US1549227A - Machine for making stereotype molds - Google Patents

Description

Aug. 1 l, 1925.

C. N. SMITH I MACHINE FOR MAKING STEREOTYPE MOLDS Filed Julie 23. 1924 5 Sheets-Sheet l Aug. 11, 1925. 1,549,227

(2. N. SMITH MACHINE FOR MAKING STEREOTYPE MOLDS Fil.e 1 25. 1924 s Sheets-Sheet 2 c. N. SMITH MACHINE FOR MAKING STEREOTYPE MOLDS- Patented Aug. ll, 1925 llll'l fiw STATES @FFlQ-E.

CHRISTIAN N. SMITH, F ELGIN, ILLINOIS, AS'SIGNOR OF ONE-HALF TO WILLIAM P. TOPPING, OF ELGIN, ILLINOIS.

MACHINE FOR MAKING: STEREOTYPE MOLDS.

Application filed June 23, 1924. Serial No. 721,831.

To aZZwhomit may concern. of a rear plunger-head shown in Fig. 7 and Be it known that l, Crnusrmn N. SMITH, in Fig. 6; and Fig. 9 is a similar plan View a citizen of the United States, residing in of a front plunger head shown in Figs. 1, Elgin, in the county of Kane and State of 1, 5, and 7.

Illinois, have invented certain new and usein constructing a machine for tainping ful Improvements in Machines for Making and making stereotype molds or matrices in Stereotype Molds, of which the following is accordance with my invention, 1 provide a a specification. main frame 1, having upright frame mem- This invention relates to that class of mold bers 2 located on opposite sides of the ma.-

Zn or matrix-making machines which are chine, and having a base 3, or supporting adapted to be used for tainping or making legs, on which the upper or main frame is molds or matrices for use in making metallic supported. Longitudinal side frame memprinting plates, such, for example, as stereobers 4t, extend lengthwise of the machine, on type plates. opposite sides thereof. And lower trans- T he principal object of the invention is to verse frame members 5, and an upper turns 7 provide a simple, economical and etlicient verse member 6, extend across the machine. machine for tamping or making molds or The upper transverse member 6 is supported matrices for use in making metallic printing by and forms a connect-ion between the upplates, such for example as stereotype plates. per extrei'i'iities of the upright standards, or

3i) Other and further objects of the invention frame members, 2. And the lower frame will appear from the following description member, or members, 5 extends across the and claims, and. from an inspection of the machine and forms a rigid connection beaccompanying drawings which are made a tween the side frame members which are thus Part h f rigidly connected, so as to form a strong and The invention consists in the features, rigid a e ap d to Withstand t e combinations, details of construction, and stresses and strains to which the machine, i

arrangements of parts herein described a d subJeCted in use. A bed 7 is sup-ported upon hi i and extends across the space between the I fl accompanying d i longitudinal frame members at, l, and Fi 1 i a i i f t l ti 1 lengthwise of the machine between the 35 an improved tainping or mold-making nia- Si-QHClMClS slflc frame mbers 2, 2-

chine constructed in accordance with my inocated at one end of the machine, and

vention; Fig. 2 is a view in side elevation removably supported by the longitudinal of the machine shown in Fig. 1; Fig, 3 is frame members l, 1, is a table or bed 8, the

a view in elevation partly in central vertitop surface 9 of which is fiat, and substancal section with parts broken away and tially flush, or located in the same horizontal omitted, of a mold-making machine such as plane with the flat top surface of the main is shown in Figs. 1 and 2, but with a modi bed 7. The bed '7 is reciprocatingly mounted iied form of plungers; Fig. 1 is an enlarged upon the main frame in position to move detail view in'elevation of the plunger mechendwise or longitudinally of the latter, and

anism showing the front plunger and the to form a support fora type form or printplunger guiding means, and the bed shown lug-plate 10 to be laid thereon, and from in F' W 1 and 2, with matrix-forming mathe type or printing face of which the mold.

.l a type-form supported by the bed or matrix is to be made.

vable beneath the plungers; Fig. 5 The reciprocating bed '7 is, by preference,

a enlarged (retail view in horizontal secslidably mounted upon parallel longitudt tion taken on line 5 5 of Fig. l, looking nally extendinghorizontal tracks 11,11, each downward, showing the plunger-head conof said tracks being, by preference, fixed to struction; Fig. 6 is an enlarger detail View a corresponeing side frame member 4:, or

in elevation of the rear plunger or plunger formed integral therewith. The bed and head, with parts broken away; Fig. '7 is an tracks are provided with tongue and groove enlarged detail view in vertical section connections, comprising one or more tongues through the front and rear plungers or 12 fixed to one of said members, for example, plunger heads shown in Figs. 1, :2, l, 5 and to the bed, and each of said tongues extend- 6; I 8 is a detail plan view of a portion ing into and in sliding engagement with a no corresponding longitudinal guiding slot or groove 13 in the'upperface of a correspond ing adjacent track 11. (See Fig. 1).

