US1548954A - Recording mechanism - Google Patents

Description

Patented Ang., 1l, i925.

VtltLTElt 3f. IPASI-NSKI, OF DELROIT, IVIJECHIGAN, ASSIGNOR TO BURROUGHS DDNG- MACHINE COMPANY,

RECORDJING Application led May 1,

To @ZZ whom it may concern:

lle it knownthat VALTER J. FAsrNsKr, a citizen of the United States, residing at, Detroit, in the county of Wayne and State of Michigan, have invented 4certain new and` useful lmprovementsin Record-ing Mechaism, of which the following is 'a specification. c f j This invention relates to recording mechanisms of adding and listing machines and the like, and more. particularly to vthat type of machine in which the several type of each denominational series are adapted to be independently moved or driven against the paper on the platen by the action of achammer.

rlhe object of my invention is to provide an improved device for yieldingly retracting. the type. It is common to retract or restore the type by spring action after the type have been struck by the 'hammer and driven against the platen', the action `being a percussive one. Heretofore various forms of devices have been sugg ested for performing this function, as, for example, single springs for the individual type, spring-actuated levers 4having iixed pivots' or hinge-connections which are subject to wear, or a plurality of leaf springs hinged'at oneend and subject to rapid crystallization and wear.

More specifically, the principal object of my invention is to provide a type restoring device which is simple and cheap in construction, formed of a minimum number of parts, easily and quickly assembled and in-- spected, and subject to minimum wear and deterioration, and yetv effective in operation.

The accompanying drawings, which form part of this specic'ation, illustrate a preferred form ofembodiment of my invention, and .I have shownfor purposes .of illustration my invention applied tothe well known. Moon-Hopkins billing machine, al-

though it is to be understood that the use of my invention is not limited thereto as it is equally applicable to other kinds of listing or recordingmachines.

f said drawings, Fig. 1 is a fragmentary view, partly in section, taken'alongside of one of .the rack and type bars of a Moon- Hopkins machine, showing my invention applied thereto; Figs. 2 and 3 are sinnlar OF lDJEJIEtOI'JL,4 MCHGAN, A CORPORATION OF MCHEGABR MECHANISM.

1924. Serial No. 710,208.

sectionalelevations of-a type bar and its type,.the section being taken along one side of tlre.type, as on' the line 2 2 of F ig.- Ll, witlrFig. 2 showing the parts in normal condition and Fig. 3 lshowing' the parts in theconditi-on which they assume when the 8 type is projected against the'platen by the hammer; Fig. iis avertical section taken on the line 4 4 of Fig. 2, and Fig. 5 is a vertical section taken on the line 5-5 of Fig. 2.

lft is unnecessary to describe in detail the machine proper as it is one well known on the market and well disclosed in various patents. In general, the racks 6 carry and are integnal with the type bars, 7 on each` of which are mounted a ldenominational series of type pieces S. During the operation of the machine and after the type bals have beendiierentially positioned, a uni-l versal bar 9 is lowered to -trip latches 10 and then studs 11 on iiri'ng latches 12 act on the tails of hammers 13, to project the striking noses 14 of the hammers against the type'pieces. on lthe printing line to drive such type pieces upwardly against the paper on platen 15. c

The type ofl each series are vertically slidably -mounteda in a. housing, one side of which is forlrid by the type bar 7. and the .other side by a plate 16 having inwardly .directed flanges 17 along its upper and lowerl which has downwardly-depending triangular-shaped fingers 24 extending between the projections 2l on the type. A leaf spring 20,'formed as shown in Figs. 2 and'3, has its ends rresting on the upper edge of the universal bar 23 and its central portion has a .curved hump or bend which -seats 'in a correspondingly curved recess formed in the recess, properly centers the springiwith re-' lower edge of the up er flange 17 of the plate 16. Each end ofpthe'universal bar 23 is provided witha vertical projection 26.

' The spring 20 is undercompre'ssion be' tween its central portion and its ends' so that the universal bar 4is yieldingly pressed against the projections 21 on the type..

