US1085618A - Duplicating-machine. - Google Patents

Description

H. GJLIEBENTHAL.

DUPLIGATING MAGHINE.

APPLICATION FILED SEPT. 23, 1913.

Patented Feb. 3,1914.

8 BHEBT$-SHEET 1.

INVENTO IV 20 271 17 F161 WITNESSES:

H. G. LIEBENTHAL.

DUPLIGATING MACHINE.

APPLICATION FILED SEPT. 23, 1913.

1 ,085,6 1 8, Patented Feb. 3, 1914.

8 SHEETS-SHEET 2.

FIG H 4 L L 6 W FIGJIZ 37, Flaw Z331 3233 .20 32272 Z8 WITNESSES: TOR:

f" 7M1, I W L f H. G. LIBBENTHAL. DUPL'IGATING MACHINE.

APPLIOATION FILED SEPT. 2a, 1913.

1,085,18, Patented Feb. 3, 1914.

8 SHEETS-SHEET 3.

WITNESSES: |NVENTOR:V

HERMAN G. LIEBE'NTHAL, OF PHILADELPHIA, PENNSYLVANIA.

DUPLICATING-MACHINE.

Specification of Letters Patent.

Patented Feb. 3, 1914.

Application filed September 23, 1913. Serial No. 791,321.

To all whom it may concern:

receive complementaryshaped flanged type which said cylinder presents in opposition to the other member of the printing couple. As ordinarily constructed, the printed impressions from such a machine are irregular in accordance with the length of the lines oftype; because the lines of type extend parallel with the axis of the printing cylinder and are successively pressed between the printing couple with a given pressure which, being the same for each line, is variable per unit of length of the line. For instance, a

- line one-half the length of the cylinder would be printed with apressure, per unit of length of that line, double the pressure per unit of length of a line which is the full length of the cylinder, and consequently the shorter the lines the more deeply and darkly they are printed.

Therefore, it is the object of my invention to provide such a machine with means to equalize the pressure per unit of area upon the successive lines of type incompensation for variations in the. length of the lines; so

that the printed impressions made from 1 successive lines shall be uniform in depth and darkness regardless of differences in the length of said lines.

My invention provides make-ready de vices adapted to be used in connection with the successive lines of type to sustainaportion of the pressure in the regions of the line which otherwise would be blank, and, as hereinafter described, such devices include filling blocks which fit in the type channels in said cylinder and support surface strips adapted to extend in alinement with the. type faces and between the inking ribbon and the platen; each of said strips having tips, at one end, fitting in sockets in a band extending circumferentially on said drum, by which said strips are supported in proper relation with the lines of type; the opposite end of each strip having a lug with flanges engaged by the overhanging ledges in said channel; said strip having means to prevent its longitudinal movement and escape from said band, including a wedge abutment ,fitted'in the channel against the strip lug.

My invention comprises the various novel features of construction and arrangement hereinafter more definitely specified.

In the drawings; Figure I is a vertical transverse sectional view of a duplicating machine including a rotary printing cylinder and rotary platen, and embodying my lnvention; section being taken on the line I, I in Fig. II. Fig. II is a fragmentary inverted plan view of a portion of said cylinder, with letter type and an embodiment of my invention set therein. Fig. III is a fragmentary longitudinal sectional view taken on the'lineIII, III in Figs. I and II. .Fig IV is a fragmentary transverse sectional view taken on the line IV, IV in Figs. II and III. Fig. V is a fragmentary transverse sectional view taken on the line V, V in Figs. II and III. Fig. VI is a fragmentary transverse sectional view taken on the line VI, VI in Figs. II and III. Fig. VII is a plan View of the surface strip shown at the upper portion of Fig. II. Fig. VIII is a side elevationv of a filling block such as'shown in Figs. II and V. Fig. IX is an end View of said filling block. Fig. X is an end view of one of the sheet metal wedge abutments shown in Figs. II and III.

Fig. XI is a vertical transverse sectional View of the printing cylinder of a modified form of duplicating machine, showing a modified form ofmy invention.' Fig. XII is a fragmentary front elevation of the cylinder shown in Fig. XI.

In said figures; 1 indicates the frame of a multigraph machine having bearings 2 and 3 for the shaft 5 of the rotary printing drum 6 having the curved surface 8 with the undercutchannels 9 therein. Said drum 6 is conveniently provided with means for moving said surface8 about its center of curvature, including the handle 11 rigidly connected with said shaft 5.

