US1121721A

US1121721A - Recording-machine.

Info

Publication number: US1121721A
Application number: US80757213A
Authority: US
Inventors: Birney Dysart
Original assignee: DALTON ADDING MACHINE CO
Current assignee: DALTON ADDING MACHINE Co
Priority date: 1913-12-19
Filing date: 1913-12-19
Publication date: 1914-12-22
Anticipated expiration: 1931-12-22

Description

l .B.DYSAR T. l

RECORDING. MACHINE. APLIOATION FILED DEU. 19, ISHS.

Patented Dec. 22, 1914.

2 BHEETS-SHEBT 1.

Wl TNESSES B. DYSART.

RECORDING MACHINE.

APPLIOATION FILED DB0.19,1913.

l 1 2,1 ,721 Patented Deo. 22, 1914.

2 SHEETSvSHEET 2.

75m/17 @1; Wm

TED STATES PATENT OFFICE,

BIRNEY DYSART, OF ST. LOUIS, MISSOURI, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE DAL'I'ON ADDING MACHINE COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

RECORDING-MACHINE.

Specication of Letters PatentA Iatcnted Dec. 22, 1911i.

Application filed December 19, 1913. Serial No. 807,572.

To f/Z fr/mm 'if may Concern Be it known that I, Bnmmr Dvsalrr, a citizen ot the United States, residing in the citi' of Louis and State of Missouri, have invented a new and useful Recording-Machine. ot which the following is a. specica tion.

'.lhis invention relates to recording machines or' the class in which series of type are mounted movably upon movable carriers whereby the tvpe are first positioned adjacent to the recording line ot a platen, and are then driven against an interposed ribbon to ellect printing upon the paper on the platen.

An object of the invention is to provide a recording mechanism comprising a number ot type-carriers, and a series of type mtr-Kahl;v suaiorted buv each type-carrier, in combination with retracting devices for the type, and means supported by each carrier for actuating the retract-ing devices to retract the tlvpe atte'r each printing operation. so that the type will be normally retained at the limit ot their outward or downward movement on the type-carriers.

Another object is to provide a recording machine including a number of type-carriers, and a series ot type movabl)7 support ed bv each tvpecarrier, in combination with an actuator engaging a plurality ot' said type. and means Vfor actuating said actuator etlectiveluv to retract or move the type` away trom the platen a'liter each printing opera tion. so that all ot the type are normally held in retracted position and are capable ot being driven toward the platen to record upon paper held against the platen.

A specific object ot the invention is to provide a recording machinecontaining a series ot' type-carriers and a series of type upon each type-carrier, with actuating le- Y vers mounted upon each type-carr1er and en-y gaging the type thereon, and springs for actuating said levers to move the tvpe away from the platen after printing operations.

A machine embodying much of the structure with which my present invention is combined` including the movable type-carriers, and the mechanism for controlling the t vpe-carriers in their operations, is disclosed in Hopkins Patent No. 1,039,130, dated September 24, 1912.

In the accompanying drawings in Iwhich I have illustrated a preferred embodiment ot the invention-Figure l is an elevation, partly in section, of a machine containing a series ot` movable type-carriers, having Inv invention combined tlu-u'ewith. Fig. i; is a side elevatimi ot one of the typccarriers removed from the machine, the case supportlng the type being in section to illustrate the devices for reti-acting the type trom the platen after printing. Figj is a side elevation of a partl o'l one ot the type-carriers, a part ot' the type-carrier being removed to `illustrate the position of the parts when one ot the lower tvp'e .in the series is driven to record. Fig. l is a similar view illustrating` the position o't' the parts when one ot' the upper tvvpe of the series is driven to record. Fig. 5 is a sectional view ot the tvpe-carrier on the line w ot Fig. Q. Fig. G is a perspective view of one ot the type blocks removed Yfrom the tvpe carrier. Figs. 7 and 8 are perspective views ot the tv vpeiactuating levers bv which the type are retracted from the platen after printing operation.

As usual the machine includes a paper carriage l by which the paper is supported and delivered to receive the printing impressions` il ribbon is supported adjacent to the printing surface ot the platen of the carriage. and is arranged to receive the impact ot the type when the latter are driven toward the platen in printing operations.

The machine also includes the usual carriers 3 operable adjacent to the printing surface of the platen, as required to position anv ot the type adjacent to the printing line. The operation of the type-carriers 3 is controlled in the usual and well understood manner so that the tvpe thereon may be selectivclv and at the will ot the operator utilized in printing operations. It is in connection with these usual and well understood devices that my present invention is arranged to operate.

The upper end of each type carrier 3 supports a plate 4l having its edges 5 turned laterall'vr to engage against the side ot the tvpe-carrier 3 and thereby form a housing by which the tvpe are supported. The plate Je is secured in connection with its typecarrier bv screws 6. The flanges 5 are provided with notches andthe tvpe blocksV 7 are mounted in said notches. The tvpe are on the ends of the tvpe blocks which are nearest the platen, and said type blocks are longitudinally movable in their supports,

so that after the type carriers have been positioned adjacent to the platen the type which are alined at the printing line may. be driven longitudinally to strike the ribbon and thereby effect printing upon the paper interposed between the ribbon and the platen.

The type-carrying end of each type block is provided with a shoulder or head 8 (Figs. 5 and (i), adapted to engage against the edge of the type-carrier as clearly illustrated 1n Fig. and thereby limit outward or `downward movement of the type block. Similarly, the outer or blank end of each type block is provided with a head or shoulder 9 whereby `longitudinal movement of the type in the opposite direction is limited. Thus, each type block is provided on its opuosite ends with heads or shoulders 8 or v9 adapted to enga ge the edges of the type-cal'- rier 3 to limit the type in its movements, and

to prevent removal of the type after the series have once been assembled.