The reciprocating bed 7 is provided with suitable operating 1 means whereby it is caused to move backward and forward or to reciprocate and carry with it the type form or printing plate 10 and thematrix forming material, matrix or mold 141 and to be operated upon. The means for operating or reciprocating and stopping and starting the reciprocating bed 7 may be of any desired, ordinary and well known, or suitable form.

In the form of the device herein shown, the bed is provided with alongitudinal depending toothed rack which extends along the under side of the bed and down ward between the bed-supporting tracks 11, 11; and a vtoothed driving wheel or spur gear 16 in toothed engagement with said rack and fixed to a shaft 17 which is journaled in suitable bearings 18, 19 in the main frame serves as a means for reciprocating the bed, and is adapted to serve as a means for connecting the bed 7 and toothed rack 15 with a source of power if desired. The shaft '17- is, by preference, provided with a hand wheel 20 fixed thereto thus affording a convenient means for operating the reciprocating bed manually when and as desired. And a driving shaft 21 journaled in, suitable bearingsin the main frame is operatively connected with the bed 7 and toothed rack 15 and with a source of power, such, for example, as an electric motor by means of a train of gears 23 which may be of any desired ordinary and well known or suitable form, or by gear and shaft or belt and pulley mechanism or other driving means and clutch mechanism all of which may be of any desired ordinary and well known or suitable form, and which it is therefore believed to be unnecessary to show or describe in detail herein otherwise. than as shown in the drawings in which the driving shaft 21 is shown provided with a driving pulley 24 fixed thereto, said pulley being 'operatively connected with the driving shaft 25 of the motor 22 by means of a belt pulley'26 fixed to the motor shaft and a belt 27 mounted on and operativcly connecting the pulleys 24 and 25. The driving shaft 21 is operatively connected with the bed 7 and toothed rack 15 already described, by means of a train of gears 23,

as already suggested, said train of gears comprising a spur gear wheel or 131I1l0l1'28 fixed to the rotative driving shaft 21 and in toothed engagement with a spur gear 1 Wheel 29 fixed to an int rmediate rotative shaft 30, Which is journaled in suitable bearings in the'frame and located intermediate the driving shaft 21 on which the belt pulley 24 is mounted, and the shaft 17 on which the rack-engaging spur gear or pinion 16 is fixed, for reciprocating the bed and toothed rack 15 engaged by said gear in Fixed to the intermediate shaft 30 is a spur pinion 31 which is in toothed engagement with a spur gear wheel 32 loosely'mounted on and adapted to be connected with and disconnected from the shaft 17 by means of clutch mechanism which may be of any desired ordinary and well known or suitable form. Means is thus provided for operab ing the bed 7 and its toothed rack 15 in one direction of the movement of the be, A reversing gear and clutch mechanism is provided which comprises an intermediate reversing spur wheel or idler 33 rotatively mountedon a suitable shaft or support and in toothed engagement with a toothed pinion or spur gear wheel 34 fixed to the intermediate shaft 30, said spur gear or idler 33 being also in toothed engagement with a spur gear wheel. 35 which is, by preference, loosely mounted on and adapted to be connected in fixed relation to and disconnected from the shaft 17 already described, by means of suitable clutch i'nechanism which may be of any desired ordinary and well known or suitable form. Suitable clutch mechanism is provided for connecting the spur gear wheels 32, successively or alternately with the shaft 17 on Which the racleengaging spur gear wheel or pinion 16 is fixed, and for releasing or disconnecting each of said gear wheels from said shaft 17 alternately or as desired. The clutch mechanism comprises a movable clutch member or members 36, 36 on and movable longitudinally of the shaft 17 into and out of clutching engagement with clutch members 37 and 38 respectively in successive order or alternately as desired, and adapted to be moved to neutral position or out of open tive clutching engagement with both ofsaid clutch members 37 and 38, so to leave both of the spur gear wheels and 35 out of engagement with or disconnected from the shaft 17, when desired. The clutch members 36, 36 may be in the form of frict-ion clutch members or of any desired ordinary and well known form, and, in the form shown in the drawings, said clutch members are soconnected with the shaft as to rotate therewith but are freely mov able longitudinally of the shaft into and out of clutching engagement with the clutch members 37 and 38 respectively, located on opposite sides of the said movable clutch members 36, 36. Suitable clutch-operating lever mechanismnot shownis provided for operating the clutch members 36, 36, and asthe clutclnoperating mechanism may be of any desired ordinary and well known form, and such clutches and clutch-operating mechanism are well known to those skilled in the art it is not deemed necessary or desirable to further describe or illus- .a-rds or upright frame members :2 in a plunger-operating crank shaft which connected with a motor or source of power in any desired ordinary and well kno manner, for example, by means of :2 pulley 41 fixed to said crank shaft a belt pulley 42 fixed to the driving shat or motor shaft 25, and a belt 43 mounted on and connecting said belt pulleys 41. and 42.

