US 2356926 A
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Description (OCR text may contain errors)
Aug. 29, 1944. J. P. GITS MATCH CASE FiledApril 22, 1942 2 Sheets-Sheet 1 1944- J. P. GITS 2,356,926
MATCH CASE 7 Filed April 22. 1942 2 Sheets-Sheet 2 IN VEN TOR.
Ja s 011:5,
pained Aug. 29, 1944 UNITED STATES-.PATE-N'l OFFICE 2,356,926 m'rcn case Jules P. Gite, Chicago, llL', assignor, by meme assignments, to Joseph A. Gitl, Chicago, 111., and
Application April 'zziisiz, Serial No. 439,000
r Claims. (01. ass-s1) .producing the same is reduced to a minimum and an efllcient structure is obtained. The parts of a device of this type usually comprise a' base anda cover arranged in hinged relation at one end'io permit opening of the cover when a match is removed. Due to the hinge construction that must be employed, reentrant portions and proiections are formed that have heretofore presented a real problem in die construction. The greatest difliculty is the manual labor involved in separating parts of the die after each operation is completed and in replacing them before another operation is commenced. Such reentrant portions and projections compelled the use of complicated and expensive dies which were costly to construct and required a number of manual operations each time a part was molded. These manual operations likewise increased the cost of production and a structure was produced that was not of simple form.
This invention is directed to a molded match box that eliminates such reentrant portions and projections whereby a die may be used that molds each part of the match box by a simple operation, the die merely opening and closing along its line separation between the matrix and patrix without requiring separate removable parts, such as pins, or a construction that is expensive and laborious to handle. Hence, merely a simple form. of die is needed and the complicated compound dies heretofore required are dispensed with.
A still further object of the invention is di rected to the provision of a structure of the type described that will be eiiicient in use and meet the requirement of a pleasing appearance which devices of this type must have in order to be acceptable commercially. v
Other objects and advantages of the invention will be apparent from the following detail descrlption when taken in connection with the accompanying drawings which form a part hereof.
In the drawings:
Figure 1 is a top elevational view of a match box embodyin the invention;
Fig. 2 is a similar-view but with the cover of the match box open; b0Fig. 3 is a side elevational view of the mate Fig. 4 is a perspective view of the match box with the cover open and illustrating in dotted lines a book of matches inserted therein;
Fig. 5 is a sectional viewtaken along line 5-3 of Fig. 1;
I Fig. 6 is a similar sectional view taken along line H of Fig. 2;
Fig. I is a transverse sectional view through the hinge construction of the device, the section being taken along line 'l-1 of Fig. 5;
Fig. 8 is a perspective view of the base of the. match box;;
Fig. 9 is a perspective match box;
Fig. 10 is a sectional view through the die adapted to mold the base, the section being taken through. the plane intercepting the die cavity of the side wall or flange;
Fig. 11 is a section or the same die taken in a plane intercepting the cavity forming the main view of the cover of the 5 wall thereof; 4
Fig. 12 is a sectional view of a die adapted to mold the cover, the section taken along a plane intercepting the cavity for forming one of the side flangesiand Fig. 1;; is a similar view of the die along a plane intercepting the main wall of the cover.
The match box disclosed herein is of a type particularly adapted to receive and carry matches arranged in the well known book form of several rows, as shown in dotted lines at I in Fig. 4, and attached to a backing provided with a striking surface at the lower front, as indicated at 2. When matches arranged in this manner are insertd in a receptacle of the type herein disclosed, an extension of'the backing forming a cover is usually torn away so as to expose the matches when the cover of the receptacle is open.
' As illustrated in the drawings, the match box comprises a base i of receptacle formation and a cover I hingedly connected at one end. of this base. Base I is provided with opposite inwardly turned side flanges 'l and l, and a similarly formed bottom flange 0. At the opposite end, flanges I and l terminate-in ears Ill having generally curved edges H. An inwardly turned flange portion I! is formed crosswise as a continuation of ears II, this flange portion I! endin; at edge ll. Edge" may lie in a plane substantially intercepting the vertical diameter of a pair of opposed pivot pins l4 and I! extending outwardly from ears I9 and at right angles to the outer surface thereof, the vertical diameer as used herein referring to the vertical diameter of these pivot pins when positioned as shown in Fig. 8. For a purpose to be explained later, these pins are, however, of slightly greater dimension along the horizontal diameter, thus causin'g them to be humped at one point or somewhat elongated in cross section. This is not essential, however, in so far as the general concept of the invention of flanges I, 9 and 9 represents the depth of the base and determines the thickness of the match book that may be inserted.
