US1223848A - Constructing lid-hinges for sheet-metal receptacles. - Google Patents

Description

G. W. BERRY.

CUNSTRUCTING LID HINGES FOR SHEET METAL RECEPTACLES APPLICATION FILED APR. 22. l9l6.

1,223,848. Patented Apr. 24,1917.

4 SHEETSSHEET I.

V INYENTOR:

George W Berry G w. BERRY.

CONSTRUCTING LID HINGES FOR SHEET METAL RECEPTACLES.

APPLICATION FILED APR.22,1916- 1,223,848. latcntcd Apr. 21-, 1917.

4 SHEETSSHEET 2.

, mvsmom Gcovy e W. B crry 'iB- h is Any. OW

George WBen ry 0.

G] W. BERRY.

CONSTHUCTING LID HINGES FOR SHEET METAL RECEPTACLES.

APPUCATIDN man APR. 22. 1916. 7 1,223,848, Patented Apr. 2-1, 1917. v 4 SHEETS-SHEET a.

G w. BERRY. CONSTRUCTING LID HINGES FUR SHEET METAL RECEPTACLES. APPLlCATlON FILED APR. 22,1916.

1,223,848. Patented Apr. 2 1, 1917.

I 4 SHEETS-SHEET 4- mum G. W. :BERRY tles' formed integrallv upon the 11d rim TED STATES PATENT OFFICE.

GEORGE WILLIAM BERRY, OF ROSE BAY, NEAR SYDNEY, NEW SOUTH WALES, AUS- TRALIA, ASSIGNOB TO THE WIRELESS HINGE MANUFACTURING COMPANY LIMITED,

01! SYDNEY, AUSTRALIA.

CONSTRUGTING LID-HINGES FOR SHEET-METAL RECEPTACTMQ To all whom it may concern:

Be -it known that I, Gnonen 'WILLIA M BERRY, a subject of the King of Great Br tain, residing in Rose Bay, near Sydney, in the State of New South Wales, Commonjiwealth-of Australia, engineer, have invented "new and useful Improvements in Constructing Lid-Hinges for Sheet'Metal Receptacles, 01: which the following is a specification. r y

' This invention relates to the manufacture of pressed sheet metal receptacles comprising a body portion formed with bulbed tongues and a rimmed lid portion adapted to fit over the body portion with hinge pinupon which pintles said bulbed tongues'are closed to form a wireless hinge joint uniting said body and lid, The invention is applicable to rectangular receptacles, or receptacles other than rectangular'having one fiat side. v

The object of the invention is to provide commercially effective means whereby integral pintles may be produced with certainty by -bending and cutting the lid rim stock in a certain succession of die press operations, and to obviate the losses and avoid the failures hitherto encountered as a consequence of the bending die jumping and gripping the st'ockand mutilating it. It is necessary that the hinge pintles be uniform in dimensions and identical in form and shaped to fit rotatably free in the bulbs on thetongues which formpintle bearings. I

Minimum cost of manufacture is a primary consideration in the production of sheet metal receptacles such as hinged lid tobacco boxes and the like, and it is necessary thatvthe hinge members of such receptacles. shall be formed and engaged in a succession of automatic die press operations in order to minimize labor cost and insure rapid production and uniformity of prodnot; The efiectiveness of each of the several die press operations depends necessarily upon the effectiveness of the preceding step. A failure in one step in the succession of operations will necessarily involve difiiculties'in the succeeding steps, which may interfere-with thefeed of the press in which the operations are conducted, or may result in mutilation of the hinge members and Specification of Letters Patent.

r'atented Apr. 24, 1917.

tion of the thin stock of the lid in an early operation of forming the lid, and the consequent impossibility of centering the slender overhanging partswhich were partially detached from the main part of the lid stock in such step with the result that the forming dies to bend these parts to form pintles would grip and jump said slender overhanging parts and so deform'them that they were in a large proportion of cases made useless as hinge members. Due to the said deformation of the pintles difiiculties arose in the final step of closing the bulbed tongues in the body stock around the pintles so as to leave said lid pintles free to turn in the bulbs of the tongues.

According to the said known method of I manufacturing integral wireless hinge pintles on sheet metal receptacles in a compound die press, spare stock left on one rim of the lid in the lid-forming operation was slotted back so as to leave two slender laterally projecting tongues on said stock. In a succeeding operation it was attempted to die roll or bend the depending stock and the tongues projecting laterally therefrom so as to form therefrom a tubulous or fluted the lid rims in the lid forming operation,

to provide material for the hinge pintles. In the first die operation to form hinge pintles on the lid, the depending margin of the rim stock is die rolled to a tubulous or V flutedsection, and in a succeeding operation two or more slots, depend ing upon the number of hinge pintles required, are made in the rim stock above the die rolled marginal portion thereof so as to form from the ad- 1nd, ting or ragging will tachcd ends of such marg a1 5. on will be rounded, 'tl'icrcby iueurin a free lit for the pint-lee in the hulbs'o' the tongues.