The platenshaft-13 being journaled in said frame 1 has the gear 14 engaging the gear 15 of said drum 6 and carries the cylindrical platen roller 17 having the face Notice- 18 of resilient material, conveniently rubber,

extending with its axis parallel with the .17 and the printing faces of the type 20 which, as shown in Figs. I, IV and V, have flanges 21, fitting said undercut channels 9 in the curved face 8 of said drum 6. Such Variation in the printing pressure is effected to vary the depth of the impression of the printing, faces of said type 20 with respect to the paper 22, through the inking ribbon 23 which is interposed between said paper and said type faces as shown in Fig. I. In order to equalize the pressure per unit of area upon the successive lines of said printing type 20 in compensation for variations in the length of said lines, I interpose between said curved surface 8 of the drum 6 and the opposed surface 18 of the platen 17 a cam element or elements carried by said drum at its surface 8, preferably including several different patterns of surface strips, as hereinafter described.

As indicated in'Fig. II, the date, the title and the Salutation Dear sir compose three separate lines set in successive channels in the printing drum 6 and extending only a small fraction of the length of said drum. Consequently, unless means are provided to equalize the pressure per unit of length of the lines, said short lines will be much more deeply and darkly printed than the succeeding lines which are of greater length; because the whole pressure between the printing couple is borne by each line in succession as it is brought, by rotation of the printing drum, to a position normal to both axes of the printing couple; the inking ribbon 23, which is carried by said drum 6 extending between the spools 25 over the type face, between said faces and said platen, being pressed into the paper 22 more or less deeply in accordance with the pressure per unit of length of the line which is being printed. Therefore, I provide means to, bear a portion of the pressure at the ends of the short lines so as to lessenthe pressure upon the type faces composing such lines. Such means includes the filling blocks 27 conveniently formed of cast metal having flanges 28 complementary to and fitted in said channels 9 like the flanges 21 of the type 20 aforesaid. Said blocks have their heads 29 eccentrically disposed with respect to their webs 30, as shown in Figs. V and IX so as to support the surface strips 31, 32 and 33, as shown in Fig. II said strips extending radially beyond the printing surface of the type 20 and over-lying the inking ribbon 23, so as to be interposed between the latter and the paper 22 where the latter extends over the platen surface 18. It is to be noted that a strip similar to the strip 32 aforesaid, having filling blocks 27 to support it, may be employed at the lower end of the letter composition, the upperend of which is shown in Fig. II, such addltional strip 32 bearing a portion of the pressure at the end of the short lines formed by Yours truly or similar composition preceding the signa ture. Moreover if the signature is that o a person having a title such as manager a additional strip 33, with suitable filling blocks 27 supporting it, is employed to bear a portion of the pressure at the ends of that line. Each of said strips has a pair of tips 34 at one end thereof fitting in adjoining sockets 35 in. the band 36, as best shown in Fig. II said sockets 35 being respectively in alinement with the channels 9 in said drum, said band being flexible and resilient and fitted to the sectoral cylindrical surface of said drum, as shown in Fig. III, and having at one end the flexible hook 38 overhanging the end of said surface and engaging one of the guide rods 39, over which said ribbon23 extends, as shown in Fig. I. Said band 36 may have such hooks at each end, but I prefer to provide the opposite end of said band with a rigid hook such as shown at 40 in Fig. II, extending laterally-from the band and engaging in the recess 41 of the undercut abutment 12 which is conveniently secured to said drum 6 by the screw 43.

Each of said strips 31, 32 and 33 has at its end opposite said tips 34 a lug 45 including a Web fitted to extend in one of said channels S) and having flanges 46 engaged-by the overhanging ledges in said channel. I provide means to prevent longitudinal movement of said strips and their escape from said band, including resilient sheet metal abutments 48 which, as shown in Fig, X, have flanges 49 adapted to be engaged by the overhanging ledges in said channels 9 and, as shown in Fig. II, said wedge abutments are respectively fitted against said strip lugs 45 in said channels.

