US1793089A

US1793089A - Paper-utensil-forming die

Info

Publication number: US1793089A
Application number: US292081A
Authority: US
Inventors: Heyes Percy Furlong
Original assignee: SIDNEY TORRANCE HEYES
Current assignee: SIDNEY TORRANCE HEYES
Priority date: 1928-07-12
Filing date: 1928-07-12
Publication date: 1931-02-17
Anticipated expiration: 1948-02-17

Description

Feb. 17, 1931. P. F. HEYEs 1,793,089

PAPER UTENSIL FORMING DIE INVENTOR f2# ig/mwyf J ATTORNEY Feb. 17, 1931. p. F, HEYES 1,793,089

PAPER UTENSIL FORMING DIE Filed July 12. 1928 2 Sheets-Sheet 2 INVENTOR @@ffyff.

ATTORNEY Patented Feb. 17, 1931l UNITED AsTAa'lfle:fs PATENTv oFFi'cE renner FURLONGHEYES, or TORONTO, ONTARIO, oANAnA, AssIeNorv To sInNnY TORRANCE Vnaires, or TORONTO, ONTARIO, oANAnA` i PAPEB-UTENSIL-FGRMING' DIE Application lcd July 12, 1928. Serial No. 292,081.

This `invention relates to improvements in paper utensilmolding dies, as described in the present specication and illustrated'` in the accompanying drawings ,which form part vg-Of the same. i y

The .invention consists essentially ofthe novel features pointedout broadlyand spe- 'ciiically in the claim for novelty fol-lowing adescription containing` an explanation in detail of an acceptable form ofthe invention. A

Thefobjects of the invention are to constructan improved form of paper molding die in which the article is stamped, formed and finished in the one operation; to ensure a @clean cut edge on the finished product, thereby reducing the number of culls; to prevent 'distortion in the article when it is being formed or sheared from theI paper stock.; to reduce the labor` upkeep costs; to simplify the mechanism required and reduce the power consumption; and generally, 'toprovide a paper utensil molding die, simple in operation and capable of accomplishing the aforesaid purposes. j

In the drawings, Figure 1 isa rearelevational view ofthe invention. i, Y Y

Figure 2 is an enlarged frontV elevational .view with parts in section to disclose the different working parts.v` Y ,c

Figure 3 isa section view taken yon line 3-3in Figure 1. Y. 4 Figure4 a section view takenl on line 4-4 inrFigure 3,. A e5 l i responding parts in thevarious `figures.`

Referring to the drawings, 10 represents the invention complete, consisting-of the male die'V 11 reoiprocally mounted in the maledie holder 12, and the female die'13 reciprocally mounted in the femaledie holder 14, having the flange 15 ,formed atAitsabasesecuredgto y Ythe baseplatefl of the usual press in which V.these dies are mountedz 17 is a shaft formed the plunger of the press and actuating. the

member 12; Lugs or extended portions 184 on the male Edie holder 12 Vand secured toV secured to the fiange, 15 `extend upwardly therefrom and enter the opening 19 andform a snug lit therewith when the member 12 is lowered by the cam or crank mechanism of the press, and serve as means for guiding the Vdie 11 into its properposition with the die 13 when forming the utensil.

The male die 11 is formed with the parallel sides 23 and iits snugly into the recessed portion 24 of the member 12 and is reciprocally mounted therein.` The upper side of the member 12 is enclosed by the web 25. At

Vregular intervals in the webv 25 are countersunkopenings 26, and a bolt 27 is reoiprocally `mounted inthe central Opening 28 in the countersunlr portion 26. The bolt head 27A rests on the shoulder 29 of the countersunk portion. The bolt 27 is threaded into the vmale die 11 as at 30. Compression springs 31 encircling the bolts 27 impinge against the upper face 32 of thedie 11 and against the underface Ofthe web 25`and tend tov retain the die 11 in spaced relation therefrom. An

Velectric heating element 34 is placedin the recessed portion 35 in the male'die 1l and properly insulated therefrom and has the J properly insulated leads 36 and36A leading vout through the web 25 to the source of electrical energy. j

A plate 38 secured to the male die 11 by the [screws 39 protects the heating element 34 and retains it in place. A flat circular ejector plate 40 is centrallylocated in the under face cf the die 11 and recedes into the recessed por- Y c i, Y l ,c Y tion 41 of the die 11 when the forming action Lilie numerals of reference Aindicate co'rtakes place.` A` plunger 42 is secured to the ing 43 in the die 11 and is reciprocally mount ed therein.- An adjusting nut 45 and a lock jnut 46 are threaded on said plunger. A reduced portion 42A of the plunger extends upwardly and is reciprocally mounted in the opening 48 in the web 25. Acompression spring 49 impinges against the nutV 46 and againstvthe under face of the web 25 and serves to actuate the ejector plate 40.

, The female die 13 is formed with the par- Y allel side walls 51 which form aV snug fit with the inner walls 52A of the recessed portion 52 v,formed the member `and vr eci p rocally` mounted therein. A heating element 34A is mounted in the groove 35A formed in the under face of the female die 13 and is properly insulated therein and has the leads 36B and 36C properly insulated and let out through an opening formed in the end wall or web 53 in the member 14 and to the source of electric energy. A plate 33A secured tothe un-4 der face of the die 13 by the bolts 39A serves to protect and to retain the heating element,

34A in place. A shaft 60 extends downwardly through a central opening 62 formed through the plate 61 and forms a snug lit in said opening and is reciprocally mounted therein. An adjusting nut 63 having a lock nut 64 is threaded onto the shaft 60 and supports a washer 65A mounted on said shaft.

