US672199A - Mold of linotype-machines. - Google Patents

Description

ml 672,|99. Patented Apr. l6, l90l. m. H. WHITTAKER & c. H. WEST.

MOLD 0F LINOTYPE MACHINES.

(Application filed Jan. 18, 1901.) (N0 Modal.)

N MOW @E F 712 UNITED STATES PATENT OFFICE.

MATTHEW HENRY WHITTAKER, OF SALFORD, AND CHARLES HENRY WEST, OF LEEDS, ENGLAND, ASSIGNORS TO THE MERGENTHALER LINOTYPE COMPANY, OF NEW YORK, N. Y.

MOLD OF LlNOTYPE-MACHINES SPECIFICATION formingpart of Letters Patent No. 672,199, dated April 16, 1901.

Application filed January 18, 190i. Serial No 43,799. (No model.)

f 00 whom it may concern: ing ribs on one side of the said body, there- Be it known that we, MATTHEW HENRY by producing what is practicallyat-aper lino- WHITTAKER, of Salford, in the county of Lantype, wider across the top than across its foot caster, and CHARLES HENRY WEST, of Leeds, by as much as the radius of the impressionin the county of Yorlz,England,have invented cylinder may render necessary to provide for certain new and useful Improvements in the the taper linotypes fitting close up to each Molds of Linotype-Machines; and we do hereother over their sides when they stand in the by declare the following to be a full, clear, above-described position on the impressionand exact description of the invention, such cylinder or in the'fudge-box. Hithertoapar- :o as willenable others skilled in the art to which allel linotype has been ejected or pushed out it appertains to make and use the same. of the mold of a Mergenthaler linotype-ma- The present invention relates to improvechine,printingedge first,betweenapairofparments in the molds of linotype-machines. allel knives which have trimmed off both its A linotype is a bar of type-metal as long as sides, and now if tapered linotypes are wanted 15 a column or a page of printed matter is wide the knife on the ribbed side of the linotype is 5 and having along one of its edges the typemoved out of workingposition. If,on theother faces duly composed, spaced, and justified hand, parallel linotypes are wanted, the said into words for printing a line. The mold for knife is left in working position. This cathe type-facesis constituted byaline of forma pacity on the part of the knife on the ribbed 2o tive cavities or matrices proper in a line of side of being moved out of working position matrix plates or bars, and that for the body and back again is no part of the present inof the linotype by a slot of the proper size in vention, being already well known.

a suitable block of metal. When -the two When leads -that is, linotypebodies molds just described are made to register onlyare to be cast in a linotype-machine,

25 with each other in the proper respective posithe mold for printing-faces is replaced by a tions and the back of the body-mold is closed, plate which closes the respective side of the melted type-metal is injected into the comslot 0. It is obvious that if the linotypes pound mold, a linotype being thereby cast. themselves must be tapered from printing The sides and ends of the slot above menedge to foot the leads must be tapered like- 30 tioned are parallel with each other, respecwise. That being the case the present inven- 8o tively, and all its angles are right angles, the tion is as applicable to the casting of one as linotype body having necessarily a correit is of the other.

sponding form. Consequently the linotypes Referring to the accompanying drawings, are not adapted when they are set on their which are to be taken as part of this specifi- 35 feet on an impression-cylinder with the said cation and read therewith, Figure 1 is a front feet parallel with the cylinder-axis to fit close elevation of a mold-block of the well-known up to each other over their sides, because the Mergenthaler linotype-machine made accordlatter are parallel with each other and only ing to the present invention; Fig. 2, a plan linotypes having tapering sides can fit up to of Fig. 1; Fig. 3, an inverted plan of the cap- 40 each other in such a position. This incapacity plate of the said mold-block; Fig. 4, a pers pec- 0 of parallel linotypes for fitting close up to tive view of a linotype cast in the improved each other over their sides does not matter mold-block, and Fig. 5 a section of three such in printing-offices where curved stereoplates linotypes. are used on the impression-cylinders; but it 1 is the cap-plate; 2, the bottom plate; 3 3,