The form of my invention shown in Figs. XI and XII differs from that above described only as to the specific details of con struction of the flexible, sectoral, cylindrical band52 which is of greater circumferential extent than the band 36 above described, so as to be coextensive with the sectoral cylindrical curved surface 53 of the drum 54: which has a plurality of undercut channels 55 in its periphery similar to the channels strips 31, 32 and 33 above described but has hooks at its opposite ends differing in construction and arrangement from the hooks with which said band 36 is provided. R-eferring to Fig. XI it may be observed that the flexible hook 58 end of said band 52 by the rivet 59 overhangs and engages one end of said sectoral surface 53. As shown in Fig. XII, the hook 61 at the opposite end of said band 52 projects laterally like the hook 40 above described but has at the distal end thereof the flange 62 engaging the undercut abutment formed by the end rail 63 of the series which form the channels 55 between them.

Although I find it convenient to form the sockets in said bands 36 and 52 by milling notches in the peripheries thereof parallel with the axis of the drum and covering said notches with respective sheet metal strips 65 and 66 set in the perimeters of said bands, as respectively indicated in Figs. II and XII, and attached thereto only at the ends; it is to be understood that sockets capable of holding the tips 35 of said surface strips may be formed by undercutting the notches in said bands, without the use of said cover strips. Moreover, it is to be understood that said strips may be otherwise held than by a tip or tips at one end and a lug at the other. For instance, said strips may be provided with tips at both ends fitted to respective bands extending circumferent-ially on the drum, or, said strips may be provided at each end with resilient sheetmetal wedges, similar to the abutments 48 but directly connected with said strips, and such retaining means may be in unitary relation with the respective strips.

I do not desire to limit myself to the precise details of construction and arrangement herein set forth, as it is obvious that various modifications may be made therein without departing from the essential features of my invention as defined in the appended claims.

I claim 1 1. In a duplica ing machine, the combination with a rotary cylindrical platen; of a rotary printing drum having a sectoral, cy-

lindrically curved, surface with a plurality of undercut channels in its periphery, and an undercut abutment at one end thereof; a flexible sectoral cylindrical band extending circumferentially on said drum, having sockets in alinement with said channels, and means securing it in stationary relation with said drum including a flexible hook at one end overhanging and engaging one end of said sectoral surface, and a rigid hook, at.

the other end, engaging said abutment; type having flanges fitted in said channels; an inking ribbon interposed between the type faces and said platen filling blocks having webs and flanges fitted in said channels, and heads eccentric to said webs exterior to said which is secured to the and means arranged channels; surface strips supported by said filling blocks adapted to extend in alinement with the type faces between the inking ribbon and the platen; said strips being of difl'erent'patterns, having recesses for short lines of type at respectively different regions of their length; whereby a portion of the printing pressure is borne by said strips; a pair of tips at one end of each of said strips fitting adjoining sockets in said band; a hr at the other end of each of said strips, fitted to extend in one of said channels and having flanges engaged by the overhanging.

ledges in said channel; and means arranged to prevent longitudinal movement of said strips and their escape from said band, including resilient sheet metal Wedge abutments respectively fitted against said strip lugs in said channels.

2. In a duplicating machine, the combination with a rotary cylindrical platen; of a rotary printing drum having a sectoral surface with a plurality of undercut channels in its ment at one end thereof; a flexible sectoral cylindrical band extending circumferentially on said drum, having sockets in alinement with said channels, and means securing it in stationary relation ing a flexible hook at one end overhanging and engaging one end of said sectoral surface, and a r1 id hook, atthe other end, engaging said a utment; type having flanges fitted in said channels; an inking ribbon interposed between the type faces and said platen; filling blocks having webs and flanges fitted in said channels, and heads exterior to said channels; surface strips, supported by said filling blocks, adapted to extend in ali-nement with the type faces between the inkin ribbon and the platen; saidstrips being of different patterns, having recesses for short lines of type at respectively different regions of their length; whereby a portion of the printing pressure is borne by said strips; a pair of tips at one end of each of said strips ets in said band; a each of said strips, of said channels and by the overhanging lug at the other end of fitted to extend in one having flanges engaged ledges in said channel; to prevent longitudinal movement of said strips-andtheir escape from said'band, including wedge abutments respectively fitted against said strip lugs in said channels. 3. In a duplicating machine, the combination with a rotary cylindrical platen; of a rotary printin drum having a sectoral surface with a p urality of undercut channels in its periphery, and an undercut abutment at one end thereof; a flexible sectoral cylindrical band extending circumferentially on said drum, having sockets in alinement with said channels, and means securfitting adjoining sockperiphery, and an undercut abutwith said drum includhanging "flanges fitted in said channels; an inking ribbon interposed between the type faces and said platen; filling blocks fitted in said channels; surface strips, supported by said filling blocks, adapted to extend in alinement with the type faces between the inking ribbon and the platen; said strips being of different patterns, having recesses for short lines of type at respectively different regions of their length; whereby a portion of the printing pressure is borne by said strips; a tip at one end of each of said strips fitting a socket in said band; a lug at the other end of each of said strips, fitted to extend in one of said channels and having flanges enaged by the overhanging ledges in said channel; and means arranged to prevent longitudinal movement of said strips and their escape from said band, including abutments respectively fitted against said strip lugs in said channels.