Operativcly connected with and supported by the phinger-operating crank shaft is a pair of reciprocating plungers 44, 45, each of which is operatively connected with the crank shaft 40 in such a manner as to enable the matrix-engaging members of the plungers to alternately engage or strike the matrix-forming material.

The plungers 44, 45, are mounted in parallel relation to each other in position to extend over and across the reciprocating bed 7 and transversely with respect to said bed and with respect to the path of movement of the bed and the type form, or printing plate, and matrix-forming material sup ported by the bed.

Each of the plungers 44, 45, comprises in its construction a pair of pitmen or connecting rods 46, 46, the upper ends of which are mounted upon corresponding cranks, eccentrics, or equivalent elements on or forming part of the plunger-operating shaft 40, which is, by preference, in the form of a shaft having two cranks or eccentrics connected with and supporting and adapted to operate the front plunger 44, and two cranks, eccentrics, or wrist pins, connected with and adapted to support and operate the rear plunger 45. The plungers 44, 45, are, by preference, of substantially identical construction, but differing in minor details of construction, and adapted to operate close together and in alternate order, so that one moves upward while the other is moving downward in making a stroke, and vice versa. Each of said plunger-s 44, 45, has a plunger head which is pivotally connected with and supported by the corresponding pit-men or connecting rods, 46. The head 47 of the front plunger 44, being connected with the frontpair of pitmen 46 by means f a horizontal rod or bar 48, and the plunger head 49, or rear plunger head, being pivot-ally connected with, and adapted to be supported and operated by, the rear pair of pitmen 46, by means of a similar horizontal, preferably round, rod or bar 50.

The rods or bars 48 and 50 each extend through horizontal openings 51 in the lower ends of the corresponding pitmen 46. And each of these plunger heads 47, 49, is provided at its opposite ends with an upright sliding block or shoe 52 mounted on the corresponding end of the horizontal rod or war 48, 50, and forming opposite end men bers of the respective plunger heads. These sliding blocks or end members 52 of the plunger head are slidably mounted between guiding members or ways fixed to the upright frame members 2, so as to form a gi'ziding slot or slots 54 in which the sliding blocks or end members 52 of the heads are slidably supported and guided. Each of the end members or sliding blocks 52 is provided with a horizontal opening into which the end of the corresponding rod or bar 50 extends. And each rod or bar 50 thus forms an upper horizontal member of one of said plunger heads 44, or 45, as the case may be.

Each of the plunger heads 44, 45, is provided with a pair of horizontal bars 55, 55, located side by side in parallel relation to each other, and spaced apart so as to provide a suitable space or spaces 56 therebetween, for receiving the head members by means of which said bars are connected with each other and with the upper head member 50 located above the bars 55 and the bottom plunger bar or head member 56 located below said bars 55, and yieldingly connected therewith, as hereinafter more particularly described.

Mounted between, and by preference, at or near the opposite ends of each pair of parallel side bars 55, 55, of each plunger head, respectively, are upright connecting brackets, or forked connecting arm members 5'7, each having a pair of upper forked arms 58 spaced apart and adapted to receive the lower end of a corresponding pitman 46 therebet-ween. Each of the forked arms 58 has a horizontal opening therethrough, through which extends a corresponding horizontal rod or bar 50, already described. Each of the plunger-head members, or connecting bracket members 57, has an upright central opening 59, which is, by preference, screwthreaded, and provided wit-h a screw tneaded vertical stem, or screw, 60 extending into and in threaded engagement with such opening, and projecting downward through and beyond the end of said member 5 and between the side bars 55, Each pair of side bars 55, 55, is provided with a pair of connecting blocks or bushings 61, each having an opening 62 therein, int-o and through which extends a corresponding vertical screw or stem 60. These blocks 61 are rigidly secured between the corresponding side bars 55, by means of beaded screws 63, or other suitable securing means, so as to connect the side bars at or near llU their opposite ends, in rigid suitably spaced apart relationv to each other, and form rigid connecting means between said'bars and the stems 60. Threaded nuts 6% are mounted on the stems between the blocks 61 and thebraclret members 57 and between said bracket members and the upper mar ginsoi' the side bars. And similar threaded nuts 65 are mounted in threaded engagement with the lower ends of the threaded vertical stems or screws 60, and provided with washers 66 between said nuts and the bottom faces of the blocks 61 and side bars 55. A. strong rigid connection is thus afforded betweenthe side bars 55 and the plunger head or frame member 57, said frame members 57 being connected with the upper plungerhead members or rods 50, as already described.