The accompanying explanatory drawings illustrate formed body and lid and the hinge members in successive stages of their production. and fitting in a compound. die press, and they 'llustrate also the construction of the s and die blocks with their e..-

mqr parts in which the .iorm.- tting and closing operations :zted in such vi to 7 are perspective views which gross of the manufacture of the hinge inf our stages. Figs. 1 and 2 show the body and lid as delivered for the making and fitting of integral. hinges thereon, Figs. 3 and 4, the same parts after the first die press operation, Figs. fiand 5 the same parts after the second die press operation, and 'Fig. 7 the two parts as fitted together in the third die press operation. In each die press operation double punches and dies are used and the body and lid members are each operated on simultaneously at each successive movement of the punches.

stalled in a multi die press which. is fitted with means .for transferring the Work in progress from the feed to the lirst die block,

4 thence at the completion of the first move ment of the press to the second die block, t h ence on the completion of the second mWement of the to the third die block, and thence ejecting the completed hinged mCBPtac-Ie out of the machine. The means iorconveyin the parts into and out of the machine an, for transferring them, from 'a block to die block successively theredoes not form part of the present inyenon. Figs. ,8 and 9' are transverse sections through the first punch and die block used in carryin out the present invention; as shown jbiil d. tongues and clearnace space are formed is the, receptacle 'body and the i depeg ding part of the lid stock die rolled to form a tubulous or flutedcdge or false Wire- Fig. -8 shows the first operationpunchbeforc its descent, and Fig. 9 shows 50 said punch in the' closed positionon the die .jblock with the formed mctalcontaincd be- 'tweeii' the punch and the die block.

Figs. l0'and 11 are corresponding views showmg the punch and die block in. the next stepof the manufacture. In this step by the bulb'cd tongues.

Three sets of dies and punches are in- 1 ,cesgses rearward of the ends of the tubulous false wire to form same into pintles engageable Figs. 12 and 13 are similar views illustrative of the last stage of the manufacture, in which the bulbed tongues are closed over the projecting pintle ends.

Fig. 1.4 is a perspective'view of the punch and die block for performing theoperations indicated in Figs. 3, 4:, 8 and 9. Fig. 15 is a similar view of the punch and die block used for performing the operations already explained with reference to Figs..5, 6, 10,

and 11. Fig. 16 is a similar view of the die members for performing the operation shown in Figs. 12 and 13. Fig. 17 is a rear side view of one member of the top die shown in. Fig. 16. In Figs. 14, 15 and 16 the top die is tilted over to expose its under face to facilitate description thereof. Fig. 18 is a perspective view of the formingpunch, and die block used for producing a lid (Fig. 2) from fiat stock- Fig. 193s a vertical section explanatory of the die press operation in'which the lid blanlr (Fig. 2) is produced by means of the punch and diev F ig. 18.

The numeral 10 designates a punch and die block for cutting and formin the lids from fiat stock indicated by dotte line 10. The die block (see Figs. 18' and 19) is formed of a stout block of metal having a deep groove 11 formed vertically therein and corresponding with the lid sha e; on one side of said groove two inward y rojecting hotch cutters 12 are fitted.- he inner side of each of said cutters 12 is slightly recessed (13) and'the width of the mortise groove is greater between these outtors than at its other parts. A drawing ring 14: is fitted slidably in the groove 11; and is a neat slidin fit over a forming block 15; the shape 0 this block 15 is counterpart to the shape of the lid blahk to made.

The ring punch 16 is so shaped on its outer periphery that it Will run neatl into and completely fill the groove 11 in t a die block.

The outer ring of the die block is splayed "up for shearing at the edge of the groove 11. When forming lids a sheet of stock is placed over the die block and the punch dropped thereon. The ed es of the cut stock are forced downward ly arour the forming block 15 by the continued down lid, and same is ejected from the punch by the follower 18 wardly when the when it is pushed downpunch ring is nearing the 'limit of its upward travel. 20 is a rectangular sheet metal receptacle body which is shown by way of example but need not necessarily be of this or any approximately similar shape so long as it has one flat side. 21 is a lid for said body, produced as already described. The back rim of this lid is made deeper between the notches 23 than its depth elsewhere; the centrally disposed depending portion, 22 provides stock for the formation of hinge pintles.