The type-carriers are controlled in their operations in the usual manner, and the alined type are driven toward the platen'in printing operations as usual `by hammers 10.

After each printing operation it is neces-'- sary to retract the type from the ribbon, and to hold the type in their retracted posltions to enable the type-carriers to be operated' freely, andto obtain the desired results in the printing operations of the type-carriers and the type. vFor retracting a number of the type blocks I utilize an vactuator or retractor in the form of a lever 11 pivotally supported upon the type-carrier by a support 12. The lever 11 extends into the ho'using, between the plate 4 and the type-carrier and engages shoulders 13 upon a plurality of the type blocks, so that said lever 11 is effective to retract a plurality of the type, and to hold them retracted after each printing operation. Preferably the lever V11 engagesonly a part of the vseries of type, and another actuator lever 14 isprovided to engage the remaining type of the series. The lever 14 is pivotally connected to the typecarrier by'a support 15, and engages similar shoulders 13 upon a number of the type blocks in the series. The lever 11 is provided with a projecting part 16, and` the lever lfi'is provided with a projecting-part 17. A spring 18 of suitable retractile power connects the

projections

16 and,17, and is effective to actuate bothv of thc actuating levers in a direction to retract and hold retracted all of the type on the type-carrier on which said levers are rrountedl The type- ,carrier is provided with a slot 19 to receive the spring 18 so that the springs on the adjacent type-carriers Will .not interfere with each other during the Ydifferential movement.

of the type-carriers. The type blocks are freely movable in their supports,iand the spring 18 readily i yields, so-that the percussive action of the hammer 10 required to drive the type to print is not required to be materially increased in order to overcome the resistance of the spring 18. Since the type operate to effect printing by the percussive action of the hammer, and the hammer is immediately retracted after striking the type, no other type than those driven to,l record will be moved out in printing operation` Thus, as illustrated IinVFigS. 8 and et' only those type drivenbythe percussive action of the hammers move from their normal positions in their supports. Immediately upon retraction of the hammer after each percussive A'action thereof, thespring 18 retracts and vparallel with each other.l Such machines are well known commercially, and the particular machine with which vI have illustrated my invention is known as the Dalton adding-machine, and is manufactured in substantial comformity withv the adding and listing mechanism constituting a part of the `subjectmatter of Hopkins Patent No.

1,039,130, dated September 24, 1912, as hereinbefore mentioned. v

It will be understood that in illustrating anddescribing my invention as embodied in such a machine I do Vnot confine myself to that specific embodiment. Obviously, the invention may be utilized with equal ad-l vantage in various species of machines, and there may be vvarious modifications and variationsin the arrangement and construction and coperation of the partsvvithout` dei being moved by the movement of said .type when said type are 'drivenrby said hammer as aforesaid, and means for actuating said leverto return said type to idle position after being driven byA said hammer to print,

substantially as described.

2. In a recording machine, the combination With a type-carrier, a series of relatively movable type supported by said typea lever pivoted' on said type-carrier and en gaging said `type and yielding to the blow ot said hammer to enable said type to be driven bysaid hammer as aforesaid, and a spring actuating said lever to restore said type to idle position after being driven by said hammer as aforesaid, substantially as described.

3. In a recordingmachine, the combination with a type-carrier, a series of type supported by said typecarrier, and shoulders limiting movement of said type in both directions, of a` lever piyoted on said typecar rier for holdiiig said type in idle position, a spring acting on saidlever to hold said ,type inidle position and to restore them to idle position after being driven to print, and a hammer operable to drive said type to print, in opposition toI said lever and spring, substantially as described.

l. In a recording machine, the combination with a type-carrier, and groups-of sepa rately movable type-blocks supported by said type-carrier, of a lever for each ofsaid groups, pivots supporting said levers on saidA tvpe-carriers, and a spring connecting said levers and actuating said levers to hold said.

type-blocks in idle position, substantially as described.

5. In a recording machine, the combinaltion with a typearrier, a series of type supported by said type-carrier, a lever pivoted on said type-carrier and engaging a number ot' said type, a second vlever pivoted on said type-carrier and engaging ether-sof said type, and a spring connecting said levers and actuating them in the saine direction to hold said type in idle position, substantially as described.4

(5. ln a recording machine, the combination with a type-carrier, a series of type mounted on said type-carrier, separately movablelevers pivoted on said type-carriers andengaging said type, and a spring connecting-said levers and actuating said levers in the same direction, substantially as described. l

7, In a recording machine, the combination With a series ot' type-carriers each provided ywith a slot and movable side by side `in recording operations, and a series of type supported by each type-carrier, of levers supported by each type-carrier for actuating the type in one direction, and a spring connecting the levers on cach type-carrier and supported within said slot whereby the type-carriers may be closely mounted and the springs on the several type-carriers will be permanently supported'out of engagement with each other in said slots, substantially as described.

8. In a recording machine, the combination with a typeCariier, a sei'ies of relatively movable type supported by said type-carrier, a hammer for driving said type in one direction to effect printing, and shoulders on said type arranged to engage with said typecarrier to limit movement of said type in both directions with respect to said type-cairier, of a lever engaging certain ot` said type and being moved by the movement of said type when said type are driven by said harnnier as aforesaid, another lever engaging others of said type andbeingmoved by the movement otl the type engaged thereby when said type are driven by said hammer as aforesaid, and means for actuating said levers to return said type to idle position after being driven by said hammer to print, substantially as described.

In Witness whereof, I have signed this specification in the presence o'l' two subscribing witnesses.

BIRNEY DYSART. l/Vitnesses HARRY Laiviismnn, HARRY C. Yanonn.