he end blocks 61 each havean upper end recess 67, adapted to admit the lower end of a corresponding sliding block or. end member 52, and permit the side bar 55 and end blocks 61 to bemoved or adjusted upon the stems 60, with respect to the blocks 52.

Each of the bottom bars 56 of the plunger-heads 44, 45, isyieldably connected with the corresponding side bars 55 by means of a series of upright studs or bosses 68 fired to and extendingupward from said bottom bars 56, respectively, and between.

the corresponding side bars 55. Angular bearing blocks 69, are mounted upon opposite sides of each upright stud or threaded stem 68, and between the-side bars 55, to which said blocks 69 are rigidly secured by means of headed screws 70, or other suitable securing means. Each of the blocks 69 is provided with a horizontal opening 71, which forms a journal bearing for a pivoted or rocking block, or bearing member 72,{mounted between said bearing blocks 69 and encircling a corresponding upright threaded stem 68, which extends through a suitable upright central opening 7 3 in such rocking or pivoted bearing block 68. Each rocking or pivoted bearing block 72 has a pair of laterally projecting trunnions, axle ends or similar pivoting supporting means 7% supported in the openings 71 in the angular bearing blocks 69. Each of the pivoted or rocking bearing blocks 72 is thus adapted to rock on a horizontal axis formed by the trunnions or pivots 74-, said axes being between and parallel to the side bars 55, 55 of the plunger head, and at right angles to the path of movement of the reciprocating bed 7 and the matrix or matrix forming material and type form or printing plate supported upon such bed. Compression springs 75, are interposed between the bottom faces of the pivoted or rocking hearing tom bar 56; and each of said springs, by preference, encircles and is held in :place looks 72 and the top face of the bot-- pitmen and the adjacent ends of the plunger head; and such plunger head is therefore provided with relatively short upwardly pro ecting stems 7 6 anchored inthe opposite end portions of the bottom bar 56, and each;

encircled by an end compression spring. 77 which is lnterposed between the .recessedend portion 7 8 of the adjacent end block: 61. and

the upper face of the bottom bar 56 near the end thereot.

vided with a securing collar or, split ring 7 8' which enclrcles the stem and is rigidlyse; cured thereto in any desired suitable manner, for example by means of a clamping screw 79 in the end portions. of the ring which are provided with suitable. perforations for receiving such screw, one of the.

ends being in threadedengagement with the screw, and the ring being rig dly secured to the bottom bar by screws or any suitable securing means. The other plunger head, for example, the plunger 45 has its pitmen or connecting rods located between the pitmen 64 of the front plunger 44, and has an upwardly projecting stem 68 located at or near each end of such rear plunger head and between each pitman and the adjacent end of the plunger; andthe rear plunger is here shown provided with two stems 68 and the springs located between the pitmen, while the front plunger in the form shown in the drawings has three stems 68 and springs 7 5 located between the pitmen 46. Any desired number of such stems and springs however, may be employed. And each of the stems 68 is provided with suitable means, such, for example, as an adjusting nut 80, and a lock nut 81 in threaded engagement with such stem and adapted to engage the upper face of the corresponding rocking or pivoted bearing block 72 and bar or bars 55, and adapted to limit the downward movement of the bottom bar 56 with respect to the upper plunger head members or bars 55 and rod or bar 50.

Compression springs 82, 82, are mounted on opposite sides of and adapted to engage each rocking or pivoted. or yielding stem 68 in such a manner as to permit but yieldingly resist the rocking or swinging move ment of the stems and of the bottom bar 56 fixed to the lower ends of such stems. I prefer to mount these springs 82 in the side bars 55 in position to engage opposite sides of each stem 68, respectively, below the level of the axes of the pivoted or rocking bear- (See Fig. 5.); Each of the stub stems 76 is, by preference, proing members 72, or below! the level of the horizontal axes of the stems, said axes corresponding with the centers of the hon- Z ontal axles or pivot or trunnion members i l already described. The movement of the bottom bar 56, and the imitrix-engaging tool, strip or member 8%, laterally with respect to the upper plunger members 55 and 50 is thus permitted but yieleingly resisted by the action of the side compression springs 82 which are held, preferably adjustably, in position, by means of headed screws 83 mounted in suitable openings in the side bars 55 and encircled by the corresponding springs 82, said springs 82 each having one end in engagement with the rocking bearing block 72 below the level of the horizontal axis of such block, and having the other end of such spring in abutting engagement with the inner face of a corresponding screw head or with any desired abutting element.

