US540242A - Manufacture of paper boxes - Google Patents

Description

| l B I M. GALLY.

Patented June 4, 1895.

v 1 I F1311;- a

J l B l I I A! I E E li l I I 1.5: "I'll MANUFACTURE OF PAPER BOXES.

(No Model.)

UNITED STATES PATENT OFFICE.

MERRITT GALLY, OF BROOKLYN, NEW YORK.

MANUFACTURE OF PAPER BOXES.

SPEGIFICATION forming part of Letters Patent No. 540,242, dated June 4, 1895.

Application filed June 12, 1894. Serial No. 1 4,298- (No model.)

To all whom it may concern: Be it known that I, MERRITT GALLY, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in the Manufacture of Paper Boxes, of which the following is a specification, reference being had to the accompanying drawings.

Theinvention relates to the manufacture of boxes from paper, pasteboard and similar materials, in cutting said material to form the box-blanks, and in performing the initial process for producing the foldings of the boxes in their proper positions.

In the accompanying drawings, Figure 1 is a plan view of the cutting form or die, having die-plates attached to the body of the form. Fig. 2 is a plan view of the platen or cuttingplate of a press on which are counter-bend ing plates. Fig. 3 is a longitudinal section taken on line N of Fig. 1. Fig. 4: is a longitudinal section taken on line D of Fig. 2. Fig. 5 is a sectional View showing creasing-die, box material, and channeled packing, forming a counter-die on face of platen or cuttingplate, exhibiting old method of creasing; and Fig. 6 is a sectional view showing the body of form with die-plate attached, box material, and counter-bendin g plate, exhibiting the new process for producing the initial bend, securing the line of final folding.

In the ordinary method of preparing blanks for folded paper boxes, a cutting and creasing form or die is made up of sharp cutting rules, and thicker blunt-edged embossing rules, and printers furniture or blocks of either wood or metal, in similar manner to the making up of a type-form for printing. This form is placed upon the bed of a printing or cutting and'creasing press; and a thick paper packing is built up on the platen, made usually of several sheets of paper pasted one upon another, in similar manner to forming an ordinary embossing counter. The blunt embossing rules of the form are then beaten into the packing by repeated impressions, While the packing is drying, forming embossing-channels as a female counter-die, into which the blunt rules of the form register as a male die. The compressed material in the bottom of the channels is usually cut out, in order to deepen the channels to make room for the embossed lines of the box-material to be embossed. The'cutting rules sever the box material for the boundary lines of the box blank, and the embossing rules emboss deep groove-like lines in one side of the material which is pressed into the channels of the counter, the other side of the material showing raised ridges. The embossed grooves of the material form and determine the lines on which the material is finally to be bentfor the foldings of the box to be formed, and as the material in the groove is stretched by the act of embossing, it is made more limp than the body of the box and is therefore easily bent. This method of construction I find to be defective, first, in the fact that the deep grooved lines in one side of the material, or the raised ridged lines on the opposite side of the material, mar the beauty of a fine box, and, secondly, that the stretching of the material in the grooved lines makes the angles of the box weaker than other parts of the material, while the contrary should be the case in order to produce a good box. Further, in using cheap material having short fiber, when dry, the material is broken in its fiber instead of being stretched, and is thus greatly injured. Preparing the forms and counters for this process, is also too expensive. It is very difficult to make up a form of both cutting and embossing rules and secure the exact relative positions of the cutting and the embossing lines. This requires not only expert workmen, but consumes a great amount of time. Much time is also used in beating up the counter, and in cutting out the channels, any of which, if not cut with careful exactness, produces defects in the angles of the box.

