US1328257A - Typographic composing-machine - Google Patents

Description

J. s. BANCROFT AND M. c. INDAHL.

TYPOGRAPHIC COMPOSING MACHINE.

APPLICATION FILED SEPT. 6, 1918- Patented Jan. 20, 1920.

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APPLICATION FILED SEPT. 6. 1-918.

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APPLICATION FILED SEPT. 6, 1918.

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APPLICATION FILED SEPT- 6, i918.

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J. S. BANCROFT AND M. C. INDAHL.

TYPOGRAPHIC COMPOSING MACHINE. APPLICATION FILED SEPT. 6. 1918.

1,328,257, Patented Jan. 20, 1920.

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TYPOGRAPHIC COMPOSING MACHINE. APPLICATION FILED SEPT. 6, 1918.

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'JOHN SELLERS BANCROFT AND MAURITZ c. INDAI-IL, or PIIILADELPHIA, PENNSYL- VANIA, ASSIGNORS T0 LANSTON MONOTYPE MACHINE COMPANY, or PHILADEL- PHIA, PENNSYLVANIA, A CORPORATION or VIRGINIA.

TYPOGRAPHIC COMPOSING-MACHINE.

Specification of Letters Patent. Patented Jan, 20, 1920,

Application filed September 6, 1918. Serial No. 252,929.

To all whom it may concern:

Be it known that we, J oHN SELLERS BAN- onorr and MAURITZ C. INDAI-IL, citizens of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Typographic Composing-dachines; and we do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

The present invention relates to improvements in type casting and composing machines being one embodiment of an improvement upon apparatus incorporated in the now well known Lanston monotype casting and composing machine. The embodiment of the invention adapted for illustrating the invention employs in part mechanism disclosed in Patent No; 962,412, June 28, 1910-, and a cellular matrix carrier or die case of a type disclosed in Patents Nos. 725,653, April 21, 1903, and.745,800, Decemher 1, 1903, and 784,245, March 7th, 1905..

In machines of the class indicated separate matrices are provided for the different characters, the desired number of such matrices being assembled in a carrier or case movably mounted'over a mold to bring any one of the matrices into casting position with relation to the mold. Mechanism for moving the matrix carrier to bring any desired matrix into approximately proper position over the mold is well understood and needs no further description herein, but

the importance and desirable accuracy and coordination of the parts for givingthe final accurate centering movement to the individual matrices, for advancing said matrices into contact with the mold and for firmly clamping the same, during the casting operation were not well understood or appreciated, with the result that the commercial machines'in some instances developed difiiculties such as deformation or bending and undue wear of the bars supporting the matrices in the die case or carrier, as well as undue wear on the anvil or matrix seating, face of themold and mat rices themselves, where they contact with the said bar supports or with the mold.

One of the objects of this invention is to overcome the difficulties enumerated and to provide means whereby each individual matrix brought to position over the mold by the die case or carrier will be. subjected to relatively light pressure during final centering, and while suspended in the case or carrier and then subjected to heavy clamping pressure only after it contacts with and is supported by the mold, at which time the carrier is relieved of its weight and pressure employed for final centering. A further object of the invention is to provide means whereby the application of the final clamping pressure may be controlled through the medium of a latch operated in accord with the relative movement of the matrix and centering pin through which the pressure 1s applled, to prevent excess pressure when such relative movement isshort and to insure the application of proper final clamping pressure whensuch relative movement is long.

The advantages of an arrangement of automatically acting mechanism for the pur-' I pose stated are apparent inasmuch as the final heavy clamping pressure is in effect automatically controlled by the distance from the mold" at which the centering and pressure pin or member is arrested in its forward movement as determined by the part (matrix, for example) interposed between them, and the arrangement may be such that when the. centering and pressure pin is arrested before seating in the matrix no clamping pressure whatever is applied.

In the accompanying -drawings, Figure 1 is a perspective view showing a part of the bridge and operating mechanism associated therewith, of a monotype casting machine embodying one form of the present invention;

Fig.1 is a perspective view of a portion .of Fig. 1 enlarged.