When one of the type is struck by the'ham'- mer, for example, the 8 type as shown in ulcrum. When one ofV the, other or intermediate type is operated, the end of the universal bar, which is nearer the type, will be elevated until the projection 26 on such end engages the' underside of the upper flange 17v and then the bar will ulcrum about that end and its other end will be raised an ex tent dependent upon the distance of the operated type from the center of the spring 20. rlhe lower ends --of the type are provided with sh'oulders27 which are adapted to positively limit the Ithrow of the type by strik-ing .against the lower -edge of the type y bar 7 and plate 16, and form a broad'strik-- ing face fon-the hammers.

When the universal bar 23 lis raised by one of the type, other than-'the 0 or 9 type, it is prevented from being accidentally laterally displaced in both directions by the fingers 24 on the opposite sides of thev shoul-V fder 21 'ofthe operated type. When the 0 for 9, type is operated, the nger 24 on. the inner side ofV its shoulder 21 'preventslateral movement of the universal bar 2 3 in`v one direction and the finger 24 onfthe innerl side of the shoulder 21 of the other end' type,

on which the bar fulcrums, prevents'lateral displacement of the latter in the oppositel direction. The central vcurved bend --25 on the spring 20, through its engagement in its spect to the type, and this recess together vwith the projections 26 on the ends of the bar 23 prevent lateral displacement of the spring. n v

From the above description, it will be obvious that the device, embodying my invention, is very simple in design, as t con* sists essentially of a universal bar and a single leaf l spring neither of which are hinged or iXedly pivoted,`nor subject tol excessive wear, while atthe same time they may bereadily assembled or replaced and are admirably adapted to eectively perform the functions for which they are demeseta signed. The spring acts with substantial uniformity upon each one of the type of, the

series.

I claim:

1. In'r'ecording mechanisnnt'he combination of a housing, a series of'type slidably mounted therein, a universal bar engaging said type toA retract them,` and a spring mounted in said housing and engaging said bar to normally hold the latter against the several type of the series.

l2. In recording'mechanism, the combination of a housing, a 'series of type slidably mounted therein, a universal bar' engaging said type, and a leaf spring engaging said bar to normally hold it against the several type of the series and retractthe operated t pe.v

yB. In recording mechanism, the combination of a housing, a series of type slidably mounted therein, a universal bar for retracting the several type of the series, and4 a leaf spring having its end portions engaging said bar and a central seated portion.

4. In recording mechanism, the combination of ahousing, a series of type slidably mounted therein, afuniversal bar mounted within said housing for retracting the several type of the series, and a-leaf spring mounted in said housing and compressed between the4 housing and said barglwith its end portions engaging said bar and its central portion engaging said housing.

5. In recording mechanism, the combina- "tion of a housing, a series of type slidably mounted therein, a universal bar for retracting the several type of the series, and a leaf spring having its central portion Jformed to seat in a recess and its end portions pressing against the ends of said bar.

6. In recording mechanism, the combination of a housing, a series of type slidably mountedtherein, a universal bar engaging said type and having lingers extending between the type to prevent displacement of the bar, and a leaf spring engaging said bar .to normally hold vit against the type and retract' the operated type 7. In recording mechanism, the combina tion of a housing, a series of type slidably mounted therein, a universal bar engaging said type and having fingers extending beA tween the type to prevent displacement of the bar and a leaf spring mounted in said housing and having a vcentral portion formed to seat in a recess with its ends pressing against 'the ends of the universal bar to normally hold the latter against the type and retract the operated type. 8. In recording mechanism, the combina tion of a housing, a series of type slidably .mounted therein, a universal bar engaging normally hold it against the type rand retract the 'operated type and projections on the end of `said bar to prevent displacement mounted therein, a universal bar engagmg said-type and having lingers extending between the type to prevent displacement of the bar, a leaf spring having its l'central porl0 tion formed to seat in a recess with its ends resting on said bar, and projections on the end of said bar for preventing displacement of Said spring.

WALTER J. PAsINsKi.

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