In my improved process, I use either a solid cutting die, or, if constructed of rules, use only the cutting rules, a block and furniture. In the latter case, a single block is usually sufficient for forming the body of the cutting die. This block, made of even thickness, 1.

saw to the shape of the box-blank to be made, and make saw-cuts in or extending into the block to receive the pieces of cutting rule which are to produce the cuts in the boxblank which lie within its boundary line. The cutting rules then placed around the "boundary line of the block and locked into the chase with furniture completes the ICO Fig. 1. The form of these plates is immaterial, except that a part of their outline shall conform to the desired folding line to be-p'ro= duced, and that room is left for the counterbending plates B of Fig. 2 re resentedm Fig. 1 by the dotted lines. I fully constructed the bending-plates B, Fig. 2 are glued or otherwise attachedkto" the face of the platen H, Fig-2 This may be done by first taking. an impression of the" cuttingform on a thin-sheet of paper attached to the face of the'platen as agu'ide; or, by measurement, or, in the following pret'er'ablemanner: I first attach to one ofthe surfacesof the plates B,-two-' or three small pieces of pasteboard or card, sufficiently thick that Whenplaced against the fa'ce of the die-block, they will bri'n gthe' outer face of the p'l'ateB a little higher than the cu-tti ng edge ofi the cutting-rules.- Th engputti'ng' a small quantity of glueor' paste on these smaltpieces'of card, I attach the plates B,thus prepared-to theface of the die-block in position, line to line, with the d'ie-plates-A, as shown by the dotted lines in Fig. 1-. Inpl'aci ng the plates 13,-I hold a piece of card between the: edges of platesA- and plates Emmet-ward mustbe' a little thinner than the material of which the blanks'areto be made. I then coat theou'ter surface of all: the: plates B w'ith thic'k glue; or other adhesive material,- and' them bring th e platen of the press to an impression against them. The greater adhesi veness'of theglued surfaces ofthe-plates B tot'h'e face of platen; will, when the platen is removed", tear away the small piecesof pasted card, and leave the plates B in exact workingposition on the platen. I now remove the small pieces of card from the face of the plates B, and the en tireapparatus is ready for use. The plates 13' may be'constr'ucted of metal,-wood, hard card-board or any suitable; hard material. To insure smoothness in the initial bend of the material of the bo'x-blank the sharp' ang le line of the plates A and B may be slightly rounded.

The device'sfor creasing the box-blanks ployed, are shown inFig. 5. O is a part of The form now being the-form made up of blocks or furniture 5 rule 8 is forcingthe box material 6 f, stretch- "ing the material and making in it a deep sunken line on one side and a ridge on the 5 other side.

My new and improved devices for producing an initial bend in the box-material for tached thereto.

. determining the position of the final foldings,

are shown in Fig. 6. G is a part of the bodyblbck oft'he form, and A is the die-plate at- The line a: y represents the face of the platen and isthebending-plate attached theretet The box material e'f is shown with the: initial bend made therein,

pressed between the edges of the die-plate A and thebendi-ng plate- B Myp-rocess not only m'akesa much better and-stronger hox,-b'ut results in agreat saving over the ordinary processes which produce embossed lines. By actualtest with the'same workmen, I find a saving of over fifty per cent. of time in constructing the formor-die. I find also asaving of over sixty-five per cen-t.of time in making ready the platen:

What I claim as new and of my invention L In aform or die forshapi n'gbox blanks, the combin ation with cutting-rules and a body-block or blocks; of die-plates laid fiatwise on. the body-block or blocks and attached thereto; I

2; In an apparatus adapted to'a bed-andpl atenpre'ss, for simultaneously cutting and creasing box-blanks, the'form-or' die made up of cutti ng rules; a bOdy-block or blocks and die-plates; in combination with the platen or platen=plate provided with coacting' bendingplat'es; substantiallyas set forth.

3'. In an apparatus adapted to a bed-and platen pres's,-- for simultaneously cutting and creasingbox-bla'nkaa form or die made up of cutting-rules, a bodyblock or blocks and die plates in co'mbi nati'onwith the platen or platen-plate provided with coacting bendingplates for'prod u'cing the -initial lines'on which the box-blank is to be folded; the face of the platen or platen-plate serving at thesame time as a base against which the edges of the cutti-n'g-rulesact in severing the material to formthe blank substantially as specified. MERR'IT'I GALLY. Witnesses:

D; B. GALLY, JNO. ROBINSON.

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