Fig. 2 is a vertical sectional view showing part of a die case and mold with theparts in normal or retracted position. (This corresponds to Fig. 7 of Patent No. 962,412)

Fig. 3 is a perspective view of the clamp ing pressure slide or member and springs;

Fig. 4: is a diagrammatic view showing the parts in position assumed when the matrix initially contacts with the mold and before clamping pressure is applied, the matrix being a conventional character ma trix;

Fig. 5 is a similar view after clamping pressure is applied;

Fig. 6 is a similar View with a low quad matrix in position over the mold but before contacting with the latter;

Fig. 7 is a similar view showing the parts advanced-until the matrix and pressure and centering pin are brought to rest against the mold.

Fig. 8 shows the position of the parts when clamping pressure is applied to a low quad matrix.

Many of the parts in the embodiment adopted for illustrating the invention correspond to parts illustrated in detail in PatentNo. 962,412 to which reference may be had for a description of their functions and operation, particularly in connection with the operation of the supplemental or low quad section of the mold blade, 2'. 0., to close the top of the mold cavity when a low quad is to be formed, thisbeing controlled by the arrest of the downward movement of the centering and pressure pin at an earlier stage in its movement than isthe case where a character type is to be cast.

A portion of the bridge of the casting machine is shown at 10, together with the carrying frame 11 for the sliding frame in which latter the die case or matrix carrier 12 is mounted to slide so that any one of the matrices 13 may be brought into position over the mold 1 1' by known mechanism responsiveto signals in a record or other approved means. The carrying frame is mounted on the lower ends of guide rods 14-. working in guides on the bridge and adapted to be elevated by springs 15. It is depressed to bring the desired matrix down to the mold by mechanism including across beam 16, a bridge lever 17 and the so-called centering pin lever 18 to which the bridge lever is connected by a link 19. The centering pin lever is operated in proper time from the cam shaft as usual, and serves as the operating means for the centering and pressure pin 20 workingvertically through the bridge, carrying frame and carrier directly over the mold and in position to cooperate with any-matrix brought to position beneath it to effect the final centering and in the present inventionto apply clamping pressure to it after it has been initially seated" on the mold. The mechanism for effecting the movementsof the centering pin is similar inall essential respects to that set forth in the patent last above referred to; In its essentials the mechanism embodies upper and lower centering pin spring abutments 21, 22, the latter being connected with the centering pin for depressing the same and the former loosely mounted thereon and adapted to communicate its motion to the former partly through a center pin spring 23. The abutment 21 is operated preferably through a direct connection with the lever 18, the upward movement of the pin being effected either by the direct action of the upper abutment '21, as in said patent, or through the instrumentality of lifting links 24 loosely connected with the lower abutment 22 and witli'a lifting yoke at the upper end. Below the lifting yoke is a screw 26 and trunnion block 27 to which one end of an auxiliary lever 28 is jointed.

The opposite end of the lever is jointed to the bridge by adjustable links 29and at an intermediate point is jointed to the bridge lever 17. Mechanism for controlling the low quad devices such as the supplemental mold blade in the apparatus illustrated, embodies a pair of tong levers jointed to the centering pin spring abutments and adapted by their relative movement to effect the desired end. These levers 29 and 30, commonly called the'centering pin abutment levers, are jointed to each other by a fulcrum link 31 adapted to, under some circumstances, take a bearing on an adjustable bridge bracket stop screw 31, while at their outer ends they are jointed respectively to a lifting tube operating fork 32 and a bridge bracket yoke link 32, the upper ends of the latter being jointed to the bridge bracket 33 by a link or yoke 34;. The lifting tube operating fork and the bridge bracket yoke link are provided with pivotal contacting abutments and 36 preferably guided in operative rela tion by a guide rod 37 carried by one abutment and working through a guide bearing in the-other.