The notches 23 extend more or less (see Fig. 2) into the rim stock above the depending part 22 and curve the ends of said depending part as shown.

In orderyto form a hinge, the receptacle body 20 is placed over one side of a die block 24 (see Fig: 8) which is fitted on a bed 25, and the lid blank is set over the die block 26 on the opposite side of the said bed. The die'block 24 is formed with two protuberances 27 having their upper surfaces and outer ends rounded off and their inner ends cut vertically. A counter-sink 28 extends from one protuberance 27 to the other. The punch 29 is fitted to a ram 30 and is are counterparts of the protuberances27. A depressing piece 32 on the punch 29 sets into the countersink 28 in the die block 24 when the punch is down.

When" the punch 29" descends on to the die block the wardly dispose receptacle body ('protuberances 27 form outbulbs 33 on the wall of the and the depressing piece 32 forms an inwardly disposed depression 28' between the bulbs.

' The inner edges of the countersinks 31 coacting with the square inner edges of the parts 27 shear vertical incisions 34 in the stock at the inner the forming operation. The slitting and form-in of the bulbs 33 is performed simuland' the bulbs are thus finished with their adjacent ends open to accommo date the bin e pintles on the lid (see Fig. 3): The lid ie block 26 is formed with a longitudinally disposed rib 36 of the same a 36. he rib 38 length as or slightly longer than the depend- 111g portion 22 of the lid rim. The top punc posed drawin I ribs 38 and 39, with intervenmg oove w ich is counter-part. to the rib rib 39 and as the punch descends the said rib 38 bends. the edge part of the depending formed with countersinks 31 which.

ends of said bulbs 33 in 37 is formed with two parallelly di sis placed is slightly deeper than the.

portion 22 of the'lid rim over the inner ed e I of the rib 36 before the rib 39 bears on t 6 upper part of the depending portion. ofthe lid. The bending and pinching of the edge ings. The ribs 38 and '39 set into shallow countersinks' 40 and 41- in the die block. Hinge pintles are formed in a later operation by slotting out stock rearward of the tubular or fluted edge. The body and lid are now removed to the second die blocks 43 and 44, respectively. The die block 43 is mounted on a bed 45. It carries two forrm ing cutters 46 of angular shape in cross section and rectangular in' plan. Their inner faces are vertical and their outer faces chamfer forwardly from the'upper face. These spreading-cutters 46 are located on the die block 43 so they set beneath the bulbs 33 on the receptacle body. The punch 47 is carried on a ram 48 and rectangular recesses 49 are formed in said punch face 47 to aline with the cutters 46 and slit the Stock in the ck of the receptacle. body-- ng he upper sides and downward slightl The beyond the outer ends of the bulbs. rectangular pieces of metal bounded by the slits so made are pressed, outwardly from the back of the receptacle body in the clos- I ing of the punch 47 forming bulbed tongues see Figs. 5 and 11 of the drawing. A

pocket 51 is formed in the face of the die block 43, (see Fig. 15) to accommodate-the depressed portion 28' on-the back of the receptacle body.

The die block 44 on the opposite side of the bed 45 is mortised as terpart to punches 53. The said punches 53 slot opt portions 54 of the lid stock as The ram 48 is fitted with a spring controlled stripper saddle 56 shaped to accompunches 53. A recess 58 formed v in the stripper 56 accommodates the central" modate the portion of the bent margin 42 on. the back of the lid. When the stock 54 has been removed and the bulbed tongues have been raised as shown in Figs. 5 and 11, the ram 48 Is,

raised and the receptacle body and lid are removed from the die block. i

The body is then placed over :the vertical side of the closing die block 59 and the lid on the opposite side of' the said die shown'at152 counblock inclining toward the back (if the-body,

so that the pintles 55 come directlybeneath the bulbs 33 which are then closed over the 12 and 13).

The punch of the closing die is formed in two parts, one-part 61 being fixed in the ram and the other part 62 being slidable against backing springs 63. The slide 62 ,normally projects below the fixed part 61,

and as the ,punch descends the two parts 61 and 62 are brought to hear one on either side of the bulbous part oftheraised tongues and set the said tongues back into their original positions now inclosing pintles 55. The contiguous lower corners of the two parts of the closing punch 60 are corner fluted as at 64: to permit of the punch coming hard home Without injuring the bulbs 33, the false wire 42 or the pintles 55. a

The fixedpart 61 of the closing punch is.

formed with depending projections 6i which are adapted to pass through the slots 65 on the lid stock. The faces of the depending of said rim stock to form a tubulous or fluted edge thereon, and secondly slotting back said stock rearward of said tubulous edge, thereby forming pintles engageable by said body tongues.

