Secured at its end to the arm 82 is the spring member 34 which is engaged by the bolt 85 passing through the arm 82 and which is adapted to form the engaging surface for the cam 78. It is evident that by the proper manipulation of the bolt 85, the proper disposition of the wearing surface of the spring member 84 may be obtained to secure the proper operation of the lever member 81, so that its arm 83 will securely engage the stock 8. The cam 78 is of such shape that the stocks will be firmly engaged by the arm 83 during an entire revolution of the shaft 65 except for a short space of time, this short release of the stock being caused by the disposition of the part 86 of the cam surface. The cam 78 is so timed with regard to the other operative mechanism associated therewith that the stock will be released during that time that the knife edge 41 is above the horizontal plane of the stock and at the time when the stock can best be advanced to the stop 39. The operator of the machine can exert a constant forward push upon the stock to advance it toward the stop 39 but can feed it only when the dies and associated mechanisms are in position to receive it. The cams are so adjusted that the stock will be gri. pod, and immediately thereafter the sli e will descend, whereby the knife 41 will cut the stock, as has heretofore been described. To prevent any lateral movement of the former 31 while the knife edge 41 is brought into engagement with the stock, a guide block 86 is provided upon the crosspiece 62 which engages the side of the projection 40. The other side of the former 31 is in engagement with the stop 74, as shown in Fig. 4, so that a positive direct downward movement of the knife will be afforded.

As has been stated before, the clutch collar is keyed to rotate on the shaft 11 but it is longitudinally slidable thereon. A bell crank lever 87 has a forked end which engages the clutch collar and is pivoted at 88 in the pivot block 89 secured to the machine frame. The other arm of the bell crank lever is connected through a cable or chain 90 with the treadle bar 91 which is pivoted to 1 the machine frame at 92. Upon downward stock, and the die 33 is drawn inwardly pressure on the treadle the bell crank lever is rotated and the clutch collar slid to the right into clutching engagement with the pulley 12 and the machine is started. It is desirable that the machine be automatically started when stock fed into the machine reaches the proper position to be operated upon. This, I accomplish electrically by solenoid mechanism comprising a winding 93 inclosed in a frame 94 suitably securedto the machine frame by means of bolts 95. A core 96 for the winding is pivoted at 96 to the end of the lever 97, whose other end is pivoted to the machine frame at 98. At intermediate point 99, this lever also is pivoted to the cable or chain connected with the clutch mechanism. Upon energization of the solenoid winding, the armature is drawn down and lever 97 rotated, causing thus actuation of the chain or cable to cause the clutch to connect the pulley with the driving shaft. To automatically cause energization of the solenoid, I insulate the stop member 39 from the machine frame by means of insulation 100. This stop connects through conductor 10' 1 with one terminal of the solenoid wind- 1 ing, whose other terminal connects through conductor 102 with one terminal of switch 103, which is connected through conductors 105 and 106 with a current source. The other terminal of the switch connects directly with the machine frame. When the stock such as the bar 8 is inserted in the machine to be operated upon itis in electrical con tact with the machine frame, and when it reaches the stop terminal 39 in position to be operated u on, the circuit for the solenoid is closed and t e clutch automatically thrown in and the machine started. As soon as the severed blank is moved downwardly by the formers, the circuit is broken, but the clutch can be of a construction which, when thrown into engagement, will retain itself in engagement for one complete revolution and will then automatically release. Clutches of this class are well known in the art and are not claimed herein. Therefore, although the circuit is broken, the machine will continue to run until all the operations have been carried out. The clutch mechanism is then automatically disengaged and returned to its normal position by the springs 87 and 91, spring 87 connecting between the forked arm 87 and the machine frame and spring 91 connecting between the treadle 91 and frame.

For the purpose of convenience in illustration and description, I have shown the dies, formers and punches to be of the particular form whereb the finished article shown in Figs. 9 ant 10 is produced. Referring to Fig. 8 which illustrates the metal ribbon, after it has been stamped, the open ings a, b, and c and the slot (1 are punched by means of the respective punches a, 0

0, and d. For the purpose of illustration, I will assume that the stock has been cut at the dotted line Z. The stock is then advanced until it touches the stop 39. The machine is then started, and the slide descends, whereby the stock is cut by means of the knife 41 at 41. The distance between the stop 39 andthe shoulder 42 and the disposition of the punches relative to each other and to the other operating parts, must be properly gaged so that the finished article may be given its proper form. This precise means, however, is shown merely for the purpose of illustration and description, and it is evident that any form of punch mechanism, dies and formers may be employed to manufacture different articles. The article formed by these dies and shown in Figs. 9 and 10 is a clip for switches, and in the prior art it has been necessary to employ three or four operations to manufacture such a clip. From the foregoing, it is evident that a clip of this kind will be produced with each stroke of the machine.