For convenience of construction and assembling the upper tong lever is further provided with a lifting tube fork stop and control member in the form of a yoke 38, the upper end of which is guided on the lifting tube 39, said member 38 being proclamping pressure mechanism to apply 5 clamping pressure to the matrix after the latter has been centered and brought down on the mold.

For coiiperation with the fork 32 a clam ing pressure slide 41 is mounted on the yoke link 32 and normally seats on shoulders or stops 42 thereon, but is capable of a relatively vertical movement against the tension of clamping pressure springs 43 bridged between loracket or arm projections 44, on the clamping pressure slide and lower tong levers or bridge bracket yoke link 32 itself. The clamping pressure slide is provided with stepped shoulders or abutments 46,46 with either of which a co'ciperating abutment or shoulder 47 on the fork or latch .which the link and fork are mounted are normally held down with a yielding pres sure, as, for example, by spring 48 connected at one end with the link and at the other,

with the bridge or bridge bracket, and the abutments 85, 36 will be normally held in contact with the fork swung over so that its upper end would, if moved upwardly, pass the head extensions 49 of they spring box lifting tube, as shown, for example, in Figs. 2 and 4, under which conditions the centering pin has cooperated with a character matrix or is allowed to drop a considerable distance before its motion is arrested. Under these conditions the shoulders 46 on the clamping pressure slide and 47 on the fork come into engagement as shown in Fig. 4, when the matrix has been centered and seated on the mold and the weight and pressure on the matrix carrying bars of the die case relieved. Further movement of the upper centering pin spring abutment 21 then serves to elevate the fork and clamping pressure slide and the power thus expended is transmitted through the clamping springs 43 and lower lever .30 to the .centering pin and matrix. With respect to this clamping action it will be understood that there is a period of lost motion or the active function of clamping is not inaugurated until the clamping pressure slide begins its relative upward movement due to the engagement of the fork 32 there with and there may be a greater or less'preliminary movement of the fork which may be utilized in the setting of the low quad devices as described in said prior patent.

In order that the fork may be given a pivotal movement to bring its upper ends into position to engage the head projections 49 of the low quad spring box lifting tube and also to bring the abutment or shoulder 41 into position to engage shoulder abutment 46 of the clamping pressure slide a tension spring 50 is connected with the fork and with a Y bracket projection 51 on the yoke 38, thus tending to hold the abutments 35, 36 in contact and when the latter are separated by the relative. movements of the In the positions. shown in the last men- 'tionedfigures the centering pin'has been brought to rest at an earlier stage, due to the presence of a matrlx with a very sha'llow or no cone hole, and as a result the relative movement of the tong levers began I at a correspondingly early stage, thereby swinging the fork from the position shown in'Fig. 2 to that shown in Fig. 6 against the stops 40. Continued movement sets the low quad. mechanism through the elevation of the lifting tube 39, brings the matrix down on the mold, Fig. 7, and finally causes the shoulder abutments 46, 47 to engage and apply the clamping pressure, as shown in Fig. 8. The difference between the steps or abutment shoulders 46,46, is such that substantially equal clamping pressure is applied to the matrix when the pin enters a deep cone hole or advances a considerable distance before coming to rest and when itenters a shallow or no cone hole and comes to rest at an earlier stage in the cycle of operations ofthe machine.

, By the provision of a lost motion connection represented in the embodiment illustrated by the relative movement of the latch or fork 32and clamping pressure slide 41 it becomes practicable to provide for the centering and seating of the matrix with a relatively light yielding or spring action which will not wear either the matrices, the bars of the die case which support the matrices,

or the anvil or seat on the mold, and danger of bending the matrix supporting bars is eliminated. At the same time efi'ective clamping pressure may be applied after the matrix is seated and this pressuremay be made practically uniform for both high and low matrices or those matrices with which the centering and clamping pin has a longer or shorter movement before being brought to rest by the seating of the matrix on the mold, all without interfering with the low presure means and a lost motion connection for rendering effective the clamping pressure means after the matrix has been preliminarily centered and seated on the mold.