3. An improved process of hingedly connecting a run lid to a rece tacle body con:

structed in sheet metal, w ich consists in forming the lid with a centraily disposed depending portion on one of the rims thereof, bending the marginal portion of said depending stock to a tubiilous or iiuted edge projections 64 approximate in size to the and thereafter forming pintles from the outer endsof the bulbed tongues, and bear upon the upper sides and rounded ends of the said bulbs. 1

The closing die block 59 is formed with a central depression 66 to accommodate the depressed portion 28 on the back of the re ceptacle body, and in the face of the said die'block at the, endsof the depression 66 are recesses 67.shaped to receive the edges of the stock from which the pintles are formed.

' The bulbs 33, when the tongues are closed, are sufliciently large to permit free pivotal movement of the intles 55 when the lid is being opened an closed. The object in rounding off the points of the depending stock 22 from which the false wire 42 is formed is to remove and prevent subsequent formation of bur or rag and so insure for said pintles free movement in the said bulbs.

In the old process of forming the lid pintles referred to a large percentage of the,

intles'were deformed with the result that 1t was impossible to neatly inclose said pintles by the bulbed tongues, and when the tongues were closed upon such deformed pintles it was impossible to open the lids without straining or distorting the hinges,

When a hingeis mutilated in manufacture and is strained or buckled in opening the lid it is im ossible to again close the lid tubulous or fluted section, slotting out rim stock rearward of the tubularly bent margin thereof thereby leaving portions of said tubulous or fluted margin to form pintles, po-

ends of said tubulous or fluted lid edges by cutting away portion of the lid stock above and around the ends of the same: forming two 0 on end bulbs on the back of the receptacle ody, slitting the body stock over the top andouter ends of each of said buibs and then bending the stock bounded by said in-' clsions outwardly tov form bulbed tongues, introducing said gintles beneath said bulbs, and inclosing sai tongues over said pintles.

4. An improved process of hingedly con necting a receptacle body and a rimmed lid therefor constructed of sheet metal, consisting in forming) the lid with a depending portion on the ack rim thereof, then formmg a bent edge on the margin of said depending portion, subsequently producing p'intles at the ends of said bent edge by slotting out portions of the rim above the ends of the same, formin bulbed tongues on the back of the receptac e body, and finally inclosing said tongues over said pintles.

5; A process for hingedly connecting a" sheet metal receptacle body and rimmed lid, which consists in producing bulbed tongues on said body portion, forming one rim of the lid with a depending ortion terminated by. curved notches exten ing into the rim stock above saidde ending portion thereof,

bending the depen 'ng portion of the rim stock to a, tubulous or uted' sectiom'slotting out -rim stock rearward of the tubularly bent margin thereof inward from the beforementimed notches at the? ends thereof; thereby leaving the end portions of said tubulous or fluted margin srojecting toform pintles, introducing sai pintles-into said bulbed tongues, and inclosing said-bulbed tongues thereon. r a i 6. The herein described improvement in the manufacture of sheet metal reoe tacles with rimmed lids hingedly attached ereto by intles which are formed in the lid rim stool; and are embraced by bulbous tongues on the body member, which consists of the following named operations in successive order:firstly, forming one rim of the" lid with 3 depending portion' terminated by curved notches extending into the rim stoc above said depending portion thereof, bending the dependin portion of the rim stock to a tubulous or. uted section, slotting out rim stock rearward of the tubularly bent margin thereof inward from the beforementioned notches at' the ends thereof, thereby leaving portions of said tubulous or fluted m 'n to form pintles, and introducing said pint es into said bulbous tongues and inclosmg s'aid bulbous tongues thereover.

The herein described improvement in the manufacture of sheet metal boxeswith go rimmed lids hingedly attached thereto by pintles formed integral with the lid rim,

thereby formin which process consists in the following named operations in successive order firstly cutting two curved notches at the ends of a dependm margin in the stock on one side of the li such notc es, thereby formin a tubulous or fluted ed thereon; and t 'rdl slotting back sai rim flock adjacent 0th said on t e body portion of the receptacle.

In testimony whereof I have signed my rim; secondly, bending thedepending margin of the rim stock between into projecting pintles name to this specification in the presence of two subscribin witnesses.

' GEO GE WILLIAM BERRY. Witnesses:

A. J. Gunman, Amman E. BROWN.

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