5 makes itself felt whenever it is desired to the end liners, and t lthe screws holding the 5 print from linotypes held on the impressionfour parts togetherin the respective positions,

cylinder or in a fudge-box parallel with the thereby establishing the slot 0. The oppoaxis of the said cylinder. site faces of the plates 1 and 2 constitute the The object of the present invention is to above sides of the slot, and the opposite faces adapt the linotype body-mold to cast taperof the liners 3 3 the above-mentioned ends distance between the printed lines.

thereof. 5 5 are transverse grooves in the face of either the cap-plate l or that of the bottom plate 2. For convenience sake they arein the face of the cap-plate 1. Two only are shown; but that number may be increased. No matter how many there are they are arranged symmetrically along the said face. These grooves are shown as semicircular in cross-section. They may be of any one that will give the resulting ribs 6 6 a good bearing-surface against the adjacent linotypes '7; but they are all equally tapered from one end to the other, the depth at the deepest end being proportioned to the radius of the impression-cylinder on which the linotypes 7 cast in the slot 0 are to stand. The taper is gradual from the deepest end to practically nothing, or nearly to that, at the opposite end of the said grooves, as shown in Fig. 3, and is so positioned across the face of the plate that the deepest end is next to that side of the slot 0 with which, front or rear, as the case may be, the mold for the printing-faces on the linotype 7 registers.

We are aware that the specification of Letters Patent No. 436,532, dated September 16, 1890, describes molds for linotype-machines having transverse grooves of equal depth throughout in one of their plates to cast ribs on one side of each linotype, the function of such ribs being to increase the distance between the printing edges of the linotypes for the purpose of increasing the normal These grooves are hereinafter referred to as leading-grooves, but the essence of the present invention is not grooves as such nor the transverse position thereof. It is the tapered cross-section in a given direction of not less than two grooves. Nevertheless, if linotypes ribbed to increase the normal distance between the printed lines and tapered also are required the grooves 5 are deepened equally throughout their length accordingly, which will have the efiect of making them a combination of the leading-grooves above mentioned, with the plate 1 or 2 on one side and with the tapered grooves 6 on the other, the leading portion of the compound groove being of equal depth throughout, or the leading-grooves may be in one platesay the plate 1and the tapered grooves in the other.

9 is a spring-plate held by a screw 10 passed through one end of it down into the plate having the grooves 5. 11 is a small sphere having a portion of it less than one-half projected by the spring-plate 9 through a suitable hole 12 into the respective groove 5 near the deepest end of it. There is one plate 6 and sphere 8 combined with each groove 5, the object of such combinations being to prevent the taper of the grooves 5 contributing to the linotypes beginning to leave the slot 0 before the proper ejecting mechanism acts on them by engaging in notches 13 in the ribs 6.

We are aware that type-molds and linotypemolds have been provided with movable pins protruding into the mold and engaging the type or slug cast therein, such pins being combined with mechanical devices for retracting them in order to permit the ejection of the type or slug. In our structure the retaining device 11 is rounded and held to its place by a spring, the form and arrangement being such that when a pressure sufiicient to eject the slug is applied thereto the spheres or retaining devices will yield automatically and permit the escape of the slug. No mechanism is necessary for retracting the spheres, and it is their adaptability to operate automatically without the cooperation of controlling mechanism that forms the essence of our invention.

WVe claim- 1. A slotted linotype-mold having in one side a plurality of transverse grooves increasing in depth toward the forward side.

2. A linotype-mold having therein a slot of uniform thickness from front to rear, and also having on one of its inner surfaces a plurality of transverse grooves increasing in depth from one end to the other, wherebyit is adapted to produceaslug having a body of substantially uniform thickness with tapered ribs thereon.

3. A linotype-mold having a slot therethrough and tapered grooves in one wall of the slot, in combination with automaticallyyielding members projecting into said grooves to prevent the premature movement of the slug cast in the mold.

4. In a slotted linotype mold, rounded, movable members 11 to retain the slug in position, in combination with springs to hold said projections norm allyin engagement with the slug, whereby the retaining members 11 are adapted to yield automatically under the influence of the outgoing slug.

5. In a linotype-mold, a spring-supported device, adapted to yield when pressure is applied to the slug to effect its ejection from the mold.

In witness whereof we have hereunto set our hands in the presence of two witnesses.

MATTHEW HENRY WHITTAKER. CHARLES HENRI WEST.

Witnesses:

J OSH HY WHITAKER, JOHN HY WILLIAMSON.

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