Firmly secured to the bottom and extending lengthwise of each bottom bar 56 of each plunger head is a matrix-engaging or mold-beating tool or device 8% which comprises a strip of rubber or similar materia 85 having a multiplicity of depending flexi blebosses, teeth or projections 86 suitably spaced apart on its under side and adapted to engage or strike and to be moved rapidly and repeatedly into and out of striking oi tamping contact or engagement with the mold or matrix-forming material during the operation of tamping, making or forming the mold or matrix. This tamping tool or strip is formed, by preferen e, of a strip of wood 84; having laterally projecting up per edge portions or upwardly and out wardly inclined side marginal surfaces adapted to be detachably clamped between inwardly projecting flanges or bottom edges of the bottom bar 56 and a detachable side clamping strip or bar 87 which is removably secured to the side of the bar 56 by means of headed screws 88 or any desired ordinary and well known securing means; said strip of wood having a bottom strip 85 of flexible material, such for example as rubber, attached to the bottom face of the wooden strip by means of strong glue or adhesive material, or other suitable securing means, and said bottom strip 85 having projections 86 of rubber or similar flexible material suitably spaced apart and adapted to strike and tamp and rapidly and repeatedly plunged int) and out of contact with the mold or matrix-forming material while such material is in a compressible or yielding and sufficiently soft or plastic condition to be forced into the spaces and interstices in the printing side of a type form or printing plate, or into close contact with the printing side of such type form or printing plate, so to make a matrix or mold to be used in making-a stereotype plate, or any printing plate which can be made by using such a mold or matrix.

By making the strip 84 of wood instead of metal, it will be suliiciently strong for the uses and purposes for which it is employed, and sul'liciently frangible or breakable to be crushed or broken when subjected to unnecessary or undesirable or accidental stresses and strains which might, without such crushing or breaking of the wooded strip, cause injury to the machine or the work or material to be operated upon, or endanger the machine, the work or material operated on.

From the foregoing, it will be readily understood by those skilled in the art, that the plungers are adapted to be rapidly and re peatedly moved into and out of striking or 'amping contact or engagement with the sheet of matrlz: or mold-formmg material to be operated upon, while the latter is moving with the type form or printing plate on which the matrix-forming material is laid, and with the bed on which the type form or printing plate and sheet of matriX-forining material is supportedbeneath the plungers; and that the matrix-engaging members of the plungers are adapted to yield or to be moved or rocked upon a horizontal axis or pivotal center which axis is at right angles to the path of movement of the horizontally moving reciprocatory bed and of the type form or printing plate and matrixforming or mold-forming material to be operated upon, thus permitting the matrix-engaging men'ibers of the plungers to move with the man-informing material or mold while such matrix-engaging members and matrix-forming material are in actual contact, and without interfering with or affecting the uniform and direct upward and downward movements of the other plunger members to which the bottom plunger bar and matrix-engaging parts of the plungers are pivotally or rockingly connected.

The usual brake mechanism 90, which may be of any desired ordinary and well known or suitable form, is provided, for stopping the machine when desired. The brake here shown comprises a brake shoe 91 on a pivoted brake arm or lever 92 and adapted to frictionally engage the face of the belt pulley. An operating lever 93 is operatively connected with the brake shoe lever 92 in any suitable or ordinary manner, for example, by means of a lever 94 which is adapted to operatively engage and tighten or release the brake shoe, and a connecting rod 95 which is connected at one end with the brake-operating lever 93 and at its other end with the lever 94, which may also support a belt-tightening pulley 96,

A hand lever 97 is operatively connected.

with the clutch mechanism above described, in any ordinary and well known manner.

tomatic bedactuating or stopping and starting or controlling meansnot shown such, for example as re shown in Letters Patent No. 1,379,317, dated May 24-, 1921, "tor an improvement in machines formaking stereo But as automatic stopping or type molds. controlling means adapted to automatically stop and release a reciprocating bed or supporting table is shown in said patent, and is well known to those skilled in the art, itis not deemed necessary or desirable to describe the same, or the electric switch mechanism for stopping and starting the electric motor, or the means for stopping and starting the machine or any of its parts, otherwise than as herein shown and described, or as shown and described in said patent.