A strong compression spring 65 impinging against the under face of the plate 61 and against the washer 65A serves to resiliently retain said plate 61 against the under face of the web 53 and to retain the female die 13 substantially in the position shown in Figures 1 and 2, and to resist the downward pressure of the male die thereon and to compress the springs 31 until the paper utensil is formed. The pressure of the springs 31 on the male die 11 is then great enough to overcome the pressure of the spring 65 and the male die forces the female die to recede into the recess 52. The walls 23 of the male die conform with and form a snug fit with the side walls of the recess 52 and may reciprocate therewith.

Bolts 67 are threaded upwardly into the die 13 and carrying cylindrical spacers 63, pass through openings 69 in the plate 61 and have the nuts 70 threaded onto the lower portion thereof. The spacers 68 are reciprocally mounted through openings 71 in the web53 and serve to retain the die 13 in spaced relation with the plate 61. An ejector plate A is centrally mounted in the upper face of the die 13 and is adapted to recede into the recess 41A when the paper utensils are being formed. A plunger 42BA issecured to the underside of the plate 40A and xtends downwardly through the centrally located opening 43A andl is reciprocally mounted therein. Lock nuts and adjusting nuts A and 46A, respectively, are threaded onto the plunger 42B. The reduced portion 42C of the plunger 42BL extends downwardly and into a centrally located opening 48A in the web 53 and the shaft and is reciprocally mounted therein. A compression spring 49A impinging against the upper face ofthe web 53 and against the nut 46A, serves to actuate the ejector 40A.

The upper and inner corner 7 5' of the side walls of the member 14 are sharpened and form a shearing edge. The lower edge 7 6 of the side walls 23 of the die 11 is sharpened and forms a shearing edge which slides past the edge 7 5 as the male die 11 is forced down into the recess 52 in the member 14. Thus we see that the edge 7 6 and the edge 75 form co-acting shearing members and serve to shear the stamped paper utensil from the paper stock. In order to ensure perfect vertical shear, a portion 77 on the under face of 4he die 11 and adjacent the edge 76 is formed at right angles to the sides 23 and extends inwardly a slight distance. A similarly flattened portion 7 8 is formed on the upper face of the female die 13 and adjacentthe outer periphery of said die 13.

In order to remove the finished utensil from the dies, a dog is pivotally mounted on the side of the member 12 as at 91, and is adaptedto slide past a trigger 92 on the downward stroke and to depress said trigger 92 on the upward stroke, thus opening the valve at 92A to allow a blast of air to be forced thro-ugh the hose 93 and the nozzle 94. A hose 95 leads to any compressed air storage tank and connects through the valve 92A actuated by the trigger 92 to the hose 95. 96 is a platform supporting the paper stock 97 being led into contact with the dies.

In the drawings, an electric heating element is shown mounted in the male die 11 and in the female die13, but it is to be understood that any of the known heating means, such as steam or-gas, may be successfully used to heat the dies without departing from the scope of this invention.

In the operation of this invention, the dies with their supports or holders, are mounted on a suitable press, and the female die holder 14 is preferably secured to the base plate, as mentioned above, whilef the male die holder 12 is secured to the reciprocating part of the press which is actuated by the cam or crank mechanism. The paper stock 97 is fed between the dies 11 and 13 from any convenient direction, and the amount fed in is controlled by the usual feeding mechanism, well known to the art. On the downward stroke of the male die, the ejectors 40 and 40A on coming in contact with the paper stock are forced into their respective recesses 41 and 41A and the paper stock is formed to conform with the surfaces of the die. At the same time, the stock is heated by the dies and considerable pressure is exerted by said dies so that the utensil will retain its form after removal from the die. The compression spring 65 retains the female die in the position shown in Figures 1 and 2 until the paper utensil is formed. The pressureA exerted by the springs 31 on the male die 11 then overcomes the pressure of the spring 65 exerted on the female die 13 andforcesl said female die along with the paper utensil, downwardly into the recessv52. The shearing edge 7 6 carried on the outer periphery of the male die 11 then coacts with the shearing edge 75 carried on the inner edge of the female die holder 14 and shears the'utensil from the paper stock. The "3"/ male die 11 is forced downwardly a slight distance into the recess 52. The upward stroke now commences, and when the male die reaches the position adjacent its extremity of upper travel, the ejectors 4() and 40A force the utensil out of contact with the dies 1l and 13, respectively, and the dog 90 actuates the trigger 92 to depress the valve in the hose 95 to allow a blast of air to be forced 19 from the nozzle 94 and blow the utensil away from the dies, substantially in a direction at right angles to the direction of travel of the paperv stock.

What I claim is:

In paper utensil formingdies, male and female dies having cooperating shearing edge-s and spring pressed and spring cushioned respectively, ejecting members operating on the release of pressure on said springs and a valve controlled tubular passage and nozzle having an operating trigger and connected to a compressed air supply and directed to the ejected pressed article at an A angle to the line of travel of the lfed in material.

Signed at the city of Toronto, this th day of April, 1928. Y

PERCY FURLONG HEYES.