"4. In aduplicatingmachine, the combination with a rotary cylindrical platen; of a rotary printing drum having a curved surface with a plurality of undercut channels in its periphery; a sectoral cylindrical band extending circumferentially on said drum, having sockets in alinement with said channels, and means securing it in stationary relation with said drum including hooks at each end; type having flanges fitted in said channels; and inking ribbon interposed between the type faces and said platen; filling blocks fitted in said channels; surface strips, supported by said filling blocks, adapted to extend in alinement with the type faces between the inking ribbon and the platen; said strips being of difierent patterns, having recesses for short lines of type at respectively difierent regions of their length; whereby a portion of the printing pressure is borne by said strips; a tip at one end of each of said strips fitting a socket in said band; a lug at the other end of each of said strips, fitted to extend in one of said channels and having flanges engaged by the overhanging ledges in said means arranged .to prevent longitudinal movement of said strips and their escape from said band, including wedge abutments respectively fitted against said strip lugs in said channels.

5. In a duplicating machine, the combination with a rotary cylindrical platen; of a rotary printing dru-m having a curved surface'with a plurality of undercut channels in its periphery; a band extending circumferentially on said drum, having sockets in alinement with said channels, and means socuring it in stationary relation with said channel and drum including hooks fat? having flanges fitted said, chaniie an inking ribbon interposed between the-type faces and said platen;ffilling -blocksfittedin said channels surface strips supported by said filling blocks adapted to'e'xtend in alinement Withthe ty effacesbetween" the inke platen "said strips behaving recessesfor ing ribbon and t ing of difierentpatte'rns,

short lines' of type at respectively diiferent regions of their length; whereby aiportion of the printing pressure is borne by'sai'd strip; a tip at one end of each of said strips fitting a socket in saidband; a lugat "the other end of tend in one of said channels and having flanges engaged by the overhanging ledges in said channel; and means arranged to prevent longitudinal movement of said strips and their escape from said "band, including abutments respectively fitted against said strip lugs in said channels. I

6. In a duplicating machine, the combination with a rotary cylindrical platen; of a rotary printing drum having a curved surface with a p urality of undercutch'annels in its periphery; a b'and extending circumferentially' on said drum, having sockets in alinement with said channels, and means securing it in stationagly relation withsaid drum; type having I anges fitted in said channels; an inking ribbon interposed'between the type faces and said platen; filling blocks fitted in said channels; surface strips supported by said filling blocks adapt-- ed to extend in alinement with the type faces said strips being of different patterns, having recesses for short lines of type at: respectively different regions of'their length; whereby a portion of'theprinting pressure isborne by said strips; a tip at one end'of each of said strips, fitted to 'exbetween the inking ribbon and the platen;

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each of said strips fitting a soc'ket'in said band; a lug at the other end of-each of 'said strips, fitted to extend in one of saidchannels and having flanges engaged by the overhanging ledges in saidch'a'nnel; and means arranged to prevent longitudinal movement of said strips and their escape from said band, including abutments respectively fitted against said strip lugs in said channels.

7. In a duplicating'machi'ne, the "conibinaf tion with a rotary cylindrical platen; of a rotary printing drum havingacu'rvedsur- ,7

face with a pluralitybfu'ndercut'channels in its periphery; a bandextending'circumferentially on said drum; having sockets in alinement with said channels,andineans1se curing it in stationaryrelation' 'with said drum; type havin'g flangesfitt'ed 'in said channels; an inking ribbon iri'terposedfbe} tween thetype facesand'said platen =filling' blocks fitted in saidchannels;"surface strips supported by extend in alinement'with thetype faces beiao said filling block's 'ada'pte'd to j p whereby a portion of the and the platen; printing pressure is borne by said strips; a tip at one end of each of said strips fitting a socket in said band; a lug at the other end of each of said strips, fitted to extend in one of said channels and havingflanges engaged by the overhanging ledges in said channel; and means arranged to prevent longitudinal movement tween the inking ribbon of said strips and their escape from said band, including abut'ments respectively fitted against said strip lugs in said channels.