Locking ears l5 extend crosswise of the base from the lower ends of side flanges 1 and 9 for holding the match box within the base, the openings 11 in base 5 to the rear of these lugs being provided in the forming operation so that these lugs may be formed upon base 5 during the molding operation and a removable core pin not required to form the reentrant portion to the rear of the ears l6. The die used to mold base 5 is shown in Figs. 10 and 11 and will be described later.
Cover 5 is also provided with opposite inwardly turned side flanges 29 and 2| that preferably begin at lower edge 22 and increase in width until they merge with offset cars 24 and 25, the edges of side flanges and 2| continuing at 29 upwardly within these ears and ending against the inside face of the cover. These ears 24 and 25 are offset at 21 with respect to the plane of flanges 29 and 2| to permit ears Ill of base 5 to lie in this plane and have their edges ride upon the edges 25 as the cover 5 is swung about pivot pins l4 and 5. This is accomplished by forming slots 25 and 29 in ears 24 and 25 to receiv and retain pivot pins i4 and I5. These slots are open at their ends 39 or at the outer face of the cover and their sides 9| are substantially perpendicular to this outer face. Thus, the cores that form these openings may be carried upon the matrix or patrix of the die unit, depending upon the part in which the die cavity is formed, and be integral with this part so that upon the is concerned. The depth opening of the die, these cores will be moved out and not require separate operations to be removed. An inwardly turned curved portion 33 is also provided crosswise of the cover at this end and formed integral with ears 24 and 25.
When cover 5 is pivotally mounted upon base 5, this inwardly curved portion 99 will ride upon curved portion l2 in overlapping relation. Ears 24 and 25 on cover 5 will also overlap ears H) on base 5, the edges ll of cars l0 riding upon the edges 25 adjacent the inside faces of ears 24 and 25. As previously explained, pins l4 and I5 are of slightly greater dimension along one of their diameters, being the horizontal diameter asshown in Fig. 8, which, however, lies lengthwise of the slots 29 and 29 when cover 5 is in closed position as shown in Fig. 3. Consequently, when the cover 5 is moved to open position, as shown in Figs. 4 and 6, the portions 34 of these pins l4 and I5 representing the added material producing this elongation will cause the pins to bindingly engage the sides ll of the slots 28 and 29 and thus hold the cover in open position. The pliable character of the plastic material that may beused to form base 5 and cover 5 will cause yielding of the parts sufliciently to present any permanent deformation, and consequently, the parts will return to normal position when the cover is closed and the binding action is released. The same action occurs at the time the cover 5 is mounted upon base 5 and pins l4 and I5 are forced beyond ears 24 and 25 into slots 29 and 29.
From the foregoing description of the device, it will be observed that a simplestructure is provided that'has reentrant portions and projections that are of the kind that permit the molding of the base 5 and the cover 5 in a single operation of the die without requiring removable core pins, etc., that require separate operations in order to be removed.
The dies used for molding base 5 and cover 5 have been rather diagrammatically illustrated in Figs. 10 to 13, inclusive. Figs. 10 and 11 represent transverse sections through two difl'erent planes of the die 40 for molding base 5. Matrix 4| is designed to carry the cavity 42 which forms base 5 and its flanges 1, 8, 9 and i2, including a portion of the ears III that lies to the left of line 43 shown in Fig. 8, as well as a portion of pins l4 and I5 that likewise lies to the left of line 44. The portions of ears ID to the right of line 49 and to the right of line 44 of pins l4 and II are formed by cavity portions 45 formed in patrix 454 Lugs I5 are formed by recesses 41 in patrix 45 while openings I1 and the space directly behind lugs l5 are formed by cores 48 integral with matrix 4|. It will be observed that the patrix 45 is formed with projections 49 which extend beyond the lin of separation between the matrix and the patrix but that the design of the parts making up base 5 does not require these projections 49 to be of a shape that will not permit withdrawing them with patrix 45 in a single separating movement of this patrix from the matrix when the die is opened. In other words, the in- .ner and outer surfaces of such projections as flanges 1, 9, 9 and I2, and ears "I, and the reentrant portions formed thereby are substantially perpendicular to the main wall portion of base 5. The pins l4 and 5 are somewhat cylindrical projections, but they are on the outside of ears .ill and lie at right angles thereto or outwardly therefrom so that their formation may be created by splitting the cavity and placing a portion in the matrix and a portion in the patrix. The split may or may not be along the diameter of these pins. The cylindrical formation is still obtained by providing small core projections on the patrix which form th reentrant portions 49' at the top and bottom of these pins.