A receptacle or. box 98 is for containing any necessary switch mechanism or other parts.

Matrix-engaging rolls 99, 99 are located on opposite sides of the reciprocating plunger mechanism and adapted to engage and hold down against the top face of the printing plate or type form a sheet or sheets of matrix-forming material to be tamped or operated upon by the reciprocating plunger mechanism. These rolls 99 are each supported in suitable hearings in the upwardly and downwardly freely movable outer ends of supporting arms 100, pivotally mounted on the frame of the machine by means of supporting bolts or pivots 101, as shown in Figs. 2 and 3, the supporting bolts or pivots being, by preference, anchored in the upright side frame members 2 adjacent to opposite ends of the reciprocating plungers, and in position to movably or adjustably support the rolls 99 on opposite sides of the plungers and to permit the plungers to opcrate between said rolls, and between the pivoted roll-supporting arms and their supports 101. 1

lVhile I have described a pair of plungers and the means for operating the same, it will be readily under-stood by those skilled in the art, in view of the foregoing description, that one or any desired number of these plungers,'0r any desired number of pairs of the same, may be employed and that other modifications may be made in the plungers and in other parts of the machine without departing from the spirit of my invention.

In Fig. 3 is shown a pair of reciprocating plungers which are supported and operated in all respects as above described and shown and which may be constructed in all respects as described and shown in or with reference to the other figures of the accompanying drawings. But in the form shown in said Figure 3, the plunger heads 44 or the parts thereof which correspond with or comprise the parts 55, 55, 57, 57, 58, 58, 52, 52, 69 69, 61, 61 are all made in one integral piece. In all other respects the plungers and plunger heads or plunger parts shown in Fig. 3 are made and adapted to operate as already described in connection with or in reference to the other figures of the drawings.

I claim:

1. In a machine of the class described, an upwardly and downwardly movable reciprocating plunger comprising upper and lower plunger members connected in movable relation to each other and adapted to permit the movement of such lower plunger member at an angle with respect to the direction of movement of the upper plunger member.

in a machine of the class described, the combination of an upwardly and downwardly movable reciprocating plunger comprising an upper plunger member and a lower plunger member pivotally connected with said upper plunger member and adapt ed to swing upon its axis at an angle with respect to the direction of movementof said upper plunger member and means for op erat -g the plunger.

In a machine of the class described,

the combination of an upwardly and downmovable reciprocating plunger comupper and lower pirotau connected members adapted to permit the cment of the lower plunger member on its axis. means for permitting and yieldingl resisting the movement of the lower plur' nember on its axis. and means for opera the plunger.

a. In a machine of the class described, the combination of a reciprocating plunger comprising pivotally connected plunger members adapted to permit the movement of one of said plunger members upon its axis at angle-with respect to the direction of reciprocatory movement of the other of said pivotally connected plunger members, means for o erat-ively connecting one of said plunger members with an operating shaft. and means for guiding theplunger.

5. In a machine of the class described, the combination of a reciprocating plunger comprising upper and lower pivotally connected plunger members adapted to permit the moyement of the lower plunger member upon its 9X18 at an angle with respect to the direction of movement of the upper plunger member, means for permitting and yieldingly resisting the movement ofthe lower plunger member with respect to the upper plunger member, and a rotative plunger-op- Jun crating crank shaft operatively connected with said upper plunger member.

6. In a machine of the class described, the combination of an upwardly and downwardly movable reciprocating plunger comprising a plunger-head having upper and lower pivotally connected plunger-head members, resilient means on the plungerhead adapted to permit and yieldingly resist the movement of the lower plunger-head member on its axis with respect to the upper plunger head member, a plunger operating shaft, and means for operatively connecting the plunger-operating shaft with the plunger-head.

7. In a machine of the class describeth the combination of an upwardly and down wardly movable reciprocating plunger comprising a plunger-head having upper and lower pivotally connected plunger-head members adapted to permit the movement of the lower plunger-head member transversely with respect to the upper plungerhead member, a plunger-operating shaft rotatively mounted above the plunger-head, and pitman mechanism connected with the plunger-head and with the plunger-operating shaft and adapted to be operated by the latter.

8. In a machine of the class described, the combination of a reciprocating plunger com prising a plunger-head having upper and lower pivotally connected plunger-head members adapted to permit the movement of the lower plunger-head member upon its axis transversely with respect to the upper plunger-head member, resilient means on the tilunger-head adapted to permit and yieldingly resist the upward movement of the lower plunger-head member with respect to the upper plunger-head member, a plunger-operating shaft rotatively mounted in a suitable support, and means for operatively connecting the plunger-operating shaft with the plunger head.