3. In a typographic composing machine, the combination of the following instrumentalities, to-wit: a mold, a matrix carrier, matrices loosely mounted therein and movablewith the carrier to seat on and transfer the load of the seated matrix to the mold, a centering and clamping pin cooperating with a, matrix over the mold to center, seat and clampthe same on the mold, means for moving the pin into envgagement with the matrix while supported in the carrier, means for applying.clamp.- ing pressure to the pin, and means for coupling the same with the pin after the engagement .of the pin with the matrix and the seating of the matrix on the mold. 4:. In a typographic composing machine, the combination of the following instrumentalities, to -wit: a mold, a matrix carrier, matrices mounted in the carrier and movable therewith to seat on the mold, a

centering and clamping pin for the matrices and operating mechanism therefor embodying yielding mechanism for advancing the pin into engagement with the matrix while the latter supported by the carrier, yielding clamping pressure mechanism, and means for coupling the same with the pin after the matrix has seated on the mold.

5. In a typographic composing machine,

the combination of the following instrumentalities, to-witz a mold, matrices, a matrix carrier movable toward the mold to seat a, matrix thereon, a centering and clamping pin for cooperation with the matrix to be seated, a power operated lever for advancing the centering pin, spring interposed between the lever and pin, a clamping pressure spring normally out of operative engagement with the pin, and means actuated by the power lever for operatively coupling said spring with the pin when the forward movement of the pin is arrested by the seating of the matrix. I

6. In a typographic composing machine, the combination of the following instrumentalities, towit: a mold, a matrix carrier,

matrices in said carrier and movable therewith to seat on the mold, a centering and clamping pin, a power lever, a spring for advancing the pin in accord with the movement of the lever, and a clamping spring mechanism including a member having stepped shoulder abutments and a relatively movable cooperating member, one ofsaid members being connected with the power lever, and a clamping spring interposed between the other member and the pin.

7. In a typographic composing machine embodying a mold, a matriX adapted to seat 011 the mold, a centering and clamping pin for cooperation with the matrix, an operating lever, and a spring through the medium (pf-which the operating lever transmits its movement to the pin and in combination therewith, a pair of floating tong levers connected at one end respectively with the pin and lever, a latch connected with the opposite end of one tong lever, a

clamping pressure slide with which the latch cooperates, and a clamping pressure spring interposed between said slide and the end of the other tong lever.

8. A typographic composing machine embodying a mold, a matrix, a centering and clamping pin, an operating lever and a spring interposed between the operating lever and pin and in combination there-- with, a clamping pressure mechanism embodying a pair of floating tong levers at one end connected respectively with the operating lever and pin," and a clamping pressure springinterposed between the opposite ends of the tong levers and 'free to move bodily in unison therewith but put under tension by relative movement of the levers.

9. A typographic composing machine embodying a mold,a matrix, a centering and clamping pin, an operating lever and a spring interposed between the operating lever and pin and, in combination therewith, a clamping pressure mechanism embodying a pair of floating tong levers at one end connected respectively with the operating lever and pin, and a clamping pressure spring mechanism embodying a slide, a spring co'nnectingthe slide and one of said'tong levers, a pivoted latch carried by the other of said tong'levers with-cooperating abutment shoulders on the slide and latch, and a spring for-moving said latch on its axiswhen relative movement of the tong levers takes place.

10. A typographic composing machine embodying a" mold, a matrix, a' centerin andclamping pin, an operating lever an a spring interposed between the operating lever and pin and, in -combination there'- with, a'*"clamping pressure mechanism' embodying a pair of floating tong levers at one end connected respectively with the operating lever and pin, and a clamping pressure spring mechanism embodying a slide, a spring connecting the slide and one of the tong levers a pivoted latch carried by the other tong lever with cooperating stepped abutment shoulders on the slide and latch, a spring for moving said latch resting said latch in position to engage one or the other of the stepped abutments shoulders in accord with the range of movement of the center and clamping pin. 15

JOHN SELLERS BANCROFT. MAURITZ C. INDAHL.

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