The die 59 used to mold cover Figs. 12 and 13. The die cavity 5| for cover I and its flanges 25, 2| and 33, including ears 24 and 25, is formed in matrix 52. Cores 52 are formed upon the cavity face of matrix 52 to extend in the portion of the die cavity 5| forming the ears 24 and 25 so as to produce slots 28 and 29 in these ears. The line of separation between matrix 52 and patrix 54 may occur along the edge 55 of inwardly curved flange 39. The projections 55 on patrix 54, which extend beyond this line of separation, form the inner surfaces of flanges 29, 2| and 33, and ears 24 and 25, as well as the reentrant portions which are formed, are substantially at right angles to the plane of the cover so that the patrix projections 55 can likewise be moved outwardly in the separation of these die parts without requiring separate manual operations removing core pins, etc., as heretofore required. This novel result is further obtained by virtue of the construction of slots 28 and 29 and cores 59 carried by matrix 52. By forming the slots .28 and 29 with open ends 94,
6 is shown in these cores may be carried by the matrix 52 and not require a separate manual operation to be removed.
Obviously, the construction of match box disclosed herein is simple and designed to permit use of simple forms of dies that enables production of base 5 and cover 8 by single molding operations eliminating any manual operations that were heretofore necessary, after the die parts were separated, to form necessary reentrant portions or projections on the finished product. The cost of not only the dies has been reduced, because compound dies are no longer necessary. but also the cost of labor in producing the prodnot during the molding operation. This labor saving is tremendous when compared to the actual cost of the material used and the total cost of the product. An article of this type must be made cheap if it is to be practical, and consequently, any saving in production costs extends the field of use and hence its utility.
Without further elaboration, ,the foregoing will so fully explain the gist of my invention that others may, by applying current knowledge. readily adapt the same for use under varying conditions of service, without eliminating certain features, which may properly. be said to constitute the essential items of novelty involved,- which items are intended to be deflned and secured to me by the following claims.
1. In a device of the class described comprising a molded base of receptacle formation and a molded cover hing'ed at one end of said base, said base and said cover having projections and reentrant portions thereon, the projections on said base comprising inwardly turned side flanges perpendicular to the plane of said base and outwardly, extending opposed pivot pins' on two of said flanges, the projections on said cover comprising inwardly turned flanges along certain of the sides of .said cover also extending substantially perpendicular to the plane of said cover, the reentrant portions comprising opposed slots in two of said cover flanges that receive said pivot pins, said slots being open at one of their ends, said open ends intercepting the side 0! said cover opposite to the side carrying its said inwardly turned flanges. i
2. A match bookholder of a plastic material having a resiliency permitting a slight flexing without causing distortion comprising a base and a cover, said base having a rear wall and upstanding flanges lying in planes substantially,
normal to said rear wall, said cover having a front wall and upstanding flanges lying in planes substantially normal to said front wall, certain of said upstanding flanges on said cover havina slots therein with opposed walls extending in a direction perpendicular to said front wall and terminating in an open end at said front wall, and projections on certain of said upstanding flanges on said base extending perpendicularly to said upstanding flanges, said projections adapted to be inserted in said slots by the flexing of said cover.
3. A match book holder of a plastic material having a resiliency permitting a slight flexing without causing distortion consisting of two parts arranged in hinged relation, said parts comprising a base and a. cover each having a wall and upstanding flanges lying in planes substantially normal to said wall, the flanges on one of said parts having slots therein with opposed edges extending in a direction perpendicular to the wall of said part and terminating in an open end at said wall, and projections on certain of the upstanding flanges on the other part extending perpendicularlyto said upstanding flanges, said projections adapted to be inserted in said slots by the flexing of one of said parts.
4. A match book holder of a plastic material having a resiliency permitting a slight flexing without causing distortion consisting of two parts arranged in hinged relation, said parts comprising a base and a cover each having a wall and upstanding flanges lying in planes substantially normal to said wall, the flanges on one of said parts having slots therein substantially of .uniform width throughout with opposed edges extending in a direction perpendicular to the wall of said part and opening adjacent thereto, and pins on certain of the upstandingflanges on the other part extending perpendicularly to said upstanding flanges, said pins adapted to be positioned in said slots by the flexing of one of said parts and having a larger diameter in a direction longitudinally of said slots when said cover is in closed position, the movement of said cover to open position placing said larger diameter of said pins crosswise of said slots whereby to hold said cover inopen position.
5. A match book holder of a plastic material having a resiliency permitting a slight flexin without causing distortion comprising a base and a cover, said base having a rear wall and upstanding flanges lying in 'planes substantially normal to said rear wall, said cover having a front wall and upstanding flanges lying in planes substantially normal to said front wall, certain of said upstanding flanges on said cover having slots therein with opposed walls extending in a direction perpendicular to said front wall and terminating in an open end at said front wall, and pins on certain of said upstanding flanges on said base extending perpendicularly to said upstanding flanges, said pins adapted to be positioned in said slots and having a larger diameter in a direction longitudinally of said slots when said cover is in closed position, the movement of said cover to open position placing said larger diameter of said pins crosswise of said slots whereby to hold said cover in open position. JULES P. GI'I'S.