9. In a machine of the class described, the combination of a reciprocating plunger having upper and lower pivotally connected plunger-head members, resilient means on the plunger-head adapted to permit and yieldingly resist the movement of the lower plunger-head member on its axis with respect to the upper plunger-head member, resilient means on the plunger-head adapted to permit and yieldingly resist the upward movement of the lower plunger-head member with respect to the upper plunger-head member with which said lower plungerhead member is pivotally connected, and means for operatively connecting the plunger-head with the plunger-operating shaft.

10. In a machine of the class oescribed, the combination of a reciprocating plunger comprising a plunger-head having upper and lower pivotally connected plunger-head ers, means for permitting and yieldresisting the movement of the lower .iger-head member on its pivotal axis with respect to said upper plunger-head member, resilient means on the plunger-head adapted to permit and yieldingly resist the upward movement of the lower plungerhcad member with respect to said upper plunger-head member, and means for operating the plunger.

11. In a machine of the class described, the combination of a reciprocating plunger having upper and lower pivotally connected plunger members, means for permitting and yieldingly resisting the movement of the lower plunger-head member on its axis with respect to said upper plunger-head member, resilient means adapted to permit and vieldinqly resist the upward movement or the pivoted lower plunger-head member with respect to the plunger member with which said lower plunger member is pivotally connected, a plunger-operating crank shaft, and means for operatively connecting the crank shaft with one of said pivotally connected plunger members.

12. In a machine of the class described,

the combination of a reciprocating plunger comprising a plunger-head having upper and lower pivot-ally connected plunger-head members, resilient means on the plungerhead for permitting and yieldingly resisting the movement of the lower plunger head member on its axis, resilient means on the plunger-head adapted to permit and yieldingly resist the upward movement of tl e lower pivoted plunger-head member with respect to the plunger-head member with which said lower plunger-head member is pivotally connected, means for guiding the plunger head, a plunger-operating shaft rotativcly mounted in suitable bearings, and connecting mechanism pivotally connected with said plunger-head and opcratively connected with said plunger-operating shaft.

13. In a machine of the class described, the combination of a reciprocating plunger compriging upper and lower plunger-head members, means for flexibly connecting said upper and lower plunger-head members, said connecting means being adapted to permit the lower plunger-head member to .nove up ward and downward with respect to said upper plunger-head member, resilient means for permitting and yieldingly resisting the movement of the lower plunger-head member with respect to said upper plungenhead member, means for guiding the plungerhead, and means for operating the plunger. i i. In a machine of the class described, the combination of a reciprocating plunger comprising upper and lower pivotally connected plunger head members, spring mechanism on the plunger-head adapted to permit and yieldingly resist the movement of the lower plunger head member on its axis, means for permitting and yieldingly resist ing the upward movement of said lower pivoted plunger-head member with respect to the upper plunger-head member, a rotative plunger-operating shaft operatively connected with the plunger, and means for guiding the plunger.

if). in a machine of the class described, the combination of a reciprocating plunger comprising upper and lower relatively movable plunger members, pivoted bearing blocks rockingly mounted in one of said plunger members, upright stems anchored in the other one of said plunger members and slidable in said pivoted bearing blocks, spring mechanism on the plunger adapted to permit and yieldingly resist the upward movement of the lower one of said plungerhead members with respect to the upper one of said plunger-head members, spring mechanism on the plunger adapted to permit and yieldingly resist the movement of said lower plunger-head member 011 its axis with respect to the said upper plunger-head memher, a plunger-operating shaft, and means for operatively connecting said plungerhead with the plunger-operating shaft.

16. In a machine of the class described, the combination of a reciprocating plunger comprising upper and lower plunger-head members, means for pivotally connecting said upper and lower plunger-head mem bers, spring mechanism on the plunger head adapted to permit and yieldingly resist the movement of the lower plunger-head member on its axis with respect to said upper plunger-head member, spring mechanism on the plunger-head adapted to permit and yieldingly resist the upward movement of the lower plunger-head member relatively to the upper plunger head member with which said lower plunger member is pivotally connected and means for operating the plunger.

17. In a machine of the class described, the combination of a reciprocatng plunger comprising upper and lower pivotally connected plunger members, means for permitting and yieldingly resisting the upward movement of the lower one of said pivotally connected plunger members relatively to the other, spring mechanism adapted to permit and yieldingly resist the movement of-the lower one of said pivotally connected plunger members on its axis with respect to the other one of said pivotally connected plunger members, a crank shaft rotatably mounted in a suitable support and operatively connected with said plunger, and means for guiding the plunger.

