US2612836A - Equipment for striking type characters - Google Patents

Description

A. BAUER EQUIPMENT FOR STRIKING TYPE CHARACTERS 7 Filed Feb. 26, 1948 Oct. 7, 1952 3 Sheets-Sheet l INVENTOR ALF/P60 5405/ ii! ii ATTO R N EY Oct. 7, 1952 A. BAUER 2,612,836

TERS

Oct. 7, 1952 A. BAUER EQUIPMENT FOR STRIKING TYPE CHARACTERS 3 Sheets-Sheet 3 Filed Feb. 26, 1948 INVENTOR ALFRED BAUE Y E N R O T T A Patented Get. 7, 1952 ream/meson STRIKING TYPE enmmcrnns Alfred Banenle Locle, Switzerland Application February 26, 1948, SerialNo. 11,058. In Switzerland July 20,1946

' Section ama-Law ssa'Augt s}, 1946 Patentfexpires July-*20,' 1966;;

bounding between them as'pa'ce'which'is" wider than the stem of the type character to be ob tained, and of at least one shim or spacing block of hardened steel filling up a part of this space so as to bound aspace exactly "corresponding to the shape and dimensions, not modified -by the striking of the stem with its rece'ssed'or prominent parts, the said shim or spacing block having perfectly plane surfaces fitting the space bounding surfaces of the die. Y

The adjacent parts of the die'boundingbetween them the space designed to receive'the spacing block or blocks and the blank to' be struck may be approximately .C-shaped' or substantially L-shaped in horizontal cross section. In this latter case, more particularly the spec ing block may advantageously havean oblique lateral face fitting withanohlidueinternal sure face of one of the parts of the die, fin-orderto facilitate, after the striking, the separation of the two parts of the die underthe action of the internallpressureoi the type struck. I; Otherobjects and advantages of the invenv tion will be gathered from the iollowingflde scription, given by way of example, of somev forms of construction of the equipment illustrated in the accompanying drawings, inwhichg. Figures 1 to 4 relate to a first form ofmon: struction, Fig. 1 being a perspective view of a blank and spacing blocks utilized for striking this blank, Fig. 2 beinga top plan view of the die as a whole mounted for striking, and Figures- 3 and 4 being partial sectional elevations on the line IIIIII of Fig. 2 before and after. striking respectively; Figure 5 is a top plan view of a second form of construction of the die, ready for striking;

Fig. 6 is a view in perspective of a shim or spacing block utilized-with this form of construction; Fig. 7 is a view in perspectiveof another shim orspacing block utilized with 'thisi'orm of con struction and struction: v I

F'ig. 8 is'a horizontal'sectional plan of-a third form of construction of the die,ready for striking; t -"L Fig. 9 is a perspective view of a shim ors pacin'g'block utilized-with this third form of con- Fig; 1c is a perspective vievwof another" shim or spacing block utilized with this third form of construction.

r The striking equipment illustrated in 1' to 4 is'designedfcr striking types of calculating machines having a stemwith transverse studs and a head which is wider'than the stem. This equipment comprises astampor punch; not shown, and a die, shown inFi'g. 2 in top plan view. This die is composed of two adjacent parts or jaws l and 2; held gripped against one another by gripping means not shownfand bounding between their adjacent walls, in the direction ofthe-heig'ht, a free-space AB-C--D of square horizontal cross section- The parts I and 2' of the die are approximately'C-shaped in horizontal cross section- In 'thespace AB C'D is' arranged for striking a cut-out blank 3; comprising a stem 4 of cross section A-jE-F--G',' two transverse studs 5 and 6, designed 'for fixing thetype' to the type bar, and a transverse stud 1 designed to form the head of the' type. The-transverse studs is'of rectangular horizontal cross-section A-E-LM, and'thefupper and lower transverse studs '1 and 5 are of rectangular horizontal 'cross section A --EI '-K; In order to hold up the blank for the striking, the space A-BCD between the parts I- andZof the die is in part filled by two spacing'blocks' or shims 8 and 9 of hardened steel. The spacing block 8 is of a breadth D-N, equal tothe breadth A-Eof' the blank 3", and is provided with three transverse recesses l0, and lZgthe dimensions of which co'rrespond exactly to those of the studs 5,; 6 and l of the blank 3,-before-striking. The spacing'block' 9 is a- 'rectan'gular parallelipiped, 'ofhorizontal cross section EB--C--N, and is provided at its'upper end with a recess 13, of horizontal cross section E-'EI'--I. When the blank 3 andnboth the spacing blocks 8 and" 9 are in position between the parts I and 2 of the die,

which aregrippedagains't one another, the stem Figures on the wall surface of the recess I2 of the spacing block 8. The space E--E'--I'I which has remained free, is bounded by the walls of the recess 13 of the spacing block 9 and by the blank. The top of the blank extends above the upper surface of the die and of the spacing blocks, so that when a blow is struck by means of the stamp upon the top of the blank, the stud I is crushed, and fills up the space EE'--I- I of the recess [3, thus forming the head of the type wider than the stem 4, and bearing in relief the sign [4, indicated in Fig. 4.

This equipment enables of using for the striking blanks which are already machined by simple and economical methods such as by cutting-out, punching, turning, which working methods can not be used upon coined blanks without damaging the signs. Whatever the profile of the machined blank may be, the spacing blocks do closely fit the shape thereof and present to the adjacent parts of the die contact surfaces which are perfectly plane, thus enabling the blank and spacing blocks assembly to be easily extracted as a whole unit without loosening the parts of the die by more than a few hundredths of a millimeter.