In Figs. 11 and 12, I have shown another form of dies and formers which may be employed to secure another product. The ribon metal fed into the machine when such dies are employed is shown in Fig. 13, and the shape and form of the blanks after having been stamped is shown in dotted lines in this figure. The dotted lines at and y inclieate where the blanks are cut by the knife 41. The finished article formed by these dies is shown in Fig. 14, it being a clip for electrical fuses which are employed for the purposes well known in the art, The lugs g, g, as shown in Fig. 14, after having been cut out, as shown in Fig. 13 in dotted line, are turned over the front of the die by means of the shoulders 15, t on the dies 30 and 31. This construction is clearly shown in Fig. 12. From these figures just described, it will be seen how dies of different shapes and corresponding formers may be employed for the production of different articles.

From the foregoing, it will appear evident that I provide a forming and stamping machine which is of simple construction and which does not easily become disordered or disarranged. I provide a device of the class described which will produce a finished article with each stroke of the machine. The

machine is of such a nature that delicate adjustment is not necessary, and its operation is such that an experienced operator is unnecessary, the only thing done manually being the feeding of the stock into the machine. Moreover, this feeding is entirely controlled by the mechanism described, whereby the danger of improper or careless feeding is effectually eliminated. The machine is so constructed that difierent forms of punches and dies may be readily substituted, whereby different articles may be manufactured.

While I have herein shown and described but one embodiment of my invention, it is evident that changes and modifications could be made by those skilled in the art without de arting from the spirit or scope thereof. I 0 not, therefore, wish to be limited to the recise construction herein shown, but

I claim as new and desire to secure by Letters Patent:

1. In a device of the class described, the combination with a reciprocating slide, of punch mechanism secured. to said slide and adapted to stamp a blank fed into the machine upon the downward stroke of said slide, dies over which the blanks stamped by said punch mechanism may be formed, formers mounted in said slide for association with said dies, means for cutting said blank from the stock upon the downward stroke of said slide, a cam plate secured to said slide, and pivoted dogs controlled by said cam plate, said dogs being ada ted to exert ressure upon said formers, w ereby said b iank is formed over said dies, upon the downward stroke of said slide.

2. In a device of the class described, the combination with a reciprocating slide, of punch mechanism secured thereto, formers pivoted in and sus ended from said slide, dies with which sai formers are adapted to be associated, a'cam late secured to said slide, and dogs control ed by said cam plate, said dogs being adapted to exert pressure upon said formers with the descent of the slide, whereby said formers are forced about said dies.

3. In a device of the class described, the combination with a reciprocating slide, of punch mechanism operating with said slide, a die over which b anks stamped by said unch mechanism are ada ted to be formed,

ormers pivoted in said slide for association with said die, a cam plate operating with said slide, dogs controlled by said cam plate, said dogs being adapted to exert pressure u on said formers with the downward stroke 0' the slide whereby the blanks are formed about said die, and means for withdrawing said die from the formed article.

4. In a device of the class described, the combination with a reciprocating slide connected with a rotating shaft, of punch mechanism secured to said slide, formers supported by said slide, a die with which said formers are adapted to be associated, means for exerting pressure upon said formers upon the descent of the slide whereby a blan stamped by said punch mechanism may be formed over said die, an auxiliary shaft operatively connected with said shaft, a cam upon said auxiliary shaft, and a follower for said cam, said follower being connected with said die whereby said die may be withdrawn from the finished article upon the upward stroke of the slide.

5. In a device of the class described, the combination with a reciprocating slide connected with a rotating main shaft, of punch mechanism secured to said slide, a die over which blanks stamped by said punch mechanism may be formed, formers pivoted in and suspended from said slide, a knife upon one of said formers for cutting said blank from said stock, a cam plate secured to said slide, pivoted dogs controlled by said cam plate, said dogs being adapted to be engaged by the cam plate upon descent of the slide to exert lateral pressure against the formers to cause said blank to be drawn about said die, and cam and follower mechanism operatively connected with said main shaft for causing the withdrawal of said die from the finished article upon the upward stroke of said slide.

6. In a machine of the class described, the combination with a reciprocating slide, of punch mechanism secured to said slide, formers su ported by said slide, a die over which blan ks stamped by said punch mechanism may be formed by said formers, and a cutting edge on one of said formers for severing the unched blanks from stock fed into the mac 'ne.