18. In a machine of the class described,

the combination of a reciprocating plunger comprising upper and lower flexibly connected plunger members, resilient means adapted to permit and yieldingly resist the ugward movement of the lower one of said pivotally connected plunger members relatively to the other, resilient means on the plunger adapted to permit and yieldingly resist the lower one of said pivotally connected plunger members on its axis relatively to the other one of said pivotally connected plunger members, av bed mounted on a suitable support and adapted to move beneath said plunger, for supporting moldmaking material tobe operated upon in position to be engaged by the plunger, means for operating the bed, and means for operating the plunger.

19. In a machine of the class described, the combination of a reciprocating plunger comprising upper and lower flexibly connected plunger members, resilient means adapted to permit and yieldingly resist the upward movement of the lower one of said flexibly connected plunger members with re spect to the other, resilient means on the plunger adapted to permit and yieldingly resist the movement of the lower one of said flexibly connected plunger members at an angle to the direction of movement of said 'upper plunger member, a movable bed mounted on a suitable support and adapted to support and feed mold-making material to be operated on in position to be progressively operated upon by the plunger, and means for operating the plunger.

20. In a machine of the class described, the con'ibination of a reciprocating plunger comprising upper and lower pivotally connected plunger members, resilient means adapted to permit and yieldingly resist the upward movement of the lower one of said pivotally connected plunger members rel atively to the other, resilient means on the plunger adapted to permit and yieldingly resist the movement of the lower one of said pivotally connected plunger members on its axis relatively to the other one of said pivotally connected plunger members, a movable bed adapted to support mold-making material in position to be operated upon. progressively by said plunger and in engagement with a type form or printing plate supported by such bed, means for operating the bed, and means for operating the plunger.

' 21. In a machine of the class described, the combination of a plurality of reciprocating plungers each comprising a plunger having upper and lower plunger members connected in movable relation to each other, resilient means adapted to permit and'yieldingly resist the movement of such lower plunger member with respect to the upper plunger member with which the same is V movably connected, 9. rotative plunger-operating shaft upon which both of said reciproerated upon by said plungers in the operation of making a matrix or mold for making printing plates, means for operating said bed, and means for operating the plungeroperating shaft.

23. In a machine of the class described, the combination of a plurality of reciprocating plungers comprising a plunger having flexibly connected upper and lower plunger members, a rotative plunger-operating shaft upon which both of said plungers are operatively supported, means for guiding said plungers, a movable bed adapted to support matrix-making material movably in position to be operated on by'the plungers, means for operating the bed, and means for driving the plunger-operating shaft.

24:. In a machine of the class described, the combination of a plurality of reciprocating plungers each comprising a plunger having pivotally connected upper and lower plunger members, a rotative plunger-operating shaft upon which both of said plungers are operatively supported, a movable bed adapted to support and feed matrix-making material in position to be operated upon by said plungers, means for operating the bed, and means for driving the plunger-operating shaft.

25. In a machine of the class described, the combination of a plurality of reciprocating plungers each having flexibly connected upper and lower plunger members, resilient means on each of said plungers adapted to permit and yieldingly resist the movement of the lower plunger member of each plunger with respect to the upper plunger member with which such lower plunger member is flexibly connected, and means for supporting matrix-making material to be operated on in position to be operatively engaged by said plungers alternately, and means for operating said plungers.

26. In a machine of the class described, the combination of a plurality of reciprocating plungers each having flexibly connected upper and lower plunger members, resilient means on each of said plungers adapted to permit and yieldingly resist the movement of the lower plunger member of such plunger upward relatively to the upper plunger member with which such lower plunger member is flexibly connected, means for supporting matrix-making material in position to be operated on progressively by said plungers, and a rotative plunger-operating shaft upon which both of said plungers are operatively supported.

27. In a machine of the class described, the combination of a plurality of reciprocating plungers each having pivotally connected upper and lower plunger members, resilient means on each of said plungers adapted to permit and yieldingly resist the movement a lower plunger member on its axis with respect to the upper plunger member with which such lower plunger member is pivotally connected, resilient means on each plunger adapted to permit and yieldingly resist the movement of the lower plunger member of such plunger upward relatively to the upper plunger member with which such plunger member is pivotally connected, a bed movable beneath the plungers and adapted to movably support material to be operated on in position to be engaged by said plungers, a plunger-operating shaft rotatively mounted above the bed and in supporting engagement with both of said plungers, and means for operating the plungeroperating shaft.

Signed at Chicago, Illinois, this 16th day of June, 1924.

CHRISTIAN N. SMITH.

Witness:

HARRY I. CRoMER.

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