In the second form of construction shownin Figures 5, 6 and 7, the two parts I and 2 of the die have what may be described as an approximately L-shaped horizontal cross section, and their adjacent faces form the boundaries of a cavity A-BCD, of which the breadth, which is uniform throughout its height, corresponds to that of the head of the type to be struck. A portion BCEF of this cavity is filled up, to a height corresponding to that of the type stem, by a removable spacing block I8 of tempered steel, illustrated separately in Fig. 6. ,For the striking, a blank is. used, the rectangularv horizontal cross section of which is uniform throughout its height, and corresponds to the area AFE-D, bounded by the spacing block I8 and the internal wall surfaces of the parts I and 2 of the die. One of the parts I andv 2 of the die is fixed and the other movable.

Figure 7 illustrates a shim or spacing ..b1ock of more complex shape,"comprising a parallelopiped-shaped body [9 and a longitudinal rib l9 having a recess so as toform a clear space for the accommodation of a projecting portion of the blank utilised for the striking; In Fig. 8, the two adjacent partsl and 2- of the die, gripped against one another by'gripping means not shown, are of substantially L-shaped horizontal cross section as in the preceding example, but whereas the inner wall surface A-B of the smaller branch of the part I is perpendicular to the inner wall'surface A D of the larger branch, the inner wall surface;C--D of the smaller branch of the part 2 makes an ob-, tuse angle with the inner wall surface 13-0 of the larger branch of this part 2. When the parts I and 2-'0f the die are assembled, theyform the boundaries of a trapezoidal space A-B-CD, which is wider than'the stem of the type to be struck. A prismatic spacing block 28, which is of trapezoidal horizontal cross section and is of less depth than the cavity A-BCD, fills up apart of this cavity corresponding to the area CD-E,F.,- This spac ing block 28 has an oblique lateral surface. 28'; which cooperates with the oblique; .wall surface CD of the part 2 of the die. When the type has been struck-upon a blank of uniform breadth and thickness filling the cavity A-B-F-E, and when the parts I and 2 of the die have been freed from their gripping means, the internal pressures of the type struck act upon the spacing block 28 in the direction of the arrow ,1. The oblique face 28' of the spacing block 28 slides upon the oblique face CD of the part 2, thus facilitating the detachment of the two parts of the die and the removal as a whole unit of the type and spacing block assembly.

The spacing block 29 shown in Fig. 10, which may be substituted for the spacing block 28, presents a prismatic body of trapezoidal horizontal cross section, the oblique face 29' of which is designed to co-operate with the oblique face CD of the part 2 of the die.

The spacing block 29 has, on its face forming the side E-F of the cavity for the blank, projecting parts 30 and 3| bounding spaces 32, 33 and 34 designed to receive transverse studs presented by the blank when it is a question of striking a type the stem of which is already provided with the studs necessary for fixing it to the type bar.

When the blank to be struck has studs or like prominent parts on more than one of its faces, use will be made of a plurality of spacing blocks similar to the one described in order that all of the faces of the blank and spacing blocks assembly which are designed to co-operate with the inner wall surfaces of the die be perfectly plane to allow the said assembly to be easily extracted from the die as a whole unit without loosening the gripping means by more than a few hundredths of a millimeter, and this extraction being facilitated here by the cooperating obliquesurfaces 29' and C-D of the spacing block and of the part 2 of the die, respectively.

What I claim is:

1. In a device for striking type for typewriting or calculating machines of the kind which comprise a stem having on at least one side prominent or recessed parts, a die formed from two adjacent parts bounding between them a space of which at least one of the horizontal dimensions is greater than the corresponding dimension of the stem of the type to be obtained, at least one removable spacing block filling up a part of said space and adapted to be inserted in said space and to be removed therefrom without opening thedie, said spacing block bounding a space exactly corresponding to the shape and dimensions, not modified by the striking, of the stem to be obtained with its recessed and prominent parts, said spacing block having a vertical lateral face disposed obliquely with respect to the other vertical lateral faces of the block and one of the parts of said die having an oblique vertical face cooperating with the said oblique face of the spacing block whereby to facilitate, after striking, the separation of the two parts of the die under the action of the internal pressure of the type struck.

2. In a device for striking types of typewriting or'calculating machines, a die formed from two adjacent parts bounding between them a space including an acute angle, both sides of which are formed by said parts, a removable spacing block of hardened steel inserted in said space and bounding a space exactly corresponding to the shapeand dimensions of the stem of the type inserted in the die, said spacing block being provided with an acute extension exactly fitted in saidacute angle. whereby said extension acts as a wedge in helping to separate said adjacent die parts one from the other, after striking, to allow 5 6 extraction of the type and spacing block assembly Number Name Date as a whole. 369,778 Davis Sept. 13, 1887 ALFRED BAUER. 427,716 Travis May 13, 1890 455,541 Cooke July '7, 1891 REFERENCES CITED 5 745,208 Little Nov. 24, 1903 1,153,965 Singewald Sept. 21, 1915 g i f g j ffi are 0f m the 1,690,917 Wilcox Nov, 6, 1928 1,802,299 Wine Apr. 21, 1931 UNITED STATES PATENTS 1,855,855 Gillis Apr. 26, 1932 Number Name Date 10 2,278,29 Watson Mar. 31, 1942 135,406 Chapman Feb. 4, 1873

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