8. In a duplicating machine, the combination with a platen; of a member having a curved slll'ftttfie with a plurality of undercut channels in its periphery; a circumferential series of sockets on said drum, in alinement with said channels; type having flanges fitted in said channels;'an inking ribbon interposed bet-ween .the type faces and said platen; filling blocks, adapted to extend in alinement with the type faces between the inking ribbon and the platen; whereby a portion of the printing pressure is borne by said strips; a tip at one end of each of said strips fitting said sockets; a lug at the other end of each of said strips, channels and having flanges engaged by the overhanging ledges in said channel; and

' means arranged to prevent longitudinal of said strips, fitted to extend in 7 curved surface with posed between the movement of said strips and their escapefrom 'said band.

9. In-a duplicating machine, the combination with a platen; of a member having a curved surface with a plurality of undercut channels in its periphery; a circumferential series of sockets on said drum, in alinement with said channels; type having flanges fitted in said channels; an inking ribbon interposed between the type faces and said platen; filling blocks fitted in said channels; surface strips, supported by said filling blocks, adapted to extend in alinement with the type faces between the inking ribbon and the platen; whereby a portion of the printing pressure is borne by said strips; a tip at one end of each of said strips fitting said sockets; a lug at the other ope of said channels; and means arranged to prevent longitudinal movement of said strips and their escape from said band.

10. In a duplicating machine, the c0mbi-- rfationwith a platen; of a member having a a pluralityof undercut channels in its periphery; a circumferential series of sockets on said drum, in alinement with said channels; ted in said channels; an inking ribbon intertype faces and said platen; filling blocks fitted in said channels; surface strips, supported by said filling blocks, adapted to extend in alinement with said channels;

blocks fitted in said channels; surface strips, supported by said filling 1nat1on with fitted to extend in one of said end .of each type having flanges fit the type faces between the inking ribbon and, the platen; whereby a portion of the printing pressure is borne by said strips; a tip at one end of each of said strips fitting said. sockets; and means at the other end'of each of said strips detachably connecting them with said drum.

11. In a duplicating machine, the combination with a platen; of a type holding member having a plurality of type channels in its surface; sockets on said member in alinement with said channels; type fitted in said channels; an inking ribbon, carried by said member, interposed between the type faces and said platen; filling blocks fitted in and surface strips, fitted to said sockets and separable from but supported by said filling blocks, adapted to extend in alinement with the type faces between said inking ribbon and platen; whereby a portion of the printing pressure is borne by said strips. I

12. In a duplicating machine, the 'combia platen; of a type holding member having a plurality of type channels in its surface; sockets on said member in alinement with said channels; type fitted in said channels; filling blocks fitted in said channels; and surface strips, fitted to said sockets and supported by said filling blocks, adapted to extend in alinement with the type faces between said type and platen; whereby a portion of the printing pressure is borne by said strips.

13. In a duplicating machine, the combination with a platen; of a type holding member; type on said member; an inking ribbon, carried by said member, interposed between the type faces and said platen; a filling block on said member; and a surface strip, having means detachably connecting it with said member, inde mndently of said block, but supported by said block, adapted to extend in alinement with the type faces between the inking ribbonand the platen; whereby a portion of the printing pressure is borne by said stri 14. In a duplicating machine, the combination with a rotary printing. drum having a plurality of undercut type channels in its periphery; of a separable band extending circumferentially on said drum, having sockets in alinement witli said channels; a filling block fitted in one of said channels; and a surface strip having means to engage said sockets, independently of but supported by said block, adapted to extend in alinement-with the type faces; whereby a portion 7 of the printing. pressure is borneby said strip P 15. In a duplicating machine, the combination with a rotary printing drum having a plurality of type channels in its periphcry; of a band extending circumferentially on said drum, having sockets in alinement with said channels; a filling block fitted in one of said channels having means to engage said and a surface strip sockets, independently of but supported by said block,

adapted to extend in alinement with the type faces; whereby a portion of the printing pressure is borne 16. In a'duplicatin nation with a rotary by said strip. g machine, the combirinting drum having drum, having lines; a filling block sockets parallel with said fitted to 'be set in said drum like a type; and a surface strip having means to engage said sockets, independently of but supported by said block, adapted to extend in alinement with the type faces; whereby a pressure 15 borne 17. In a duplicating machine,

nation with a rotary means to hold type in portion of the printing said strip.

the combirinting drum having lines; of a band extending circumferentially on s aid drum, having sockets parallel with said lines; a

filling like a type; and ameans to engage said of but supported by extend in alinement block fitted to be set in said drum surface strip having sockets, independently said block, adapted to with whereby a portion of the printing pressure is borne bysaid strip.