7. In a device of the class described, the combination with a reciprocating slide connected with a main shaft, of punch mechanism secured to said slide, a die over which a blank stamped by said punch mechanism may be formed, formers pivoted in and suspended from said slide, a cam late secured to said slide, dogs controlled foy said cam plate, said dogs being adapted to exert pressure upon said formers with the descent of the slide whereby said blank may be formed about said die, gripping means for securely holding said blank upon said die while said forming is taking place, and means for withdrawing'said die from the finished article.

8. In a device of the class described, the combination with a reciprocating slide, of formers mounted therein, a die with which said formers are adapted to be associated over which blanks may be formed, a cam late secured to said slide, pivoted dogs controlled by said cam plate, said dogs being adapted to exert pressure upon said formers with the descent of the slide, gripping means for securely holding the blank upon said die during the descent of the slide and for releasing said gripping means during the upward stroke of the slide, and means for withdrawing said die from the finished article.

9. In a device of the class described, the combination with a rec'procating slide connected with a main rotating shaft, of formers pivoted in and suspended from said slide, a die with which said formers are adapted to be associated and about which a blank may be formed, a grip for holding said blank securely upon said die while it is being formed, a pivoted lever connected with said grip, and a cam which said lever is adapted to follow, said cam being mounted upon a shaft operatively connected with said'main rotating shaft.

10. In a device of the class described, the combination with a reciprocating slide connected with a main rotating shaft, of formers pivoted in and suspended from said slide, a die with which said formers are adapted to be associated, a grip for holding said blank securely upon said die while it is being formed, a pivoted lever connected with said grip, a cam which said lever is adapted to folwith said die upon the descent of said slide, means for exertin pressure upon said formers whereby sai lank is drawn about said die, cam actuated means for securely holding saidblank upon said die, said means being adapted to release its hold during the upward stroke of the slide, means for withdrawing said die from the finished article, and auxiliary cam actuated gripping means for holding the stock, said means being adapted to release the stock when it is to be advanced.

13. In a machine of the class described,

low, said cam being mounted upon a shaft the combination with reciprocating mechanoperatively connected with said main rotating shaft, an auxiliary cam secured to said shaft, and gripping means operated by the auxiliary cam for holding said stock, said auxiliary gripping means being adapted to release said stock when same is to be advanced.

11. In a device of the class described, the combination with a reciprocating slide connected with a main rotating shaft, of stam ing mechanism secured to said slide, a d fe about which blanks stamped by said stamping mechanism may be formed, formers oted in and suspended from said slide for association with said die, a knife edge upon one of said formers for cutting the blank from the stock upon the descent of the slide, a cam plate secured to said slide, pivoted dogs controlled by said cam plate, said dogs being adapted to be brought into engagement with said formers with the descent of the cam plate whereby said formers are forced about said die, a grip for holding said blank securely upon said die during the descent of the slide, said grip being connected with a pivoted lever arm, a cam which said lever arm is adapted to follow, mounted upon an auxiliary shaft operatively connected with said main shaft, auxiliary gripping mechanism operated by an auxiliary cam upon said auxiliary shaft for holding said stock, and means for causing the withdrawal of said die from the finished article during the upward stroke of the slide, said grip being adapted to release said stock at the same time, said auxiliary gripping means, being adapted to release said stock when it is to be advanced.

12. In a device of the class described, the combination with a reciprocating slide connected with a main rotating shaft, of stamping means mounted thereon, a die over which blanks stamped by said stamping means may I l I I be formed, formers supported by said slide I ism connected with a mam rotating shaft for stamping and forming blanks, of a driving wheel, clutching mechanism for connecting said driving wheel with the main rotating shaft, treadle mechanism for operating the clutch mechanism, solenoid mechanism for operating the treadle mechanism, and an e ectrical circuit for the solenoid mechanism automatically'closed upon feeding stock into the machine.

14. In a machine of the class described, the combination with a reciprocating slide pivframe, of forming members carried from said frame, die mechanism for cooperating with said forming members, bell crank levers pivoted to the machine frame and adapted to be engaged at one end by the frame to cause engagement at their other end with the forming members to cause said forming members to form blanks over the dies.

15. In a device of the class described, the combination with a vertically reciprocating slide frame, of forming rods pivoted to and extending downwardly from said frame, dies supported from the machine frame for cooperating with the forming rods, means for feeding blanks below the forming rods and over the die, descent of the frame causing said forming rods to engage the blank to bend the blank over the die, and bell crank levers pivoted adjacent the die and engaged at one end by the frame so that their other ends engage against the former rods to exert lateral pressure thereon whereby the blank is formed about the die.

In witness whereof, I hereunto subscribe my name this 24th day of September A. D, 1906.

JOHN CUTHBERT.

Witnesses:

ARTHUR H. BOETTCHER, LEONARD W. N OVANDER.

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