18.- In a duplicating machine, the combination with a rotary means to bold type in tending circumferentially printing .drum havin on said drum,

having sockets in alinement with said type; a filling block; anda surface strip having means to engage said .of but supported by extend in alinement sockets, independently said block, adapted to with the type faces;

whereby a portion of the printing pressure is borne by said strip 19. In a duplicatin nation with a type strips of different pa g machine, the combiholding. member; of

including surface tterns, having recesses for short lines of type at respectively different regions of their their ends detachably said type holding member.

20. In a duplicating machine,

nation with a. type length, and means at connecting them with the combiholding member; of

means for lessening the pressure upon short lines of type therein,

strips having recesses including surface for short lines of type at respectively different regions of their length, and means at their ends detachably connecting them with said type holding member.

21. In a duphcatin nation with a type strips having recesses g machineflthe combiholding member; of

means for lessening the pressure upon short lines of type therein,

including surface for short lines of type the type faces; I

lines; of a band 'ex lines of type therein,

at respectively differemt regions of their length, and means det-achably connecting them with said type holding member.

22. In a duplicating machine, the coinbination with a type holding member; of

means for lessening the pressure upon short including a surface lines of type therein,

for ashort line of strip having a recess vtype, and means at itsends detachably connecting it with said type holding member.

23; In a duplicating machine, the combination with a type holding member; of means for lessening the pressure upon short lines of type therein, including a surface strip having a recess for a. short line of type, and means detachably' connecting it with said type holding member."

24. A surfacevstrip adapted to extend in alineinent with type faces in a type holding member and bear a portion of the printing pressure upon short lines of type in said member, having means arranged to detachably engage said member, including a pair of tips at one end and a flanged lug at the other end.

25. A surface strip adapted to extend in alinement with type faces in a type holding member and bear a portion of the printing pressure upon short lines of type in said member, having means arranged to detachably engage said member, including a tip at one end and a flanged lug at'the' other end. 26. A surface strip adapted to extend in alinement with type faces in a type holding member and bear a portion of the printing pressure upon short lines of /t'y'pe'in said member, having means arranged to detacllably engage said member, including a tip at one end and a lug at the other end.

27. An attachment for a printing drum,

adapted to equalize the pressure upon long and short lines of type therein, including a flexible resilient band fitted to-extend circumferentially on said drum and having hooks at its ends arrangedto detachably engage said drum, surface strips adapted to extend on said'drum over the faces of the type therein, parallel with the lines of type, eachhaying means at detachably engage said band and having means at the other end arranged to detachably engage said drum independently of said band, and filling blocks arranged to be set in said drum tosupport said strips; v

28. An attachment for a printing drum,

adapted to equalize the pressure upon long and short lines'of type therein, including a band fitted to extend circumferentially on said drum and. having hooks at its ends 'arranged to detachably engage said drum, surface strips adapted to extend on said drum overthe faces of the type therein, parallel with the lines of type, each having means at one end arranged to detachably engage said band and having means at the other end one,end arranged to arranged to detaqhabl engage said drum inde endently of sai band, and filling bloc 5 arranged to be set in said drum to support said strips.

29. An attachment for a printing drum, adapted toequalize the ressure upon long and short lines of type t erein, including a band fitted to extend circumferentially on' said drum and having means arranged to detachably engage said drum, surface stri s adapted to extend on said drum over t e faces of the type therein, parallel with the lines of type, each having means at one end arranged to detachably-engage said band and havin means at the other end arranged 15 In testimony whereof, I have hereunto 20 signed my name at Philadelphia, Pennsyl; Vania, this nineteenth day of September, 1913. v

HERMAN G. LIEBENTHAL.

Witnesses: r

BLANCHE F. LE FURE, NAN C. HAGAN.

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